Editing Atari 1050 Documentation

The '''Atari 1050 documentation''' below comprises Atari's field service manual for the [[Atari 1050]] disk drive, Howard W. Sams & Co.'s ''Computerfacts'' service data for it, and Atari's owner's guide.

== Atari 1050 Disk Drive Field Service Manual ==

The ''1050 Disk Drive Field Service Manual'' is Atari's service manual for the drive, part number FD100330. A separate scan of the Rev. 03 edition, dated October 1985, carries that part number on its cover.<ref name="rev03">Internet Archive item [https://archive.org/details/atari1050diskdrivefieldservicemanualrev.031985atari atari1050diskdrivefieldservicemanualrev.031985atari], "Atari 1050 Disk Drive Field Service Manual, Rev. 03 (1985)", 40-page scan with cover.</ref> The copy hosted here is a 77-page rebuilt scan without the cover, with the original schematic sheets and cleaner redrawn copies of them; its contents and page numbers match the Rev. 03 scan, which lacks many pages of sections 1 to 3.<ref name="akh">Internet Archive item [https://archive.org/details/1050FSMRebuiltAKH 1050FSMRebuiltAKH], "1050 Field Service Manual", described there as complete and with cleaner schematics.</ref>

=== Contents ===

{| class="wikitable"
! Section !! Title !! Pages
|-
| || Introduction || v
|-
| 1 || Theory of operation: front and back panels, mechanical theory (case, drive mechanism, head carriage, drive and stepper motors), power supply and power-up logic, electronics theory (clock, 6507, ROM, RAM, 6532, 2793, write/erase, write protect and read logic, heads), serial bus line assignments, electrical specification and protocol || 1-1 to 1-21
|-
| 2 || Test equipment and diagnostic tests: equipment, hook-up, mechanical checks, power-up test, diagnostic diskette, speed calibration, alignment tests, burn-in, error printout, track zero sensor calibration || 2-1 to 2-11
|-
| 3 || Disassembly and assembly, including plug polarity (figure 3-1) || 3-1 to 3-2
|-
| 4 || Symptom checklist, then signal waveforms for the motor, tachometer, stepper, diskette enable, track 00, read, write, erase, clock, write protect, power supply and data lines || 4-1 to 4-17
|-
| 5 || Drawings and parts list: schematics (Tandon, four sheets), silkscreen, 1050 parts list (Tandon) || 5-1 to 5-11
|-
| 6 || Appendix 6A, 1050 specifications || 6A-1 to 6A-3
|-
| 7 || Service bulletins: Tech Tip 21, 30 September 1983 (ROM revision E or F) || 
|}

=== What this manual does not contain ===

* Capacitor values in the parts list. The list gives mechanical assemblies, semiconductors, inductors, the trimmers and the variable capacitor; capacitor values and ratings appear only on the four schematic sheets.
* Parts for the World Storage Technology mechanism. The parts list and schematics are for the Tandon TM50-1 version.
* A head azimuth adjustment. Atari replaces the mechanism if azimuth is out of specification.
* Any lubrication procedure.

=== Pages that cite this manual ===

* [[Atari 1050]]: specifications, chip list, power supply, history of the ROM revision
* [[Atari 1050 Maintenance Guide]]: speed, track 00 and alignment procedures, disassembly, cleaning
* [[Atari 1050 Drive Troubleshooting]]: self test, diagnostic tests, symptom checklist, test points
* [[Atari 1050 Capacitor Replacement Guide]]: power supply and test points

<pdf width="800" height="500">File:Atari 1050 Disk Drive Field Service Manual.pdf</pdf>

Download: [[:File:Atari 1050 Disk Drive Field Service Manual.pdf|Atari 1050 Disk Drive Field Service Manual.pdf]]

== Sams Computerfacts CD13, Atari Model 1050 Disk Drive ==

''Computerfacts'' CD13 is Howard W. Sams & Co.'s technical service data for the 1050, dated February 1987, 22 pages including a fold-out schematic and an enclosed set of preliminary service checks.<ref name="sams">Howard W. Sams & Co., ''Computerfacts'' CD13, ''Atari Model 1050 Disk Drive'' (1987), index page.</ref>

=== Contents ===

From the index (printed page numbers): schematic, 2; main board photographs, 3, 4, 13 and 14; grid location guide for the main board, 5; test equipment and troubleshooting, 6; parts list, 7 to 9; logic chart, 10 and 11; line definitions and schematic notes, 11; chassis top view, 12; IC pinouts and terminal guides, 16 and 17; general operating instructions, 17. The enclosed preliminary service checks (pages i to viii) cover disassembly, a numbered list of service checks keyed to photographs, and general preventive maintenance.<ref name="sams" />

=== What this document does not contain ===

* Voltage ratings for most electrolytic capacitors. The parts list rates only C2 (0.68 µF 35 V) and C41 (4.7 µF 16 V); the schematic gives values only.
* Atari part numbers. Sams lists replacement parts by description and gives no Atari numbers.

=== Pages that cite this document ===

* [[Atari 1050]]: regulator types and part differences
* [[Atari 1050 Capacitor Replacement Guide]]: capacitor values and regulator input voltages
* [[Atari 1050 Drive Troubleshooting]]: power supply, motor, stepper and communication checks
* [[Atari 1050 Maintenance Guide]]: head cleaning recommendation

<pdf width="800" height="500">File:Sams Computerfacts CD13 Atari 1050 Disk Drive.pdf</pdf>

Download: [[:File:Sams Computerfacts CD13 Atari 1050 Disk Drive.pdf|Sams Computerfacts CD13 Atari 1050 Disk Drive.pdf]]

== Atari 1050 Disk Drive Owner's Guide ==

The ''Atari 1050 Disk Drive Owner's Guide'' (Atari, 1982) is the 8-page guide packed with the drive. It covers connecting the drive and its adaptor, daisy-chaining up to four drives, the drive select switches, the DOS manuals supplied with the drive and the care of diskettes. It contains no specifications and no service information.

=== Pages that cite this guide ===

* [[Atari 1050]]: drive select switches
* [[Atari 1050 Maintenance Guide]]: placement and diskette handling

<pdf width="800" height="500">File:Atari 1050 Disk Drive Owner's Guide.pdf</pdf>

Download: [[:File:Atari 1050 Disk Drive Owner's Guide.pdf|Atari 1050 Disk Drive Owner's Guide.pdf]]

== References ==

<references />

{{Navbox-AtariPeripherals|state=collapsed}}

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