Daewoo DP-42GM Service Manual page 64

(Table 3.) FET Diode Tester Measure Value
+ : red, -: black
Location
1 QU19-QU20
2 QU15-QU18
(table 4.) When HIC Diode test, do as the method equal to Y-SUSPCB
Check ( refer to 9-4)
Note after X_SUS PCB Repair
Make sure to check power module s high voltage (Vsus, Vadd). If remaining voltage detected,
use resistance to discharge them.
Make sure to check Connector(Power Connector, Signal Connector) s Connection
Check Panel s FPC and Connector PU1~6 s Connection
After replacing X_SUS PCB, readjust Vshelf as Optimum adjusting Voltage Table located above
VIDEO PCB.
Make sure to check screw connection between X-SUS PCB and Panel back-plate.
When using scope to check signals, GND terminal must be attached to HEAT SINK.
NAME DIODE TESTER
D +
S -
D +
S -
MEASURE DIODE TESTER MEASURE
After about 5 sec,
Over 2.2V
Open
-64-
-
Over 0.5V
+
-
Over 0.4V
+