Konica Minolta 7085/FORCE 85 Service Manual page 68

READ SECTION
g. Platen copy operation
3
For 7075
Scanner HP
PS5
AE scan
Original area judgment
Home position search
For 7085
ADF Scanner
brake HP
PS7 PS5
Second white correction
First white correction
AE scan
Original area judgment
Home position search
2. Signals
a. PRCB input signals
(1) PS4 (PS4 to SCDB to PRCB: 7075 only)
3
Scanner reverse detection signal.
In the platen mode, the return position of the
exposure unit is detected on the original's leading
edge side.
[L]: The exposure unit is detected.
[H]: The exposure unit is not detected.
(2) PS5 (PS5 to SCDB to PRCB)
Scanner home position detection signal.
The reference position for the home position of
the exposure unit is detected.
[L]: The exposure unit is detected.
[H]: The exposure unit is not detected.
MODEL
7075/7085
SERVICE HANDBOOK
Scanner
return
Original HP
PS6 PS4
Exposure scan
Scanner
return
Original HP
PS6
Exposure scan
MANUAL REVISED EDITION
(3) PS6 (PS6 to SCDB to PRCB)
Original home position detection signal.
In the platen mode, the reference position for the
original's leading edge is detected.
[L]: The exposure unit is detected.
[H]: The exposure unit is not detected.
(4) PS7 (PS7 to SCDB to PRCB)
ADF brake detection signal.
In the DF mode, the exposure reference position
is detected.
[L]: The exposure unit is detected.
[H]: The exposure unit is not detected.
b. PRCB output signals
(1) M13 CLK (PRCB to SCDB)
Clock signal for M13
(2) M13 F/R (PRCB to SCDB)
M13 rotational direction switchover signal.
[L]: The exposure unit is moved toward the
paper exit side.
[H]: The exposure unit is moved toward the
paper feed side.
(3) M13 CSEL (PRCB to SCDB)
3
M13 excitation switchover signal.
[L]: 2-/3-phase excitation
[H]: 2-phase excitation (7075)
W2-/3-phase excitation (7085)
(4) M13 V0 to V2 (PRCB to SCDB)
M13 excitation current switchover signal.
c. SCDB output signals
(1) M13 DRIVE, U, V, W (SCDB to M13)
M13 drive control signals.
These signals are used to control rotation of M13.
By supplying and stopping clock pulses, the motor
is turned ON/OFF and the rotational direction is
switched.
DATE
2 - C - 4
Jan. 2002
3
PAGE METHOD
2-C-3-1 ADDITION