HP 2500 L Service Manual

EN 6 Troubleshooting209
Service mode functions
Cold reset 
A cold reset sets most, but not all, default variables stored in NVRAM back to factory default 
values. For example, It typically does not reset the page count, paper tray sizes, localization 
language, or formatter number. To reset all variables, see  “NVRAM initializer ” on page 209.
To perform a cold reset
1 Turn the printer off.
2 Press and hold down the  G
O button.
3 Turn the printer on and continue to hold the  G
O button
4 After the Go,...

210Troubleshooting C9706-90926
Troubleshooting tools
Demo page 
To print the Demo page, press  (GO) when the printer is Ready (Ready light on) and is not 
printing. You can also view this page from the HP Color LaserJet 2500 Series Toolbox.
Configuration page 
The Configuration page lists current settings and properties of the printer. You can print a 
Configuration page at the printer control panel, in the embedded Web server, or from the 
HP Color LaserJet 2500 Series Toolbox. To print the...

EN 6 Troubleshooting211
Supplies Status page 
The Supplies Status page lists the remaining life of HP print cartridges and HP imaging drums. It 
also lists the estimated number of pages that can be printed with the remaining supplies, number 
of pages printed, and other supplies information. You can print a Supplies Status page at the 
printer control panel or from the embedded Web server. To print at the printer, press  ( G
O) 
and ( C
ANCELJOB) simultaneously. (The Configuration page also prints. If...

212Troubleshooting C9706-90926
General timing charts
Figure 112.General timing chart —WAIT period 

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Figure 113.
General timing chart —one page, full-color, normal speed 

214Troubleshooting C9706-90926
Figure 114.
General timing chart —one page, full-color, half speed 

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Locations of connectors
Figure 115. Locations of printer connectors (1 of 3) 

216Troubleshooting C9706-90926
Figure 116.
Locations of printer connectors (2 of 3)
Figure 117. Locations of printer connectors (3 of 3) 

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Figure 118.
Locations of 250-sheet tray connectors
Figure 119. Locations of 500-sheet tray connectors 

218Troubleshooting C9706-90926
Dc controller connections
Figure 120.Dc controller connections