Phaser 3250 Laser Printer Service Manual 4-9
General Troubleshooting
No Power
When the printer is turned On, the LED’s on the Control Panel do not come
On.
Initial Actions
■ Cycle printer power.
■ If problem persists, refer to the following procedure.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
■ Main Controller Board, PL1.1.2
■ LVPS, PL1.1.4
■ Power Cord, PL1.1.19
■ LED Board, PL6.1.44
■ “Map 1 - Main Controller Board” on
page 10-6
■ “Map 7 - LVPS, HVPS, Fuser, Developer
Unit CRUM, and Power Switch” on
page 10-15
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 Check the LVPS Board signal.
1.Is there +24 V across:
■ CN3-16, CN3-13, CN3-11, CN3-9, and
CN3-7 pins
2.Is there +5 V across:
■ CN3-5, CN3-3, and CN3-1 pins
Replace the
Power Cord.
Go to step 2.
Go to step 3.
2 Does the error still occur? Go to step 3. Complete.
3 Is the Control Panel LED On? Go to step 5. Replace the
LED Board
(
page 8-75).
Go to step 4.
4 Does the error still occur? Go to step 5. Complete.
5 1.Check the power fuse on the LVPS.
2.Is the power fuse defective?
Replace the
LVPS
(
page 8-69).
Go to step 6.
6 1.Check the Main Control Board for correct
installation. Reseat the Main Control
Board (page 8-62).
2.Does the error still occur?
Go to step 7. Complete.
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