Philips DVP721VR - Section 3 Electrical; Default Chapter; Table of Contents

3-1
SECTION 3
ELECTRICAL
CONTENTS
OVERALL BLOCK 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. Y/C CIRCUIT ...........................................................3-9
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............................................3-30
1. Power(SMPS) CIRCUIT DIAGRAM 1...................3-30
2. Power(SMPS) CIRCUIT DIAGRAM 2...................3-32
3. TU/IF, NICAM & A2 CIRCUIT DIAGRAM .............3-34
4. A/V CIRCUIT DIAGRAM .......................................3-36
5. Hi-Fi CIRCUIT DIAGRAM .....................................3-38
6. SCART(JACK) CIRCUIT DIAGRAM ....................3-40
7. SYSTEM CIRCUIT DIAGRAM ..............................3-42
• WAVEFORM & VOLTAGE SHEET .........................3-44
• CIRCUIT VOLTAGE CHART...................................3-46
PRINTED CIRCUIT DIAGRAMS .......................3-50
1. MAIN P.C.BOARD (VCR+DVD)_
SOLDER SIDE.......................................................3-50
2. MAIN P.C.BOARD (VCR+DVD)_
COMPONENT SIDE ..............................................3-52
3. SMPS P.C.BOARD ...............................................3-54
DVD PART
ELECTRICAL TROUBLESHOOTING
GUIDE
.........................................................................3-56
1. SYSTEM OPERATION FLOW ..............................3-56
2. SYSTEM TEST FLOW ..........................................3-57
DETAILS AND WAVEFORMS ON SYSTEM
TEST AND DEBUGGING
....................................3-63
1. SYSTEM 27MHZ CLOCK, RESET,
FLASH R/W SIGNAL ............................................3-63
2. SDRAM CLOCK ....................................................3-65
3. TRAY OPEN/CLOSE SIGNAL ..............................3-65
4. SLED CONTROL RELATED SIGNAL
(NO DISC CONDITION) ........................................3-66
5. LENS CONTROL RELATED SIGNAL
(NO DISC CONDITION) ........................................3-66
6. LASER POWER CONTROL RELATED
SIGNAL(NO DISC CONDITION)...........................3-67
7. DISC TYPE JUDGEMENT WAVEFORM ..............3-67
8. FOCUS ON WAVEFORM ......................................3-69
9. SPINDLE CONTROL WAVEFORM
(NO DISC CONDITION) ........................................3-70
10. TRACKING CONTROL RELATED
SIGNAL(SYSTEM CHECKING) ..........................3-71
11. MT1389 AUDIO OPTICAL AND COAXIAL
OUTPUT(SPDIF) .................................................3-72
12. MT1389 VIDEO OUTPUT WAVEFORM..............3-72
13. MT1389 AUDIO OUTPUT TO AUDIO DAC ........3-73
14. AUDIO OUTPUT FROM AUDIO DAC.................3-74
BLOCK DIAGRAMS..............................................3-75
1. OVERALL BLOCK DIAGRAM..............................3-75
2. SERVO BLOCK DIAGRAM ..................................3-76
3. MPEG & MEMORY BLOCK DIAGRAM ...............3-77
4. VIDEO & AUDIO BLOCK DIAGRAM ...................3-78
CIRCUIT DIAGRAMS............................................3-79
1. SYSTEM CIRCUIT DIAGRAM ..............................3-79
2. RF & DSP SERVO CIRCUIT DIAGRAM...............3-81
3. AV/JACK CIRCUIT DIAGRAM..............................3-73
• CIRCUIT VOLTAGE CHART...................................3-85