Samsung RT26 - Page 60

65
TROUBLESHOOTING
4-2-10. When the Water Pump does not work
WATER S/W works
properly?
(On/Off/Closed)
Is the output voltage of
the IC10 MICOM #44
normal?
Is the output of the
CN76 #10 & #3 Pins
normal?
Is the output of the MAIN
PCB connector (CN76)
normal?(DC10~12V)
Is the Water Pump
connected normally?
Is the Water Pump
normal?
Start
Check & Replace
WATER SWITCH
Replace / Repair PCB
Replace PCB
Check the Connector Terminal
and Replace MAIN PCB
Check the Connector Terminal
Replace Water Pump
Normal
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Water S/W& MICOM State
WATER
Switch
MICOM(#26)
On/Off
Close 0V(Low)
Open 5V(High)
MICOM State
Water
Pump
Motor Control Signal.
#44
On 5V(High)
Off 0V(Low)
IC75
Micom
CN76 10,3Pin
0V(Low) 0V(Low)
5V(High) 10~12V(High)
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