3-13
Is there about
6.3V
AC
at HEATER of CPT
SOCKET?
YES
Does the waveform
appear at the collector
of Q781?
YES
Does the square
waveform appear at pin 1 of
P805?
YES
Is there about 8V
at pin 6 of P805?
YES
NO RASTER
Go to NO POWER BLOCK
Go to NO PICTURE BLOCK
Is there about 115V
at pin 3 of T701?
YES
NO
¡
Check/Replace F852, D850,
R858, IC853, C863.
¡
Check the 8V LINE of VCD
BOARD
NO
¡
Check the H-OUT LINE of VCD
BOARD.
¡
Check/Replace IC501 of VCD
BOARD.
NO
Check/Replace Q782, T781, R783,
Q781.
NO
Check/Replace T701, 5PIN
CONNECTOR, FR901,FR902.
NO
Summary of Contents for KE-20P32X
Page 21: ...3 9 BLOCK DIAGRAM ...
Page 28: ...3 16 PRINTED CIRCUIT BOARD MAIN ...
Page 30: ...3 18 POWER ...
Page 31: ...3 19 CPT AV 14 AV 20 ...
Page 63: ......