Parallel Interface - Oki OKIPAGE 24DX Service Manual

Parallel Interface

(1) Connector
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Printer side: 36 receptacle
Type: 57RE-40360-830B-D29 (made by DDK) or equivalent
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Cable side: 36-pin plug
Type: 57-30360 (made by DDK) or equivalent
(2) Cable
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Cable length: 6 feet (1.8 m) max.
(a shielded cable composed of twisted pair wires is recommended for noise prevention).
3) Table of Parallel I/F signals
Pin No. Signal Name
1 DATA STROBE
2 - 9 DATA BIT - n
10
ACKNOWLEDGE
11 BUSY
12 PAPER END
13 SELECT
14
AUTO FEED
15 -
16 0V
17 CHASSIS GROUND
18 +5V
19 0V
20~27 0V
28 0V
29 0V
30 0V
31
INPUT PRIME
32
FAULT
33 0V
34 -
35 HILEVEL
36 SEL-IN
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Connector pin arrangement
Service Guide OKIPAGE 24DX/24DXn
Chapter A Centronics Parallel Interface
Signal Compatible
Direction
--> PR nStrobe
--> PR
<-- PR nAck
<-- PR Busy
<-- PR Perror
<-- PR Select
--> PR nAutoFb
,__ PR
-
-
-
-
--> PR nInit
<-- PR nFault
<-- PR
-- PR nSelectln
Nibble ECP
Host Clk Host Clk
Data 1 (LSB) ~ 8
(MSB)
Ptrclk PeriphClk
PtrBusy PeriphAck
AckDataReq nAck Reverse
Xflag Xflag
HostBusy HostAck
Signal Ground
Chassis Ground
+5V supply
(50mAm)
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
nInit nPeriphRequest
nDataAvail nPeriphRequest
-
-
High Level
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