-34-
TROUBLE SHOOTING GUIDE
(7) NO PICTURE
H-DRV relation
circuit CHECK
T402 Operating
CHECK
N
Y
(7-1)
(7-1)
(1)
T402 Voltage
CHECK
Y
Y
Y
N
Q401 waveform
CHECK
I501 #27
waveform check
Y
N
N
I501
CHECK/CHANGE
I502
Relation circuit CHECK
Q402
CHECK/CHANGE
I501 #25 Voltage
CHECK
N
D890 relation circuit
CHECK
P902 #1
Voltage check
Y
I501 #32 Voltage
CHECK
SCT1,CRT
CHECK/CHANGE
P902 #4
waveform check
Y
N
N
DY
CHECK/CHANGE
DY CONNECTION
CHECK
Y
N
Summary of Contents for DDQ-20L6SC
Page 11: ...5 SCHEMATIC DIAGRAM 10 5 1 MAIN CIRCUIT DIAGRAM ...
Page 12: ...SCHEMATIC DIAGRAM 11 5 2 POWER CIRCUIT DIAGRAM ...
Page 22: ...7 PRINTED CIRCUIT BOARD 21 7 1 PCB MAIN ...
Page 23: ...PRINTED CIRCUIT BOARD 22 7 2 PCB POWER ...
Page 24: ... 23 9 IC DESCRIPTION U COM I701 9 1 U COM I701 PIN ASSIGN ...
Page 27: ... 26 10 CHIP COMPONENTS POSITION PCB MAIN ...
Page 41: ......