The Lsu Fan Motor Does Not Operate - Kyocera KM-6030 Service Manual

2FB/2FC-4
Problem
(27)
Cooling fan motor 3
does not operate.
(28)
Cooling fan motor 4
does not operate.
(29)
The scanner fan
motor does not oper-
ate.
(30)
The lamp fan motor
does not operate.
(31)
The LSU fan motor
does not operate.
1-5-62
Causes
1. Broken cooling fan motor
3 coil.
2. Poor contact in cooling
fan motor 3 connector
terminals.
3. Defective cooling fan
motor 3.
4. Defective engine PWB.
1. Broken cooling fan motor
4 coil.
2. Poor contact in cooling
fan motor 4 connector
terminals.
3. Defective cooling fan
motor 4.
4. Defective engine PWB.
1. Broken scanner fan
motor coil.
2. Poor contact in scanner
fan motor connector ter-
minals.
1. Broken lamp fan motor
coil.
2. Poor contact in lamp fan
motor connector termi-
nals.
3. Defective lamp fan motor. Run maintenance item U037 and check if the lamp fan motor
4. Defective scanner PWB.
1. Broken LSU fan motor
coil.
2. Poor contact in LSU fan
motor connector termi-
nals.
3. Defective LSU fan motor. Run maintenance item U037 and check if the LSU fan motor oper-
4. Defective engine PWB.
Check procedures/corrective measures
Check for continuity across the coil. If none, replace cooling fan
motor 3.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U037 and check if cooling fan motor 3
operates when YC5-31 on the engine PWB outputs 24 V. If not,
replace cooling fan motor 3.
Run maintenance item U037 and check if YC5-31 on the engine
PWB outputs 24 V. If not, replace the engine PWB.
Check for continuity across the coil. If none, replace cooling fan
motor 4.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U037 and check if cooling fan motor 4
operates when YC13-5 on the engine PWB outputs 24 V. If not,
replace cooling fan motor 4.
Run maintenance item U037 and check if YC13-5 on the engine
PWB outputs 24 V. If not, replace the engine PWB.
Check for continuity across the coil. If none, replace the scanner
fan motor.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check for continuity across the coil. If none, replace the lamp fan
motor.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
operates when YC2-1 on the scanner PWB goes low. If not,
replace the lamp fan motor.
Run maintenance item U037 and check if YC2-1 on the scanner
PWB goes low. If not, replace the scanner PWB.
Check for continuity across the coil. If none, replace the LSU fan
motor.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
ates when YC5-32 on the engine PWB outputs 24 V. If not,
replace the LSU fan motor.
Run maintenance item U037 and check if YC5-32 on the engine
PWB outputs 24 V. If not, replace the engine PWB.