- 4-25 -
MECHANISM TROUBLESHOOTING GUIDE
In PB mode Tape Presence
not sensed.
Is the Pinch Roller attached
to the Capstan Motor Shaft?
Check Alignment positions
(page 4-13).
Does the T/Up Reel turn?
Replace the Belt.
Is the Belt ok?
Does the Drum Motor turn?
Are there DPG, DFG pulses?
Are the T/Up and Supply Reel
Sensors ok?
Check the Syscon, Circuit.
Check the Syscon, Circuit.
Check the Servo, Syscon.
Does the Capstan Motor turn?
Is the terminal voltage(vctl) of the
Drum Motor more than 4V?
Replace the
Drum Motor.
Is the Vcc voltage of the Drum
Motor normal?
Check the Clutch and Idler
Assembly.
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Is the terminal voltage(vctl) of
Capstan Motor supplied more
than 4V?
Replace the Capstan Motor.
Is the voltage supplied to the
Capstan Motor Vcc1,Vcc2 each?
YES
YES
YES
Check the Servo, Power.
NO
NO
NO
E.
Summary of Contents for XBS341 Series
Page 1: ...SERVICE MANUAL MODELS XBS341...
Page 10: ...2 1 SECTION 2 AUDIO PART...
Page 12: ...3 2 VCR ELECTRICAL TROULBESHOOTING...
Page 13: ...3 3...
Page 27: ...SECTION 4 MECHANSIM OF VCR PART...
Page 39: ...4 12...
Page 41: ...4 14...
Page 51: ...4 24...
Page 58: ...5 1 DVD ELECTRICAL TROUBLESHOOTING 1 Test debug flow SECTION 5 DVD PART...
Page 59: ...5 2...
Page 60: ...5 3...
Page 61: ...5 4...
Page 62: ...5 5...
Page 63: ...5 6...
Page 67: ...5 10 2 Tray close waveform 3 Tray open waveform...
Page 69: ...5 12 6 LASER POWER CONTROL RELATED SIGNAL NO DISC CONDITION 7 DISC TYPE JUDGEMENT WAVEFORM...
Page 70: ...5 13...
Page 71: ...5 14 8 FOCUS ON WAVEFORM...
Page 72: ...5 15 9 SPINDLE CONTROL WAVEFORM NO DISC CONDITION...
Page 73: ...5 16 10 TRACKING CONTROL RELATED SIGNAL System checking...
Page 74: ...5 17 11 RF WAVEFORM 12 MT1379 AUDIO OPTICAL AND COAXIAL OUTPUT ASPDIF...
Page 75: ...5 18 13 MT1379 VIDEO OUTPUT WAVEFORM 1 Full colorbar signal CVBS 2 Y...
Page 76: ...5 19 3 C 14 AUDIO OUTPUT FORM AUDIO DAC 1 Audio related Signal...
Page 77: ...5 20 MEMO...
Page 80: ...2 2 2 3 BLOCK DIAGRAM...
Page 81: ...2 4 2 5 AUDIO SHEMATIC DIAGRAMS U COM SCHEMATIC DIAGRAM...
Page 82: ...2 6 2 7 FUNCTION POWER SCHEMATIC DIAGRAM...
Page 83: ...2 8 2 9 MAIN AMP SCHEMATIC DIAGRAM...
Page 84: ...2 10 2 11 WIRING DIAGRAM...
Page 86: ...2 14 2 15 PRINTED CIRCUIT DIAGRAM MAINAMP FRONT P C BOARD SOLDER SIDE...
Page 87: ...2 16 2 17 MAINAMP FRONT P C BOARD COMPONENT SIDE...
Page 88: ...2 18 2 19 FUNCTION POWER P C BOARD SOLDER SIDE...
Page 89: ...2 20 2 21 FUNCTION POWER P C BOARD COMPONENT SIDE...
Page 90: ...3 17 3 18 VCR SHEMATIC DIAGRAMS SYSTEM SCHEMATIC DIAGRAM...
Page 91: ...3 19 3 20 A AUDIO V VIDEO SCHEMATIC DIAGRAM...
Page 93: ...3 23 3 24 HIFI TUNER SCHEMATIC DIAGRAM...
Page 94: ...3 25 3 26 A V JACK SCART SCHEMATIC DIAGRAM...
Page 96: ...3 29 3 30 PRINTED CIRCUIT DIAGRAMS TUNER P C BOARD...
Page 97: ...3 31 3 32 VCR P C BOARD...
Page 98: ...3 33 3 34 VCR P C BOARD...
Page 99: ...5 22 5 21 DVD PART SCHEMATIC DIAGRAMS MPEG SCHEMATIC DIAGRAM...
Page 100: ...5 23 5 24 SERVO SCHEMATIC DIAGRAM...
Page 101: ...5 25 5 26 AUDIO SCHEMATIC DIAGRAM...
Page 102: ...5 27 5 28 INTERFACE SCHEMATIC DIAGRAM...
Page 103: ...5 29 5 30 VOLTAGE SHEET IC TR...
Page 104: ...5 31 5 32 PRINTED CIRCUIT DIAGRAM DVD P C BOARD SOLDER SIDE...
Page 105: ...5 33 5 34 DVD P C BOARD COMPONENT SIDE...
Page 107: ...MEMO MEMO...
Page 109: ...MEMO MEMO...
Page 115: ......