NEC DSC-3261HA - Page 16

15
Trouble Shooting Charts
3. NO PICTURE
Check
19th pin of I701
ABNORMAL
NORMAL
ABNORMAL
ABNORMAL
NORMAL
Check signal at R, G, B
of I701
Change input mode
RF--->AV--->RF
Check signal at IF of
Tuner
Check
IF module, SF01,
12V line, 5V line
Check signal at
17th pin I101
Check/Replace
CVBS of PA01,
Peripheral components
Check/Replace
Q550, Q542, Q543,
Q544
Check signal at
R, G, B input and
R, G, B output of I901 &
12V line & 220V line
Check/Replace
SCL, SDA, B+
of Tuner
Check
Heater Voltage
Check/Replace
I101