Minolta Di551 Service Manual page 91

TRAY 3 PAPER FEED UNIT
2. Signals
a. PRCB input signals
(1) T3PREM_PS (PS13 to PRCB)
Paper passage detection signal (tray 3)
[L]: Detected.
[H]: Not detected.
b. PRCB output signals
(1) T3FEED_DRV (PRCB to MC7)
MC7 drive control signal (tray 3)
[L]: MC7 ON
[H]: MC7 OFF
(2) T3PREM_PS (PRCB to MC8)
MC8 drive control signal (tray 3)
[L]: MC8 ON
[H]: MC8 OFF
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