Canon PIXMA MG3220 series Service Manual Page 151
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Service-mode functions
NVRAM initialization
An NVRAM initialization returns the device settings to the factory-set defaults.
1. Turn off the product.
2. Press and hold both the Start Copy button and the Cancel button, and then turn on the product.
3. Wait until the message Permanent storage init. appears, and then release the buttons.
When the NVRAM initialization process finishes, the product control panel shows the Ready message.
Super NVRAM initialization
The super NVRAM initialization clears all settings affected by a regular NVRAM initialization, and also
clears the product language and country/region settings. Both settings must be reset after a super
NVRAM initialization.
1. Turn off the product.
2. Press and hold both the right arrow button and the Cancel button, and then turn on the product.
3. Wait until the message Permanent storage init. appears, and then release the buttons.
When the process finishes, the product control panel shows the Ready message.
Secondary service menu
Use this menu to perform various tests and print out special reports.
Open the secondary service menu
1. Press the Setup button.
2. Simultaneously press and then release both the left arrow button and the OK button.
3. Press the OK button.
4. Use the arrow buttons to select the desired secondary-service option, and then press the OK
button.
5. Use the arrow buttons to select the desired submenu option, and then press OK .
6. After making the necessary menu item choices, wait for the product to enter the Ready state, and
then press Cancel to close the secondary service menu.
Menu item Submenu Description
Service Reports Cont. Self-Test The continuous self-test prints the configuration page
repeatedly until you press Cancel.
Cont. Copy Run a continuous copy test to test the copy function.
Extended Keymap Print the extended keypad map to see all the characters
associated with the alphanumeric keys.
Error Report Print the error report to see firmware errors.
ENWW Service-mode functions 135
- HP LaserJet M1120 MFP Series 1
- Table of contents 5
- List of tables 11
- List of figures 13
- 1 Product information 17
- Table 1-1 Product guides 18
- Product comparison 19
- Product features 20
- Product walkaround 21
- Software description 23
- Advanced installation 24
- Macintosh software 24
- Software for Windows 25
- Software for Macintosh 26
- Uninstall software 27
- Media specifications 28
- 2 Installation 31
- Site preparations 32
- Minimum system requirements 33
- What was in the box 34
- Install input devices 35
- Install supplies 37
- 3 Maintenance 39
- Manage supplies 40
- Replace supplies 41
- HP policy on non-HP supplies 42
- HP fraud hotline 43
- Clean the product 44
- Clean the paper path 45
- Management tools 46
- Features 47
- 4 Operational theory 49
- Basic operation 50
- ENWW Basic operation 35 51
- Scanner functions 52
- Scanner operation 53
- 789101112 54
- Engine control system 55
- Laser/scanner system 57
- Pickup/feed/delivery system 58
- Image-formation system 59
- 5 Removal and replacement 63
- Introduction 64
- Before performing service 65
- After performing service 66
- Post-service tests 67
- Parts removal order 68
- ENWW Scanner assembly 53 69
- ENWW Scanner assembly 55 71
- Scanner lid 72
- ENWW Scanner assembly 57 73
- Control-panel assembly 74
- ENWW Scanner assembly 59 75
- Scanner assembly 76
- (callout 4) 78
- Product base 81
- Separation pad 82
- ENWW Product base 67 83
- ENWW Product base 69 85
- 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
- 5. Remove the front cover 96
- Formatter 97
- Power supply 98
- ENWW Product base 85 101
- Scanner support frame 102
- ENWW Product base 87 103
- Laser/scanner assembly 105
- ENWW Product base 91 107
- Main motor 109
- ENWW Product base 99 115
- Paper-pickup assembly 116
- ENWW Product base 101 117
- 6 Problem solve 121
- Problem-solving checklist 122
- Control-panel messages 124
- Critical error messages 125
- Clear jams 127
- Where to look for jams 128
- ENWW Clear jams 115 131
- Avoid repeated jams 133
- Print problems 134
- General print-quality issues 136
- ENWW Print problems 121 137
- ENWW Print problems 123 139
- Scan problems 140
- ENWW Scan problems 125 141
- Scan-quality problems 142
- Copy problems 143
- Media-handling problems 144
- ENWW Copy problems 129 145
- Performance problems 146
- Functional checks 147
- Perform other checks 148
- Heating element check 149
- High-voltage contacts check 149
- Service-mode functions 151
- Problem-solving tools 153
- Service menu 154
- Turn on archive print 155
- Problem-solving diagrams 156
- Interface ports 157
- Formatter connectors 158
- ECU connectors 159
- Solenoid and motor 160
- Figure 6-6 Rollers 161
- Figure 6-7 Sensors 162
- Major components 163
- PCAs (base unit) 164
- Circuit diagram 165
- Firmware updates 166
- Ordering information 168
- Supplies and hinge tool 168
- Whole-unit replacement 169
- 154 Chapter 7 Parts ENWW 170
- 156 Chapter 7 Parts ENWW 172
- Control-panel overlays 173
- 158 Chapter 7 Parts ENWW 174
- 160 Chapter 7 Parts ENWW 176
- 162 Chapter 7 Parts ENWW 178
- Types of screws 179
- Scanner assemblies 180
- ENWW Scanner assemblies 165 181
- Assemblies 182
- ENWW Assemblies 167 183
- 168 Chapter 7 Parts ENWW 184
- Internal components (1 of 3) 186
- 172 Chapter 7 Parts ENWW 188
- 174 Chapter 7 Parts ENWW 190
- Alphabetical parts list 192
- Numerical parts list 194
- ENWW Numerical parts list 179 195
- 180 Chapter 7 Parts ENWW 196
- A Service and support 197
- Customer support 200
- HP maintenance agreements 200
- B Specifications 201
- Power consumption 202
- Environmental specifications 203
- Acoustic emissions 203
- C Regulatory information 205
- FCC compliance 206
- Plastics 207
- HP LaserJet print supplies 207
- Non-US returns 208
- Declaration of conformity 210
- Safety statements 211
- Laser statement for Finland 212
- Substances table (China) 212
- 206 Index ENWW 222
- *CB537-90945* 224
- CB537-90945 224
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