4-12 Phaser 3300MFP Service Manual
General Troubleshooting
No Power
When system power is turned on, the Control Panel LEDs do not come on.
Vertical Line is Curved
When printing, a vertical line becomes curved.
Check and Cause Solution
1. Check if the power input and SMPS
output are normal.
1. Replace the power supply cord or
SMPS.
2. Check for defective of LCD-Panel on
the front-cover if the LCD of Panel does
not appear after normal warming-up.
2. Replace the Control Board.
3. Replace the LCD-panel.
Check and Cause Solution
1. Check the stability of +24 V in the
Control Board linking with LSU.
1. Replace LSU.
2. Replace the Control Board.
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