HP 2420 Service Manual - Page 155

Troubleshooting, contents - cold reset

Page 155 highlights

7 Troubleshooting Chapter contents Chapter contents...141 Troubleshooting tree...143 Troubleshooting flowchart ...144 1. Does the control-panel display show READY 144 2. Can you print a configuration page 145 3. Can you print from a program 146 4. Does the job print as expected 147 5. Does the printer select the correct trays 148 Troubleshooting tools ...149 Information pages ...149 Embedded Web server 154 Gaining access to the embedded Web server 154 Printer Status and Alerts software 156 Control-panel menus ...158 Using control-panel menus 158 Resets submenu ...159 Diagnostics menu ...159 Service menu (service PIN codes 161 Printer resets and power-on modes 163 Cold reset ...163 NVRAM initialization ...164 Hard-disk initialization ...164 Power-on bypass ...165 Save + Restore...165 Test pages ...166 Engine-test page ...166 Formatter test page ...166 Interface troubleshooting ...167 Communications checks 167 EIO troubleshooting ...167 Solving general printing problems 169 Clearing jams ...173 Avoiding jams ...173 Typical jam locations ...174 Media handling problems ...181 Multiple pages feed ...181 Pages are wrinkled or folded 182 Pages are skewed ...182 Understanding printer messages 183 Using the printer online Help system 183 Resolving persistent messages 183 ENWW Chapter contents 141

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7
Troubleshooting
Chapter contents
Chapter contents
....................................................................................................................
141
Troubleshooting tree
..............................................................................................................
143
Troubleshooting flowchart
.....................................................................................................
144
1. Does the control-panel display show READY?
...........................................................
144
2. Can you print a configuration page?
..........................................................................
145
3. Can you print from a program?
..................................................................................
146
4. Does the job print as expected?
..................................................................................
147
5. Does the printer select the correct trays?
...................................................................
148
Troubleshooting tools
............................................................................................................
149
Information pages
...........................................................................................................
149
Embedded Web server
...................................................................................................
154
Gaining access to the embedded Web server
...............................................................
154
Printer Status and Alerts software
..................................................................................
156
Control-panel menus
.............................................................................................................
158
Using control-panel menus
.............................................................................................
158
Resets submenu
.............................................................................................................
159
Diagnostics menu
...........................................................................................................
159
Service menu (service PIN codes)
.................................................................................
161
Printer resets and power-on modes
......................................................................................
163
Cold reset
.......................................................................................................................
163
NVRAM initialization
.......................................................................................................
164
Hard-disk initialization
.....................................................................................................
164
Power-on bypass
............................................................................................................
165
Save + Restore
................................................................................................................
165
Test pages
.............................................................................................................................
166
Engine-test page
............................................................................................................
166
Formatter test page
........................................................................................................
166
Interface troubleshooting
......................................................................................................
167
Communications checks
.................................................................................................
167
EIO troubleshooting
........................................................................................................
167
Solving general printing problems
.........................................................................................
169
Clearing jams
........................................................................................................................
173
Avoiding jams
.................................................................................................................
173
Typical jam locations
......................................................................................................
174
Media handling problems
......................................................................................................
181
Multiple pages feed
........................................................................................................
181
Pages are wrinkled or folded
..........................................................................................
182
Pages are skewed
..........................................................................................................
182
Understanding printer messages
..........................................................................................
183
Using the printer online Help system
..............................................................................
183
Resolving persistent messages
......................................................................................
183
ENWW
Chapter contents
141