- Hewlett-Packard LaserJet Printer Service Manual
Index
A
AC power distribution 5-6
circuitry 5-6
accessories and supplies 8-5
acoustic emissions 1-6
assistance, technical 1-12
B
background scatter 7-16
black page 7-16
blank page
all pages 7-18
occasional 7-18
bottom assemblies
DC Controller 6-44
formatter PCA 6-47
memory door guide 6-42
motor 6-43
C
cable pinouts 7-30
cables
replaceable 8-6
capacities: output tray 1-3
caution messages 6-3
CDRH B-1
Center for Devices and Radiological
Health (CDRH) B-1
character voids 7-16
circuit protection 5-6
class 1 laser product B-1
class B digital device B-4
cleaning
printer 4-6
spilled toner 4-8
clutches and sensors 5-17
common hardware 8-6
consumables
ordering 8-4
printer 1-10
control panel 1-3
described 5-9
features 1-3, 3-3
layout 3-3
messages 7-8
self test for printer errors 7-8
settings 5-9
using 3-3
covers 8-7
covers and doors 8-8
back cover 6-6
EP Door 6-8
main cover and paper input assembly
6-10
memory door 6-9
CPU 5-8
CPU, printer 5-8
D
data light 3-3
DC Controller 8-16
diagram 7-6
DC Controller system 5-5
DC power distribution
circuitry 5-6
explained 5-6
defect ruler, repetitive image 7-28
delivery assembly 8-24
Department of Health and Human
Services (DHHS) B-1
DHHS B-1
diagrams 8-3
dimensions, printer 1-3, 1-6, 2-4
distribution system
AC 5-6
documentation
related 1-10 to 1-11
doors 8-7
DRAM
installation 6-5
dropouts 7-17
drum
photosensitive 5-13, 7-13, 7-22 to
7-23
drum cleaning process
described 5-12 to 5-13
drum conditioning
described 5-12 to 5-13
drum rotation functional check 7-23
E
EconoMode 1-3, 5-10
print speed 5-10
vs. normal mode 5-10
electrical specifications 1-6
emissions
acoustic 1-6
engine test 3-10, 7-21
printing 7-21
engine test button location 7-21
engine test microswitch, SW201 5-5
environment
operating 2-3
environmental requirements 2-5
error light 3-3
unclearable 7-9
exchange program 1-10
F
faded print 7-14
faulty image examples 7-14
FCC statement B-4
features
control panel 1-3, 3-3
feed assembly 8-20
Finland laser statement B-2
fonts
downloaded 5-6
internal 1-3
internal character sets 5-8
storing 5-8
fonts, internal 1-3
form feed light 3-4 to 3-5
formatter PCA 8-16
Motorala 68030 microprocessor 5-8
Bi-tronics interface 5-8
DC controller PCA 5-19
described 5-8
engine test print 3-10
HVPS PCA 5-7
REt 5-9
self test bypass 5-5
voltages 5-6
formatter PCA 5-8
formatter system
described 5-8
front door components 8-10, 8-12
Front Panel Button, described 5-7
functional overview 5-1 to 5-22
functions, basic printer 5-3
fusing process 5-14
H
half page blank 7-17
half self test check
purpose 7-22
half self test functional check 7-22
hardware, common 8-6
high voltage power distribution 5-7
high voltage power supply PCA 5-7
high-voltage power supply check 7-24
horizontal stripes 7-15
HPD, HP’s Distribution Center 1-11
I
identification, labels 1-4
identification, printer 1-4
image defects 7-28
image developing 5-12, 5-14
image formation system
block diagram 5-12
DC controller 5-8
described 5-12
features 5-12
toner cartridge 5-13, 7-13
image formation troubleshooting 7-13
image fusing 5-12, 5-14
image transferring 5-12, 5-14
image writing 5-12 to 5-13
installation
DRAM 6-5
installing
memory cards 6-5
interfaces
Index
Index-1