
TABLE OF CONTENTS
Section Title Page Section Title Page
Important Safety Precautions
INSTRUCTIONS
DISASSEMBLY INSTRUCTIONS
1.
REMOVAL OF MECHANICALPARTS AND P.C.BOARDS.....1-1
1-1 TOP CABINET AND FRONT CABINET ............................ 1-1
1-2 FLAP ..................................................................................1-1
1-3 DVD DECK ........................................................................1-1
1-4 DVD 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 ARMASS’Y / IDLER GEAR.....1-5
2-10
CASSETTE OPENER / PINCH ROLLER BLOCK / P5 ARM 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. REMOVAL OF DVD DECK PARTS.........................................1-9
3-1 TRAY..................................................................................1-9
3-2 MAIN CHASSIS ASS’Y ......................................................1-9
3-3
RACK LOADING / MAIN GEAR / RACK LOADING SPRING / RACK L SPRING..
1-9
3-4 CLAMPER ASS’Y / INSULATOR(R) / LEVER SWITCH ....1-9
3-5 TRAVERSE HOLDER / INSULATOR(F) ..........................1-10
3-6 SWITCH PCB ASS’Y .......................................................1-10
3-7 RACK FEED ASS’Y .........................................................1-10
3-8 RELAY PCB ASS’Y .......................................................... 1-11
3-9 GEAR............................................................................... 1-11
3-10 IDLER ARM ................................................................... 1-11
3-11 FEED MOTOR ...............................................................1-12
KEY TO ABBREVIATIONS ......................................................1-13
SERVICE MODE LIST..............................................................1-15
WHEN “N” IS ALWAYS BEING DISPLAYED ON THE TV MONITOR .
1-15
PARENTAL CONTROL - RATING LEVEL 4-DIGIT PASSWORD CANNCELLATION .
1-15
WHEN REPLACING EEPROM(MEMORY) IC .........................1-16
PREVENTIVE CHECKS AND SERVICE INTERVALS............. 1-17
CONFIRMATION OF HOURS USED .......................................1-17
CLEANING ...............................................................................1-17
SERVICING FIXTURES AND TOOLS......................................1-18
MECHANISM ADJUSTMENT PARTS LOCATION GUIDE............
1-18
MECHANICAL ADJUSTMENTS ..............................................1-19
TAPE REMOVAL METHOD AT NO POWER SUPPLY ..........1-19
DISC REMOVAL METHODAT NO POWER SUPPLY...........1-19
1. CONFIRMATION AND ADJUSTMENT .................................1-19
1-1
CONFIRMATION ANDADJUSTMENT OF TENSION POST POSITION .
1-19
1-2 CONFIRMATION OF PLAYBACK TORQUE AND
BACK TENSION TORQUE DURING PLAYBACK...........1-19
1-3 CONFIRMATION OF VSR TORQUE...............................1-19
1-4 CONFIRMATION OF REEL BRAKE TORQUE................1-20
2. CONFIRMATION AND ADJUSTMENT OF TAPE
RUNNING MECHANISM ..................................................1-20
2-1 GUIDE ROLLER ..............................................................1-20
2-2
CONFIRMATION AND ADJUSTMENT OF AUDIO/CONTROL HEAD .
1-21
2-3
TAPE RUNNING ADJUSTMENT(X-VALUE ADJUSTMENT) .
1-21
ELECTRICAL ADJUSTMENTS ............................................... 1-22
1. BASIC ADJUSMENT ............................................................1-22
1-1 SWITCHING POINT ........................................................1-22
ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE ............
1-22
SERVO TIMING CHART ..........................................................1-23
MECHANISM TIMING CHART.................................................1-24
IC DESCRIPTIONS ..................................................................1-25
TROUBLE SHOOTING GUIDE ................................................1-28
(VCR SECTION) ....................................................................1-28
(DVD SECTION) ....................................................................1-51
CHARTS AND DIAGRAMS
INTERCONNECTION DIAGRAM ............................................2-1
Y/C/AUDIO/CCD/HEAD AMP SCHEMATIC DIAGRAM ..........2-3
SYSCON SCHEMATIC DIAGRAM ..........................................2-5
TUNER/JACK SCHEMATIC DIAGRAM ..................................2-7
OPERATION/DISPLAY SCHEMATIC DIAGRAM....................2-9
HI-FI/DEMODULATOR SCHEMATIC DIAGRAM ..................2-11
POWER SCHEMATIC DIAGRAM .........................................2-13
OPERATION/LED SCHEMATIC DIAGRAM ..........................2-15
SW/RELAY/FG SCHEMATIC DIAGRAM ..............................2-17
MPEG/MICOM SCHEMATIC DIAGRAM ...............................2-19
MEMORY SCHEMATIC DIAGRAM .......................................2-21
RF AMP/DSP SCHEMATIC DIAGRAM .................................2-23
AUDIO/VIDEO SCHEMATIC DIARAM ..................................2-25
PRINTED CIRCUIT BOARD VCR .........................................2-27
PRINTED CIRCUIT BOARD DVD .........................................2-31
PRINTED CIRCUIT BOARD SW/RELAY/FG ........................2-33
PRINTED CIRCUIT BOARD OPERATION............................2-34
Y/C/AUDIO/CCD/HEAD AMP BLOCK DIAGRAM .................2-35
SYSTEM CONTROL BLOCK DIAGRAM...............................2-37
OPERATION/DISPLAY BLOCK DIAGRAM...........................2-39
HI-FI/DEMODULATOR BLOCK DIAGRAM ...........................2-41
TUNER/JACK BLOCK DIAGRAM .........................................2-43
POWER BLOCK DIAGRAM ..................................................2-45
DVD BLOCK DIAGRAM ........................................................2-47
WAVEFORMS .......................................................................2-49
PARTS LIST
3.1 EXPLODED VIEW ................................................................3-1
3.1.1 PACKING AND ACCESSORYASSEMBLY<M1> .......... 3-1
3.1.2 FINAL ASSEMBLY<M2> ................................................ 3-2
3.1.3 MECHANISM ASSEMBLY(DVD)<MN> ..........................3-3
3.1.4 MECHANISM ASSEMBLY(VCR)<M4> .......................... 3-4
3.2 PARTS LIST ......................................................................... 3-6
PACKING AND ACCESSORY ASSEMBLY<M1> ....................3-6
FINALASSEMBLY<M2> ..........................................................3-6
MECHANISM ASSEMBLY(VCR)<M4> ....................................3-6
MECHANISM ASSEMBLY(DVD)<MN> ...................................3-7
VCR BOARD ASSEMBLY<03>............................................... 3-8
OPERATION BOARD ASSEMBLY<28> ................................3-12
DVD BOARD ASSEMBLY<50>..............................................3-12
REFERENCE
GENERAL SPECIFICATIONS[HR-XVC21UJ] .........................4-1