![background image](http://html1.mh-extra.com/html/midea/ce-bcd505we-st/ce-bcd505we-st_service-manual_1791504039.webp)
Service Manual
, 2016-12
38
/
51
10.Circuit description
10.1
Power Supply
AC input power would be reduced by SMPS control chip, then output stable DC12V and DC15V power after
treated by LC and filter. DC12V power is provided to relay (control strong electricity), internal lamp and control
panel, DC15V powers are provided to fan motor (voltage variation control the RPM of motor, lowest voltage is
8V). DC12V power is changed into DC5V power by regulator, to provide main control chip with power, monitoring
the temperature status of refrigerator
10.2
Test circuit for door switch
As show as above picture, take the door switch of refrigerator as example, the door switch is connected between
1 and 2 serially, when door is closed, the switch is in off-state, high-level be be detected at MCU port; when the
door is open, the switch is in on-state, low-level can be detected at MCU port. by high-level or low level detected,
Summary of Contents for CE-BCD505WE-ST
Page 1: ...1 54 SBS SERIES Service Manual 2016...
Page 6: ...Service Manual 2016 12 5 51 1 Safety Warning Code 1 1Warning for operation safety...
Page 7: ...Service Manual 2016 12 6 51...
Page 8: ...Service Manual 2016 12 7 51...
Page 9: ...Service Manual 2016 12 8 51 1 2Safety instruction for refrigerant...
Page 42: ...Service Manual 2016 12 41 51 11 Troubleshooting Method 11 1No cooling Air cooling Electronic...
Page 43: ...Service Manual 2016 12 42 51 11 2No working of compressor 11 3Inside frosting no defrosting...
Page 44: ...Service Manual 2016 12 43 51 11 4 Inside frosting no defrosting Maintenance guidelines...
Page 45: ...Service Manual 2016 12 44 51 11 5Light is not on 11 6Air duct not operated electronically...
Page 46: ...Service Manual 2016 12 45 51 11 7Fan failure 11 8Defective defrost circuit...
Page 49: ......