36
OK
OK
OK
OK
NG
NG
NG
NG
OPEN THE SLIT OF TUNER IF OUTPUT AND
CONNECT TESTER LEADS TO PIF INPUT STAGE
(C101) AND EARTH MOMENTARILY
NOISE IS APPEARED OR NOT?
MEASURE THE VOLTAGE OF
EACH PIN OF I501
CHECK/REPLACE Z101
(SAW FILTER)
CHECK/REPLACE
I501
CHECK/REPLACE I501
AND PIF AGC
CIRCUIT
MEASURE THE
B+ VOLTAGE OF
TUNER
CHECK/REPLACE
+9V LINE
CHECK/REPLACE
TUNER
MEASURE THE VOLTAGE OF
AGC TERMINAL OF TUNER
(NORMAL: +3.0V~+7.6V)
OK
OK
LOW OR ZERO
OK
CHECK +9V/+7.6V LINE ON MAIN PCB
CHECK/REPLACE R202, I201
CHECK/REPLACE D201, R201
CHECK/REPLACE
I501
CHECK/REPLACE U101
§
NO RASTER (NOISE OR WEAK SOUND)
§
NO PICTURE (RASTER REMAINS AND NO SOUND)
Содержание DTH-14Q1FS
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