Text preview for : 60139.pdf part of JVC GY-DV300 DV CAMCORDER
Back to : JVC GY-DV300 14parts !.pa | Home
SERVICE MANUAL
DV CAMCORDER
GY-DV300U/UZ/E
The photo shows the GY-DV300 DV camcorder with an optional KA-DV300 network pack.
Differences between GY-DV300U and GY-DV300UZ are packed accessories. For more details, refer to the "SECTION 7 PACKING" on page 7-1.
100% recycled paper
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.
No. 60139 March 2002
Important Safety Precautions
Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.
Precautions during Servicing
1. Locations requiring special caution are denoted by labels and inscriptions on the cabinet, chassis and certain parts of the product. When performing service, be sure to read and comply with these and other cautionary notices appearing in the operation and service manuals. 2. Parts identified by the symbol and shaded ( ) parts are critical for safety. Replace only with specified part numbers. Note: Parts in this category also include those specified to comply with X-ray emission standards for products using cathode ray tubes and those specified for compliance with various regulations regarding spurious radiation emission. 3. Fuse replacement caution notice. Caution for continued protection against fire hazard. Replace only with same type and rated fuse(s) as specified. 4. Use specified internal wiring. Note especially: 1) Wires covered with PVC tubing 2) Double insulated wires 3) High voltage leads 5. Use specified insulating materials for hazardous live parts. Note especially: 1) Insulation Tape 3) Spacers 5) Barrier 2) PVC tubing 4) Insulation sheets for transistors 6. When replacing AC primary side components (transformers, power cords, noise blocking capacitors, etc.) wrap ends of wires securely about the terminals before soldering. Fig.4 (3) Align the lengths of the wires to be connected. Insert the wires fully into the connector. Fig.1 7. Observe that wires do not contact heat producing parts (heatsinks, oxide metal film resistors, fusible resistors, etc.) 8. Check that replaced wires do not contact sharp edged or pointed parts. 9. When a power cord has been replaced, check that 10-15 kg of force in any direction will not loosen it. 12. Crimp type wire connector In such cases as when replacing the power transformer in sets where the connections between the power cord and power transformer primary lead wires are performed using crimp type connectors, if replacing the connectors is unavoidable, in order to prevent safety hazards, perform carefully and precisely according to the following steps. 1) Connector part number : E03830-001 2) Required tool : Connector crimping tool of the proper type which will not damage insulated parts. 3) Replacement procedure (1) Remove the old connector by cutting the wires at a point close to the connector. Important : Do not reuse a connector (discard it).
cut close to connector
Fig.3 (2) Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors.
15 mm
Metal sleeve
Connector
Fig.5 (4) As shown in Fig.6, use the crimping tool to crimp the metal sleeve at the center position. Be sure to crimp fully to the complete closure of the tool.
Power cord
1.2 5 2.0 5.5
Crimping tool
Fig.2 10. Also check areas surrounding repaired locations. 11. Products using cathode ray tubes (CRTs) In regard to such products, the cathode ray tubes themselves, the high voltage circuits, and related circuits are specified for compliance with recognized codes pertaining to X-ray emission. Consequently, when servicing these products, replace the cathode ray tubes and other parts with only the specified parts. Under no circumstances attempt to modify these circuits. Unauthorized modification can increase the high voltage value and cause X-ray emission from the cathode ray tube.
Fig.6 (5) Check the four points noted in Fig.7.
Not easily pulled free Crimped at approx. center of metal sleeve
Conductors extended Wire insulation recessed more than 4 mm
Fig.7
1
Safety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions, Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards. 1. Insulation resistance test Confirm the specified insulation resistance or greater between power cord plug prongs and externally exposed parts of the set (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.). See table 1 below. 2. Dielectric strength test Confirm specified dielectric strength or greater between power cord plug prongs and exposed accessible parts of the set (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.). See table 1 below. 3. Clearance distance When replacing primary circuit components, confirm specified clearance distance (d), (d') between soldered terminals, and between terminals and surrounding metallic parts. See table 1 below. Chassis Fig. 8 4. Leakage current test Confirm specified or lower leakage current between earth ground/power cord plug prongs and externally exposed accessible parts (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.). Measuring Method : (Power ON) Insert load Z between earth ground/power cord plug prongs and externally exposed accessible parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and following table 2.
d d'
Power cord, primary wire
a
b c
Externally exposed accessible part
Z V
A
Fig. 9 5. Grounding (Class 1 model only) Confirm specified or lower grounding impedance between earth pin in AC inlet and externally exposed accessible parts (Video in, Video out, Audio in, Audio out or Fixing screw etc.). Measuring Method: Connect milli ohm meter between earth pin in AC inlet and exposed accessible parts. See figure 10 and grounding specifications.
AC inlet
Exposed accessible part
Grounding Specifications Region USA & Canada Europe & Australia Grounding Impedance (Z) Z 0.1 ohm Z 0.5 ohm
Earth pin Milli ohm meter
Fig. 10
AC Line Voltage 100 V 100 to 240 V 110 to 130 V 110 to 130 V 200 to 240 V
Region Japan USA & Canada Europe & Australia
Insulation Resistance (R) R 1 M/500 V DC R 10 M/500 V DC
Dielectric Strength AC 1 kV 1 minute AC 1.5 kV 1 miute AC 900 V 1 minute AC 3 kV 1 minute (Class 2) AC 1.5 kV 1 minute (Class 1)
Clearance Distance (d), (d') d, d' 3 mm d, d' 4 mm d, d' 3.2 mm d 4 mm d' 8 mm (Power cord) d' 6 mm (Primary wire)
Table 1 Specifications for each region
AC Line Voltage 100 V 110 to 130 V 110 to 130 V 220 to 240 V Region Japan USA & Canada
0.15 µF 1.5 k 2 k 50 k
Load Z
1 k
Leakage Current (i) i 1 mA rms i 0.5 mA rms i 0.7 mA peak i 2 mA dc i 0.7 mA peak i 2 mA dc
a, b, c Exposed accessible parts Exposed accessible parts Antenna earth terminals Other terminals
Europe & Australia
Table 2 Leakage current specifications for each region Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
2
SECTION 1 SERVICE CAUTIONS AND DISASSEMBLY
1.1 REMOVAL OF THE EXTERNAL COVER 1.1.2 Removing the right side cover (1) Remove the two screws 4 from the right side. 1.1.1 Removing the left side cover (1) Slide the EJECT switch in the direction of the arrow and open the cassette cover in the direction shown. (2) Remove the two screws 1. (3) Remove the two screws 2. Eject Switch
4
Fig. 1-1-4 (2) Remove the three screws 5 from the bottom panel and remove the right side cover.
1 2
Fig. 1-1-1 (4) Remove the three screws remove the left side cover.
5
3 from the bottom panel and
3
Fig. 1-1-5 (3) Be careful with the internal wires and FFCs when removing the right side cover.
Fig. 1-1-2 (5) Be careful with the connection wires when removing the left side cover.
Fig. 1-1-6
[Cautions for attaching the right side cover] Make sure that the ND FILTER on the cover is OFF and that the lever on the lens assembly is in the up position before closing the right hand side cover. Fig. 1-1-3
1-1
1.1.3 Removing the handle assembly (1) Remove the left and right side covers as described in "1.1.1 Removing the left side cover" and "1.1.2 Removing the right side cover." (2) Remove the screw 6, which can be found when the right side cover is removed.
1.1.4 Removing the rear panel (1) Remove the left and right side covers as described in "1.1.1 Removing the left side cover" and "1.1.2 Removing the right side cover." (2) Remove the two screws 8 retaining the bottom panel from the rear panel.
6
Fig. 1-1-7 (3) The handle assembly can be removed after removing the screw 7, which is revealed when the left side cover is removed.
8
Fig. 1-1-10 (3) After removing the two screws 9 at the top of the rear panel, the rear panel can be removed.
7
Fig. 1-1-8 (4) Be careful with the FFCs and wires between the main unit and the handle assembly when removing the handle assembly. Fig. 1-1-11
9
Fig. 1-1-9
1-2
(4) Removing the rear panel exposes the REG. board.
1.2
BOARD LAYOUT
Caution Take measures against static when handling the circuit board. The ICs mounted on the circuit board (especially the IC402, which is the CPU on the main circuit board) may be damaged by static.
MAIN board
F2 (Part No. NMFZ0113R15X-S) F1 (Part No. NMFZ0113R15X-S)
A/L/S board Fig. 1-2-1
Location of Fuse
Fig. 1-1-12
MECHANISM assembly CONNECT board DV MDA board
1.1.5 Replacing the fuses · Before replacing the fuse, determine the cause of the fuse blowout in order that such a problem may be avoided in future. · In order to ensure safe operation and protection for the machine, please replace the fuse with one that has the correct parts number. (1) Before replacing the fuse, please remore the power cable or battery for the camera. (2) Remove the panel in accordance with the instructions in "1.1.4 Removing the rear panel." Then, replace the fuse (solder type). Fig. 1-2-2
REG. board Fig. 1-2-3
1-3
1.3
REMOVAL OF THE LENS AND OPTICAL COMPONENTS
1.3.1 Removing the lens hood (1) In order to remove the lens hood on the front of the main unit; first remove the four screws 0 inside the lens hood.
(3) Remove the right side cover as described in "1.1.2 Removing the right side cover." (4) Remove the two screws @ and the manual iris control dial assembly.
@
0 0
Manual iris dial Fig. 1-3-4 (5) Disconnect both the FPC connector (CN901) and the board connector (CN501), and then remove the four screws # retaining the lens assembly. Now the lens assembly (integrated with the CCD block assembly) can be removed. CN901 CN501
Fig. 1-3-1 (2) Remove the retaining screw ! on the manual focus sensor and remove the manual focus ring.
!
#
Fig. 1-3-5 Manual focus ring Fig. 1-3-2 (6) Do not to apply excessive force on the FPC, etc. when removing the lens assembly from the main unit.
Fig. 1-3-6 View after removal of manual focus ring Fig. 1-3-3
1-4
(7) After removing the three screws $ from the CCD block assembly on the rear part of the lens assembly, the CCD block assembly can be removed from the lens.
1.4
DISASSEMBLY OF MICROPHONE ASSEMBLY
(1) Remove the handle as described in "1.1.4 Removing the handle assembly." (2) Remove the screw % . (3) Remove the screw ^ and then remove the spring of the accessory shoe.
^
Spring
$
%
Fig. 1-4-1 Fig. 1-3-7 (8) When re-assembling them, make sure that dust does not attach on the inner side of the lens and the front of the CCD block. If required, clean them using a blower before re-assembly. Lens assembly (4) Remove the two screws & then remove the plate and tally lens.
Plate
&
Tally lens
IS board assembly Fig. 1-4-2 (5) Remove the MIC assembly from the handle being careful of the internal wires.
CCD block assembly Fig. 1-3-8 (9) The lens assembly and CCD block assembly of this model is supplied as an integrated part. Lens assembly (with CCD) : SCV3055-021 (U MODEL) SCV3055-031 (E MODEL) Lens assembly : T.B.A CCD block assembly : T.B.A The CCD block assembly is not equipped with the IS board assembly. This assembly should be reused by removing it from the original set. Caution · The CCD assembly of this set has been assembled based on a special bonding technique. Therefore, the CCD cannot be disassembled or exchanged alone. In case of a malfunction of the CCD, it is required to exchange the entire CCD block assembly. · Repair of CCD block assembly is impossible.
Fig. 1-4-3
1-5
1.5
REMOVAL OF THE VIEWFINDER
1.6
REMOVAL OF THE LCD MONITOR
(1) Pull up the viewfinder and remove the two screws * from the stay.
(1) Remove the right side cover as described in "1.1.2 Removing the right side cover. (2) Remove the two screws ( which are inside the right side cover.
*
(
Fig. 1-5-1 (2) Remove the eyepiece and rubber ring, and then remove the VF cover. Fig. 1-6-1 (3) Open the LCD monitor and turn the screen so that it faces downward. (4) Remove the two screws ) and then remove the cover.
VF cover
Eyepiece
)
Rubber ring
Fig. 1-5-2
Cover
Fig. 1-6-2 (5) With the LCD screen facing downward, remove it by sliding it toward the inner side of the right side cover as shown in the figure.
View after removal of the VF cover Fig. 1-5-3
Fig. 1-6-3
1-6
1.7
REMOVAL OF THE MECHANISM ASSEMBLY
(1) Remove both the left side and right side covers from the main unit. (See "1.1.1 Removing the left side cover" and "1.1.2 Removing the right side cover.") (2) Remove the four screws / and remove the A/L/S board.
A/L/S board
(5) Disconnect the wires from CN5508, CN5501 and CN5506 of the DV MDA board, and then remove the mechanism assembly. DV MDA board
Screws /
Fig. 1-7-1 (3) Remove the screw and remove the shield plate on the MAIN board. Disconnect the two FPC wires of the mechanism assembly from CN1 and CN3.
MAIN board FPC wire CN3
Fig. 1-7-4 (6) In order to remove the DV MDA board, remove the two screws <, disconnect the FPC wires from the capstan and drum assembly, and take out the DV MDA board. DV MDA board
Screws <
Shield plate FPC wire CN1
Fig. 1-7-5
Fig. 1-7-2 (4) Remove the DEW sensor. Remove the three screws ¤ retaining the mechanism assembly. Screws ¤
Fig. 1-7-6 For instructions on the disassembly and assembly of individual parts, see "Section 2 Mechanical Adjustments." The mechanism assembly for the service part is provided as shown in figure 1-7-5. (It consists of the mechanism assembly and the DV MDA board.) 1-7
DEW sensor
Fig. 1-7-3
1.8
HOW TO TAKE OUT THE CASSETTE TAPE IN AN EMERGENCY
1.9
SERVICE MENUS
1.9.1 Modes required in servicing (1) Characters are displayed on the LCD monitor screen or viewfinder.
When the cassette tape cannot be ejected due to a failure in the electrical circuitry, take out the cassette manually as described below. Note that the following method is not applicable if the mechanism itself is fractured and becomes stuck as a result of this. (1) Remove the left side cover from the main body. (See "1.1.1 Removing the left side cover".) (2) Apply 3 V DC to the terminals on the top of the loading motor (Red wire: +. Brown wire: -) to perform the unloading operation little by little. Perform the unloading operation little by little for the tape may be slackened or damaged if unloading is attempted all at once.
PLAY STOP
POWER
Brown wire()
Red wire(+)
LCD monitor MENU SELECT dial
Fig. 1-9-1 Buttons Used (2) While holding down the specified button(s) (PLAY, STOP), press and hold the MENU button for more than 1 second in order to display the first-level menu of the service menu hierarchy. The items in the first-level menu vary according to which specified button is being held at the moment the MENU button is pressed.
Active Function PLAY + STOP PLAY STOP
Fig. 1-8-1 (3) If there is any tape slack, wind the tape up by inserting a pointed tool (such as a chip IC replacement tool) into the shaft above the capstan motor and turning it in the direction of the arrow. (4) Repeat the operations in steps (2) and (3) until the tape is wound up completely inside the cassette. Take care not to damage the tape during the operation. (5) Ensure that the tape has been wound up completely, push down the release lever of the cassette housing and take out the cassette.
Item CAMERA 1 MENU CAMERA 2 MENU CAMERA 2 MENU VTR 1 MENU VTR 2 MENU VTR 3 MENU DIP SW HOUR METER
Main Display Camera setting, white blemish detection
White blemish correction ON/OFF Menu for factory use. Do not change the settings.
VCR setting. Reserve ON/OFF. Reserve ON/OFF. DIP SW ON/OFF. Hour meter display. ERROR HISTORY Warning history display. OTHERS Menu save, etc. CPU VERSION CPU version display.
Table 1-9-1 First-Level Menus of Service Menus
Release lever Fig. 1-8-2 1-8
1.9.2 Operation in the first-level of the service menu (1) While holding down the specified button(s) (PLAY, STOP), press and hold the MENU button for more than 1 second. (2) The first-level of the service menu is displayed. (3) Rotate the SELECT dial to move the cursor (') on to the item to be modified. (4) Push the SELECT dial to select the item on which the cursor (') is located. * Pressing the MENU button returns to the status display.
ME NU C AME R A 1 VTR1 EX I T C P U V E R S I ON CAN SYS L ENS VTR ME NU C AME R A 1 C AME R A 2 VTR1 VTR2 D I P SW HOUR ME T E R E RROR H I S T OR Y OTHERS EX I T
(2) Rotate the SELECT dial to move the cursor (') on the mode to be modified. (3) Push the SELECT dial so that the parameter blinks. (4) Rotate the SELECT dial to vary the parameter. (5) After completing the parameter setting, push the SELECT dial to stop the blinking of the parameter and store the setting in memory. (6) After completing the setting, move the cursor (') to "PAGE BACK" and push the SELECT dial to return to the display at the higher hierarchy level. * Pressing the MENU button returns to the status display.
Item WHITE CLIP LCD L/R REVERSE Parameters 108% Sets the WHITE CLIP level to 108%. 100% Sets the WHITE CLIP level to 100%. OFF
: : : :
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
Fig. 1-9-2 First-Level MENU (When both STOP and Menu are pressed)
Fig. 1-9-3 First-Level MENU (When both PLAY and Menu are pressed)
ME NU C AME R A 1 C AME R A 2 C AME R A 3 VTR1 VTR2 VTR3 D I P SW HOUR ME T E R E RROR H I S T OR Y OTHERS EX I T
Fig. 1-9-4 First-Level MENU (When both STOP, PLAY and Menu are pressed)
When the face of LCD screen is turned toward the camera subject, does not invert the left and right of the LCD display. (normal image) ON When the face of LCD screen is turned toward the camera subject, inverts the left and right of the LCD display. (mirror image) OFF Always displays image in the VF. VF OR LCD (Mode for displaying image in the LCD panel only when it is opened.) ON Displays image in either VF or LCD. (Mode for turning the VF display off when the LCD panel is opened) HANDLE ZOOM OFF Disables the zooming of the handle. ON Enables the zooming of the handle. ERROR DETECT CANCEL White blemish detection to cancel. EXECUTE Pressing the SECECT dial after selecting this item starts white blemish detection. ( indicates the factory settings.)
Table 1-9-2 Setting Items in CAMERA 1 Menu White blemish detection · Select item "ERROR DETECT" and push the SELECT dial. "ERROR DETECT" is displayed and the CCD white blemish detection operation for correction starts automatically. At this time, the lens is closed and the camera is in the LoLux mode.
C AME R A 1 WH I T E C L I P 1 0 8% L CD L / R R E V E R S E ON V F OR L CD OF F H A N D L E Z O OM ON E RROR D E T E C T E X ECU T E P AGE B ACK
1.9.3 CAMERA 1 menu (1) In a service menu, place the cursor (') on "CAMERA 1" and push the SELECT dial to display the CAMERA 1 menu.
C AME R A 1 WH I T E C L I P L CD L / R REVERSE V F OR L CD H A N D L E Z O OM E RROR D E T E C T P AGE B ACK 1 0 8% ON OF F ON CANCE L
Fig. 1-9-5 CAMERA 1 Menu
Fig. 1-9-6 White Blemish Detection
1-9
· When the white blemish detection completes, the result data is stored in the memory of the CPU, "ERROR DETECT END, PLEASE POWER OFF" is displayed. Turn the POWER switch OFF, and turn it ON again to return to the status display.
Details on correctable white blemish · Up to 32 errors with composite video levels of 50 mV or more can be corrected. However, the maximum number of errors per line is limited to 16. (However, if two errors are adjacent to each other, the correction results are inferior to the case in which a single error due to the principles of error correction occurs.) · Oblique noise may be observed on the screen during white blemish detection. This is due to the principles of error correction and is not a malfunction.
E RROR
DETECT
E RROR
DETECT END
PLEASE
P OW E R
OF F
Fig. 1-9-7 Display During white Blemish Detection
Fig. 1-9-8 Display After White Blemish Detection
1.9.4 CAMERA 2 menu (1) In a service menu, place the cursor on "CAMERA 2" and push the SELECT dial to display the CAMERA 2 menu.
C AME R A 2 COUN T R Y CCD CORR E C T P AGE B ACK U / E ON
· If any error occurs during the detection operation, an error message is displayed, and the CAMERA 1 menu appears again in a while.
E RROR
DETECT
E RROR : ( ME S S AGE )
Fig. 1-9-11 CAMERA 2 Menu (2) Rotate the SELECT dial to move the cursor (') onto the mode to be modified. (3) Push the SELECT dial so that the parameter blinks. (4) Rotate the SELECT dial to vary the parameter. (5) After completing the parameter setting, push the SELECT dial to stop the blinking of the parameter and store the setting in memory. (6) After completing the setting, move the cursor (') to "PAGE BACK" and push the SELECT dial to return to the display at the higher hierarchy level. * Pressing the MENU button returns to the status display.
Item Parameters
*1
Fig. 1-9-9 Error Message
Message LENS NOT CLOSED? COUNT OVER
Error Details The lens does not close for detection. The number exceeds the specified count.
Treatment No result is stored in the EEPROM. Only the specified count of data is stored in the EEPROM.
Table 1-9-3 Error Messages · White blemish can be detected in the following area.
COUNTRY
U/E
Destination setting ([NTSC] USA, [PAL] Europe)
I/EC Destination setting ([NTSC] Japan, [PAL] China) CCD CORRECT *2 ON Corrects the detected white blemish. OFF Does not correct the detected white blemish. ( indicates the factory settings.)
100 %
*1:
Table 1-9-4 Setting Items in CAMERA 2 Menu
NTSC/PAL is determined by the hardware (alteration of resistance constant) *2: This mode is set to ON at the moment the power is turned ON. The OFF mode is enabled only after it is set to OFF at this screen until the power is turned OFF.
98 %
Fig. 1-9-10 Area In Which White Blemish Detection is Available 1-10
1.9.5 VTR1 menu Operating Procedure Rotate the SELECT dial to move the cursor onto the item to be changed. Push the SELECT dial so that the parameter value blinks. Rotate the SELECT dial to vary the parameter. After completing the setting, push the SELECT dial. This stops blinking and enters the setting. (The SELECT dial mode returns to the mode for moving the cursor.) (5) After completing all of the required settings, move the cursor onto "PAGE BACK" and push the SELECT dial to return to the menu at the higher hierarchical level. * Press MENU to return to the status display. (1) (2) (3) (4)
VTR1 B A T T . S H U T D OWN B A T T . A L A RM BATT . STEP REC REPEAT P L AY REPEAT L ONG P A U S E L P WA R N I NG P AGE B ACK : : : : : : : 6 . 0 6 . 9 0 . 3 OF F OF F ON OF F
Fig. 1-9-12 VTR1 Menu
Item BATT. SHUT DOWN BATT. ALARM BATT. STEP REC REPEAT 6.0 OFF 6.9 0.3 OFF 12 ON OFF ON OFF ON OFF ON
Parameters Setting of the battery voltage at which shutdown should occur (Setting in 0.1 V steps between 5.1 V and 7.5 V) Disable battery shutdown function. Setting of the battery voltage at which battery alarm is indicated (Setting in 0.1 V steps between 5.1 V and 8.0 V) Setting of the remaining battery power display steps (Setting in 0.1 V steps between 0.1 V and 1.0 V) Disable repeat recording Perform repeat recording 12 times. Enable full repeat recording. Disable repeat playback. Enable repeat playback. Disable the long pause function. Enable the long pause function.(When STBY mode has been continued more than 30 minutes, the Drum goes to STOP mode.) Disable LP warning Enable LP warning (When LP mode is selected, "LP IS NOT RECOMMENDED" is displayed.) Parameters inside indicate the factory setups.
PLAY REPEAT LONG PAUSE
LP WARNING
Table 1-9-5 Setting Items in the VTR1 Menu
1-11
1.9.6 VTR2 menu
VTR2 T E MP S E N SO R T E MP ( D EW ) P B C L OG L E V E L R E C C L OG L E V E L P AGE B ACK 109 80 26 1
Fig. 1-9-13 VTR2 Menu
Item TEMP SENSOR 109
Parameters Threshold AD value of the temperature that forces the long pause period to 3 minutes (Initial : 30 minutes) under low temperatures (0 255). The following table shows the relationship between the set internal temperature and the threshold value. Int. Temp (approx) Threshold -10°C 34 0°C 54 5°C 67 10°C 80 20°C 109 30°C 140
TEMP(DEW) PB CLOG LEVEL
80 26
The threshold AD value of the temperature sensor that lowers the dew threshold at low temperatures (0 - 255). (The setting value of 80 corresponds to about 10°C.) The threshold level of the playback head clog error indication (0 - 31). The relationship between the threshold value and the error rate is as shown below. Error rate = Threshold x 10 (tracks) x 30 (frames) When the threshold setting is 26, the error rate is: 26 x 10 (PAL: 12) x 30 (PAL: 25) = 7800
REC CLOG LEVEL
1
The threshold level of the recording head clog error (detected during short playback in continuous recording) (0 7). The relationship between the threshold value and error rate is as shown below. Error rate = The value of PB CLOG LEVEL error rate x the setting of REC CLOG LEVEL. When the threshold setting is 1, the error rate is : 7800 x 1 = 7800 Parameters inside indicate the factory setups.
Table 1-9-6 Setting Items in VTR2 Menu 1.9.7 VTR3 menu
VTR3 RESERVED P AGE B ACK : 0
Caution : None of the setting value has reserved. Change to other values is inhibited.
Fig. 1-9-14 VTR3 Menu
Item RESERVED 0 Normal setting
Parameters
Parameters inside
indicate the factory setups.
Table 1-9-7 Setting Items in VTR3 Menu
1-12
1.9.8 DIP SW menus These menus set the DIP switches. (The factory setups are all "OFF", or "0".)
D I P D I P SW 0 D I P SW 1 D I P SW 2 D I P SW 3 D I P SW 4 D I P SW 5 D I P SW 6 D I P SW 7 NE X T P AGE P AGE B ACK SW 1 / 3 : : : : : : : : 0 OF F OF F OF F OF F OF F OF F OF F D I P D I P SW 8 9 D I P SW D I P SW 1 0 D I P SW 1 1 D I P SW 1 2 D I P SW 1 3 D I P SW 1 4 D I P SW 1 5 NE X T P AGE P AGE B ACK SW 2 / 3 : : : : : : : : OF F OF F OF F OF F OF F OF F OF F OF F D I P D I P SW 1 6 D I P SW 1 7 D I P SW 1 8 D I P SW 1 9 D I P SW 2 0 D I P SW 2 1 D I P SW 2 2 D I P SW 2 3 P AGE B ACK SW 3 / 3 : : : : : : : : OF F OF F OF F OF F OF F OF F OF F OF F
Fig. 1-9-15 DIP SW Menus
Item DIP SW 1/3 DIP SW 0 DIP SW 1 DIP SW 2 DIP SW 3 DIP SW 4 DIP SW 5 DIP SW 6 DIP SW 7 DIP SW 2/3 DIP SW 8 DIP SW 9 DIP SW 10 DIP SW 11 DIP SW 12 DIP SW 13 DIP SW 14 DIP SW 15 DIP SW 3/3 DIP SW 16 DIP SW 17 DIP SW 18 DIP SW 19 DIP SW 20 DIP SW 21 DIP SW 22 DIP SW 23 Switching inhibited Switching inhibited Switching inhibited Switching inhibited Switching inhibited Switching inhibited Switching inhibited Switching inhibited Parameters inside OFF OFF OFF OFF OFF OFF OFF OFF indicate the factory setups. Switching inhibited Switching inhibited Switching inhibited Switching inhibited Switching inhibited Switching inhibited Switching inhibited Switching inhibited OFF OFF OFF OFF OFF OFF OFF OFF 1: Error rate monitor, Other switching inhibited Disables warning detection Switching inhibited Disables dew warning detection Disables cassette outer cover switch (for servicing) Switching inhibited Switching inhibited Displays Audio level values 0 OFF OFF OFF OFF OFF OFF OFF Parameters Default
Table 1-9-8 Setting Items in the DIP SW Menus ERROR RATE MONITOR The error rate can be checked when the DIP SW-0 is set to "1." Other displays show information about signals between the port and the CPU.
W T x 2 MODE TC 0 0 : 0 0 : 0 0 : 0 0 SP1 2 0 MIN ADP OIS MF S G WB 0 1 / 5 / 1 0 PM 1 1 : 0 0 : 0 0
TEMP
PORT ND CH1 F 5 . 6 2 CH2 STBY 48K
CH 1 -- -- -- -CH 2 -- -- -- --
Error rate
1-13
1.9.9 HOUR METER menu This menu is used to clear hour meters. Set the desired parameter to "CLEAR" and push the SELECT dial to clear the corresponding hour meter.
HOUR D R UM T O T A L D R UM P OW E R C A PS T A N L OA D I NG E J ECT F WD / R E V P AGE B ACK
ME T E R : : : : : : : CL EAR 000000 000000 000000 000000 000000 000000
Fig. 1.9.16 HOUR METER
Item DRUM TOTAL DRUM Parameters 000000 Displays the drum hour meter. CLEAR Deletes the drum hour meter. 000000 Displays the total drum hour meter. CLEAR Deletes the total drum hour meter. (This does not work unless the special setting.) 000000 Displays the power hour meter. CLEAR Deletes the power hour meter. 000000 Displays the capstan hour meter. CLEAR Deletes the capstan hour meter. 000000 Display the loading count. CLEAR Deletes the loading count. 000000 Displays the ejection count. CLEAR Deletes the ejection count. 000000 Displays the forward/reverse switching count. CLEAR Deletes the forward/reverse switching count. Parameters inside indicate the factory setups.
POWER CAPSTAN LOADING EJECT FWD/REV
Table 1-9-9 Setting Items in HOUR METER Menu 1.9.10 ERROR HISTORY menu
Latest error Error 2nd from the last Error 3rd from the last Error 4th from the last Deletes error history
E RROR H ( H I S T OR Y - 1 ) 7 0 0 1 0 0 0 8 0 10 ( H I S T OR Y - 2 ) 7 0 0 1 0 0 0 8 0 10 ( H I S T OR Y - 3 ) 7 0 0 1 0 0 0 8 0 10 ( H I S T OR Y - 4 ) 7 0 0 1 0 0 0 8 0 10 CL EAR P AGE B ACK I S T OR Y 201F30122 201F30122
This menu is used to check the error history. As the error history is stored in an EEPROM, details of up to past four errors can be confirmed even after the power is turned off.
Error codes
201F30122 201F30122 OF F
Fig.1-9-17 ERROR HISTORY To delete the error history, change "CLEAR" from "OFF" to "ON" and push the SELECT dial. This deletes the entire error history. It is not possible to delete an individual error. Error Code Description A 10-byte error code is displayed when an error occurs.
7001 AABB CC DDEE FFGG HH Bytes 1,2 3, 4 5 6, 7 8, 9 10 Bytes 1, 2 Bytes 3, 4 Byte 5 Byte 6 Byte 7 Byte 8 Byte 9 Byte 10 : Error code : DON'T CARE : Mechanism position at error occurrence : Target VCR mode at error occurrence : VCR mode at error occurrence : Last accepted key code (including operation and remotely sent key code) : Last key parameter : Hex value of temperature AD input. (See the description of item "TEMP SENSOR in 1.8.6, "VCR2 Menu."
1-14
(1) Bytes 1, 2: Error code
On-Screen Display VTR WARNING [DEW] Code 02 SUB 01 Cause Dew condensation Warning Content & Detection Method Detection of voltage at MAIN board IC3 pin 100. DEW ON : 2.4V DC or more DEW OFF: 1.8V DC or less Loading does not complete. When the rotary encoder outputs at the MAIN board, the IC3 pins 83,84 and 85 are checked and loading does not complete in 4 seconds. Unloading does not complete. When the rotary encoder outputs at the MAIN board,IC3 pins 83,84 and 85 are checked and unloading does not complete in 4 seconds. Ejection does not complete. When the cassette switch signal (MAIN board IC3 pin 12) is not detected in 3 seconds after the start of ejection. Intake does not complete. When the cassette switch signal (The MAIN board IC3 pin 12) is not detected in 3 seconds after the start of intake. Leader tape cannot be pulled in with REV skip. When, in PLAY mode and others, the tape end sensor (MAIN board IC3 pin 101) remains "L" after the tape has been transported for 3 seconds by the REV skip, which happens after detection of the tape end. Leader tape cannot be pulled in with FWD skip. When the tape beginning sensor (MAIN board IC3 pin 102) remains "L" after the tape has been transported for 3 seconds by the FWD skip, which happens after detection of the tape beginning. Drum motor does not rotate. When the drum FG pulse (MAIN board IC3 pin 156) has not been detected for 4 seconds in the drum drive mode. Capstan does not rotate. When the capstan FG pulse (MAIN board IC3 pin 155) has not been detected for 2 or more seconds in the capstan drive mode. Supply reel does not rotate. When the SUP REEL FG pulse (MAIN board IC3 pin 152) has not been detected for 2 or more seconds in the transport mode. Tape slack on SUP side. Ratio between SUP reel FG and Capstan FG is abnormal. When 4500 or more capstan FG pulses are detected per SUP REEL FG pulse in the capstan drive mode. The take-up reel does not rotate. When the TU REEL FG pulse (MAIN board IC3 pin 153) has not been detected for 2 or more seconds in the transport mode. Tape slack on TU side. Ratio between TU reel FG and Capstan FG is abnormal. When 4500 or more capstan FG pulses are detected per SUP REEL FG 1 pulse in the capstan drive mode. Tape slack during unloading. When the TU REEL FG pulses are fewer than the specified value (which varies depending on the winding diameter) during unloading.
VTR WARNING [HARD] 3200AABBCCDDEEFFGGHH
32
00
Loading motor, rotary encoded or mechanism failure
VTR WARNING [HARD] 3300AABBCCDDEEFFGGHH
33
00
Loading motor, rotary encoded or mechanism failure
VTR WARNING [HARD] 4100AABBCCDDEEFFGGHH VTR WARNING [HARD] 4200AABBCCDDEEFFGGHH VTR WARNING [HARD] 5720AABBCCDDEEFFGGHH
41
00
Cassette housing switch or cassette housing defect Cassette housing switch or cassette housing defect Tape cut after tape end detection. Mechanism mode transition defect.
42
00
57
02
VTR WARNING [HARD] 5802AABBCCDDEEFFGGHH
58
02
Tape cut after tape begin detection. Mechanism mode transition defect.
VTR WARNING [HARD] 7001AABBCCDDEEFFGGHH VTR WARNING [HARD] 7101AABBCCDDEEFFGGHH
70
01
Drum motor or MDA circuit defect. FG sensor defect. Capstan motor or MDA circuit defect. FG sensor defect.
71
01
VTR WARNING [HARD] 7202AABBCCDDEEFFGGHH
72
02
Timing belt cut. Mechanism reel control part defect.
VTR WARNING [HARD] 7203AABBCCDDEEFFGGHH
72
03
Timing belt cut. Mechanism reel control part defect.
VTR WARNING [HARD] 7302AABBCCDDEEFFGGHH
73
02
Timing belt cut. Mechanism reel control part defect.
VTR WARNING [HARD] 7303AABBCCDDEEFFGGHH
73
03
Timing belt cut. Mechanism reel control part defect.
VTR WARNING [HARD] 7305AABBCCDDEEFFGGHH
73
05
Timing belt cut. Mechanism reel control part defect.
Table 1-9-10 (1) Error Code List 1-15
(2) Byte 5: Mechanism position at error occurrence
00 01 02 03 CASSETTE-IN CASIN2HALF HALF HALF2LOAD 04 05 06 07 LOAD LOAD2FWD FWD FWD2REV 08 09 0A 0B REV REV2STOP STOP STOP2FAST 0C 0D 0E FAST INVALID INITIAL
Table 1-9-10 (2) Mechanism Position
(3) Bytes 6, 7: VCR mode.
Code 00 01 02 03 04 05 06 07 08 09 0A 0F 13 14 15 16 1A 21 22 VTR Mode UL_STOP EJECT LD_STOP PLAY STILL FF REW S_FF (Search) S_REW (Search) SLOW_FWD SLOW_REV V_PLAY REC REC_P DV_REC DV_RECP POWER_OFF OVER EJECT PINCH ON STOP
(4) Bytes 8, 9: Key code
Code D0 D1 D2 D3 D4 D5 D6 D7 D9 DA DB DC DD DE DF Still Step Fwd Slow Fwd1 Slow Fwd2 Play Fwd Search Fwd1 Search Fwd2 Search Fwd3 Search Rev3 Search Rev2 Search Rev1 Play Rev Slow Rev2 Slow Rev1 Step Rev Key Code Code E0 E1 E2 E7 E8 E9 EA EB EC ED EE F0 F1 F4 F5 Rec Rec Pause DV Rec Pause Play Still FF Rew Slow Fwd Slow Rev Variable Play Trigger Stop Eject Power Off DV Rec Key Code
Table 1-9-10 (4)
Table 1-9-10 (3)
1-16
1.9.11
OTHERS menu
OTHERS M E MO R Y SW M E MO R Y SW A L L RESET MEM . E D I T DA TA : 0 0 P AGE B ACK L OAD : OF F SAVE : OF F : CANCE L ADR : 0 0 0
Fig. 1-9-18 OTHERS Menu
Item MEMORY SW LOAD MEMORY SW SAVE OFF START OFF
Parameters Does not load the Memory switch information. Loads the Memory switch information from the save area. Does not save the Memory switch information.
ALL RESET MEM.EDIT
START Saves the Memory switch information in the save area. CANCEL Does not perform the all reset operation. EXECUTE Resets the EEPROM data other than the adjustment data , the hour meter data and IEEE1394 ID data to the factory setups. Direct editing of the EEPROM data is possible. ADR : Address (0 -- 3FF) DATA: Stored data Operating Procedure 1 Rotate the SELECT dial to move the cursor on "MEM.EDIT". 2 Push the SELECT dial so that parameter "ADR" blinks. 3 Rotate the SELECT dial to select the ADR parameter to be edited. 4 Push the SELECT dial so that parameter "DATA" blinks. 5 Rotate the SELECT dial to change the DATA parameter. 6 Push the SELECT dial to confirm the DATA parameter. (This stops the blinking of the parameter.) * The EEPROMs store important data for the system and careless rewriting may make normal operation of the system impossible. Do not use this function for purposes other than the IEEE1394 ID data that is described. Parameters inside indicate the factory setups.
Table 1-9-11 Setting Items in OTHERS Menu
1-17
1.10
EEPROMS
(1) EEPROMs and stored data
EEPROM IC406 Board Name A/L/S board Memory Contents Menu setting data Camera adjustment data DVC adjustment data IEEE1394 ID data HOUR METER data ERROR HISTORY IC907 MAIN board Lens adjustment data
After replacement of a board or EEPROM, the EEPROM contains no data at all. But it is initialized automatically when the power is turned on. As the adjustment data, menu data and IEEE1394 are reset, it is required to readjust them. (2) IEEE1394 ID setting method A device equipped with IEEE1394 contains the ID prescribed in the IEEE1394 standard in its EEPROM. The ID assigned for each device is written in the memory at the time of production and the ID label indicating it is attached to the side of the mechanism. After replacing the EEPROM or A/L/S board, be sure to re-set the ID in the EEPROM. IEEE1394 ID Setting Procedure The ID is an 8-digit hex code, composed of the model code in the highest byte and the individual code in the 3 lower bytes. As the model code is initialized automatically, it is required to set the individual code in the 3 lower bytes. In the OTHERS Menu, select "MEM.EDIT" (Memory Edit), select the addresses for the ID data and set it directly. The addresses of the 3 lower bytes are as shown below. Set the ID data by referring to the label (ID: 41xxxxxx) attached on the side of the GY-DV300 mechanism.
ID Address data : 41 x x x x x x : "391" "392" "393"
1. Rotate the SELECT dial to move the cursor on "MEM.EDIT". 2. Push the SELECT dial so that parameter "ADR" blinks. 3. Rotate the SELECT dial to select ADR parameter "391". 4. Push the SELECT dial so that parameter "DATA" blinks. 5. Rotate the SELECT dial to set the ID. 6. Push the SELECT dial to enter the DATA parameter. 7. Also set ADR parameters "392" and "393" by repeating the same steps for each.
1.11
REAL-TIME CLOCK
IC405 (RS5C314) on the A/L/S board is the real-time clock IC, which transfers the time and calendar data to the CPU by means of serial transfer. BT401 is the secondary battery that backs up IC405 while external power is not supplied. It supplies a voltage of 3 V and is capable of backing up for about 3 months after it has been recharged for 4 hours. When external power is supplied, the AL 3 V power is sent through D401 to pin 8 of IC405, then through D402 to BT401 for recharging it. When the power supply stops, the AL 3 V power disappears so BT401 starts discharging power, which is sent through D401 to pin 8 of IC405 for backing up the clock.
AL3V
IC401 SYS CPU
IRQO TCLKC IRQ1 TCLKD 38 39 40 41 1 2 3 4 CE SCLK SIO VSS D402 D401
IC405
VDD OSCIN OSCOUT INTR 8 7 6 5 X403 32kHz GND BT401
Fig. 1-11-1 Real-time Clock Backup Circuit 1-18
SECTION 2 MECHANICAL ADJUSTMENTS
2.1 BEFORE ADJUSTMENTS 3) 80-minute tape If an 80-minute tape is used, block noise may occur during playback even when playing a tape that has been recorded using the same unit. Therefore 80-minute tapes cannot be used. Regarding Head Drum Change 1) When the head drum is exchanged, compatibility with tapes that were previously recorded using that unit will be lost, and block noise may occur during tape playback. When performing a head drum exchange, be sure to explain this to the customer beforehand, and encourage the customer to take appropriate steps as necessary such as dubbing recordings in SP mode. 2) On maintaining compatibility Although there are restrictions as outlined above, as a part of your service efforts to maintain compatibility after head drum exchange, we recommend the following measures: 1 First, record in LP mode before carrying out the head drum exchange. 2 Carry out drum exchange and perform compatibility adjustment. 3 Play the tape recorded in 1 and check to see if the RF waveform is good. If there is a severe drop in the wave due to mistracking, please fine-tune the RF waveform within the limits of the adjustment specification to bring it closer to the track pattern prior to head drum exchange. 2.1.3 Measuring instruments required for adjustments Instrument Oscilloscope Condition Calibrated instrument with measuring bandwidth of 100 MHz or more. Table 2-1-1
2.1.1 Precautions 1) Be sure to apply a screw securing torque when attaching a part. The securing torque should be 0.04 N-m (0.4 kgf-cm) unless otherwise specified. 2) Always unplug the power cord of the set before attaching, removing or soldering a part. 3) When unplugging a connector, do not pull the wire but grasp the connector body. 4) Do not make an adjustment or rotate a potentiometer blindly while the source of trouble is not identified. 5) Before adjusting electrical circuitry, be sure to wait for more than 10 minutes after turning the power on. 2.1.2 Regarding LP mode [IMPORTANT] The GY-DV300 is equipped with the LP mode. Although the track width of DVC SP mode is 10µ , in the LP mode this is reduced to two-thirds, so even with the slightest change in condition it may become impossible for the head to go on-track. As explained in the instruction manual, block noise and sound errors may be generated in the LP mode depending on the tape being used or the usage environment. Please be especially aware of the following points. 1) Compatibility of tapes recorded on other unit Playback is possible only with tapes recorded on the same unit. (Self-recorded playback only.) Block noise and sound errors may occur when playing a tape that has been recorded using another unit. 2) Compatibility with environmental conditions When playing back at normal temperature a tape that has been recorded in a low temperature (or high temperature) environment, block noise and sound errors may occur. The same may occur in the opposite situation as well. 2.1.4 Equipment required for adjustments
1
Alignment tape
5
Torque screwdriver
YTU94088-003
MC-1 (NTSC) MC-2 (PAL)
YTU94088
Replaceable bit (long type) 2 DV tape 6 Slit washer attaching tool
For use in self-recording/playback. (60 ME)
YTU94121A
3
Cassette torque meter
7
Connector board (REWRITE PWB)
YTU94150A (or YTU94151A)
CK453800A
4
Guide screwdriver
8
Chip IC replacement tool
YTU94085
PTS40844-2
Table 2-1-2
2-1
2.2
BASICS OF MECHANISM DISASSAMBLY/ASSEMBLY
2.2.1 Assembly mode The disassembly and assembly of the mechanism can be done in the ASSEMBLY mode (see Table 2-2-1). The ASSEMBLY mode is provided in the intermediate position between C-IN and S.FF. As the C-IN (Cassette IN) mode is usually set when a cassette tape is ejected, the ASSEMBLY mode should be entered after entering the C-IN mode. To set the ASSEMBLY mode, apply 3 V DC to the electrodes at the top of the loading motor shown in Fig. 2-2-1. The ASSEMBLY mode is set when the markings (red) on two gear teeth of the rotary encoder are aligned with the confirmation holes.
MODE
ASSEMBLY C-IN
17°
LOADING END S. FF PLAY REV STOP FF/REW
PARTS
1
36°
270.33° 223.66° 190.33° 196.33° 229.66° 30.33° 36.33°
ROTARY ENCORDER
2
276.33°
3
R. ENC
-20
0
33.33
166.66
169.66°
193.33
226.66
273.33
306.66
MAIN CAM GEAR
0
15
40
140
160
185
220
303.66°
87°
245
Table 2-2-1
DC 3V
Motor bracket assembly (Loading motor)
Note: The ASSEMBLY mode is set Wire (Brown) according to the markings (colored red) on two gear teeth of the rotary encoder. Marking (colored red) Wire (Red)
Rotary encoder
< ASSEMBLY MODE >
C
H
Back side of Mechanism assembly
Fig. 2-2-1
2-2
2.2.2 Mechanism modes The mechanism has 6 modes as shown in Table 2-3-1. The current mode can be confirmed by observing the markings on the sub-cam gear and the 8 mark on the main deck at the back side of mechanism assembly. See Figs. 2-2-2 to -7. 1. Mechanism mode confimation
C H
H
P
Fig. 2-2-2
Fig. 2-2-3
Fig. 2-2-4
R
S
F
Fig. 2-2-5
Fig. 2-2-6
Fig. 2-2-7
2-3
2.3
MECHANISM TIMING CHART
See following table (Table 2-3-1).
MODE
ASSEMBLY C-IN 17° S. FF LOADING END PLAY REV STOP FF/REW
PARTS
1
36°
270.33° 223.66° 190.33° 196.33° 229.66° 30.33° 36.33°
ROTARY ENCORDER
2
276.33°
3
ROTARY ENCODER
-20
0
33.33
166.66
169.66°
193.33
226.66
273.33
306.66
MAIN CAM GEAR
0
15
40
140
160
185
220
303.66°
87°
245
SUB CAM GEAR
0
15
40
140
160
185
220
245
ON
POLE BASE
OFF S/REV
CTL PLATE
PLAY FF/REW
ON 1
MAIN BRAKET(SUP)
ON 2 OFF
ON 1
MAIN BRAKET(TU)
ON 2 OFF ON
SUB BRAKE
OFF ON(REV MODE PRESS UP) ON(PLAY MODE)
PINCH ROLLER
OFF ON
EXIT GUIDE ARM
HALF LOADING ASSY OFF ON
TENSHION ARM
OFF 1
BAND ARM PLATE
OFF 2 OFF ON
CLUTCH LOCK
OFF 1 OFF 2 SUP CENTRRING
CENTERRING. ARM
S/REV
Table 2-3-1 2-4
2.4
MAINTENANCE AND INSPECTION OF MAJOR PARTS the product will not only reduce considerably but other unfavorable influences may produce. Rubber parts may deform or degrade after long period of storage even if they are not used in this period. The service life of the drum is variable depending on the tape used and operating environment.
Periodical inspection and maintenance are requisite to maintain the initial performance and reliability of the product. Table 2-4-1 (Maintenance & Inspection List) has been compiled assuming standard operating conditions, and the specifications in the table are greatly variable depending on the actual operating environment and conditions. Remember that, if the maintenance and inspection are not enforced properly, the operating hours of
2.4.1 Layout of major parts
2 21
19
42
46
1
18
45
41
3
43
~
44
9 23
11 25 22 5 8 15 34 10 35 38 14 39 37 31 7 6 29 40 30 17 12 36 20 44 4 32 45 26 46
~ 28
33
24
13
2-5
2.4.2 Maintenance and inspection list 1) The 6000 H maintenance consists of a replacement of the entire mechanism assembly. 2) When mounting the capstan motor on the main deck, control of the verticality is required. Therefore, when the capstan motor reaches the end of its service life, the entire mechanism assembly should be replaced.
Part Name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Tape transport parts / ENT. guide base assembly 8 Tension arm assembly ( Guide rail (S) assembly % Guide rail (T) assembly 3 Middle catcher assembly 7 Capstan shaft 5 Pin roller arm assembly 9 Exit guide arm assembly 1 Drum assembly q Capstan motor fi Reel drive pulley assembly e R.drive gear 1 r R.drive gear 2 > Center gear assembly < Timing belt ° Clutch lock gear 1 Clutch lock gear 2 6 Sub-brake assembly @ Main brake (S) assembly # Main brake (T) assembly $ 15Reel disk assemblies 7 Band arm plate assembly 0 Swing arm assembly ¤ Worm wheel 2 2 Motor bracket assembly ¢ Rotary encoder assembly ¶ Centering arm assembly Min cam · Sub cam t Cleaner arm assembly r Cassette guide pin t Cassette guide y MIC contact Mechanism assembly (including cassette housing assembly)
Operating Hours (DRUM Hour Meter) Symbol 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 No.
Ref.
M 6 19 M 6 40 M 6 22 M 6 23 M 6 24 M6 4 M 6 44 M 6 43 M 6 50 M6 4 M 6 33 M 6 47 M 6 48 M 6 34 M 6 11 M 6 12 M 6 14 M 6 36 M 6 38 M 6 37 M 6 39 M 6 41 M 6 42 M6 3 M 6 20 M 6 21 M 6 26 M6 8 M6 9 M 6 43A M 6 35 M 6 35 M 6 35 M6 1
2.7.14 2.7.8 2.7.12 2.7.12 2.7.5 2.7.3 2.7.4 2.7.2 > > > > > > > > > > > > > > > > > > > > > > > > > 2.7.15 2.7.15 2.7.15 2.7.14 2.7.14 2.7.15 2.7.10 2.7.10 2.7.10 2.7.11 2.7.8 2.7.7 2.7.14 2.7.2 2.7.18 2.7.18 2.7.18 2.7.19 2.7.4
>
>
: Clean with ethanol.
: Check and replace if required. : Replace. >: Oil the shaft. After replacing a part, apply lubricant to the required points.
Table 2-4-1
2-6
2.4.3 Cleaning The mechanism incorporates a video head cleaner that is effective for the removal of magnetic dust, etc. However, tape lubricant adhering to the head surface produces a spacing loss, it is recommended to polish the heads using a head cleaning tape. When the video heads become soiled an increase in the error rate results. Eventually, when the error rate increase is too much to be corrected by the error correction circuit, block noise will be observed in the picture. 1) Cleaning the video heads Use the DVC cleaning cassette for cleaning the video heads. Always be sure to use the cleaning cassette, Part No. MDV12CLAUX. The video heads should be cleaned periodically. Moreover, care should be taken about the operating environment as the tape running time standard varies accordingly. Please refer to "Precautions for Use of Head Cleaning Tape" in the instructions. Caution As the DVC cleaning tape has a much higher lapping effect than VHS cleaning tapes, frequent use of the DVC cleaning tape will reduce the head service life. Do not play the DVC cleaning tape for more than 10 seconds per run or for more than 4 times per cleaning session. The cleaning tape can be used effectively for up to about 4 passes. It cannot improve the cleaning effect even if it is run for more than 4 times.
High-quality paper
Upper drum Head tip
Apply
lightly.
Core drum
Carefully clean the lead tape inlet/outlet.
Toothpick
Lead Lower drum
Fig. 2-4-1 3) Cleaning the tape transport system Moisten the tip of a cotton swab with alcohol and use it to clean the tape transport parts. Take special care of the TU/ SUP guide roller flanges and the rear sides of the inclined poles, as these are the parts that most frequently collect magnetic dust. Caution Do not wipe the capstan shafts using alcohol. Otherwise, the oil in the bearings may be diluted by the alcohol and become attached to the tape.
Take special care.
2) Cleaning the upper/lower drums Use a cleaning cloth or high-quality paper sheet to clean the upper drum. Moisten the cloth or paper sheet with a small amount of ethyl alcohol, apply it lightly against the upper drum while turning it by hand. After this operation, wipe it with a dry cloth or paper sheet without alcohol. Be sure to play the cleaning tape to its end. The lower drum tends to gather magnetic dust, etc. in its lead section, and linearity cannot be achieved if this becomes excessively dirty. The tape inlet and outlet areas are contaminated particularly easily, causing trouble such as dropout in FM signal reproduction, block noise on one side of a monitored picture, absence of audio output or incapability of time code readout. To clean the lead section, use a toothpick and rub lightly along the lead section. Be careful not to scratch the video head when this is done.
Fig. 2-4-2 Guide Roller 2.4.4 Oiling and greasing Table 2-4-2 shows the oil and greases used with the set. Classification Oil Grease Name Cosmo Hydro HV100 Maltemp SH-P Hanal Table 2-4-2 1) Oiling should be performed periodically. Oil the shafts by referring to the maintenance table. 2) After replacing a part, grease the required points. For the parts to be greased see the exploded diagram in chapter 5, "DISASSEMBLY DRAWINGS AND PARTS LIST". 3) As Hanal separates over time, be sure to mix it (shake) well before use. 4) Take care not to leave grease or oil on the tape transport parts which come into contact with the tape or on the brake pads. 5) Take care not to apply too much oil or grease. The standard oiling quantity is one drop and the standard greasing quantity is the quantity with which the grease does not overflow. 2-7 Part No. YTU94027 KYODO-SH-P RX-410R
2.5
PERIODICAL MAINTENANCE
Perform maintenance at the correct times in accordance with the maintenance table. Fig. 2-5-1 shows the flow chart of periodical maintenance procedures at different operating hours.
2000-hour maintenance Start 6000-hour maintenance Start
Replaced parts / ENT. guide base assembly 8 Tension arm assembly ( Guide rail (SUP) assembly % Guide rail (TU) assembly 3 Middle catcher assembly 5 Pinch roller arm assembly 9 Exit guide arm assembly 1 Drum assembly fi Reel drive pulley assembly e R. drive gear 1 r R. drive gear 2 > Center gear assembly < Timing belt ° C. lock gear 1 C. lock gear 2 6 Sub-brake assembly # Main brake (TU) assembly $% Reel disk assembly 7 Band arm plate assembly 0 Swing arm assembly ¤ Worm wheel 2 assembly 2 Motor bracket assembly ¢ Rotary encoder assembly ¶ Centering arm assembly Main cam · Sub cam t Cleaner arm assembly
Replaced parts Mechanism assembly including capstan motor and cassette housing assembly
2.11 Torque adjustment
2.12 Compatibility adjustment
3.5.1 PB switching point adjustment
3.5.2 Recording current adjustment
3.5.3, 3.5.4 VCO center frequency adjustment
End
2.11 Torque adjustment
2.12 Compatibility adjustment
3.5.1 PB switching point adjustment
3.5.2 Recording current adjustment
3.5.3, 3.5.4 VCO center frequency adjustment
End
Fig. 2-5-1 2-8
2.6
DISASSEMBLY/ASSEMBLY OF MECHANISM ASSEMBLY
2.6.1 Assembly/disassembly The following table shows the mechanism assembly/disassembly procedures.
2.6.2 Screws and washers used in mechanism assembly disassembly/assembly Table 2-6-1 shows the symbols, designs, part numbers and colors of the screws and washers used with the Mechanism assembly. When disassembling or assembling the Mechanism assembly, be sure to attach the correct screws and washers by referring to the following table.
1 : Names of the disassembled/assembled parts. 2 : Items of disassembly. 3 : Parts to be removed for disassembly, such as screws, washers and springs, and points.
Symbol
Symbol S W P * Name or Point Screw Washer Spring Connector, lock (L), soldering (SD), shield, etc.
Design
Part No. QYSDSP2005Z YQ43893 YQ43893-7 QYSPSF2006Z
Color Gold Silver Black Gold
(S1) (S2) (S3) (S4)
Symbol W1 W2 W3
Design
Part No. YQ44246 YQ44246-3 YQ43933-2
Color Red Black Black
Fig. 2-6-1
Part Name 1 2 3 4
Item No. 1 2 2 3
Points 2(S1), (L1) to (L5) 3(S2) 4(S2) 3(S2)
Remark
Å Cassette housing assembly, i Main deck assembly 1 Drum assembly 2 Motor bracket assembly 3 Middle catcher assembly 1
2
3
2-9
2.6.3 Mechanism assembly disassembly procedure table Part Name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 2-10 Item No. 1 2 2 5 6 3 10 8 8 4 7 9 10 10 11 11 7 11 12 12 13 14 14 14 14 15 15 15 15 16 16 16 17 17 18 18 18 18 19 19 19 3 (S2) 4 (S2) 3 (S2) (S2), 2 (L6) (W1), (L7) (P1), (W1), (L8) (S3), (L9), (P2), (W2) (P3) (W1) 5 (S2) (P4), (L10) (P5), (L11) (S2) (2 (L12) 4 (S2) (S2), 2 (L13) (S2), 2 (L14) (S2) (W1) (W1) (W3) (P6) (L15) (W1), (L16) (L17) (S2) (S2) 2 (S2) (W1) Collar (L18) (S2) (L19) 3 (S2) 15 15 4 Table 2-6-2 (W1) (W1) (W1) Position alignment Position alignment Position alignment (Phase alignment) (Phase alignment) Phase alignment Phase alignment Position alignment Position alignment Phase alignment Position alignment Position alignment Change with mechanism assembly Phase alignment Position alignment Position alignment Position alignment Position alignment Points 2 (S2), 2(S4) Remark
Å Cassette housing assembly 1 Drum assembly 2 Motor bracket assembly 3 Middle catcher assembly 4 Reel cover assembly 5 Pinch roller arm assembly 6 Sub-brake assembly 7 Band arm plate assembly 8 Tension arm assembly 9 Exit guide arm assembly 0 Swing arm assembly ! Sub-deck assembly @ Main brake (SUP) assembly # Main brake (TU) assembly $ Reel base assembly (SUP) % Reel base assembly (TU) ^ Prism & Control plate * Guide rail (TU) assembly ( Guide rail (SUP) assembly ) Base plate assembly / ENT. guide base assembly ¤ Worm wheel 2 < Timing belt > Center gear assembly fi Reel drive pulley assembly fl Push plate Clutch lock gear 2 ° Clutch lock gear 1 · Tension control arm assembly , Brake control arm assembly ¡ Charge arm assembly TM Connect gear 2 (SUP) £ Connect gear 2 (TU) ¢ Rotary encoder assembly Main cam § Arm gear 1 assembly ¶ Centering arm assembly · Sub cam ª Arm gear 2 assembly º Clutch lock lever assembly q Capstan motor w Drum base deck e R.drive gear 1 r R.drive gear 2 t Cleaner arm assembly
2 21 11 22 8 34 35 14 37 7 29 30 17
19
42
46
1
18
45
41
3
43 44 9 23 25 5 15 10 38 39 31 6 40
12
36
20
4
32
26 28
33
24
13
Fig. 2-6-1 2.6.4 Mechanism disassembly/assembly procedure chart The following chart shows the disassembly/assembly procedures by dividing them into blocks A to I. To remove the tension arm sub-assembly which is located in block D; start disassembly from block A. The tension arm sub-assembly can be removed as the fourth operation after the removals of the cassette housing assembly (block A) reel cover assembly (block B) band arm plate assembly (block C). The parts enclosed in thick frames are the maintenance parts listed in the maintenance table. For details on the disassembly/assembly, see section 2.7, "Replacement of Major Parts".
A BLOCK B BLOCK C BLOCK
Disassembly Procedure Assembly Procedure
1 Drum assembly
Å Cassette housing assembly
2 Motor bracket assembly
3 Middle catcher assembly
4 Reel cover assembly
6 Sub-brake assembly
5 Pinch roller arm assembly
/ ENT guide base assembly ¤ Worm wheel 2 8 Tension arm sub-assembly
7 Band arm plate assembly $ Reel base assembly (SUP)
0 Swing arm assembly
@ Main brake (SUP) assembly
# Main brake (TU) assembly
% Reel base assembly (TU)
9 EXIT guide arm assembly
D BLOCK E BLOCK F BLOCK G BLOCK H BLOCK I BLOCK
^ Prism
* Guide rail (TU) assembly
!Sub-deck assembly
( Guide rail (SUP) assembly
< Timing belt
£ Connect gear 2 (TU)
· Tension control arm assembly
, Brake control arm assembly
)Base plate assembly
& Control plate
¡ Charge arm assembly
¢ Rotary encoder assembly
fi Reel drive pulley assembly q Capstan motor assembly
> Center gear assembly § Arm gear 1 assembly
Main cam
TM Connect gear 2 (SUP)
fl Push plate
· Sub cam
¶ Centering arm assembly
Clutch lock gear (2)
º Clutch lock lever assembly
ª Arm gear 2 assembly
w Drum base deck
° Clutch lock gear (1)
Fig. 2-6-2 2-11
No.
Item
Reference picture/drawing
Procedure
2.7 REPLACEMENT OF MAJOR PARTS Make sure that the mechanism is in the ASSEMBLY mode before proceeding to disassembly or assembly. (See section 2.1, "Assembly Mode".) Screws must always be tightened using a torque screwdriver and at the specified torque. 1
Å Cassette housing assembly
S2
A
S4
1) Remove the 2 screws (S2) and 2 screws (S4) then take out the cassette housing by sliding it upward and toward the front.
1) Reverse the removal procedure.
B
Fig. 2-7-1 2
1 Drum assembly, 2 Motor bracket assembly y Assise guide 3
(S2) (S2) 6 (S2) 7 9 (S2) (S2) 8 (S2)
1 Drum assembly
1) Remove the screw (S2) and take out the Assise guide y. 2) Remove the 3 screws (S2) and take out the assembly.
46
4 (S2)
5 (S2)
2
1
2 Motor bracket assembly 1) Remove the 4 screws and take out the motor bracket assembly.
1) Reverse the removal procedure
Fig. 2-7-2 2-12
No.
Item
Reference picture/drawing
Procedure
3
5 Pinch roller arm assembly
(W1)
1) Remove the washer (W1) and pull out the assembly.
5 A
1) Fit the pinch roller arm assembly Å into the boss (L7) of the charge arm assembly. 2) Attach the washer (W1).
(L7)
Fig. 2-7-3
4
9 Exit guide arm assembly t Cleaner arm assembly
45
(W1)
1) Remove the washer (W1) and pull out the assembly.
(W1)
9
1) Reverse the removal procedure.
Fig. 2-7-4
2-13
No.
Item
Reference picture/drawing
Procedure
5
3 Middle catcher assembly
10 12 (S2) 11 (S2) (S2)
1) Remove the 3 screws (S2) and remove the assembly.
3
1) Reverse the removal procedure.
Fig. 2-7-5
6
4 Reel cover assembly
13 (S2)
1) Remove the screw (S2). 2) Slide the assembly toward the drum and lift the assembly up to remove it. NOTE After having removed the reel cover, take care because the parts located below the reel cover tend to slip out easily.
4
(L6)
1) Insert the reel cover into (L6) and attach by reversing the removal procedure.
(L6)
Fig. 2-7-6 2-14
No.
Item
Reference picture/drawing
Procedure
7
0 Swing arm assembly
1) Pull the assembly upward.
10
1) Reverse the removal procedure.
Fig. 2-7-7
2-15
No.
Item
Reference picture/drawing
Procedure
8
7 Band arm plate assembly, 8 Tension arm assembly
14 (S3) (W2)
7
(P2)
1) Remove the washer (W2). 2) Remove the screw (S3). 3) Remove the spring (P2). 4) Remove the band arm plate assembly and tension arm assembly.
8
(P3)
NOTE Be careful not to lose the spring (P3).
1) Attach the spring (P3) to the tension arm assem(L9)
bly. Engage the longer end of spring to hook a and the shorter end to hook b as shown in Fig. 27-8(b). 2) Attach the tension arm sub-assembly. 3) Attach the band arm plate assembly. 4) Clamp with the screw (S3) and washer (W2). 5) Attach the spring (P2) to (L9). NOTE After attaching, ensure that the band arm assembly can rotate in the direction of the arrow as shown in Fig. 2-7-8(c). Attach so that the section Å comes on the outer side of the tension arm assembly 8.
Fig. 2-7-8(a)
Attaching the spring Step 1
Hook a (Longer end) Step 2 Hook b (Shorter end)
Å
Fig. 2-7-8(c)
Step 3
The spring (P3) should be attached only to the tension arm assembly 8. It should not contact the band arm plate assembly 7. Fig. 2-7-8(b)
6) After attaching, adjust the tension.
2-16
No.
Item
Reference picture/drawing
Procedure
8
1) Without loading a tape, set the mechanism mode to PLAY mode. To switch the mode, rotate worm wheel 2 while the motor bracket assembly is disengaged (see 2.2, "Mechanism Modes"). 2) Rotate the tension arm slightly clockwise to eliminate production of rattle with the band arm plate. 3) Ensure that the notch on the tension arm is located within area A. (See Fig. 2-7-8(e).) 4) If the tension arm is not located in area A, loosen screw B (black) lightly and fine-adjust the position of the band arm plate assembly. Turn the screw counterclockwise to move the tension arm extremity toward the right or clockwise to move it toward the left. 5) After the adjustment, clamp the band holder by tightening screw B (black) (with a securing torque of 5.88 Nm, or 0.6 kgf-cm). Then adjust the tension arm position again.
A
Position alignment point
Notch on tension arm
Notch on tension arm Turn the tension arm in the clockwise direction.
Tension arm Band arm plate
Joint between the tension arm and band arm plate (must not rattle here.) OK (Lower limit) Screw B (Black) No Good
Counterclockwise direction Clockwise Band holder direction OK (Center) No Good
Fig. 2-7-8(d)
OK (Upper limit)
Fig. 2-7-8(e)
2-17
No.
Item
Reference picture/drawing
Procedure
9
! Sub-deck assembly
15 (S2) 16 (S2) 35 (S2) 18 (S2) 17 (S2)
1) Remove the 5 screws (S2) and pull out the assembly.
The boss should fit into the hole. Phase alignment Control plate
(L11)
1) While sliding the control plate toward the left, attach the sub-deck assembly.
11
NOTE Attach by aligning the phase holes of the main deck assembly and control plate.
2) Clamp with 5 screws (S2).
Fig. 2-7-9
10
@ Main brake (SUP) assembly, # Main brake (TU) assembly, 6 Sub-brake assembly
Main brake (SUP) (TU) assembly 1) Remove the spring by disengaging its ends from the hooks (L10) and (L11).
12
(P4)
13
(P5) (W1)
Sub-brake assembly 1) Remove the washer (W1). 2) Remove the spring by disengaging it from the hook (L8).
(L10) (L11) (L8)
11
1) Reverse the removal procedure.
6
(P1)
Fig. 2-7-10 2-18
No.
Item
Reference picture/drawing
Procedure
11
$ Reel base (SUP) assembly, % Reel base (TU) assembly, & Control plate, ^ Prism
14
15
1) Pull up each assembly to remove it. The control plate can be removed by sliding it toward the left as shown by the