3-1
SECTION 3
ELECTRICAL
CONTENTS
OVERALL WIRING DIAGRAM
..............................3-2
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. OSD CIRCUIT .......................................................3-10
5. Y/C CIRCUIT .........................................................3-11
6. Hi-Fi CIRCUIT .......................................................3-13
7. Tuner/IF CIRCUIT .................................................3-18
BLOCK DIAGRAMS
................................................3-20
1. Power (SMPS) BLOCK DIAGRAM ......................3-20
2. TU/IF BLOCK DIAGRAM......................................3-22
3. Y/C BLOCK DIAGRAM.........................................3-24
4. NORMAL AUDIO BLOCK DIAGRAM ..................3-26
5. Hi-Fi BLOCK DIAGRAM.......................................3-28
6. SYSTEM BLOCK DIAGRAM ................................3-30
CIRCUIT DIAGRAMS
..............................................3-32
1. Power (SMPS) CIRCUIT DIAGRAM ....................3-32
2. TU/IF CIRCUIT DIAGRAM ....................................3-34
3. A/V CIRCUIT DIAGRAM .......................................3-36
4. Hi-Fi CIRCUIT DIAGRAM .....................................3-38
5. JACK CIRCUIT DIAGRAM ...................................3-40
6. SYSTEM CIRCUIT DIAGRAM ..............................3-42
7. TIMER CIRCUIT DIAGRAM(XBV343) ..................3-44
8. TIMER CIRCUIT DIAGRAM(XBV342) ..................3-46
• WAVEFORMS .........................................................3-48
• CIRCUIT VOLTAGE CHART ..................................3-50
PRINTED CIRCUIT DIAGRAMS
.........................3-52
1. MAIN P.C.BOARD .................................................3-52
2. KEY 1(LEFT) P.C.BOARD ....................................3-54
3. KEY 2(RIGHT) P.C.BOARD ..................................3-54
4. POWER P.C.BOARD ............................................3-56
DVD PART(NS MODEL)
ELECTRICAL TROUBLESHOOTING
GUIDE
...........................................................................3-58
1. µ-COM CIRCUIT....................................................3-58
2. MPEG CIRCUIT.....................................................3-61
3. RF/Servo CIRCUIT ...............................................3-62
BLOCK DIAGRAMS
................................................3-66
1. DVD OVERALL BLOCK DIAGRAM .....................3-66
2. RF/CD DSP/DVD DSP/DVD SERVO BLOCK
DIAGRAM..............................................................3-67
3. Audio BLOCK DIAGRAM.....................................3-68
4. MEMORY BLOCK DIAGRAM...............................3-69
CIRCUIT DIAGRAMS
..............................................3-70
1. DVD DSP CIRCUIT DIAGRAM .............................3-70
2. DRIVE & RF CIRCUIT DIAGRAM ........................3-72
3. MEMORY CIRCUIT DIAGRAM .............................3-74
4. INTERFACE CIRCUIT DIAGRAM.........................3-76
5. µ-COM/Expander CIRCUIT DIAGRAM ................3-78
6. Jack CIRCUIT DIAGRAM .....................................3-80
• WAVEFORMS .........................................................3-82
• CIRCUIT VOLTAGE CHART ..................................3-84
PRINTED CIRCUIT DIAGRAMS
.........................3-90
1. MAIN P.C.BOARD (TOP VIEW)............................3-90
2. MAIN P.C.BOARD (BOTTOM VIEW)....................3-92
DVD PART(MTK MODEL)
ELECTRICAL TROUBLESHOOTING
GUIDE & WAVEFORMS
........................................3-94
1. SYSTEM OPERATION FLOW ..............................3-94
2. TEST & DEBUG FLOW ........................................3-95
DETAILS AND WAVEFORMS ON
SYSTEM TEST AND DEBUGGING
.................3-101
1. SYSTEM 27MHZ CLOCK,
RESET, FLASH R/W SIGNAL ............................3-101
2. SDRAM CLOCK..................................................3-101
3. TRAY OPEN/CLOSE SIGNAL ............................3-102
4. SLED CONTROL RELATED SIGNAL
(NO DISC CONDITION) ......................................3-105
5. LENS CONTROL RELATED SIGNAL
(NO DISC CONDITION) ......................................3-105
6. LASER POWER CONTROL RELATED
SIGNAL(NO DISC CONDITION).........................3-106
7. DISC TYPE JUDGEMENT WAVEFORM ............3-106
8. FOCUS ON WAVEFORM....................................3-108
9. SPINDLE CONTROL WAVEFORM
(NO DISC CONDITION) ......................................3-109
10. TRACKING CONTROL RELATED
SIGNAL(SYSTEM CHECKING) ........................3-110
11. RF WAVEFORM.................................................3-111
12. MT1379 AUDIO OPTICAL AND COAXIAL
OUTPUT (ASPDIF)............................................3-111
13. MT1379 VIDEO OUTPUT WAVEFORM............3-112
14. AUDIO OUTPUT FROM AUDIO DAC...............3-113
BLOCK DIAGRAMS
..............................................3-115
1. OVERALL BLOCK DIAGRAM............................3-115
2. SERVO BLOCK DIAGRAM ................................3-116
3. MPEG & MEMORY BLOCK DIAGRAM..............3-117
4. VIDEO & AUDIO BLOCK DIAGRAM .................3-118
CIRCUIT DIAGRAMS
........................................3-119
1. SYSTEM CIRCUIT DIAGRAM ............................3-119
2. RF & DSP SERVO CIRCUIT DIAGRAM ............3-121
3. AUDIO CIRCUIT DIAGRAM ...............................3-123
4. AV/JACK CIRCUIT DIAGRAM............................3-125
• CIRCUIT VOLTAGE CHART ................................3-127
PRINTED CIRCUIT DIAGRAMS
.......................3-131
1. MAIN P.C.BOARD ...............................................3-131
Содержание ABV341 Series
Страница 2: ......
Страница 36: ...3 34 3 35 2 TU IF CIRCUIT DIAGRAM PB REC...
Страница 39: ...3 40 3 41 5 JACK CIRCUIT DIAGRAM...
Страница 41: ...3 44 3 45 7 TIMER CIRCUIT DIAGRAM XBV343...
Страница 42: ...3 46 3 47 8 TIMER CIRCUIT DIAGRAM XBV342...
Страница 45: ...3 52 3 53 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE...
Страница 65: ...02 12 04 R17149A ZENITH DAP202K 3 80 3 81 6 JACK CIRCUIT DIAGRAM...
Страница 70: ...LOCATION GUIDE 3 90 3 91 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP VIEW...
Страница 71: ...LOCATION GUIDE 3 92 3 93 2 MAIN P C BOARD BOTTOM VIEW...
Страница 92: ...3 114 2 Audio related Signal ASDAT3 IC501 PIN 157 ABCK IC501 PIN 148 ALRCK IC501 PIN 149 ASDATA3 FIG 14 2...
Страница 98: ...3 121 3 122 2 RF DSP SERVO CIRCUIT DIAGRAM CD DVD LD will not on COMBI SCART MTK 03 3 25 SR17445A...
Страница 99: ...3 123 3 124 3 AUDIO CIRCUIT DIAGRAM COMBI SCART MTK 03 3 25 SR17447A...
Страница 100: ...3 125 3 126 4 AV JACK CIRCUIT DIAGRAM COMBI SCART MTK 03 3 25 SR17446A...
Страница 103: ...3 131 3 132 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE...
Страница 110: ...EXPLODED VIEW 1 Deck Mechanism Exploded View 5 1 CONTENTS SECTION 5 MECHANISM OF DVD PART MTK MODEL...
Страница 134: ...4 22 GEAR F R GEAR AY P2 P3 F R Lever Tension Base Boss CAM...