LG Flatron F900P

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6. TROUBLE IN DPM
CHECK
IC401 (MICOM)
PIN 40, 41 (H/V INPUT)
SIGNAL?
CHECK
IC401 PIN 9, 8
WAVEFORM?
CHECK
IC401 PIN 6
(5V, HIGH)?
CHECK
IC401 PIN 18, 19 ?
CHECK PC,
(PC IS NOT GOING INTO
DPM MODE)
TROUBLE IN
X401, IC401
TROUBLE IN
IC401
TROUBLE IN
IC401
TROUBLE IN
T901 or PC
NO H / V SYNC SIGNAL
INPUT H/V SYNC
NO
NO
NO
DPMS TABLE
Mode
Item
NORMAL
STAND-BY
SUSPEND
OFF
H / V SYNC
ON / ON
OFF / ON
ON / OFF
OFF / OFF
LED
GREEN
AMBER
AMBER
AMBER
VIDEO
NORMAL
OFF(0V)
OFF(0V)
OFF(0V)
YES
YES
CHECK
B
+
LINE
(12V, 15V, 80V,
5V) ?
TROUBLE IN
Q951, IC904
NO
YES
STAND-BY/SUSPEND/
DPMS OFF MODE FAILURE