Rl-02A Loader Part - Zenith XBR411 Manual

ELECTRICAL TROUBLESHOOTING GUIDE
WAVEFORMS
...............................................................................................................................................................3-112
1. POWER & RESET SIGNAL......................................................................................................................................3-112
2. MAIN CLOCK1 FOR IC202 (16.9MHZ) ....................................................................................................................3-112
3. MAIN CLOCK2 FOR IC302 (20MHZ) .......................................................................................................................3-113
4. SDRAM CLOCK........................................................................................................................................................3-113
5. TRAY OPEN/CLOSE SIGNAL 1 ...............................................................................................................................3-114
6. TRAY OPEN/CLOSE SIGNAL 2 ...............................................................................................................................3-114
7. SLED MOVE SIGNAL 1............................................................................................................................................3-115
8. SLED MOVE SIGNAL 2............................................................................................................................................3-115
9. FOCUS SEARCH SIGNAL .......................................................................................................................................3-116
10. LASER TURN ON SIGNAL ....................................................................................................................................3-116
11. DISC TYPE JUDGEMENT WAVEFORM (CD SERIES) .........................................................................................3-117
12. DISC TYPE JUDGEMENT WAVEFORM (CD&CD-R)............................................................................................3-117
13. DISC TYPE JUDGEMENT WAVEFORM (CD-RW) ................................................................................................3-118
14. DISC TYPE JUDGEMENT WAVEFORM (DVD SERIES) ......................................................................................3-118
15. DISC TYPE JUDGEMENT WAVEFORM (DVD_SINGLE&R) ................................................................................3-119
16. DISC TYPE JUDGEMENT WAVEFORM (DVD _DUAL) ........................................................................................3-119
17. DISC TYPE JUDGEMENT WAVEFORM (DVDRW) ..............................................................................................3-120
18. SPINDLE WAVEFORM1 ........................................................................................................................................3-120
19. SPINDLE WAVEFORM2 ........................................................................................................................................3-121
20. FOCUS ON SIGNAL(CD).......................................................................................................................................3-121
21. FOCUS ON SIGNAL(CD).......................................................................................................................................3-122
22. FOCUS ON SIGNAL(DVD) ....................................................................................................................................3-122
23. FOCUS ON SIGNAL (DVD) ...................................................................................................................................3-123
24. TRACK OFF SIGNAL(CD) .....................................................................................................................................3-123
25. TRACK OFF SIGNAL(DVD) ...................................................................................................................................3-124
26. TILT DRIVER SIGNAL(DISC READING) ...............................................................................................................3-124
27. RF WAVEFORM(DVD) ...........................................................................................................................................3-125
28. RF WAVEFORM(CD) .............................................................................................................................................3-125
29. WOBBLE(DVD-R/RW)_READING .........................................................................................................................3-126
30. WOBBLE(DVD+R/RW)_READING&WRITING =>X1 SPEED ...............................................................................3-126
31. LD ENABLE(DVD) ..................................................................................................................................................3-127
32. LD ENABLE(CD) ....................................................................................................................................................3-127
33. LASER POWER(READING)_DVD+RW.................................................................................................................3-128
34. LASER POWER(ERASE)_DVD+RW .....................................................................................................................3-128
35. LASER POWER(WRITING)_INITIAL STATE .........................................................................................................3-129
36. LASER POWER(WRITING)_PROCESSING .........................................................................................................3-129
THE DIFFERENCE OF DVD-R/RW, DVD+R/RW DISCS AND DVD-ROM
1. RECORDING LAYER ...............................................................................................................................................3-130
2. DISC SPECIFICATION.............................................................................................................................................3-131
3. DISC MATERIALS ....................................................................................................................................................3-131
4. ORGANIZATION OF THE INNER DRIVE AREA, OUTER DRIVE AREA,
LEAD-IN ZONE AND LEAD-OUT ZONE..................................................................................................................3-135
5. ALPC(AUTOMATIC LASER POWER CONTROL) CIRCUIT ...................................................................................3-138
HOW TO USE TEST TOOL
BLOCK DIAGRAMS
1. OVERALL BLOCK DIAGRAM ..................................................................................................................................3-147
2. RF BLOCK DIAGRAM..............................................................................................................................................3-148
3. PSP BLOCK DIAGRAM ...........................................................................................................................................3-149
4. MICOM BLOCK DIAGRAM ......................................................................................................................................3-150
CIRCUIT DIAGRAMS
1. RF CIRCUIT DIAGRAM ..........................................................................................................................................3-151
2. DSP CIRCUIT DIAGRAM .........................................................................................................................................3-153
3. µ-COM CIRCUIT DIAGRAM.....................................................................................................................................3-155
CIRCUIT VOLTAGE CHART
PRINTED CIRCUIT DIAGRAMS
1. MAIN P.C.BOARD ...................................................................................................................................................3-159
2. MAIN P.C.BOARD ...................................................................................................................................................3-161

RL-02A LOADER PART

CONTENTS
.....................................................................................................................................3-139
.................................................................................................................................................3-147
................................................................................................................................................3-151
...................................................................................................................................3-157
............................................................................................................................3-159
....................................................................................................3-98
............................................3-130