Circuit Cards (50, 100, And 155 Ipm); Hammer Driver; Motors/Solenoid Driver; Control Card - IBM System/32 Introduction And Maintenance Manual

4.1.5 Circuit Cards (50, 100, and 155 Ipm)
Hammer Driver
The hammer driver cards (3) each contain 22
hammer drivers and predrivers. This card also
determines if an odd number of hammers is on
to develop the hammer check lines.
Motors/Solenoid Driver
This card contains the drivers for the carriage
motor and belt motor. This card also contains
solenoid drivers for the upper and lower paper
clamp solenoids, and the ribbon drive clutch
solenoid.
Control Card
This card contains digital logic for generating
belt up-to-speed, home pulse, and subscans.
Also included are the impression control single-
shot, the oscillators for the carriage advance
pulses, and the voltage regulator that generates
the +8.5 voltage and +5 voltage for the printer.
Hanmer
Drivers
45-66
Hammer
Drivers
23-44
Hammer Cables (3)
23A, C, E
Hammer Fire
Control Cables (3)
238, D, F
Hammer
.-4+--+++-+---t-1t---
Drive rs
Sense Amplifier Card
for Forms Jam Detect
Control
.1::::::"'~=:::~~~~~--
Cable
Motors and
Solenoid Drivers
1-22
4-14