Samsung RL60GG Series, Service Manual

Page: 58 / 94

58
4. TROUBLESHOOTING
Is 230V applied
at both of the Inverter PCB
CN102?
Is the INVERTER PCB
Fuse blown?
Is DC320V applied to
BD1+/- terminals?
Is DC 5.8V
applied between TOP S/W
Top245P C-S (C104)?
Is 12V applied to
both of C106 terminals?
Is 5V applied to
both of C108 terminals?
Does PANEL PCB
operate normally?
Do Relays operate normally?
Is there any short
or breakage on PCB
Soldering?
Start
Normal
Check the wire connectors
Replace Fuse (250V 5A)
Check PCB Pattern and Replace BD1
Replace PCB ASS'Y
1) Replace D103 (RK49)
2) Replace PCB ASS'Y
Replace REG1 (7805)
1) Check the Wire Connection
and correct it if necessary
2) Replace PANEL PCB
- Check MAIN PCB Connectors
- Check Wire Connection between
CABI and DOOR
- Check DOOR PANEL PCB
Connection
1) Repair Related Parts or
Replace PCB
No
No
No
No
No
No
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Caution
There is AC230V or DC300V at the
MAIN PCB Power Circuit.
So, be cautious when repairing the
unit or measuring values.
- To check the MAIN PCB, refer to
the Operation and 'Refer' sections
in this manual
4-2-5) When there is no Power in Inverter PCB (Inverter Comp )
G/H/L/P/R/Z Option