Samsung MX-C730 Service Manual page 27

4-1-2 No Output
No Output
Check MAIN PCB
ALD10, 11 red led is light?
Yes
Check MAIN
PCB IC13 (4560) input and
output signal?
Yes
1
Check MAIN PCB
WIC1 (9830) and input and
output signal?
Yes
Check MICOM IC
(UIC1) and MICI MPEG
(ESS) signal?
Yes
Replace UIC1 and MIC1.
Samsung Electronics
No
PCN1 Pin 1 ~ 4: +37V or 29V
No
No
 Refer to wave pattern
image of Fig. 4-2.
No
Check MAIN PCB
and Pin 11 ~ 14: -37V
or -29V?
No
Check or replace SMPS.
Troubleshooting
Yes
Check the AIC 2 working.
Check IC13 (4560) signal
input and signal pattern.
Check WIC1(9830) signal
input and signal pattern.
Check signal input and
signal pattern or replace
SMPS.
4-3