Service manual

Chapter 2
FileStore Service Manual 10
2.4.3 Printer port
Connector type: 26 way IDC connector
Standard Centronics - compatible port with control signals STRB, ACK, BUSY, SELECT
(all active low).
Printer port pinouts are as follows:
Pin 1 Data ready strobe notSTRB
Pin 3 Data 0 D0
Pin 5 Data 1 D1
Pin 7 Data 2 D2
Pin 9 Data 3 D3
Pin 11 Data 4 D4
Pin 13 Data 5 D5
Pin 15 Data 6 D6
Pin 17 Data 7 D7
Pin 19 Data acknowledge notACK
Pin 21 N/C N/C
Pin 23 N/C
Pin 25 N/C N/C
Pins 2-22 even 0V GND
Pin 24 N/C
Pin 26 N/C
2.5 Power input
2.5.1 Power input requirements
The power input requirements are as follows:
Minimum Nominal Maximum Units
Voltage 198 220/240 264 V AC
Frequency 50 Hz
Power 25 Watts
2.5.2 Mains interruptions (‘Brown out’)
The equipment has been designed to operate without malfunction during mains interruptions
as detailed below. The mains is assumed to be at nominal at all other times.
Voltage [V] Duration [msec] Frequency [Hz]
0 20 0.2
50% 50 0.2