2A3/4
1-3-21
Print key
SM
Fwd. rotation
Rev. rotation
SHPSW
FVSYNC signal
AB
410 P
414 P
9921 P
110 P
CD
Manual copy density control, copy paper: A3/11" × 17", magnification ratio 100%
Timing chart 1-3-4 Scanner operation
A When the print key is pressed, the scanner motor (SM) reverses for 410 pulses and
then rotates forward.
B 414 pulses after the scanner motor rotates forward, the FVSYNC signal turns on for
9921 pulses for scanning.
C The scanner motor (SM) reverses to return the scanner to the home position.
D 110 pulses after the scanner home position switch (SHPSW) turns on, the scanner
motor (SM) turns off, and the scanner stops at its home position.
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