44346001TH Rev.1
5 /
Oki Data CONFIDENTIAL
CONTENTS
5. MAINTENANCE MENUS ......................................................... 87
5.1 System Maintenance menu (for maintenance personnel) .................................... 88
5.2 Maintenance Utility ............................................................................................... 90
5.3 User maintenance menu functions ...................................................................... 92
5.3.1 Maintenance menu (for end-users) ................................................................ 92
5.3.2 Self-diagnostic mode ..................................................................................... 93
5.3.3 Various types of printing on stand-alone basis ............................................ 110
5.3.4 Button functions at power-on ....................................................................... 111
5.4 Setup after part replacement ............................................................................. 112
5.4.1 Notes on CU/PU board replacement ........................................................... 112
5.5 Manual density adjustment operation ................................................................ 114
5.6 Printer ADMIN MENU ........................................................................................ 115
6. PERIODIC MAINTENANCE .................................................. 118
6.1 Cleaning ............................................................................................................. 119
6.2 LED lens array cleaning ..................................................................................... 120
6.3 Pick-up roller cleaning ........................................................................................ 122
6.4 Pinter internal cleaning ...................................................................................... 123
7.TROUBLESHOOTING ............................................................ 125
7.1 Before troubleshooting ....................................................................................... 126
7.2 Points to check before dealing with image troubles ........................................... 126
7.3 Precautions for dealing with image troubles ...................................................... 126
7.4 Preparation for troubleshooting .......................................................................... 126
7.5 Troubleshooting procedure ................................................................................. 127
7.5.1 LCD messages list ....................................................................................... 127
7.5.2 Preparation for troubleshooting ................................................................... 148
7.5.3 Troubleshooting of image problems ............................................................ 180
7.5.4 Network troubleshooting ............................................................................. 187
7.5.4.1 Connection errors occur by use of a Web browser
(C330dn/C530dn only) .................................................................... 187
7.5.4.1.1 Has a certificate been created? .................................................... 188
7.5.4.1.2 Is the SSL/TLS setting set to ON? ................................................ 188
7.5.4.1.3 Check the version number of the Web browser. ........................... 189
7.5.4.1.4 Check the encryption strength of the printer. ................................ 190
7.5.4.2 Print operation is not possible (C330dn/C530dn only) ........................ 193
7.5.4.2.1 Check the OS (Operating System). .............................................. 193
7.5.4.2.2 Has a printer been created? ......................................................... 193
7.5.4.2.3 Is the IPP setting set to Enable? .................................................. 193
7.5.4.3 A certificate cannot be created. (C330dn/C530dn only) ...................... 194
7.5.4.3.1 Not all the required entry fields are filled in. ................................. 194
7.5.4.3.2 The printer is printing. ................................................................... 194
7.5.4.4 A certificate cannot be installed. (C330dn/C530dn only) ................. 194
7.5.4.4.1 The printer IP address has been changed. .................................. 194
7.5.4.4.2 The network card has been initialized. ......................................... 195
7.5.4.4.3 A CSR has been deleted. ............................................................. 195
7.5.4.4.4 Install an intermediate Certificate. ............................................... 195
7.5.4.5 Other questions (C330dn/C530dn only) .............................................. 196
7.5.4.5.1 Time required for creation of a certificate ..................................... 196
7.5.4.5.2 Communication time when the encryption function is enabled ..... 196
7.5.4.5.3 Can encrypted printing be performed without IPP? ...................... 196
7.5.4.5.4 What will happen if SSL/TLS is set to OFF after a certificate is
created (or installed)? ................................................................... 196
7.5.4.5.5 How to change the port number ................................................... 196
7.5.4.5.6 The error message “The security certificate was issued by a
company you have not chosen to trust. View the certificate to
determine whether you want to trust the certifying authority” is
displayed. ...................................................................................... 196
7.5.4.5.7 The error message “Name of security certificate is invalid or does
not match the site name” is displayed. .......................................... 197
7.5.4.6 Restrictions when using Internet Explore 7 (C330dn/C530dn only) . 198
7.5.4.6.1 Warning indication when SSL is enabled for self-signed
certificates .................................................................................... 198
7.6 Fuse check ......................................................................................................... 199
8. CONNECTION DIAGRAMS ................................................. 200
8.1 Resistance value checking ................................................................................ 201
8.2 Layout of parts .................................................................................................. 204
8.3 Firmware revision numbers ............................................................................... 218
8.3.1 ROM control numbers.................................................................................. 218
8.3.2 Checking and indication of the revision number ......................................... 219
8.3.3 Stamp of maintenance board indication ..................................................... 219