Canon multipass c3000 Service Manual (en)

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JCNTR1 (Centronics connector in ECP mode)
Pin No.
Signal
In/Out
Source
Description
1
STB*
IN
Computer
*
1
2
DATA0
IN/OUT Computer
Data bus
3
DATA1
IN/OUT Computer
Data bus
4
DATA2
IN/OUT Computer
Data bus
5
DATA3
IN/OUT Computer
Data bus
6
DATA4
IN/OUT Computer
Data bus
7
DATA5
IN/OUT Computer
Data bus
8
DATA6
IN/OUT Computer
Data bus
9
DATA7
IN/OUT Computer
Data bus
10
ACK*
OUT
---
*
2
11
BUSY
OUT
PCNT board (IC5)
*
3
12
PE
OUT
PCNT board (IC5)
*
4
13
SELECT
OUT
PCNT board (IC5)
*
5
14
AFXT*
IN
Computer
*
6
15
Not used
16
GND
---
---
Ground
17
GND
---
---
Ground
18
+5.0V
OUT
Power supply
Power ON Signal
19
GND
---
---
Ground
20
GND
---
---
Ground
21
GND
---
---
Ground
22
GND
---
---
Ground
23
GND
---
---
Ground
24
GND
---
---
Ground
25
GND
---
---
Ground
26
GND
---
---
Ground
27
GND
---
---
Ground
28
GND
---
---
Ground
29
GND
---
---
Ground
30
GND
---
---
Ground
31
INIT*
IN
Computer
*
7
32
FAULT*
OUT
PCNT board (IC5)
Printer interrupt signal
33
GND
---
---
Ground
34
Not used
35
+5.0V
OUT
Power supply
Peripheral
36
SELECTIN* IN
Computer
-SLCT IN
*
1
Data transmission synchronizing signal (Forward direction)
*
2
Data transmission synchronizing signal (Reverse direction)
*
3
Data reception completion signal (Forward direction)
*
4
Data transmission direction change response signal
*
5
Extension request response signal
*
6
Data reception completion signal (Reverse direction)
*
7
Data transmission direction change request signal
Part 2: Printer
3-8