Zenith C32V23 - 32" Flat-Screen Integrated HDTV, Руководство по обслуживанию

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PV154 - 923-03497
3-16
AB - SERVICING
SERVICING
TROUBLESHOOTING
No Video, Raster and H.V. OK (main module)
Check CV on
Q1206 Emitter
Check IIC
(Pins 5 and 6) and 5
(Pin 4) of WT1200
Check CV
Tuner,CV1,CV2, or
CV Front on
C2925 negative
lead.
Check 9V AVS on C2920
positive lead and IIC.
Check CV1,CV2, or CV Front
Sense Voltages.
Check Y/C1,Y/C2, or Y/C Front
Sense Voltages
Check Y on Q2904
Base.
Input Y/C1,Y/C2, or
Y/C Front video
signals.
No
No
No
Yes
Yes
Yes
Yes
CV = Composite Video
Y/C = S-Video
Note:
Input CV1,CV2 or CV
Front video signals
Input NTSC RF
signal
Check Y on C2719
positive lead.
Replace Digital
Board
Check Y on C2201
positive lead.
Check 5V sw1 on +C2710,Check 5V
SYNF on +C2723,Check 5V sw2 on
+C2730,Check IIC, Check Y on Q2708
Emitter,Check CRY2201 oscillation
Check R-out on Q2209
Emitter
Check G-out on Q2208
Emitter
Check B-out on Q2207
Emitter
Check 9V VDO on +C2246 and +C2209.
Check 5V Reg. on +C2206.
Check IIC.
Check VPROT Signal on pin 35 of ICM2200.
Check ABL Voltage on pin 56 of ICM2200.
On The Video Output Board
:Check 12V VDO 0n
+C5100.
Check 215V VDO on
+C5103.
Check G2 Voltage.
Input DVD 480i
video signal.
Input YUV 1080i
video signal.
Check Y on +C2705
Check Q2700 and
peripherals
components.
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Input HDTV RF
signal
Check
WT1200,U1200,U12
01,U1203, and
peripherals
components.
Yes Yes
Yes
Yes