Oki B721 Maintenance Manual

Oki Data CONFIDENTIAL
45487001TH Rev.1
6-18 /
6. Troubleshooting procedure
LCD Status
Message
READY
indicator
ATTEN-
TION
indicator
Beep Details
Error
code
Non Genuine Print
Cartridge
Please see HELP
for details
Off Blink On The signature ID of Print Cartridge
can not be recognized (Unauthorized
third party).
As probable missing to measure the
amount of toner, the printer notifies
error status and stop printing.
Error 553 : Black
The engine is confirmed again by
cover open/close.
And, when the toner cartridges have
not been exchanged, it shifts to
Warning.
And, it is possible to print up to 20.
Error
553
Toner Not Installed
Please see HELP
for details
Off Blink On The toner cartridge is not installed.
Error 613 : Black
The engine is confirmed again by cover
open/close.
And, when the toner cartridges have
not been exchanged, it shifts to Warning.
And, it is possible to print up to 20.
Error
613
Print Cartridge Not
Installed
Please see HELP
for details
Off Blink On The Print Cartridge is not installed.
Error 613 : Black
The engine is confirmed again by cover
open/close.
And, when the toner cartridges have
not been exchanged, it shifts to Warning.
And, it is possible to print up to 20.
Error
613
Incompatible Image
Drum
Please see HELP
for details
Off Blink On The image drum unit is not proper to
the distribution channel (OKI channel
mismatch).
Error 693 : Black
Error
693
Incompatible Print
Cartridge
Please see HELP
for details
Off Blink On The Print Cartridge(image drum uni)
t is not proper to the distribution
channel (OKI channel mismatch).
Error 693 : Black
Error
693
LCD Status
Message
READY
indicator
ATTEN-
TION
indicator
Beep Details
Error
code
Incompatible Image
Drum
Please see HELP
for details
Off Blink On The image drum unit is not proper to
the distribution channel (OEM channel
mismatch).
Error 703 : Black
Error
703
Incompatible Print
Cartridge
Please see HELP
for details
Off Blink On The Print Cartridge(image drum
unit) is not proper to the distribution
channel (OEM channel mismatch).
Error 703 : Black
Error
703
Incompatible Image
Drum
Please see HELP
for details
Off Blink On The image drum unit is not proper to
the distribution channel, and the group
ID is protected (OEM mismatch).
Error 707 : Black
Error
707
Incompatible Print
Cartridge
Please see HELP
for details
Off Blink On The Print Cartridge(image drum
unit) is not proper to the distribution
channel, and the group ID is protected
(OEM mismatch).
Error 707 : Black
Error
707
Non Genuine
Image Drum
Please see HELP
for details
Off Blink On The image drum unit can not be
recognized (Unauthorized third party).
Error 687 : Black
Error
687

Oki B721 Specifications

General

Print Technology	LED
Resolution	1200 x 1200 dpi
Processor	533 MHz
Memory	256 MB
Connectivity	USB, Ethernet
Duplex Printing	Standard