LG Flatron 774FT Service Manual page 20

DPM MODE FAILURE
CHECK
IC401 (MICOM)
PIN 30,31 (H/V INPUT)
SIGNAL?
NO H/V SYNC
CHECK
IC401 PIN 13
WAVEFORM?
5V
YES
6MHz
CHECK
IC401 (MICOM)
PIN 2,3 ?
SEE DPM TABLE
YES
CHECK
B + LINE
(6.3V,15V) ?
YES
TROUBLE IN PC
8. TROUBLE IN DPM
(NO DPM MODE.)
INPUT H/V SYNC SIGNAL
NO
NO
NO
Item
Mode
NORMAL
STAND-BY
SUSPEND
OFF
- 20 -
CHECK PC,
(PC IS NOT GOING INTO
DPM OFF MODE)
TROUBLE IN
X401
(DPMF: 0V) TROUBLE IN
IC401 (MICOM)
TROUBLE IN
Q41,Q942,Q951,Q952
DPM TABLE
DPMF
DPMS
H
H
H
L
H
L
L
L
LED
GREEN
ORANGE
ORANGE
ORANGE