NEC DSC-3261HA - Page 18

17
Trouble Shooting Charts
5. NO SOUND(PICTURE OK)
Check
direction & connection
of
H/P Connector(P503) &
AV3 Connector(P504)
NORMAL
NORMAL
ABNORMAL
ABNORMAL
NORMAL
Check
6th pin of I701
(normal:Low)
Check signal at
28, 29, 58th pin of I601
Check
20V line of I602:OK
Lin, Rin: OK
Lout, Rout: OK
Check/Replace
Speaker
Check
12th pin of I101
ABNORMAL
Replace
I602
Check/Replace
X601 &
SCL, SDA line of I601
Check
20V line of I602:OK
Lin, Rin: OK
Lout, Rout: NG
Check/Replace
SF03, I101