6-5) When Power Is Not Applied - Samsung RF18A Series Service Manual

CHECK THE INSTALLATION STATUS

6-5) When Power is not applied

Caution
At the power of SMPS PCB, the AC115(230)V power and a high-voltage over DC 170(325)V are occurred.
Please take care of yourself on repair and measurement.
Check the MAIN PBA
-. 12V : CN04 #2 ↔ #5
-. 5V : CN04 #2 ↔ #6
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Start
Is the power plug connected?
No
Does the SMPS
deliver normal output voltages of
12V and 5V?
Yes
Does the Panel PCB
function properly?
No
Is there
any soldering short or
poor soldering job detected
on PCB?
Yes
Normal
Yes
Make sure the plug is connected
No
- Checking connection of main PCB.
Yes
- Checking connection between upper hinge and door.
- Checking connection of door panel PCB.
No
1. Resolder the PCB.
2. Replace the PCB MAIN.
93
and not loose.
Replace the PCB ASSY.