76
TROUBLESHOOTING
8) If Flex Sensor has trouble
Bad contact of connector/ insert correctly
Is MAIN PCB
Connector CN30 and CN76 insert
correctly?
Is Pantry Sensor
normal?
Is the voltage between
MAIN PCB Connector CN30#9(Whiteblack)
and REG1, HEAT SINK normal?
Is the input voltage of IC01
MICOM Pin# 73 normal?
Start
NO
YES
YES
YES
YES
Replace temperature sensor
NO
Recheck the wiring connection
NO(0.6V > Measurement < 4.6V)
Check the iced-solder, solder
bridging, disturbed solder
NO
No trouble with PCB and temperature sensor.
Recheck the bad contact of the connection.
** Measuring point of resistance value according to
Sensor **
Flex : CN30#9
↔
CN76 #1 measuring resistance value
** 0
Ω
: Short trouble /
∞Ω
: Open trouble
Sensor MICOM/Connector number
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #81,
CN30-"9"(Yellow) and REG1, HEAT SINK
from PCB typical Ground part are similar.
→
Check the measure on the Resistance, R314 due to the
SMD MICOM
☞
Checking method of Flex Sensor resistance
CN30-"9"(Yellow)
↔
CN76#1(Gray)
- Compare the temperature table after measurement.
DATA1.
Temperature table
ERROR Code
Refer to circuit diagram in the manual
Pantry Connector CN30-"9"(Yellow) to
REG1 HEAT SINK PCB typical Ground
☞
Checking method of Flex Sensor voltage
- Measuring resistance, R314(IC01 MICOM #81) on PCB or
CN30-"9"(Yellow)
↔
REG1, HEAT SINK
- Compare the temperature table after measurement.
Measuring voltage of CN30-"9"(Yellow)
↔
REG1, HEAT SINK
are as below
Typical PCB Ground
REG1 Heater Sink
Start
YES
YES
YES
AW3 SM-EN 2011.3.31 2:56 PM 페이지76 in
Summary of Contents for RF4287HABP
Page 86: ...87 TROUBLESHOOTING IPM FREEWHEELING DIODE VOLTAGE VALUE AW3SM EN2011 3 312 56PM페이지87 in ...
Page 96: ...97 TROUBLESHOOTING SPM Internal DIODE Voltage AW3SM EN2011 3 312 56PM페이지97 in ...
Page 98: ...99 TROUBLESHOOTING INVERTER PCB Circuit Diagram AW3SM EN2011 3 312 56PM페이지99 in ...
Page 124: ...125 7 1 Model RFG295AA BETTER 7 WIRING DIAGRAM BLU BLU AW3SM EN2011 3 312 57PM페이지125 in ...
Page 125: ...126 7 2 Model RF4287AA BEST 7 WIRING DIAGRAM AW3SM EN2011 3 312 57PM페이지126 in ...
Page 126: ...127 7 3 Model RFG299AA 7 LCD 7 WIRING DIAGRAM BLU BLU AW3SM EN2011 3 312 57PM페이지127 in ...
Page 127: ...128 7 4 Model RFG294AA SEARS 7 WIRING DIAGRAM AW3SM EN2011 3 312 57PM페이지128 in ...
Page 129: ...130 8 SCHEMATIC DIAGRAM 8 1 2 INVERTER BLOCK RF4287 AW3SM EN2011 3 312 58PM페이지130 in ...
Page 130: ...131 8 2 CIRCUIT DIAGRAM SCHEMATIC DIAGRAM 8 2 1 MAIN AW3SM EN2011 3 312 58PM페이지131 in ...
Page 131: ...132 SCHEMATIC DIAGRAM 8 2 2 INVERTER AW3SM EN2011 3 312 58PM페이지132 in ...