Dell 1600n - Multifunction Laser Printer B/W Service Manual page 95

7.2. Printing Problems (malfunction)
7.2.1 Defective Operation (LCD WINDOW
• Description
Strange characters are displayed on the OPE Panel and buttons are not operated.
Check and Cause
1. Clear the memory.(see page 6.5.3)
2. Check if OPE HARNESS is connected to the Connection
B'd correctly.
7.2.2 Defective LCD Operation
• Description
Defective LCD Operation
Check and Cause
1. Clear the memory. (See page 6.5.3).
2. Confirm to catch a click sound, while a key on the OPE
panel is pressed on.
) Display
Solution
1. Try again after clearing the memory.
2. After confirming that OPE HARNESS is connected to
the Connection B'd correctly, if it is so, then replace
the OPE Ass'y and Main Board in sequence.
Solution
1. The key is wrong itself or wrongly assembled.
2. Even after the key has been replaced, it is still wrong,
try to replace the OPE Ass'y and the Main B'd in
sequence.
Troubleshooting
Service Manual
7-5