Oki OKIPAGE 14i, Service Manual

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10 9 10 RXD2-P I Serial data input 9 OVL C Ground for logic
12 11 12 +5V I Logic circuit
supply voltage 11 +5V I Logic circuit supply
voltage
14 13 14 +3.3V I LED head supply
voltage 13 +3.3V I LED head supply
voltage
16 15 16 OVL C Logic ground 15 OVL C Logic ground
18 17 18 +38V I Motor and fan
drive voltage and
source voltage for
high voltage
supply 17 +38V I Motor and fan drive
voltage and source
voltage for high
voltage supply
20 19 20 HEATON-N O Heater on 19 TRSEL2 O TR control switch
22 21 22 -8V I RS232C line
voltage 21 0VP C Analog
24 23 24 +8V I RS232C line
voltage 23 0VP C Analog
26 25 26 TRSEL3-N O TR control switch 25 0VP C Analog
O: Out
I: In
C: Common
CENT Connector Pin Assignment (To Centro parallel I/F)
l l
Pin
No. I/O* Signal Description Pin
No. I/O Signal Description
1 19 1 I Strobe Strobe 19 C SG Ground
2 20 2 C DATA1-P Data bit 0 20 C SG Ground
3 21 3 C DATA2-P Data bit 1 21 C SG Ground
4 22 4 C DATA3-P Data bit 2 22 C SG Ground
5 23 5 C DATA4-P Data bit 3 23 C SG Ground
6 24 6 C DATA5-P Data bit 4 24 C SG Ground
7 25 7 C DATA6-P Data bit 5 25 C SG Ground
8 26 8 C DATA7-P Data bit 6 26 C SG Ground
9 27 9 C DATA8-P Data bit 7 27 C SG Ground
10 28 10 O ACK-N Acknowledge 28 C SG Ground
11 29 11 O BUSY-P Busy 29 C SG Ground
12 30 12 O PE-P paper end 30 C SG Ground
13 31 13 O SEL-P Select 31 I IPRIME-N Input prime
14 32 14 I AUTOFEED-N Auto feed 32 O FAULT-N Fault
15 33 15 NC Not connected 33 C SG Ground
16 34 16 C SG Ground 34 NC Not connected
17 35 17 C FG 35 O HILEVEL Always kept high