- HP Printer User Manual
Table Of Contents
- hpLaserJet 9055mfp (Q3631A) hpLaserJet 9065mfp (Q3632A)
- service manual
- Contents
- How to use this manual
- Safety
- MFP overview
- Overview of system
- hpLaserJet9055mfp/9065mfp product specifications
- Central cross-sectional view
- Drive system diagram
- Fuser/web drive section
- Drum drive section
- Developing drive section
- Paper feed/vertical conveyance/tray up drive sections
- Tray1 paper feed/automatic duplex unit (ADU) pre-registration drive section
- Charging and transfer/separation wire cleaning drive section
- Automatic Duplex Unit (ADU) conveyance drive section
- Paper exit drive section
- Toner supply drive section
- Optics drive section
- MFP unit explanation
- MFP disassembly/assembly
- External section
- Drive section
- Scanner section
- Laser scanner unit
- Drum unit
- Corona unit
- Screws that must not be removed
- Removing and reinstalling the charging corona unit
- Removing and reinstalling the charge control plate
- Replacing the charging wires
- Removing and reinstalling the charging wire cleaning unit
- Removing and reinstalling the PCL
- Cleaning the charging corona unit/PCL
- Removing and reinstalling the transfer/separation corona unit
- Removing and reinstalling the plunger prevention plate
- Replacing the transfer/separation wires and transfer/separation wire cleaning block
- Removing and reinstalling the TSL unit
- Developing unit
- Toner supply unit
- Cleaning/toner recycle unit
- Paper feed units of Trays2 and3
- Removing and reinstalling the paper feed unit
- Removing and reinstalling the paper feed Trays2 and3
- Removing and reinstalling the paper pick roller and pick roller rubber
- Removing and reinstalling the separation roller rubber
- Replacing the pre-registration and feed clutches (MCs)
- Replacing the wires
- Wire lengths
- Installing wires
- Paper feed unit of Tray3
- Removing and reinstalling the paper feed unit
- Removing and reinstalling paper feed Tray 3
- Removing and reinstalling the paper pick roller and pick roller rubber
- Removing and reinstalling the separation roller rubber
- Replacing the pre-registration and feed clutches (MCs)
- Replacing the wires
- Wire lengths
- Installing wires
- Tray1
- Vertical conveyance section
- ADF unit
- Pulling out and reinstalling the ADU stand
- Cleaning the paper mis-centering PS (PS70)/leading edge PS (PS43)
- Removing and reinstalling the registration MC (MC1)
- Removing and reinstalling the second paper feed unit (registration assembly)
- Cleaning the registration PS (PS44)
- Removing and reinstalling the registration roller
- Removing and reinstalling the pre-transfer roller
- Cleaning the automatic document feeder paper reverse PS (PS45)/ Reverse/Exit PS (PS46)
- Removing and reinstalling the ADF reverse roller
- Removing and reinstalling the ADU stand
- Removing and reinstalling the pre-registration roller
- Removing and reinstalling the ADU conveyance roller3 and4
- Removing and reinstalling the ADU conveyance roller1 and2
- Removing and reinstalling the paper reverse/exit roller
- Fuser
- Removing and reinstalling the fuser
- Removing and reinstalling the fuser (top)
- Removing and reinstalling the web cover
- Removing and reinstalling the cleaning web
- Replacing the fusing heater lamps (L2, L3)
- Replacing the fusing heater lamp (L4)
- Removing and reinstalling the fusing separation claw (upper) unit and fusing separation claws (up...
- Removing and reinstalling the fusing separation claw (lower) unit and fusing separation claws (lo...
- Removing and reinstalling the fusing upper roller
- Removing and reinstalling the fusing lower roller
- Removing and reinstalling the decurler roller
- Removing and reinstalling the fusing temperature sensors1 and2
- Removing and reinstalling the thermostat/U (TS1)
- Removing and reinstalling the thermostat/L (TS2)
- Product comparison
- Environmental Product Stewardship Program
- Terminology cross-reference
- Index
- automatic document feeder (Q3644A)
- 4000-sheet high capacity input (A4/Letter - Q3637A) (A3/Ledger - Q3638A)
- Contents
- HCI overview
- HCI unit explanation
- HCI disassembly/assembly
- Explanation
- Paper feed section
- Cleaning the paper dust removing brush
- Cleaning the HCI feed PS (PS106)/HCI first paper feed PS (PS107)
- Removing and reinstalling the pick roller unit
- Replacing the pick roller rubber/feed roller rubber
- Replacing the separation roller rubber
- Replacing the HCI feed MC (MC101)/HCI first paper feed MC (MC102)
- Replacing the Q3637A up/down wires
- Replacing the Q3638A up/down wires
- Index
- stapler/stacker (Q3633A) multifunction finisher (Q3634A)
- Contents
- Finisher overview
- Finisher unit explanation
- Finisher disassembly/assembly
- External section
- Removing and reinstalling the booklet tray (Q3634A only)
- Removing and reinstalling the top cover/1
- Removing and reinstalling the top cover/2
- Removing and reinstalling the side cover
- Removing and reinstalling the front door
- Removing and reinstalling the rear cover
- Removing and reinstalling the main tray
- Removing and reinstalling the main paper exit opening cover
- Removing and reinstalling the booklet paper exit opening cover (Q3634A only)
- Conveyance section
- Main tray section
- Stacker section
- Stapler section
- External section
- Index
- post insertion kit (Q3636A)
- punch kit (Q3689A, Q3635A, Q3690A, Q3691A)
iv ENWW
M14 (charger cleaning) control . . . . . . . . . 60
M10 (transfer/separation cleaning)
control . . . . . . . . . . . . . . . . . . . . . . . . 61
PCL/TSL control . . . . . . . . . . . . . . . . . . . . 62
Developing unit . . . . . . . . . . . . . . . . . . . . . . . . . 63
Composition . . . . . . . . . . . . . . . . . . . . . . .63
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .63
M3 (developing) control. . . . . . . . . . . . . . . 63
Developing bias control. . . . . . . . . . . . . . . 64
Dmax (maximum contrast) control . . . . . . 65
Gradation correction control . . . . . . . . . . . 67
Dot diameter correction control . . . . . . . . . 68
Toner density control. . . . . . . . . . . . . . . . . 69
FM4 (developing suction) control . . . . . . . 69
Toner supply unit. . . . . . . . . . . . . . . . . . . . . . . . 70
Composition . . . . . . . . . . . . . . . . . . . . . . .70
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .70
Toner level detection control. . . . . . . . . . . 71
M12 (toner supply) control . . . . . . . . . . . . 72
Cleaning/toner recycle unit . . . . . . . . . . . . . . . . 73
Composition . . . . . . . . . . . . . . . . . . . . . . .73
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .73
Toner guide roller (TGR) control . . . . . . . . 74
Other control . . . . . . . . . . . . . . . . . . . . . . . 74
Tray 2/3 paper feed unit . . . . . . . . . . . . . . . . . . 75
Composition . . . . . . . . . . . . . . . . . . . . . . .75
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .75
First paper feed control . . . . . . . . . . . . . . . 77
Paper up drive control. . . . . . . . . . . . . . . . 79
Paper size detection control . . . . . . . . . . . 80
No paper detection control . . . . . . . . . . . . 81
Tray 4 paper feed unit . . . . . . . . . . . . . . . . . . . . 82
Composition . . . . . . . . . . . . . . . . . . . . . . .82
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .82
First paper feed control . . . . . . . . . . . . . . . 84
Paper up drive control. . . . . . . . . . . . . . . . 86
Paper size detection control . . . . . . . . . . . 87
No paper detection control . . . . . . . . . . . . 87
Tray 1 (bypass tray) . . . . . . . . . . . . . . . . . . . . . 89
Composition . . . . . . . . . . . . . . . . . . . . . . .89
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .89
First paper feed control . . . . . . . . . . . . . . . 90
Paper up/down control . . . . . . . . . . . . . . . 90
Paper size detection control . . . . . . . . . . . 91
No paper detection control . . . . . . . . . . . . 92
Vertical conveyance section . . . . . . . . . . . . . . . 93
Composition . . . . . . . . . . . . . . . . . . . . . . .93
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .93
Vertical conveyance control . . . . . . . . . . . 93
Automatic duplex unit (ADU). . . . . . . . . . . . . . . 95
Composition . . . . . . . . . . . . . . . . . . . . . . .95
Mechanisms . . . . . . . . . . . . . . . . . . . . . . .96
Loop/second paper feed control . . . . . . . 101
Paper conveyance control. . . . . . . . . . . . 103
Paper reverse and exit control . . . . . . . . 104
ADF paper conveyance/feed control . . . 108
Fuser unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Composition . . . . . . . . . . . . . . . . . . . . . . 111
Mechanisms . . . . . . . . . . . . . . . . . . . . . . 111
M16 (web drive) control . . . . . . . . . . . . . 113
Fuser temperature control . . . . . . . . . . . 114
Other kinds of control . . . . . . . . . . . . . . . . . . . 116
Parts energized when SW1 (main
power) is off . . . . . . . . . . . . . . . . . . 116
Parts that operate when SW1 (main
power)/SW2 (secondary power)
is on . . . . . . . . . . . . . . . . . . . . . . . . 117
Cooling fan control . . . . . . . . . . . . . . . . . 118
Control panel control. . . . . . . . . . . . . . . . 122
Counter control . . . . . . . . . . . . . . . . . . . . 124
Option control . . . . . . . . . . . . . . . . . . . . . 126
5 MFP disassembly/assembly
External section . . . . . . . . . . . . . . . . . . . . . . . 132
Replacing the ozone filter . . . . . . . . . . . . 132
Replacing the developing suction filter . . 133
Removing and reinstalling the
external covers . . . . . . . . . . . . . . . . 133
Changing the control panel
attachment angle and
removing/reinstalling. . . . . . . . . . . . 136
Resetting the circuit breaker . . . . . . . . . . 137
Drive section . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Removing and reinstalling the drum
motor (M2) . . . . . . . . . . . . . . . . . . . 138
Removing and reinstalling the fusing
input gear . . . . . . . . . . . . . . . . . . . . 140
Scanner section . . . . . . . . . . . . . . . . . . . . . . . 141
Screws that must not be removed . . . . . 141
Removing and reinstalling the CCD
unit . . . . . . . . . . . . . . . . . . . . . . . . . 141
Replacing the exposure lamp . . . . . . . . . 142
Removing and reinstalling the
exposure unit . . . . . . . . . . . . . . . . . 143
Installing the optics wire . . . . . . . . . . . . . 145
Cleaning the ADF glass and scanner
glass . . . . . . . . . . . . . . . . . . . . . . . . 147
Replacing the scanner motor (M11) . . . 148
Laser scanner unit . . . . . . . . . . . . . . . . . . . . . 150
Removing and reinstalling the laser/
scanner assembly. . . . . . . . . . . . . . 150
Cleaning the dust-proof glass. . . . . . . . . 151
Drum unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Removing and reinstalling the drum
unit . . . . . . . . . . . . . . . . . . . . . . . . . 152
Installing the coupling . . . . . . . . . . . . . . . 154










