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Documentation page: the hosted PDF is jer/eightbitter's 2017 retyped edition with redrawn schematics; section table with printed and PDF pages; correct 'no PSU schematic' (a redrawn Mitsumi SR98 sheet is included); copyedit
 
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The '''Atari STe 520/1040 Computer Field Service Manual''' is Atari Corporation's service manual for the [[Atari 520STE]] and [[Atari 1040STE]], part number C302481-001 Rev A, August 1991. The hosted file is not a scan of Atari's printing. Its cover reads "Updated by jer/eightbitter, May 2017": the text and parts list have been retyped, with some OCR errors left in part numbers (for example "0398739-001" for the DMA controller C398739-001), and the section 9 schematics are redrawn. It has 81 pages with a text layer; the printed page numbers run five behind the PDF page numbers.
== Contents ==
{| class="wikitable" style="width:100%;"
! Section !! Printed pages !! PDF pages !! What it covers
|-
| Title, contents, notices || – || 1–5 || Part number, revision, date and Atari's copyright and parts-availability notice
|-
| 1 Introduction || 1–3 || 6–8 || Models, main components, case and panel layouts, the power supply (p. 3) and the negative supplies made on the main board (p. 3)
|-
| 2 Theory of operation || 4–23 || 9–28 || MPU, GSTMCU, main memory and SIMM rules, DMA, MFP, video, digitised sound, genlock, input/output subsystems and port pinouts including the game controller ports, system start-up and errors
|-
| 3 Testing || 24–42 || 29–47 || Test configuration, troubleshooting a dead unit, the diagnostic cartridge and each test in its menu, and the error-code quick reference (p. 38)
|-
| 4 Disassembly/assembly || 43–44 || 48–49 || STE disassembly and reassembly
|-
| 5 Symptom checklist || 45–46 || 50–51 || Display, disk drive, keyboard, MIDI, RS-232, printer port, hard disk port and DMA sound problems
|-
| 6 Diagnostic flowcharts || 47–51 || 52–56 || Replacement procedures, IC handling and four flowcharts
|-
| 7 Parts list || 52–55 || 57–60 || US 1040STE assemblies CA400338-201, CA400339-201, SE400340-111, CA400366-001, CA400495-001 and CA400329-101, with Atari part numbers and locations
|-
| 8 Glossary || 56–57 || 61–62 ||
|-
| 9 Schematics and silkscreens || 58– || 63–81 || Eight redrawn schematic sheets signed "jer" or "jer/eightbitter" and dated June 2017 (CPU, BLiTTER, ROM and clock; RS-232, parallel, MIDI and PSG; DMA, floppy and clock; MCU, Shifter and video; stereo sound, joysticks and paddles; RAM; the power supply; the DMA test fixture), then assembly drawings, keyboard drawings and PCB views with and without the BLiTTER
|}
== What it settles ==
Section 1.3 gives the supply figures: +5 V and +12 V, 2 A fuse, set to 5.1 V; rated 3 A at +5 V and 0.9 A at +12 V, 33.5 W maximum input; typical demand 1.75 A at +5 V and 86 mA at +12 V, rising to 2.2 A and 90 mA during disk access. It notes that the supply has overcurrent protection, so a blown fuse usually means a catastrophic failure such as a shorted primary. Section 1.4 explains that the negative supplies are made on the main board by two TL497 switching regulators: U204 for the RS-232 line drivers (normally ±12 V) and U205 for the −5 V audio supply.
Section 7 names the ICs by position (U100 68000, U101 BLiTTER, U102 and U103 TOS 1.62 ROMs, U200 and U201 6850 ACIAs, U202 YM2149, U203 68901 MFP, U204 and U205 TL497A, U300 DMA controller, U301 1772, U400 GSTMCU, U401 Shifter, U600–U603 SIMM sockets) and lists the electrolytic capacitors with value, voltage and location, including the 15 µF tantalums at C420, C424 and C426 and the 4700 µF part at C103.
== What this manual does not contain ==
* Atari's original schematics. The schematics in section 9 are 2017 redrawings; the supply sheet is headed as a Mitsumi SR98 unit, CA070086-002, which is not the US supply assembly (CA070059-003) named in the parts list.
* A parts list for the power supply, which appears in section 7 only as the single assembly CA070059-003, "ASSY PSU 110V STE USA/CAN".
* Parts lists for non-US machines or for the 520STE assembly; the list is for the US 1040STE.
* Coverage of the SM124 and SC1224 monitors, or of the ST, STF, STFM, Mega ST, Mega STE and TT. For the earlier machines see [[Atari 520ST and 1040ST Computer Field Service Manual]].
Atari's notice on PDF page 5 states that part numbers are for reference only and that only parts on the then-current dealer parts lists were available.
== Pages that cite this document ==
* [[Atari 520STE]]
* [[Atari 1040STE]]
* [[Atari STE Troubleshooting Guide]]
* [[Atari Mega STE Troubleshooting]]
* [[Atari Stacy Troubleshooting Guide]]
* [[Atari ST Book Capacitor Replacement Guide]]
<pdf> File:520ste.pdf </pdf>
<pdf> File:520ste.pdf </pdf>


Download Atari 520STE/1040STE Field Service Manual Here: [[:File:520ste.pdf]]
Download: [[:File:520ste.pdf|520ste.pdf]]


[[Category:Atari Service Manuals]]
[[Category:Atari Service Manuals]]
[[Category:Service Manuals]]

Latest revision as of 00:31, 1 October 2026

The Atari STe 520/1040 Computer Field Service Manual is Atari Corporation's service manual for the Atari 520STE and Atari 1040STE, part number C302481-001 Rev A, August 1991. The hosted file is not a scan of Atari's printing. Its cover reads "Updated by jer/eightbitter, May 2017": the text and parts list have been retyped, with some OCR errors left in part numbers (for example "0398739-001" for the DMA controller C398739-001), and the section 9 schematics are redrawn. It has 81 pages with a text layer; the printed page numbers run five behind the PDF page numbers.

Contents

[edit | edit source]
Section Printed pages PDF pages What it covers
Title, contents, notices – 1–5 Part number, revision, date and Atari's copyright and parts-availability notice
1 Introduction 1–3 6–8 Models, main components, case and panel layouts, the power supply (p. 3) and the negative supplies made on the main board (p. 3)
2 Theory of operation 4–23 9–28 MPU, GSTMCU, main memory and SIMM rules, DMA, MFP, video, digitised sound, genlock, input/output subsystems and port pinouts including the game controller ports, system start-up and errors
3 Testing 24–42 29–47 Test configuration, troubleshooting a dead unit, the diagnostic cartridge and each test in its menu, and the error-code quick reference (p. 38)
4 Disassembly/assembly 43–44 48–49 STE disassembly and reassembly
5 Symptom checklist 45–46 50–51 Display, disk drive, keyboard, MIDI, RS-232, printer port, hard disk port and DMA sound problems
6 Diagnostic flowcharts 47–51 52–56 Replacement procedures, IC handling and four flowcharts
7 Parts list 52–55 57–60 US 1040STE assemblies CA400338-201, CA400339-201, SE400340-111, CA400366-001, CA400495-001 and CA400329-101, with Atari part numbers and locations
8 Glossary 56–57 61–62
9 Schematics and silkscreens 58– 63–81 Eight redrawn schematic sheets signed "jer" or "jer/eightbitter" and dated June 2017 (CPU, BLiTTER, ROM and clock; RS-232, parallel, MIDI and PSG; DMA, floppy and clock; MCU, Shifter and video; stereo sound, joysticks and paddles; RAM; the power supply; the DMA test fixture), then assembly drawings, keyboard drawings and PCB views with and without the BLiTTER

What it settles

[edit | edit source]

Section 1.3 gives the supply figures: +5 V and +12 V, 2 A fuse, set to 5.1 V; rated 3 A at +5 V and 0.9 A at +12 V, 33.5 W maximum input; typical demand 1.75 A at +5 V and 86 mA at +12 V, rising to 2.2 A and 90 mA during disk access. It notes that the supply has overcurrent protection, so a blown fuse usually means a catastrophic failure such as a shorted primary. Section 1.4 explains that the negative supplies are made on the main board by two TL497 switching regulators: U204 for the RS-232 line drivers (normally ±12 V) and U205 for the −5 V audio supply.

Section 7 names the ICs by position (U100 68000, U101 BLiTTER, U102 and U103 TOS 1.62 ROMs, U200 and U201 6850 ACIAs, U202 YM2149, U203 68901 MFP, U204 and U205 TL497A, U300 DMA controller, U301 1772, U400 GSTMCU, U401 Shifter, U600–U603 SIMM sockets) and lists the electrolytic capacitors with value, voltage and location, including the 15 µF tantalums at C420, C424 and C426 and the 4700 µF part at C103.

What this manual does not contain

[edit | edit source]
  • Atari's original schematics. The schematics in section 9 are 2017 redrawings; the supply sheet is headed as a Mitsumi SR98 unit, CA070086-002, which is not the US supply assembly (CA070059-003) named in the parts list.
  • A parts list for the power supply, which appears in section 7 only as the single assembly CA070059-003, "ASSY PSU 110V STE USA/CAN".
  • Parts lists for non-US machines or for the 520STE assembly; the list is for the US 1040STE.
  • Coverage of the SM124 and SC1224 monitors, or of the ST, STF, STFM, Mega ST, Mega STE and TT. For the earlier machines see Atari 520ST and 1040ST Computer Field Service Manual.

Atari's notice on PDF page 5 states that part numbers are for reference only and that only parts on the then-current dealer parts lists were available.

Pages that cite this document

[edit | edit source]

Download: 520ste.pdf

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