UB-5365, UB-5865 (serv.man2) - Panasonic Other Service Manuals Service Manual (repair manual). Page 105

105

U13

Paper Jamming
error

1. The copy paper is left in the Printer 

Unit.

2. During copy operation, the copy 

paper does not reach the Top Sen-
sor, or it passed through the Top 
Sensor but was not output to the 
Output Port.

3. During copy operation, no copy 

paper was fed.

1. Open the Printer Door and remove the jamming paper.
2. Check the paper feed mechanism from the Paper Sensor to the Top 

Sensor by Change Gear control.

3. Clean the Pick-up Roller.
4. Check the transportation mechanism from the Top Sensor to the Output

Port by Change Gear control.

5. Check the mechanism of the Printer Motor.
 (1) Is the rotation direction of the motor gear clockwise seen from the left on

paper feed mode?

 (2) Is the rotation direction of the motor gear counterclockwise seen from

the left on transportation mode?

6. Check the connection between the Printer Motor and CN1014 

(CONTROL Board).

7. Check Q1016’s soldering state and the following printer motor control 

signals (CONTROL Board).
CN1014-1st, 2nd, 5th and 6th pins (or Q1015-16th, 12th, 14th and 10th
pins)

→ 100 Hz (immediately after copy start) / 50 Hz (during copy operation)

8. Check the soldering state of Q1008, Q1009, Q1012, and Q1014. 

Then, check the signals on the following parts.

→ 3rd pins for Q1008, Q1009, Q1012, Q1014,  2nd pins of 

        Q1008, Q1009, Q1012, and Q1014: 100 Hz (immediately after starting
          copy) / 50 Hz (during copy operation)
9. Replace faulty cables or connectors.
10. Replace faulty gears or the Printer Motor.
11. Replace erroneous parts or boards.

1. The Top Sensor or the Actuator does

not work correctly.

1. Check the mechanism of the Actuator.

→ Does the Actuator cut off the optical sensor of IC500 (TOP SENSOR

Board) when the copy paper is on the Top Sensor?

2. Check the connection between CN500 (TOP SENSOR Board) and

CN1005 (CONTROL Board).

3. Check the soldering state of the TOP SENSOR Board, and if there is a

problem, provide resoldering.

4. Check the soldering state of R1324 and R1172 on the CONTROL Board,
    and if there is a problem, provide resoldering.
5. Check the following signals on the TOP SENSOR Board.
 (1) CN500-1st pin: +3.3 V
 (2) CN500-2nd pin: Approx. 0 V (no copy paper)
6. Check the following signals on the CONTROL Board.
 (1) CN1005-1st pin: +3.3 V
 (2) CN1005-2nd pin: Approx. 0 V (no copy paper)
7. Replace the faulty Actuator.
8. Replace faulty cables or connectors.
9. Replace faulty parts or the TOP SENSOR Board.
10. Replace the CONTROL Board.