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HP LaserJet P2010 Service Manual - Page 75

Engine control system circuit diagram, Engine control system

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Fixing unit AC input Fan Transfer charging roller Pressure roller Cartridge Engine controller PCB Fixing control circuit Low-voltage power supply circuit Fan motor drive circuit Reset Circuit High-voltage power supply circuit Memory tag circuit IC201 CPU Memory tag Video controller PCB Figure 5-4 Engine control system circuit diagram Main motor Solenoids Sensors Duplex driver PCB (Duplex model only) Option Scanner motor Laser driver BD sensor ENWW Engine control system 65

Section	Page
Product basics	11
Product features	12
Standard features	12
Network model features	12
Identify product parts	13
Control panel	15
Supported paper and other media	16
Understand paper and print media use	16
Supported paper and print media sizes	16
Custom paper sizes	17
Special paper or print media guidelines	17
Load media	19
Tray 1	19
Tray 2 and optional tray 3	19
Straight-through output path	20
Manual feed	20
Installation	21
Site preparation	22
Package contents	23
Install tray 3	24
Printer connections	25
USB and parallel connections	25
Network connections	25
Connect the printer to the network	26
Install the printer software for the network printer	26
Software for Windows	27
Supported operating systems	27
Windows printer drivers	27
Windows driver types	27
Install Windows software	27
To install printer software for Windows NT 4.0, Server 2003 (64-bit), Windows 98SE, Me, and XP (64-b ...	27
To install printer software for Windows 2000, XP (32-bit), Server 2003 (32-bit), and Vista (32-bit)	27
Configure the Windows printer driver	27
Software for Macintosh	29
Macintosh printer drivers	29
Install the Macintosh printer driver	29
Configure the Macintosh printer driver	29
PostScript Printer Description files (PPDs)	30
Printer information pages	31
Demo page	31
Configuration page	31
Supplies Status page	31
Manage the printer	33
Embedded Web server (network model only)	34
Open the embedded Web server	34
Information tab	35
Settings tab	35
Networking tab	35
Links	35
Maintenance	37
Replace the print cartridge	38
Redistribute toner	40
Clean the printer	41
Clean the print-cartridge area	41
Clean the printer media path	43
Clean the pickup roller (tray 1)	44
Replace the pickup roller (tray 1)	49
Clean the pickup roller (tray 2)	54
Replace the pickup roller (tray 2)	61
EconoMode	67
Theory of operation	69
Introduction	70
Internal components	71
Timing	73
Engine control system	74
Laser/scanner system	76
Pickup/feed/delivery system	77
Image-formation system	79
Removal and replacement	83
Introduction	84
Removal and replacement strategy	84
Electrostatic discharge	84
Required tools	84
Before performing service	85
Pre-service procedures	85
Parts removal order	85
Covers	86
Left-side cover	86
Right-side cover	86
Back cover	87
Top cover	88
Control panel	93
Formatter	95
Laser/scanner	96
Memory-tag-reader assembly	97
Fuser	99
Fan	99
Fuser	100
Interlock assembly	110
ECU	111
Main motor	118
Pickup and feed assemblies	120
Transfer roller	120
Registration assembly	121
Main gear assembly/tray 2 pickup solenoid	125
Print-cartridge door	129
Problem solving	131
Basic problem solving	132
Status-light patterns	134
Primary status-light patterns	134
Fatal error secondary messages	140
Accessory error secondary messages	144
Media problem solving	145
Printed page is different than what appeared on screen	147
Garbled, incorrect, or incomplete text	147
Missing graphics or text, or blank pages	147
Page format is different than on another HP LaserJet printer	148
Graphics quality	148
Improve print quality	149
Light print or faded	149
Toner specks	149
Dropouts	149
Vertical lines	150
Gray background	150
Toner smear	150
Loose toner	151
Vertical repetitive defects	151
Misformed characters	151
Page skew	152
Curl or wave	152
Wrinkles or creases	152
Toner scatter outline	153
Repetitive image defects	153
Clear jams	154
Print-cartridge area	154
Input trays	156
Output bin	159
Straight-through output path	160
Diagnostic resources	162
Engine test	162
Continuous self-test	162
Half self-test functional check	163
Drum rotation functional check	163
Heating element check	163
High-voltage contacts check	164
Checking the print cartridge contacts	164
Checking the high-voltage connector assembly	165
Printer software problems	166
Network-setup problem-solving	167
Reset the printer	168
NVRAM initialization	168
Super NVRAM initialization	168
Network reset	169
Cold reset	169
Troubleshooting tools and reference diagrams	170
General timing chart	170
Circuit diagram	171
Solenoids	173
Switches and sensors	174
Rollers and pads	175
Parts and diagrams	177
Assembly locations	178
Covers	182
Internal assemblies	186
Alphabetical parts list	212
Numerical parts list	222
Accessory/Consumable addendum	233
Order parts and supplies	234
Parts	234
Related documentation and software	234
Supplies	234
Order parts, accessories, and supplies	235
Order directly from HP	235
Order through service or support providers	235
Order directly through the embedded Web server	235
Supplies and accessories table	236
10/100 networking print servers	237
HP print cartridges	238
HP policy on non-HP print cartridges	238
Storing print cartridges	238
Print cartridge life expectancy	238
Saving toner	238
Service and support	239
Hewlett-Packard limited warranty statement	240
Limited warranty for print cartridges and image drums	241
Hewlett-Packard software license agreement	242
HP Customer Care	243
Availability of support and service	245
HP Care Pack™ Services and Service Agreements	245
Guidelines for repacking the printer	246
Printer specifications	247
Physical specifications	248
Electrical specifications	248
Acoustic emissions	249
Environmental specifications	250
Printer capacities and ratings	251
Memory specifications	251
Port availability	251
Regulatory information	253
FCC compliance	254
Environmental product stewardship program	255
Protecting the environment	255
Ozone production	255
Power consumption	255
Toner consumption	255
Paper use	255
Plastics	255
HP LaserJet print supplies	255
Return and recycling instructions	256
United States and Puerto Rico	256
Multiple returns (two to eight cartridges)	256
Single returns	256
Shipping	256
Non-US returns	256
Paper	256
Material restrictions	257
Disposal of waste equipment by users in private households in the European Union	257
Material Safety Data Sheet (MSDS)	257
For more information	257
Declaration of Conformity statements	258
Regulatory statements	259
Laser safety statement	259
Canadian DOC regulations	259
Korean EMI statement	259
Laser statement for Finland	260