6 Inspect the following for damage or contamination:

Lower pick-up roller assembly

Lower feed roller assembly

Lower pinch rollers

Lower cassette.

Are these parts clean and in good working order?

No: Repair or replace the parts as needed, then turn to TAG 002: Check & Problem Resolution .

Yes: You have not isolated the problem. Return to the beginning of this TAG.

7 Is misregistration the symptom of the problem?

No: Skew problems can only result from mechanical causes. Return to the beginning of this TAG.

Yes: Continue.

8 Run test prints.

Is the amount of misregistration within + or - 2 lines of the 20-line indicator from the leading edge of the test print?

No: Continue.

Yes: The registration is within specification. Turn to TAG 002: Check & Problem Resolution.

9 Open the printer’s rear cover and insert an interlock by-pass tool.

Set the four registration switches on the PCL board to off.

Run test prints.

Based on the test prints, increase the registration by changing the switches. Refer to the follow- ing chart.

Did resetting the switches resolve the problem?

No: Replace the paper timing roller assembly, then turn to TAG 002: Check & Problem Resolution . If this does not resolve the problem, replace the upper paper guide assembly or the paper timing guide, then turn to TAG 002: Check & Problem Resolution.

Yes: Turn to TAG 002: Check & Problem Resolution.

Table 3-5. PCL Board Switch Settings

 

Setting

 

DIP Switches

 

 

 

 

 

 

 

Number

1

2

3

4

 

 

 

 

 

 

 

 

0

 

OFF

OFF

OFF

OFF

 

 

 

 

 

 

1

 

OFF

OFF

OFF

ON

 

 

 

 

 

 

2

 

OFF

OFF

ON

OFF

 

 

 

 

 

 

3

 

OFF

OFF

ON

ON

 

 

 

 

 

 

4

 

OFF

ON

OFF

OFF

 

 

 

 

 

 

5

 

OFF

ON

OFF

ON

 

 

 

 

 

 

6

 

OFF

ON

ON

OFF

 

 

 

 

 

 

3-170

Troubleshooting Analysis Guide (TAGs)