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DMR-EX768EB
DMR-EX768EC
DMR-EX768EF
DMR-EX768EP
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ORDER NO.DSD0804019CE
DVD Recorder
Model No.
DMR-EX768EB DMR-EX768EC DMR-EX768EF DMR-EX768EP
Vol. 1
Colour (S).......................Silver Type (K).......................Black Type
© 2008 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
CONTENTS
Page
1 Safety Precaution 1.1. General guidelines 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 3 Service Navigation 3.1. Service Information 3.2. Caution for DivX 4 Specifications 5 Location of Controls and Components 6 Operation Instructions 6.1. Taking out the Disc from DVD-Drive Unit when the Disc cannot be ejected by OPEN/CLOSE button 7 Service Mode 7.1. Self-Diagnosis and Special Mode Setting 8 Service Fixture & Tools 9 Disassembly and Assembly Instructions 9.1. Disassembly Flow Chart 9.2. P.C.B. Positions 9.3. Top case 9.4. Front Panel 9.5. Front (L) P.C.B., Front (R) P.C.B. 9.6. HDD, ATAPI P.C.B. 9.7. RAM/Digital P.C.B. Module 9.8. Rear Panel, Fan Motor 9.9. Power P.C.B. 9.10. HDMI P.C.B. 13 17 17 29 30 30 31 32 32 33 33 35 36 37 37 5 6 7 8 8 8 9 11 13 4 4 5 9.11. Main P.C.B., SW P.C.B. 9.12. BACKEND P.C.B. 10 Measurements and Adjustments 10.1. Service Positions 10.2. Caution for Replacing Parts 11 Block Diagram 11.1. Power Supply Block Diagram 11.2. Analog Video Block Diagram 11.3. Analog Audio Block Diagram 11.4. Timer Block Diagram 11.5. HDMI Block Diagram 12 Schematic Diagram 12.1. Interconnection Schematic Diagram 12.2. Power Supply Schematic Diagram 12.3. Main Net (1/4) Section (Main P.C.B. (1/4)) Schematic Diagram (M) 12.4. Main Net (2/4) Section (Main P.C.B. (1/4)) Schematic Diagram (M) 12.5. Main Net (3/4) Section (Main P.C.B. (1/4)) Schematic Diagram (M) 12.6. Main Net (4/4) Section (Main P.C.B. (1/4)) Schematic Diagram (M) 12.7. AV I/O (1/4) Section (Main P.C.B. (2/4)) Schematic Diagram (AV) 12.8. AV I/O (2/4) Section (Main P.C.B. (2/4)) Schematic Diagram (AV) 12.9. AV I/O (3/4) Section (Main P.C.B. (2/4)) Schematic Diagram (AV) 62 61 60 58 57 56 55
Page
38 38 39 39 43 47 47 49 50 51 52 53 53 54
10.3. Standard Inspection Specifications after Making Repairs 45
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12.10. AV I/O (4/4) Section (Main P.C.B. (2/4)) Schematic Diagram (AV) 12.11. Tuner Section (Main P.C.B. (3/4)) Schematic Diagram (TU) 12.12. Timer (1/4) Section (Main P.C.B. (4/4)) Schematic Diagram (T) 12.13. Timer (2/4) Section (Main P.C.B. (4/4)) Schematic Diagram (T) 12.14. Timer (3/4) Section (Main P.C.B. (4/4)) Schematic Diagram (T) 12.15. Timer (4/4) Section (Main P.C.B. (4/4)) Schematic Diagram (T) 12.16. HDMI Schematic Diagram 12.17. SW Schematic Diagram 70 71 72 69 68 67 65 63
12.18. Front (L) Schematic Diagram 12.19. Front (R) Schematic Diagram 12.20. ATAPI Schematic Diagram 13 Printed Circuit Board 13.1. Power P.C.B. 13.2. Main P.C.B. 13.3. HDMI P.C.B. 13.4. Front (L) P.C.B., Front (R) P.C.B. and SW P.C.B. 13.5. ATAPI P.C.B. 14 Appendix for Schematic Diagram 14.1. Voltage and Waveform Chart 15 Parts and Exploded Views 15.1. Exploded Views 15.2. Replacement Parts List
72 72 73 75 75 76 81 82 83 85 85 93 93 95
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
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. 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 .
1.1.2.
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
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
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 harmless 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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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
2.2.
Precaution of Laser Diode
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
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%
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
3 Service Navigation
3.1. Service Information
3.2.
Caution for DivX
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
4 Specifications
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
5 Location of Controls and Components
Followings are the Location of Controls and Components for DMR-EX768EB as a sample. For other model, refer to each Operation Instructions.
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
6 Operation Instructions
6.1.
6.1.1. 6.1.1.1.
Taking out the Disc from DVD-Drive Unit when the Disc cannot be ejected by OPEN/CLOSE button
Forcible Disc Eject 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.
6.1.1.2.
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.
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
6.1.2.
When the Forcible Disc Eject can not be done.
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
1. Turn off the power and pull out AC cord. 2. Remove the Top Case. 3. Put deck so that bottom can be seen. 4. Remove the sheet of the bottom side.
5. Slide SLIDE CAM by Eject Pin (JZS0484) or minus screw driver (small) in the direction of arrow to eject tray slightly.
6. Put deck upward, and push out Tray by Eject Pin (JZS0484) or minus screw driver (small).
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
7. It is necessary to paste the Sheet again after ejection of the disc. Refer to the illustration of the Step 4 and below figure about the portion of pasting the Sheet.
Note: Use the replacement parts (RMV0337) when the Sheet has not being stickability.
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
7 Service Mode
7.1.
7.1.1.
Self-Diagnosis and Special Mode Setting
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 Abnormal inner temperature Display appears when internal temperature of No display detected deck reaches limit temperature. 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.
"U59 is displayed for 30 minutes.
U61
U71
HDMI incompatible error (HDCP incompatible)
U72
HDMI connection error (communication error)
Display this error when the equipment No display (compatible with DVI such as TV, amplifier etc.) connected to the unit by HDMI is incompatible with HDCP. *HDCP=High-bandwidth Digital Content Protection This error is displayed when there are any communication problems with the unit and the equipments (TV, amplifier etc.) connected to the unit by HDMI. (or when there is a problem with the HDMI cable)
U72 display disappears when error has been solved by Power OFF/ON of connecting equipment or by inserting/removing of HDMI cable.
U73
HDMI connection error (authentication error)
When authentication error occurs while the No display equipments (TV, amplifier etc.) are connected by HDMI. (or when there is a problem with the HDMI cable)
U72 display disappears when error has been solved by Power OFF/ON of connecting equipment or by inserting/removing of HDMI cable.
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
When inoperative fan motor is detected after No display powered on, the power is turned off automatically. The event is saved in memory.
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
Error Code Diagnosis contents F00 No error information
F58 F34
F74
Description Initial setting for error code in memory (Error code Initialization is possible with error code initialization and main unit initialization.) Drive hardware error When drive unit error is detected, the event is saved in memory. Initialization error when main When initialization error is detected after 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. HDIM Device Key HDMI connection could not be authenticated Communication error. due to a transfer malfunction. Factor of HDMI Device key-road failure · When HDMI LSI is damaged. · When the bus line of I2C doesn´t operate normally.
Monitor Display No display
Automatic FL display No display
No display No display
No display No display
No display
F75
· When device key information recorded is damaged. HDIM Device Key Information HDMI connection could not be authenticated No display error due to an internal data malfunction. Factor of HDMI Device key-road failure · When HDMI LSI is damaged. · When the bus line of I2C doesn´t operate normally. · When device key information recorded is damaged. *An unsupported format disc was played, "This disc 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.
UNSUPPO Unsupported disc error RT
is
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
SELF CHECK
Restoration operation
PLEASE WAIT
Unit is in termination process
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.
UNFORM Unformatted disc error AT
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.
No REC
Recording is impossible
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
Error Code Diagnosis contents HDD [HDD ERR] is displayed when ERROR start up of HDD was failed. (Except error of setting of Power on Stand-by)
HDD NG
Power on error
Description Monitor Display 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), tray opens automatically and [HDDERR] is displayed until version up disc is inserted. Stand-by 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.
Automatic FL display
7.1.2.
Special Modes Setting
Item FL display Description *All the main unit´s parameters (include tuner) are initialized. Key operation Front Key Press [STOP], [CH UP] and [OPEN/CLOSE] keys simultaneously for five seconds when power is off. Open the tray, set DRIVE SELECT to DVD, and press [REC] and [PLAY] simultaneously for 5 seconds. When the power is off, press [CH UP], [OPEN/CLOSE] and [REC] keys simultaneously for 5 seconds. execution When the power is off, press [STOP] and [CH UP] keys simultaneously for 5 seconds.
Mode name TEST Mode
Rating password
The audiovisual level setting password is initialized to "Level 8".
Service Mode
Setting every kind of modes for servicing. *Details are described in "7.1.3. Service Mode at a glance". 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. *This command is not effective during "Child lock" is ON. While Demonstration Lock is being set, this Forced disc eject function is not accepted. before
Forced disc eject
Child lock/unlock
Set or release "Child Lock".
Press [ENTER] and [RETURN] by remote controller simultaneously until [X-HOLD] is displayed. The display leaves. before execution While the power is on (E-E mode), press [STOP] and [OPEN/CLOSE] simultaneously for 5 seconds.
NTSC/PAL system select To switch PAL/NTSC altemately.
Forced power-off
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.
Press [Power] key over than 10 seconds.
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
Item Mode name Aging Description Perform sequence of modes as * Aging Description shown below continually.
FL display Display following the then mode.
Key operation Front Key When the power is ON, press [STOP], [POWER] 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):
Demonstration lock/unlock
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 the power is on, press [STOP] and [POWER] keys simultaneously for 5 seconds in the condition that a disc in the tray.
NOTE:
Time difference between pressing [STOP] and [POWER] should be within 0.5 sec. When the power is on, press [STOP] and [POWER] keys simultaneously for 5 seconds while the tray being locked.
*When unlock the tray.
"UNLOCK" seconds.
Time difference between pressing [STOP] and [POWER] should be within 0.5 sec. *When press OPEN/CLOSE key Press [OPEN/CLOSE] key while the while the tray being locked. tray being locked.
is
displayed
for
3
NOTE:
ATP re-execution
Re-execute ATP.
Display "LOCK" for 3 seconds. Display at ATP executing.
When the power is on (E-E mode), press [CH UP] and [CH DOWN] simultaneously for 5 seconds.
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
Item FL display Mode name Description Progressive initialization The progressive setting is initialized to The display before Interlace. leaves.
Key operation Front Key execution When the power is on (E-E mode), press [STOP] and [PLAY] simultaneously for 5 seconds.
7.1.3.
Service Modes at a glance
Item FL display Key operation (Remote controller key) Press [0] [0] or [Return] in service mode. Press [0] [1] in service mode
Service mode setting: While the power is off, press REC, CH UP and OPEN / CLOSE simultaneously for five seconds.
Mode name Release Items Description Item of Service Mode executing is cancelled.
Error Code Display
Last Error Code of U/H/F held by Timer is displayed on FL. *Details are described in "7.1.1. SelfDiagnosis Functions".
If any error history does not exist, [F00] is displayed. ROM Version Display 1. Region code (displayed for 5 sec.) 2. Main firm version (displayed for 5 sec.) 3. Timer firm version (displayed for 5 sec.) 4. Drive firm version (displayed for 5 sec.) 5. ROM correction version (displayed for 5 sec.) Press [0] [2] in service mode
White Picture Output
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.
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
Mode name RTSC Return in XP (A & V)
FL display Key operation Description (Remote controller key) AV1 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.
Item
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. Press [1] [4] in I/P Switch mode. *I/P are switched alternately.
Audio 44.1 kHz/ 48 kHz Switch
I/P Switch
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.
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.
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
Item Mode name Description HDD READ SEEK Inspecting seek time of HSS to inspect At start Inspection performance.
FL display
Key operation (Remote controller key) Press [3] [1] in service mode. * When canceling the inspection mode while executing, do "forced power-off". Method: Press [POWER] key more than 10 seconds.
The [*] sign is added every 20 seconds while inspecting. Two digits on the right side are the progress level of the inspection (The unit is %). Example on the way of inspection:
When HDD is OK after inspection:
(NG is displayed when error is excluding o ) (Transfer rate is calculated from the AV scanning result, and when it is less than 35Mbps, NG is displayed. )
$: [X] is displayed when seek time is over 270msec., there is error or transfer rate is NG. Position at $ is space when excluding those. ##: Number of data of over 100msec. and less than 270msec. When it is over 100, [99] is displayed. When the number is less than 5, we judge it normal.
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
Item Mode name Description HDD READ VERIFY Measure of access time in READ VERIFY At start Inspection MODE of HDD.
FL display
Key operation (Remote controller key) Press [3] [2] in service mode. * When canceling the inspection mode while executing, do "forced power-off". Method: Press [POWER] key more than 10 seconds.
The [*] sign is added every 20 seconds while inspecting. Two digits on the right side are the progress level of the inspection (The unit is %). Example on the way of inspection:
When HDD is OK after inspection:
(NG is displayed when error is excluding o ) (Transfer rate is calculated from the AV scanning result, and when it is less than 35Mbps, NG is displayed. )
$: [X] is displayed when seek time is over 270msec., there is error or transfer rate is NG. Position at $ is space when excluding those. ##: Number of data of over 100msec. and less than 270msec. When it is over 100, [99] is displayed. When the number is less than 5, we judge it normal. HDD Spin-up time The accumulation value of the Spin-up time of HDD is displayed. Spin-up time of HDD is displayed. (The unit of display is hour.) Press [3] [3] in service mode.
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DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
Item Mode name HDD High Speed Scan Description
FL display
Key operation (Remote controller key) Press [3] [6] in service mode.
The [*] sign is added every 10 seconds while inspecting. Two digits on the right side are the progress level of the inspection (The unit is %). Example on the way of inspection:
When HDD is OK after inspection:
When HDD is NG after inspection:
[*] is the number of data of NG. HDD Check Simple quality judgment of HDD Press [3] [7] in service mode.
When HDD is OK:
When HDD is NG:
Laser Used Indication
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-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
Mode name RAM Drive Last Error
FL display 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
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.
In case that the maker cannot be 6. Disc Maker ID is displayed for 5 identified, display is black out. seconds.
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 PB HIGH 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. 8 pin of AV 1 Jack (PB HIGH terminal) is High Press [5] [2] in service mode. (approx. 11V DC). Press [5] [3] in service mode.
PB MIDDLE Output
Signal 8 pin of AV 1 Jack (PB HIGH terminal) is Middle (approx. 5.5V DC)
26
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
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 accumulated 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] ~ [9] [9], the past 99 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) 06: Defect of HDD.
or
Display the time when the error has occurred for 5 seconds.
DD: Day hh: Hour mm: Minute Accumulated occurring of displayed.
working time till the error is left
(Indicating unit: Second) Delete the Error History Delete Error History information stored on the unit. Press [9] [7] in service mode.
27
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
Mode name USB check
FL display Description Display the volume label of the USB memory. When USB memmory connected.
Item
is
Key operation (Remote controller key) not Press [7] [5] in service mode.
When USB check is OK.
* Insert USB memory.
[*] is volume label.
Example of volume label is [PANASONIC] :
When USB check is NG.
AV4(V)/AV1(RGB) Setting AV2(Y/C)/AV1(V) Setting AV2(V)/AV1(Y/C) Setting AV2(RGB)/AV1(V) Setting P50(H) Output
I/O Set input to AV4 (V) and set output to AV1 (RGB) for I/O checking I/O Set input to AV2 (Y/C) and set output to AV1 (V) for I/O checking I/O Set input to AV2 (V) and set output to AV1 (Y/C) for I/O checking I/O Set input to AV2 (RGB) and set output to AV1 (V) for I/O checking Timer Microprocessor IC7501-76 output High When OK. signal for AV1-pin 10 passing through inverter (approx. 0V DC at AV1-pin 10). When NG.
Press [8] [0] in service mode.
Press [8] [1] in service mode.
Press [8] [2] in service mode.
Press [8] [3] in service mode.
Press [8] [4] in service mode.
P50(L) Output
Timer Microprocessor IC7501-76 output Low When OK. signal for AV1-pin 10 passing through inverter (approx. 4.4V DC at AV1-pin 10). When NG.
Press [8] [5] in service mode.
Tray OPEN/CLOSE Test The tray is opened and closed repeatedly.
"*" 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.
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.
28
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
8 Service Fixture & Tools
Part Number RFKZ0260 RFKZ0327 RFKZ0125 RFKZ0168 RFKZ0169 RFKZ0197 RFKZ0367 JZS0484 RFKZ03D01K RFKZ06D01K RFKZ10D01K RFKZ0316 RFKZ0328 Description Extension Cable (MainP.C.B. - RAM/Digital P.C.B. Module/ 88 Pin) Extension Cable (MainP.C.B. - Power P.C.B./ 15 Pin) Extension FFC (HDD - RAM/Digital P.C.B. Module/ 40 Pin) Extension Cable (Main P.C.B. - Fan Motor/ 3 Pin) Extension Cable (MainP.C.B. - HDD / 4 Pin) Extension Cable (MainP.C.B. - HDMI P.C.B. / 8 Pin) Extension Cable (MainP.C.B. - FRONT (R) P.C.B. / 6 Pin) Eject Pin Lead Free Solder (0.3mm/100g Reel) Lead Free Solder (0.6mm/100g Reel) Lead Free Solder (1.0mm/100g Reel)) Solder Remover (Lead free low temperature Solder/50g) Flux Same Same Same Same Same Same Same Same Same Same Same Same Same as as as as as as as as as as as as as Compatibility EH50 Series E55 Series EH55 Series E50/ E55 Series EH55 Series E50/ E55 Series EH75V Series E50 Series EH55 Series EH55 Series EH55 Series EH55 Series EH55 Series
29
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
9 Disassembly and Assembly Instructions
9.1. 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.
30
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
9.2.
P.C.B. Positions
31
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
9.3.
Top case
9.4.1.
How to assemble Tray door ass'y
1. Remove the 2 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.
1. Attach the Tray door spring to Tray door ass'y.
2. Attach Tray door ass'y in order from Insert the shaft in the hole. Insert the shaft in the hole.
to .
9.4.
Front Panel
1. Unlock 6 tabs in (A) - (F) turn. Pull with the front panel in the direction of your side. 3. Confirm the Tray door spring is attached as following.
32
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
9.5.
Front (L) P.C.B., Front (R) P.C.B.
9.6.
HDD, ATAPI P.C.B.
1. Remove the 2 Screws (A) to remove the Front (L) P.C.B. and Front (R) P.C.B.
33
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
1. Remove the 2 Screws (A) and (B), FFC and Wire with connector to remove HDD with ATAPI P.C.B..
CAUTION: When replacing HDD, pay attention as below.
2. Put HDD with HDD angle up and down inversely so as not to give a shock to HDD.
3. Remove 4 Screws (C) to remove HDD from HDD angle.
34
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
9.7.
RAM/Digital P.C.B. Module
1. Remove the 3 Screws (A) and Screw (B) to remove Digital Shield.
3. Put Digital P.C.B. on DVD drive and remove RAM/Digital P.C.B. Module.
2. Lift up Digital P.C.B. slightly so to disconnect connectors to remove Digital P.C.B.. And remove 3 Screws (C) to remove DVD drive.
35
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
Note: RAM/Digital P.C.B. Module as service part has no heat sink and heat transfer sheet. Before returning to customer, heat sink and heat transfer sheet should be installed on Digital P.C.B..
9.8.
9.8.1.
Rear Panel, Fan Motor
Only Fan Motor
1. Remove the 2 Screws (A) and fan connector, remove the Fan motor with pushing 2 tabs in the direction of arrows.
9.8.2.
Rear Panel with Fan Motor
1. Remove 6 Screws (B) and 2 Screws (C).
2. Disconnect the Fan Connector and unlock 2 Tabs (A) to remove Rear Panel.
36
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
9.9.
Power P.C.B.
9.10. HDMI P.C.B.
1. Push the PCB spacer in the direction of arrows and lift up HDMI P.C.B. slightly so to disconnect connector to remove HDMI P.C.B..
1. Remove 3 Screws (A) and disconnect the connector to remove Power P.C.B..
37
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
9.11. Main P.C.B., SW P.C.B.
1. Remove 5 Screws (A). 2. Remove Front angle and Rear angle B. 3. Remove Main P.C.B. and SW P.C.B.
9.12. BACKEND P.C.B.
1. Pull out the BACKEND P.C.B. in the direction of the arrow.
38
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
10 Measurements and Adjustments
10.1. Service Positions
Note: For description of the disassembling procedure, see the section 9.
10.1.1. Checking and Repairing of Power P.C.B.
39
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
10.1.2. Checking and Repairing of RAM / Digital P.C.B. Module
40
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
10.1.3. Checking and Repairing of Main P.C.B.
41
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
10.1.4. Checking and Repairing of HDD
42
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
10.2. Caution for Replacing Parts
10.2.1. Items that should be done after replacing parts
43
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
Note3: Version up please improve in HDD exchange latest firm afterward.
10.2.2. Notice after replacing RAM/Digital P.C.B. Module
Formatting the HDD is unnecessary after After replacing RAM/Digital P.C.B. Module, "TM AV1" is displayed on FL, once power off, and start-up again.
44
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
10.3. Standard Inspection Specifications after Making Repairs
After making repairs, we recommend performing the following inspection, to check normal operation.
No. 1 2 3 4 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. 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. Model with the HDD: Perform auto recording and playback for one No abnormality should be seen in the picture, sound or operation. minute using the HDD. 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 USB Input Jack or DV Input Jack: In case of that the Models with USB Input Jack or DV Input Jack; trouble is caused by USB terminal and/or DV terminal. 1) USB terminal: 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).
5 6 7
8
9
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
45
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
46
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
11 Block Diagram
11.1. Power Supply Block Diagram
POWER P.C.B.
Q1730 (REG.X SW+3.8V) 1 4 T1150 POWER SWITCHING TRANSFORMER S FET G D 2 5 6
X SW+3.8V P1102 P1501 14,15
MAIN P.C.B.
X SW+3.8V
A
IC1730
D1270 1 2 1 Vin (DC/DC CONVERTER)
VA1110,L1120,L1121 AC INLET P1101
D1140,C1143
TIMER +5V
IC7503- 8
F1101
SURGE SUPPRESSOR AND SURGE ABSORBER
RECTIFIER 6 P1 G 7
3
Current 8 Sense FET Gate 7 Drive
3
X SW+3.3V IC7501- 16
Q1502
(X SW+3.3V OUT)
2 V5
GND 6
G
8
IC1150
(SWITCHING IC) Q1600 (REG.X SW+5.8V) 4 P2 1 5 Z/C 1 GND VCC 3 4 2 NS12 11 S FET G D 5 6 7 8 1 Vin Current 8 Sense FET Gate 7 Drive 2 V5 GND 6 4
X SW+5.8V P1102 P1501 1,2,3 B
VIN 7 2 F/B 9
IC1601
(DC/DC CONVERTER)
3
2
B1
1
B2
NS12
12
FROM TIMER SECTION
DI P ON H IC7501- 44
C
D T7501 DISPLAY HEATER POWER SWITCHING TRANSFORMER 2 1 7 D7506 UNREG +38V TO U/V TUNER
IP1501 1 2
IP7501 1
X SW+12V
Q1200 (FEED BACK) 4 1
P1102 P1501 9,10,11,12
IC7401
(REG.PS+11.6V)
1 VIN VOUT 3 H :ON GND 2 5
PS+11.6V
IC3001- 46 ,IC4009- 8 ,IC4012- 8 PWR SAVE H :ON IC7501- 79 FROM TIMER SECTION
3
2 Q1509 (DR+12V OUT) 1 3 2 3 S FET G D 5 6 7 8
DR P ON H IC7501- 42 DR+12V QR7401 ( H :ON)
2 1
E F
IC1200
(ERROR VOLTAGE DET.)
HOT
COLD
4
FROM TIMER SECTION
QR1501 ( H :ON)
DMR-EX768EB/EC/EF/EP Power Supply Block Diagram (1/2)
47
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
MAIN P.C.B.
HDMI P.C.B.
IC56105
(REG.+5V)
XSW+5.8V_AV XSW+5.8V P7402 P59001 52
P7501 2
P56101
1 VIN CONT 3
VO 5
JK56101-18
A
X SW+3.8V
D+3.8V
P7402 P59001 60,62
TO DIGITAL P.C.B.
IC1506
(REG.DR+5V) IC4901- 2 B 2 VIN VOUT 4 GND H :ON 3 1 DR+5V
ANA+5V DR+5V P7402 P59001 76 P7402 P59001 22,24 XSW+3.8V P7501 4 P56101
IC56104
(REG.+3.3V)
1 VIN
VOUT 5 ON H 3
IC56103/IC56107(+3.3V)
IC56106
(REG.+1.2V)
Q1501 (DR+5V OUT)
8 VIN VOUT 1 ON H 5 IC56103(+1.2V)
4
S
FET G
D
1 2 5 6
DR P ON H IC7501- 42 FROM TIMER SECTION
FROM TIMER SECTION FROM TIMER SECTION
HDMI P5 ON H IC7501- 54
P7501 7 P7501 8
P56101
HDMI P3 ON H IC7501- 34
P56101
3
IC4001
(REG.AU+5V)
QR1503 ( H :ON)
IC7404- 8
D+3.3V
P7402
P59001 34 FROM DIGITAL P.C.B. P55003 P56103 16,17 XSW+1.8V
VOUT 5 4 VIN GND H :ON 2 3
AU+5V
AU+5V
P7402
P59001 25
TO/FROM DIGITAL P.C.B.
C
POWER OFF L
P7402 30
P59001
IC7503
(REG.X SW+5V/RESET) VOUT 6 XSW5VOUT 8 7 VIN 5V DETOUT 4 GND RESET 5 1 X SW+5.8V X SW+5V X SW+5V P FAIL L RESET L IC7501- 62 / 90 / 99 IC7701- 3 ,IC7504- 13 , 43 IC7501- 73 IC7501- 12
DR+5V DR+12V
D
P1503 4 P1503 1
TO HDD
IC1502
(REG.+3.3V) +3.3V
P7413 PS90001 6,7 TO BACKEND P.C.B.
IC7402
(REG.BOOSTER+5V)
1 VIN
VOUT 3
IC7303
1 VIN VOUT 5 3 CONT GND 2 TO U/V TUNER BOOSTER+5V IC3001- 42 / 84 / 94 1 VIN VOUT 5 GND CONT 2 3 IC7301- 1 / 5 / 6 / 10 / 13 / 20 / 21 / 28 / 35 (REG.+3.3V)
H :ON GND 2 5
IC7403
(REG.PS+5V)
IC7302
(RESET) PS+5V 1 VIN OUT 4 IC7301- 34
1 VIN VOUT 5 GND CONT 2 3
IC3001- 6 / 8 / 25 / 40
IC1501
(VOLT. DET.) HDD PFAIL L IC7501- 40
IC7304
(REG.+1.5V) 5 VCC VOUT 4 GND GND 2 3
E F
IC1510
(REG.+5V) 4 VIN VOUT 5 GND H :ON 2 3 TU REG.+5V TO U/V TUNER
FOR EC/EF/EP ONLY
4 VIN VOUT 5 GND H :ON 2 3
IC7301- 23 / 30
X SW+12V
TU P ON H IC7501- 43
FROM TIMER SECTION
DR+12V
P7402 P59001 64,66,68,70,72,74 TO DIGITAL P.C.B. P7402 P59001 14,16
DMR-EX768EB/EC/EF/EP Power Supply Block Diagram (2/2)
48
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
11.2. Analog Video Block Diagram
IC3001
(VIDEO PROCESSOR)
:REC SIGNAL
:PB SIGNAL
MAIN P.C.B.
6MHz 12MHz + P59001 P7402 51 FROM DIGITAL P.C.B. P59001 P7402 59 Y OUT DM 93 CLAMP 6MHz LPF (SW1) a b c (SW2) a b c (SW3) a b c d 6MHz P59001 P7402 63 P59001 P7402 67 JK3901 21 PIN JACK AV1 (TV) 20 AV1 VIDEO 33 AV1 V CLAMP GPYOUT DM 97 CLAMP 12MHz (SW4) a b c AV1 R-C OUT 3 PB 9 4 Y COMP B-Y OUT AV1 B OUT (SW6) 6MHz 12MHz (SW5) a b c a b c d COMP Y OUT 1 11 JK3901 21PIN JACK 12 15 7 14 11 19 15 AV1 G OUT RED/C BLUE GREEN VIDEO/Y AV1 (TV) JK3903 COMP R-Y OUT
P59001 P7402 55
C OUT DM
91
BIAS
6MHz BPF
7
2 PR COMPONENT VIDEO OUT PROGRESSIVE/ INTERLACE
RPROUT DM
95
CLAMP/ BIAS
BPBOUT DM
99
CLAMP/ BIAS
17
JK3001 S-VIDEO
(SW17Y) a S-VIDEO IN AV3 JK3003 FRONT JACK 1 2 3 4 3 4 AV3 Y AV3 C 41 AV3 Y CLAMP (SW17C) a b AV3 C (SW17V) a BIAS b b
20 (SW7) a b (SW8) a b (SW9) a b Y OUT Y C OUT
19
3 4
C OUT
22
45
V OUT
23
JK3001 VIDEO OUT 14 OUT 15
AV3 JK3002 FRONT JACK
VIDEO IN
2 1
AV3 V
37
AV3 V
CLAMP
SV1 a b c d e SV2 a b c d e AV2 V OUT AV1 V/Y/C OUT
24
26 JK3901 21PIN JACK 28 19 VIDEO AV2 (DECODER/EXT)
AV1 V AV3 Y AV3 C AV3 V PS90002 P7412 5 FROM BACKEND P.C.B. PS90002 P7412 7 JK3901 21 PIN JACK RED/C 15 AV2 (DECODER/EXT) GREEN 11 BLUE 7 AV2 R/C AV2 G AV2 B AV2 V/Y 5 AV2 B CLAMP 3 AV2 G CLAMP 1 AV2 R/C G DT Y IN A DT Y IN G DT C IN A 47 DT C IN CLAMP DT C DT Y + AV2 R/C AV2 V/Y TUNER V
C-ADC OUT
81
CPN CIN DM V/Y IN DM
P7402 75 P7402 71
P59001 P59001
ADC OUTPUT SELECT SWITCH CIRCUIT
V/Y ADC OUT
83
FOR EC/EF/EP ONLY
P7402 88 P7402 83 P7402 87 P7402 84
P59001 P59001 P59001 P59001
TO DIGITAL P.C.B.
SLICER
85
SLICER Q7501,Q7503- B FROM/TO TIMER SECTION
48
CLAMP SCL BIAS CLAMP (SW10) b a 2.3V 1.0V IIC BUS LOGIC SDA 88 89 IIC CLK IC7501- 29 IIC DATA IC7501- 30 5V
< RGB CPSV >
FOR EB ONLY
FOR EC/EF/EP ONLY
VIDEO/Y 20
TU7801 U/V TUNER CLAMP AV2 V/Y TUNER V 30 17 VIDEO OUT
31
CLAMP
FOR EB ONLY
< RGB CPSV >
DMR-EX768EB/EC/EF/EP Analog Video Block Diagram
49
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
11.3. Analog Audio Block Diagram
:REC SIGNAL :PB SIGNAL
JK3001 REAR JACK D4005 Q4006 MUTE QR4002 (AUDIO MUTE DRIVE) FROM TIMER SECTION XTMUTE IC7501- 65 D4006 Q54401, Q4060 XDMUTE DRIVE Q4007 MUTE Q4009 MUTE Q4008 XDMUTE IC54402- 16 MUTE MIX R OUT2 MIX L OUT2 17 18 20 21 LINE OUT (L) OUT LINE OUT (R)
MAIN P.C.B.
FROM DIGITAL P.C.B.
IC3001
(AUDIO SIGNAL PROCESSOR) (SA1R)
IC4009
(BUFFER) P59001 P7402 41 P59001 P7402 39 MIX R OUT DM MIX L OUT DM 2 6 1 7 56 64 DAC Rch DAC Lch a b c d e OUTPUT SELECT SWITCH (SA4R) a b c d BUFF. LPF MUTE AV1 Rch 72 AUDIO OUT Ch2(R) JK3901 21 PIN JACK 1 AV1 (TV) AUDIO OUT Ch1(L) 3
FROM DIGITAL P.C.B.
AV1 (TV)
JK3901 21 PIN JACK AUDIO IN ch2(R) 2 6 2 6 AUDIO IN ch1(L) AUDIO IN ch2(R) AUDIO IN ch1(L)
(SA3R) 52 60 53 61 AV1 Rch AV1 Lch AV2 Rch AV2 Lch (SA2R) BUFF. a b c d e a b c d e
AGC
ADC Rch AMP
ADC Rch
79
AV2 (DECODER/EXT)
BUFF. LPF MUTE AV2 Rch 74 AUDIO OUT Ch2(R) 1 AV2 (DECEODER/EXT) AUDIO OUT Ch1(L) 3
JK3002 FRONT INPUT JACK 7 6 5 4 3 50 AV3 Rch
LINE (Rch) AV3 (FRONT) AUDIO LINE (Lch/MONO)
58
AV3 Lch
(SA2L) a b c d e OUTPUT SELECT SWITCH (SA4L) a b c d BUFF. LPF MUTE AV2 Lch 73
AADC R
P7402 31
P59001 TO DIGITAL P.C.B. P59001 29
(SA3L)
PS90002 P7412 9 PS90002 P7412 11 G DT IN R A 55 DT R IN
FROM BACKEND P.C.B.
G DT IN L A
63
DT L IN
BUFF.
a b c d e
AGC
ADC Lch AMP
ADC Lch
78
AADC L
P7402
(SA1L) FOR EC/EF/EP ONLY a b c d e BUFF. LPF MUTE AV1 Lch 71
IC7301
(NICAM/A2) TUN Rch SCL SIF OUT 6 18 SIF L OUT 12 62 TUN Lch IIC BUS LOGIC SDA
R OUT 7 TU7801 U/V TUNER
54
88 89
IIC CLK IC7501- 29 IIC DATA IC7501- 30
FROM TIMER SECTION
5V 2.3V 1.0V
IC4901 OPTICAL (DIGITAL AUDIO OUT)
FROM DIGITAL P.C.B.
P59001 P7402 44
IEC OUT
1
DMR-EX768EB/EC/EF/EP Analog Audio Block Diagram
50
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
11.4. Timer Block Diagram
FRONT (R) P.C.B.
IC7701
REMOTE CONTROL RECEIVER VDD GND CTL. 3 2 1
IC7501
(TIMER)
MAIN P.C.B.
POWER SAVE H 61 P SAVE H QR7508 ( H :ON) PP7201 S7201 OPEN/ CLOSE PP7201 3 PP7201 2 QR7507 91 3.3V OFF H P7503 1 P7503 KEY IN1 P7503 IR 3 REMOTE CTL. Q7510 ( L :OFF) X SW+12.4V IP7501 (IC PROTECTOR) 1 2
T7501 DISPLAY HEATER POWER SWITCHING TRANSFORMER D7506 7 QR7402 UNREG.+38V to TU7801- 14 (BTL+30V)
9 1
HEATER+ +B
+38V
86 KEY IN1
3 8 HEATER-
GND -33V
Q7403 ( H :ON) 6 5
TU P ON H IC7501- 43
FOR EC/EF/EP ONLY
DP7501 45 F+ 1 F-
IC7503
(RESET/SW REG.) 5V DET 4 OUT
X SW+5.8V
7 VIN
73 PFAIL L
IC7504
(DISPLAY DRIVE) D7505 X SW+5V 13 VDD 43 VDD 6 DOUT 7 DIN 8 CLK VEE 30 SG1 SG2 SG3 SG4 SG5 SG6 SG7 SG8 SG9 SG10 SG11 SG12 SG13 SG14 SG15 SG16 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 41 40 37 36 34 33 32 30 29 27 26 23 13 11 9 7 P1 P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16
X SW+5V
8 XSW5V RESET 5 OUT
12 XRESET
FL TXD 5 FL CLK 7
BACKEND P.C.B.
PS90001 P7413 1 PS90001 P7413 2 PS90001 P7413 3
28 ST CLK 29 ST RX 30 ST TX 27 DIG CS
FL CS L 45
9 STB 12 VSS
TIMER DISPLAY
FOR EC/EF/EP ONLY
IC7301
(NICAM/A2) IIC CLK 29 IIC DATA 30 IIC CLK IIC DATA 32 SCL 33 SDA
S7506 STOP
S7504 REC
S7501 CH-DOWN KEY IN2 87 KEY IN2
GR1 GR2 GR3 GR4 GR5 GR6
42 41 40 39 38 37
28 25 22 18 15 10
2G 3G 4G 5G 6G 7G
TU7801 U/V TUNER S7507 PLAY S7503 CH-UP KEY IN3 88 KEY IN3 10 SDA
9 SCL
S7701 POWER PP7701 1 P7001 XTMUTE 65 SYNC IN 98 BUFFER Q7503 CVIN1 89 BUFFER Q7501 DR POWER ON H 42 10 XCIN X7502 32.768KHz 11 XCOUT DI POWER ON H 44 TU POWER ON H 43 DR P ON H QR1501- B ,QR1503- B P OFF L IC1506- 1 etc. TU P ON H IC1510- 3
XT MUTE QR4002- B
FRONT(L) P.C.B.
SLICER VIDEO IC3001- 85
TO/FROM ANALOG A/V SECTION
FOR EC/EF/EP ONLY
TO POWER SUPPLY SECTION
TBUS CLK 37 TBUS TXD 35 TBUS RXD 36 13 XOUT X7501 10MHz 15 XIN FAN PWM OUT 22
G SCLK A G SBPTM A G SBMTP A
SCLK P7402- 15 SBPTM P7402- 19 SBMTP P7402- 21
TO/FROM DIGITAL P.C.B.
X SW+12.4V
HDMI P.C.B.
P56101 6 P7501
Q7505 FAN MOTOR DRIVE
Q7511 (FAN MOTOR DRIVE)
Q7509 BUFFER HDMI-MONI 20 CEC INT
FANDCOUT
FAN MOTOR P7502 1 P7502 3
P56101 5
P7501
HDMI-CONT
78 CEC OUT FAN LOCK H 39
M
DMR-EX768EB/EC/EF/EP Timer Block Diagram
51
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
11.5. HDMI Block Diagram
IC56103
(HDMI TRANSMITTER)
VIDEO EE SIGNAL VIDEO PB SIGNAL AUDIO EE SIGNAL AUDIO PB SIGNAL
P55003 P56103 27 P55003 P56103 28 P55003 P56103 29 P55003 P56103 30 P55003 P56103 15 P55003 P56103 14 P55003 P56103 13 P55003 P56103 12
95 D0 94 D1 93 D2 92 D3 90 D4 89 D5 88 D6 87 D7 TX2P 24 L56101 TX2M 22 TX1P 20 L56102 TX1M 18 TX0P 16 L56103 TX0M 14 HDMI CONNECTOR JK56101 D2+ 1 JK56101 D23 JK56101 D1+ 4 JK56101 D16 JK56101 D0+ 7 JK56101 D09 JK56101 CLK+ 10 JK56101 CLK12 JK56101 CEC 13
FROM/TO DIGITAL P.C.B. P55003 P56103 6 P55003 P56103 5 P55003 P56103 4 P55003 P56103 3 P55003 P56103 8 38 AMSDI0 37 AMSDI1 36 AMSDI2 35 AMSDI3
TXCP 12 L56104 TXCM 10
Q56105 SWITCHING
Q56104 43 AMRX
P56101 Q56001,2 BUFFER P56101 6 5
P7501 P7501
HDMI-CONT HDMI-MONI
P55003 P56103 19 P55003 P56103 20
114 HSDA 113 HSCL
SCL 121
SDA 120
Q56103 3V-5V Conv. Q56102 3V-5V Conv.
JK56101 15 JK56101 16
HDMI SCL
HDMI SDA
DMR-EX768EB/EC/EF/EP HDMI Block Diagram
52
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
12 Schematic Diagram
12.1. Interconnection Schematic Diagram
KEY_POWER GND GND GND GND GND
PP7701 1 2 3 4 5 6
P7001 1 2 3 4 5 6
KEY_POWER GND GND GND GND GND
G
JW7001 1 KEY_POWER 2 GND
FRONT (L) P.C.B.
SW P.C.B.
TU7801 U/V TUNER 1 ANT_5V 2 NC P7402 TPA+ 1 TPB+ 2 DGND 3 DGND 4 TPA5 TPB6 DGND 7 DGND 8 DGND 9 DGND 10 DGND 11 DGND 12 XINTP 13 DR12V 14 SCLK 15 DR12V 16 XINTM 17 DRGND 18 SBPTM 19 DRGND 20 SBMTP 21 DR5V 22 XMPREQ 23 DR5V 24 AU5V 25 STM2A 26 XDMUTE 27 STA2M 28 AADC_L 29 DI_P_ON_H 30 AADC_R 31 SBIO 32 AUGND 33 D3R3V 34 AUGND 35 I2C5DT 36 AUGND 37 I2CSCK 38 MIXLOUT_DM 39 SBO0 40 MIXROUT_DM 41 X_SW_3V 42 DGND 43 IECOUT 44 DGND 45 DGND 46 DGND 47 UARTP2M 48 DGND 49 UARTM2P 50 YOUT_DM 51 X_SW_5R8V 52 DGND 53 CSYNC_IN 54 COUT_DM 55 ANA3R3V 56 DGND 57 EPG_ON_H/BUSY 58 RPROUT_DM 59 D3R8V 60 DGND 61 D3R8V 62 GPYOUT_DM 63 X_SW_12V 64 DGND 65 X_SW_12V 66 BPBOUT_DM 67 X_SW_12V 68 DGND 69 X_SW_12V 70 V_YIN_DM 71 X_SW_12V 72 DGND 73 X_SW_12V 74 CPNCIN_DM 75 ANA5V 76 DGND 77 DGND 78 BS_ON 79 XDIAG 80 DGND 81 DGND 82 G_IN 83 RGB_CPSVIN 84 DGND 85 DGND 86 B_IN 87 R_IN 88 P7501 1 2 3 4 5 6 7 8 P59001 TPA+ 1 TPB+ 2 DGND 3 DGND 4 5 TPA6 TPB7 DGND 8 DGND 9 DGND 10 DGND 11 DGND 12 DGND 13 XINTP 14 DR12V 15 SCLK 16 DR12V 17 XINTM 18 DRGND 19 SBPTM 20 DRGND 21 SBMTP 22 DR5V 23 XMPREQ 24 DR5V 25 AU5V 26 STM2A 27 XDMUTE 28 STA2M AADC_L 29 30 DI_P_ON_H AADC_R 31 SBIO 32 33 AUGND D3R3V 34 AUGND 35 36 I2C5DT AUGND 37 38 I2CSCK 39 MIXLOUT_DM SBO0 40 41 MIXROUT_DM X_SW_3V 42 DGND 43 IECOUT 44 DGND 45 DGND 46 DGND 47 UARTP2M 48 DGND 49 UARTM2P 50 YOUT_DM 51 X_SW_5R8V 52 DGND 53 CSYNC_IN 54 COUT_DM 55 ANA3R3V 56 DGND 57 EPG_ON_H/BUSY 58 RPROUT_DM 59 D3R8V 60 DGND 61 D3R8V 62 GPYOUT_DM 63 X_SW_12V 64 DGND 65 X_SW_12V 66 BPBOUT_DM 67 X_SW_12V 68 DGND 69 X_SW_12V 70 V_YIN_DM 71 X_SW_12V 72 DGND 73 X_SW_12V 74 CPNCIN_DM 75 ANA5V 76 DGND 77 DGND 78 BS_ON 79 XDIAG 80 DGND 81 DGND 82 G_IN 83 RGB_CPSVIN 84 DGND 85 DGND 86 B_IN 87 R_IN 88
FC7001 1 KEY_POWER 2 GND
PP7201 IR 1 X_SW_5V 2 KEY_OPEN_CLOSE 3 4 GND 5 6 GND
P7503 1 2 3 4 5 6
3 NC IR X_SW_5V KEY_OPEN_CLOSE GND GND 4 SW 5 TUNER_5V 6 NC 7 SIF_OUT 8 NC
P55003 1 DAC_MCK 2 GND 3 DMIX 4 ADACOUT2 ADACOUT1 5 ADACOUT0 6 DAC_LRCK 7 8 IECOUT GND 9 10 DAC_BCK GND 11 12 R656_OUT7 13 R656_OUT6 14 R656_OUT5 15 R656_OUT4
R656_OUT3 R656_OUT2 R656_OUT1 R656_OUT0 GND HDMI_27CLK GND R656_CLK HDMI_1_IRQ I2C_L1 I2C_SDA1 GND RESET X_SW_1R8V X_SW_1R8V
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
FRONT (R) P.C.B.
F
X_SW5R8V X_SW5R8V X_SW5R8V GND GND GND GND GND X_SW12V X_SW12V X_SW12V X_SW12V X_SW3R8V X_SW3R8V P1101 A N P1102 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 P1501 1 X_SW5R8V 2 X_SW5R8V 3 X_SW5R8V 4 GND 5 GND 6 GND 7 GND 8 GND 9 X_SW12V 10 X_SW12V 11 X_SW12V 12 X_SW12V 13 14 X_SW3R8V 15 X_SW3R8V
9 SCL 10 SDA 11 RF_AGC 12 VIF_5V 13 NC 14 BTL_30V 15 NC 16 AFT.OUT 17 VIDEO_OUT 18 IFD OUT1 19 IFD OUT2 20 IF AGC 21 IF OUT
E
POWER P.C.B.
FAN MOTOR P7502 1 FANOUT 2 FAN_GND 3 FANLOCK P.C.B.Name Main P.C.B.
MAIN P.C.B.
D
HDD (DRIVE)
DR12V DR_GND DR_GND DR5V P9801 3 GND 4 5 DA16 DA07 DA2 8 DA0 9 10 DA1 11 12 INTRQ 13 GND 14 DMACK15 CSEL 16 IORDY 17 GND 18 DIOR19 GND 20 DIOW21 GND 22 DMARQ 23 24 GND 25 DD15 26 DD0 27 DD14 28 DD1 29 DD13 30 DD2 31 DD12 32 DD3 331 DD11 34 DD4 35 DD10 36 DD5 37 DD9 38 DD6 39 DD8 40 DD7 41 GND 42 RESETP9802 1 2 CS13 CS04 5 DA2 6 DA0 7 8 DA1 9 INTRQ 10 11 GND DMACK- 12 13 CSEL IORDY 14 15 GND 16 DIOR17 GND DIOW- 18 19 GND DMARQ 20 21 22 GND 23 DD15 24 DD0 25 DD14 26 DD1 27 DD13 28 DD2 29 DD12 30 DD3 31 DD11 32 DD4 33 DD10 34 DD5 35 DD9 36 DD6 37 DD8 38 DD7 39 GND RESET- 40 GND 1 2 3 4
Circuit Name Main Net AV I/O Tuner Timer
Ref.No. Ref.No.1500,7400 SERIES Ref.No.3000,3900,4000,4900 SERIES Ref.No.7300,7800 SERIES Ref.No.7500 SERIES
P1503 1 2 3 4
DR12V DR_GND DR_GND DR5V
P56103 DAC_MCK 1 2 GND DMIX 3 ADACOUT2 4 ADACOUT1 5 ADACOUT0 6 DAC_LRCK 7 8 IECOUT GND 9 10 DAC_BCK GND 11 12 REC656_OUT7 13 REC656_OUT6 14 REC656_OUT5 15 REC656_OUT4
REC656_OUT3 REC656_OUT2 REC656_OUT1 REC656_OUT0 GND HDMI_27CLK GND REC656_CLK HDMI_1_IRQ I2C_SCL1 I2C_SDA1 GND RESET X_SW_1R8V X_SW_1R8V
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
C
PS90002 IF OUT [+] IF OUT [-] AGND IF AGC DEC C OUT AGND DEC Y OUT AGND DEC AUD R AGND DEC AUD L T CLK T DATA T CS ASC0 RXD ASC0 TXD D3R3V D3R3V GND PS11R6V GND 1 2 3 4 5 6 7 8 9 10 11 PS90001 1 2 3 4 5 6 7 8 9 10
BACKEND P.C.B.
P7412 1 2 3 4 5 6 7 8 9 10 11 P7413 1 2 3 4 5 6 7 8 9 10
IF OUT [+] IF OUT [-] AGND IF AGC DEC C OUT AGND DEC Y OUT AGND DEC AUD R AGND DEC AUD L T CLK T DATA T CS ASC0 RXD ASC0 TXD D3R3V D3R3V GND PS11R6V GND
B
JK56101 (HDMI Connector) 1 D2+ 2 D2GND 3 D24 D1+ D1GND 5 6 D1D0+ 7 D0GND 8 9 D0CLK+ 10 CLKGND 11 CLK12 CEC 13 RSV 14 HDMISCL 15 HDMISDA 16 CECGND 17 +5V 18 HOTPLG 19 FRAME 20 FRAME 21 FRAME 22 FRAME 23 P56101
P58001 1 GND 2 3 CS14 CS0DA2 5 DA0 6 7 DA1 8 9 INTRQ 10 GND 11 DMACK12 CSEL 13 IORDY 14 GND 15 DIOR16 GND 17 DIOW18 GND 19 DMARQ 20 21 GND 22 DD15 23 DD0 24 DD14 25 DD1 26 DD13 27 DD2 28 DD12 29 DD3 30 DD11 31 DD4 32 DD10 33 DD5 34 DD9 35 DD6 36 DD8 37 DD7 38 GND 39 RESET40
P50001 LDD VCC1 1 2 LDD VCC1 LDD VSS 3 LDD VSS 4 5 LDD ENABLE 6 LDD GND2 7 LDD IINRD 8 LDD IINW1 9 LDD IINW2 10 LDD IINW3 11 SC/ROHM 12 LDD W1 13 LDD W1N 14 LDD W2 15 LDD W2N 16 LDD W3 17 LDD WN 18 LDU HFM 19 LDU HFMN 20 LDU CD/DVD 21 OEIC GND 22 OEIC VC 23 FM VOUT24 FM VOUT+ 25 FM/OEIC VCC:5V 26 OEIC D 27 OEIC C 28 OEIC RF+ OEIC RF29 OEIC B 30 OEIC A 31 OEIC EI 32 OEIC FJ 33 OEIC GK 34 OEIC HL 35 OEIC SW2 36 OEIC SW1 37 SMOUT 38 GND 39 ACT FOC240 ACT FOC2+ 41 ACT TRK+ 42 ACT TRK43 ACT FOC1+ 44 ACT FOC145
DVD DRIVE
FP50002 GND GND AA+ B+ B1 2 3 4 5 6
FP50003 HHWHW+ HVHV+ HUHU+ H+ COILU COILV COILW 1 2 3 4 5 6 7 8 9 10 11
FP50004 LM+ LMOPEN_SW PHOTO_LED CARTRIGE REC INH GND CLOSE SW Circuit Name FEP MV4_BE D Net/Audio Ref.No. Ref.No.50000 SERIES Ref.No.53000,54000,55000,56000 57000,58000 SERIES Ref.No.54400,59000 SERIES 1 2 3 4 5 6 7 8
P.C.B.Name Backend P.C.B.
Circuit Name Front End Back End
Ref.No. Ref.No.95000 SERIES Ref.No.90000 SERIES
A
GND X_SW_5R8V GND X_SW_3R8V HDMI CONT HDMI_MONI HDMI_P5_ON_H HDMI_P3_ON_H
DIGITAL P.C.B.
1 2 3 4 5 6 7 8
GND X_SW_5R8V GND X_SW_3R8V HDMI CONT HDMI_MONI HDMI_P5_ON_H HDMI_P3_ON_H
P.C.B.Name Digital P.C.B.
HDMI P.C.B.
DMR-EX768EB/EC/EF/EP
Interconnection Schematic Diagram
ATAPI P.C.B.
1
2
3
4
5
6
7
8
9
10
11
53
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
12.2. Power Supply Schematic Diagram
IC1150
SWITCHING IC IC-DETAIL BLOCK DIAGRAM
IC1601
SWITCHING IC IC-DETAIL BLOCK DIAGRAM
7 VIN
9 DRAIN VCC 4
8 CS LEVEL SHIFT
7 EXT CONTROL LOGIC
6 GND RESET
5 0.8V + FB
G
K1122 $[VWJ0795=10] LG1114 $[LGT=6.2] $[ERDS1TJ474] (470k)[1/2W] ZA1103 EYF52BCY or #K3GE1ZA00010 A C1120 ECQU2A683MLC N F1101 K5D202BK0005 or K5D202BLA013 T2AL 250V SEE THE SERVICE MANUAL 1 LG1109 $[LGS=3.5] 2 ZA1104 EYF52BCY or #K3GE1ZA00010 L1120 G0B233D00001 LG1111 $[LGS=1.5] L1121 G0B233D00001 D1140 B0EDKT000009 (S1WBA80-7062) 4 1 LB1122 VWJ0795=5 LB1125 J0JHC0000048 C1125 ECKWNA102MEV
LATCH RELEASE/ OVER VOLTAGE PROTECTOR/ OVER HEATING PROTECTOR
UVLO + VCC(START) /VCC(STOP)
UVLO + -
START-UP CIRCUIT
VCC(STARTUP OFF) /VCC(STARTUP ON) V5 IDP(LIMIIT/ BURST)SENS. UVLOcomp + VIN 1 VREF 2 V5/PWON
CNT. COMP - +- +
47k[1W] 47k[1W] R1124 R1125 ERG1SJ473E ERG1SJ473E D1142 B0HADV000001
C1129 F1B3A2220009
C1121 ECQU2A223MLC VA1110 #ERZV10D471C2 LG1110 $[LGS=3.5]
T1150 G4D2A0000296 P1 6 G 5 PT 8 G 4 9 P2 D1271 * 7
1 Z/C
ZERO CURRENT DET./ONDEAD TIMER
LG1101 P1101 $[LGT=3.5] K2AA2H000007
1
2
C1143 F2B2W4700003
CONTROL CIRCUIT
SOFT-DRIVE CIRCUIT
VREF/SS 3 4
CC
R1101
STANDBY CIRCUIT
4
3
4
3
3
2
LG1112 $[LGS=1.5] C1126 $[ECKWNA471MBV] C1127 $[ECKWNA471MBV] C1122 ECKWNA471MBV C1123 ECKWNA471MBV K1123 $[VWJ0795=10]
D1141 B0HADV000001
2 FB
ON WIDTH TIMER
ZA1270 VSC5606-A or VSC5606
OCP THRESHOLD COMPARATOR/ BURST MODE OCP THRESHOLD COMPARATOR
RESTERT TIMER
10
NC 2 B1 B2 1 Ns12
LG1106 $[LGT=6.2]
LG1102 $[LGT=6.2]
LG1103 $[LGT=6.2]
LG1104 $[LGT=6.2]
LG1105 $[LGT=6.2]
LG1113 $[LGT=6.2]
LG1107 $[LGT=6.2]
LG1108 $[LGT=6.2]
F
11
D1270 * or
Ns12 12
GND 3
SOURCE /OCL 5
R1122
ERG1SJ222E 2200[1W]
1 LB1123 VWJ0795=5 R1153 68[22] LB1124 $[J0JHC0000048] C1124 $[ECKWNA102MEV] LB1270 VWJ0795=5 LB1128 $[J0JHC0000048] C1128 $[ECKWNA102MEV]
2
3
ZA1271 XYN3+J8FJ
C1414 $[F1J0J106A014] 10[22]
R1159 ERDS2TJ471T
R1150 68[22] C1150 F2A1V6800002 or EEUFM1V680B
D1151 B0HAGM000006
C1272 F2A1C5610006 16V560[JG]
LB1126 ERJ6GEY0R00V [22]
L1270 G0A100K00003 or G0A100H00025 C1270 * C1271 *
C1415 $[F1K1C106A062] 10[36] K1731 *
ZA1152 VSC5603-A VSC5603 ZA1153 XYN3+J8FJ
ZA1150 $[VSC5839-A] VSC5839 ZA1151 $[XYN3+J8FJ] 1
2
4 IC1150 *
7
TO P1501 MAIN P.C.B. (MAIN NET (1/4)SECTION) P1102 K1KB15AA0032 1 X_SW5R8V 2 X_SW5R8V X_SW5R8V 3 4 GND 5 GND 6 GND 7 GND 8 GND 9 X_SW12V 10 X_SW12V 11 X_SW12V 12 X_SW12V P_ON_H 13 14 X_SW3R8V X_SW3R8V 15
35V68[JG]
E
3
5
9
D1158 MAZ4160NMF
R1151 R1152 10K[22]
2200[22] D1152 MAZ4100NLF R1800 $(470)[22]
C1422 $[F1J0J106A014] 10[22] P1103 $[K1KA04AA0180] X_SW5R8V GND GND X_SW3R8V
C1151 F1B3D101A011 100P[2KV]
D1156 MA2C165001VT R1157 820 [G][22] R1154 10K [G][22]
D1800 $[MA2J11100L] R1803 $(10K)[22] Q1601 * (CPH6312) QR1801 $[UNR221300L] K1701 *
1 2 3 4
100P[22]
C1154 ECJGVB1H102K 1000P[22]
$[F2A1E4700048]
QR1800 $[UNR211300L]
D1157 B0HADV000001 R1158 ERX2SJR27E 0.27[2W] D1155 MAZ73000BC
C1153 ECJGVB1H222K 2200P[22]
R1155 470[G][22]
R1209 1K 1 2 C1202 $(0.1)
R1208 2200
4 R1156 22K[G][22] 3
R1801
$(100K)[22]
C1152
C1800
25V47[JF]
Q1200 B3PBA0000454 or B3PBA0000237 or B3PBA0000402
1
1 R1802 $(4700)[22]
R1200 1200[F]
D
R1207 10K
1
HOT
COLD
C1201 ECJ2VB1E473K 0.047[22]
C A R
D G
D S
2
3
1
3
2
R1201 8200[F]
D1703 *
ZA1105 K9ZZ00001279 ZA1106 K9ZZ00001279 ZA1107 K9ZZ00001279 Q1730 *
21
L1700 *
C
C1739
B
R1733
C1270 C1271 C1731 C1732 C1733 C1734 C1735 C1736 C1737 C1738 C1739 D1270 D1271 D1602 D1701 D1702 D1703 D1704 D1705 D1706 D1731 IC1150 IC1730 K1600 K1701 K1731 L1700 L1731 LB1730 Q1600 Q1601 Q1730 R1731 R1732 R1733 R1734 R1735 ZA1270 ZA1271
A F2A1C1820005 F2A1C1820005 $[F2A1E2210067] $(0.1) $(0.1) $(0.1) $(27P) $[ECJGVB1H103K] $[F2A1A6810022] $(0.1) $[F1K1C106A062] B0JBSG000048 $[B0JAQG000005] B0JCPD000021 MA22D3900L MA22D3900L MA22D3900L $[MA22D3900L] $[MA22D3900L] $[MA22D3900L] $[B0JCPD000021] C0DACZH00017 $[C0DBAZZ00132] $[ERJ6GEY0R00V] VWJ0795=10 $[VWJ0795=7.5] $[G0A100HA0023] $[G0A100K00003] $[J0JHC0000048] B1DHED000008 $[B1DHDD000022] $[B1DHDD000022] $[D1BFR0240001] $(33K) $[ERJ6GEY0R00V] $[ERJ6RBD123V] $[ERJ6RBD562V] VSC5606-A XYN3+J8FJ
B F2A1C1820005 F2A1C1820005 F2A1E2210067 0.1 0.1 0.1 27P ECJGVB1H103K F2A1A6810022 0.1 F1K1C106A062 B0JBSG000048 $[B0JAQG000005] B0JCPD000021 $[MA22D3900L] $[MA22D3900L] $[MA22D3900L] $[MA22D3900L] $[MA22D3900L] $[MA22D3900L] B0JCPD000021 C0DACZH00017 C0DBAZZ00132 $[ERJ6GEY0R00V] $[VWJ0795=10] VWJ0795=7.5 G0A100HA0023 G0A100K00003 J0JHC0000048 B1DHED000008 $[B1DHDD000022] B1DHDD000022 D1BFR0240001 33K ERJ6GEY0R00V ERJ6RBD123V ERJ6RBD562V VSC5606-A XYN3+J8FJ
Z F2A1C1820005 F2A1C1820005 F2A1E2210067 0.1 0.1 0.1 27P ECJGVB1H103K F2A1A6810022 0.1 F1K1C106A062 B0JBSG000048 B0JAQG000005 B0JCPD000021 MA22D3900L MA22D3900L MA22D3900L MA22D3900L MA22D3900L MA22D3900L B0JCPD000021 C0DACZH00017 C0DBAZZ00132 ERJ6GEY0R00V VWJ0795=10 VWJ0795=7.5 G0A100HA0023 G0A100K00003 J0JHC0000048 B1DHED000008 B1DHDD000022 B1DHDD000022 D1BFR0240001 33K ERJ6GEY0R00V ERJ6RBD123V ERJ6RBD562V VSC5606-A XYN3+J8FJ
C F2A1C1520021 F2A1C1520021 $[F2A1E2210067] $(0.1) $(0.1) $(0.1) $(27P) $[ECJGVB1H103K] $[F2A1A6810022] $(0.1) $[F1K1C106A062] $[B0JBSG000048] B0JAQG000005 $[B0JCPD000021] MA22D3900L MA22D3900L MA22D3900L $[MA22D3900L] $[MA22D3900L] $[MA22D3900L] $[B0JCPD000021] C0DACZH00017 $[C0DBAZZ00132] ERJ6GEY0R00V VWJ0795=10 $[VWJ0795=7.5] $[G0A100HA0023] $[G0A100K00003] $[J0JHC0000048] $[B1DHED000008] B1DHDD000022 $[B1DHDD000022] $[D1BFR0240001] $(33K) $[ERJ6GEY0R00V] $[ERJ6RBD123V] $[ERJ6RBD562V] $[VSC5606-A] $[XYN3+J8FJ]
R1205 220K
R1206 2400[F]
or
IC1200 C0DAEMZ00001 C0DAEYY00021
Q1600 * (UPA1717G-E1-A) D1702 * D1705 * D1704 *
S S S G
D D D D
1
2
7
8
G0A100HA0023 L1600
3
4
3
C1609 $[F1K1C106A062]
3
21
3
R1601 D1BFR0240001 24M[36] [22]
21
5
6
L1601 G0A100K00003
D G
D S
F2A1E2210067 25V220[JG]
1
2 3 4
DMR-EX78,EX88,EX768 JISSOU DMR-ES18
B Z C
R1731 * 24M[36]
L1731 *
C1601 C1602 C1603 C1604
DMR-EH58,EH585 DMR-EH68,EH685
A
D1602 *
D1601 B0JCPD000021
VIN V5 VREF CC
CS EXT GND FB
1
8
* *
LB1730 *
1 2
2
R1734
*
C1737 *
C1735 * 3
7
1
6
C1738
C1736
R1735
A
* C1731
R1732 * IC1730 * (AL1014) * *
NOTE:PARTS INDICATED WITH "$" MARK ARE NOT MOUNTED. NOTE:DO NOT USE THE PART NUMBER SHOWN ON THIS DRAWING FOR ORDERRING. THE CORRECT PART NUMBER IS SHOWN IN THE PARTS LIST,AND MAY BE SLIGHTLYDIFFERNT OR AMENDED SINCE THIS DRAWING WAS PREPARED.
IMPORTANT SAFETY NOTICE: COMPONENTS IDENTIFIED WITH THE MARK HAVE THE SPECIAL CHARACTERISTICS FOR SAFETY. WHEN REPLACING ANY OF THESE COMPONENTS.ONLY THE SAME TYPE.
4
* *
C1732 C1733 C1734
*
5
R1605 2700[D][22]
Variation
Type
IC1601 C0DBAZZ00132 (AL1014)
C1606 ECJGVB1H103K 0.01[22]
Modify Category
0.1 0.1 0.1
CC
FB
4
R1602 51K
*
5
D1731
DMR-EX768EB/EC/EF/EP Power Supply Schematic Diagram
1
2
3
4
5
6
7
8
9
10
C1608
VREF
GND
R1604 9100[D][22]
K1129 VWJ0795=5
C1605 180P 3
C1607 F2A1A6810022 10V680[JG]
V5
EXT
2
2
5
3
4
6
7
0.1
D
D
LB1600 J0JHC0000048
VIN
CS
1
6
R1603 560[D][22]
1
8
D1701 *
D1706 *
VariationCategory
K1600
*
4
5
6
R1210 1K
C1200 0.1
D
D
11
54
DMR-EX768EB / DMR-EX768EC / DMR-EX768EF / DMR-EX768EP
12.3. Main Net (1/4) Section (Main P.C.B. (1/4)) Schematic Diagram (M)
A
VariationCategory
V