HP LaserJet 1010 Service Manual - Page 47

Operational overview

This chapter describes the general components of the HP LaserJet 1010 series and their

theory of operation.

Basic functions

........................................................................................................................

36

Formatter system

....................................................................................................................

37

Central processing unit

....................................................................................................

37

RAM

..................................................................................................................................

37

Universal Serial Bus interface

..........................................................................................

37

Parallel interface (HP LaserJet 1015 only)

.......................................................................

37

Control panel

....................................................................................................................

37

Draft mode

.......................................................................................................................

38

MEt

...................................................................................................................................

38

Enhanced I/O

...................................................................................................................

38

PJL overview

...................................................................................................................

38

Printer functions

......................................................................................................................

39

Engine control system (engine control unit and power assembly)

...................................

39

Image formation system

...................................................................................................

43

Printer paper feed system

................................................................................................

44

Jam detection

..................................................................................................................

46

Solenoid, sensors, and switches

......................................................................................

46

Basic sequence of operation (formatter-to-printer)

...........................................................

47

ENWW

35

Section	Page
Product Information	13
HP LaserJet 1010 series has three product configurations	14
The HP LaserJet 1010, 1012, and 1015	14
Introduction	15
Overview of product	16
Model and serial numbers	16
Hardware description	17
Firmware description	18
Product Specifications	19
HEWLETT-PACKARD LIMITED WARRANTY STATEMENT	21
Extended warranty	22
Print cartridge information	23
Refilled print cartridges	23
Recycling print cartridges	23
Declaration of Conformity	24
For Regulatory Topics ONLY, contact:	25
Laser safety statement	25
Canadian DOC regulations	25
Korean EMI statement	25
Laser statement for Finland	26
Installation and Operation	27
Operating environment	28
Identifying the control panel components	29
Product media specifications	30
Supported media sizes (printer)	30
Guidelines for using media	31
Paper and Transparencies	31
Common media problems table	31
Labels	31
Envelopes	32
Card stock and heavy media	32
Loading media	34
Loading media to print	34
Maintenance	35
Life expectancies of parts that wear	36
Cleaning the product	37
Cleaning the print path	37
Cleaning the print cartridge area	38
Cleaning the printer pickup roller	39
User-replaceable parts	41
Replacing the printer pickup roller	41
Replacing the printer separation pad	43
Replacing the main input tray (paper pickup tray assembly)	45
Replacing the output tray extension (delivery tray assembly)	46
Operational overview	47
Basic functions	48
Formatter system	49
Central processing unit	49
RAM	49
Universal Serial Bus interface	49
Parallel interface (HP LaserJet 1015 only)	49
Control panel	49
Draft mode	50
MEt	50
Enhanced I/O	50
PJL overview	50
Printer functions	51
Engine control system (engine control unit and power assembly)	51
Image formation system	55
Printer paper feed system	56
Jam detection	58
Solenoid, sensors, and switches	58
Basic sequence of operation (formatter-to-printer)	59
Removal and replacement	63
Removal and replacement strategy	64
Required tools	64
Before performing service	64
Print cartridge	64
Differences between the series models	65
Part removal order	65
User-replaceable parts	67
Replacing the printer pickup roller	67
Replacing the printer separation pad	69
Replacing the main input tray (paper pick-up tray assembly)	71
Replacing the output tray extension (delivery tray assembly)	72
Covers	73
Right side cover	74
Left side cover	77
Print cartridge access door, fuser cover, and rear panel	77
Front cover	80
Internal assemblies	82
Transfer roller assembly	82
Engine power assembly	84
Fuser (fixing) assembly	85
Paper pickup assembly	87
Engine control unit assembly	88
Laser scanner assembly	90
Troubleshooting	93
Basic troubleshooting	94
Control panel power-on functions	96
Power-on Functions: Time Ranges	96
Control Panel Pages	98
Control Panel Pages: Time Ranges	98
Control Panel Lights	99
Control Panel Light Patterns	99
Fatal Errors	103
Image troubleshooting	104
Print cartridge problems	104
Solving image-quality problems	104
Solving paper-feed problems	111
Solving print paper-feed problems	111
Functional checks	115
Half self-test functional check	115
Drum rotation functional check	117
High-voltage contacts check	117
Troubleshooting tools	119
Repetitive image defect ruler	119
Circuit diagram	120
Solenoid, sensors, and switches	121
Parts and diagrams	123
Ordering parts and supplies	124
Parts	124
Related documentation and software	124
Parts that wear	124
Accessories and consumables	125
Common hardware	126
How to use the parts lists and diagrams	126
Field-replaceable units	127
Alphabetical parts list	130
Numerical parts list	131

HP LaserJet 1010 Service Manual - Page 47

Operational overview

Page 47 highlights