Signal systemPAL colour signal, 625 lines/50 fields
Recording systemDigital Component Recording
FormatDV format (SD mode)
CassetteMini DV Cassette
Maximum recording time
(SP)(SP): 80 min. with M-DV80ME cassette
(LP)(LP): 120 min. with M-DV80ME cassette
Audio recording systemPCM 48 kHz, 16 bit (2 ch)/32 kHz, 12 bit (4 ch)
ACCESSORIES
Provided accessoriesAudio/Video cable,3-pin conversion plug (for UK use only),Infrared remote control unit,”R6” battery x 2
• 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.
• This unit plays back and records PAL and SECAM signals in PAL format. NTSC signals can also be played back on the DVD deck.
• This product incorporates copyright protection technology that is protected by U.S. patents and other intellectual property rights. Use of this copyright protection technology must be authorized by Macrovision, and is intended for home and other limited viewing uses only unless otherwise
authorized by Macrovision. Reverse engineering or disassembly is prohibited.
Output: 0.4 mW
Output: 1.0 mW
Corresponding to copy protection
1-2 (No.YD091)
SECTION 1
r
PRECAUTION
1.1SAFTY 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 sleeve
Conductors extended
Fig.1-1-7
(No.YD091)1-3
1.1.2 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 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
Z0.1 ohm
Z0.5 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 m m
)
d' 8 m m (Power cord
d' 6 m m (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.YD091)
1.2Hard Disk Drive (HDD) Handling Precautions
The HDD is a precision device for use in reading and writing a large amount of data on or from a disk rotating at a high speed. If it is
not handled carefully, either abnormal operation may result or it may not be possible to read data. The HDD is sensitive to the following
items and special care is required in safeguarding against them when handling an HDD. Also take care in handling a set incorporating
an HDD.
(1) Vibrations and impacts
(2) Static electricity
(3) Rough handling
1.2.1 Handling in transport, etc.
• Be sure to place the HDD in the manufacturer's specified package carton before transport.
• When receiving a package containing an HDD, check that the
package carton is not damaged (such as having holes in the
carton, crushed corners, etc.).
• Do not impact the packaging carton when loading or unloading
HDD
Do not throw or
drop packages.
it.
• It is not permitted to use the inner package carton only for
transporting an HDD.
• Do not stack package cartons one upon another.
Be sure to package and
transport the HDDs correctly.
1.2.2 Handling an HDD in the stand-alone status
• When handling an HDD on a hard workbench, place an antistatic mat (rubber sheet) or similar object on the hard surface
(to prevent any impacts occurring between the HDD and
bench).
• Do not stack the HDDs one upon another.
• Do not knock an HDD with a hard object (such as a screwdriver).
• Do not place an HDD on its side panel without using a support
(do not place an HDD in an unstable position).
1.2.3 Handling the installation of an HDD
• Place antistatic mats or similar sheets on all of the surfaces on which work is conducted or when the HDD is transported.
• Do not permit the HDD to knock against the set's brackets.
• When screwing the brackets, be careful not to knock the HDD. When using a power screwdriver, use a low-shock model and arrange
the tightening torque properly.
• When mounting an HDD in a main body, take care not to apply excessive force to the brackets.
(No.YD091)1-5
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1Service position
This unit has been designed so that the Mechanism and 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.
2.1.1 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, Main board as-
sembly to the bottom chassis. If any other screws are used
to fix the boards, remove them also.
(3) Remove the combined Mechanism, HDD, DVD unit,
switching regulator, digital, DV jack, junction 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. 2-1a.)
(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 parts and
details of the precautions to be taken, see "Removing
the major parts".
• If there are wire connections from the Main board and
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 down. 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.
MAIN board assembly
TP3901
TP3902
TP3906
TP3907
TP3908
TP3903
TP3905
TP3904
SWITCHING
REGULATOR
board assembly
JUNCTION
board assembly
DIGITAL
board
assembly
DV JACK
board
assembly
DVD
DRIVE
UNIT
DISPLAY / SWITCH
board assembly
HDD
Fig.2-1a
MAIN
board
assembly
MDA
board
assembly
DV MAIN
board
assembly
OPERATION / JACK
board assembly
1-6 (No.YD091)
2.2Jig 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 the unit 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 unit 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:
• When the unit is set to Jig RCU mode and when the unit
is under Jig RCU mode, the remote control unit attached
to product operates only in "Remote Control Code 1".
Since the unit is in "Remote Control Code 3" when it is
shipped and just after its batteries are changed, "Remote Control Code 3" needs to be changed to "Remote
Control Code 1."
• Confirm the RCU mode when exchanged parts. Since
some SERVICE PARTS sets the unit to the Jig RCU
mode as initial setting. Therefore please set the unit to
the user RCU mode after replacing the EEPROM.
User RCU mode
CH
Jig RCU mode
CH
( blinked)
Fig.2-2a User/Jig RCU mode
2.2.1 Changing Remote Control Code
(1) Slide the TV/DVD switch to DVD.
(2) Press the number key "1" of the remote control unit while
pressing the "SET UP" button of the remote control unit.
Then,press the "ENTER" button, and then release the
"SET UP" button.
(3) Press the "POWER" button on the unit to turn off the unit.
(4) Press the "PLAY" button on the unit for over 5 seconds
while the unit is turned off. The code currently set appears
on the front display panel.
(5) Press the "STOP" button on the remote control to change
the unit’s code. When FDP indicator displays "DVD1," it
means that the Remote Control Code has been changed to
"1."
Note:
When "POWER SAVE" is set to "ON", it is not possible to
change the remote code.
2.2.2 Setting the Jig RCU mode
(1) Turn on the power.
(2) Press the "DV/HDD/DVD" select button repeatedly on the
unit so that the DVD lamp lights up on the unit.
(3) Press the following remocon keys continuously within 2
seconds " SET UP " → " 2 " → " 8 " → " ENTER ".
When the unit is set to the Jig RCU mode, the symbols
( " : " ) in the time display of the FDP are blinked.
(Refer to Fig.2-2a User/Jig RCU mode)
2.2.3 Setting the User RCU mode
(1) Turn off the power.
(2) Press the "REC" and "PAUSE" buttons of the unit simulta-
neously. Alternatively, transmit the code "43-9D" from the
Jig RCU.
(No.YD091)1-7
DISASSEMBLY
3.1Removing 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
WR3a
WR3b
WR4a
WR4b
WR4c
CN7108
(CN1001)
CN7109
(CN1002)
CN7121
(CN1802)
WR5a
WR6a
WR6b
WR6c
WR6d
WR8a
WR8b
WR8c
WR8d
WR8e
WR9a
WR11a
WR11b
WR11c
WR11d
WR12a
WR12b
WR12c
Main
Main
Junction
Digital
Digital
Digital
Junction
Junction
Junction
Junction
Junction
SW. REG
SW. REG
SW. REG
SW. REG
Junction
Main
Main
Main
Main
Main
DV Main
DV Main
DV Main
DV MDA
Main
Main
Main
: Wire: Flat wire: Board to board (B-B)
Digital CN761
Digital CN762
CN3104
CN3102
CN5503
CN2201
CN2101
CN1405
CN5502
CN7108
CN7109
CN7121
CN7126
CN5304
CN5303
CN5301
CN5302
CN7127
CN3103
CN2602
CN701
CN901
CN3104
CN1502
CN4001
CN1501
CN5501
CN5404
CN2601
CN501
Operation/jack
Display/switch
DVD unit
DVD unit
HDD
D-SUB
Digital
Digital
Digital
Digital
DV jack
Junction
HDD
Main
Fan motor
DV Main
Junction
Junction
Junction
Junction
DV Main
DV mechanism sensor
DV drum motor
DV MDA
Main
DV Main
DV Main
DV Main
CN7201
CN7001
CN701
CN101
CN7401
CN1003
CN1001
CN1002
CN1802
CN4104
CN5501
CN5402
CN2002
CN7102
CN8001
CN7123
CN7107
CN1505
CN5506
CN5403
CN1001
CN3701
CN3501
SECTION 3
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.
40
10
15
15
8
40
40
4
6
28
20
14
6
19
4
15
2
6
19
11
4
13
7
15
8
20
5
8
8
7
[1] Top cover3-1a
(1)(2)(3)(4)(5)
(1) Order of steps in Procedure
(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,
• 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 attaching the Front panel assembly, make sure that the
door opener of DV deck is in the down position.
< Note 3a >
• When reattaching the bracket(DV MAIN), secure the screws
(S13a) in the order of 1,2,3.
< Note 3b >
• When reattaching the Main board assembly, secure the
screws (S14a) in the order of 1,2,3.
Main board assembly
(WR12a)
<Note 2a>
(WR11d)
CN5403
CN3501
DV
Main board assembly
CN5501
CN3104
CN2002
<Note 2b>
D-SUB board assembly
CN7401
(WR12b)
<Note 2a>
(WR12c)
<Note 2a>
CN2601
CN501
CN5404
CN3701
CN1001
CN1505
CN1501
CN4001
(WR11c)
<Note 2a>
(WR8e)
<Note 2a>
TO CN1405
ON DIGITAL
BOARD
CN701
(WR8d)
<Note 2a>
(WR9a)
<Note 2a>
CN901
(WR8c)
(WR8b)
CN3102
(WR6d)
CN5402
CN2602
CN3014
CN3103
CN5302
(WR6c)
<Note 2a>
CN5301
CN7107
CN7123
CN8001
(WR3a)
CN7102
DRIVE UNIT
(WR8a)
FAN
CN5001
Switching regulator
board assembly
(WR6b)
CN5303
(WR6a)
<Note 2a>
CN5304
CN5501
Junction board assembly
(WR4c)
CN5503
CN1003
(WR3b)
<Note 2a>
CN2201
Digital board
assembly
CN7127
DV jack board assembly
CN5502
CN2101
(WR5a)
CN7126
(WR4a)
<Note 2a>
TO CN7401
ON D-SUB
BOARD
CN1405
(WR4b)
<Note 2a>
CN4104
Operation/jack board assembly
(WR2a)
<Note 2a>
CN7201
NOTE) INSERT FFC WIRE
TO THE CONNECTOR BEFORE
ATTACHING TO FRONT PANEL.
(WR2b)
<Note 2a>
BOTTOM SIDE
Display/switch board assembly
CN7001
TOP SIDE
Fig.3-1a
(No.YD091)1-9
(S1a)
(S1a)
(S1a)
(S1a)
[1]Top cover
(S1a)
(S1a)
(S1a)
[13]Bracket(DV MAIN)
[14]Main board assembly
Bottom chassis
(L2a)
(L2a)
(S13a)
(S14a)
1
[12]Bracket
(S13a)
(S12b)
1
3
j
(S12a)
(S14a)
3
2
a'
b
(S1a)
[9]D-SUB board assembly
[11]DV mechanism assembly
(S11a)
CN4001
CN1502
2
(S12a)
(S12b)
[12]DV main board assembly
(S12b)
(S13a)
J901
J903
(S14a)
[5]DV jack board
c
e
[10]Rear cover
(L10a)
(S11a)
(WR11b)
<Note 2a>
(S11a)
(WR11a)
<Note 2a>
[3]DVD unit
(S3a)
[6]Switching regulator
board assembly
[7]HDD
(S7a)
assembly
c
(S5a)
(S4a)
(S4a)
(S10b)
(L10a)
(S3b)
(S6a)
c
(S7b)
(S4a)
(S9a)
(S3b)
(S3a)
CN5302
CN5001
(S7a)
c
[7]Bracket(HDD)
(S10b)
f
(S7b)
(S10a)
(L10a)
(S3b)
[3]Bracket
(S6a)
(S7b)
(S3a)
(S3a)
[7]Sheet
(S7a)
(L2b)
(L2b)
1-10 (No.YD091)
[2]Front panel assembly
(L2b)
(S2a)
(S8a)
[4]Digital board
assembly
[8]Junction board assembly
Fig.3-1b
3.2DVD Drive unit section
3.2.1 Remove the top cover and tray (See figure 1, figure2, figure3, figure4)
(1) The part a on the reverse side of a DVD drive unit is made
to slide in the direction of an arrow. (A tray ejects a few.)
(2) Remove the four screws A attaching the top cover.
(3) Hooks b are removed, and the top cover is removed.
(4) The tray is drawn out forward.
(5) Remove the two screws B attaching the shaft guide, and
hook c is removed.
(6) It draws it out while lifting the tray in the direction of the ar-
row.
A
Part a
Hook b
A
A
Fig.2
Top cover
A
Hook b
Fig.1
Hook c
B
Fig.3
Shaft guide
B
Tray
Fig.4
(No.YD091)1-11
3.2.2 Reassembly the tray (See figure 5)
(1) The slide cam is done in the slide in the direction of the ar-
row.
(2) The shaft guide is done in the slide in the direction in the
back.
(3) The left side of the tray is inserted in the rail of the loading
base, and the shaft guide is built in.
(4) Please push the tray, and confirm whether the tray is nor-
mally good to the close position at the slide by manual.
3.2.3 Remove the traverse mechanism assembly (See figure 6, figure 7)
• Prior to performing the following procedure, remove the top
cover, tray.
(1) Disconnect the FFC wire from connector on the pick-up
unit.
ATTENTION:
The laser diode of "pick-up" might be destroyed by static
electricity. Please work after installing the wristband. In
addition, please do not touch in each part, the terminal,
and the laser diode terminal on the substrate of the pickup unit. Never
(2) Disconnect the FFC wire from connector CN103
on the servo control board.
(3) Remove the four screws C attaching the traverse mecha-
nism assembly.
, CN104
CN105
Shaft guide
Slide cam
Fig.5
Servo control board
CN103
C
Traverse mechanism assembly
C
C
Hook dHook d
CN102
CN104
DD
Fig.7
1-12 (No.YD091)
Pick-up unitConnector
Fig.6
3.2.4 Remove the servo control board (See figure 7)
(1) Disconnect the FFC wire from connector CN102
, CN105 on the servo control board.
CN104
(2) Remove the two screws D attaching the servo control
board.
(3) Hooks d is removed, and the servo control board is re-
moved.
3.2.5 Remove the loading motor (See figure 8, figure 9)
• Prior to performing the following procedure, remove the top
cover, tray.
(1) Remove the solder part e soldered on the switch board.
(2) A belt is removed.
(3) Remove the two screws E attaching the loading motor.
, CN103,
Loading
motor
Part e
Switch board
Fig.8
E
Belt
Fig.9
(No.YD091)1-13
SECTION 4
ADJUSTMENT
4.1Before adjustment
4.1.1 Precautions
(1) Observe the specified screw tightening torque when
attaching parts. The torque should be 0.04 Nm (0.4 kgfcm)
unless otherwise specified.
(2) Always disconnect the power supply unit before proceed-
ing to solder or attach parts.
(3) When plugging or unplugging a wire, be careful not to
damage the connector.
(4) When replacing a part, be careful not to damage other
parts or to mistakenly attach parts.
4.1.2 Tools required for adjustments
TORQUE DRIVER
12
YTU94088
Tool for replacing tip IC
4
PTS40844-2
BIT
YTU94088-003
Tool for installing slit washer
3
YTU94121A
Table 4-1-1
4.1.3 Disassembly and assembly procedures
The following table shows the steps for assembling or disassembling the mechanism parts. Read the following descriptions carefully before actual assembly/disassembly operations.
(1) : Order of disassembly steps. Reverse this order when as-
sembling.
(2) : Name of the disassembled/assembled part.
Surface where the disassembled/assembled part is
(3) :
mounted. T = Top. B: Bottom.
(4) : Number of disassembly drawing.
(5) : Parts to be removed in disassembly/assembly, such as
screws, washers and springs, and the points.
SymbolName & Point
SScrew
WWasher
PSpring
*Connector, lock(L), soldering(SD),
shield, etc.
[Example] • (W1) = Remove the washer W1.
• (P1) = Remove the spring P1.
(6) : Notes for disassembly/assembly.
(7) : For the phase alignment in disassembly/assembly and
the parts which require phase adjustments after assembly,
see "4.7 Mechanism phase check/adjustment".
4.1.4 Screws and washers used in disassembly/assembly
of the mechanism assembly
Table 4-1-2 shows the symbols and part numbers of the screws
and washers used in the mechanism assembly.
When disassembling or assembling the mechanism assembly,be sure to attach screws and washers correctly by referring
to the following table.
The disassembly and assembly of the mechanism assembly should usually be performed in the ASSEMBLY mode.(Table 4-2-1)
Note that the mechanism is in the cassette in (C-IN) mode when the mechanism assembly is taken out of the set and that the C-IN
mode should be switched to the ASSEMBLY mode in this case.
To set the ASSEMBLY mode, apply 3 V DC to the electrodes on the upper part of the loading motor as shown in Fig. 4-2-7.
MODE
PARTS
[1]
ROTARY
ENCORDER
R. ENC-20
MAIN CAM GEAR0
[2]
[3]
36
C-IN
ASSEMBLY
17
S. FF
30.33
36.33
87
0
15
33.33
40
LOADING END
169.66
166.66
140
PLAYREVSTOPFF/REW
270.33
276.33
223.66
226.66
185
229.66
273.33
220
303.66
306.66
245
190.33
193.33
160
196.33
Table 4-2-1
4.2.2 Mechanism modes
The mechanism has 6 modes as shown in Table 4-3-1. The current mode can be confirmed by the positioning of the " " marking on
the sub-cam gear and the " " marking on the mechanism. See the following figures (Figs. 4-2-1 to -6) for details.
Note:
• This mechanism assembly has another ASSEMBLY mode. However, this mode cannot be identified from the markings
because it corresponds to an intermediate position between the C-IN ( C ) mode and S-FF ( H ) mode. This mode can be
confirmed by the rotary encoder phase. See Fig. 4-2-7.
Once the reel cover assembly has been removed, the
parts located below it tend to slip out easily: Be careful.
Note 3b:
When attaching these screws, screwing order (a),(b),( c)
<Note3a>
[3]
(L6)
(L6)
Fig.4-5-3
4. [5] Pinch roller arm assembly/[6] Sub brake assembly/[7] Band arm plate sub assembly/ [8] Tension arm sub assembly
<Note 4c>:
How to install the spring
Step 1
Hook [a]
[8]
Step 2
Hook [b]
Fig.4-5-4a
(P2)
14
(S3)
(P3)
[7]
(W2)
<Note4b>
NOTE4c
(L9)
(W1)
[6]
(P1)
[5]
<Note4a>
Fig.4-5-4
(W1)
(L8)
Step 3
(L7)
sub brake (Take up)
spring hooked
reverse-side
OKNG
Fig.4-5-4b
Note 4a:
When attaching this part, fit it in the boss (L7) on the
charge arm assembly.
Note 4b:
When attaching or removing this part, take care of the
handling of the band section.
Note 4c:
After fitting the spring on the shaft, engage it with hook
[a] first then with hook [b] .
After attaching it, set it to the positioning shown in
"Step 3" and confirm that band arm plate sub assembly
[7] can be rotated in the direction of the arrow as shown
below.
(No.YD091)1-21
5. [9] Exit guide arm assembly/ [10] Swing arm assembly
[9]
[10]
<Note5a>
(W1)
Note 5a:
Exit guide arm assembly phase alignment.
Exit guide arm assembly
This protrusion is
combined to
the dent of Charge
arm assembly.
Charge arm assembly
Gear alignment
Exit guide arm
assembly
Arm gear 2
assembly
Fig.4-5-5a
Fig.4-5-5
6. [11] Sub deck assembly/ [12] Main brake (Supply) assembly/[13] Main brake (Take up) assembly
Note 6a:
When attaching the sub deck assembly, make sure to
adjust the phase of the control plate.
Main brake (Supply)
OKNG
Fig.4-5-6a
(P4)
(P5)
[13]
[12]
(
L10
15
(S2)
16
(S2)
)
(
)
L11
<Note6a>
18
(S2)
17
(S2)
[11]
Main brake (Take up)
spring hooked
reverse-side
Twisted spring
1-22 (No.YD091)
Fig.4-5-6
OKNG
Fig.4-5-6b
7. [14] Reel disk assembly (Supply) / [15] Reel disk assembly (Take up) / [16] Prism / [17] Control plate
[14]
21
(S2)
[11]
20
(S2)
19
22
(S2)
[16]
Note 8a:
When attaching, set the alignment markings of the two
gears so that the markings face opposite to each other.
Align the phase of the rotary encoder assembly [34],
then attach it by aligning the phase hole of the
mechanism assembly.
Fig.4-5-9a
Note 10a:
After attaching (W1), confirm that pushes [26] from the
top and hit to MAIN DECK. If there are a rattling or inclination in [26] , reconfirm the attachment of (P6). (Take
care to the oblique insertion of (P6).)
Note 10b:
Attach (P6) straight for it which does not get on on the
flange of [28]
Phase alignment
Mark (Red)
[26]
<Note10a>
[27]
[28]
1-24 (No.YD091)
(W1)
(P6)
"A"
Fig.4-5-10
(W1)
[25]
11. [29] Tension control arm assembly/ [30] Brake control arm assembly / [31] Charge arm assembly
(
L16
)
(W1)
Note 11a:
How to attach the tension control arm assembly [29] /
Brake control arm assembly [30] .
[30]
[34]
(
<Note11a>
(
)
L15
L17
)
[31]
<Note11b>
[30]
[29]
Boss
[29]
(Phase alignment)
[35]
Align the phase of the main cam [35], then attach it by
fitting the bosses into the cam slot.
Fig.4-5-11a
Note 11b:
How to attach the charge arm assembly [31]
[31]
Fig.4-5-11
[38]
12. [32] Connect gear 2 / [33] Connect gear 2
[39]
[32]
27
(S2)
28
(S2)
[33]
Phase alignment
Boss
(Phase alignment)
Align the phase of the sub cam [38], then attach it by
fitting the boss into the cam slot.
Fig.4-5-11b
Fig.4-5-12
(No.YD091)1-25
13. [34] Rotary encoder assembly / [35] Main cam / [36] Arm gear 1 assembly / [37] Centering arm assembly
Note 13a:
How to attach the rotary encoder assembly [34].
Collar
<Note13b>
[36]
<Note13a>
[34]
[37]
(
)
L18
<Note13c>
29
(S2)
(S2)
<Note13b>
Fig.4-5-13
[34]
30
Mark (colored : red)
[35]
(W1)
[35]
<Note13b>
Phase alignment
Align the phase of the main cam [35],then attach it by
placing the (red) coloured markings (on 2 gear teeth)
within the encircled area.
Fig.4-5-13a
Note 13b:
How to attach the main cam [35] .
Boss
Phase alignment
[35]
Boss
[36]
Phase alignment
[37]
Phase alignment
Align the phases of the arm gear 1 assembly [36] and
centering arm assembly [37],then attach the arm gear 1
assembly [36]/centering arm assembly [37] by fitting the
bosses into the lower cam slot,and fit the slit washer.
Fig.4-5-13b
Note 13c:
How to remove the centering arm assembly [37] The
center arm assembly is located behind the mechanism
assembly when the phase is aligned correctly. The center arm assembly can be removed by displacing it in the
direction of the arrow.
(L18)
[37]
Phase alignment
Fig.4-5-13c
1-26 (No.YD091)
14. [38] Sub cam / [39] Arm gear 2 assembly / [40] Clutch lock lever assembly
Note 14a:
How to attach the sub cam [38].
31
(S2)
<Note14a>
<Note14a>
[38]
[40]
Phase alignment
[38]
Boss
[39]
Phase alignment
[40]
<Note14b>
(
)
L19
Fig.4-5-14
15. [41] Capstan motor / [42] Drum base deck
32
(S2)
33
(S2)
34
(S2)
[42]
<Note14a>
[39]
Phase alignment
Align the phases of the arm gear 2 assembly [39] and
clutch lock lever assembly [40],then attach them by fitting
the boss into the lower cam slot and tighiten the screws.
Fig.4-5-14a
Note 14b:
How to remove the clutch lock lever assembly [40] L19
is located behind the mechanism assembly when the
phase is aligned correctly. The clutch lock lever assembly can be removed by displacing it in the direction of
the arrow.
Phase alignment
[40]
(L19)
Adjust nut
Fig.4-5-15
Fig.4-5-14b
[41]
(P7)
(No.YD091)1-27
4.6List of procedures or disassembly
[24]
[23]
[17]
29
(S2)
[34]
[7]
(P3)
[12]
[29]
(W2)
[21]
30
(S2)
25
(S2)
[20]
Collar
14(S3)
[8]
26
(S2)
(W1)
[27]
[13]
[28]
(S2)
[35]
[37]
[26]
(P6)
16
[14]
(W1)
[32]
(S2)
[30]
[22]
15
[11]
33
(S2)
(W1)
[15]
27
(S2)
32
(S2)
Adj. nut
(P7)
28
(S2)
[33]
19
(S2)
[16]
34
(S2)
(W1)
[6]
17
(S2)
(S2)
[42]
[18]
18
(W1)
[25]
21
(S2)
31(S2)
[19]
[41]
[38]
[10]
20
(S2)
[4]
(S2)
23
(S2)
12
(S2)
(S2)
[31]
22
24
8(S2)
[5]
9(S2)
(S2)
10
4
(S2)
(W1)
(S2)
6(S2)
11
(S2)
[3]
[9]
13
7(S2)
[2]
3
(S2)
5
(S2)
[1]
(W1)
1-28 (No.YD091)
[40]
[36]
[B]
Fig.4-6-1
[39]
4.7Mechanism phase check/adjustment
See Fig 4-7-1.
[22]
[34]
Rotary encoder assembly
See Figs. 4-5-9a and
4-5-13a.