HP C30 manual TAG 702 Paper Size Detection Malfunction

TAG 702: Paper Size Detection Malfunction

Error Code: 702

Symptoms: Incorrect paper size displayed

Possible Defects: Upper cassette

Lower cassette

Upper paper size sensor

Lower paper size sensor

Connectors or wiring

PCL board

1 Turn the printer off and unplug the power cord.

•Verify that J/P52 and J/P40 are connected properly.

•Remove the upper and lower cassettes.

•Make sure that the rear and side paper guides are securely against the paper.

•Power-on-reset the printer.

•Insert the cassette exhibiting the problem.

Does the display still indicate the incorrect paper size?

No: A loose connector or incorrectly positioned paper guides were at fault. Turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

2 Remove the cassette exhibiting the problem.

•Take out the paper.

•Inspect the two paper size sensing balls on the bottom of the cassette by changing positions of the side and rear paper guides.

Is the paper size sensing mechanism in good working order?

No: Replace the defective cassette, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

3 Inspect the upper and lower paper size sensor assemblies.

Is either paper size sensor assembly damaged or improperly mounted?

No: Continue.

Yes: Remount, repair or replace the faulty paper size sensor assembly, then turn to TAG 002: Check & Problem Resolution.

4 Remove the upper paper size sensor assembly.

•Disconnect the upper circuit board from its mounting.

•Inspect the paper size sensor circuit board and mounting for damage or contamination.

Is the circuit board or mounting damaged or contaminated?

No: Continue.

Yes: Repair or replace the upper paper size sensor assembly, then turn to TAG 002: Check & Problem Resolution.

3-132 Troubleshooting Analysis Guide (TAGs)