Oki MB280 Service Manual

PRINTER 3000 304 995 - 01
i
PRINTER MODEL-L1
           （
G191
）
SERVICE MANUAL
TECHNICAL DOCUMENT
6 September 2005
エラー
!
スタイルが定義されていません。
1-5
Detailed
Descriptions
Block Diagram
The Engine Board controls the laser diode power (APCSH) and transfers data for
printing to the laser diode (VIDEO). As an electrical safety feature, there is an
interlock switch on the Engine Board. This switch cuts +24 volts whenever the front
door is opened.
Error Conditions
Laser Error
The machine detects laser synchronization signal pulses (PGSYCI) 70 milliseconds
after the (LDENA) signal is sent. It detects a laser error if the pulse count does not
reach the specified number within 400 milliseconds.
When this occurs, the machine warns the customer on the LCD panel (Error 56).
Polygon Mirror Motor Error
The machine detects a polygon mirror motor error when the (PMLOK) signal does
not go low within 3.5 seconds of the (PMENA) signal. When this occurs, the
machine warns the customer on the LCD panel (Error 57).
Laser Diode Unit
Laser Diode
Driver
Laser Diode
Laser
Synchronization
Detector
Polygon Mirror
Motor Unit
Polygon Mirror
Motor Driver
Regulator
Engine Board
Power
Supply
Unit
+5V
VIDEO
LDENA
APCSH
PGSYCI
+24VD
PMENA
PMCLK
PMLOK
+24V
Interlock Switch
G182D012.WMF

Oki MB280 Specifications

General

Brand	Oki
Model	MB280
Category	All in One Printer
Language	English