JVC HR-XV1EU-R User manual

COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD
This service manual is printed on 100% recycled paper.
SERVICE MANUAL
No.82947
November 2002
HR-XV1EU-R
HR-XV1EU-R V14PV1
DVD-ÔÎeep Hi-Fi ÍacceÚÌêÈ ÇËÀeoÏaÖÌËÚoÙoÌ
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DIGITAL VIDEO

TABLE OF CONTENTS
Section Title Page Section Title Page
Important Safety Precautions
INSTRUCTIONS
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTSAND P.C.BOARDS ............... 1-1
1-1 TOP CABINET AND FRONT CABINET ............................ 1-1
1-2 FLAP .................................................................................. 1-1
1-3 DECK CD AND DVD PCB .................................................1-1
1-4 POWER PCB .....................................................................1-2
1-5 VCR DECK ........................................................................1-2
1-6 VCR PCB ...........................................................................1-2
2. REMOVAL OF VCR DECK PARTS.........................................1-3
2-1 TOP BRACKET..................................................................1-3
2-2 CASSETTE HOLDER ASS’Y.............................................1-3
2-3 CASSETTE SIDE L/R ........................................................1-3
2-4 LINK UNIT .........................................................................1-3
2-5 LINK LEVER / FLAP LEVER .............................................1-3
2-6 LOADING MOTOR / WORM..............................................1-4
2-7 TENSION ASS’Y................................................................1-4
2-8 T BRAKE ARM / T BRAKE BAND......................................1-5
2-9
S REEL / T REEL / IDLER ARM ASS’Y / IDLER GEAR .............. 1-5
2-10
CASSETTE OPENER / PINCH ROLLER BLOCK / P5ARM ASS’Y............. 1-6
2-11 A/C HEAD ........................................................................1-6
2-12 FE HEAD .........................................................................1-6
2-13 CYLINDER UNITASS’Y ..................................................1-6
2-14 CAPSTAN DD UNIT.........................................................1-7
2-15
MAIN CAM / PINCH ROLLER CAM / JOINT GEAR ............ 1-7
2-16 LOADING GEAR S/T UNIT..............................................1-7
2-17
CLUTCH ASS’Y / RING SPRING / CLUTCH LEVER / CLUTCH GEAR ............... 1-8
2-18
CASSETTE GUIDE POST / INCLINED BASE S/T UNIT / P4 CAP.............. 1-8
3.
REMOVALAND INSTALLATION OF FLAT PACKAGE IC ........... 1-9
REMOVAL................................................................................1-9
INSTALLATION ......................................................................1-10
KEY TO ABBREVIATIONS ...................................................... 1-11
SERVICE MODE LIST..............................................................1-13
WHEN “N” IS ALWAYS BEING DISPLAYED ON THE TV MONITOR ............. 1-13
PARENTAL CONTROL - RATING LEVEL 4-DIGIT SECURITY CODE CANNCELLATION ................ 1-13
WHEN REPLACING EEPROM(MEMORY) IC .........................1-14
PREVENTIVE CHECKS AND SERVICE INTERVALS.............1-15
CONFIRMATION OF HOURS USED .......................................1-15
CLEANING ...............................................................................1-15
SERVICING FIXTURES AND TOOLS......................................1-16
MECHANISM ADJUSTMENT PARTS LOCATION GUIDE............ 1-16
MECHANICAL ADJUSTMENT ................................................1-17
TAPE REMOVAL METHODAT NO POWER SUPPLY ..........1-17
DISC REMOVAL METHODAT NO POWER SUPPLY...........1-17
1. CONFIRMATION AND ADJUSTMENT .................................1-17
1-1
CONFIRMATION AND ADJUSTMENT OF TENSION POST POSITION .............. 1-17
1-2 CONFIRMATION OF PLAYBACK TORQUE AND
BACK TENSION TORQUE DURING PLAYBACK...........1-17
1-3 CONFIRMATION OF VSR TORQUE...............................1-17
1-4 CONFIRMATION OF REEL BRAKE TORQUE................1-18
2. CONFIRMATION AND ADJUSTMENT OF TAPE
RUNNING MECHANISM .................................................. 1-18
2-1 GUIDE ROLLER ..............................................................1-18
2-2
CONFIRMATION AND ADJUSTMENT OF AUDIO/CONTROL HEAD ................ 1-19
2-3
TAPE RUNNING ADJUSTMENT(X-VALUE ADJUSTMENT) ................. 1-19
ELECTRICAL ADJUSTMENTS ...............................................1-20
1. BASIC ADJUSMENT ............................................................1-20
1-1 SWITCHING POINT ........................................................1-20
ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE ............ 1-20
IC DESCRIPTIONS ..................................................................1-21
SERVO TIMING CHART ..........................................................1-32
MECHANISM TIMING CHART.................................................1-33
TROUBLE SHOOTING GUIDE ................................................1-34
(VCR SECTION) ....................................................................1-34
(DVD SECTION) ....................................................................1-57
CHARTS AND DIAGRAMS
INTERCONNECTION DIAGRAM ............................................2-1
POWER SCHEMATIC DIAGRAM ...........................................2-3
READ CHANNEL SCHEMTAIC DIAGRAM .............................2-5
DSP SCHEMATIC DIAGRAM..................................................2-7
MPEG SCHEMATIC DIAGRAM ..............................................2-9
MEMORY SCHEMATIC DIAGRAM .......................................2-11
AUDIO/VIDEO SCHEMATIC DIAGRAM ...............................2-13
SYSCON1 SCHEMATIC DIAGRAM ......................................2-15
Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM .................2-17
VCR SYSCON SCHEMATIC DIAGRAM ...............................2-19
TUNER\/JACK SCHEMATIC DIAGRAM ...............................2-21
REGULATOR SCHEMATIC DIAGRAM.................................2-23
DISPLAY SCHEMATIC DIARAM...........................................2-25
HI-FI/DEMODULATOR SCHEMATIC DIAGRAM ..................2-27
DVD IN/OUT SCHEMATIC DIAGRAM ..................................2-29
SUB MICOM/OSD/VPS SCHEMATIC DIAGRAM .................2-31
OPERATION SCHEMATIC DIAGRAM ..................................2-33
PRINTED CIRCUIT BOARDS VCR(INSERTED PARTS) ................ 2-35
PRINTED CIRCUIT BOARDS VCR(CHIP MOUNTED PARTS) .............. 2-37
PRINTED CIRCUIT BOARDS DVD .......................................2-39
PRINTED CIRCUIT BOARDS POWER / OPERATION............ 2-41
WAVEFORMS .......................................................................2-42
DVD BLOCK DIAGRAM ........................................................2-45
Y/C/AUDIO/HEAD AMP BLOCK DIAGRAM ..........................2-47
MICOM BLOCK DIAGRAM....................................................2-49
REGULATOR BLOCK DIAGRAM..........................................2-51
DISPLAY/OPERATION BLOCK DIAGRAM...........................2-53
TUNER/JACK/HI-FI/21PIN/OSD BLOCK DIAGRAM.............2-55
DVD IN/OUT BLOCK DIAGRAM ...........................................2-57
POWER BLOCK DIAGRAM ..................................................2-59
PARTS LIST
3.1 PACKING AND ACCESSORY ASSEMBLY<M1> ................ 3-1
3.2 FINAL ASSEMBLY<M2> ...................................................... 3-2
3.3 MECHANISM ASSEMBLY<M4> .......................................... 3-4
3.4 ELECTRICAL PARTS LIST.................................................. 3-7
POWER BOARD ASSEMBLY<01>.......................................... 3-7
VCR BOARD ASSEMBLY<03>.................................................3-7
OPERATION BOARD ASSEMBLY<28> .................................3-13
DVD BOARD ASSEMBLY<50>...............................................3-13
REFERENCE
GENERAL SPECIFICATIONS [HR-XV1EU-R] ........................4-1

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.
Fig.1
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 com-
ply 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: Partsin thiscategoryalsoinclude those specifiedtocom-
ply 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.
Power cord
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
compliancewith recognizedcodes pertainingto X-rayemission.
Consequently,when servicingtheseproducts,replacethecath-
ode ray tubes and other parts with only the specified parts.
Under no circumstances attempt to modify these circuits.
Unauthorizedmodification canincrease thehigh voltagevalue
and cause X-ray emission from the cathode ray tube.
12. Crimp type wire connector
Insuchcases aswhen replacingthe powertransformer insets
where the connections between the power cord and power
transformerprimary leadwiresare performedusingcrimp type
connectors, if replacing the connectors is unavoidable, in or-
der 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) Removethe oldconnector bycutting thewires ata point
close to the connector.
Important : Do not reuse a connector (discard it).
Fig.7
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
Fig.4
(3) Align the lengths of the wires to be connected. Insert
the wires fully into the connector.
Connector
Metal sleeve
Fig.5
(4) As shown in Fig.6, use the crimping tool to crimp the
metalsleeve atthe centerposition. Besure tocrimpfully
to the complete closure of the tool.
1
vPrecautions during Servicing
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.
1.25
2.0
5.5
Crimping tool
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
S40888-01

v 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 compli-
ance 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
Confirmspecifieddielectric strengthor greaterbetween power cordplug prongsand 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’) be-
tween soldered terminals, and between terminals and surrounding metallic parts. See table 1
below.
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 accessi-
ble parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and
following table 2.
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.
d'
d
Chassis Power cord,
primary wire
Region
USA & Canada
Europe & Australia
Grounding Impedance (Z)
Z 0.1 ohm
Z 0.5 ohm
≤
≤
AC inlet
Earth pin
Exposed accessible part
Milli ohm meter
Grounding Specifications
Fig. 10
ab
c
V
Externally
exposed
accessible part
Z
Fig. 9
Fig. 8
Clearance Distance (d), (d')
d, d' 3 mm
d, d' 4 mm
d, d' 3.2 mm
1 MΩR 12 MΩ/500 V DC
Dielectric Strength
AC 1 kV 1 minute
AC 1.5 kV 1 miute
AC 1 kV 1 minute
AC Line Voltage
100 V
100 to 240 V
110 to 130 V
110 to 130 V
200 to 240 V
Japan
USA & Canada
Europe & Australia R 10 MΩ/500 V DC
Region
Insulation Resistance (R)
R 1 MΩ/500 V DC
≤
≤
≥≥
≤
≤
≤≤
≤
≤
AC 3 kV 1 minute
(Class 2)
AC 1.5 kV 1 minute
(Class 1)
d 4 mm
d' 8 mm (Power cord)
d' 6 mm (Primary wire)
Table 1 Specifications for each region
a, b, cLeakage Current (i)AC Line Voltage
100 V
110 to 130 V
110 to 130 V
220 to 240 V
Japan
USA & Canada
i 1 mA rms Exposed accessible parts
Exposed accessible parts
Antenna earth terminals
Other terminals
i 0.5 mA rms
i 0.7 mA peak
i 2 mA dc
i 0.7 mA peak
i 2 mA dc
Europe & Australia
Region Load Z
≤
≤
≤
≤
≤
≤
1 kΩ
2 kΩ
1.5 kΩ
0.15 µF
50 kΩ
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.
2S40888-01

DISASSEMBLY INSTRUCTIONS
1-1
1
1
2
Top Cabinet
Front Cabinet
1
1
(A)
2
2
2
2
2
(B)
1
2
333
Operation PCB
CP681
1.
1-1:
Fig. 1-1
REMOVAL OF MECHANICAL PARTS
AND P.C. BOARDS
TOP CABINET AND FRONT CABINET
(Refer to Fig. 2-1)
1.
2.
3.
4.
5.
6.
7.
Remove the 5 screws 1.
Remove the Top Cabinet in the direction of arrow (A).
Disconnect the following connector: (CP681).
Unlock the 8 supports 2.
Remove the Front Cabinet in the direction of arrow (B).
Remove the 3 screws 3.
Remove the Operation PCB in the direction of arrow (C).
1-2: FLAP (Refer to Fig. 1-2)
1.
2.
Open Flap to 90˚ and flex in direction of arrow (A), at the
same time slide in direction of arrow (B).
Then lift in direction of arrow (C).
Fig. 1-2
(A)
Flap
(B)
(C)
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Make the short circuit on the position as shown Fig. 1-3
using a soldering. If you remove the Deck CD with no
soldering, the Laser may be damaged.
Disconnect the following connectors: (CP503,CP8001
and CP8002).
Remove the 4 screws 1.
Remove the Deck Angle in the direction of arrow (A).
Remove the 2 screws 2.
Remove the Front-DVD Shield in the direction of arrow
(B).
Remove the 4 screws 3.
Disconnect the following connectors: (CP2601, CP2602
and CP2603).
Remove the Deck CD in the direction of arrow (C).
Remove the 4 screws 4.
Remove the DVD PCB in the direction of arrow (D).
1-3: DECK CD AND DVD PCB (Refer to Fig. 1-3)
2
NOTE
When the installation of the Deck CD, remove all the solder-
ing on the short circuit position after the connection of Pick
Up PCB and DVD PCB connector.
2DVD PCB
1
24
Deck CD
(C)
(D)
Deck Angle
Front-DVD Shield
3
(A)
(B)
1
1
1
3
3
3
44
4
Make the sort circuit
using a soldering.
Pick Up PCB
Fig. 1-3
CP8002
CP503
CP8001
CP2601
CP2602
CP2603
(C)

DISASSEMBLY INSTRUCTIONS
1-2
1-4: POWER PCB (Refer to Fig. 1-4)
1.
2.
3.
Disconnect the following connector: (CP1701).
Remove the 3 screws 1.
Remove the Power PCB in the direction of arrow.
Fig. 1-4
1-5: VCR DECK (Refer to Fig. 1-5)
1.
2.
3.
4.
Unlock the 2 supports 1and remove the Top Holder.
Remove the 3 screws 2.
Disconnect the following connectors: (CP101, CP102,
CP103 and CP3001).
Remove the AC Head Cover and VCR Deck in the
direction of arrow.
1-6: VCR PCB (Refer to Fig. 1-6)
1.
2.
3.
Remove the screw 1and Fiber Washer.
Remove the 6 screws 2.
Remove the VCR PCB in the direction of arrow.
Fig. 1-5
Fig. 1-6
2
VCR PCB 1
2222
2
Power PCB
1
1
Bottom Plate
1
CP1701
22
2
VCR Deck
CP101
CP102
CP103
CP3001
Top Holder
1
1
AC Head Cover
Fiber Washer

DISASSEMBLY INSTRUCTIONS
1-3
2. REMOVAL OF VCR DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1)
Extend the 2 supports 1.
Slide the 2 supports 2and remove the Top Bracket.
1.
2.
NOTE
After the installation of the Top Bracket, bend the support
1so that the Top Bracket is fixed.
1.
11
2
2
Top Bracket
Main Chassis
Top Bracket
Main Chassis
Fig. 2-1
1.
2.
3.
2-2: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-2)
Move the Cassette Holder Ass'y to the front side.
Push the Locker R to remove the Cassette Side R.
Remove the Cassette Side L.
Fig. 2-2
Link Unit Main Chassis
Main Chassis
Cassette Side L
Cassette Side R
Locker R
1.
2.
3.
2-3: CASSETTE SIDE L/R (Refer to Fig. 2-3-A)
Remove the Locker Spring.
Unlock the 4 supports 1and then remove the Cassette
Side L/R.
Unlock the support 2and then remove the Locker R.
Locker Spring
Cassette Side L
Cassette Side R
Locker R
Cassette Holder
1
1
1
1
2
In case of the Locker R installation, check if the one
position of Fig. 2-3-B are correctly locked.
When you install the Cassette Side R, be sure to move
the Locker R after installing.
NOTE
1.
2.
Locker R
Check if this position
is locked.
Cassette Side R
Fig. 2-3-B
2-4: LINK UNIT (Refer to Fig. 2-4)
1.
2.
3.
Set the Link Unit to the Eject position.
Unlock the support 1.
Remove the (A) side of the Link Unit first, then remove
the (B) side.
Fig. 2-4
(A)
Link Unit
Main Chassis
(B)
Link Unit
Main Chassis
Fig. 2-3-A
2-5: LINK LEVER/FLAP LEVER (Refer to Fig. 2-5)
1.
2.
3.
Extend the support 1.
Remove the Link Lever.
Remove the Flap Lever.
Fig. 2-5
Link Lever
Flap Lever
1

DISASSEMBLY INSTRUCTIONS
1-4
2-6: LOADING MOTOR/WORM (Refer to Fig. 2-6-A)
1.
2.
3.
Remove the screw 1.
Remove the Loading Motor.
Remove the Worm.
Fig. 2-6-A
Loading Motor
Worm
• Screw Torque: 3 ±0.5kgf•cm
Main Chassis
1
NOTE
1.
2.
3.
In case of the Worm installation, check if the value of the
Fig. 2-6-B is correct.
In case of the Loading Motor installation, hook the wire on
the Cassette Opener as shown Fig. 2-6-C.
When installing the wires between Capstan DD Unit and
Loading Motor, connect them correctly as shown Fig. 2-6-D.
Fig. 2-6-B
19.2 ±0.1mm
Safety surface for pressing
of the insert.
2-7: TENSION ASS’Y (Refer to Fig. 2-7-B)
1.
2.
3.
4.
5.
6.
Turn the Pinch Roller Cam clockwise so that the Tension
Holder hook is set to the position of Fig. 2-7-A to move
the Tension Arm Ass’y.
Remove the Tension Spring.
Unlock the 2 supports 1and remove the Tension Band.
Unlock the support 2and remove the Tension Arm Ass’y.
Unlock the support 3and remove the Tension Connect.
Float the hook 4and turn it clockwise then remove the
Tension Holder.
Fig. 2-6-C
Loading Motor
Cassette Opener
Fig. 2-7-B
Tension Band
Tension Connect
Tension Spring Tension Arm Ass’y
Tension Holder
1
1
3
2
4
NOTE
1.
2.
3.
In case of the Tension Band installation, note the direc-
tion of the installation. (Refer to Fig. 2-7-C)
In case of the Tension Band installation, install correctly
as Fig. 2-7-D.
In case of the Tension Connect installation, install as the
circled section of Fig. 2-7-E.
Fig. 2-7-C
Tension Band
Tension Connect
Tension Arm Ass’y
Fig. 2-7-A
Fig. 2-6-D
Pink
Loading Motor
White
Capstan DD Unit
L2
L1
-
+

DISASSEMBLY INSTRUCTIONS
1-5
Fig. 2-7-D
[OK]
[NG]
Tension Connect
Tension Band
Tension Connect Tension Band
Fig. 2-7-E
Tension Connect
Main Chassis
2-8: T BRAKE ARM/T BRAKE BAND (Refer to Fig. 2-8-A)
Remove the T Brake Spring.
Turn the T BrakeArm clockwise and bend the hook
section to remove it.
Unlock the 2 supports 1and remove the T Brake Band.
1.
2.
3.
Fig. 2-8-A
T Brake Band
Hook section
T Brake Arm
T Brake Spring
1
1
NOTE
1. In case of the T Brake Band installation, install correctly
as Fig. 2-8-B.
Fig. 2-8-B
[OK]
[NG]
T Brake Arm
T Brake Band
T Brake Arm
T Brake Band
2-9: S REEL/T REEL/IDLER ARM ASS’Y/IDLER GEAR
(Refer to Fig. 2-9-A)
1.
2.
3.
Remove the S Reel and T Reel.
Remove the 2 Polyslider Washers 1.
Remove the Idler Arm Ass’y and Idler Gear.
NOTE
1.
2.
3.
4.
5.
6.
Take care not to damage the gears of the S Reel and T
Reel.
The Polyslider Washer may be remained on the back of
the reel.
Take care not to damage the shaft.
Do not touch the section “A” of S Reel and T Reel. (Use
gloves.) (Refer to Fig. 2-9-A) Do not adhere the stains
on it.
When you install the reel, clean the shaft and grease it
(FG-84M). (If you do not grease, noise may be heard in
FF/REW mode.)
After installing the reel, adjust the height of the reel.
(Refer to MECHANICAL ADJUSTMENT)
Fig. 2-9-A
Idler Gear Idler Arm Ass’y
S Reel
T Reel
(A)
1
1
(A)
NOTE
1.
2.
In case of the S Reel and T Reel installation, check if the
correct parts are installed. (Refer to Fig. 2-9-B)
In case of the Idler Arm Ass’y installation, install correctly
as Fig. 2-9-C. And also set it so that the section “B” of
Fig. 2-9-A is placed under the Main Chassis tab.
Fig. 2-9-B
Big Hole
(S Reel) Small Hole (T Reel)
Fig. 2-9-C
[OK]
[NG]
Clutch Gear Idler Arm Ass’y
Idler Arm Ass’y
Clutch Gear
(B)

DISASSEMBLY INSTRUCTIONS
1-6
2-10: CASSETTE OPENER/PINCH ROLLER BLOCK/P5
ARM ASS’Y (Refer to Fig. 2-10-A)
1.
2. Unlock the support 1and remove the Cassette Opener. Remove the Pinch Roller Block and P5 Arm Ass’y.
Fig. 2-10-A
Cassette Opener
1
Pinch Roller Block
P5 Arm Ass’y
Main Chassis
NOTE
1.
2. Do not touch the Pinch Roller. (Use gloves.) In case of the Pinch Roller Block and the Pinch Roller
Cam installation, install correctly as Fig. 2-10-B.
Fig. 2-10-B
Pinch Roller Block Can be seen the hole of
the Pinch Roller Cam.
P5 Arm Ass’y
Can be seen the hole of the
Main Cam.
2-11: A/C HEAD (Refer to Fig. 2-11-A)
1.
2.
3.
4.
Remove the screw 1.
Remove the A/C Head Base.
Remove the 3 screws 2.
Remove the A/C Head and A/C Head Spring.
NOTE
1.
2.
3.
Do not touch the A/C Head. (Use gloves.)
When you install the A/C Head Spring, install as shown in
Fig. 2-11-B.
When you install the A/C Head, tighten the screw (1) first,
then tighten the screw (2), finally tighten the screw (3).
Fig. 2-11-A
(1)
2
A/C Head
A/C Head Spring
A/C Head Base
• Screw Torque: 5 ±0.5kgf•cm (Screw 1)
2
2
(3)
(2)
1
Fig. 2-11-B
Spring Position
2-12: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-12)
1.
2. Remove the screw 1. Remove the FE Head.
Fig. 2-12
1
FE Head
• Screw Torque: 5 ±0.5kgf•cm
• The FE Head is not installed on the Video Cassette Player.
2-13: CYLINDER UNIT ASS’Y (Refer to Fig. 2-13)
1.
2.
3.
Disconnect the following connector:
(CD2001)
Remove the 3 screws 1.
Remove the Cylinder Unit Ass’y.
NOTE
1. When you install the Cylinder Unit Ass’y, tighten the
screws from (1) to (3) in order while pulling the Ass’y
toward the left front direction.
Fig. 2-13
Cylinder Unit Ass’y
1
(1)
• Screw Torque: 3 ±0.5kgf•cm
1
1
(2)
(3)
CD2001

DISASSEMBLY INSTRUCTIONS
1-7
2-14: CAPSTAN DD UNIT (Refer to Fig. 2-14-A)
1.
2.
3.
Remove the Capstan Belt.
Remove the 3 screws 1.
Remove the Capstan DD Unit.
Fig. 2-14-A
Capstan Belt
Capstan DD Unit
• Screw Torque: 4 ±0.5kgf•cm
1
11
2-15: MAIN CAM/PINCH ROLLER CAM/JOINT GEAR
(Refer to Fig. 2-15-A)
1.
2. Remove the E-Ring 1, then remove the Main Cam. Remove the E-Ring 2, then remove the Pinch Roller
Cam and Joint Gear.
Fig. 2-15-A
1
Main Cam
Pinch Roller Cam
Joint Gear
2
NOTE
1. In case of the Pinch Roller Cam and Main Cam installa-
tion, install them as the circled section of Fig. 2-15-B so
that the each markers are met. (Refer to Fig. 2-15-B)
And also can be seen the Main Chassis hole through the
Main Cam maker hole.
Fig. 2-15-B
Pinch Roller Cam
Marker
Main Cam
2-16: LOADING GEAR S/T UNIT (Refer to Fig. 2-16-A)
1.
2.
Remove the E-Ring 1and remove the Main Loading
Gear.
Remove the Main Rod, Tension Lever, Loading Arm S
Unit and Loading Arm T Unit.
1
Main Loading Gear
Main Rod
Tension Lever Loading Arm T Unit
Loading Arm S Unit
Fig. 2-16-A
NOTE
1. In case of the Capstan DD Unit installation, apply the
silicon bond (TSE3843-W) on the position Fig. 2-14-B
correctly. (If no silicon bond applied, abnormal noise will
be heard on the deck operation.)
(Refer to Fig. 2-14-B, C)
Fig. 2-14-B
Applied position of
silicon bond
Be careful not to apply the silicon
bond to the Pinch Roller.
Fig. 2-14-C
Silicon Bond
Main Chassis
Capstan DD Unit

DISASSEMBLY INSTRUCTIONS
1-8
1
Clutch Ass’y
Ring Spring
Clutch Lever
Coupling Gear
Coupling Spring
Clutch Gear
NOTE
1. When you install the Loading Arm S Unit, Loading Arm T
Unit and Main Loading Gear, align each marker. (Refer to
Fig. 2-16-B)
Fig. 2-16-B
Marker
Main Loading Gear
Loading Arm T Unit Loading Arm S Unit
Marker
2-17: CLUTCH ASS’Y/RING SPRING/CLUTCH LEVER/
CLUTCH GEAR (Refer to Fig. 2-17-A)
1.
2.
3.
4.
Remove the Polyslider Washer 1.
Remove the Clutch Ass’y and Ring Spring.
Remove the Clutch Lever.
Remove the Coupling Gear, Coupling Spring and Clutch
Gear.
Fig. 2-17-A
NOTE
1. In case of the Clutch Ass’y installation, install it with
inserting the spring of the Clutch Ass’y into the dent of the
Coupling Gear. (Refer to Fig. 2-17-B)
Fig. 2-17-B
Clutch Ass’y
Coupling Gear
2-18: CASSETTE GUIDE POST/INCLINED BASE S/T
UNIT/P4 CAP (Refer to Fig. 2-18-A)
1.
2.
3.
Remove the P4 Cap.
Unlock the support 1and remove the Cassette Guide
Post.
Remove the Inclined Base S Unit and Inclined Base T
Unit.
Fig. 2-18-A
Cassette Guide Post
Inclined Base S
Unit Inclined Base T
Unit
P4 Cap
1
NOTE
1.
2.
3.
Do not touch the roller of Guide Roller.
In case of the P4 Cap installation, install it with parallel
for “A” and “B” of Fig. 2-18-B.
In case of the Cassette Guide Post installation, install
correctly as the circled section of Fig. 2-18-C.
Fig. 2-18-B
“A” “B”
P4 Cap Cassette Opener
Fig. 2-18-C
[OK]
Cassette Guide Post
[NG]
Cassette Guide Post

DISASSEMBLY INSTRUCTIONS
1-9
3. REMOVAL AND INSTALLATION OF FLAT
PACKAGE IC
REMOVAL
1. Put the Masking Tape (cotton tape) around the Flat
Package IC to protect other parts from any damage.
(Refer to Fig. 3-1.)
NOTE
Masking is carried out on all the parts located within
10 mm distance from IC leads.
Fig. 3-1
Masking Tape
(Cotton Tape)
IC
2. Heat the IC leads using a blower type IC desoldering
machine. (Refer to Fig. 3-2.)
NOTE
Do not add the rotating and the back and forth direc-
tions force on the IC, until IC can move back and forth
easily after desoldering the IC leads completely.
Fig. 3-2
Blower type IC
desoldering machine
IC
3. When IC starts moving back and forth easily after
desoldering completely, pickup the corner of the IC using
a tweezers and remove the IC by moving with the IC
desoldering machine. (Refer to Fig. 3-3.)
NOTE
Some ICs on the PCB are affixed with glue, so be
careful not to break or damage the foil of each IC
leads or solder lands under the IC when removing it.
Fig. 3-3
Blower type IC
desoldering machine
Tweezers
IC
4.
5. Peel off the Masking Tape. Absorb the solder left on the pattern using the Braided
Shield Wire. (Refer to Fig. 3-4.)
NOTE
Do not move the Braided Shield Wire in the vertical
direction towards the IC pattern.
Fig. 3-4
Braided Shield Wire
Soldering Iron
IC pattern

DISASSEMBLY INSTRUCTIONS
1-10
Fig. 3-5
INSTALLATION
1. Take care of the polarity of new IC and then install the
new IC fitting on the printed circuit pattern. Then solder
each lead on the diagonal positions of IC temporarily.
(Refer to Fig. 3-5.)
Soldering Iron
Solder temporarily Solder temporarily
2. Supply the solder from the upper position of IC leads
sliding to the lower position of the IC leads.
(Refer to Fig. 3-6.)
Fig. 3-6
Solder
IC
Soldering Iron
Supply soldering
from upper position
to lower position
3. Absorb the solder left on the lead using the Braided
Shield Wire. (Refer to Fig. 3-7.)
NOTE
Do not absorb the solder to excess.
Fig. 3-7
Soldering Iron
IC
Braided Shield Wire
4. When bridge-soldering between terminals and/or the
soldering amount are not enough, resolder using a Thin-
tip Soldering Iron. (Refer to Fig. 3-8.)
Fig. 3-8
Thin-tip Soldering Iron
IC
5. Finally, confirm the soldering status on four sides of the
IC using a magnifying glass.
Confirm that no abnormality is found on the soldering
position and installation position of the parts around the
IC. If some abnormality is found, correct by resoldering.
NOTE
When the IC leads are bent during soldering and/or
repairing, do not repair the bending of leads. If the
bending of leads are repaired, the pattern may be
damaged. So, be always sure to replace the IC in this
case.

1-11
KEY TO ABBREVIATIONS
A
B
C
D
E
F
G
H
A/C
ACC
AE
AFC
AFT
AFT DET
AGC
AMP
ANT
A.PB
APC
ASS’Y
AT
AUTO
A/V
BGP
BOT
BPF
BRAKE SOL
BUFF
B/W
C
CASE
CAP
CARR
CH
CLK
CLOCK (SY-SE)
COMB
CONV
CPM
CTL
CYL
CYL-M
CYL SENS
DATA (SY-CE)
dB
DC
DD Unit
DEMOD
DET
DEV
E
EF
EMPH
ENC
ENV
EOT
EQ
EXT
F
FBC
FE
FF
FG
FL SW
FM
FSC
FWD
GEN
GND
H.P.F
:
:
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:
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:
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Audio/Control
Automatic Color Control
Audio Erase
Automatic Frequency Control
Automatic Fine Tuning
Automatic Fine Tuning Detect
Automatic Gain Control
Amplifier
Antenna
Audio Playback
Automatic Phase Control
Assembly
All Time
Automatic
Audio/Video
Burst Gate Pulse
Beginning of Tape
Bandpass Filter
Brake Solenoid
Buffer
Black and White
Capacitance, Collector
Cassette
Capstan
Carrier
Channel
Clock
Clock (Syscon to Servo)
Combination, Comb Filter
Converter
Capstan Motor
Control
Cylinder
Cylinder-Motor
Cylinder-Sensor
Data (Syscon to Servo)
Decibel
Direct Current
Direct Drive Motor Unit
Demodulator
Detector
Deviation
Emitter
Emitter Follower
Emphasis
Encoder
Envelope
End of Tape
Equalizer
External
Fuse
Feed Back Clamp
Full Erase
Fast Forward, Flipflop
Frequency Generator
Front Loading Switch
Frequency Modulation
Frequency Sub Carrier
Forward
Generator
Ground
High Pass Filter
I
K
L
M
N
O
P
R
S
H.SW
Hz
IC
IF
IND
INV
KIL
L
LED
LIMIT AMP
LM, LDM
LP
L.P.F
LUMI.
M
MAX
MINI
MIX
MM
MOD
MPX
MS SW
NC
NR
OSC
OPE
PB
PB CTL
PB-C
PB-Y
PCB
P. CON
PD
PG
P-P
R
REC
REC-C
REC-Y
REEL BRK
REEL S
REF
REG
REW
REV, RVS
RF
RMC
RY
S. CLK
S. COM
S. DATA
SEG
SEL
SENS
SER
SI
SIF
SO
SOL
SP
STB
SW
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Head Switch
Hertz
Integrated Circuit
Intermediate Frequency
Indicator
Inverter
Killer
Left
Light Emitting Diode
Limiter Amplifier
Loading Motor
Long Play
Low Pass Filter
Luminance
Motor
Maximum
Minimum
Mixer, mixing
Monostable Multivibrator
Modulator, Modulation
Multiplexer, Multiplex
Mecha State Switch
Non Connection
Noise Reduction
Oscillator
Operation
Playback
Playback Control
Playback-Chrominance
Playback-Luminance
Printed Circuit Board
Power Control
Phase Detector
Pulse Generator
Peak-to Peak
Right
Recording
Recording-Chrominance
Recording-Luminance
Reel Brake
Reel Sensor
Reference
Regulated, Regulator
Rewind
Reverse
Radio Frequency
Remote Control
Relay
Serial Clock
Sensor Common
Serial Data
Segment
Select, Selector
Sensor
Search Mode
Serial Input
Sound Intermediate Frequency
Serial Output
Solenoid
Standard Play
Serial Strobe
Switch

1-12
KEY TO ABBREVIATIONS
S
T
U
V
X
Y
SYNC
SYNC SEP
TR
TRAC
TRICK PB
TP
UNREG
V
VCO
VIF
VP
V.PB
VR
V.REC
VSF
VSR
VSS
V-SYNC
VT
X’TAL
Y/C
:
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:
Synchronization
Sync Separator, Separation
Transistor
Tracking
Trick Playback
Test Point
Unregulated
Volt
Voltage Controlled Oscillator
Video Intermediate Frequency
Vertical Pulse, Voltage Display
Video Playback
Variable Resistor
Video Recording
Visual Search Fast Forward
Visual Search Rewind
Voltage Super Source
Vertical-Synchronization
Voltage Tuning
Crystal
Luminance/Chrominance

1-13
SERVICE MODE LIST
This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter to the SERVICE MODE function, press and hold both buttons simultaneously on the main unit or on the main unit and on
the remote control for more than a standard time (second).
Set Key Operations
CH UP
Adjust the SWITHCHING POINT automatically.
Refer to the “ELECTRICALADJUSTMENT” (SWITHCHING POINT).
PLAY/REC total hours are displayed on the FIP.
Refer to the “PREVENTIVE CHECKS AND SERVICE INTERVALS”
(CONFIRMATION OF HOURS USED).
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the “WHEN REPLACING EEPROM (MEMORY) IC”.
Set Key
FF 2
CH UP STOP 2
CH UP PLAY 2
Initialization of the factory on VCR.
NOTE: Do not use this for the normal servicing.
If you set a factory initialization, the memories are reset such as
the clock setting, the channel setting, and PLAY/REC total hours.
Standard Time
(seconds)
CH DOWN POWER 2 VCR operation mode at no connection of DVD.
Refer to the “PREPARATION FOR SERVICING”
NOTE: Although the DVD is connected, the DVD mode cannot be selected.
Set Key OperationsRemocon Key Standard Time
(seconds)
REC 4 2
Initialization of the factory on DVD.
NOTE: The function will only work without the setting of DVD disc at DVD
mode.
Do not use this for the normal servicing.
REC 6 2
STOP 1 3
DVD Write mode.
Refer to the “RE-WRITE FOR DVD FIRMWARE”.
NOTE: The function will only work at the DVD stop mode.
Do not use this for the normal servicing.
Check for the firmware version.
Refer to the “RE-WRITE FOR DVD FIRMWARE”.
NOTE: The function will only work at the DVD stop mode.
Do not use this for the normal servicing.
PARENTAL CONTROL - RATING LEVEL
4-DIGIT SECURITY CODE CANCELLATION
If the stored 4-digit security code in the Rating Level menu needs to be cancelled, please follow the steps below.
Turn on the power, and set to the DVD stop mode.
Press the SET UP button to display the DVD menu.
Press the SET +/- button to select the "Operation" menu.
Press the TV/VCR PR +/- button to select the Parental Lock, then press the OK button.
Press the TV/VCR PR +/- button to select the ON or OFF, then press the OK button.
Press the STOP button four times on the remote control, then press the OK button.
The 4-digit security code is cleared.
Press the SET UP button to disappear the DVD menu.
1.
2.
3.
4.
5.
6.
7.
<NOTE> WHEN "N" IS ALWAYS BEING DISPLAYED ON THE TV MONITOR.
(REMOTE CONTROLLER FORMAT)
This product is usable the remote controller which is used by DVD+VHS of the other brand.
If "N" is always being displayed on the TV monitor, can not control from provided remote controller since this product is other
brand format.
• How to return a JVC format.
Turn off the power of the set and push the CHANNEL+ button and the REC button of the set simultaneously.

1-14
WHEN REPLACING EEPROM (MEMORY) IC
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to
ensure correct data settings while making reference to TABLE 1.
Table 1
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
The unit will now have the correct DATA for the new MEMORY IC.
Turn on the POWER.
Press both CH UP button on the set and the FF button on the set for more than 2 seconds.
ADDRESS and DATA will appear on FIP as Fig 1.
ADDRESS is now selected and should “blink”. Using the SET + or - button on the remote,
step through the ADDRESS until required ADDRESS to be changed is reached.
Press OK to select DATA. When DATA is selected, it will “blink”.
Again, step through the DATA using SET + or - button until required DATA value has been selected.
Pressing OK will take you back to ADDRESS for further selection if necessary.
Repeat steps 3 to 6 until all data has been checked.
When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
After the data input, set to the initializing of shipping.
Turn POWER on.
Press both CH UP button on the set and the STOP button on the set for more than 2 seconds.
After the finishing of the initializing of shipping, the unit will turn off automatically.
Fig. 1
ADDRESS DATA
INI +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
B0 --- --- --- --- --- --- --- --- --- 8B C9 D2 71 62 76 04
C0 B2 17 90 50 60 FA 54 51 51 51 B2 9F 97 8E 00 66
D0 DB 61 21 08 02 FF 00 00 79 9F 82 02 42 B5 63 5B
E0 76 5F 08 F0 0A FB 5F 08 F0 05 F2 5F 09 F0 05 F3
F0 01 2F 9F 42 42 80 3D 06 06 89 00 3A D0 --- --- ---
NOTE: No need setting for
after INI FD.

1-15
PREVENTIVE CHECKS AND SERVICE INTERVALS
The following standard table depends on environmental conditions and usage.
Parts replacing time does not mean the life span for individual parts.
Also, long term storage or misuse may cause transformation and aging of rubber parts.
The following list means standard hours, so the checking hours depends on the conditions.
Time
Parts Name 500
hours 1,000
hours Notes
1,500
hours 2,000 hours 2,500 hours
Audio Control Head
Full Erase Head
(Recorder only)
Capstan Belt
Pinch Roller
Capstan DD Unit
Loading Motor
Tension Band
Capstan Shaft
Tape Running
Guide Post
Cylinder Unit
Clean those parts in
contact with the tape.
Clean the rubber, and parts
which the rubber touches.
Replace when rolling
becomes abnormal.
Clean the Head
T Brake Band
Clutch Ass’y
Idler Arm Ass’y
CONFIRMATION OF HOURS USED
PLAY/REC total hours can be checked on the FIP.
Total hours are displayed in 16 system of notation.
NOTE: If you set a factory initialization, the total hours is
reset to “0”.
1.
2.
3.
4.
5.
Turn on the POWER.
While pressing the CH UP button on the set, press the FF button on the set for
more than 2 seconds.
Adjust the ADDRESS to "FD" by SET + or - button and read the DATA.
(This DATA becomes the thousands digit and hundreds digit value of the following
formula.)
Adjust the ADDRESS to "FE" by SET + or - button and read the DATA.
(This DATA becomes the tens digit and ones digit value of the following formula.)
After the confirmation of using hours, turn off the power.
: Clean
: Check it and if
necessary, replace it.
CLEANING
NOTE
After cleaning the heads with isopropyl alcohol, do not
run a tape until the heads dry completely. If the heads are
not completely dry and alcohol gets on the tape, damage
may occur.
1. AUDIO CONTROL HEAD
Clean the Audio Control Head with the cotton stick
soaked by alcohol. Clean the full erase head in the same
manner. (Refer to the figure below.)
Audio Control Head
2. TAPE RUNNING SYSTEM
When cleaning the tape transport system, use the gauze
moistened with isopropyl alcohol.
3. CYLINDER
Wrap a piece of chamois around your finger. Dip it in
isopropyl alcohol. Hold it to the cylinder head softly.
Turn the cylinder head counterclockwise to clean it (in the
direction of the arrow). (Refer to the figure below.)
NOTE
Do not exert force against the cylinder head. Do not move
the chamois upward or downward on the head.
Use the chamois one by one.
Cylinder Head
ADDRESS DATA
PLAY/REC total hours.
= (16 x 16 x 16 x thousands digit value)
+ (16 x 16 x hundreds digit value)
+ (16 x tens digit value)
+ (ones digit value)

1-16
SERVICING FIXTURES AND TOOLS
(4 heads model)
VHS Alignment Tape
MHP
Torque Gauge
PUJ48075-2 Roller Driver PTU94002-2 X-JG153 X Value Adjustment Screwdriver
Torque Tape Short Jumper
MECHANISM ADJUSTMENT PARTS LOCATION GUIDE
1
2
3
4
5
6
7
89
10
Tension Connect
Tension Arm
Guide Roller
Audio/Control Head
X value adjustment driver hole
P4 Post
T Brake Spring
T Reel
S Reel
Adjusting section for the Tension Arm position
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.