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1. CHECK PIN11, 12
SOLDERING CONDITION
2. CHECK X501
3. TROUBLE IN U501
U201
POWER PIN 72,
82, 94(3.3V)
PIN 64, 85 (2.5V)?
NO
CHECK U803
(2.5V REGULATOR),
CHECK U804
(3.3V REGULATOR)
U501
PIN11, 12
OSCILLATE AS
12MHZ?
CHECK CONNECTION LINE
FROM D-SUB TO U501
TROUBLE IN CABLE
OR LCD MODULE
YES
YES
YES
3. NO RASTER (OSD IS NOT DISPLAYED) – MST9131B
NO RASTER
(OSD IS NOT DISPLAYED)
U501
PIN41 IS 48KHz H-SYNC?
PIN42 IS 60Hz V-SYNC?
IS PULSE APPEARED
AT SIGNAL PINS?
AT MODE 12?
NO
NO
Summary of Contents for SDM-HS74
Page 7: ... 7 WIRING DIAGRAM Connector Ass y P N 6631T11016W Connector Ass y P N 6631T20023L ...
Page 17: ... 17 12 GENESS S O N Y 1 2 3 13 9 11 16 7 10 15 8 6 5 14 4 1 4 2 EXPLODED VIEW ...
Page 22: ...SCHEMATIC DIAGRAM 22 1 MST9131B ...
Page 23: ... 23 2 MICOM ...
Page 24: ... 24 3 POWER ...
Page 25: ... 25 4 CONNECTOR JACKS ...