Samsung SCM-6700 - Troubleshooting; 6-1 Main Unit Troubleshooting; 6-1-1 Power Malfunction

6. Troubleshooting
6-1 Main
6-1-1 Power Malfunction
Samsung Electronics 6-1
Yes
No
Yes
No
Yes
No
No
Yes
LCD lamp is ON
Power Transistor &
fuse normal
Pins 73,31 of
UIC1(LC72362)
is at 5V
Connection
and soldering
of SCON1-FCW2
are normal
Check Voltage at RIC1
Voltages at RQ1,RQ2 and
RFR1 are normal
Replae RQ701
Voltages at
RQ702,RQ703
are normal
Voltage at
RQ701 is normal