Toshiba RAV-SM1603AT-E Service Manual page 102

[P22 error]
Are connections of CN300, CN301, CN302 and
CN303 of P.C. board correct?
Does the fan rotate without trouble
when handling the fan with hands under condition
of removing CN300, CN301, CN302
and CN303 from P.C. board?
The status that the resistance values
between leads below are 12 to 22Ω.
Between (Red lead) and
1
Between (White lead) and
2
Between (Black lead) and
3
motor winding of connector (CN301, CN303)
The status that there is
10k to 12kΩ resistance values between
(Yellow lead) and
1
of motor position detection of connector
(CN300, CN302) is normal.
Normal fan motor
(Defective CDB P.C. board)
NOTE :
However, GND circuit error inside of the motor is rarely detected even if the above check is carried out.
When the circuit does not become normal even if P .C. board has been replaced, replace outdoor fan motor.
YES
YES
(White lead)
2
(Black lead)
3
(Red lead) of
1
YES
(Pink lead)
4
YES
Objective P .C. board
Fan motor winding
Motor position detection
Fan motor model
Motor winding resistance
Correct connection of connector.
NO
CN301,
NO
CN300 : Motor coil winding
NO
CN301 : Motor position detection
∗
CN301, CN303 : Motor coil winding
CN300, CN302 : Motor position detection
Defective fan motor
RAV-SM160AT-E
CDB P .C. board (MCC-1531)
CN301/CN303
CN300/CN302
ICF-280-100
12 to 22 Ω
– 102 –
∗
CN303
CN300