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OVERALL BLOCK DIAGRAM
..........................................................3-3
...........................................................................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
..............................................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
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
7. TIMER CIRCUIT DIAGRAM ..................................3-42
• WAVEFORM & VOLTAGE SHEET .........................3-44
• CIRCUIT VOLTAGE CHART...................................3-46
1. MAIN P.C.BOARD .................................................3-50
2. SMPS P.C.BOARD ...............................................3-52
3. TIMER P.C.BOARD ..............................................3-52
4. KEY P.C.BOARD ..................................................3-53
SECTION 3
ELECTRICAL
CONTENTS
.............................3-2
............................................3-30
.......................3-50
GUIDE & WAVEFORMS
1. SYSTEM OPERATION FLOW ..............................3-54
2. TEST & DEBUG FLOW ........................................3-55
RESET, FLASH R/W SIGNAL...............................3-61
2. SDRAM CLOCK ....................................................3-61
3. TRAY OPEN/CLOSE SIGNAL ..............................3-62
(NO DISC CONDITION) ........................................3-65
(NO DISC CONDITION) ........................................3-65
SIGNAL(NO DISC CONDITION)...........................3-66
7. DISC TYPE JUDGEMENT WAVEFORM ..............3-66
8. FOCUS ON WAVEFORM ......................................3-68
(NO DISC CONDITION) ........................................3-69
SIGNAL(SYSTEM CHECKING) ..........................3-70
11. RF WAVEFORM ..................................................3-71
OUTPUT (ASPDIF)..............................................3-71
13. MT1379 VIDEO OUTPUT WAVEFORM..............3-72
14. AUDIO OUTPUT FROM AUDIO DAC.................3-73
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
1. SYSTEM CIRCUIT DIAGRAM ..............................3-79
2. RF & DSP SERVO CIRCUIT DIAGRAM...............3-81
3. AUDIO CIRCUIT DIAGRAM..................................3-83
4. AV/JACK CIRCUIT DIAGRAM..............................3-85
• CIRCUIT VOLTAGE CHART...................................3-87
1. MAIN P.C.BOARD .................................................3-91
3-1
.......................................3-54
.................3-61
..............................................3-75
............................................3-79
.......................3-91
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