HP P2055 Manual

ProblemCauseSolution
The product turns on, the motor rotates,
and the control panel indicates the
ready state, but the product does not
print.
The product does not print.A component is defective.Perform an engine test to verify print-
engine components.
1.Print an engine test page. See
Engine test page on page 251.
2. If the engine test page does not
print, check all the connectors on
the ECU, and reconnect any cables
that are connected incorrectly.
3. If, after checking the connectors,
the error...

Menu map (HP LaserJet P2050 Series Printers only)
Print a menu map1.Press  OK to open the menus.
2. Use the arrow buttons to navigate to the  Reports submenu, and then press  OK.
3. Use the arrow buttons to navigate to the  Menu structure submenu, and then press  OK to print the
menu structure.
4. Press  X to exit the menus.
190 Chapter 7   Solve problems ENWW 

Troubleshooting process
When the product malfunctions or encounters an unexpected situation, the product control panel alerts
you to the situation. This chapter contains information to help diagnose and solve problems.
● Use the pre-troubleshooting checklist to evaluate 
the source of the problem and to reduce the
number of steps that are required to fix the problem.
● Use the troubleshooting flowchart to pinpoint 
the root cause of hardware malfunctions. The
flowchart guides you to the appropriate...

General topicQuestions
Covers●Is the front cover closed?
Condensation●
Does condensation occur following a temp
erature change (particularly in winter
following cold storage)? If so, wipe affected area dry or leave the product on
for 10 to 20 minutes.
● Was a print cartridge installed soon after being moved from a cold to a warm
room? If so, allow the print cartridge to sit at room temperature for 1 to 2 hours.
Miscellaneous
●Check for and remove any non-HP components (print cartridges, memory
modules,...

Tools for troubleshooting
The section describes the tools that can help you solve problems with your device.
Continuous self-test (HP LaserJet P2050 Series only)
The continuous self-test puts the device into a continuous printing mode without having to send jobs to
it.
1. Confirm that the product is  in a Ready state. Press OK to enter the main menu.
2. Simultaneously press and hold the down arrow 
 and Cancel button .
3. Press  OK to re-enter the main menu.
4. Navigate to the secondary service menu.
5....

3.Mark the drive gear on the cartridge with a felt -tipped marker. Note the position of the mark.
4. Replace the print cartridge and close the print-ca rtridge door. The startup sequence should rotate
the drum enough to move the mark.
5. Open the print-cartridge door and inspect the gear th at was marked in step 3. Verify that the mark
moved.
If the mark did not move, inspect the main drive assembly  to make sure that it is meshing with the print
cartridge gears. If the drive gears appear function al and...

If one is dirty or corroded, clean the connection with isopropyl alcohol. If one is damaged, replace the
print cartridge. See 
Print cartridge on page 102.
Figure 7-1   High-voltage contact poin ts (on the print cartridge)
2
1
3
Figure 7-2  High-voltage contact points (on the product)
2
3
1
CAUTION: After removing the print cartridge, handle it only on the ends.
ENWW Tools for troubleshooting 195 

Component locations
NOTE:Control-panel messages appear on HP LaserJet P2050 Series Printers only.
Figure 7-3  Components on the left side of the product
23
1
7
65
4
Table 7-2   Left-side components
ReferenceComponentDescriptionIf disconnected or blocked
1Formatter  
2J2Connector to control panelBlank display
3J1FFC to laser drive PCA 
4SW301Cartridge door switchControl-panel message:  Door
open appears.
5SL1Tray 1 pickup solenoid (J4)Control-panel message:  Jam in
Tray 1  appears.
6J3Connector to Tray 1...

Figure 7-4  Components on the right side of the product
12
3
4
5
Table 7-3  Right-side components
ReferenceComponentDescriptionIf disconnected or blocked
1Connector PCASee Figure 7-5 Components on
the connector PCA on page 198
for more information.
 
2FM1Main fanControl-panel message:  57 Fan
error  appears.
Fan rotates about 30 seconds
after being turned on.
3Paper feeder connectorConnector to optional Tray 3 
4SL2Tray 2 solenoid (J1104)Control-panel message:  Jam in
Tray 2 appears.
5 SW1001 Power...

Figure 7-5  Components on the connector PCA
1
2
3
4
Table 7-4  Connector PCA components
ReferenceComponentDescription
1J1101Duplex reverse solenoid (SL3)
2J1103Connector to scanner motor
3J1105Connector to main cooling fan
4 J1104 Connector to Tray 2 solenoid (SL2)
Figure 7-6  Components on the rear side of the product
12
3
4
198 Chapter 7   Solve problems ENWW