HP designjet l65500 Manuale Di Servizio

172

Troubleshooting

nect J11 P26/25: Repair or replace switch and wires associated to the fault. In case of mechanical 

damage on the pinch lever handle replaced the system  page 597.

2.

Replace the Main Interconnect Board  page 520.

The drive roller encoder disc contain a zero mark which is used as a reference for the drive roller encoder 

movement. 

Whenever a substrate is loaded, the system looks for this zero position to perform the correct substrate 

advancements.

A.

Drive Roller Encoder Disc dirty.

B.

Drive roller encoder PCA board not correctly positioned or faulty

C.

Drive roller encoder disc faulty or loose.

1.

Clean the driver roller encoder disc in a complete revolution

2.

Check the driver roller encoder sensor is correctly positioned and attached, check the driver roller 

encoder disc is correctly located in the sensor of the PCA.

3.

Replace the Drive Roller encoder PCA  page 552.

4.

Check the drive roller encoder disc, ensure it is correctly positioned and attached to the aluminium 

disc support, ensure the support is correct attached to the driver roller.

5.

Replace the drive roller encoder disc if any fault is found there.

Only in LX800 with Ink Collector installed, when starting to print (beginning of job) and the PPS is in an 

unknown position.

A.

PPS not properly initialized with ink collector.

B.

Failure in the PPS system not possible to initialize.

1.

Remove the ink collector from the printer, reboot and go to the media load section. Enter in the PPS 

(carriage beam height submenu) and set the PPS in the appropriate printing position.