Editing PET Shack Service Bundle

The '''PET-Shack service bundle''' is a 37-page compilation of [[Commodore PET 2001]] service material assembled and sold by '''P.S. Software House / Marketing and Research Co. ("PET-SHACK"), P.O. Box 966, Mishawaka, Indiana''', over the signature of its president Larry R. Shallenberger.

'''It is not a Commodore document.''' It is a third-party bundle, and what makes it worth having is that it collects things Commodore's own PET 2001 documentation does not: an errata sheet against the published schematics, and the data sheets for the chips the machine is built from.

The scan carries no text layer.

== What is in the bundle ==

<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table" style="width:100%; text-align:left;"
! Pages !! Content
|-
| 1 || PET-Shack covering letter
|-
| 2 || '''"ERRATA: Corrections and Differences for the PET schematics"''' — PET-Shack's own corrections against the published drawings
|-
| 3 || PET-Shack note on '''ROM and RAM chips''' — substitutions and differences
|-
| 4 || '''Power supply and video monitor''' circuit, showing the 16.2 V AC feed to the video monitor
|-
| 5–10 || '''Cassette deck''' circuit sheets — record/play, with component values marked (R4 470 k, R2 75 k, R5 3.3 k and so on) and the J5 connector pinout
|-
| 11–15 || '''MOS Technology 6550''' static RAM data sheet — 4K bit, 1024 × 4, with maximum ratings and timing
|-
| 16–19 || '''Synertek''' 2114-type RAM and 2316/2332-type ROM data sheets — 300 ns access, 2048 × 8 organisation
|-
| 20–21 || '''Texas Instruments SN54/74LS138 and LS139''' decoder/demultiplexer data sheet
|-
| 22–23 || '''Motorola MC3446''' quad general-purpose interface bus transceiver data sheet
|-
| 24–29 || '''Synertek SY6500''' microprocessor, '''SY6520''' peripheral interface adapter and '''SY6522''' versatile interface adapter data sheets
|-
| 30–33 || '''TI SN54/74LS240, LS241, LS244''' octal buffers; '''SN54/74100'''; '''SN54/74157, LS158''' quad 2-line-to-1-line data selectors
|-
| 34–37 || Further PET circuit sheets, including a '''capacitors''' sheet, the '''0.0047 µF 1 kV''' high-voltage part, and the supply section with '''TIP29 (NPN) and TIP30 (PNP)''' pass transistors and the +16 V rail
|}

== What this bundle settles ==

* '''The PET's IEEE-488 bus transceivers are MC3446s''', and the bundle carries the full Motorola data sheet for them — the device most likely to be damaged by hot-plugging a disk drive, and the one Commodore's parts list names without describing.
* '''The cassette deck has its own circuit''', with values, which the Commodore PET 2001 documentation on this wiki does not cover.
* '''A 0.0047 µF 1 kV capacitor exists in the machine.''' Any PET capacitor list that gives every part a low voltage rating is missing this one.
* '''TIP29 and TIP30''' are the supply pass transistors — a complementary pair, easy to fit the wrong way round.

== What this bundle does not contain ==

* '''It is not authoritative for Commodore part numbers or values.''' Where it disagrees with Commodore's own [[Commodore PET 2001 Service Documentation|parts lists and schematics]], those are the primary source and this is a secondary one. The errata sheet is one collector's corrections, not a Commodore ECO.
* '''No complete board parts list''' and no board layout.
* '''No text layer''', so nothing in it is searchable.
* The data sheets are generic manufacturer documents, not PET-specific.

== Related pages ==

* [[Commodore PET 2001]] &middot; [[Commodore PET 2001 Service Documentation]] &middot; [[Commodore PET 2001 Capacitor Replacement Guide]] &middot; [[Commodore PET 2001 General Maintenance]]

<pdf> File:PET-Shack PET 2001 Bundle.pdf </pdf>

Download: [[:File:PET-Shack PET 2001 Bundle.pdf|PET-Shack PET 2001 Bundle.pdf]]

[[Category:Commodore PET 2001 Schematics]]
[[Category:Commodore Documentation]]