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Oki B721 Maintenance Manual

Oki B721
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Oki Data CONFIDENTIAL
45487001TH Rev.1
6-2 /
6. Troubleshooting procedure
6.1 Important notes to start the repair work
6.2 Matters to be checked before taking corrective actions against abnormalities
6.3 Precautions when taking corrective actions against abnormalities
6.4 Preparation for troubleshooting
(1) Error status of this printer is displayed on the LCD (Liquid crystal display) screen of
the operator panel.
Take appropriate troubleshooting actions by following the message displayed on the
LCD screen.
(1) Do not touch the OPC drum surface with your hand and do not allow any foreign
materials to touch it.
(2) Do not expose the OPC drum to the direct sunlight.
(3) The fuser unit is extremely hot. Do not touch.
(4) Do not expose image drums to any light for 5 minutes or longer at room
temperature.
(1) The operation environment of the printer is appropriate.
(2) Consumable items (toner cartridges and image drums) have been replaced
properly.
(3) Print media (paper) has no problem. Refer to paper specifications in User’s Manual.
(4) The image drums are installed correctly.
(1) Read the basic check/inspection points described in User’s Manual.
(2) Get information from customers in detail as much as possible about problem
occurrence conditions.
(3) Carry out checking under the conditions that are similar to those at occurrence of
the problem.

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Oki B721 Specifications

General IconGeneral
Print TechnologyLED
Resolution1200 x 1200 dpi
Processor533 MHz
Memory256 MB
ConnectivityUSB, Ethernet
Duplex PrintingStandard

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