Cx53 Trakball - Atari CX 5200 Field Service Manual

SECTION
7
CX53
TRAKBALL
Section
7
provides
the
information necessary
to
troubleshoot and
repair the
CX53
Trakball
which
is
used with the
model
5200.
The
following pages contain
descriptions,
test
procedures, diagnostic flowcharts, a
symptom
checklist,
disassembly/assembly
instructions and
a
parts
list
for the
CX53
Trakball.
The schematic
and silkscreen are
included separately.
This section
is
organized
as follows:
Page Information
7-1
through 7-4
An
overview
and
general
description of the
CX53
Trakball.
7-5 and 7-6 Theory
of
Operation and Block
Diagram
7-7 through 7-26
Test Procedures,
Diagnostic
Flowcharts
and
Symptom
Checklist
7-27 through 7-30 D
isassem bly/
Assembly
Procedures
7-31
and 7-32
The
CX53
Parts
List
The
Trakball Schematic and Silkscreen
accompany
this
manual.
OVERVIEW
The
CX53
Trakball
is
an analog controller
which can be substituted
for
the joystick
on
several
game
cartridges.
It is
composed
of
an outer case which houses the keypad
PC
board, the main
PC
board,
the
roller
shaft
assemblies,
an
idler
shaft
assembly and a
cue
ball.
Use Figure 7-1 and
7-2 as reference
for
the following discussion of Trakball
parts.
CX5200
Field Service
Manual
7-1