- 3-15 -
6. Tuner/IF CIRCUIT
(A) No Picture on the TV screen
No picture on the TV
screen
Does the Video signal at
the TU701 Pin24.
YES
YES
YES
Is +33V applied to TU701
Pin16?
YES
Is +5V applied to TU701
Pin13?
NO
Does Sync appear at
IC501 Pin111.
NO
Does the Video signal at
the IC501 Pin19.
YES
NO
Does the Video signal at
the IC301 Pin61.
YES
NO
NO
Does the Video signal at
the IC802 Pin30.
Check the signal flow from IC802
Pin30 to SC901 Pin19.
YES
Check 33V line.
NO
Check 5V line.
NO
YES
Does the Clock signal
appear at TU701 Pin11?
Check the lIC Clock Signal
of -COM
Pin59.
NO
YES
Does the data signal
appear at TU701 Pin12?
Replace Tuner.
Check the signal flow from
TU701 Pin24 to IC301 Pin48.
Check the signal from IC301
Pin65 to IC501 Pin17.
Check the signal from IC501
Pin19 to IC301 Pin56.
Check the signal from IC501
Pin61 to IC802 Pin1.
Check the lIC Data Signal
of -COM
Pin60.
NO
Содержание XBS341 Series
Страница 1: ...SERVICE MANUAL MODELS XBS341...
Страница 10: ...2 1 SECTION 2 AUDIO PART...
Страница 12: ...3 2 VCR ELECTRICAL TROULBESHOOTING...
Страница 13: ...3 3...
Страница 27: ...SECTION 4 MECHANSIM OF VCR PART...
Страница 39: ...4 12...
Страница 41: ...4 14...
Страница 51: ...4 24...
Страница 58: ...5 1 DVD ELECTRICAL TROUBLESHOOTING 1 Test debug flow SECTION 5 DVD PART...
Страница 59: ...5 2...
Страница 60: ...5 3...
Страница 61: ...5 4...
Страница 62: ...5 5...
Страница 63: ...5 6...
Страница 65: ...5 8 3 RS232 waveform during procedure Downloading 4 Flash R W enable signal during download Downloading...
Страница 66: ...5 9 2 SDRAM CLOCK 1 MT1379 main clock is at 27MHz X501 3 TRAY OPEN CLOSE SIGNAL 1 Tray open close waveform...
Страница 67: ...5 10 2 Tray close waveform 3 Tray open waveform...
Страница 68: ...5 11 4 SLED CONTROL RELATED SIGNAL NO DISC CONDITION 5 LENS CONTROL RELATED SIGNAL NO DISC CONDITION...
Страница 69: ...5 12 6 LASER POWER CONTROL RELATED SIGNAL NO DISC CONDITION 7 DISC TYPE JUDGEMENT WAVEFORM...
Страница 70: ...5 13...
Страница 71: ...5 14 8 FOCUS ON WAVEFORM...
Страница 72: ...5 15 9 SPINDLE CONTROL WAVEFORM NO DISC CONDITION...
Страница 73: ...5 16 10 TRACKING CONTROL RELATED SIGNAL System checking...
Страница 74: ...5 17 11 RF WAVEFORM 12 MT1379 AUDIO OPTICAL AND COAXIAL OUTPUT ASPDIF...
Страница 75: ...5 18 13 MT1379 VIDEO OUTPUT WAVEFORM 1 Full colorbar signal CVBS 2 Y...
Страница 76: ...5 19 3 C 14 AUDIO OUTPUT FORM AUDIO DAC 1 Audio related Signal...
Страница 77: ...5 20 MEMO...
Страница 80: ...2 2 2 3 BLOCK DIAGRAM...
Страница 81: ...2 4 2 5 AUDIO SHEMATIC DIAGRAMS U COM SCHEMATIC DIAGRAM...
Страница 82: ...2 6 2 7 FUNCTION POWER SCHEMATIC DIAGRAM...
Страница 83: ...2 8 2 9 MAIN AMP SCHEMATIC DIAGRAM...
Страница 84: ...2 10 2 11 WIRING DIAGRAM...
Страница 86: ...2 14 2 15 PRINTED CIRCUIT DIAGRAM MAINAMP FRONT P C BOARD SOLDER SIDE...
Страница 87: ...2 16 2 17 MAINAMP FRONT P C BOARD COMPONENT SIDE...
Страница 88: ...2 18 2 19 FUNCTION POWER P C BOARD SOLDER SIDE...
Страница 89: ...2 20 2 21 FUNCTION POWER P C BOARD COMPONENT SIDE...
Страница 90: ...3 17 3 18 VCR SHEMATIC DIAGRAMS SYSTEM SCHEMATIC DIAGRAM...
Страница 91: ...3 19 3 20 A AUDIO V VIDEO SCHEMATIC DIAGRAM...
Страница 93: ...3 23 3 24 HIFI TUNER SCHEMATIC DIAGRAM...
Страница 94: ...3 25 3 26 A V JACK SCART SCHEMATIC DIAGRAM...
Страница 96: ...3 29 3 30 PRINTED CIRCUIT DIAGRAMS TUNER P C BOARD...
Страница 97: ...3 31 3 32 VCR P C BOARD...
Страница 98: ...3 33 3 34 VCR P C BOARD...
Страница 99: ...5 22 5 21 DVD PART SCHEMATIC DIAGRAMS MPEG SCHEMATIC DIAGRAM...
Страница 100: ...5 23 5 24 SERVO SCHEMATIC DIAGRAM...
Страница 101: ...5 25 5 26 AUDIO SCHEMATIC DIAGRAM...
Страница 102: ...5 27 5 28 INTERFACE SCHEMATIC DIAGRAM...
Страница 103: ...5 29 5 30 VOLTAGE SHEET IC TR...
Страница 104: ...5 31 5 32 PRINTED CIRCUIT DIAGRAM DVD P C BOARD SOLDER SIDE...
Страница 105: ...5 33 5 34 DVD P C BOARD COMPONENT SIDE...
Страница 107: ...MEMO MEMO...
Страница 109: ...MEMO MEMO...
Страница 115: ......