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HP LaserJet 9000 mfp

Tags : HPLaserJet9000mfpC8523AQ2458AC8523-90921 
HP LaserJet 9000 mfp Manuel de service

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Description

HP LaserJet 9000 mfp (C8523A) (Q2458A) Service Manual
Part number: C8523-90921
First Edition, March 2002

List of tables
List of figures
1 Product information
Product features . 16
Product specifications . 17
Identification . 17
Specifications 17
Product overview. 19
Assembly identification . 19
External assembly locations . 20
Interface connections 21
Accessories22
Regulatory information 23
Service approach 23
Parts and supplies 23
Warranty 23
Limited warranty for the print cartridge . 23
Service and support . 24
Worldwide service and support offices 25
2 Product requirements
Space requirements 28
Setup 30
Initial setup 30
Unpacking the MFP . 31
Removing the MFP from the shipping pallet . 32
Initial hardware setup 33
Installing the finishing device 35
Testing MFP printing and copying functions . 36
3 Product configuration
Control panel 38
Control panel layout 38
Touch-screen graphical display layout . 39
Settings and defaults41
Setting the display language. 41
Setting tray registration 41
Print driver information . 43
Factory default settings 43
Control panel menus 46
Menu map. 46
Using a menu map 46
Retrieve job menu 47
Information menu . 47
Paper handling menu 47
Configure device menu. 49
Diagnostics menu . 51
Service menu .51
Remote firmware upgrade . .52
Downloading the new firmware to the MFP . .52
Using HP Web JetAdmin . .53
4 Product maintenance
Cleaning the MFP and accessories .56
General cleaning . .56
ADF cleaning .57
Glass cleaning . .63
5 Theory of operation
Differences in print engines .66
Mechanical structure . .68
Motors and fans . .70
Basic block diagram .72
Basic system configuration. .73
Scanner unit systems.73
Scan mode.73
Power supply assembly .75
Low-voltage power supply circuit .78
Scanner controller circuit . .80
Flatbed operation .81
Flatbed document exposure control .81
Flatbed optical drive control .82
Flatbed optical unit operation.83
Flatbed document size detection . .84
ADF operation .87
ADF document exposure control . .87
ADF document feed control . .88
ADF document size detection . .90
ADF feeder sensors . .91
ADF document skew detection .92
Scanned data flow . .93
Copy processor board .94
CPB terminology . .94
Scanning process control signals. .95
Typical scanning process flow . .95
Copy processor board LEDs .96
6 Removal and replacement
Introduction.101
Removal and replacement strategy . .101
Electrostatic discharge.101
Required tools .101
External covers. .102
Control panel . .102
ADF feeder cover . .104
ADF feeder cover handle . .106
ADF back cover . .107
ADF front cover . .108
Lower delivery roller cover . .109
White board cover . .110
Copy processor board .111
Flatbed rail cover .112
Flatbed back cover. .113
Flatbed right cover . .114
Flatbed left cover 115
Flatbed upper front cover 116
Flatbed lower front cover 117
ADF base cover assembly . 118
Glass123
Internal . 125
ADF optical unit125
ADF scanning lamp 130
ADF shading filter 133
Flatbed optical unit . 134
Flatbed scanning lamp 137
Flatbed shading filter139
Switch and solenoids. 141
ADF feeder cover detection switch . 141
Weight solenoid . 142
Shutter solenoid . 143
Motors and fans. 144
Pickup motor 144
Delivery motor. 146
Flatbed motor . 148
Power supply assembly . 150
ADF fan assembly153
Flatbed fan assembly . 154
PCB assemblies 155
ADF analog processor PCB 155
ADF inverter PCB 156
ADF intermediate PCB 157
ADF width detection sensor assembly 158
Flatbed inverter PCB159
Flatbed intermediate PCB160
Scanner controller board. 162
Intermediate PCB assembly 164
Power supply assembly . 165
Rollers and belts 168
Pickup roller (D-roller) . 168
Pickup roller assembly 169
Feed roller assembly170
Lower registration roller assembly . 171
Lower delivery roller 177
Upper delivery roller assembly 179
Separation belt assembly 180
Separation belts . 183
Scan engine 185
7 Troubleshooting
Troubleshooting process . 190
Preliminary operating checks 191
Power on 192
Power-on defects 192
Malfunction troubleshooting 193
Troubleshooting with control panel messages . 194
Control panel display . 194
Event log page 194
Control panel messages 197
MFP message tables . 198
Alphabetic error messages 198
Numeric error messages 200
Troubleshooting with the copy processor board 203
User- and service-level diagnostics . .205
Diagnostics. .205
ADF paper-path test . .205
Service test .206
Service-level diagnostics . .207
Service menu .207
ADF and glass calibrations.209
ADF calibrations. .209
Glass calibrations.217
Jam troubleshooting .220
Jams.220
Evaluating the information pages . .222
Configuration page .222
Jetdirect page .224
Supplies status page . .225
Usage page . .226
File directory page . .227
Image-formation troubleshooting . .228
Image defects. .229
Measurement and adjustment . .232
ADF unit height adjustment .232
ADF skew adjustment .234
ADF width sensor volume adjustment .236
Weight solenoid stroke adjustment .237
Scanner controller PCB . .238
Connector locations . .239
Electrical structure .240
Wiring diagrams .241
8 Parts and diagrams
Introduction.244
Ordering parts .244
Consumables, supplies, accessories,
FRUs, and documentation . .245
Common hardware. .247
Illustrations and parts lists .248
MFP system assembly .249
Image scanner .251
External panels and covers .253
Flatbed scanner assembly . .255
Flatbed optical assembly .259
ADF scanner assembly . .260
Paper pickup assembly . .262
ADF main assembly .266
ADF optical assembly .268
PCB assemblies. .269
Alphabetical parts list .270
Numerical parts list .274



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