Service Tests
Entering Service Mode 1
While holding the Reprint key down switch the Printer ON Once the the LEDs begin to light up one by one release the Reprint key
Entering Service Mode 2
While holding the Media Source key down switch the printer ON Once the the LEDs begin to light up one by one release the Media Source key
Stopping a Test
The service tests are continuously repeated in Service Mode 1 until you press the Cancel and Media Source keys To stop a test in Service Mode 2 press any of the front1panel keys To exit any Service Mode you must power OFF the Printer
Front anel Test
Purpose 1 Verify the operation of the front1panel keys and LEDs
In service mode 1 press Front anel Test Form Feed Key
Check that all LEDs are functioning correctly when they flash
Each time a key is pressed the Coated LED LED I will be lit
If a key fails the Coated LED LED I will remain OFF
If the test fails: Check that the cable for the Front Panel Assembly is connected to the Electronics Module. Also make sure that the cable is NOT damaged or twisted. Replace the Front Panel Assembly. Replace the Electronics Module.
Carriage Axis (Y$axis) Test
Purpose 1 Verify the operation of the components of the Carriage xis
Always make sure that the carriage is parked in the service station before starting
this test.
In service mode 1 press Carriage$Axis Test Reprint Key
If the test passes the Fast LED LED A will light up after the first cycle
If there is a Y1axis shutdown the Fast LED LED A will start to flash
If the test fails: Clear any binding due to a media jam. Turn the Printer off and manually move the carriage along the carriage axis. Check for any areas where the carriage may be binding. Ensure that the belt and belt pulley are in correct working order. Remove dirt from the pulley that could cause the belt to slip. Remove dirt from the slider rod and chassis beam. Apply oil (Anderol 4068, HP part number: 604000858) to the carriage bushings. At high temperatures, and if the fan is not working correctly, the internal resistance of the motor driver may increase, causing a decrease in the voltage between the motor contacts, and a shutdown of the motor. Ensure that the encoder strip is not inverted, damaged or absent. Reconnect or replace the trailing cable. Replace the carriage assembly.
6 Quick Reference Service Manual
