Minolta Di551 Service Manual page 83

TRAY 1/2 PAPER FEED UNIT
2. Signals
a. PRCB input signals
(1) T1PRE_PS (PS1 to PRCB)
Paper passage detection signal (tray 1)
[L]: Detected.
[H]: Not detected.
(2) T2PRE_PS (PS7 to PRCB)
Paper passage detection signal (tray 2)
[L]: Detected.
[H]: Not detected.
b. PRCB output signals
(1) T1FEED_DRV (PRCB to MC3)
MC3 drive control signal (tray 1)
[L]: MC3 ON
[H]: MC3 OFF
(2) T1PREMC_DRV (PRCB to MC4)
MC4 drive control signal (tray 1)
[L]: MC4 ON
[H]: MC4 OFF
(3) T2FEED_DRV (PRCB to MC5)
MC5 drive control signal (tray 2)
[L]: MC5 ON
[H]: MC5 OFF
(4) T2PREMC_DRV (PRCB to MC6)
MC6 drive control signal (tray 2)
[L]: MC6 ON
[H]: MC6 OFF
2-J-4