Samsung RB215BSSB Service Manual - Page 61

When R-Room FANR-FANdoes not operate

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Diagnostics 2) When R-Room FAN(R-FAN)does not operate 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)? Freezer Door Switch input #43 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 61 NO YES Start Forced Operation Normal R-FAN NO Check temp conditions, Select Super Cool NO Change DOOR S/W NO Check soldering /Change PCB NO Re-insert ConnectorCN71 NO Check soldering /Change PCB NO Check IC70 /Change PCB NO Check RELAY /Change PCB - Reference • Load terminal Measure method.

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