HP Laserjet 9000 9040 9050 & MFPs Printer Resets Diagnostics

The following sections describe diagnostics for the printer.

Paper-path test

The paper-path test can be used to verify that various paper paths are working correctly or to troubleshoot problems with tray configuration.

To print a paper-path test
1 Press <check mark> to open the menus.
2 Use <Up Arrow> or <Down Arrow> to scroll to CONFIGURE DEVICE, and then press .
3 Use <Up Arrow> or <Down Arrow> to scroll to DIAGNOSTICS, and then press .
4 Use <Up Arrow> or <Down Arrow> to scroll to SET PAPER PATH TEST, and then press .
5 Use <Up Arrow> or <Down Arrow> to select the input tray that you want to test, the output bin, the duplex rinting accessory (if available), and the number of copies.
6 Use <Up Arrow> or <Down Arrow> to scroll to PRINT TEST PAGE, and then press to start

Service test
The service test verifies that the print engine is functioning correctly. This test is very useful for isolating printer problems. The test can be performed with that paper-handling accessories attached, but it will not activate any of the accessory motors, switches, or sensors.

To perform a service test
1 Turn off the printer.
2 Make sure that the paper path of the printer is clear of all media, and that the left, front, and right doors are closed.
3 Open tray 2 and tray 3.
4 Turn on the printer, and when the printer is ready press to open the menus.
5 Use or to scroll to CONFIGURE DEVICE, and then press .
6 Use or to scroll to DIAGNOSTICS, and then press .
7 Use or to scroll to SERVICE TEST, and then press . The service test can take up to two minutes to complete. The message PERFORMING SERVICE TEST appears on the control panel. 
8 When the test is complete, the message SERVICE TEST PASSED appears on the control panel, or up to five sets of four-digit numbers appear on the control panel. If no abnormalities were noted, (0000 0000 0000 0000 0000) appears. If abnormalities were noted, the four-digit code or codes appear in parentheses (0101 0111 0132 0000 0000). Write down these codes and match them to the descriptions and FRUs that are listed in table 21.
9 Close tray 2 and tray 3.
 

Table 22. Service test abnormality codes

Code	Description	FRU
0101	Cassette pickup-rod motor	Paper-input unit
0102	Cassette feed motor	Paper-input unit
0103	Cassette feed motor	Paper-input unit
0104	Tray 1 feed motor	Tray 1
0105	Switchback motor	Duplexer
0106	Duplex feed motor	Duplexer
0107	Duplex feed motor 2	Duplexer
0108	Side registration motor	Duplexer
0109	Pre-registration roller clutch	Registration assembly
0110	Registration roller clutch	Registration assembly
0111	Tray 1 feed roller clutch	Tray 1
0112	Coil jam sensor solenoid	Fuser assembly
0113	Face-up flapper solenoid	Delivery assembly
0114	Tray 1 pickup solenoid	Tray 1
0115	Duplex deflector solenoid	Duplexer
0116	Duplex flapper solenoid	Duplexer
0117	Upper cassette paper out solenoid	Paper-input unit
0118	Upper cassette lifter position sensor	Paper-input unit
0119	Upper cassette paper level sensor A	Paper-input unit
0120	Upper cassette paper level sensor B	Paper-input unit
0121	Upper cassette feed sensor A	Paper-input unit
0122	Upper cassette feed sensor B	Paper-input unit
0123	Lower cassette paper out sensor	Paper-input unit
0124	Lower cassette lifter position sensor	Paper-input unit
0125	Lower cassette paper level sensor A	Paper-input unit
0126	Lower cassette paper level sensor B	Paper-input unit
0127	Lower cassette feed sensor A	Paper-input unit
0128	Lower cassette feed sensor B	Paper-input unit
0129	Registration paper sensor	Registration assembly
0130	Pickup rod home position sensor	Paper-input unit
0131	Fusing unit delivery sensor A	Fuser assembly
0132	Fusing unit delivery sensor B	Fuser assembly
0133	Face-down bin delivery sensor	Delivery assembly
0135	Tray feed sensor	Tray 1
0136	Switchback sensor	Duplexer
0137	Duplex feed sensor	Duplexer
0138	Duplexer reaming paper sensor	Duplexer
0139	Face-down bin paper-full sensor	Delivery assembly
0140	Right door sensor	Paper input unit
0141	Duplex feed roller 1 home-position sensor	Duplexer
0142	Side registration guide home-position sensor	Duplexer
0143	OHT sensor	Registration assembly
0144	Coil jam sensor	Fuser assembly

Cold reset
Performing a cold reset clears all data from the printer memory and returns all of the default settings
to the factory settings.

CAUTION Performing a cold reset resets the Jetdirect configuration. To avoid making changes to your network configuration, remove the HP Jetdirect print server before performing a cold reset.

Note If possible, print a configuration page and menu map before performing a cold reset. This documents current settings for later reference.

To perform a cold reset, set the display language, or reset the maintenance kit
1 Turn off the printer.
2 Press and hold <Check Mark> (the 6 button on MFPs).
3 Turn on the printer.
4 Continue to hold <Check Mark> until all three control panel lights illuminate, and then release (the 6 button on MFPs).
5 Use <Down Arrow> (the 9 button on MFPs) or <Up Arrow>  (the 3 button on MFPs) to scroll to the appropriate selection (COLD RESET, SELECT LANGUAGE, or NEW MAINTENANCE KIT).

Note Other functions are available in this menu, but are not applicable.

6 Press <Check Mark> (the 6 button on MFPs).
The printer boot sequence is complete when READY appears on the control-panel display.

To initialize (format) a hard disk

Note Initializing a hard disk erases all of the data on the installed mass-storage devices.

1 Turn off the printer.
2 Press and hold PAUSE/RESUME (START on MFPs).
3 Turn on the printer.
4 Hold PAUSE/RESUME or START down until all three error lights illuminate.
5 Release the PAUSE/RESUME or START key.
6 Press <Left Arrow> (the 5 button on MFPs) until INITIALIZE DISKS appears on the control-panel display.
7 Press <Check Mark>  (the 6 button on MFPs).
The printer boot sequence is complete when READY appears on the control-panel display.


To initialize NVRAM or perform a skip disk

Note The model number, the serial number, the usage data, and the error event log information is retained when performing a disk initialization.

1 Turn off the printer.
2 Press and hold <Down Arrow> (the 9 button on MFPs).
3 Turn on the printer.
4 Release <Down Arrow> (the 9 button on MFPs).
5 Press <Up Arrow>  (the 3 button on MFPs).
6 Press PAUSE/RESUME (START on MFPs).
7 Use <Down Arrow>  (the 9 button on MFPs) or (the 3 button on MFPs) to scroll to the appropriate selection (NVRAM INIT or SKIP DISK).

Note Other functions are available in this menu, but are not applicable.

8 Press <Check Mark> (the 6 button on MFPs).

The printer boot sequence is complete when READY appears on the control-panel display.

Cold reset

Performing a cold reset clears all data from the printer memory and returns all of the default settings to the factory settings.

CAUTION Performing a cold reset resets the Jetdirect configuration. To avoid making changes to your network configuration, remove the HP Jetdirect print server before performing a cold reset.

Note If possible, print a configuration page and menu map before performing a cold reset. This documents current settings for later reference.

To perform a cold reset, set the display language, reset the maintenance kit, enable or disable embedded LAN

1 Turn off the printer.
2 Turn on the printer.
3 Wait until the printer begins counting memory.
4 Press and hold <Check Mark> (the 6 button on MFPs).
5 Continue to hold <Chjeck Mark>  until all three control panel lights illuminate, and then release <Check Mark> (the 6
button on MFPs).
6 Use <Down Arrow> (the 9 button on MFPs) or <Up Arrow> (the 3 button on MFPs) to scroll to the appropriate
selection (COLD RESET, SELECT LANGUAGE, NEW MAINTENANCE KIT, or ENABLE/DISABLE EMBEDDED LAN).

Note Other functions are available in this menu, but are not applicable.

7 Press <Check Mark>  (the 6 button on MFPs).
The printer boot sequence is complete when READY appears on the control-panel display.

To initialize (format) a hard disk

Note Initializing a hard disk erases all of the data on the installed mass-storage devices.

1 Turn off the printer.
2 Turn on the printer.
3 Wait until the printer begins counting memory.
4 Press and hold MENU (START on MFPs).
5 Hold PAUSE/RESUME or START down until all three error lights illuminate.
6 Release the MENU or START key.
7 Press <Left Arrow> (the 5 button on MFPs) until INITIALIZE DISKS appears on the control-panel display.
8 Press  <Check Mark> (the 6 button on MFPs).

The printer boot sequence is complete when READY appears on the control-panel display.

To initialize NVRAM or perform a skip disk

Note The model number, the serial number, the usage data, and the error event log information is retained
when performing a disk initialization
.
1 Turn off the printer.
2 Turn on the printer.
3 Wait until the printer begins counting memory.
4 Press and hold <Down Arrow>  (the 9 button on MFPs) until all three error lights illuminate.
5 Release <Down Arrow>  (the 9 button on MFPs).
6 Press <Up Arrow>  (the 3 button on MFPs).
7 Press MENU (START on MFPs).
8 Use <Down Arrow>  (the 9 button on MFPs) or <Up Arrow> (the 3 button on MFPs) to scroll to the appropriate selection (NVRAM INIT or SKIP DISK).

Note Additional functions are available in this menu but they are not applicable.

9 Press <Check Mark>  (the 6 button on MFPs).

The printer boot sequence is complete when READY appears on the control-panel display.

High-voltage power-supply check
The high-voltage power-supply PCA provides the necessary voltages for the electrophotographic processes. Use the following procedures to verify the operation of the high-voltage system. 

Print cartridge connection points Visually inspect the four connection points on the inside, right end of the print cartridge. If they are dirty or corroded, clean the connections. If they are damaged, replace the print cartridge.

High-voltage contacts
The high-voltage contact springs are mounted on the high-voltage power-supply PCA and protrude through the print cartridge cavity to contact the print cartridge. Verify that the contacts are not dirty or corroded and that the spring action is functional. If they are damaged, replace the high-voltage power-supply PCA.