Troubleshooting For Each Check Code - Toshiba RAV-SM560AT-E Service Manual

14-4. 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
for 40W motor (ICF-140-43) and 25 to 55
for 60W motor (ICF-140-63-1) is normal.
Between 1 (Red lead) and
Between (White lead) and
2
Between (Black lead) and
3
of motor winding of connector (CN301)
The status that there is
5k to 20k resistance values between
(Yellow lead) and
1
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
2 (White lead)
(Black lead)
3
(Red lead)
1
YES
(Pink lead)
4
YES
RAV-SM560AT-E
Control P.C. board
CN301
NO
NO
• For RAV-SM560AT-E, CN300 changes to
CN301, and CN301 to CN300, respectively.
NO
Defective fan motor
RAV-SM800AT-E
CDB P.C. board
CN300 CN301
CN301 CN300
– 121 –
CN300