6.3.2 Scanning drive circuit

The scan motor is a 2-phase stepping motor and driven by the driver IC (IC16).

 

 

 

 

 

 

 

 

 

+24V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MOTREF

 

Voltage to set value for

 

 

 

 

 

 

 

 

 

 

 

 

motor current

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Clock nput

 

 

 

 

 

 

 

 

 

 

MOTCLK

 

Scanner

 

MOTMD3

 

Exctaton mode settng (3)

CPU

 

MOTMD2

 

Exctaton mode settng (2)

 

 

 

 

 

 

 

MOTMD

 

Exctaton mode settng ()

 

 

 

MOTDIR

 

Rotaton drecton settng

 

 

 

MOTEN

 

Cut off output

 

 

 

MOTRST

 

Reset

 

 

 

 

 

 

 

 

 

+5V

 

 

 

 

 

 

 

 

 

 

 

 

RESET IC

GND

+24V

B

DG

+24V

 

B

VREF

A

 

 

+24V

 

A

CLK

M3

M2

M

CWB

EN

RESET

+5V

GND

M

Scan motor

6

SLG board

Fig. 6-302

© 2003 - 2008 TOSHIBA TEC CORPORATION All rights reserved 6 -

e-STUDIO350/352/353/450/452/453

05/11

SCANNER

 

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Image 127
Toshiba 353, 452, 453, 350 service manual Scanning drive circuit

350, 353, 453, 452 specifications

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