Toshiba RAV-SM560XT-E Service Manual page 53

10-3. Troubleshooting for Each Check Code
[1A error]
Are connections of CN301 and
CN300 of CDB correct?
Does the fan rotate without trouble
when handling the fan with hands under condition
of removing CN301 and CN300 from CDB?
The status that the resistance values
between leads below are 50 to 80 Ω
for 40 W motor (ICF-140-43) and 25 to 55 Ω
for 60 W motor (ICF-140-63-1) is normal.
Between 1 (Red lead) and 2 (White lead)
Between 2 (White lead) and 3 (Black lead)
Between 3 (Black lead) and 1 (Red lead)
of motor winding of connector (CN301)
The status that there is
5k to 20kΩ resistance values between
1 (Yellow lead) and 4 (Pink lead)
of motor position detection of connector
(CN300, CN302) is normal.
Normal fan motor
(CDB error)
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.
Objective P.C. board
Fan motor winding
Motor position detection
YES
YES
YES
YES
Control P.C. board
NO
NO
NO
Defective fan motor
RAV-SM560AT-E
CN300
CN301
– 51 –
CN301
• For RAV-SM560AT-E, CN300 changes to
CN301, and CN301 to CN300, respectively.
RAV-SM800AT-E
CDB P.C. board
CN301
CN300
CN300