REV.-B
2.2 CABLE CONNECTIONS
Figure 2-1 shows the interconnection of the primary components, with the main board at the center.
I
MODEL-3A1O PRINTER MECHANISM
I
ON
J
CR
PAPER
HOME
HEAD
END
Posh
I I
c
z
L
1
BOARD
c
z
( M A I N B O A R D )
ROCK FILTER UNIT
z
AC120V
z
36pin
(POWER TRANSFORMER
AND FILTER)
r
8-BIT
I
#8100 SERIES
PARALLEL
I
l/F BOARD
I
l/F
- -
20V
Fig. 2-1. Cable Connections
The
board connectors are as follows:
1 :
CN2:
CN3:
CN4:
CN6:
CN7:
CN8:
8-bit parallel interface connector. Used for data communication with the host computer.
Connector for the #8 100 series optional interface
Receives data from the LCPNL board switches, and outputs the signals to the LEDs and the
buzzer.
Outputs data to the printhead.
Outputs the control signals and drive voltages to the paper feed and carriage motors.
Receives the paper end signal from the printer mechanism.
Receives the home position signal from the printer mechanism.
Receives AC voltages from the ROC filter unit.
The pin numbers and functions for each connector are listed in Tables A-8 through A-15 of the
APPENDIX.
2-2
