Toshiba RAV-SM1100UT-E Service Manual page 41

[P22 error]/[1A error]
Are connections of CN301, CN303 and
CN300, CN302 of P.C. board correct?
Does the fan rotate without trouble
when handling the fan with hands under
condition of removing CN301, CN303 and
CN300, CN302 from P.C. board?
The status that the resistance values
between leads below are 50 to 80W
for 43W motor (ICF-140-43) and 25 to 55W
for 63W motor (ICF-140-63) is normal.
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
5k to 20kW resistance values between
(Yellow lead) and
1
of motor position detection of
connector (CN300, CN302) is normal.
Normal fan motor
(Control or CDB P.C. board)
(Control P.C. board or 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 winding
Motor position detection
NO
CN301, CN303
NO
* CN301, CN303 : Motor coil winding
NO
Defective fan motor
Single phase
RAV-SM1100AT-E, RAV-SM1400AT-E
CDB P.C. board
CN301
CN300
CN303
CN302
– 41 –
CN300, CN302
CN300, CN302 : Motor position detection