Samsung RB215B Series Service Manual page 61

Diagnostics
2) When R-Room FAN(R-FAN)does not operate
Freezer Door Switch input #43
Start
Is it during
Forced Operation?
YES
Does Fan
operate with DOOR
S/W presses?(Including
Delay Time)
NO
Is the
R-Room temperature a
Fan-On condition?
YES
Is DOOR S/W normal?
YES
Is the
voltage of MICOM #43 5V
(Close condition)?
YES
Is insertion of
CN71(W/BLUE)of MAIN
PCB normal?
YES
Is voltage
of MICOM Pin #30
"HIGH"(5V)?
YES
Is voltage
of IC70 #17
"LOW"(0.7V)?
YES
Is R-FAN RELAY
(SSR72) normal?
Check wire assembled status/
Change MAIN PCB AASS'Y
NO
YES
NO
NO
NO
NO
NO
NO
NO
61
Start Forced Operation
Normal R-FAN
Check temp conditions,
Select Super Cool
Change DOOR S/W
Check soldering /Change PCB
Re-insert ConnectorCN71
Check soldering /Change PCB
Check IC70 /Change PCB
Check RELAY /Change PCB
• Refer to the list (15-1)