JVC HR-XV31EK, HR-XV31EX, HR-XV32EK, HR-XV3EK, HR-XV3EX Service Manual
...
SERVICE MANUAL
DVD PLAYER & VIDEO CASSETTE RECORDER
YD002200311
HR-XV3EK, HR-XV31EK,
HR-XV32EK, HR-XV3EX,
HR-XV31EX, HR-XVS30EK,
HR-XVS30EX
(EK models)
(EX models)
(S-VHS models)
HR-XV3EK, HR-XV31EK, HR-XV32EK, HR-XV3EX, HR-XV31EX, HR-XVS30EK, HR-XVS30EX [D3PV1,D3PS1]
For disassembling and assembling of MECHANISM ASSEMBLY, refer to the SERVICE MANUAL No.86700 (MECHANISM ASSEMBLY).
(VHS models)
(S-VHS models)
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED
No.YD002
2003/11
SPECIFICATION
HR-XV3EK, HR-XV31EK,
HR-XV32EK
GENERAL
Power requirement AC 220V - 240V, 50 Hz/60 Hz
Power consumption
Power on 26 W 30 W
Power off 6.0 W
Temperature
Operating 5°C to 40°C
Storage -20°C to 60°C
Operating position Horizontal only
Dimensions (W×H×D) 435 mm × 93 mm × 272 mm
Weight 4.5 Kg 4.4 Kg 4.5 Kg 4.4 Kg
Format VHS PAL standard S-VHS/VHS PAL standard
Maximum recording time
(SP) 240 min. with E-240 video cassette
(LP) 480 min. with E-240 video cassette
(EP) - 720 min. with E-240 video cassette
VIDEO/AUDIO (VCR deck)
Signal system PAL-type colour signal and CCIR monochrome signal, 625 lines/50 fields
Recording system DA4 (Double Azimuth) head helical scan system
Signal-to-noise ratio: 45 dB
Horizontal resolution 250 lines SP/LP: 250 lines (VHS)/400 lines (S-VHS)
Frequency range 70 Hz to 10,000 Hz (Normal audio) 20 Hz to 20,000 Hz (Hi-Fi audio)
Input/Output 21-pin SCART connectors: IN/OUT × 1, IN/DECODER × 1
RCA connectors: VIDEO IN × 1, AUDIO IN × 1, AUDIO OUT × 1
VIDEO/AUDIO (DVD deck)
Signal system PAL
Applicable disc DVD (12 cm, 8 cm), CD (12 cm, 8 cm)
Audio characteristics DVD:4 Hz - 22 KHz
Frequency response CD:4 Hz - 20 KHz
S/N Ratio 90 dB
Wow and flutter Below Measurable Level
Dynamic range 90 dB
Output
Component-Y - (RCA) 1.0 Vp-p/75 Ω
Component-PB/PR - (RCA) 0.7 Vp-p/75 Ω
Audio (RCA) 2 Vrms, 1 KΩ
Digital Audio -21 dBm to -15 dBm(peak)
TUNER/TIMER(VCR deck)
TV channel storage
capacity
Tuning system Frequency synthesized tuner
Channel coverage VHF : 44.5 MHz - 143 MHz/
143MHz - 470 MHz
UHF : 470 MHz - 862 MHz
Aerial output UHF channels 22 - 69 (Adjustable)
Memory backup time Approx. 10 min.
ACCESSORIES
Provided accessories RF cable, Infrared remote control unit, "R6" battery × 2
HR-XV3EX, HR-XV31EX HR-XVS30EK HR-XVS30EX
EP: 220 lines (VHS)/350 lines (S-VHS)
21-pin SCART connectors: IN/OUT × 1, IN/DECODER × 1
99 positions (+AUX position)
VHF : 47 MHz - 89 MHz/
104 MHz - 300MHz/302 MHz 470 MHz
UHF : 470 MHz - 862 MHz
RCA connectors: VIDEO IN × 1, AUDIO IN × 1, AUDIO OUT × 1
VHF : 44.5 MHz - 143 MHz/
143 MHz - 470 MHz
UHF : 470 MHz - 862 MHz
S-Video connector: IN × 1
VHF : 47 MHz - 89 MHz/
104 MHz - 300 MHz/302 MHz 470 MHz
UHF : 470 MHz - 862 MHz
Specifications shown are for SP mode unless otherwise specified.
E.& O.E. Design and specifications subject to change without notice.
Manufactured under license from Dolby Laboratories. "Dolby" and the double-D symbol are trademarks of Dolby Laboratories.
"DTS" and "DTS Digital Out" are trademarks of Digital Theater Systems, Inc.
1-2 (No.YD002)
SECTION 1
r
e
PRECAUTION
1.1 SAFTY 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.
1.1.1 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:
• Wires covered with PVC tubing
• Double insulated wires
• High voltage leads
(5) Use specified insulating materials for hazardous live parts.
Note especially:
• Insulation Tape
• PVC tubing
•Spacers
• Insulation sheets for transistors
•Barrier
(6) When replacing AC primary side components (transformers,
power cords, noise blocking capacitors, etc.) wrap ends of
wires securely about the terminals before soldering.
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.
(12) Crimp type wire connectorIn such cases as when replacing
the power transformer in sets where the connections between the power cord and power trans former 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.
• Connector part number :E03830-001
• Required tool : Connector crimping tool of the proper
type which will not damage insulated parts.
• Replacement procedure
a) 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.1-1-3
b) 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
Fig.1-1-4
c) Align the lengths of the wires to be connected. In-
sert the wires fully into the connector.
Metal sleeve
Fig.1-1-1
(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.
Power cord
Fig.1-1-2
(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.
Connector
Fig.1-1-5
d) As shown in Fig.1-1-6, 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.
1.2
5
2
.0
5.5
Crimping tool
Fig.1-1-6
e) Check the four points noted in Fig.1-1-7.
Not easily pulled free
Wire insulation recessed
more than 4 mm
Crimped at approx. cente
of metal sleev
Conductors extended
Fig.1-1-7
(No.YD002)1-3
1.1.2 Safety Check after Servicing
Examine the area surrounding the repaired location for d amage
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 Fig.1-1-11 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 Fig.1-1-11 below.
d
Chassis
d'
Power cord
primary wire
Fig.1-1-8
(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 Fig.1-1-9 and following Fig.1-1-12.
ab
Externally
exposed
accessible part
Z
V
c
A
Fig.1-1-9
(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 Fig.1-1-10 and grounding
specifications.
AC inlet
Earth pin
Exposed accessible part
MIlli ohm meter
Grounding Specifications
Region
USA & Canada
Europe & Australia
Grounding Impedance (Z
Z 0.1 ohm
Z 0.5 ohm
)
Fig.1-1-10
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
1 M R 12 M /500 V DC
R 10 M /500 V DC
)
Dielectric Strength
AC 1 kV 1 minute
AC 1.5 kV 1 minute
AC 1 kV 1 minute
AC 3 kV 1 minute
AC 1.5 kV 1 minute
(
Class
(
Class
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
)
Fig.1-1-11
AC Line Voltage
100 V
110 to 130 V
110 to 130 V
220 to 240 V
Region
Japan
USA & Canada
Europe & Australia
Load Z
1
0.15
1.5
2
50
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
Fig.1-1-12
NOTE :
These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
)
)
)
1-4 (No.YD002)
1.2 Preventing static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser
diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.2.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players.
Be careful to use proper grounding in the area where repairs are being performed.
(1) Ground the workbench
Ground the workbench by laying conductive material (such as a conducti ve sheet) or an iron plate over it before placing the
traverse unit (optical pickup) on it.
(2) Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
(3) Handling the optical pickup
• In order to maintain quality during transport and before insta llation, both sides of the lase r diode on the replacement o ptical
pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily
destroy the laser diode.
(No.YD002)1-5
1.3 Important for laser products
(1) CLASS 1 LASER PRODUCT
(2) DANGER : Invisible laser radiation when open and inter
lock failed or defeated. Avoid direct exposure to beam.
(3) CAUTION : There are no serviceable parts inside the
Laser Unit. Do not disassemble the Laser Unit. Replace the
complete Laser Unit if it malfunctions.
(4) CAUTION : The compact disc player uses invisible laser
radiation and is equipped with safety switches which
prevent emission of radiation when the drawer is open and
the safety interlocks have failed or are de feated.
It is dangerous to defeat the safety switches.
VARNING
Osynlig laserstrålning är denna del är öppnad och spårren är
urkopplad. Betrakta ej strålen.
VARO
Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle. Älä katso säteeseen.
ADVARSEL
Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er
ude af funktion. Undgå udsasttelse for stråling.
ADVARSEL
Usynlig laserstråling ved åpning, når sikkerhetsbryteren er avslott. unngå utsettelse for stråling.
REPRODUCTION AND POSITION OF LABEL and PRINT
WARNING LABEL
(5) CAUTION : If safety switches malfunction, the laser is able
to function.
(6) CAUTION : Use of controls, adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
CAUTION
Please use enough caution not to see the beam directly
or touch it in case of anadjustment or operation check.
CN7103
CN501
A/C HEAD
CN2001
CN7101
CN6201
CN5001
1-6 (No.YD002)
1.4 Precautions for Service
1.4.1 Handling of Traverse Unit and Laser Pickup
(1) Do not touch any peripheral element of the pickup or the actuator.
(2) The traverse unit and the pickup are precision devices and therefore must not be subjected to strong shock.
(3) Do not use a tester to examine the laser diode. (The diode can easily be destroyed by the internal power supply of the tester.)
(4) To replace the traverse unit, pull out the metal short pin for protection from charging.
(5) When replacing the pickup, after mounting a new pickup, remove the solder on the short land which is provided at the center of
the flexible wire to open the circuit.
(6) Half-fixed resistors for laser power adjustment are adjusted in pairs at shipment to match the characteristics of the optical block.
Do not change the setting of these half-fixed resistors for laser power adjustment.
1.4.2 Destruction of Traverse Unit and Laser Pickup by Static Electricity
Laser diodes are easily destroyed by static electricity charged on clothingor the human body. Before repairing peripheral elements of
the traverse unit or pickup, be sure to take the following electrostatic protection:
(1) Wear an antistatic wrist wrap.
(2) With a conductive sheet or a steel plate on the workbench on which the traverse unit or the pick up is to be repaired, ground the
sheet or the plate.
(3) It solders to two short circuit sections on the substrate of a pick-up.
(4) After removing the flexible wire from the connector (CN101
(5) Short-circuit the laser diode by soldering the land which is provided at the center of the flexible wire for the pickup.
After completing the repair, remove the solder to open the circuit.
), short-circuit the flexible wire by the metal clip.
Pick-up
Short circuit
* Please refer to the SECTION3 DISASSEMBLY method for details.
CN101
DVD SERVO CONTROL BOARD
(No.YD002)1-7
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 Different table of feature
The following table indicates main different points between models HR-XV3EK, HR-XV31EK,HR-XV32EK, HR-XV3EX, HR-XV31EX,
HR-XVS30EK, and HR-XVS30EX.
HR-XV3EK HR-XV31EK HR-XV32EK HR-XV3EX HR-XV31EX HR-XVS30EK HR-XVS30EX
POWER PLUG 3PIN
BODY COLOR PURE SILVER
FRONT PANEL
COVER
REMOCON
COLOUR
VHS PAL/NTSC PB
S-VHS NOT USED
S-VHS ET NOT USED ←←←←USED ←
SQPB USED ←←←←NOT USED ←
RECORDING &
PLAYBACK SPEED
FRONT INPUT VIDEO,AUDIO
REAR L-1 INPUT SCART IN /
COMPORNENT
VIDEO OUT
BROADCASTING
STANDARD
STEREO
DECODER
RF OUT CH/RF OUT
SYSTEM[INITIAL]
VCR PLUS+ VIDEOPLUS+ ←←SHOWVIEW ← VIDEOPLUS+ SHOWVIEW
VPS/PDC NOT USED
OSD LANGUAGES VCR:ENGLISH
WMA(CD-R/RW) NOT USED
ILLUMINATION
COLOR
USED NOT USED USED ← NOT USED USED ←
GRAY ← BLACK GRAY ←←←
on PAL TV with
HiFi
SP/LP ←←←←SP/LP/EP ←
(L/R)
OUT(RGB)
NOT USED ←←←←DVD:Y/Pb/Pr ←
I ←←B/G,D/K ← I B/G,D/K
NICAM ←←NICAM/A2 ← NICAM NICAM/A2
22-69CH,OFF
[AUTO]/I
DVD:ENGLISH/
FRENCH/
GERMANY
BLUE NOT USED BLUE ← NOT USED BLUE ←
←←CEE ← 3PIN CEE
← BLACK PURE SILVER ←←←
←←PAL/MESECAM
(MANUAL) /
NTSC PB on
PAL TV with HiFi
← PAL/NTSC PB
on PAL TV with
HiFi
PAL/MESECAM
(MANUAL) /
NTSC PB on
PAL TV with HiFi
←←←←USED ←
←←←←S-VIDEO,
VIDEO,AUDIO
(L/R)
←←←←SCART IN / OUT
(Y/C,RGB)
←←22-69CH,OFF
[AUTO]/G,K
← 22-69CH,OFF
[AUTO]/I
←
←
22-69CH,OFF
[AUTO]/G,K
←←USED ← NOT USED USED
←←VCR:13
LANGUAGES
DVD:ENGLISH/
FRENCH/
GERMANY
← VCR:ENGLISH
DVD:ENGLISH/
FRENCH/
GERMANY
VCR:13
LANGUAGES
DVD:ENGLISH/
FRENCH/
GERMANY
←←←←USED ←
NOTE :
Mark ← is same as left.
1-8 (No.YD002)
2.2 Service position
This unit has been designed so that the Mechanism an d Main
board assemblies can be removed together from the bottom
chassis. Before diagnosing or servicing the circuit boards, take
out the major parts from the bottom chassis.
2.2.1 How to set the "Service position"
(1) Refer to the disassembly procedure and perform the disas-
sembly of the major parts before removing the Mechanism
assembly.
(2) Remove the screws that fix the Mechanism, Regulator
board assembly to the bottom chassis. If any other screws
are used to fix the boards, remove them also.
(3) Remove the combined Mechanism,Regulator borad and
Main board assemblies.
(4) If any other major parts are used, remove them also.
(5) Connect the wires and connectors of the major parts that
have been removed in steps (1) to (4). (Refer to Fig. 2-2a.)
(6) Place the combined Mechanism, Main board and other
board assemblies upside down.
(7) Insert the power cord plug into the power outlet and then
proceed with the diagnostics and servicing of the board as-
sembly.
Notes:
• Before inserting the power cord plug into the power out-
let, make sure that none of the electrical parts are able
to short-circuit between the workbench and the board
assembly.
• For the disassembly procedure of the major par ts and
details of the precautions to be taken, see "Removing
the major parts".
• If there are wire connections from the Main board an d
Mechanism assemblies to the other major parts, be sure
to remove them (including wires connected to the major
parts) first before performing step (2).
• When carrying out diagnosis and repair of the Main
board assembly in the "Service position", be sure to
ground both the Main board and Mechanism assemblies. If they are improperly grounded, there may be
noise on the playback picture or FDP counter display
may move even when the mechanism is kept in an inoperative status.
• In order to diagnose the playback or recording of the
cassette tape, set the Mechanism assembly to the required mode before placing it upside do wn. If the mechanism mode is changed (including ejection) while it is in
an upside down position the tape inside may be damaged.
• For some models, the mechanism and board assem-
blies are attached by connectors only. When carrying
out a diagnosis or repair of the boards in the "Service
position", make sure that the connectors are not disconnected.
Regulator board assembly
TP111 D.FF
TP4001 CTL.P
TP106 PB FM
TP2253 A.PB FM
TP2254 A.REC FM
Display board assembly
Main board assembly
Jack board assembly
Fig.2-2a
2.3 Jig RCU mode
This unit uses the following two modes for receiving remote control codes.
(1) User RCU mode:Ordinary mode for use by the user.
(2) Jig RCU mode: Mode for use in production and servicing.
When using the Jig RCU, it is required to set th e VCR to the Jig
RCU mode (the mode in which codes from the Jig RCU can be
received). As both of the above two modes are stored in the EEPROM, it is required to set the VCR back to the User RCU mode
each time that an adjustment is made or to check that the necessary operations have been completed.These modes can be set
by the operations described below.
Note:
• Confirm the RCU mode when exchanged parts. Since
some SERVICE PARTS sets the VCR to the Jig RCU
mode as initial setting. Therefore please set the VCR to
the user RCU mode after replacing the EEPROM.
User RCU mode
CH
Jig RCU mode
CH
(ޓnot displayed)
Fig.2-3a User/Jig RCU mode
2.3.1 Setting the Jig RCU mode
(1) Turn on the power.
(2) Press the following remocon keys continuously within 2
seconds " SET UP MENU " → " 2 " → " 8 " → " OK ".
When the VCR is set to the Jig RCU mode, the symbols
( " : " ) in the time display of the FDP are turned off.
(Refer to Fig.2-3a)
(No.YD002)1-9
2.3.2 Setting the User RCU mode
(1) Turn off the power.
(2) Press the "REC" and "PAUSE" buttons of the VCR simul-
taneously. Alternatively, transmit the code "80" from the Jig
RCU.
2.4 Mechanism service mode
This model has a unique function to enter the mechanism into every operation mode without loading of any cassette tape. This
function is called the "Mechanism service mode".
2.4.1 How to set the "Mechanism service mode"
(1) Set the VCR to the Jig RCU mode (the mode in which
codes from the Jig RCU can be received)
(2) Transmit the code "E5" from the Jig RCU.
(3) Release the lug of the Cassette holder and then slid e the
Cassette holder toward the direction where the Cassette
holder is loaded by manually.
(4) The cassette holder lowers and, when the loading has
completed, the mechanism enters the desired mode.
When the VCR is set to the Mechanism service mode, the
symbols ("Timer") in the FDP (LED) are blinked.
2.4.2 How to exit from the "Mechanism service mode"
(1) Unplug the power cord plug from the power outlet.
2.5 Maintenance and inspection
2.5.1 Cleaning
Regular cleaning of the transport system parts is desirable but
practically impossible. So make it a rule to carry out cleaning of
the tape transport system whenever the machine is serviced.
When the video head, tape guide and/or brush get soiled, the
playback picture may appear inferior or at worst disappear, resulting in possible tape damage.
Note:
• Absolutely avoid sweeping the upper drum vertically as
this will cause damage to the video head.
(1) When cleaning the upper drum (especially the video head),
soak a piece of closely woven cloth with alcohol and while
holding the cloth onto the upper drum by the fingers, turn
the upper drum counterclockwise.
(2) To clean the parts of the tape transport system other than
the upper drum, use a piece of closely woven cloth or a cot-
ton swab soaked with alcohol.
(3) After cleaning, make sure that the cleaned parts are com-
pletely dry before using the cassette tape.
2.5.2 Lubrication
With no need for periodical lubrication, you have only to lubricate
new parts after replacement. If any oil or grease on contact parts
is soiled, wipe it off and newly lubricate the parts.
Note:
• See the "mechanism assembly" diagram of the "parts
list" for the lubricating or greasing spots, and for the
types of oil or grease to be used.
2.5.3 Suggested servicing schedule for main components
The following table indicates the suggested perio d for such service measures as cleaning, lubrication and replacement. In practice, the indicated periods will vary widely according to
environmental and usage conditions. However, the indicated
components should be inspected when a set is b rought for service and the maintenance work performed if necessary. Also
note that rubber parts may deform in time, even if the set is not
used.
System Parts name
Operation hours
1000H 2000H
Drum assembly C,X X
A/C head C,X C,X
Pinch roller arm assembly C C
Tape
transport
Full erase head C C
Tension arm assembly C C
Capstan motor (Shaft) C C
Guide arm assembly C C
Capstan motor X
Capstan brake assembly X
Main brake assembly X
Drive
Belt (Capstan) X X
Loading motor X
Clutch unit X
Worm gear X
Control plate X
Other Rotary encoder X
C : Cleaning
X : Inspection or Replacement if necessary
1-10 (No.YD002)
A/C head
Video heads
Fig.2-6a
SECTION 3
DISASSEMBLY
3.1 Removing the major parts
3.1.1 Destination of connectors
Two kinds of double-arrows in connection tables respectively
show kinds of connector/wires.
: The connector of the side to remove
CONN. No. PIN No.CONNECTOR
WR2a
WR2b
Main CN101
Main CN103
Destination of connectors
CONN. No. PIN No.CONNECTOR
WR2a
WR2b
WR2c
WR3a
WR3b
CN5302
(CN501)
CN7301
(CN502)
WR6a
WR6b
Main
Main
Main
Main
Drum
assembly
Regulator
Main
Regulator
Regulator
3.1.2 How to read the procedure table
This table shows the steps for disassembly of the externally furnished parts and board assemblies. Reverse these steps when
re-assembling them.
Step/
Loc No.
[1] Top cover 3-1a
Part Name
Bracket 2(S1c)
: Wire: Flat wire : Board to board (B-B)
Digital CN761
Digital CN762
CN7104
CN3102
CN3103
CN2001
CN5302
CN7301
CN5303
CN5301
Jack
Display
Display
A/C head
Main
DVD
servo control
DVD
servo control
Main
Main
Fig.
No.
4(S1a),(S1b),3(L1a), <Note 1a>
2(SD1a),(P1a),(W1a),
CN1(WR1a),
----------------------------------------
CN7191
CN7003
CN7004
CN1
CN501
CN502
CN5313
CN5311
Point Note
40
10
11
14
14
6
9
22
22
11
11
3.1.3 Disassembly procedure
Step/
Loc No.
[1]
[2]
[3]
[4]
[5]
[6]
[7]
Part Name
Top cover
Front panel assembly
(Display board assembly)
(Jack board assembly)
Mechanism assembly
(Drum assembly)
(Inertia plate)
(Roller arm assembly)
DVD unit
(Bracket)
Rear cover
Regulator board assembly
Main board assembly
Fig.
No.
3-1d
3-1a
3-1d
3-1b
3-1c
3-1d
3-1d
3-1d
3-1d
3-1d
Point Note
6(S1a)
4(L2a),5(L2b),2(S2a)
CN7104(WR2a),
CN3102(WR2b),
CN3103(WR2c),
CN2001(WR3a)
3(S3a),(S3b)
--------------------------
CN(WR3b)
(S3c),(S3d),(S3e)
--------------------------
4(L3a)
--------------------------
(P3a),(L3b)
3(S4a),(L4a),(S4b)
2(S4c),CN5302(CN501)
CN7301(CN502)
7(S5a),(S5b),3(L5a)
3(S6a)
CN5303(WR6a),
CN5301(WR6b)
2(S7a)
<Note 2a>
<Note 2b>
<Note 2a>
<Note 3a>
<Note 3b>
<Note 3c>
<Note 2a>
< Note 2a >
• Be careful not to damage the connector and wire etc. during
connection and disconnection.
• When connecting the flat wire to the connector, be careful with
the flat wire direction.
< Note 2b >
• When reattaching the Front panel assembly, make sure that
the door opener of the Side frame (R) is lowered in position prior to the reinstallation.
• When reattaching the Front panel assembly, pay careful attention
to the switch lever of the Front panel assembly not to make it
touch the switch knob of the Main board assembly from the side.
• When reattaching the Front pa nel assembly, lift the Casse tte
door slightly.
(1) (2) (3) (4) (5)
(1) Order of steps in Procedure
When reassembling, perform the step(s) in the reverse order.
These numbers are also used as the identification (loca-
tion) No. of parts Figures.
(2) Part name to be removed or installed.
(3) Fig. No. showing procedure or part location.
(4) Identification of part to be removed, unhooked, unlocked,
released, unplugged, unclamped or unsoldered.
P= Spring, W= Washer, S= Screw, L= Locking tab, SD=
Solder, CN**(WR**)= Remove the wire (WR**) from the
connector (CN**).
Note:
• The bracketed ( ) WR of the connector symbol are
assigned nos. in priority order and do not correspond to those on the spare parts list.
(5) Adjustment information for installation
Door
opener
Side
frame(R)
Switch
knob
Switch
lever
Fig.3-1a
< Note 3a >
• When reattaching the Mechanism assembly, secure the
screws (S3a to S3b) in the order of 1,2,3.
< Note 3b >
• When reattaching the Mechanism assembly, be sure to ali gn
the phase of the Rotary encoder on the Main board assembly.
• When reattaching the Mechanism assembly, set the “Mechanism assembling mode”. [See “MECHANISM ASSEMBLY
SERVICE MANUAL (No. 86700)”.]
• When reattaching the Mechanism assembly to the Main board
assembly, take care not to damage the sensors and switch on
the Main board assembly.
(No.YD002)1-11
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