TROUBLE SHOOTING
1. RF-STEREO MODEL
1) PICTURE OK / NO SOUND
Selected correct system in menu
OK
Check the waveform IF 1 of TU101
OK
Check the waveform at pin 4, 5 of IC501
OK
NO
NO
Check/ Replace TU101 or Input signal
Check the voltage at pin 3, 9, 16, 43, 86, 88, 90 of UOCIII
NO
Check/ Replace IC501
Check the waveform at pin 4, 12 of IC601
OK
Check the waveform at pin 6 of IC601
OK
NO
NO
Check the voltage at pin 57, 58 of
UOCIII
Check/ Replace Q603
Check the waveform at pin 1, 2, 14, 15 of IC601
OK
Check the waveform at pin 3, 13 of IC601
NO
NO
Check/ Replace IC601
Check/ Replace R823, D826
2) No Raster / Sound OK(1/2)
Check the Heater voltage of
CPT(6~6.4 Vrms)
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 197V line of CPT Board & if no problem check and Replace
Check IC901,
P402A
Check RF901, P402, P402B, FR401
Check FBT T402
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