Toshiba MD-0101 manual Meaning of Signals, Adufl

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5.2 Meaning of Signals

Signal name

Part name

Functional description

Status

Note

 

 

 

 

 

ADUFL

ADU paper jam

Detects the transport of

High: Paper present

Photo sensor

 

sensor (Lower)

paper (Lower)

 

 

 

 

 

 

 

ADUFU

ADU paper jam

Detects the transport of

High: Paper present

Photo sensor

 

sensor (Upper)

paper (Upper)

 

 

 

 

 

 

 

ADUCOVSW

ADU cover

Detection of cover

High: Open

Push switch

 

open switch

open/close status during

 

 

 

 

jam processing, etc.

 

 

 

 

 

 

 

EXMA-D

ADU motor

Drives the roller to transport

-

PM type

 

(Upper)

paper (Upper)

 

pulse motor

 

 

 

 

 

FDMA-D

ADU motor

Drives the roller to transport

-

PM type

 

(Lower)

paper (Lower)

 

pulse motor

 

 

 

 

 

The ADU cover open switch is a switch which detects the open or close state of the cover. A push switch is used for the switch. The signal goes LOW when the cover is closed, and HIGH when it is open.

The ADU paper jam sensor (upper/lower) detects the presence or absence of paper in the transfer path. Photo sensors are used for the sensors. When paper passes, the sensor arm in the transfer path is pressed to turn on the sensor.

The ADU motor (lower) and ADU motor (upper) are 2-phase excitation PM type pulse motors (stepping motors) and operate according to the drive signals from the driver IC’s (IC1, IC2).

MD-0101 CIRCUIT DESCRIPTION

5 - 2

October 2000 © TOSHIBA TEC

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Contents Toshiba TEC Corporation Contents Specifications Outline Names of Various ComponentsLayout of Electrical Parts ADU PWAHarness Connection Diagram ADU PWABoard Assembly PF-WPGeneral Operation Block DiagramOperational Description Paper jam detection Detection of Abnormal StatusCover open/close detection Flow Chart Flow of Paper Mechanical DescriptionPaper Feed System Drive System PWA Block Diagram Circuit DescriptionMeaning of Signals AduflTiming Assembly Disassembly and ReplacementADU paper guide assembly ADU hinge cover F/RADU ADU cover ADU PWA ADU motorADU feed roller shaft upper/clutch 08S018-06CL ADU feed roller shaft middle ADU feed roller shaft lower/clutch 08S018-06CL Remove timing belt. See Fig