6 Open the back cover and install an interlock by-pass tool.

•Power-on-reset the printer.

•Check TP4-35 for +24 Vdc.

Is the voltage +24 Vdc?

No: Go to #11 in this TAG.

Yes: Continue.

7 Check J/P23-5 for +24 Vdc.

Is the voltage +24 Vdc?

No: Repair or replace the connectors or wiring from P41-35 to P23-5, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

8 Turn the printer off and unplug the power cord.

•Disconnect J/P41 and J/P24.

•Check the following for continuity: P41-31 to P24-1

P41-30 to P24-2

P41-40 to P24-3

Is there continuity?

No: Repair or replace the connectors or wiring from:

P41-31 to P24-1

P41-30 to P24-2

P41-40 to P24-3

Then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

9 Disconnect P85 from the high voltage unit.

•Check P85-3 to J25-7 for continuity.

Is there continuity?

No: Repair or replace the connectors or wiring from P85-3 to J25-7, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

10 Disconnect J/P96.

•Check P96-1 to J25-7 for continuity.

Is there continuity?

No: Repair or replace the developer power supply lead from J/P96-1 to P85-3, then turn to TAG 002: Check & Problem Resolution.

Yes: Replace the high voltage unit, then turn to TAG 002: Check & Problem Resolution.

Troubleshooting Analysis Guide (TAGs)

3-45