HP LaserJet Enterprise M552 - Troubleshooting process; Determine the problem source; Pre-troubleshooting checklist

Troubleshooting process
●
Determine the problem source
●
Power subsystem
●
Control panel checks
Determine the problem source
When the printer malfunctions or encounters an unexpected situation, the printer control panel alerts the
user to the situation. This section contains a pre-troubleshooting checklist and a troubleshooting
ow chart
to lter out many possible causes of the problem. Use the pre-troubleshooting checklist to gather
information about the problem from the customer. Use the troubleshooting owchart to help diagnose the
root cause of the problem. The remainder of this chapter provides steps for correcting problems.
●
Use the pre-troubleshooting check list to gather information about the problem from the customer. See
Pre-troubleshooting checklist on page 107.
●
Use the troubleshooting owchart to pinpoint the root cause of hardware malfunctions. The owchart
provides guides to the section of this chapter that contain steps to correct the malfunction. See
Troubleshooting owchart on page 108.
Before beginning any troubleshooting procedure, check the following issues:
●
Are supply items within their rated life?
●
Does the conguration page reveal any conguration errors?
NOTE: The customer is responsible for checking supplies and for using supplies that are in good condition.
Pre-troubleshooting checklist
The following table includes basic questions to ask the customer to quickly help dene the problem(s).
General topic Questions
Environment
●
Is the printer installed on a solid, level surface (+/- 1°)?
●
Is the power-supply voltage within ± 10 volts of the specied power source?
●
Is the power-supply plug inserted in the printer and the outlet?
●
Is the operating environment within the specied parameters?
●
Is the printer exposed to ammonia gas, such as that produced by diazo copiers or
oice cleaning materials?
NOTE: Diazo copiers produce ammonia gas as part of the copying processes.
Ammonia gas (from cleaning supplies or a diazo copier) can have an adverse eect
on some printer components (for example, the toner cartridge or cartridges OPC).
●
Is the printer exposed to direct sunlight?
Media
●
Does the customer use only supported media?
●
Is the media in good condition (no curls, folds, or distortion)?
●
Is the media stored correctly and within environmental limits?
ENWW Troubleshooting process 107