Daewoo DP-42GM Service Manual page 70

DIODE TESTER
- +
1~4
5
6
7
8
9~`10
11
12
13
14
15
16
17
GND 18
19
20
21~22
23
24~25
26~27
28
29~30
31
32~35
36
37~38
39~40
Note after Y_SUSTAIN B/D REPAIR
Make sure to check power module's high voltage (Vsus, Vyer). If remaining voltage detected,
use resistance to discharge them.
Make sure to check Connectors(Power Connector, Signal Connector, Connector between SCAN
PCB and Y-SUS PCB)'s Connection.
After replacing Y_SUS PCB, readjust Vramp_up, Vscan Voltage and Slope of Ramp_up,
Ramp_down as Optimum adjusting Voltage Table located above VIDEO PCB. (Refer to 6-2-3)
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
MEASURE
After about 15sec, OPEN
NC
0.5V DLTKD
Over 1.2V
NC
GND
NC
Over 1.2V
0
Over 1.2V
NC
Over 1.2V
0
NC
Over 1.2V
0
After about 10sec, OPEN
NC
OPEN
OPEN
NC
After about 10sec, OPEN
NC
GND
NC
OPEN
OPEN
DIODE TESTER
+ -
1~4
5
6
7
8
9~`10
11
12
13
14
15
16
17
GND 18
19
20
21~22
23
24~25
26~27
28
29~30
31
32~35
36
37~38
39~40
-70-
MEASURE
Over 0.7V
NC
Over 0.4V
Over 0.4V
NC
GND
NC
Over 0.5V
0
Over 0.5V
NC
Over 0.5V
0
NC
Over 0.5V
0
Over 0.3V
NC
Over 0.8V
Over 0.8V
NC
Over 0.3V
NC
GND
NC
Over 0.3V
Over 0.3V