Minolta Di551 Service Manual page 115

ADU
starts rotating at a low speed to even up the
edges of paper in the exit tray. When PS37
(paper exit) is turned OFF at detection of the trail-
ing edge of paper, M7 starts rotating at a high
speed again, proceeding to eject the next sheet
of paper. When PS37 detects the trailing edge of
the last sheet of paper, M7 (paper exit) stops. If
FNS is provided, M7 is always rotating at a high
speed.
2. Signals
a. Input signals
(1) FIXEXIT_PS (PS30 to PRCB)
Detection signal of paper passage at fixing unit
exit
[L]: Detected.
[H]: Not detected.
(2) DECUR_PS (PS42 to ADUDB)
Reverse/exit gate open/close detection signal
[L]: Gate is open.
[H]: Gate is closed.
(3) ADU_REV (PS45 to ADUDB)
ADU reverse section paper passage detection
signal
[L]: Detected.
[H]: Not detected.
(4) REV_PS (PS46 to ADUDB)
ADU gate open/close detection signal
[L]: Gate is open.
[H]: Gate is closed.
b. Output signals
(1) GATE_DR (ADUDB to SD7)
SD7 (reverse gate) ON/OFF drive signal
[L]: SD7 ON
[H]: SD7 OFF
(2) A, /A (PRCB to M7)
M7 (paper exit) A-phase drive control pulse sig-
nal
(3) B, /B (PRCB to M7)
M7 (paper exit) B-phase drive control pulse sig-
nal
(4) A, /A (ADUDB to M8)
M8 (reverse/exit) A-phase drive control pulse
signal
(5) B, /B (ADUDB to M8)
M8 (reverse/exit) B-phase drive control pulse
signal
2-N-12