JVC HR-XVS20EF, HR-XVS20EK, HR-XVS20EX Service Manual

SERVICE MANUAL

DVD PLAYER & VIDEO CASSETTE RECORDER

8296920035

HR-XVS20EF,HR-XVS20EK,HR-XVS20EX

(EK model)

(other model)

For disassembling and assembling of MECHANISM ASSEMBLY, refer to the SERVICE MANUAL No.86700 (MECHANISM ASSEMBLY).

SPECIFICATION (The specifications shown pertain specifically to the model HR-XVS20EX)

GENERAL

Power requirement AC 220 V - 240 V~, 50 Hz/60 Hz
Power consumption

Temperature

Operating position Horizontal only
Dimensions (W x H x D)
Weight 4.8 kg
Format S-VHS/VHS PAL standard
Maximum recording time

VIDEO/AUDIO (S-VHS deck)

Signal system PAL-type colour signal and CCIR
Recording system DA4 (Double Azimuth) head helical scan
Signal-to-noise ratio 45 dB

Horizontal resolution

Frequency range
Normal audio 70 Hz to 10,000 Hz (Normal audio)
Hi-Fi audio 20 Hz to 20,000 Hz (Hi-Fi audio)
Input/Output 21-pin SCART connectors:

Power on 28 W
Power off 5.0 W

Operating 5°C to 40°C

Storage -20°C to 60°C

435 mm x 98 mm x 357 mm

(SP) 240 min. with E-240 video cassette

(LP) 480 min. with E-240 video cassette

(EP) 720 min. with E-240 video cassette

monochrome signal, 625 lines 50 fields
system

(SP/LP) 250 lines (VHS)/400 lines (S-VHS)

(EP) 220 lines (VHS)/350 lines (S-VHS)

IN/OUT x 1, IN/DECODER x 1
RCA connectors:
VIDEO IN x 1, AUDIO IN x 1, AUDIO OUT x 1
S-Video connector: IN x 1

VIDEO/AUDIO (DVD deck)

Signal system PAL
Applicable disc DVD (12 cm, 8 cm)

Audio characteristics DVD (4 Hz-22 KHz)
Frequency responce CD (4 Hz-20 KHz)
S/N Ratio 90 dB
Harmonic distortion 0.10%
Wow and flutter Below Measurable Level
Dynamic range 90 dB
Output

Audio (RCA) 2 Vrms, 1 Kohm

Digital Audio 0.5 Vp-p/75 ohm
Pickup
CD

Wavelength 775-805 nm

Maximum output power

DVD

Wavelength 640-660 nm

Maximum output power

TUNER/TIMER

TV channel storage capacity
Tuning system Frequency synthesized tuner
Channel coverage
VHF 47 MHz - 89 MHz/104 MHz - 300 MHz/302

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,

CD (12 cm, 8 cm)

0.5 mW

1.0 mW

99 positions (+AUX position)

MHz - 470 MHz

“R6” battery x 2

HR-XVS20EF,HR-XVS20EK,HR-XVS20EX D2SP11

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.

No.82969

2003/5

The following table indicates main different points between models HR-XVS20EF, HR-XVS20EK and HR-XVS20EX.

ITEM

MODEL

HR-XVS20EF HR-XVS20EK HR-XVS20EX

POWER PLUG CEE 3PIN CEE
SCART CABLE PROVIDED OPTIONAL
MESECAM USED(PB ONLY) NOT USED USED(MANUAL)
BROADCASTING STANDARD L,L',B/G I B/G,D/K
STEREO DECODER NICAM(L,B/G)/A2(B/G) NICAM NICAM/A2
RF OUT NOT USED USED USED
VCR PLUS+ SHOWVIEW VIDEO PLUS+ SHOWVIEW
VPS NOT USED

← USED

OSD LANGUAGE FRENCH ENGLISH 13 LANGUAGES

NOTE:

← is same as left.

Mark

←

1-2 (No.82969)

TABLE OF CONTENTS

1 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1.1 SAFTY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

2.1 Manually removing the cassette tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

2.2 Manually removing the disk(DVD/CD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

2.3 Removing the major parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

2.4 DVD unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

2.5 Emergency display function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

2.6 Service position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

2.7 Jig RCU mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

2.8 Mechanism service mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24

2.9 Maintenance and inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24

3 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

3.1 Before adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

3.2 Mechanism compatibility adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26

3.3 Electrical adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

CHARTS AND DIAGRAMS

BOARD INTERCONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

SWITCHING REGULATOR SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

MAIN (VIDEO/N.AUDIO) SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

MAIN (S-SUB) SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

MAIN (FMA) SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

MAIN (SYSCON) SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

MAIN (TUNER) SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

MAIN (FRONT), FRONT AND JACK SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

MAIN (TERMINAL) SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

MAIN (ON SCREEN) SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

MAIN (SECAM) SCHEMATIC DIAGRAM [HR-XVS20EF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

CPU PIN FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

REMOTE CONTROLLER SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

FDP GRID ASSIGNMENT AND ANODE CONNECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

2D DIGITAL SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25

TERMINAL SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

DVD IF SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

S-P CONVERTER SCHEMATIC DIAGRAM [HR-XVS20EF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31

DVD SERVO CONTROL SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33

DVD AV DECODER SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35

SWITCHING REGULATOR CIRCUIT BOARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37

COMPONENT PARTS LOCATION GUIDE <SWITCHING REGULATOR> LPB10184-001C . . . . . . . . . . 2-37

COMPONENT PARTS LOCATION GUIDE <MAIN> LPB10194-001C. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38

MAIN CIRCUIT BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39

2D DIGITAL AND TERMINAL CIRCUIT BOARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41

COMPONENT PARTS LOCATION GUIDE <2D DIGITAL> LPB10162-001C . . . . . . . . . . . . . . . . . . . . . . 2-41

COMPONENT PARTS LOCATION GUIDE <TERMINAL> LPB10193-001B . . . . . . . . . . . . . . . . . . . . . . . 2-41

DVD IF CIRCUIT BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42

COMPONENT PARTS LOCATION GUIDE <DVD IF> LPB10183-001C . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42

FRONT, JACK AND S-P CONVERTER CIRCUIT BOARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43

COMPONENT PARTS LOCATION GUIDE <S-P CONVERTER> LPB10144-004A . . . . . . . . . . . . . . . . . 2-43

DVD SERVO CONTROL AND DVD LOADING MOTOR CIRCUIT BOARDS . . . . . . . . . . . . . . . . . . . . . . 2-44

VOLTAGE CHARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45

DVD BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48

VIDEO BLOCK DIAGRAM (1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49

VIDEO BLOCK DIAGRAM (2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-51

AUDIO BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53

SYSTEM CONTROL BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-54

PARTS LIST

1. EXPLODED VIEW

1.1 PACKING AND ACCESSORY ASSEMBLY <M1> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

1.2 FINAL ASSEMBLY <M2>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

1.3 MECHANISM ASSEMBLY <M4>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

1.4 DVD TRAVERSE MECHANISM ASSEMBLY<MJ>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

1.5 DVD LOADING MECHANISM ASSEMBLY<MN> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

2. PARTS LIST

PACKING AND ACCESSORY ASSEMBLY <M1> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

FINAL ASSEMBLY <M2> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

MECHANISM ASSEMBLY <M4> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

DVD TRAVERSE MECHANISM ASSEMBLY<MJ>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

DVD LOADING MECHANISM ASSEMBLY<MN>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

SWITCHING REGULATOR BOARD ASSEMBLY <01> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

MAIN BOARD ASSEMBLY <03>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

2D DIGITAL BOARD ASSEMBLY <05> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

TERMINAL BOARD ASSEMBLY <06> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

A/C HEAD BOARD ASSEMBLY <12>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

FRONT BOARD ASSEMBLY <28>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

S JACK BOARD ASSEMBLY <36>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

DVD IF BOARD ASSEMBLY <50> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

LOADING MOTOR BOARD ASSEMBLY <55>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

S-P CONVERTER BOARD ASSEMBLY <87> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

DVD SERVO CONTROL BOARD ASSEMBLY <95> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

DVD LOADING MOTOR BOARD ASSEMBLY <96> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

(No.82969)1-3

SECTION 1

r

e

PRECAUTIONS

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.

quently, 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 connector

In 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. Insert

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. Conse-

1-4 (No.82969)

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

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 followi ng
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) Clea r ance 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.

(4) Leaka ge 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 groundi ng
specifications.

Fig.1-1-8

Fig.1-1-10

Fig.1-1-11

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.

(No.82969)1-5

1.1.3 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.

1.1.3.1 Grounding to prevent damage by static electricity

Static electricity in the work area can destroy the optical pickup (laser dio de) 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 conductive sh eet) 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) Handli ng the optical pickup

• In order to maintain quality during transport and before install ation, both sides of the laser diode on the replacement optical
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.

1.1.4 Handling the traverse unit (optical pickup)

(1) Do not subject the tra verse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
(2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the

replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long

a time when attaching it to the connector.
(3) Handle the flexible cable carefully as it may break when subjected to strong force.
(4) I t is not possible to adjust the semi-fixed resistor that adjusts th e laser power. Do not turn it.

1-6 (No.82969)

1.1.5 Important for laser products

(1) CLASS 1 LASER PRODUCT
(2) DANGER : Invisib le laser radiation when open and inter

lock failed or defeated. Avoid direct exposure to beam.

(3) CAUTION : There are no servicea ble parts inside the

Laser Unit. Do not disassemble the Laser Unit. Replace the
complete Laser Unit if it malfunctions.

(4) CAUTION : The compa ct 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.

(No.82969)1-7

1.1.6 Precautions for Service

1.1.6.1 Handling of Traverse Unit and Laser Pickup

(1) Do not touch any peripheral element of the pickup or the actuator.
(2) The trav erse 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 replac e the traverse unit, pul l 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.

1.1.6.2 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) After removing the flexible wire from the connector (CN101), short-circuit the flexible wire by the metal clip.
(4) 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.

DVD TRAVERSE MECHANISM ASSEMBLY

DVD unit

SHORT CIRCUIT

CN101

DVD SERVO CONTROL
BOARD ASSEMBLY

1-8 (No.82969)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 Manually removing the cassette tape

If you cannot remove the cassette tape which is loaded because
of any electrical or mechanical failures, manually remove it by
taking the following steps.

(1) Unpl ug the power cord plug from the power outlet.
(2) Refer to the disassembl y procedure of the VCR and per-

form the disassembly of the major parts before removing
the mechanism assembly. (See Fig. 2-1a)

Fig.2-1a

Tension arm assembly

Pole base assembly

Pinch roller arm assembly

(3) Unlo ad the pole base assembly by manually turning the

gear of the loading motor until the pole base assembly is
hidden behind the cassette lid. In doing so, hold the tape by
the hand to keep the slack away from any grease. (See
Fig.2-1b )

In case of mechanical failures, while keeping the ten­sion arm assembly free from tension, pull out the tape
on the pole base assembly. Take the spring(a) of the
pinch roller arm assembly off the hook, and detach it
from the tape.

(4) Remove the screw (a) of the side frame (L/R).
(5) Hold the sl ack tape and cassette cover together, lift the

cassette tape, top frame, cassette holder and side frames
(L, R) together from the rear and remove them by dis-en­gaging the hooks (a) and (b).

Screw(a)

Cassette tape

Hook(a)

Cassette holder

Top frame

Side frame(R)

Screw(a)

Spring(a)

Direction of unloading

Fig.2-1b

Side frame(L)

Hook(b)

Fig.2-1c

(6) Take up the slack of the tape into the cassette. This com-

pletes removal of the cassette tape.

2.2 Manually removing the disk(DVD/CD)

If you cannot remove the disk which is loaded because of any
electrical or mechanical failures, manually remove it by taking the
following steps.

(1) Unpl ug the power cord plug from the power outlet.
(2) Remove the to p cover and front panel assembly.

(Refer to the disassembly procedure and perform the dis­assembly of the major parts before removing)

(3) Turn the motor on DVD Loading Motor board assembly by

hand to open the disk tray.(See Fig. 2-2a)

DVD UNITPULLY GEAR

UNLOADING

Fig.2-2a

(No.82969)1-9

2.3 Removing the major parts

2.3.1 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.

Part Name

[1] Top cover 1-3a

Bracket 2(S1c)

Fig.
No.

Point Note

4(S1a),(S1b),3(L1a), <Note 1a>
2(SD1a),(P1a),(W1a),
CN1(WR1a),

----------------------------------------

<Note 2a>

• 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 panel assembly, lift the Cassette
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) Identi fication 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) Adj ustment information for installation

2.3.2 Disassembly procedure

Step/

Loc No.

Part Name

[1] Top cover
[2] Front panel assembly

(Front boaed assembly)
(S JACK boaed assembly)
[HR-SXVS20EF]

[3]

S-P Converter board assembly

[4]

Mechanism assembly

(Drum assembly)

(Inertia plate)
(Roller arm assembly) (P3a),(L3b)

[5]

Rear cover

[6]

Main board assembly

[7]

DVD unit

[8]

DVD IF board assembly 2-3-2d

[9]

Switching regulator
board assembly

Fig.
No.

2-3-2d
2-3-2d

2-3-2e

Point

2(S1a), 4(S1b)
3(L2a),5(L2b),

CN8006(WR2a),
CN7001(WR2b),
CN7104(WR2c)

--------------------------

5(S2b)

--------------------------

2(S2c)

2-3-2d

CN1601(WR3a)
2(S3a),(S3b)

2-3-2e
2-3-2d

CN2001(WR4a),
2(S4a), (S4b)

--------------------------

2-3-2b

CN1(WR4b),

2-3-2c

(S4c), (S4d), (S4e)

--------------------------

2-3-2e

4(L3a)

--------------------------

2-3-2d

2(S5a),6(S5b),

2-3-2d

CN7301(WR6a),

2-3-2e

CN7304(WR6b),
CN7306(WR6c),
CN5311(WR6d),
CN7303(WR6e),
CN7303(WR6e),
2(S6a)

2-3-2d

3(S7a)
CN8004(WR8a),

2-3-2e

4(S8a)

2-3-2d

4(S9a)

Note

<

Note 2a

<

Note 3a

Note 3a

<
<

Note 3b

<

Note 3c
Note 3d

<

Note 2a

<

<

Note 2a

Door
opener

Side
frame(R)

Switch
knob

Fig.2-3-2a

<Note 3a>

• 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 3b>

• When reattaching the Mechanism assembly, secure the
screws (S4a to S4b) in the order of a, b.

<Note 3c>

• When reattaching the Mechanism assembly, be sure to align
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.

<Note 3d>

• When reattaching the Drum assembly, secure the screws (S4c
to S4e) in the order of c, d, e.

(S4c)

(S4d)

Mechanism

>

assembly

(S4e)

(S4d)

>
>
>

>

Drum
assembly

<Note 3c>

Fig.2-3-2b

<NOTE>
Attach the Drum assembly appropriately,
since the installation state of the Drum assembly
influences the FM WAVEFORM LINEARITY
greatly.

(S4c)

(S4e)

HOOK

• When handling the drum assembly alone, hold it by the motor
or shaft. Be careful not to touch other parts, especially the vid­eo heads. Also take care not to damage the connectors.

>

Shaft

Motor

Video heads

Switch
lever

1-10 (No.82969)

Fig.2-3-2c