Jvc HRXV 1 EU Service Manual

Page 2

TABLE OF CONTENTS

Section Title Page
Important Safety Precaulions
INSTRUCTIONS

DISASSEMBLY lNSTRUCI'IONS

1. REMOVAL OF MECHANICAL PARTS AND P.C.BOARDS
1,1 TOP CABINET AND FRONT CABINET.
172 FLAP ...............................
173 DECK CD AND DVD PCB .
1,4 POWER PCB.
175 VCR DECK .
176 VCR PCB

2. REMOVAL OF V
21 TOP BRACKET ..................
272 CASSETTE HOLDER ASSY.

3 CASSETTE SIDE L/R

4 LINK UNIT ...............

5 LINK LEVER/FLAP LEVER.

6 LOADING MOTOR / WORM

7 TENSION ASSY ................

8 T BRAKE ARM / T BRAKE BAND

9

1

1

1

1

1

1

1

S REEL/T REEL/ IDLER ARM ASS'Y/ IDLER GEAR

CASSETTE OPENER I PINCH ROLLER BLOCK / P5ARM ASSY
A/C HEAD .

o
1
2 FE HEAD ..
3 CYLINDER UNIT ASSY
4 CAPSTAN DD UNIT ......
5 MAIN CAM I PINCH ROL IJ .
6 LOADING GEAR SIT UNIT ................................
2717 CLUTCH ASSY I RING SPRING I CLUTCH LEVER I CLUTCH GEAR
2718 CASSETTE GUIDE POSTIINCLINED BASE SIT UNIT/P4 CAP
3. REMOVALAND INSTALLATION OF FLAT PACKAGE IC
REMOVAL ..
INSTALLATI .
KEY TO ABBREVI
SERVICE MODE LIST ......
WHEN "N IS ALWAYS BEING DISPLAYED ON THE TV MONITo
PARENTAL CONTROL - RATING LEVEL 4-DIGIT SECURITY CODE CANNCELLATION.
WHEN REPLACING EEPROM(MEMORY) IC .........
PREVENTIVE CHECKS AND SERVICE INTERVALS.
CONFIRMATION OF HOURS USED
CLEANING .....................................
SERVICING FIXTURES AND TOOL
MECHANISM ADJUSTMENT PARTS LOCATION GUIDE
MECHANICAL ADJUSTMENT ................................
TAPE REMOVAL METHOD AT NO POWER SUPPLY .
DISC REMOVAL METHOD AT NO POWER SUPPLY
1. CONFIRMATION AND ADJUSTMENT.
171 CONFIRMATION ANDADJUSTMENT OF TENSION
172 CONFIRMATION OF PLAYBACK TORQUE AND
BACK TENSION TORQUE DURING PLAYBACK
173 CONFIRMATION OF VSR TORQUE ............
174 CONFIRMATION OF REEL BRAKE TORQUE
2. CONFIRMATION AND ADJUSTMENT OF TAPE
RUNNING MECHANISM.
271 GUIDE ROLLER .............
272 CONFIRMATION AND ADJUSTMEN
273 TAPE RUNNING ADJUSTMENT(XFVALUE ADJUSTMENT) .
ELECTRICAL ADJUSTMENTS .
1. BASIC ADJUSMENT
171 SWITCHING POINT
ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE
Ic DESCRIPTIONS
SERVO TIMING CHA
MECHANISM TIMING CHART
TROUBLE SHOOTING GUIDE
(VCR SECTION) ..
(DVD SECTION) ..

2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,
2,

CHARTS AND DIAGRAMS
INTERCONNECTION DIAGRAM
POWER SCHEMATIC DIAGRAM ..
READ CHANNEL SCHEMTAIC DIAGRAM.
DSP SCHEMATIC DIAGRAM ..
MPEG SCHEMATIC DIAGRAM .
MEMORY SCHEMATIC DIAGRA

Section Title

AUDIO/VIDEO SCHEMATIC DIAGRAM .
SYSCON1 SCHEMATIC DIAGRAM
Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM
VCR SYSCON SCHEMATIC DIAGRAM .
TUNERVJACK SCHEMATIC DIAGRAM .
REGULATOR SCHEMATIC DIAGRAM
DISPLAY SCHEMATIC DIARAM .........
HIFFIIDEMODULATOR SCHEMATIC DIAGRAM .
DVD IN/OUT SCHEMATIC DIAGRAM ..............
SUB MICOM/OSDNPS SCHEMATIC DIAGRAM
OPERATION SCHEMATIC DIAGRAM .................

PRINTED CIRCUIT BOARDS VCR(INSERTED PARTS). 735
PRINTED CIRCUIT BOARDS VCR(CHIP MOUNTED PARTS 737
PRINTED CIRCUIT BOARDS DVD ......................... 739
PRINTED CIRCUIT BOARDS POWER / OPERATIO 2741
WAVEFORMS .............. 2742
DVD BLOCK DIAGRAM ,45
Y/C/AUDIO/HEAD AMP BLOCK DIAGRAM ,47
MICOM BLOCK DIAGRAM ........ ,49
REGULATOR BLOCK DIAGRAM 751

DISPLAY/OPERATION BLOCK DIAGRAM
TUNER/JACK/HIEFI/21PIN/OSD BLOCK DIAGRAM
DVD IN/OUT BLOCK DIAGRAM
POWER BLOCK DIAGRAM ......

PARTS LIST
3.1 PACKING AND ACCESSORY ASSEMBLY .
3.2 FINALASSEMBLY ..
3.3 MECHANISM ASSEMBLY
3.4 ELECTRICAL PARTS LIST .....
POWER BOARD ASSEMBLY<01>.
VCR BOARD ASSEMBLY<03>...
OPERATION BOARD ASSEMBLY<28>
DVD BOARD ASSEMBLY<50> .............

REFERENCE
GENERAL SPECIFICATIONS [HRVXV1EUFR] ........................ 471

Page 49

TROUBLESHOOTING GUIDE

AT PLAYBACK AND RECORDING,
CYLINDER MOTOR UNLOAD

Is the voltage at pin 8 of
CP3001 about D012.6V?

Check at 12.6V line,
power block.

In playback, is at pin 12 of
CP3001 about DC2.5V?

Check IC3001.

Change CYLINDER MOTOR.

PLAYBACK PICTURE IS NOISY
(EVEN AFTER CLEANING HEADS)

ls FM signal at pin 79 of
|0101 270 mVp-p 7

Check CYLINDER.

Is FM signal at pin 8 of IC3001 YES
more than 1V?

Perform the interchange
able adjustment of DECK.

Is VIDEO output at the emitter N0

of 04501 2Vp-p, and are %

there any noises?

Check ICIOI and Q4501.

YES

Change J8005.

1-45

Page 64

TROUBLESHOOTING GUIDE

DVD/CD ANALOG AUDIO DOES
NOT APPEAR

X /\

Are there waveform

Are there waveform

0f IC4001 '7
NO
Check |C2001
and peripheral circuit.
Are there waveform NO

Change IC8503.

YES
< Is the voltage at pin 3 NO Check |C8004
of CP8502 about 5V? and peripheral circuit.

\

<\
|T|
UJ

Check |C8503
and peripheral circuit.

1 -60