TROUBLE SHOOTING
RF- STEREO MODEL
PICTURE O. K / NO SOUND
Selected correct system
In m enu
| OK | NO |
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Check the waveform | ||
IF 1 of TU101 |
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| OK | NO |
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Check the waveform | ||
At pin 4, 5 of IC11 |
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| OK |
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Check the waveform |
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At pin 2, 4 of IC601 |
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| OK | NO |
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Check the waveform | ||
At pin 6 of IC601 |
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| OK |
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Check the waveform
At pin 8, 9, 11, 12 of IC601
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| OK | NO | |
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Check the waveform | |||
At pin 5, 6 of IC601 |
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Check / Replace
TU 101
Check The Voltage
At pin 2, 19, 20, 21, 24 of IIC11
Check / Replace Q601
Check / Replace
F806, D828(D805)
NO
Check The voltage
At pin of IC821, IC822, Q807
NO
Check / Replace C821, IC822, Q807
No Raster / Sound OK (1/ 2)
Check the
Heater voltage of CPT (6~ 6. 4Vrm s)
Check
HV, Screen Voltage of
CPT
Check
R, G, B out of CPT Board
Check the
Heater pulse of FBT T402
Check FBT T402
Check 185V line of CPT Board & if no problem check and Replace
Check
IC901, P903A
Check RF901, P402 P402B, FR401
Check FBT T402
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