FPGA operations 57, 60 FRUs (field replaceable units)

alphabetical list 162 numerical list 164 ordering 144

part numbers 147

removing and replacing 24, 70 user-replaceable 39

fuse, overcurrent protection 63

G

glass

calibrating scanner 48, 49 cleaning 36

copying from 29 diagram 156

media specifications 18 part number 157 removing 92 scanning operations 53 troubleshooting 123

H

hard disk

file directory page 135 initialization 45 locating 21

Help key 30

horizontal lines, troubleshooting 138 HP JetDirect card

locating 21 replacing 40

HP JetDirect page 132

HP LaserJet 4000 comparison 146 HP Technical Training 144

HP Web JetAdmin firmware updates 42

I

image quality specifications 15, 16 troubleshooting 136, 138

information pages 114, 130 initializing hard drive 45 input trays. See trays intake fan

connector 62 filter 86 locating 55 operations 61, 68 removing 106 troubleshooting 116, 122 voltage 63

intermediate PCB connector 62 operations 63

inverter PCB connector 62 operations 66 removing 103 testing 126 troubleshooting 123

J

jams

detection operations 68 misfeeds 140 troubleshooting 128

JetAdmin firmware updates 42

JetDirect card locating 21 replacing 40

JetDirect page 132

K

keys, control panel 30

L

lamp. See scanning lamp language, control panel 117 LaserJet 4000 comparison 146 leading edge calibration 48, 49 leading-edge sensor (PS1)

operations 68 testing 126

LEDs

control panel 30, 126

copy processor board (CPB) 59, 124 left-side cover, removing 84

lights

control panel 30, 126

copy processor board (CPB) 59, 124 lines, troubleshooting 138, 139

lock, optical-unit 20 low-voltage components 63

M

maintenance agreements 25 cleaning procedures 36 counts, clearing 127 kits 39

manuals 14, 144 media

capacity 15

HP, part numbers 145 jams 68, 128 misfeeds 140

sizes supported 18 trays. See trays troubleshooting 112, 140

memory

access door, locating 21 configuration page 130

copy processor board components 57 included 14

part numbers 145 menus

control panel 32, 33 service 127

messages

control panel 120 event log 117 firmware updates 44 language settings 117

MFP, defined 14

MIPS processor operations 57, 60 misfeeds 128, 140

model comparison 14, 146 model number 19 motors

operations 61

optical unit, removing 99 testing 126

voltage 63 multifeeds 128, 140

multifunction printer (MFP), defined 14

C9148-90909

Index 169