15
Optional
Memory Board ................................................................................... 131
16
Important
17
Troubleshooting .................................................................................. 141
Regular Maintenance ........................................................................ 158
For the Printer ............................................................................... 131
For the Fax .................................................................................... 131
Cution ............................................................................................... 137
For Your Safety ............................................................................. 137
Disconnect device ......................................................................... 138
Manufactured at ............................................................................ 138
IMPORTANT ............................................................................... 138
BABT Approval ................................................................................ 139
Error Messages ................................................................................. 141
Document Jam .................................................................................. 144
Printer Jam ........................................................................................ 144
Error ........................................................................................... 153
HP LaserJet 4 Plus: ....................................................................... 154
T A B L E O F C O N T E N T S
vii