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2KN/2KP
1-4-64
(27)
Cooling fan motor 3
does not operate.
1. Broken cooling fan motor
3 coil.
Check for continuity across the coil. If none, replace cooling fan
motor 3.
2. Poor contact in cooling
fan motor 3 connector
terminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
3. Defective cooling fan
motor 3.
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.
4. Defective engine PWB.
Run maintenance item U037 and check if YC5-31 on the engine
PWB outputs 24 V. If not, replace the engine PWB.
(28)
Cooling fan motor 4
does not operate.
1. Broken cooling fan motor
4 coil.
Check for continuity across the coil. If none, replace cooling fan
motor 4.
2. Poor contact in cooling
fan motor 4 connector
terminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
3. Defective cooling fan
motor 4.
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.
4. Defective engine PWB.
Run maintenance item U037 and check if YC13-5 on the engine
PWB outputs 24 V. If not, replace the engine PWB.
(29)
The scanner fan
motor does not oper-
ate.
1. Broken scanner fan
motor coil.
Check for continuity across the coil. If none, replace the scanner
fan motor.
2. Poor contact in scanner
fan motor connector ter-
minals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
(30)
The lamp fan motor
does not operate.
1. Broken lamp fan motor
coil.
Check for continuity across the coil. If none, replace the lamp fan
motor.
2. Poor contact in lamp fan
motor connector termi-
nals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
3. Defective lamp fan motor. Run maintenance item U037 and check if the lamp fan motor
operates when YC2-1 on the scanner PWB goes low. If not,
replace the lamp fan motor.
4. Defective scanner PWB.
Run maintenance item U037 and check if YC2-1 on the scanner
PWB goes low. If not, replace the scanner PWB.
(31)
The LSU fan motor
does not operate.
1. Broken LSU fan motor
coil.
Check for continuity across the coil. If none, replace the LSU fan
motor.
2. Poor contact in LSU fan
motor connector termi-
nals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
3. Defective LSU fan motor. Run maintenance item U037 and check if the LSU fan motor oper-
ates when YC5-32 on the engine PWB outputs 24 V. If not,
replace the LSU fan motor.
4. Defective engine PWB.
Run maintenance item U037 and check if YC5-32 on the engine
PWB outputs 24 V. If not, replace the engine PWB.
Problem
Causes
Check procedures/corrective measures
Summary of Contents for TASKalfa 620
Page 1: ...SERVICE MANUAL Published in August 2009 842KP112 2KPSM062 Rev 2 TASKalfa 620 820 ...
Page 4: ...This page is intentionally left blank ...
Page 10: ...This page is intentionally left blank ...
Page 144: ...2KN 2KP 1 3 106 This page is intentionally left blank ...
Page 308: ...2KN 2KP 1 5 88 This page is intentionally left blank ...
Page 412: ...2KN 2KP 2 3 60 This page is intentionally left blank ...
Page 435: ...1 1 INSTALLATION GUIDE INSTALLATION GUIDE FOR SIDE FEEDER ...
Page 442: ...INSTALLATION GUIDE FOR LARGE SIZE SIDE FEEDER ...
Page 460: ...INSTALLATION GUIDE FOR DOCUMENT FINISHER ...
Page 475: ...INSTALLATION GUIDE FOR CENTERFOLD UNIT ...
Page 490: ...INSTALLATION GUIDE FOR MULTI JOB TRAY ...
Page 501: ...INSTALLATION GUIDE FOR PUNCH UNIT ...
Page 512: ...INSTALLATION GUIDE FOR STOPPER GUIDE ...
Page 515: ...INSTALLATION GUIDE FOR PRINTING SYSTEM ...
Page 518: ...INSTALLATION GUIDE FOR SCAN SYSTEM ...
Page 520: ......
Page 521: ......