HP LaserJet Pro M402d

Determine the problem source
The following table includes basic questions to ask the customer to quickly help dene the problem or
problems.
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 coping processes.
Ammonia gas (from cleaning supplies or a diazo copier) can have an adverse aect
on some printer components (for example, the toner cartridge imaging drum).
●
Is the printer exposed to direct sunlight?
Paper
●
Does the customer use only supported paper?
●
Is the paper in good condition (no curls, folds, or distortion)?
●
Is the paper stored correctly and within environmental limits?
Input tray
●
Is the amount of paper in the tray within specications?
●
Is the paper correctly placed in the tray?
●
Are the paper guides aligned with the stack?
Supplies
●
Is the toner cartridge installed correctly and rmly seated?
●
Has the sealing tape been removed from the toner cartridge?
●
Is the toner cartridge within its estimated life? (Check the supplies status page.)
Transfer roller and fuser
●
Are the transfer roller and fuser installed correctly?
Covers
●
Are the front and rear doors rmly closed?
Condensation
●
Does condensation occur following a temperature change (particularly in winter
following cold storage)? If so, wipe aected parts dry or leave the printer on for 90
to 120 minutes.
●
Was a toner cartridge opened soon after being moved from a cold to a warm room?
If so, allow the toner cartridge to sit at room temperature for 1 to 2 hours.
Miscellaneous
●
Check for and remove any non-HP components (for example, a toner cartridge)
from the printer.
●
Remove the printer from the network and make sure that the failure is with the
printer before beginning troubleshooting.
46 Chapter 2 Solve problems ENWW