37
OK
OK
OK
OK
OK
OK
NG
NG
NG
HEATER ELEMENTS OF CRT
ARE LIGHTING OR NOT?
CHECK H.V AT
ANODE OF CRT
CHECK CONNECTOR
ASS' Y P401 AND PA501
CHECK/REPLACE I501
CHECK/REPLACE
T402
CHECK THE SUPPLY
VOLTAGE OF HEATER
CHECK/REPLACE
THE WIRING
PA501 AND P401
CHECK/REPLACE
R817 AND T402
CHECK/REPLACE HORIZ.
DRIVE TRANS(T401)
CHECK/REPLACE Q401/Q402
OK
OK
OK
OK
OK
OK
OK
NG
NG
NG
CHECK WHETHER THE BRIGHT & CONTRAST ARE
CONTROLLABLE OR NOT?
CHECK/REPLACE THE COMPOSITE
SIGNAL INPUT STAGE
AND VIDEO PARTS OF I501
CHECK THE VCC VOLTAGE AT
#40 OF I501
CHECK R, G, B SIGNAL
OUTPUT AND PA501
CHECK/R7.6V
LINE OF I501
CHECK THE VOLTAGE OF
+185V ON CRT BOARD
CHECK/R185V
CHECK/REPLACE THE
EACH PIN OF I501
CHECK THE SIGNAL INPUT
CIRCUIT OF I501
REPLACE THE SIGNAL
INPUT CIRCUIT
REPLACE T402
§
NO PICTURE (RASTER AND SOUND OK)
§
NO RASTER (SOUND OK)
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