3-1
SECTION 3
ELECTRICAL
CONTENTS
ELECTRICAL TROUBLESHOOTING GUIDE
......................................................................3-2
1. POWER CHECK FLOW............................................................................................................3-2
2. SYSTEM OPERATION FLOW ..................................................................................................3-3
3. TEST & DEBUG FLOW ............................................................................................................3-4
4. KARAOKE FLOW (KARAOKE MODEL ONLY).....................................................................3-10
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING
....................3-11
1. SYSTEM 27MHZ CLOCK, RESET SIGNAL...........................................................................3-11
2. SDRAM CLOCK ......................................................................................................................3-12
3. TRAY OPEN/CLOSE SIGNAL ................................................................................................3-12
4. SLED CONTROL RELATED SIGNAL(NO DISC CONDITION) .............................................3-14
5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION) .............................................3-14
6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION) ............................3-15
7. DISC TYPE JUDGEMENT WAVEFORM ................................................................................3-15
8. FOCUS ON WAVEFORM........................................................................................................3-17
9. SPINDLE CONTROL WAVEFORM(NO DISC CONDITION ...................................................3-18
10. TRACKING CONTROL RELATED SIGNAL(SYSTEM CHECKING) ...................................3-19
11. RF WAVEFORM ....................................................................................................................3-20
12. ZR36888 AUDIO OPTICAL AND COAXIAL OUTPUT(SPDIF) ............................................3-20
13. ZR36888 VIDEO OUTPUT WAVEFORM ..............................................................................3-21
14. AUDIO OUTPUT FROM AUDIO DAC ..................................................................................3-22
BLOCK DIAGRAMS
..................................................................................................................3-24
1. OVERALL BLOCK DIAGRAM................................................................................................3-24
2. POWER(SMPS) BLOCK DIAGRAM.......................................................................................3-25
3. SERVO BLOCK DIAGRAM ....................................................................................................3-26
4. MPEG & MEMORY BLOCK DIAGRAM .................................................................................3-27
5. VIDEO & AUDIO BLOCK DIAGRAM .....................................................................................3-28
CIRCUIT DIAGRAMS
................................................................................................................3-29
1. POWER(SMPS) CIRCUIT DIAGRAM.....................................................................................3-29
2. SYSTEM(MAIN) CIRCUIT DIAGRAM.....................................................................................3-31
3. SERVO CIRCUIT DIAGRAM ..................................................................................................3-33
4. AV/JACKCIRCUIT DIAGRAM.................................................................................................3-35
5. MEMORY CARD CIRCUIT DIAGRAM ...................................................................................3-37
6. TIMER CIRCUIT DIAGRAM....................................................................................................3-39
7. KARAOKE CIRCUIT DIAGRAM (KARAOKE MODEL ONLY) ..............................................3-41
• CIRCUIT VOLTAGE CHART ....................................................................................................3-43
PRINTED CIRCUIT DIAGRAMS
............................................................................................3-45
1. MAIN P.C.BOARD ...................................................................................................................3-45
2. KEY P.C.BOARD.....................................................................................................................3-47
3. TIMER P.C.BOARD .................................................................................................................3-48
4. SCART P.C.BOARD................................................................................................................3-49
5. SMPS P.C.BOARD ..................................................................................................................3-50
6. KARAOKE P.C.BOARD(KARAOKE MODEL ONLY)(6, 7, 9 TOOL) .....................................3-51
Summary of Contents for T515C
Page 27: ...3 16 FIG 7 2 DVD FIG 7 3 CD FACT FACT FE FE SBAD SBAD ...
Page 28: ...3 17 FIG 7 4 CD 8 FOCUS ON WAVEFORM FIG 8 1 DVD FE FOSO FACT FACT FACT FE SBAD ...
Page 34: ...3 23 2 Audio Related Signal FIG 14 2 AOUT0 ABCK ALRCLK ...
Page 48: ...3 45 3 46 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...
Page 49: ...3 47 3 48 2 KEY P C BOARD 3 TIMER P C BOARD TOP VIEW BOTTOM VIEW TOP VIEW BOTTOM VIEW ...
Page 51: ...3 51 3 52 6 KARAOKE P C BOARD KARAOKE MODEL ONLY 6 7 9 TOOL ...