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2LK/2LN/2LM/2LC
1-4-101
1-4-4 Electric problems
If the part causing the problem was not supplied, use the unit including the part for replacement.
Troubleshooting to each failure must be in the order of the numbered symptoms.
Problem
Causes
Check procedures/corrective measures
(1)
The machine does
not operate when
the main power
switch is turned on.
1. No electricity at the
power outlet.
Measure the input voltage.
2. The power cord is
not plugged in prop-
erly.
Check the contact between the power plug and the outlet.
3. Broken power cord.
Check for continuity. If none, replace the cord.
4. Defective main
power switch.
Check for continuity across the contacts. If none, replace
the power source PWB (see page 1-5-56).
5. Defective power
source PWB.
Replace the power source PWB (see page 1-5-56).
(2)
MP lift motor does
not operate.
1. Defective connector
cable or poor con-
tact in the connector.
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
MP lift motor and relay PWB (YC3)
Relay PWB (YC12) and engine PWB (YC17)
2. Defective drive trans-
mission system.
Check if the rollers and gears rotate smoothly. If not,
grease the bushes and gears. Check for broken gears and
replace if any.
3. Defective motor.
Replace the MP lift motor.
4. Defective PWB.
Replace the engine PWB and check for correct operation
(see page 1-5-54).
(3)
Scanner motor
does not operate.
1. Defective connector
cable or poor con-
tact in the connector.
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
Scanner motor and ISC PWB (YC5)
ISC PWB (YC3) and main PWB (YC11)
2. Defective drive trans-
mission system.
Check if the rollers and gears rotate smoothly. If not,
grease the bushes and gears. Check for broken gears and
replace if any.
3. Defective motor.
Replace the scanner motor.
4. Defective PWB.
Replace the main PWB and check for correct operation
(see page 1-5-49).
(4)
Registration motor
does not operate
(45 ppm/55 ppm
model only).
1. Defective connector
cable or poor con-
tact in the connector.
Reinsert the connector. Also check for continuity within the
connector cable. If none, replace the cable.
Registration motor and feed PWB 1 (YC25)
Feed PWB 1 (YC2) and engine PWB (YC5)
2. Defective drive trans-
mission system.
Check if the rollers and gears rotate smoothly. If not,
grease the bushes and gears. Check for broken gears and
replace if any.
3. Defective motor.
Replace the registration motor.
4. Defective PWB.
Replace the engine PWB and check for correct operation
(see page 1-5-54).
Summary of Contents for TASKalfa 3050ci
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Page 24: ...2LK 2LN 2LM 2LC 1 1 10 This page is intentionally left blank ...
Page 94: ...2LK 2LN 2LM 2LC 2 1 2 70 This page is intentionally left blank ...
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Page 682: ...1 1 INSTALLATION GUIDE INSTALLATION GUIDE FOR DOCUMENT PROCESSOR ...
Page 717: ...INSTALLATION GUIDE FOR PAPER FEEDER ...
Page 730: ...INSTALLATION GUIDE FOR LARGE CAPACITY FEEDER ...
Page 745: ...INSTALLATION GUIDE FOR SIDE DECK ...
Page 767: ...INSTALLATION GUIDE FOR SIDE MULTI TRAY ...
Page 803: ...INSTALLATION GUIDE FOR 1000 SHEETS FINISHER ...
Page 816: ...INSTALLATION GUIDE FOR 4000 SHEETS FINISHER ...
Page 832: ...INSTALLATION GUIDE FOR FINISHER ATTACHMENT KIT ...
Page 846: ...INSTALLATION GUIDE FOR CENTER FOLDING UNIT ...
Page 863: ...INSTALLATION GUIDE FOR MAILBOX ...
Page 871: ...INSTALLATION GUIDE FOR PUNCH UNIT ...
Page 891: ...INSTALLATION GUIDE FOR INNER JOB SEPARATOR ...
Page 892: ...1 2 3 A B ...
Page 893: ...7 8 4 5 6 ...
Page 894: ...11 9 10 ...
Page 895: ...A 1 2 3 2 14 15 12 13 16 ...
Page 896: ...B 3 2 1 2 19 17 18 ...
Page 897: ...21 22 20 ...
Page 898: ...26 27 23 24 28 25 ...
Page 899: ...30 29 ...
Page 900: ...INSTALLATION GUIDE FOR RIGHT JOB SEPARATOR ...
Page 901: ...5 1 2 3 4 5 7 7 6 A B C A B ...
Page 902: ...9 10 11 12 13 14 7 8 Ԙ ԙ Ԙ ԙ C ...
Page 903: ...INSTALLATION GUIDE FOR FAX SYSTEM ...
Page 928: ...INSTALLATION GUIDE FOR DOCUMENT TABLE ...
Page 929: ...A C D E F I B G H J M4 14 2 M4 8 7 2 3 1 ...
Page 930: ...5 6 7 4 C A B ...
Page 931: ...8 I 9 J 9 ...
Page 932: ...14 10 11 13 D J 12 ...
Page 933: ...G E F 18 15 16 17 J ...
Page 934: ...H 19 20 ...
Page 935: ...2011 ...
Page 936: ...2011 ...