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HP LaserJet M1120 Service Manual - Page 215

Canadian DOC regulations, heating element

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Index Symbols/Numerics 600 dpi print-quality setting 118 A accessibility features 4 accessories part numbers 152 acoustic emissions 187 advanced software installation 8 after service checklist 50 alert messages 108 archive print setting 138 assemblies high-voltage connector, cleaning 134 part numbers 166 B background shading, troubleshooting 121 bands and streaks, troubleshooting 120 batteries included 192 before service checklist 49 bin, output capacity 4 jams, clearing 115 locating 5 blank copies, troubleshooting 130 blank scans, troubleshooting 126 box, unpack contents 18 C cables flat flexible, remove parts 48 part numbers 152 USB and network not included 18 Canadian DOC regulations 195 capacity output bin 4 cartridge part number 152 cartridge-door remove 76 cartridge-door release, locating 5 cartridges drum rotation test 131 high-voltage contacts, cleaning 133 HP fraud hotline 27 recycling 191 remove 65 replacing 25 status, checking 24 storing 24 warranty 183 caution toner on clothing 26 characters, troubleshooting 122 checklists after service 50 before service 49 print quality 119 checks engine test page 131 half-self-test 132 heating element 133 high-voltage power supply 133 circuit diagram 149 cleaning exterior 28 flatbed scanner glass 28 glass 28 high-voltage connection points 134 lid backing 28 paper path 29 scanner glass 28 cleaning page, printing 138 component diagram 147 components internal, locating 38 configuration page printing 30 connectors ECU 143 Formatter 142 contact image sensor (CIS) 36 control panel cleaning page, printing 29 messages, troubleshooting 108 overlay, remove 57 overlays part numbers 157 remove 58 secondary service menu 135 Service menu 138 copy quality troubleshooting 127 copy-quality test 51 copying media, troubleshooting 128 quality, troubleshooting 127 size, troubleshooting 130 troubleshooting 130 covers part numbers 168 covers, remove front 79 fuser 77 print-cartridge 76 rear 77 side 74 creases, troubleshooting 123 ENWW Index 199

Section	Page
Product information	17
Quick access to product information	18
Product comparison	19
Product features	20
Product walkaround	21
Front view	21
Back view	21
Interface ports	22
Serial number and model number location	22
Software description	23
Supported operating systems	23
Supported printer drivers	23
Software included with the product	23
Easy installation for Windows	23
Advanced installation	24
Macintosh software	24
Software for Windows	25
Embedded Web server (network models only)	25
Status Alerts software	25
Other Windows components and utilities	25
Software for Macintosh	26
Embedded Web server (network models only)	26
HP Director	26
Uninstall software	27
Windows	27
Macintosh	27
Media specifications	28
Supported paper and print media sizes	28
Supported paper types and tray capacity	29
Installation	31
Site preparations	32
Operating environment	32
Minimum system requirements	33
What was in the box	34
Install input devices	35
Priority input tray	35
Tray 1	36
Install supplies	37
Install the print cartridge	37
Maintenance	39
Manage supplies	40
Life expectancies of supplies	40
Check and order supplies	40
Store supplies	40
Replace supplies	41
Print cartridge	41
HP policy on non-HP supplies	42
HP fraud hotline	43
Clean the product	44
Clean the exterior	44
Clean the flatbed scanner glass	44
Clean the lid backing	44
Clean the paper path	45
Management tools	46
Information pages	46
Embedded Web server	46
Features	47
Operational theory	49
Basic operation	50
Sequence of operation for the base unit	50
Scanner functions and operation	52
Scanner functions	52
Scanner operation	53
Internal components (base unit)	54
Engine control system	55
Laser/scanner system	57
Pickup/feed/delivery system	58
Image-formation system	59
Removal and replacement	63
Removal and replacement strategy	64
Introduction	64
Removal and replacement warnings, cautions, notes, and tips	64
Electrostatic discharge	65
Required tools	65
Before performing service	65
After performing service	66
Post-service tests	67
Test 1 (print-quality test)	67
Test 2 (copy-quality test)	67
Parts removal order	68
Scanner assembly	69
Link assemblies and scanner support-frame spring	69
Scanner lid	72
Control-panel overlay	73
Control-panel assembly	74
Scanner assembly	76
Product base	81
Print cartridge	81
Separation pad	82
Pickup roller	83
Scanner cushions	86
Media input tray	87
Transfer roller	89
Side covers	90
Print-cartridge door	92
Rear cover and fuser cover	93
Front cover	95
Formatter	97
Power supply	98
Scanner support frame	102
Laser/scanner assembly	105
Main motor	109
Fuser	112
Paper-pickup assembly	116
Drive-gear assembly and drive belt	119
Problem solve	121
Problem-solving checklist	122
Control-panel messages	124
Alert and warning messages	124
Alert and warning message tables	124
Critical error messages	125
Critical error message-tables	125
Clear jams	127
Causes of jams	127
Where to look for jams	128
Clear jams from the input-tray areas	128
Clear jams from the output bin	131
Clear jams from the print-cartridge area	132
Avoid repeated jams	133
Print problems	134
Print-quality problems	134
Improve print quality	134
Print-quality settings	134
Temporarily change print-quality settings	134
Change print-quality settings for all future jobs	134
Identify and correct print defects	135
Print-quality checklist	135
General print-quality issues	136
Scan problems	140
Solve scanned-image problems	140
Scan-quality problems	142
Prevent problems	142
Solve scan-quality problems	142
Copy problems	143
Prevent problems	143
Image problems	143
Media-handling problems	144
Performance problems	146
Functional checks	147
Engine test page	147
Drum rotation test	147
Half self-test functional check	148
Perform a half self-test check	148
Perform other checks	148
Heating element check	149
High-voltage contacts check	149
Check the print-cartridge contacts	149
Check the high-voltage connector assembly	150
Service-mode functions	151
NVRAM initialization	151
Super NVRAM initialization	151
Secondary service menu	151
Problem-solving tools	153
Product information pages and reports	153
Configuration page	153
Demo page	153
Menu map	153
Service menu	154
Restore the factory-set defaults	154
Clean the paper path	154
Archive print	154
Problem-solving diagrams	156
Repetitive image defects	156
Interface ports	157
Formatter connectors	158
ECU connectors	159
Solenoid and motor	160
Rollers	161
Sensors	162
Major components	163
PCAs (base unit)	164
Circuit diagram	165
Firmware updates	166
Parts	167
Ordering information	168
Supplies and hinge tool	168
Cable and interface accessories	168
Whole-unit replacement	169
Control-panel overlays	173
Supplementry documentation and support	176
Parts lists and diagrams	178
Types of screws	179
Scanner assemblies	180
Assemblies	182
External covers and panels	184
Internal components (1 of 3)	186
Internal components (2 of 3)	188
Internal components (3 of 3)	190
Alphabetical parts list	192
Numerical parts list	194
Service and support	197
Hewlett-Packard limited warranty statement	197
Customer self repair warranty service	198
Print cartridge limited warranty statement	199
Customer support	200
HP maintenance agreements	200
Repacking the device	200
Extended warranty	200
Specifications	201
Physical specifications	202
Electrical specifications	202
Power consumption	202
Environmental specifications	203
Acoustic emissions	203
Regulatory information	205
FCC compliance	206
Environmental product stewardship program	206
Protecting the environment	206
Ozone production	206
Power consumption	206
Toner consumption	206
Paper use	206
Plastics	207
HP LaserJet print supplies	207
Return and recycling instructions	207
United States and Puerto Rico	207
Multiple returns (two to eight cartridges)	207
Single returns	207
Shipping	207
Non-US returns	208
Paper	208
Material restrictions	208
Disposal of waste equipment by users in private households in the European Union	208
Material Safety Data Sheet (MSDS)	208
For more information	208
Declaration of conformity	210
Safety statements	211
Laser safety	211
Canadian DOC regulations	211
EMI statement (Korea)	211
Laser statement for Finland	212
Substances table (China)	212

Match case Limit results 1 per page

Index

Symbols/Numerics

600 dpi print-quality setting

118

accessibility features

accessories

part numbers

152

acoustic emissions

187

advanced software installation

after service checklist

alert messages

108

archive print setting

138

assemblies

high-voltage connector,

cleaning

134

part numbers

166

background shading,

troubleshooting

121

bands and streaks,

troubleshooting

120

batteries included

192

before service checklist

bin, output

capacity

jams, clearing

115

locating

blank copies,

troubleshooting

130

blank scans, troubleshooting

126

box, unpack contents

cables

flat flexible, remove parts

part numbers

152

USB and network not

included

Canadian DOC regulations

195

capacity

output bin

cartridge

part number

152

cartridge-door

remove

cartridge-door release, locating

cartridges

drum rotation test

131

high-voltage contacts,

cleaning

133

HP fraud hotline

recycling

191

remove

replacing

status, checking

storing

warranty

183

caution

toner on clothing

characters, troubleshooting

122

checklists

after service

before service

print quality

119

checks

engine test page

131

half-self-test

132

heating element

133

high-voltage power

supply

133

circuit diagram

149

cleaning

exterior

flatbed scanner glass

glass

high-voltage connection

points

134

lid backing

paper path

scanner glass

cleaning page, printing

138

component

diagram

147

components

internal, locating

configuration page

printing

connectors

ECU

143

Formatter

142

contact image sensor (CIS)

control panel

cleaning page, printing

messages,

troubleshooting

108

overlay, remove

overlays part numbers

157

remove

secondary service menu

135

Service menu

138

copy quality

troubleshooting

127

copy-quality test

copying

media, troubleshooting

128

quality, troubleshooting

127

size, troubleshooting

130

troubleshooting

130

covers

part numbers

168

covers, remove

front

fuser

print-cartridge

rear

side

creases, troubleshooting

123

ENWW

Index

199