Samsung ML-1440 Service Manual - Page 59

Vertical Line Getting Curved

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Troubleshooting 4-4-10 Vertical Line Getting Curved • Description When printing, vertical line gets curved. Check and Cause 1. If the supply of +24v is unstable in the Main Control board linking with LSU, check drive by DCU Mode: LSU Check -05- LSU Motor on. 1. Replace LSU. Solution 2. Replace the Main Control board. Samsung Electronics 4-21

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Troubleshooting
4-21
Samsung Electronics
4-4-10 Vertical Line Getting Curved
• Description
When printing, vertical line gets curved.
Check and Cause
Solution
1. If the supply of +24v is unstable in the Main Control board
linking with LSU, check drive by DCU Mode: LSU Check
-05- LSU Motor on.
1. Replace LSU.
2. Replace the Main Control board.