Horizontal Conveyance Control (Tray 1) - Konica Minolta 7155 Service Manual

TRAY 1/2 PAPER FEED UNIT (7255/7272)

[4] Horizontal Conveyance Control (Tray 1)

PS5
PS6
MC15
MC16
M1
MS1
MS2
The horizontal conveyance from Tray 1 is con-
ducted by transmitting the drive force of M1
(paper feed) to the horizontal conveyance roller
/L and horizontal conveyance roller /R via MC15
(horizontal conveyance MC/L) and MC16 (hori-
zontal conveyance MC/R).
The above operations are controlled by PRCB
(printer control board). Related signals are PS1
(feed /1), PS5 (horizontal conveyance /L) and
PS6 (horizontal conveyance /R).
1. Operation
a. Operation of MC15 (horizontal conveyance
MC/L)
(1) ON timing for the first paper
4
When the restart of MC3 (feed MC/1) is turned
ON.
(2) ON timing for the second paper
After a specified time when MC1 (registration
MC) is turned ON.
MODEL
7155/7165/7255/7272
5V3
HFPS_L
S.GND
5V3
HFPS_R
S.GND IO DTXD
IO DCLK
ADU LATCH
24V3
IO UCLK
REQ1
HFMC_L
IO URXD
ACK1
24V3
ERR OUT1
2NDM CLK
HFMC_R
REG PS
FEEDM_CONT
FEEDM_CLK
FEEDM_F/E
FEEDM_EM
5V
P.GND
PRCB
P.GND
24V1
24V2
S.GND
24V1
S.GND
P.GND
-5V1
DCPS
MANUAL REVISED EDITION
SERVICE MANUAL
MC24V
2ND MC
2ND PS
S.GND
5V2
5V2
ADUDB
(3) OFF timing
After a specified time when PS44 (registration) is
turned ON.
b. Operation of MC16 (horizontal conveyance
MC/R)
(1) ON timing for the first paper
After a specified time when PS6 (horizontal con-
veyance /R) is turned ON.
(2) ON timing for the second paper
After a specified time when MC1 (registration
MC) is turned ON.
(3) OFF timing
After a specified time when PS6 (horizontal con-
veyance /R) is turned ON.
DATE
2-J-12
Dec. 2003
4
MC1
5V2
PS44
7272ma2008
PAGE METHOD
2-J-12 ADDITION