Table of Contents
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Sub-Section
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1.
INTRODUCTION
The printer comprises six main assemblies (see Figures 1 and 2):
(a)
Top Cover Assembly,
( b ) Belt Assembly,
( c ) Motor and Gear Train Assembly,
( d )
Control Electonics, Loom and Edge-Connector Assembly,
(e)
Base Frame Assembly,
( f ) Paper Reel Carrier Assembly.
2.
TOP COVER ASSEMBLY
2.1
The top cover assembly consists of a moulded plastic cover, a metal
conductor s t r i p , and a serrated p l a s t i c strip which forms a cutting
edge to facilitate tearing off the paper p r i n t o u t .
m o u l d e d into the underside of the cover to house the upper ends of the
drive and i d l e r pulley shafts.
frame by four screws which are inserted from the underside of the base
(see Figure 3).
3.
BELT AND STYL I ASSEMBLY
3.1
This assembly comprises an endless, internally-toothed plastic belt to
which are attached two hair-pin styli.
on the upper edge of the belt, and is retained by a push-on cap.
belt is located on two similar pulleys, one of which is driven by the
motor via bevel gearing, while the other is an idler.
SECTION 2
SYSTEM DESCRIPTION
LIST OF CONTENTS
Introduction
Top Cover Assembly
Belt and Styl i Assembly
Motor and Gear Train Assembly
Control Electronics Board
Base Frame Assembly
Paper Reel Carrier Assembly
Logic Description
Circuit Description
The assembly is secured to the base
2.1
Two bushes are
Each stylus f i t s over a spigot
Page No.
2.1
2.1
2.1
2.2
2.2
2.2
2.2
2.3
2.3
The
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