Olivetti DR N17 Service Manual page 245

18. MCU ↔ OCT STACK SENSOR, OCT HOME SENSOR, OCT EXIT SENSOR, OCT DIRECTION SOLENOID,
OCT MOTOR, AND OCT OFFSET MOTOR
Signal Name
/OCT PRES
FULLSTK SNR
(OCT)
/OCT HOME SNR
/OFFSET MOT ON
/OCT FORWARD
/OCT MOT ON
/DIRECT SOL
/OCT EXIT SNR
RXD M/B
TXD M/B
J202
P14(7)
P13(6)
P12(5)
P11(4)
P10(3)
P9(2)
P4(4)
P3(3)
687200Q
Signal for detecting the presence of optional OCT (LOW level
when installed, and HIGH level when not installed)
Signal for monitoring the amount of paper ejected on the OCT
tray (LOW level when not full, and HIGH level when full)
Signal for detecting the home position of the Offset Motor (LOW
level at the home position, and HIGH level not at the home
position)
Signal for switching on and off the Paper Offset Motor (LOW
level when switching on and HIGH level when switching off)
Signal for switching the direction of rotation of the Paper Offset
Motor (LOW level for the offsetting (forward) direction, and
HIGH level for the return direction)
Signal for switching on and off the OCT Motor (LOW level when
switching on and HIGH level when switching Off)
Signal for switching the direction of paper ejection (LOW level
to the standard tray and HIGH level to the optional unit)
Signal for monitoring paper when OCT is installed (LOW level
when paper is present, and HIGH level when paper is not
present)
Signal for communication between ESS and Mail Box
Signal for communication between ESS and Mail Box
P21 Signal Name
1 /OCT PRES
2 FULLSTK SNR
(OCT)
3 /OCT HOME SNR
4 /OFFSET MOT ON
5 /OCT FORWARD
6 /OCT MOT ON
11 /DIRECT SOL
12 /OCT EXIT
Function
Signal Direction
O: PWB OCT
M: MCU
O → M
Level
O → M
Level
O → M
Level
O ← M
Level
O ← M
Level
O ← M
Level
O ← M
Level
O → M
Level
Service Manual
Trigger HIGH LOW
Level Level
TTL TTL
TTL TTL
TTL TTL
TTL TTL
TTL TTL
TTL TTL
+5V 0V
TTL TTL
6-51