Vertical Line Getting Curved - Dell 1815 Mono Laser Service Manual

7.2.10 Vertical Line Getting Curved

When printing, vertical line gets curved.
• Description
Check and Cause
1. If the supply of +24v is unstable in the Main Control board
linking with LSU, check drive by Engine
Diagnostic Code 1 LSU Motor on.
1. Replace LSU.
Test Mode :
2. Replace the Main Control board.
Troubleshooting
Solution
Service Manual
7-9