
TROUBLE SHOOTING
- 14 -
1. RF-STEREO MODEL
1) PICTURE OK / NO SOUND
Check/ Replace TU101 or Input signal
NO
OK
Selected correct system in menu
Check the waveform IF 1 of TU101
Check the voltage at pin 3, 9, 16, 43,
86, 88, 90 of UOCIII
NO
Check/ Replace IC11
NO
Check the voltage at pin 57, 58 of
UOCIII
NO
OK
Check the waveform at pin 4, 5 of IC11
OK
Check the waveform at pin 4, 12 of
IC601
Check/ Replace Q603
NO
OK
Check the waveform at pin 6 of IC601
Check/ Replace IC601
NO
OK
Check the waveform at pin 1, 2, 14, 15
of IC601
Check/ Replace R823, D826
Check the Heater voltage of
CPT(6~6.4 Vrms)
Check R, G, B out of CPT board
Check IC901,
P402A
Check 190V line of CPT Board &
if no problem check and Replace
Check the Heater pulse of FBT T402
Check RF901, P903C,
P903B, FR401
Check FBT T402
Check HV, Screen voltage of CPT
Check FBT T402
NO
OK
Check the waveform at pin 3, 13 of
IC601
2) No Raster / Sound OK(1/2)
Summary of Contents for 21FU1RLX
Page 13: ... 13 SVC REMOCON ...
Page 17: ... 17 PRINTED CIRCUIT BOARD MAIN ...
Page 18: ... 18 LED PRE AMP CONTROL ...
Page 19: ... 19 BLOCK DIAGRAM ...
Page 20: ... 20 EXPLODED VIEW 400 112 170 150 520 174 120 300 590 530 310 331 330 320 943 913 105 104 ...
Page 29: ...P No EBY31683801 2006 08 22 ...
Page 30: ...SVC SHEET EBY31683801 S ...