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ORDER NO.VR0603007CE B24
DVD Recorder
DMR-EH75VP
Vol. 1
Colour (S).......................Silver Type
© 2006 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
DMR-EH75VP
CONTENTS
Page
1 Safety Precaution 1.1. General guidelines 1.2. Caution for fuse replacement 2 Warning 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatic Sensitive (ES) Devices 2.2. Precaution of Laser Diode 2.3. Service caution based on legal restrictions 2.4. How to replace the Lithium Battery 3 Service Navigation 3.1. Service Information 4 Specifications 5 Features 5.1. About DivX 5.2. HDAVI Control (HDMI Link) 6 Location of Controls and Components 6.1. Each Buttons 7 Operation Instructions 5 6 7 7 8 8 9 10 10 15 18 18 20 4 4 4 5 12.1. Power Supply Block Diagram 12.2. Analog Video Block Diagram 12.3. Analog Audio Block Diagram 12.4. Analog Timer Block Diagram 12.5. System Control & Servo Block Diagram 12.6. HDMI Block Diagram 13 Schematic Diagram 13.1. Interconnection Schematic Diagram 13.2. Power Supply (1/4) Section (Power & Digital I/F P.C.B.(1/2)) Schematic Diagram (P) 13.3. Power Supply (2/4) Section (Power & Digital I/F P.C.B.(1/2)) Schematic Diagram (P) 13.4. Power Supply (3/4) Section (Power & Digital I/F P.C.B.(1/2)) Schematic Diagram (P) 13.5. Power Supply (4/4) Section (Power & Digital I/F P.C.B.(1/2)) Schematic Diagram (P) 13.6. Digital I/F (1/4) Section (Power & Digital I/F P.C.B.(2/2)) Schematic Diagram (IF) 13.7. Digital I/F (2/4) Section (Power & Digital I/F P.C.B.(2/2)) Schematic Diagram (IF) 13.8. Digital I/F (3/4) Section (Power & Digital I/F P.C.B.(2/2)) Schematic Diagram (IF) 13.9. Digital I/F (4/4) Section (Power & Digital I/F P.C.B.(2/2)) Schematic Diagram (IF) 13.10. Video Section (Main P.C.B.(1/4)) Schematic Diagram Schematic Diagram (V) 78 77 76 75 74 72 71 70 69
Page
59 61 63 64 65 66 67 67
7.1. (DVD) Taking out the Disc from RAM-Drive Unit when the Disc cannot be ejected by OPEN/CLOSE button 7.2. (VHS) Removing Cassette Tape manually 8 Service Mode 8.1. (DVD) Self-Diagnosis and Special Mode Setting 8.2. (VHS) Self-Diagnosis and Special Mode Setting 9 Service Fixture & Tools 10 Assembling and Disassembling 10.1. Disassembly Flow Chart 10.2. P.C.B. Positions 20 21 23 23 32 38 39 39 40
13.11. VHS Audio Section (Main P.C.B.(2/4)) Schematic Diagram (A) 13.12. Syscon/Servo/Timer (1/4) Section (Main P.C.B.(3/4)) Schematic Diagram (S) 13.13. Syscon/Servo/Timer (2/4) Section (Main P.C.B.(3/4)) Schematic Diagram (S) 13.14. Syscon/Servo/Timer (3/4) Section (Main P.C.B.(3/4)) Schematic Diagram (S) 13.15. Syscon/Servo/Timer (4/4) Section (Main P.C.B.(3/4)) Schematic Diagram (S) 13.16. I/O Tuner Section (1/4) (Main P.C.B.(4/4)) Schematic Diagram (I) 13.17. I/O Tuner Section (2/4) (Main P.C.B.(4/4)) Schematic Diagram (I) 13.18. I/O Tuner Section (3/4) (Main P.C.B.(4/4)) Schematic Diagram (I) 13.19. I/O Tuner Section (4/4) (Main P.C.B.(4/4)) Schematic Diagram (I) 13.20. HDMI Schematic Diagram 13.21. SD Card/DV Jack Schematic Diagram 88 90 92 87 86 85 83 82 81 80 79
10.3. Caution with inserting cassette tape when disassembling the unit 10.4. Top Case 10.5. Front Panel 10.6. Front (L) P.C.B. & Front (R) P.C.B. 10.7. RAM / Digital P.C.B. Module 10.8. HDD 10.9. VTR Mechanism Unit 10.10. SD Card/DV Jack P.C.B. 10.11. Rear Panel & Fan Motor 10.12. HDMI P.C.B. 10.13. Power & Digital I/F P.C.B. 10.14. Main P.C.B. 11 Measurements and Adjustments 11.1. Service Positions 11.2. Caution for Replacing Parts 41 42 42 43 43 45 46 47 47 47 48 48 49 49 54
11.3. Standard Inspection Specifications after Making Repairs 58 12 Block Diagram 59
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13.22. Front (R) Schematic Diagram 13.23. Front Jack Schematic Diagram 14 Printed Circuit Board 14.1. Power & Digital I/F P.C.B. 14.2. Main P.C.B. 14.3. HDMI P.C.B. 14.4. SD Card/DV Jack P.C.B. 14.5. Front (L) Jack P.C.B., Front (R) P.C.B.
93 94 95 95 97 102 103 104
15 Appendix for Schematic Diagram 15.1. Voltage and Waveform Chart 16 Miscellaneous 16.1. Abbreviations 17 Parts and Exploded Views 17.1. Exploded Views 17.2. Replacement Parts List
105 105 113 113 119 119 123
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1 Safety Precaution
1.1. General guidelines
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. 2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed. 3. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
1.1.1.
Leakage current cold check
1.1.2.
1. Unplug the AC cord and connect a jumper between the two prongs on the plug. 2. Measure the resistance value, with an ohmmeter, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis, the reading should be between 1MW and 5.2MW. When the exposed metal does not have a return path to the chassis, the reading must be .
Leakage current hot check (See Figure 1 .)
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check. 2. Connect a 1.5kW, 10 watts resistor, in parallel with a 0.15µF capacitors, between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure 1. 3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor. 4. Check each exposed metallic part, and measure the voltage at each point. 5. Reverse the AC plug in the AC outlet and repeat each of the above measurements. 6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may be used to make the hot checks, leakage current must not exceed 1/2 milliampere. In case a measurement is outside of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer.
Figure 1
1.2.
Caution for fuse replacement
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2 Warning
2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatic Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatic Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistor-sand semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge (ESD). 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static (ESD protected)" can generate electrical charge sufficient to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material). 7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. Caution Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise hamless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device).
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2.2.
Precaution of Laser Diode
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2.3.
2.3.1.
Service caution based on legal restrictions
General description about Lead Free Solder (PbF)
The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this equipment in considering the globally environmental conservation. The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin (Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86°F) more than that of the normal solder. Definition of PCB Lead Free Solder being used
The letter of "PbF" is printed either foil side or components side on the PCB using the lead free solder. (See right figure)
Service caution for repair work using Lead Free Solder (PbF) · The lead free solder has to be used when repairing the equipment for which the lead free solder is used. (Definition: The letter of "PbF" is printed on the PCB using the lead free solder.) · To put lead free solder, it should be well molten and mixed with the original lead free solder. · Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC. · Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt the lead free solder. · Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30 degrees C (662±86°F). Recommended Lead Free Solder (Service Parts Route.) · The following 3 types of lead free solder are available through the service parts route. RFKZ03D01K-----------(0.3mm 100g Reel) RFKZ06D01K-----------(0.6mm 100g Reel) RFKZ10D01K-----------(1.0mm 100g Reel) Note * Ingredient: tin (Sn), 96.5%, silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%
2.4.
How to replace the Lithium Battery
REPLACEMENT PROCEDURE 1. Remove the Top case, VHS Mechanism, HDD Angle, Main P.C.B. and Battery Cover by referring the Disassembling Procedure. 2. Unsolder the Lithium Batteries: B7501 and then replace it into new one. ( As shown in 14.2.1. The Main P.C.B. ) NOTE: The lithium battery is a critical component. ( Type No.: CR2354-1GUF Manufactured by Panasonic. ) It must never be subjected to excessive heat or discharge. It must therefore only be fitted in equipment designed specifically for its use. Replacement batteries must be of the same type and manufacture. They must be fitted in the same manner and location as the original battery, with the correct polarity contacts observed. Do not attempt to re-charge the old battery or re-use it for any other purpose. It should be disposed of in waste products destined for burial rather than incineration.
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3 Service Navigation
3.1. Service Information
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4 Specifications
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5 Features
5.1.
5.1.1.
About DivX
General
DivX is a new video compressing format that is applied MPEG4 technology to improve image quality and the compressibility, and it is developed by the DivXNetworks, Inc., Video file of high resolution and the high picture quality can be made though it is a high compressibility. DivX codec is necessary for converting video to DivX file and .playback files made.
5.1.2.
Operating Instructions about DivX Video-on-Demand Content
DivX Video-on-Demand (VOD) content is encrypted for copyright protection. In order to play DivX VOD content on this unit, you first need to register the unit. Follow the on line instructions for purchasing DivX VOD content to enter unit´s registration code and register unit. Visit www.divx.com/vod for more information. Display unit´s registration code.
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5.1.3.
About DivX DRM
Divx file includes file to which DRM(Digital Right Management) is applied and file not applied. This item is a content that relates only in treating file to which DRM is applied. 1. Registration Code display function 2. User´s registration and approval function 3. Rental management function 1) Registration Code display function Registration Code is alphanumeric character sequence 8bytes inputted as recorder information, in case a use purchases or rent a DivX DRM file in a network. Registration code is a character sequence generated at random, and differs in each recorder. Moreover, Registration code is updated by new user authentication ever if same recorder. 2) User´s registration and approval function · Only one user can register for one recorder. If user´s registration is not done with the recorder, DivX file cannot be played back. · User´s registration is performed only when a DivX DRM file is first chosen by recorder · DivX DRM file that can perform user´s registration is only a file that is registered Registration Code and purchased or rented. · User authentication is performed whenever DivX DRM file is played back. Error message is displayed when failing in user´s registration and approval. 3) Rental management function There are purchase file without registration of number of playback and rental files with registration of number of playback as Divx file. Number of playback of rental file is counted by the recorder. When rental file is played, remaining number of times that can be played back will be shown to users, recorder requests users to input yes or no. Following specifications have been installed for the rental files in the purpose to clarify the count condition of number of times of playback. · Conditions on counting number of times of play. 1. When a file was opened successfully. (At the time of playback start) 2. When you have done review operation from the start. (Skip to file head) - At this time, remaining number of times that can be played back and confirmation message [Do you play really?] are displayed. - When the playback point has been skipped to the top of title, number of playback is not counted if the top of title was not recognized. - Even if the power failure occurs after start of playback of rental file, number of times of playback counted at start of the playback is held as it is. (Though playback stops by power failure, the number of times of playback is not counted.) When it has reached head of title, the playback is ended, and screen becomes DivX menu (There is no resume) and then cursor is located on title that has been played back. Then if the same file was continuously played back, it begins to playback from the file head. Note: Above mentioned stored user information and number of times of playback are not erased by update of firmware or by initialization by test mode.
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5.2.
5.2.1.
HDAVI Control (HDMI Link)
Pin Name
Linked operations by HDAVI Control (HDMI Link)
What is HDMI
HDMI is abbreviation of [High-Definition Multimedia Interface], and is digital interface standard for next generation TV corresponding to follows. 1. Non-compressing high quality digital image 2. Digital transmission of multi channel digital audio. 3. Two way communication of control signal of control straightening between equipments
Pin layout of plug of HDMI cable seen from outside.
5.2.2.
Link functions with Equipments Corresponding Table
Functions (1) Automatic Input switch (2) Link of Power
In case setting of [FUNCTIONS] ® [Setup] ® [TV Screen] ® [Functions of HDMI] ® [Control with HDMI] are on, all above equipments Link functions are effective.
5.2.3.
Outline of Equipments Linked functions
(1) Automatic Input switch At starting of playback/ GUI display by DIGA, it turns on power of VIErA, and it displays picture of DIGA onto screen of VIErA. Starting of playback: It includes automatic playback of DVD-Video and so on. And it includes picture of screen saver too. GUI display: FUNCTIONS, DIRECT NAVIGATOR, TV PROGRAM, PROG/CHECK, Timer Recording, G-code, Initial setting, Playback setting, Play list, SD/DVD guide, Warning messages that user can select and so on.
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(2) Seamless GUI 1. Automatic switching to DIGA functions from VIErA functions When [operate DIGA] of VIErA functions is selected, input of VIErA is switched to DIGA input automatically and it displays DIGA functions. 2. Automatic switching to VIErA operation menu from DIGA operation menu It is function that DIGA operation menu is switched off and VIErA operation menu is switched on when [RETURN] button of VIErA remote controller is pressed while first stage of DIGA operation menu is being displayed, 3. Automatic switch off of GUI display of DIGA when VIErA input selection/ VIErA operation menu is displayed GUI of DIGA is turned off when VIErA input selection is performed while GUI of DIGA is being displayed.And GUI of DIGA is turned off and VIErA operation menu is displayed when VIErA operation menu is displayed while GUI of DIGA is being displayed. GUI Display: Erasable GUI displays above are limited to screen that are erasable by RETURN button in DIRECT NAVIGATOR/ TV GUIDE/ FUNCTIONS/ PROGRAM CHECK/ INITIAL SETTING. However GUI displays that are not erasable by RETURN button in FORMAT process/ ERASE process/ DUBBING process/ FINALIZE process/ CUTION displayed are kept displaying. (3) Remote Control Operation Function that operate DIGA by VIErA remote controller when DIGA screen is displayed on VIErA, · Buttons of Remote Controller that can be operate by VIErA remote controller: , , , , ENTER, RETURN, SUB MENU
(4) Power Link Power of DIGA is turned off linking to POWER OFF of VIErA. · Power of DIGA is not turned on linking to POWER ON of VIErA. · It is limited in following cases that DIGA links to POWER OFF of VIErA. 1. During EE display (While Timer recording is being executed/ Functions is being displayed are included.) 2. Case that DIGA is playing back (only North America/ Japan) However except cases below. · During EE display, but manual recording is being executing/ during EXT_Link recording. · During Tray is being opened. · Case that DIGA is in status that power cannot turn off (during dubbing, during finalize).
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pressed, VIErA POWER ON/ Input switch/ audio mute is set automatically, and audio sound is output from speaker connected amp.
(5) Timer Recording (Reservation Recording) When select [Reserve] of TV GUIDE of VIErA, Reservation information is transmitted by way of HDMI (HDAVI Control), and reservation registration of DIGA is done. · In DIGA, it treats as well as a usual program reservation and Timer Recording reservation. · Linking reservation from VIErA is not done. · Recordable media is fixed to HDD · Recording mode of digital program is fixed to DR and recording mode of analog program is fixed to SP mode.
(6) Recording right now When [REC RIGHT NOW] is selected on GUI of VIErA, CH that is being seen is recorded by DIGA.And when [STOP RIGHT NOW] is selected on GUI of VIErA, recording of DIGA is stopped. · Function of [recording right now] is based on manual recording of DIGA. But recordable media is fixed to HDD. Recording mode is same as latest mode, similarly to manual recording.
(7) Link with Amp In system including DIGA, VIErA, Amplifier or Theater, when [ONE TOUCH THEATER PLAYBACK] button was 17
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6 Location of Controls and Components
6.1. Each Buttons
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7 Operation Instructions
7.1.
7.1.1. 7.1.1.1.
(DVD) Taking out the Disc from RAM-Drive Unit when the Disc cannot be ejected by OPEN/CLOSE button
(DVD) Forcible Disc Eject (DVD) When the power can be turned off.
1. Turn off the power and press [STOP], [CH UP] keys on the front panel simultaneously for 5 seconds.
7.1.1.2.
(DVD) When the power can not be turned off.
1. Press [POWER] key on the front panel for over 10 seconds to turn off the power forcibly, and press [STOP] [CH UP] keys on the front panel simultaneously for 5 seconds.
7.1.2.
(DVD) When the Forcible Disc Eject can not be done.
1. Turn off the power and pull out AC cord. 2. Remove the Top Case. 3. Push in SLIDE CAM by Eject Pin(JSJ0484) or minus screw driver (small) to eject tray slightly.
4. Push out Tray by Eject Pin (JZS0484) or minus screw driver (small).
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7.2.
(VHS) Removing Cassette Tape manually
When the cassette tape could not be uninstalled from an electrical malfunction, there are 2 ways to remove a cassette tape.
7.2.1.
(VHS) Removal by compulsory unloading.
If Service Mode can be activated when the power can not be turned on, this operation is able. 1. Press [STOP] and [EJECT] button simultaneously for more than 3 seconds and set the Service Mode to 7. 2. Press [STOP] button in order to unload the mechanism. (Pay attention to tape slack) Service Mode Display: 7 ** ** (STOP) ® 7 0L ** (EJECT)
7.2.2.
(VHS) Removal by manual operation by rotating the Loading Motor with the batteries.
1. Disconnect the AC plug, and remove the Top Panel and the Front Panel by referring to the Disassembly Procedures. 2. Connect three batteries (1.5V spec.) to the Loading Motor in series for supplying 4.5V to rotate the Loading Motor as shown below.
5. Then unload again to remove the cassette tape as shown below.
7.2.3.
(VHS) Take out Cassette Tapemanually after removing the mechanism
1. Disconnect the AC plug, and remove the Top Case, Front Panel and the Mechanism by referring to "10 Assembling and Disassembling" 3. Stop unloading just before unloading will be completed as shown below, and then the tape becomes slack as shown below. 4. Rotate the S-Reel by a small minus screwdriver to remove the slack tape as shown below. 2. Remove the Screw and remove the Loading Motor as shown below.
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3. Rotate the Main Cam Gear counter-clockwise until just before the unloading will be completed as shown below. .
4. Rotate the Capstan Motor clockwise to remove the slack tape as shown below. 5. Rotate the Main Cam Gear counter-clockwise again to remove the cassette-tape as shown below.
6. Attach Loading Motor and tighten the screw. 7. Set the Position Switch to EJECT POSITION certainly and attach the mechanism to chassis as shown below.
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8 Service Mode
8.1.
8.1.1.
(DVD) Self-Diagnosis and Special Mode Setting
(DVD) Self-Diagnosis Functions
Self-Diagnosis Function provides information for errors to service personnel by "Self-Diagnosis Display" when any error has occurred. U**, H** and F** are stored in memory and held. You can check latest error code by transmitting [0] [1] of Remote Controller in Service Mode. Automatic Display on FL will be cancelled when the power is turned off or AC input is turned off during self-diagnosis display is ON.
Error Code Diagnosis contents U30 Remote control code error Description Monitor Display Display appears when main unit and remote No display controller codes are not matched. Automatic FL display
"*" is remote controller code of the main unit. Display for 5 seconds. U59 temperature Display appears when the drive temperature No display exceeds 70°C. The power is turned off forcibly. For 30 minutes after this, all key entries are disabled. (Fan motor operates at the highest speed for the first 5 minutes. For the remaining 25 minutes, fan motor is also stopped.) The event is saved in memory as well. The unit is carrying out its No display recovery process. Abnormal inner detected
"U59 is displayed for 30 minutes.
U61
U88
The unit is carrying out its recovery process.
No display
U99
Hang-up
Displayed when communication error has No display occurred between Main microprocessor and Timer microprocessor. Displayed is left until [POWER] key is pressed. No display the
H19
Inoperative fan motor
F00
F09
F34
F58 F60
When inoperative fan motor is detected after No display powered on, the power is turned off automatically. The event is saved in memory. No error information Initial setting for error code in memory No display (Error code Initialization is possible with error code initialization and main unit initialization.) Serial Communication Error Please confirm Serial Communication No display between VHS Microprocessor terminal of Microprocessor. and Timer Microprocessor. NOTE: If F09 appears just after updating Firmware, pull off and insert AC plug, then it will disappear. Initialization error when main When initialization error is detected after No display microprocessor is started up starting up main microprocessor for program for program recording recording, the power is turned off automatically. The event is saved in memory. Drive hardware error When drive unit error is detected, the event is No display saved in memory. DVD module has not been Defect of Digital P.C.B. No display Mode: No change started.
No display
No display
No display
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Error Code Diagnosis contents UNSUPPO Unsupported disc error RT
Description Monitor Display *An unsupported format disc was played, "This disc is although the drive starts normally. incompatible." *The data format is not supported, although the media type is supported. *Exceptionally in case of the disc is dirty.
Automatic FL display
Display for 5 seconds. NO READ Disc read error *A disc is flawed or dirty. *A poor quality failed to start. *The track information could not be read. The drive detected a hard error. "Cannot read. Please check the disc." "DVD drive error." Display for 5 seconds.
HARD ERR
Drive error
IR ERR
IR communication error
[IR ERR] is displayed when communication No display between Timer microprocessor and IR microprocessor fails. [No REC] is displayed when recording is No display impossible due to the defect, dirt or wound of media. Since the power cord fell out during a power No display failure or operation, it is under restoration operation. *It will OK, if a display disappears automatically. If a display does not disappear, there is the possibility that defective Digital P.C.B. / RAM drive. Unit is in termination process now. No display "BYE" is displayed and power will be turned off. In case "Quick Start" of setup menu is ON, it is displayed in restoration operation for AC off. You have inserted an unformatted DVD-RAM or DVD-RW that is unformatted or recorded on other equipment.
No REC
Recording is impossible
SELF CHECK
Restoration operation
PLEASE WAIT
Unit is in termination process
UNFORM Unformatted disc error AT
HDD ERROR
[HDD ERR] is displayed when start up of HDD was failed. (Except error of setting of Power on Stand-by)
HDD NG
Power on error
Stand-by
a) When normal start up was failed. No display b) When start up at HDD boot was failed. c) When start up from state of P-OFF was failed. d) When start up from state of HDD SLEEP was failed. [HDD ERR] is displayed when above each start up of HDD was failed. *In case b), tary opens automatically and [HDDERR] is displayed until version up disc is inserted. setting [HDD NG] is displayed when power on Stand- No display by setting of HDD is NG or when HDD which power on Stand-by is not set to is used. Please try to replace HDD with junine HDD as service parts.
8.1.2.
(DVD) Special Modes Setting
Item FL display Description *All the main unit´s parameters (include tuner) are initialized. Key operation Front Key Press [VHS to DVD DUBBING], [REC] and [OPEN/CLOSE] keys simultaneously for five seconds when power is off. Set DRIVE SELECT to [DVD]. While the tray is open, press [REC] and [PLAY] simultaneously for 5 seconds.
Mode name TEST Mode
Rating password
The audiovisual level setting password is initialized to "Level 8".
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Item Mode name Service Mode Description Setting every kind of modes for servicing. *Details are described in "8.1.3. (DVD) Service Modes at a glance".
FL display
Forced disc eject
Removing a disc that cannot be ejected. The display The tray will open and unit will shift to P-off leaves. mode. *When Timer REC is ON or EXT-LINK is ON, execute " Forced disc eject " after releasing Timer REC or EXT-LINK. While Demonstration Lock is being set, this Forced disc eject function is not accepted.
before
Key operation Front Key When the power is off, press [VHS to DVD DUBBING], [OPEN/CLOSE] and [STOP] keys simultaneously for 5 seconds. execution When the power is off, press [STOP] and [CH UP] keys simultaneously for 5 seconds.
Forced power-off
Aging
When the power button is not effective while Display in P-off mode. power is ON, turn off the power forcibly. *When Timer REC is ON or EXT-LINK is ON, execute "Forced Power-off" after releasing Timer REC or EXT-LINK. Perform sequence of modes as * Aging Display following the then mode. Description shown below continually.
Press [POWER] key over than 10 seconds.
When the power is ON, press [CH DOWN], [VHS to DVD DUBBING] and [OPEN/CLOSE] simultaneously for over 5 seconds and less than 10 seconds.
NOTE1:
If Unit has not turned into Aging mode by operations shown above, execute TEST MODE once and reexecute operation shown above. (*All the main unit's parameters include tuner are initialized by TEST mode.)
NOTE2:
If the unit has hung-up because of pressing keys for over 10 seconds, once turn off the power, and reexecute this command. *When releasing Aging mode, press [POWER] key.
Aging Contents (Example):
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Mode name Demonstration lock/unlock
FL display Description Ejection of the disc is prohibited. *When lock the tray. The lock setting is effective until unlocking the tray and not released by "Main unit initialization" of service mode. "LOCK" is displayed for 3 seconds. *When unlock the tray.
Item
Key operation Front Key When the power is on, press [STOP] and [POWER] keys simultaneously for 5 seconds.
Note:
When a disc is not in tray, this setting is not effective. When the power is on, press [STOP] and [POWER] keys simultaneously for 5 seconds.
"UNLOCK" is displayed for 3 seconds. *When press OPEN/CLOSE key Press [OPEN/CLOSE] key while the while the tray being locked. tray being locked.
Progressive initialization
Display "LOCK" for 3 seconds. The progressive setting is initialized to The display before execution When the power is on (E-E mode), Interlace. leaves. press [STOP] and [VHS to DVD DUBBING] simultaneously for 5 seconds.
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DMR-EH75VP
8.1.3.
(DVD) Service Modes at a glance
Service mode setting: While the power is off, press [STOP], [VHS to DVD DUBBING] and [OPEN / CLOSE] simultaneously for five seconds (OPERATION SELECT should be set to DVD).
Item Mode name Release Items Description Item of Service Mode executing is cancelled. FL display Key operation (Remote controller key) Press [0] [0] or [Return] in service mode. Press [0] [1] in service mode
Error Code Display
Last Error Code of U/H/F held by Timer is displayed on FL. *Details are described in "8.1.1. (DVD) SelfDiagnosis Functions".
If any error history dose not exist, [F00] is displayed. ROM Version Display 1. 2. 3. 4. 5. Region code (displayed for 5 sec.) Main firm version (displayed for 5 sec.) Timer firm version (displayed for 5 sec.) Drive firm version (displayed for 5 sec.) ROM correction version (displayed for 5 sec.) 6. VHS Microprocessor version (displayed for 5 sec.) 7. VHS ROM correction version (left displated) Press [0] [2] in service mode
White Picture Output
`''' are version displays. White picture is output as component Output *Initial mode is "Interlace". from AV Decoder. *White picture (Saturation rate : 100%) *It is enable to switch Interlace/Progressive by Switch Interlace/Progressive "I/P switch: [1] [4]"
Press [1] [1] in service mode.
Press [1] [4] in White Picture Output mode. *I/P are switched alternately. Press [1] [2] in service mode.
Magenta Picture Output
Magenta picture is output with Component *Initial mode is "Interlace". Output from AV Decoder. *Magenta picture (Saturation rate: 100%) *It is enable to switch Interlace/Progressive by Switch Interlace/Progressive "I/P switch: [1] [4]"
Press [1] [4] in Magenta Picture Output mode. *I/P are switched alternately.
RTSC Return in XP (A & V)
L1 input signal is encoded (XP), decoded Initial mode: EE2/ Interlace/ XP/ Press [1] [3] in service mode. (XP) and output decoded signal to external Audio 48kHz without DISC recording and DISC playback.
Switch Interlace/Progressive
Press [1] [4] in RTSC Return XP mode. *I/P are switched alternately. Press [2] [4] in RTSC Return XP mode. *48 kHz / 44.1 kHz are switched alternately.
Audio 44.1 kHz/ 48 kHz Switch
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DMR-EH75VP
Mode name I/P Switch
FL display Description Switch Interlace and Progressive in EE mode. Initial mode is Interlace *Initial setting is "Interlace". *This command is effective during executing "White Picture Output", "Magenta Picture Output" and "RTSC Return in XP (A & V)" Switch Interlace/Progressive modes.
Item
Key operation (Remote controller key) Press [1] [4] in I/P Switch mode. *I/P are switched alternately.
Audio Mute (XTMUTE)
Check whether mute is applied normally by the timer microprocessor. Check whether mute is applied normally by the Digital P.C.B.. The audio pattern stored in the internal Initial mode (Audio 48kHz) memory is output (Lch: 1kHz/-18dB) (Rch: 400Hz/-18dB) *Audio sound clock switching operation of DAC can be confirmed by sub command [2] Audio 44.1kHz/48kHz switching [4].
Press [2] [1] in service mode.
Audio Mute (XDMUTE)
Press [2] [2] in service mode.
Audio Pattern Output
Press [2] [3] in service mode.
Press [2] [4] in Audio Pattern Output mode. *48 kHz / 44.1 kHz are switched alternately. Press [3] [1] in service mode. *When canceling the checking mode while executing, do "forced power-off". Method: Press the "POWER" button more than 10 seconds.
HDD READ inspection
Perform a complete read inspection of the When the HDD is OK HDD.
If the HDD is defective
Laser Used Indiction
Time Check laser used time (hours) of drive.
Press [4] [1] in service mode.
l(*****) is the used time display in hour. lLaser used time of DVD/ CD in Playback/Recording mode is counted. Delete the Laser Used Laser used time stored in the memory of the Time unit is deleted. Press [9] [5] in service mode.
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DMR-EH75VP
Mode name RAM Drive Last Error
Key operation Description (Remote controller key) RAM Drive error code display. 1. Error Number is displayed for 5 Press [4] [2] in service mode. *For details about the drive error code, refer seconds. When "INFO******" is being to the Service Manual for the specific RAM displayed, past 19 error histories Drive. can be displayed by pressing [0] [1] - [1] [9] 2. Time when the error has occurred is displayed for 5 seconds.
Item
FL display
DD: Day hh: Hour mm: Minute 3. Last Drive Error (1/2) is displayed for 5 seconds.
4. Last Drive Error (2/2) is displayed for 5 seconds.
5. Error occurring Disc type is displayed for 5 seconds.
6. Disc Maker ID is displayed for 5 seconds.
In case that the maker cannot be identified, display is black out.
7. Factor of Drive Error occurring is left displayed
Delete the Last Drive Delete the Last Drive Error information stored Error on the DVD RAM-Drive. Laser power confirmation Drive state is judged based on difference between laser power value at shipping and present laser power value.
Press [9] [6] in service mode.
1.
into RAM Drive in service mode. (Other media are assumed to be noncorrespondence.)
2. Press [4] [4].
Turn on all FL/LEDs S1 signal output
If DVD-RAM disc in not inserted, [NO DISC] is displayed. If power value study was filed, [ERROR] is displayed. All segments of FL and all LEDs are turned All segments are turned on. Press [5] [1] in service mode. on. Forcibly superimpose the S1 signal (approx. Press [5] [2] in service mode. 4.5V DC) on the EE chroma signal, and check the output on the S terminal. Forcibly superimpose the S2 signal (approx. 2V DC) on the EE chroma signal, and check the output on the S terminal. Press [5] [3] in service mode.
S2 signal output
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DMR-EH75VP
Item Mode name Description Front connection Press all front keys and check the connection inspection between Main P.C.B. and Front key Switches.
FL display
Key operation (Remote controller key) Press [5] [4] in service mode.
(1) Each time a key is pressed, segment turned on increases one by one. (2) Total umber of keys that have been pressed. Production Date Display Display the date when the unit was produced. Press [6] [1] in service mode.
YY: Year MM: Month DD: Day Display the accumlated Display the accumulated unit´s working time. working time (Indicating unit: Second) Display reason of error seconds. Press [6] [4] in service mode.
Display the Error History Display the Error History stored on the unit.
for
5 Press [6] [5] in service mode. Then press [0] [1] ~ [1] [9], the past 19 error histories are displayed.
01: Defect of Digital P.C.B. (AV DEC / MAIN CPU) 02: Defect of RAM Drive. 03: Defect of Disc. 04: Defect of Digital P.C.B. Communication Error. 05: Defect of Digital P.C.B. (AV DEC / MAIN CPU)
or
Display the time when the error has occurred for 5 seconds.
DD: Day hh: Hour mm: Minute Accumulated occuring of displayed.
working time till the error is left
(Indicating unit: Second) Delete the Error History Delete Error History information stored on the unit. Delete Error History information stored on the When the WRITE check is OK. unit. Press [9] [7] in service mode.
SD card WRITE check
When the WRITE check is NG.
Insert a SD card to SD card slot, and press [7] [4] in service mode. *Insert SD card while the power is off. *Check for [CARD SD] display on the FL display and go on the procedure.
*Note:
The image stored in the SD card will be erased.
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DMR-EH75VP
Item Mode name Description Tray OPEN/CLOSE Test The RAM drive tray is opened and closed repeatedly.
FL display
"*" is number of open/close cycle times. Error code initialization Initialization of the last error code held by timer (Write in F00) Last Drive Error, Error history and Error Codes stored on the unit are initialized to factory setting. Release Service Mode. Display in STOP (E-E) mode.
Key operation (Remote controller key) Press [9] [1] in service mode *When releasing this mode, press the [POWER] button of Remote Controller more than 10 seconds. Press [9] [8] in service mode.
Initialize Service
Press [9] [9] in service mode.
Finishing service mode
Press power button on the front panel or Remote controller in service mode.
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DMR-EH75VP
8.2.
8.2.1.
(VHS) Self-Diagnosis and Special Mode Setting
(VHS) Self-Diagnosis Functions
This model has a self-diagnosis and display function. If the VHS section detects trouble during installation or during use, one of the following Error Codes will automatically appear in the display on VHS side. Error Codes are displayed in the form of a single English letter followed by two numbers, as for example "H01". Note: 1. The indication "U" is displayed on the FIP while power remains on. 2. The indication "H" or "F" is displayed on the FIP, and the power is automatically turned off. When the power is turned on again, the Error indication code will disappear and the unit will return to normal display mode (either clock or counter is displayed). 3. This Error indication code will be stored in the microprocessor even after the AC plug being disconnected. The two-digit number portion of the stored Error indication code can be re-displayed in "second" display portion (the last 2 digits of the FIP) by placing the unit is Service Mode Number 3 When turning on Service Data Display as for example "01" or "02" etc. If a second error occurs, the most recent error will be displayed and stored until 3 self-diagnosis histories in maximum. 4. To erase the stored Error Code data, Press FF and EJECT buttons on VCR simultaneously for over 5 seconds in Service Mode 3.
Error Number at a glance
Memory No. (Error No.) H01 H02 F03 F04 F05 F06 F09 H07 H08 U11 F15 H16 H17 H18 F20 F21 F22 F23 H80 Reason The cylinder could not be started. Yes (Error of the cylinder or the cylinder driver.) The CAP FG could not be detected. Yes Mechanism lock during without the unloading and the cassette-up. Yes Mechanism lock during unloading Yes S-reel pulse cannot be detected when a cassette tape is inserted. No (Error of the S-reel system or the Capstan system.) Mechanism lock during the Cassette-up. Yes Communication Error between VHS Microprocessor (IC6001) and Timer Yes Microprocessor (IC7501) The recording circuit can not be operated in REC mode. Yes The recording circuit is operated in except for REC mode. Yes Cylinder clogs during the PLAY mode. Yes S-reel pulse cannot be detected when a cassette tape is inserted. No (Error of the S-reel system or the Capstan system.) Detection of the Cylinder lock during the constant rotation No Detection of S-reel lock during the constant tape running Yes Detection of T-reel lock during the constant tape running Yes NG1 in the PG Shifter Automatic Adjustment Yes (The cylinder rotation is unstable during the automatic adjustment.) NG2 in the PG Shifter Automatic Adjustment Yes (The vertical sync signal is lacked while over 5 seconds on the alignment tape.) NG3 in the PG Shifter Automatic Adjustment Yes (The installing position of Heads to the cylinder is our of specification.) NG4 in the PG Shifter Automatic Adjustment Yes (The servo is not locked to the cylinder for more than 10 sec.) An exceptional ejection depends on a Error No Automatic display Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Memory
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DMR-EH75VP
8.2.2.
(VHS) Special Modes Setting
Item Mode name Tracking Center Description Tape Tracking is adjusted to center No display. FIX position. In order to make service easy, a part of inside information of a microprocessor is displayed on FIP. *Details are described in "8.2.3. (VHS) Service Modes ".
FL display
VHS Service Mode
Key operation Front Key During PLAYBACK, press [CH UP] and [CH DOWN] keys simultaneously. Press [STOP], and [EJECT] keys simultaneously for 3 seconds when power is off.
Eject
Ejecting Cassette Tape
No display.
While in other than Timer REC mode, press [STOP] key for 3 seconds or press [STOP] key of the Remote Controller for 3 seconds in VHS mode.
8.2.3.
(VHS) Service Modes
Set OPERATION SELECT to VHS. When power is OFF, press [STOP] and [EJECT] keys simultaneously for 3 seconds to into Service Mode. In Service Mode, press [STOP] and [EJECT] keys simultaneously to add Service Number.
8.2.3.1.
(VHS) Service Mode and Service Data at a glance
Contents of Indication on minute the VHS mode of (Real time) VCR mode (OPM) Contents of Indication on second Remarks
Service Contents Number 0 Indication for inner data IC6001
1
Indication for inner data IC6001
Process number (Real time) Management number of the processing during mechanism shifting the Starting / finishing edges detecting Data of receiving key (Real time) of data (Real time) 00: Both starting / finishing edges Indicate the receiving code when the have not been key of VCR or remote controller 01: Starting edge is detecting now being operated. 02: Finishing edge is detecting now 03: Both starting / finishing edges are detecting now
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DMR-EH75VP
Service Contents Number 2 Indication for inner data IC6001
Contents of Indication on minute the Mechanism position of (Real time) 0L: EJECT position 02: DOWN position 03: RREW position 04: LOAD position 05: REV position 06: PLAY position 07: POFF position 08: STOP_R position 09: STOP_F position - : FF/REW position - : Intermediate between each positions
Contents of Indication on second Ordering for the Motors (Real time) 0*, 2*: CYL off, CAP off 1*: CYL off, CAP on (fwd) 3*: CYL off, CAP on (rev) 8*, A*: CYL on, CAP off 9*: CYL on, CAP on (fwd) B*: CYL on, CAP on (rev) *0: Motor off *1: Loading *2: Unloading *3: Break (Load + Unload)
Remarks
3 4
Self-diagnosis history (1st) Self-diagnosis history (2nd)
Error number of history 1 Error number of history 2
5 6
Self-diagnosis history (3rd) Indication for inner data IC6001
Error number of history 3
There are next conditions in this mode for enable the mechanism operations without a cassette tape. l The starting / finishing edges are not detected. l The reel lock is not detected l The tape and the positions are not detected. , And so on. Press the EJET key for over 3 seconds in this mode, and then the VCR is shifted into the special modes, such as PG Adjustment, Model Code Setting, and so on. The orders for the motors are as follows. Bit 7: CYL ON/OFF Bit 6: -----------------Bit 5: CAP FWD/REV Bit 4: CAP ON/OFF Bit 3: -----------------Bit 2: -----------------Bit 1: UNLOADING(H) Bit 0: LOADING(H) Supplementary data 1 and 2 of In the Self-Diagnosis Memory, next 3 history 1. BYTE is memorized for an Error. Supplementary data 1 and 2 of 1 BYTE: Its Error number 2 BYTE: Its supplementary data history 2. In these modes, the supplementary data 3 and 4 instead of the Error Supplementary data 1 and 2 of number and supplementary data 1 and 2 are indicated only while history 3. pressing STOP key.
7
the Real time servo data (4 digits) of (Real time) Higher rank 1 BYTE of SERVO data Lower rank 1 BYTE of SERVO data Manual mechanism Real time mechanism position Real time ordering for the Motors Press the STOP key, and then the operation cassette tape is unloaded. 0L: EJECT position 0*, 2*: CYL off, 02: DOWN position CAP off 03: RREW position 1*: CYL off, 04: LOAD position CAP on (fwd) 05: REV position 8*, A*: CYL on, 06: PLAY position CAP off 07: POFF position 9*: CYL on, 08: STOP_R position CAP on (fwd) 09: STOP_F position B*: CYL on, - : FF/REW position CAP on (rev) - : Intermediate between *0: Motor off each positions *1: Loading *2: Unloading *3: Break (Load + Unload)
8.2.3.2.
Example of FIP
8.2.4. 8.2.4.1.
(VHS) Self-Diagnosis History Memory Function (VHS) Condition for memorizing of the self-diagnosis history
1. The self-diagnosis result and the supplementary data are the condition memorized just as an Error is detected. 2. There are the histories from number 1 to number 3. 3. The latest Error is memorized on history number 1,and then the old histories are shifted to the history number 2, 3. 4. Put out data from the memory number 3 by the shift is deleted. 5. If the latest Error is same with the history number 1 (2nd-latest), it is not memorized. (The same Error number is not memorized in succession) 34
DMR-EH75VP
8.2.4.2. 8.2.4.3.
(VHS) Condition for clearing the self-diagnosis history (VHS) Indication of the self-diagnosis history.
1. A case of that press the FF key and the EJECT key simultaneously over 5 seconds.
1. The self-diagnosis histories and its supplementary data could be indicated on the FIP with Service mode of number from 3 to 5. 2. The procedure of setting the service mode and the format if the indication are same as usual.
Both the Error numbers and its supplementary data of history 1, 2and 3 are indicated by selecting the Service mode 3, 4 and 5 as shown above. In case of that any Error has not been memorized, the Error number and its supplementary data is indicated as " - ".
8.2.4.4.
(VHS) Display of Supplementary Data 3 and 4
During displaying the Self-Diagnosis History, press [STOP] key on front panel to change the display. *Example of Display
A: Service Mode Number. B: Supplementary Data 3...Mechanism process shifting Number. C: Supplementary Data 4...LM(Loading Motor information) means that " Loading Motor turns ON when [EJECT] button was pressed, but an error has *Display of occurred while mechanism was between REV position and LOAD position.
[EJECT] 10: PLAY ® passing REV 11: passing REV 12: passing REV ® LOAD (Capstan STOP) 13: LOAD ® DOWN 14: DOWN ® EJECT 15: EJECT completion [PLAY] 20: Cylinder starting up, Phase drawing 21: Audio muting, VV selection [P.ON] -- Process of turning on power [P.OFF] 70: PLAY ® P.OFF [FF] U0: PLAY ® STOP F U1: STOP F ® FF U2: FF starting up [REW] A0: PLAY ® STOP F A1: STOP ® REW A2: REW starting up
[REC] 30: Cylinder starting up, Phase drawing 31: REC signal output [STILL ® PLAY] 48: Tape sending [CUE ® PLAY] 4A: Finishing edge Checking, Tape sending 4-: PLAY Checking, Tape sending
[STILL] 40:Turning forward 41:Speed is 0, Capstan is OFF [CUE] 49: x2 speed sending, Turning point of Calculating remains [REV] 80: PLAY ® P.OFF 81: Rewinding P.OFF ® REV
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DMR-EH75VP
(LM Information) Result of request of driving Loading Motor.
Display 1 2 Description There was no change of mechanism position. (Loading Motor was OFF) There was some change of mechanism position. (Loading Motor was ON)
8.2.5.
(VHS) Description of Self Diagnosis Memory
In this Self-Diagnosis Function, in case error has occurred continuously, maximum of the newest 3 error data are memorized. And in order to analyze cause of error, the error number and the supplementary data of mode, mechanism position and so on are memorized.
8.2.5.1.
(VHS) Error Number and Supplementary Data
The Supplementary Data as shown below are memorized to each error number.
Error No. 01 02 03 04 05 Reason The cylinder could not be started. (Error of the cylinder or the cylinder driver.) The CAP FG could not be detected. Mechanism lock during without the unloading and the cassette-up. Mechanism lock during unloading S-reel pulse cannot be detected when a cassette tape is inserted. (Error of the S-reel system or the Capstan system.) Mechanism lock during the Cassette-up. The recording circuit can not be operated in REC mode. The recording circuit is operated in except for REC mode. Serial communication Error between VHS Microprocessor (IC6001) and Timer Microprocessor (IC7501). Cylinder clogs during the PLAY mode. S-reel pulse cannot be detected when a cassette tape is inserted. (Error of the S-reel system or the Capstan system.) Detection of the Cylinder lock during the constant rotation Detection of S-reel lock during the constant tape running Detection of T-reel lock during the constant tape running NG1 in the PG Shifter Automatic Adjustment (The cylinder rotation is unstable during the automatic adjustment.) NG2 in the PG Shifter Automatic Adjustment (The vertical sync signal is lacked while over 5 seconds on the alignment tape.) NG3 in the PG Shifter Automatic Adjustment (The installing position of Heads to the cylinder is our of specification.) NG4 in the PG Shifter Automatic Adjustment (The servo is not locked to the cylinder for more than 10 sec.) An exceptional ejection depends on a Error Data 1 VHS mode VHS mode VHS mode VHS mode VHS mode Supplementary Data Data 2 Data 3 Process No. Process No. Process No. Process No. Data 4 Number of FG LM information LM information LM information
Standby position Tape position
06 07 08 09
VHS mode VHS mode VHS mode -
Standby position -
Process No. Process No. Process No. -
LM information -
11 15
VHS mode VHS mode
Process No. Value of S-Reel Pulse Process No. counted Tape position Tape position Tape position Process No. Process No. Process No. Process No.
-
16 17 18 20
VHS mode VHS mode VHS mode VHS mode
Number of FG Number of FG -
21
VHS mode
-
Process No.
-
22
VHS mode
-
Process No.
-
23
VHS mode
-
Process No.
-
80
VHS mode
Refer to *Note 3
Process No.
-
Note 1: Details of "VHS mode" of the Supplementary Data 1 (These values are hexadecimal indication) 0: STOP, 1: EJECT, 2: REW, 3: FF, 4:REV, 5: CUE, 6: SLOW, 7: POWEROFF, 8: PLAY, 9: STIL, A: REC, B: REC PAUSE, C: ADUB, D: ADUB PAUSE, E: INSERT, F: INSERT PAUSE Note 2: Explanation of "Tape position" of the Supplementary Data The Tape position Data is the area data of S-reel that is used for judgment of reducing speed in the Main microprocessor IC6001, and as the tape position is moved from the starting edge to the finishing edge, the value becomes smaller. The Tape Data does not become "0" even if the tape reaches the finishing edge as the hub remains, and the tape position values are different between the large hub and the small hub as the each diameters are different from each other. 36
DMR-EH75VP
Tape Type 60 min. or less type (Large Hub) 90 min. or over type (Small Hub)
The aim of Tape position between the starting edge and the finishing edge The Tape position is divided into 6 stages between the Tape beginning edge: "A " and the Tape end edge: "5". The Tape position is divided into 14 stages between the Tape beginning edge: "E " and the Tape end edge: "1".
l "A" and "E" is hexadecimal. "A" =10 (Decimal), "E" =14 (Decimal). l Hexadecimal indication from "A" to "E" are shown below.
Note 3: Supplementary Data 2 (Reason of Ejection)
Supplementary Data 2 1 2 3 4 Reason S-reel pulse is less than 3 when the loading has been completed. (Miss catching the tape) Pulse Timer over during the short rewind at the DOWN position. (Error of S-photo sensor system, S-reel system, Capstan system) Mechanism lock from the DOWN position to the LOAD position during the loading. Both ends have been detected at the LOAD position when the loading is started.
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DMR-EH75VP
9 Service Fixture & Tools
(For DVD)
Part Number RFKZ0168 RFKZ0327 RFKZ0240 RFKZ0368 RFKZ0215 RFKZ0339 RFKZ0367 RFKZ0239 RFKZ0260 JZS0484 RFKZ03D01K RFKZ06D01K RFKZ10D01K RFKZ0316 RFKZ0328 RFKZ0329 Description Cable (Power & Digital I/F P.C.B. - FAN / 3 Pin) Same as Cable (Main P.C.B. - Power & Digital I/F P.C.B. / 15 Pin / 40 mm) Same as Cable (Main P.C.B. - Power & Digital I/F P.C.B. / 19 Pin / 40 mm) Same as Cable (Main P.C.B. - Power & Digital I/F P.C.B. / 11 Pin / 40 mm) New Cable (Main P.C.B. - FL Drive P.C.B. / 12 Pin) Same as Series Extension Cable (Power & Digital I/F P.C.B. - HDD / 4 Pin) New Extension Cable (Power & Digital I/F P.C.B. - FL Drive / 6 Pin) New Extension Cable (Main P.C.B. - Front Jack P.C.B. / 10 Pin) Same as Extension Cable (Main P.C.B. - RAM / Digital P.C.B. Module / 88 Pin) Same as Eject Pin Same as Lead Free Solder (0.3mm/100g Reel) Same as Lead Free Solder (0.6mm/100g Reel) Same as Lead Free Solder (1.0mm/100g Reel)) Same as Solder Remover (Lead free 10W temperature Solder/180g) Same as Flux Same as Bottle of Flux Same as Extension Extension Extension Extension Extension Compatibility E50 / ES30V / ES40V Series ES40V Series ES75V / ES30V / ES40V Series ES15 / E55 / ES30V / ES40V
E75V ES10 ES15 ES15 ES15 ES15 ES15 ES15 ES15
/ ES30V Series Series / E50 Series Series Series Series Series Series Series
(For VHS)
Part Number VFM8080HQFP VFK0329 VFK0330 Description NTSC VHS Alignment Tape Post Adjustment Screwdriver Fine Adjustment Gear Driver Compatibility Same as E75V / ES30V / ES40V Same as E75V / ES30V / ES40V Same as E75V / ES30V / ES40V
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DMR-EH75VP
10 Assembling and Disassembling
10.1. Disassembly Flow Chart
The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the servicing. To assemble the unit, reverse the steps shown in the chart below.
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DMR-EH75VP
10.2. P.C.B. Positions
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DMR-EH75VP
10.3. Caution with inserting cassette tape when disassembling the unit
Note1: For description of the disassembling procedure, see the section 10.4. Note2: Video Cassette might not enter when a strong lighting is applied to VHS Mechanism when Video Cassette is inserted. Please weaken the lighting or cover with the top panel etc.
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DMR-EH75VP
10.4. Top Case
1. Remove the 4 screws (A) and 3 screws (B). 2. Slide Top Case rearward and open the both ends at rear side of the Top Case a little and lift the Top Case in the direction of the arrows.
10.5. Front Panel
1. Remove one screw (A). 2. Unlock tab (A) and tab (B) simultaneously. 3. Unlock tab (C) and tab (D) simultaneously. 4. Unlock 2 tabs (E) respectively, and pull out Front Panel with connector slightly.
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DMR-EH75VP
Note: When attaching Front Panel, in order to hook Cassette Door Opener Lever to Cassette Door, push up cassette door in the direction of arrow and insert a front panel.
10.7. RAM / Digital P.C.B. Module
1. Remove 3 Screws (A).
10.6. Front (L) P.C.B. & Front (R) P.C.B.
1. Remove 5 screws (A) to remove Front (R) P.C.B. 2. Remove 3 screws (B) and unlock Locking Tab (A) to remove Front (L) P.C.B. 2. With holding DVD drive as below illustration, remove 3 Screws (B) and disconnect 3 FFCs. And lift up Digital P.C.B. slightly so to disconnect connectors to remove Digital P.C.B..
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DMR-EH75VP
Note: 3. Put Digital P.C.B. on RAM Drive and remove RAM/Digital P.C.B. Module. RAM/Digital P.C.B. Module as service part has no heat sink unit. Before returning to customer, heat sink unit should be installed on Digital P.C.B..
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DMR-EH75VP
10.8. HDD
1. Remove 2 Screws (A).
2. Disconnect the wire with connector from Digital I/F P.C.B.. 3. Remove the 4 Screws (B) and FFC to remove HDD Bracket with HDD.
Handling of HDD The following precautions should be taken when handling HDD. 1. Never give an impact to HDD. (Even a drop from 1cm height can be a cause of HDD failure. 2. When placing HDD on a workbench, provide a mat on a bench for shock absorption and anti-static purposes. 3. When installing HDD, release it from your hands only after confirming that it is fully set on the chassis. 4. Avoid stacking up HDD. 5. HDD is unstable and easy to fall. Do not stand it on its side face. 6. When handling HDD, hold its side faces to avoid static hazard. 7. Do not place HDD on its wrapping bag after removal. (Prevention of static hazard 8. Use a screwdriver with low impact and anti-static features.
4. Put HDD with HDD angle up and down inversely so as not to give a shock to HDD.
Note:
When replacing HDD, please make the rear jumper slave or cable select configuration.
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DMR-EH75VP
5. Remove the 4 Screws (C) to remove HDD from HDD Bracket.
Note: Pay attention to stiff connections of P2571 and P3001, when removing VTR Mechanism Unit.
10.9.1. Caution for attaching VTR Mechanism Unit
1. Because Position SW should be set to "Eject Position", refer to fig.(A) and set the position switch so that the boss and arrow mark come on a straight line. 2. Attach VTR Mechanism Unit so that Boss of Position SW is put into long hole of Main Cam Gear, refer to Fig. (B).
10.9. VTR Mechanism Unit
1. Disconnect 3 Connectors (P1531, P2501 and P4002). 2. Remove 3 Screws (A), Screw (B) , Screw (C) and Screw (D). 3. Lift up VTR Mechanism Unit perpendicularly so to disconnect Connectors (P2571 and P3001).
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DMR-EH75VP
10.10. SD Card/DV Jack P.C.B.
1. Remove 7 Screws (A). 2. Remove SD Card/DV Jack P.C.B. with Digital Angle.
10.11.1.1. Only Fan Motor
1. Disconnect Fan Connector. 2. Remove 2 Screws (A) to Remove Fan Motor.
10.11. Rear Panel & Fan Motor
10.11.1. Rear Panel with Fan Motor
1. Disconnect Fan Connector. 2. Remove 8 Screws (A) and 2 Screws (B). 3. Unlock 2 Locking Tabs (A) to remove Rear Panel with Fan Motor.
10.12. HDMI P.C.B.
1. Disconnect FFC. 2. Pull up HDMI P.C.B. for the direction of arrow.
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10.13. Power & Digital I/F P.C.B.
10.14. Main P.C.B.
1. Disconnect 5 Connectors. 2. Remove 2 Screws (A) and remove Main P.C.B.
1. Disconnect 5 Connectors (A). 2. Remove the 2 Screws (A). 3. Remove Power & Digital I/F P.C.B.
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11 Measurements and Adjustments
11.1. Service Positions
Note: For description of the disassembling procedure, see the section 10.
11.1.1. Checking and Repairing of Power & Digital I/F P.C.B.
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11.1.2. Checking and Repairing of Main P.C.B.
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11.1.2.1. Checking IR Circuit
NOTE1: Even if Main P.C.B. is not removed, IR Circuit can be checked. NOTE2: Prepare the Oscilloscope 1. Remove Top Case. 2. Turn on the power. Then if "Welcome ..." was displayed on the TV monitor, press [ENTER] to advance next stage. Then press [ENTER] and proceed to step 6. (*After "EPG" has been set up, this indication will not appear.) 3. Press [FUNCTIONS]. 4. Select "TV GUIDE", and then press [ENTER]. 5. Press [ENTER] to advance next stage. 6. Press [ENTER] to advance next stage. 7. Select "USA", and then press [ENTER]. 8. Input "0 2 0 3 2", and then press [ENTER]. 9. Select "Yes", and then press [ENTER]. 10. Select "Yes", and then press [ENTER]. 11. Select "Ch3", and then press [ENTER]. 12. Press [ENTER]. 13. Select "Not Listed", and then press [ENTER]. 14. Connect scope to JK38001-4
15. Press [ENTER], and then if the P.C.B. is "OK", pulse signals of approx. 4.5Vp-p are output twice from JK38001-4. (When you want to check again, select "Test this code again" and press [ENTER], then Pulse signals are output again.
*Recommended ranges of the Oscilloscope: V: DC range, and 1V/div. T: 1msec. /div. 51
DMR-EH75VP
11.1.3. Checking and Repairing of RAM / Digital P.C.B. Module
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11.1.4. Checking and Repairing of HDD
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11.2. Caution for Replacing Parts
11.2.1. Notice for replacing parts of VHS Mechanism 11.2.1.1. Regarding change of parts of VHS mechanism
11.2.2. Notice for Replacing Capstan Motor
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11.2.3. Items that should be done after replacing parts
Note2: Please prepare latest firmware updating disc. * Main Firm is being recorded in HDD, but new HDD has no data. Writing Procedure of Main Firm: <> (1) Writing of Main Firm needs 3, 4 minutes. (2) Never cut the power of DVD Recorder until writing in Firmware ends. (3) Initial settings and contents of reservation will not change if writing is normally completed. 1. Prepare updating disc for firm ware. 2. Replace HDD. 3. Turn on power of DVD Recorder. 4. After [PLEASE WAIT] is displayed on FL., [HDD ERR] is displayed on FL. 5. Tray opens automatically. 6. Insert updating disc for Firmware and press OPEN/CLOSE key. (If a wrong disc was inserted, [NG DISK] [NO FVU] is displayed on FL.) 7. [LOAD] ® [LD FVU] ¬® [M_FIRM] are displayed on FL alternately. 8. [MAIN] ¬® [UPD OK] blink alternately and Tray opens. Take out disc (Writing was finished). 9. Press Power button to turn off power. 10. Press Power button to turn on power. 11. [HELLO] ® [SELF CHECK] are displayed on FL. 12. [UNFORMAT] is displayed on FL. 13. After [UNFORMAT] was displayed, message to request FORMAT is displayed on TV screen. 14. Select [Yes] and press [ENTER] key to format HDD. (After FORMAT, program in HDD will be lost, but Main firm will not be lost. "Write of the main farm" is completed above.
* Drive firm is not updated by above operation. If you wish update Drive firm, please prepare the disc for latest firmware update, and write it again. * If the version of the firm you have prepared was same as or later than that has already been written in deck, ´UNSUPPORT´ is displayed on FL. 55
DMR-EH75VP
* In a usual updating of firmware, writing is not performed when the timer reservation standby was not released.
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11.3. Standard Inspection Specifications after Making Repairs
After making repairs, we recommend performing the following inspection, to check normal operation.
No. 1 2 3 4 Item to Check Items pointed out should reappear. The Panasonic RAM disc should be recognized. No abnormality should be seen in the picture, sound or operation. No abnormality should be seen in the picture, sound or operation. *Panasonic DVD-RAM disc should be used when recording and playback. If a problem is caused by a VCD, DVD-R, DVD-Video, Audio-CD, or No abnormality should be seen in the picture, sound or operation. MP3, playback the test disc. Models with SD Card Slot or DV Input Jack: In case of that the Models with SD Card Slot or DV Input Jack; trouble is caused by SD card or DV terminal. 1) SD card: Check to be able to display and copy the picture. 2) DV terminal: Check to be able to record from DVC. After checking and making repairs, upgrade the firmware to the Make sure that [FIRM_SUCCESS] appears in the FL displays. latest version. *[UNSUPPORT] display means the unit is already updated to newest same version. Then version up is not necessary. Transfer [9][9] in the service mode setting, and initialize the service Make sure that [CLR] appears in the FL display. settings (return various settings and error information to their After checking it, turn the power off. default values. The laser time is not included in this initialization). Procedure Turn on the power, and confirm items pointed out. Insert RAM disc. Enter the EE (TU IN / AV IN - AV OUT) mode. Perform auto recording and playback for one minute using the RAM disc.
5 6
7
8
Use the following checklist to establish the judgement criteria for the picture and sound.
Item Block noise Crosscut noise Dot noise Picture disruption Not bright enough Too bright Flickering color Color fading Contents Check Item Contents Distorted sound Noise (static, background noise, etc.) The sound level is too low. The sound level is too high. The sound level changes. Check
Picture
Sound
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DMR-EH75VP
12 Block Diagram
12.1. Power Supply Block Diagram
VA11101,L11101 L11102 AC SOCKET P11101 F