Atari 1040STE, Field Service Manual

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III
TABLE OF CONTENTS
SECTION ONE: INTRODUCTION ................................................................................... 1
1.0 Overview .......................................................................................................... 1
1.1 Main Components ............................................................................................ 1
1.2 Case Design .................................................................................................... 1
1.3 Power Supply ................................................................................................... 3
1.4 Negative Supplies ............................................................................................ 3
SECTION TWO. THEORY OF OPERATION .................................................................. 4
2.0 Overview .......................................................................................................... 4
2.1 Main System .................................................................................................... 4
2.2 Audio/Video Subsystem ................................................................................... 4
2.3 InputlOutput Subsystems ................................................................................. 5
2.4 Microprocessing Unit ........................................................................................5
2.5 GSTMCU ..........................................................................................................5
2.6 Main Memory ................................................................................................... 6
2.7 Direct Memory Access ..................................................................................... 7
2.8 Multi–Function Peripheral Control ....................................................................7
2.9 Audio/Viideo Subsystem .................................................................................. 8
2.10 Digitized Sound ................................................................................................ 10
2.11 Genlock and the STE ....................................................................................... 10
2.12 Input/Output Subsystems .................................................................................11
2.13 System Startup ................................................................................................ 21
2.14 System Errors .................................................................................................. 22
SECTION THREE: TESTING .......................................................................................... 24
3.1 Overview .......................................................................................................... 24
3.2 Test Configuration ............................................................................................25
3.3 Troubleshooting a Dead Unit ........................................................................... 25
3.4 Diagnostic Cartridge ....................................................................................... 26
3.5 Power Up Sequence ....................................................................................... 26
3.6 Test Menu ....................................................................................................... 28
3.7 RAM Test ........................................................................................................ 28
3.8 ROM Test ........................................................................................................ 29
3.9 Color Test ........................................................................................................ 29
3.10 Keyboard Test ................................................................................................. 30
3.11 MIDI Tests ........................................................................................................ 31
3.12 RS232 Tests .................................................................................................... 31
3.13 Audio Test ........................................................................................................ 32
3.14 Timing Tests .................................................................................................... 33
3.15 DMA Tests ....................................................................................................... 34
3.16 FIoppy Disk Tests ............................................................................................ 34
3.17 Printer and Joystick Port Tests ........................................................................ 36
3.18 Monochrome Monitor ....................................................................................... 37
3.19 Hard Disk WriteIRead ...................................................................................... 37
3.20 Graphics Chip BLiT .......................................................................................... 38
3.21 Error Codes (quick Reference)......................................................................... 38
SECTION FOUR: DISASSEMBLY/ASSEMBLY …………………………………………… 43
4.1 STE Disassembly .............................................................................................43
4.2 STE Reassembly ............................................................................................. 44