Table Of Contents - JVC HR-XV2EX Service Manual

OVERALL BLOCK DIAGRAM
VCR PART
ELECTRICAL ADJUSTMENT
PROCEDURES
..........................................................3-3
ELECTRICAL TROUBLESHOOTING
GUIDE
...........................................................................3-4
1. POWER(SMPS) CIRCUIT .......................................3-4
2. SYSTEM/KEY CIRCUIT ..........................................3-7
3. SERVO CIRCUIT.....................................................3-8
4. Y/C CIRCUIT..........................................................3-11
5. Hi-Fi CIRCUIT .......................................................3-15
6. Tuner/IF CIRCUIT .................................................3-18
BLOCK DIAGRAMS
..............................................3-20
1. Power(SMPS) BLOCK DIAGRAM .......................3-20
2. Tu/IF, NICAM & A2 BLOCK DIAGRAM................3-22
3. VPS BLOCK DIAGRAM........................................3-23
4. Y/C BLOCK DIAGRAM .........................................3-24
5. Hi-Fi BLOCK DIAGRAM .......................................3-26
6. SYSTEM BLOCK DIAGRAM ................................3-28
CIRCUIT DIAGRAMS
1. Power(SMPS) CIRCUIT DIAGRAM......................3-30
2. TU/IF, NICAM & A2 CIRCUIT DIAGRAM .............3-32
3. A/V CIRCUIT DIAGRAM .......................................3-34
4. Hi-Fi CIRCUIT DIAGRAM .....................................3-36
5. SCART(JACK) CIRCUIT DIAGRAM ....................3-38
6. SYSTEM CIRCUIT DIAGRAM ..............................3-40
• WAVEFORM & VOLTAGE SHEET .........................3-42
• CIRCUIT VOLTAGE CHART...................................3-44
PRINTED CIRCUIT DIAGRAMS
1. MAIN P.C.BOARD .................................................3-48
2. SMPS P.C.BOARD ...............................................3-50
SECTION 3
ELECTRICAL
CONTENTS
.............................3-2
............................................3-30
.......................3-48
DVD PART
ELECTRICAL TROUBLESHOOTING
GUIDE & WAVEFORMS
1. System Clock X501 (27Mhz) ...............................3-52
2. Initializing between MPEG and SDRAM ............3-52
3. Initializing between MPEG and Flash ................3-53
4. Reference Voltage 1.............................................3-53
5. Reference Voltage 2.............................................3-54
6. Checking the initial step of M/D Ass'y...............3-54
7. Checking the Video Signal..................................3-55
8. Checking the first step of servo (1) ...................3-55
9. Checking the second step of servo (2) .............3-56
10. Checking the output of Audio signal ...............3-56
11. Checking the reset port.....................................3-57
12. Checking the focus & tracking servo ..............3-57
13. Checking the track jump ...................................3-58
14. The status of CD_LD and DVD_LD in the
PLAY MODE ........................................................3-58
15. The status Focus and spindle motor...............3-59
16. DATA STREAM ...................................................3-59
17. Input Clock to IC202 ..........................................3-60
18. Tray Open and Close .........................................3-60
19. Focus Drive signal(FACT) .................................3-61
20. Signals for Front micom ...................................3-61
21. FACT and FE for DVD9 (Dual disc) ..................3-62
22. System clock of MPEG IC .................................3-62
BLOCK DIAGRAMS
1. DVD Overall Block Diagram................................3-63
2. SERVO Block Diagram ........................................3-64
3. MPEG Block Diagram ..........................................3-65
4. AUDIO Block Diagram .........................................3-66
CIRCUIT DIAGRAMS
1. RD SERVO CIRCUIT DIAGRAM ..........................3-67
2. SYSTEM CIRCUIT DIAGRAM ..............................3-69
3. AUDIO CIRCUIT DIAGRAM..................................3-71
4. INTERFACE CIRCUIT DIAGRAM.........................3-73
• CIRCUIT VOLTAGE CHART...................................3-75
PRINTED CIRCUIT DIAGRAMS
1. MAIN P.C.BOARD (TOP VIEW) ............................3-79
2. MAIN P.C.BOARD (BOTTOM VIEW)....................3-81
3-1
.......................................3-52
..............................................3-63
............................................3-67
.......................3-79