4 Does the PRINTER OPEN light come on with all the covers closed?

No: Go to #25 in this TAG.

Yes: Continue.

5 Operate the top and front cover interlock switch actuators.

Are the interlock switch actuators working properly?

No: Repair or replace any defective actuator, then turn to TAG 002: Check & Problem Resolution .

Yes: Continue.

6 Use extreme caution: Check from J/P4-4 to J/P4-3 for +100 Vac.

Is the voltage +100 Vac?

No: Continue.

Yes: Repair or replace the connectors or wiring from: P9-2 to P4-4 or P9-1 to P4-3. If this is a duplex printer and the problem remains, go to TAG 900: Top Cover Interlock Malfunc- tion, Duplex. If this corrects the problem, turn to TAG 002: Check & Problem Resolution .

7 Turn the printer off and unplug the power cord.

•Remove the upper fuse in the AC power supply unit.

•Check the fuse for continuity.

Does the fuse have continuity?

No: Continue.

Yes: Go to #10 in this TAG.

8 Replace the upper fuse in the AC power supply unit.

•Reconnect the power.

•Power-on-reset the printer.

Was the power-on-reset successful?

No: Go to #14 in this TAG.

Yes: Continue.

9 Remove the developer unit.

•Run diagnostic test 010 for approximately 5 seconds, then stop.

•Turn the printer off and unplug the power cord.

•Remove the fuse.

•Check the fuse for continuity.

Does the fuse have continuity?

No: Go to #12 in this TAG.

Yes: A defective fuse was at fault. Turn to TAG 002: Check & Problem Resolution.

Troubleshooting Analysis Guide (TAGs)

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