right-front, removing 108
right-rear, removing 114
top, removing 115
creases, troubleshooting 521
crooked pages
troubleshooting 521
customer support
online 625
D
dark image, troubleshooting 518
date
codes for firmware 342
manufacture 341
DC controller
PCA, removing 197
DC controller, operation 8
defeating
interlocks 277
delivery unit
delivery drive assembly (simplex
models), removing 181
demo page 273
determine the problem source 268
developing stage 30
diagnostics 337
component 304
engine 276
LED 273
networks 377
page, printing 337
See also tests; troubleshooting
diagrams 539
Display Settings menu, control
panel 258, 365
disposal, end-of-life 633
document conventions iii
doors. See covers
driver PCA
removing 207
drum cleaning stage 33
duplex
paper path 62
duplexing unit
duplex drive assembly (duplex
models), removing 179
jam causes 504
E
EIO cards
buffer overflow 422
electrical specifications 628
electronic hardware recycling 634
electrostatic discharge (ESD) 82
end-of-life disposal 633
engine
diagnostics 276
engine speed
paper type 58
engine test button 279
engine-control system 7
environment, specifications 628
environmental stewardship
program 631
error messages
numerical list 390
types of 390
ESD electrostatic discharge (ESD)
82
Eurasian conformity 643
event log 273
clear 489
information 342
print 489
view 489
event-log messages 390, 488
F
faded print 517
fans
fuser, removing 192
power-supply fan and fan duct,
removing 190
FCC regulations 630
field-replaceable units (FRUs)
replacing 82
Finnish laser safety statement 640
firmware
date codes 342
version information 341
firmware, downloading new 535
flowcharts
troubleshooting 269
formatter
case, removing 123
PCA, removing 100
resets after replacing 526
formatter fan
removing 194
formatter lights 273
FRUs (field-replaceable units)
replacing 82
fuser
jam causes 503
jams 496
motor, removing 188
operation 58
part number 542
fuser drive assembly
removing 164
fusing stage 32
G
General Settings menu, control
panel 251, 348
H
high-voltage power supply
removing, first transfer 203
removing, imaging (developing)
202
removing, second transfer 205
HP Customer Care 625
HP Jetdirect print server
configuration page 341
lights 273
humidity requirements 628
humidity values, printed 337
I
ICB PCA
removing 194
image quality
calibration process 40
print, troubleshooting 517
imaging drums
diagnostic test 278
installation 82
screws 82
verify for optional accessories
339
See also replacing parts
interlocks
defeating 277
intermediate transfer belt (ITB) 98
internal clock errors 398
interpret control-panel messages
and event log entries 390