2BC/D
2-3-19
2-3-4 Scanner drive PCB
Scanner drive PCB
Main PCB
Switches
and
sensors
Stepping
motor
driver IC
SM Vref
SM M1
SM A
SM _A
SM B
SM _B
SM M2
Driver
INPCB
EL
SM
SM M3
SM M4
SM CLK
SM CWB
SM ENABLE
Figure 2-3-7 Scanner drive PCB block diagram
The scanner drive PCB (SDPCB) drives the scanner motor (SM), turns the exposure lamp (EL) on and off, and relays
signals from the scanner home position switch (SHPSW), the original size detection sensor 1 (OSDS1), the original size
detection sensor 2 (OSDS2*) and the original detection switch (ODSW).
The scanner motor (SM) is driven by turning the output for motor phase switch over on and off (SM A, SM _A, SM B, SM _B).
It is activated by the stepping motor driver IC processing the currently set reference signal (SM Vref), drive mode signals
(SM M1 to M3, SM CWB), phase switch over clock (SM CLK), and drive/stop signals (SM ENABLE) from the main PCB
(MPCB).
*: Inch model only.
Summary of Contents for Ri 4530 Copystar
Page 1: ...SERVICE MANUAL Published in Feb 02 2BC70941 Revision 1 Ri 4530 5530 ...
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