93
TROUBLESHOOTING
Start
Caution
There is AC220~240V or DC310~340V
at the MAIN PCB Power Circuit. So, be
cautious when repairing the unit or
measuring values.
Normal (Check again)
Yes
The unit is plugged in?
Yes
220~240V is applied
at MAIN PCB
CN71 terminals?
No
MAIN PCB Fuse is blown?
Yes
DC310~340V is applied
at BD101 terminals?
Yes
DC 6.2V is applied at
TOP S/W 3-12
Yes
12V is applied at
CE102 terminals?
Yes
5V is applied at
CE105 terminals?
Yes
Panel PCB operates
normally?
Loads such as Relay
operate normally?
Is there PCB Short
or breakage?
Yes
No
Plug in the unit
No
Check the wire connections
No
1) Replace Fuse (AC 250V 2.0A)
2) Replace PCB ASS'Y
Yes
Replace PCB ASS'Y
No
Replace PCB ASS'Y
No
Replace PCB ASS'Y
No
Replace PCB ASS'Y
No
1) Check the wire connections
2) Replace Panel PCB
- Check the connection of Door Panel PCB
No
1) Check Lead Wire connections
2) Replace Relay or PCB ASS'Y
1) Do Re-soldering
2) Replace PCB MAIN
No
Yes
4-17) When there is no Power in Main PCB
- 2 BOARD
- When checking the MAIN PCB, refer
to the Operation descriptions and the
"Reference" section.
Содержание RR39M7 Series
Страница 103: ...103 6 WIRING DIAGRAM This document can not be used without Samsung s authorization 6 1 Wiring Diagram 2 BOARD...
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