Atari SM146 Documentation
Documentation for the Atari SM146 monochrome monitor. No service manual or parts list has been found; the schematic below is the only document.
SM146 schematic
[edit | edit source]A two-page scan of the SM146 schematic diagram, headed "CMPC-146" with "Parts No. 41A32-015" (the last digits are hard to read) at the foot of the second sheet. Each sheet is half of the circuit, with numbered waveform panels below it, and the drawing carries revision dates from 20 June 1991 to 25 February 1992. The scan bears the address stamp of Michael Ruge, a service dealer in Rüsselsheim, Germany, and the handwritten note "Atari SM146".[1]
Contents
[edit | edit source]| Sheet | Contents |
|---|---|
| 1 | Sound amplifier IC501 and speaker; vertical deflection IC601 with V-HOLD and V-SIZE; switch-mode power supply (F901, line filters, bridge D901 to D904, C907, controller IC901, MOSFET Q901, transformer T901, 35 V and 12 V outputs); the input connector; waveforms 1 to 4 and 10 to 13 |
| 2 | V-LIN; video amplifier Q701 to Q703 with CONTRAST; CRT socket and spark gaps; horizontal processor IC801 with H-PHASE and H-HOLD; driver transformer T801 and output transistor Q802; flyback T802 with FOCUS, SUB-BRIGHT and BRIGHT; H-WIDTH and H-LIN coils; waveforms 5 to 9 and 14 to 18 |
What this document does not contain
[edit | edit source]- A parts list. Some capacitors have no voltage printed; see Atari SM146 Capacitor Replacement Guide.
- Adjustment procedures, fault charts or disassembly steps.
- Industry type numbers for most semiconductors, which are given as Atari part numbers (for example IC601 56A157-1, IC801 56A230-1).[1]
Pages that cite this document
[edit | edit source]- Atari SM146: hardware
- Atari SM146 Capacitor Replacement Guide: the capacitor list
Download: Atari SM146 Schematic.pdf
Related documents
[edit | edit source]The Internet Archive also holds a two-page "Atari SM144 Schematic" from the same uploader, for the GoldStar-built predecessor.[2]
References
[edit | edit source]- ↑ 1.0 1.1 Atari, SM146 schematic diagram (CMPC-146), two sheets. File:Atari SM146 Schematic.pdf; source Internet Archive item Atari_SM146_Schematic_undated.
- ↑ "Atari SM144 Schematic [undated]", Internet Archive item Atari_SM144_Schematic_undated, https://archive.org/details/Atari_SM144_Schematic_undated.