Atari CX 5200 User manual

CX5200 Field Service Manual
2
ATARI
ATARIATARI
ATARI
ADVANCED VIDEO ENTERTAINMENT SYSTEM
ADVANCED VIDEO ENTERTAINMENT SYSTEMADVANCED VIDEO ENTERTAINMENT SYSTEM
ADVANCED VIDEO ENTERTAINMENT SYSTEM
MODEL 5200
MODEL 5200MODEL 5200
MODEL 5200
TM
TMTM
TM
FIELD SERVICE MANUAL
FIELD SERVICE MANUALFIELD SERVICE MANUAL
FIELD SERVICE MANUAL

CX5200 Field Service Manual
Atari believes that the information described in this manual is accurate and
reliable, and much care has been taken in its preparation. However, no
responsibility, financial or otherwise, shall be accepted for any consequences
arising out of the use of this material. Information contained herein is subject to
change. Revisions may be issued to advise of such changes and/or additions.
Correspondence regarding this document should be forwarded to Director of
Technical Support, Consumer Product Service, Atari, Incorporated, 845 W.
Maude, Sunnyvale, California 94086.

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TABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
Section
SectionSection
Section Title
TitleTitle
Title Page
PagePage
Page
INTRODUCTION 8
1 THEORY OF OPERATION 9
Overview 9
Model 5200 Console 9
Four - Port Universal PCB differences 9
Two - Port Universal PCB differences 10
Outer Case 11
RF Shield 11
PC Board 11
Microprocessor Chip - MPU 12
Alphanumeric Television Interface
Controller (ANTIC? 1
Graphic Television Interface Adaptor (GTIA) 1
Pot Keyboard Integrated Circuit (POKEY) 14
Switchbox 15
Game Controller 15
2 SILKSCREENS AND SCHEMATICS 16
4 – Port MODEL 5200 TESTING -1
Equipment Requirements -1
Testing with the Diagnostic
Cartridge (Version 1.1) -1
Overview of Tests -1
Initialization -1
Power-up Screen -
Solid (Slack) Coloured Screen or
Vertically Lined Screen -
Snowy Screen -4
Warped-Ragged Picture -4
Colour Bar Test -4
Grey Bar Test -5
Any Video Screen -6
Pokey Adjust -7
Error Summary -8
RAM Test -10
Verify ROM -10
Port Test -10
Tone Test -10

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TABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS (Continued)
S
SS
Section
ectionection
ection Title
TitleTitle
Title Page
PagePage
Page
A 2 – Port MODEL 5200 TESTING A-1
Equipment Requirements A-1
Testing with the Diagnostic Cartridge A-1
(Version 1.1)
Overview of Tests A-1
Initialization A-1
Power-Up Screen A-2
Solid Coloured (Black) Screen or A-
Vertically Lined Screen
Snowy Screen A-
Warped-Ragged Picture A-
Colour Bar Test A-4
Grey Bar Test A-5
Any Video Screen A-6
Verify OS ROM A-7
Tone Test A-7
POKEY (Port) Test A-8
RAM Test A-8
POKEY Adjust Test A-9
POKEY Softfire Test A-10
4 4 – Port 5200 DIAGNOSTIC FLOWCHART 4-1
Overview 4-1
The Swap-out Procedure 4-1
Replace in Order 4-1
ATARI Repair Hotline 4-I
4A 2 – Port 5200 DIAGNOSTIC FLOWCHART 4A-1
Swapout Procedure 4A-1
Replace In Order 4A-1
ATARI Repair Hotline 4A-1
5 4 – Port 5200 SYMPTOM CHECKLIST 5-1
5A 2 – Port 5200 SYMPTOM CHECKLIST 5A-1
6 GAME CONTROLLERS 6-1
Overview 6-1
Joystick 6-2
Key Pad 6-2
Fire Buttons 6-2
Select Buttons 6-2

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TABLE OF CONTENTS
TABLE OF CONTENTS TABLE OF CONTENTS
TABLE OF CONTENTS (Continued)
Se
SeSe
Section
ctionction
ction
Title
TitleTitle
Title Page
PagePage
Page
Controller Testing 6-
Controller Testing without a Model 5200 Console 6-5
Failures 6-6
POT Arm Alignment Procedure 6-8
Controller Disassembly/Assembly 6-10
CX52 Game Controller Schematic 6-1
7 CX5 Trakball 7-1
8 PARTS LIST 8-1
9 SERVICE BULLETINS 9-1
LIST OF ILLUSTRATIONS
LIST OF ILLUSTRATIONSLIST OF ILLUSTRATIONS
LIST OF ILLUSTRATIONS
Figure
FigureFigure
Figure
Title
TitleTitle
Title Page
PagePage
Page
1-1 Model 5200 Console 10
1-2 Channel 2- Switch and Future Development Access 11
1- MPU Pin Assignments 12
1-4 ANTIC Pin Assignments 1
1-5 GTIA Pin Assignments 14
1-6 POKEY Pin Assignments 14
2-1 4 – Port 5200 CA018087 Motherboard Silkscreen 17
2-2 4 – Port 5200 CA018087 Motherboard Schematic Part 1 18
2- 4 – Port 5200 CA018087 Motherboard Schematic Part 2 19
2-4 4 – Port 5200 CA018087 Motherboard Schematic Part 20
2-5 4 – Port 5200 CA020108 Motherboard Silkscreen 21
2-6 4 – Port 5200 CA018108 Motherboard Schematic Part 1 22
2-7 4 – Port 5200 CA018108 Motherboard Schematic Part 2 2
2-8 4 – Port 5200 CA018108 Motherboard Schematic Part 24
2-9 2 – Port 5200 CA021 74 Motherboard Silkscreen 25
2-10 2 – Port 5200 CA021 74 Motherboard Schematic Part 1 26
2-11 2 – Port 5200 CA021 74 Motherboard Schematic Part 2 27
2-12 2 – Port 5200 CA021 74 Motherboard Schematic Part 28
2-1 Trakball Silkscreen 29
2-14 Trakball Schematic Part1 0
2-15 Trakball Schematic Part2 1
-1 Power-Up Screen
-2 Test Menu Screen 4
- Color Bars Screen 5
-4 Grey Bars Screen 5
-5 Anyvideo Screen 6
-6 Pokey Adjust Screen 6
-7 Softfire Signal 7
-8 Error Summary 7
A-1 Power-Up Screen 41
A-2 Test Menu Screen 42
A- Color Bars Screen 4
A-4 Grey Bars Screen 4

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LIST OF ILLUSTRATIONS
LIST OF ILLUSTRATIONSLIST OF ILLUSTRATIONS
LIST OF ILLUSTRATIONS (cont.)
(cont.) (cont.)
(cont.)
Figure
FigureFigure
Figure
Title
TitleTitle
Title Page
PagePage
Page
A-5 Anyvideo Screen 44
A-6 Pokey Adjust Screen 44
A-7 Softfire Signal 45
A-8 Error Summary 45
6-1 CX52 Game Controller 6-1
6-2 Joystick Positions 1 or 2 6-
6- Cable Connector Pins (End View) 6-6
6-4 Pot do Arm Assembly 6-8
6-5 Controller Top (Underside) 6-9
6-6 Select Switch Beze1 Removal 6-10
6-7 Controller Knob Removal 6-11
6-8 Pot Arm Positions for Assembly 6-11
6-9 CX52 Game Controller Schematic 6-1
7-1 Top Cover Assembly 7-2
7-2 Bottom Cover Assembly 7-
7- Trakball Block Diagram 7-6
7-4 Diagonal or Circular Motion 7-8
7-5 Cue Ball Support 7-27
7-6 Top Cover (Underside) 7-28
7-7 Main PC Board 7-29
LIST OF TABLES
LIST OF TABLESLIST OF TABLES
LIST OF TABLES
Table
TableTable
Table Title
TitleTitle
Title Page
PagePage
Page
-1 Diagnostic Error Codes -9
6-1 Game Controller Continuity Check 6-7
7-1 Keyboard Test Display 7-7

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INTRODUCTION
INTRODUCTIONINTRODUCTION
INTRODUCTION
The Atari Advanced Video Entertainment System (Model 5200) Field Service
Manual is a reference guide for you, the service technician.
This Field Service Manual is organized in twelve sections:
•THEORY OF OPERATION – Overview of how the Model 5200 works and
what its basic assemblies look like.
•SILKSCREENS AND SCHEMATICS – Electrical drawings and layouts of
all of the Model 5200 printed circuit boards.
•4 – PORT 5200 TESTING – Review of Diagnostic Tests available for
diagnosing 4 – Port Model 5200 problems.
•2 – PORT 5200 TESTING – Review of Diagnostic Tests available for
diagnosing 2 – port Model 5200 problems.
•4 – PORT 5200 DIAGNOSTIC FLOWCHART – Aids for troubleshooting
the 4 – Port Model 5200.
•2 – PORT 5200 DIAGNOSTIC FLOWCHART – Aids for troubleshooting
the 2 – Port Model 5200.
•4 – PORT 5200 SYMPTOM CHECKLIST – Failure information to assist
the experienced technician arrive at a rapid diagnosis of 4 – Port Model
5200 problems.
•2 – PORT 5200 SYMPTOM CHECKLLST – Failure information to assist
the experienced technician arrive at a rapid diagnosis of 2 – Port Model
5200 problems.
•GAME CONTROLLERS – Overview of hand controller construction with
electrical schematics and recommended test and repair procedures.
•TRAKBALL CONTROLLER – Overview of trakball construction with
electrical schematics and recommended test and repair procedures.
•PARTS LLST – Detailed breakdown of all parts used in the 4 – Port and 2
– Port models.
•SERVICE BULLETINS – Section to be used to hold Field Change Orders,
Upgrade Bulletins and Tech Tips.
This manual is designed for use by both the experienced and inexperienced
service technician. The Diagnostic Flowcharts (Sections 4 and 4A) provide
detailed procedures for technicians not completely familiar with the 5200
models. The Symptom Checklists (Sections 5 and 5A) provide a rapid reference
for the more experienced technician.

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SECTION 1
SECTION 1SECTION 1
SECTION 1
THEORY OF OPERATION
THEORY OF OPERATIONTHEORY OF OPERATION
THEORY OF OPERATION
Overview
OverviewOverview
Overview
The ATARI Advanced Video Entertainment System (Model 5200) is an advanced
microcomputer. It receives input from the game controllers, Read-Only-Memory
(ROM) cartridges and other peripherals, and displays this input on a T.V. screen.
A maximum of four players may play at one time.
The Model 5200 is composed of the console, switchbox and game controllers. The
following paragraphs provide a general discussion of each of these items and
their component parts. For a detailed discussion of the Game Controller see
SECTION 6.
Model 5200 CONSOLE
Model 5200 CONSOLEModel 5200 CONSOLE
Model 5200 CONSOLE
The Model 5200 console is composed of an outer plastic case which houses the PC
board and its RF Shield. Figure 1-1 shows the console and its parts.
There are currently three different PC Boards being used in Mode! 5200
consoles. Some models contain the original 4 – Port PC Board, number
CA018087. Other consoles contain a 4 – Port universal PC Board, number
CA020108. A third PC Board with only two player pots, number CA021 74, is
also available. Unless otherwise specified, the references in this manual pertain
to the original 4 – Port PCB, number CA018087. The specific differences of the 4
– Port universal PCB and the 2 – port universal PCB are called out below.
Four
FourFour
Four-
--
-Port Universal PCB differences:
Port Universal PCB differences:Port Universal PCB differences:
Port Universal PCB differences:
External
The ATARI serial number on the bottom of the unit will have a + as its third
designator. For example:
A T
A TA T
A T +
++
+ 2 1
2 1 2 1
2 1
Internal
1. The chip designators have been changed. All chips are designated A
instead of U.
2. Two 74LS244 Ics (U4 and U15) were removed from the PC Board.
. Two 74LS244 Ics (U14 and U28) were replaced with a 74LS125 (A14) and
a 74LS51 (A15).
4. Provisional circuitry for future expansion has been added in order to
accommodate the VCSTM cartridge adaptor.
4
4 4
4 –
––
– Port
Port Port
Port
DESIGNATOR
DESIGNATORDESIGNATOR
DESIGNATOR
CITE CODE
CITE CODECITE CODE
CITE CODE
DATE
DATEDATE
DATE

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Two
TwoTwo
Two-
--
-Port Universal PCB differences:
Port Universal PCB differences:Port Universal PCB differences:
Port Universal PCB differences:
1. All of the 4 – Port universal board differences listed above are included on
the 2 – Port universal PCB.
2. Ports and 4 and their associated discrete components have been
removed.
. Ics A12 and A1 have been removed.
4. The automatic switchbox has been replaced with a manual switchbox and
the RF cable has been replaced with the standard RF cable.
5. The power adaptor plugs directly into the rear of the console instead of
plugging into the switchbox.
Figure 1-1. Model 5200 console (4 – Port)

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Outer Case
The outer case consists of a bottom and a top plastic cover which are held
together by five Phillips-head screws.
At the rear of the bottom plastic cover (Figure 1-2) is:
a) an opening for access to the channel 2- switch
b) a removable door which allows access for future development.
In the base is a cable wrap post for RF cable storage.
Figure 1-2. Channel 2- Switch and Future Development Access
The top plastic cover provides:
1) openings at the front for the four player ports
2) the power switch cover
) the power ON/OFF switch
4) a storage area at the rear for two game controllers. The hinged cover for
this area comes off as a separate piece when the top cover is disassembled.
RF Shield
An aluminium shield covers the PC Board and prevents the PC Board from
generating interference on the T.V. screen.
PC Board
The console you are servicing may contain either the original PC Board Number
CA01.8087 or the newer PC Boards Numbers CA020108 or CA021 74. See Page
1-1 of this manual for an explanation of the three board’s differences.
C
hannel 2
-
Future Development Access

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The PC Board consists of:
•28 Integrated Circuit Chips on PC Board Number CA018087; 26
Integrated Circuit Chips on PC Board Number CA020108; 24 Integrated
Circuit Chips on PC Board Number CA021 74.
•a cartridge socket
•an RF module
•various discrete components
The major chips on the PC Board are:
Microprocessor Chip
Microprocessor Chip Microprocessor Chip
Microprocessor Chip –
––
– MPU
MPU MPU
MPU
The microprocessor (MPU) is the brain of the 5200. It makes the major
decisions based on information from the ROM cartridge and the Random
Access Memory. Figure 1- shows the pin assignments for the MPU.
Figure 1- . MPU Pin Assignments

CX5200 Field Service Manual
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Alphanumeric Television Interface Controller (ANT
Alphanumeric Television Interface Controller (ANTAlphanumeric Television Interface Controller (ANT
Alphanumeric Television Interface Controller (ANTIC)
IC)IC)
IC)
The primary function of the Alphanumeric Television Interface Controller
(ANTIC) chip is to get data from memory, independent of the processor, for
display on the video screen. Figure 1-4 shows the pin assignments for the
ANTIC.
Figure 1-4. ANTIC Pin Assignments
Graphic Television Interface Adaptor (GTIA)
Graphic Television Interface Adaptor (GTIA)Graphic Television Interface Adaptor (GTIA)
Graphic Television Interface Adaptor (GTIA)
The Graphic Television Interface Adaptor (GTIA) chip retrieves graphics data
from memory via the ANTIC DMA process. This data is routed to the GTI~
graphics registers. Figure 1-5 shows the pin assignments for the GTIA.

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Figure 1-5. GTIA Pin Assignments
POT Keyboard Integrated Circuit (POKEY)
POT Keyboard Integrated Circuit (POKEY)POT Keyboard Integrated Circuit (POKEY)
POT Keyboard Integrated Circuit (POKEY)
The Pot Keyboard Integrated Circuit (POKEY) chip provides the interface
between the game ports and the microprocessor. It also contains four semi-
independent audio channels, each with its own frequency, noise, and volume
control. Figure 1-6 shows the pin assignments of the POKEY.
Figure 1-6. POKEY Pin Assignments

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S
SS
Switchbox
witchboxwitchbox
witchbox
A switchbox is connected and mounted to the back of the television set. The
switchbox that is used with the 4 – Port Models is different from other
switchboxes manufactured by Atari and from the 2 – Port Mode1 5200. These
differences include:
1) power for the Model 5200 supplied through the switchbox
2) two Select Switch functions. The two functions are:
NORMAL – Allows the Model 5200 to automatically switch between the
television and the game when the Model 5200 ON/OFF switch is pressed.
STANDBY – Enables television viewing while the Model 5200 is turned
on.
G
GG
Game con
ame coname con
ame controller
trollertroller
troller
The game controller supplied with the Model 5200 is composed of an analog
joystick, a 12-key Keypad, two separate Fire Buttons on each side, and three
Select Buttons. The game controller is discussed in detail in Section 6.
SUMMARY
The Model 5200 is an advanced microcomputer which receives input from the
Game Controllers, Read-Only-Memory (ROM) cartridges, and other peripherals.
The console PC Board is housed within an outer case and contains four major
chips which allow for interaction between the game and the player. They are: the
Microprocessor (MPU), the Alphanumeric Television Interface Controller
(ANTIC), the Graphic Television Interface Adaptor (GTIA), and the POT
Keyboard Integrated Circuit (POKEY).
The console, switchbox, and Game Controllers male up the Model 5200 System
which is addressed in the remainder of this manual.

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SECTION 2
SECTION 2SECTION 2
SECTION 2
SILKSCREENS AND SCHEMATICS
SILKSCREENS AND SCHEMATICSSILKSCREENS AND SCHEMATICS
SILKSCREENS AND SCHEMATICS
On the following pages are representative silkscreens and schematics for the
Model 5200. Minor variations in design may be encountered depending on the
production date of the unit, but these schematics provide all details required for
an in-depth understanding of all Model 5200 units.

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Figure 2 – 1. 4 – Port 5200 CA018087 Motherboard Silkscreen

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Figure 2
– 2. 4 – Port 5200 CA018087 Motherboard Schematic Part 1

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Figure 2 – . 4 – Port 5200 CA018087 Motherboard Schematic Part

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Figure 2 – 4. 4 – Port 5200 CA018087 Motherboard Schematic Part