Zenith XBV613 Service Manual - Page 12

SECTION 3 ELECTRICAL VCR PART CONTENTS DVD PART ELECTRICAL ADJUSTMENT PROCEDURES 3-2 ELECTRICAL TROUBLESHOOTING GUIDE 3-3 1. POWER(SMPS) CIRCUIT 3-3 2. SYSTEM/KEY CIRCUIT 3-6 3. SERVO CIRCUIT 3-7 4. OSD CIRCUIT 3-9 5. Y/C CIRCUIT 3-10 6. HI-FI CIRCUIT 3-14 7. TUNER/IF CIRCUIT 3-17 BLOCK DIAGRAMS 3-19 1. POWER(SMPS) BLOCK DIAGRAM 3-19 2. TU/IF BLOCK DIAGRAM 3-21 3. Y/C BLOCK DIAGRAM 3-23 4. NORMAL AUDIO BLOCK DIAGRAM 3-25 5. HI-FI BLOCK DIAGRAM 3-27 6. SYSTEM BLOCK DIAGRAM 3-29 CIRCUIT DIAGRAMS 3-31 1. POWER(SMPS) CIRCUIT DIAGRAM 3-31 2. TU/IF CIRCUIT DIAGRAM 3-33 3. A/V CIRCUIT DIAGRAM 3-35 4. HI-FI CIRCUIT DIAGRAM 3-37 5. JACK CIRCUIT DIAGRAM 3-39 6. SYSTEM CIRCUIT DIAGRAM 3-41 • WAVEFORMS 3-43 • CIRCUIT VOLTAGE CHART 3-45 PRINTED CIRCUIT DIAGRAMS 3-49 1. MAIN P.C.BOARD (TOP SIDE 3-49 2. MAIN P.C.BOARD (BOTTOM SIDE 3-51 3. POWER P.C.BOARD 3-53 4. KEY P.C.BOARD 3-55 ELECTRICAL TROUBLESHOOTING GUIDE 3-57 1. POWER CHECK FLOW 3-57 2. SYSTEM OPERATION FLOW 3-58 3. TEST & DEBUG FLOW 3-59 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 3-65 1. SYSTEM 27MHZ CLOCK, RESET SIGNAL ...3-65 2. SDRAM CLOCK 3-66 3. TRAY OPEN/CLOSE SIGNAL 3-66 4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION 3-68 5. LENS CONTROL RELATED SIGNAL (NO DISC CONDITION 3-68 6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION 3-69 7. DISC TYPE JUDGEMENT WAVEFORM.........3-69 8. FOCUS ON WAVEFORM 3-71 9. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION 3-72 10. TRACKING CONTROL RELATED SIGNAL(SYSTEM CHECKING 3-73 11. RF WAVEFORM 3-74 12. ZR36882 AUDIO OPTICAL AND COAXIAL OUTPUT(SPDIF 3-74 13. ZR36882 VIDEO OUTPUT WAVEFORM.......3-75 14. AUDIO OUTPUT FROM AUDIO DAC ...........3-76 BLOCK DIAGRAMS 3-78 1. SYSTEM BLOCK DIAGRAM 3-78 2. SERVO BLOCK DIAGRAM 3-79 3. AUDIO & VIDEO IN/OUT BLOCK DIAGRAM 3-80 CIRCUIT DIAGRAMS 3-81 1. SYSTEM CIRCUIT DIAGRAM 3-81 2. SERVO CIRCUIT DIAGRAM 3-83 3. AV/JACK CIRCUIT DIAGRAM 3-85 3-1