LG RT-29FB55R, Руководство по обслуживанию

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TROUBLE SHOOTING
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RF- STEREO
Selected correct system
In menu
Check the waveform
IF 1 of TU101
Check the waveform
At pin 4, 5 of IC11
Check the waveform
At pin 2, 4 of IC601
Check the Voltage
At pin 6 of IC601
Check the waveform
At pin 8, 9, 11, 12 of IC601
Check the Voltage
At pin 5, 6 of IC602
NO
Check / Replace
TU 101
NO
NO
NO
Check The Voltage
At pin 2, 19, 20, 21, 24 of IIC11
Check / Replace Q601
Check / Replace
F806, D828(D805)
Check / Replace
C821, IC822, Q807
Check The voltage
At pin of IC821, IC822, Q807
NO
OK
OK
OK
OK
OK
OK
NO
No Raster / Sound OK
Check the
Heater voltage of CPT
(6 ~ 6.5Vrms)
Check
HV, Screen Voltage of
CPT
Check
R, G, B out of
CPT Board
Check the
Heater pulse of FBT
T402
Check 200V line of
CPT Board
& if no problem
check and Replace Check
FR901, P402A
P402B, FR 401 Check
FBT T402
Check
FBT T402
Check
IC901, P903A
OK
OK
OK
NO
NO
NO NO
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