Oki C301 Maintenance Manual

44951501TH Rev.2
v /
Oki Data CONFIDENTIAL
CONTENTS
5. MAINTENANCE MENUS ........................................................5-1
5.1 System Maintenance menu (for maintenance personnel) ...................................5-2
5.2 Maintenance Utility ..............................................................................................5-4
5.3 User maintenance menu functions .....................................................................5-6
5.3.1 Maintenance menu (for end-users) ...............................................................5-6
5.3.2 Self-diagnostic mode ....................................................................................5-7
5.3.3 Various types of printing on stand-alone basis ...........................................5-24
5.3.4 Button functions at power-on ......................................................................5-25
5.4 Setup after part replacement ............................................................................5-26
5.4.1 Notes on CU/PU board replacement ..........................................................5-26
5.5Manualdensityadjustmentoperation ...............................................................5-28
5.6 Printer ADMIN MENU .......................................................................................5-29
6. PERIODIC MAINTENANCE ...................................................6-1
6.1 Cleaning .............................................................................................................. 6-2
6.2 LED lens array cleaning ......................................................................................6-3
6.3 Pick-up roller cleaning ......................................................................................... 6-5
6.4 Pinter internal cleaning .......................................................................................6-6
7.TROUBLESHOOTING .............................................................7-1
7.1 Before troubleshooting ........................................................................................7-2
7.2 Points to check before dealing with image troubles ............................................7-2
7.3 Precautions for dealing with image troubles .......................................................7-2
7.4 Preparation for troubleshooting ........................................................................... 7-2
7.5 Troubleshooting procedure ..................................................................................7-3
7.5.1 LCD messages list ........................................................................................7-3
7.5.2 Preparation for troubleshooting ..................................................................7-24
7.5.3 Troubleshooting of image problems ...........................................................7-57
7.5.4 Network troubleshooting ............................................................................7-64
7.5.4.1 ConnectionerrorsoccurbyuseofaWebbrowser
(for C321/C331/C531) ....................................................................7-64
7.5.4.1.1 Has a certificate been created? ...................................................7-65
7.5.4.1.2 Is the SSL/TLS setting set to ON? ...............................................7-65
7.5.4.1.3ChecktheversionnumberoftheWebbrowser. ..........................7-66
7.5.4.2 Print operation is not possible (for C321/C331/C531) ........................ 7-67
7.5.4.2.1 Check the OS (Operating System). .............................................7-67
7.5.4.2.2 Has a printer been created? ........................................................ 7-67
7.5.4.2.3 Is the IPP setting set to Enable? .................................................7-67
7.5.4.3 A certificate cannot be created. (for C321/C331/C531) ......................7-67
7.5.4.3.1 Not all the required entry fields are filled in. ................................7-67
7.5.4.3.2 The printer is printing. ..................................................................7-68
7.5.4.4 A certificate cannot be installed. (for C321/C331/C531) .................7-68
7.5.4.4.1 The printer IP address has been changed. .................................7-68
7.5.4.4.2 The network card has been initialized. ........................................7-68
7.5.4.4.3 A CSR has been deleted. ............................................................7-68
7.5.4.4.4 Install an intermediate Certificate. ..............................................7-69
7.5.4.5 Other questions (for C321/C331/C531) .............................................7-70
7.5.4.5.1 Time required for creation of a certificate ....................................7-70
7.5.4.5.2 Communication time when the encryption function is enabled ....7-70
7.5.4.5.3 Can encrypted printing be performed without IPP? .....................7-70
7.5.4.5.4Whatwill happen if SSL/TLS is set to OFF after a certificate is
created (or installed)? ..................................................................7-70
7.5.4.5.5 How to change the port number ..................................................7-70
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. .....................................................................................7-70
7.5.4.5.7 The error message “Name of security certificate is invalid or does
not match the site name” is displayed. ......................................... 7-71
7.5.4.6 Restrictions when using Internet Explore 7 (for C321/C331/C531) .7-72
7.5.4.6.1WarningindicationwhenSSLisenabledforself-signed
certificates ...................................................................................7-72
7.6 Fuse check ........................................................................................................ 7-73
8. CONNECTION DIAGRAMS ..................................................8-1
8.1 Resistance value checking .................................................................................8-2
8.2 Layout of parts ...................................................................................................8-5
8.3 Firmware revision numbers .............................................................................. 8-19
8.3.1 ROM control numbers.................................................................................8-19
8.3.2 Checking and indication of the revision number ........................................8-20
8.3.3 Stamp of maintenance board indication ....................................................8-20

Oki C301 Specifications

General

Print Speed (Color)	20 ppm
Monthly Duty Cycle	30, 000 pages
Memory	128 MB
Paper Capacity	250 sheets
Duplex Printing	Manual
Print Technology	LED
Connectivity	USB 2.0, Ethernet
Printer Type	Color
Media Size	A4, A5, A6, B5, Legal, Letter, Executive, Envelopes
Operating System Compatibility	Windows, Mac