- 3-9 -
(2) When the Y(Luminance) signal doesn t appear on the screen in PB Mode,
Is 5.2VT, 5.3VA applied to the
IC301 Pins24, 42, 55, 72, 91?
Is the I
2
C Bus siganl applied
to the IC301 Pins68, 69 ?
Does the normal RF signal
appear at the IC301 Pin78?
Check the line of the 5.2VT,
5.3VA Line. (Power Circuit)
Check the System Circuit.
(IC501 Pin105)
Check the V.H.S/W level.
(Check R303, R304)
Replace the IC301.
Refer to SYSTEM I
2
C BUS
CHECK Trouble Shooting .
Is the V.H.S/W signal
applied to the IC301 Pin70?
Is V.H.S/W H about 3.4V
at the IC301 Pin70?
Clean the Drum.
Check the path of the
Y(Luminance) RF signal.
(Check C327)
Check the path of the
Y(Luminance) RF signal.
(Check the C312)
Does the Y(Luminance) RF
signal appear at the IC301
Pin76?
Is the Y(Luminance) Video
waveform showed up at
theIC301 Pin43?
Replace the IC301.
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
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: ......