Amstrad PC 2386 Service Manual: Difference between revisions
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Real documentation page: cover title PC2386-65, contents, the full technical specification (20 MHz 80386, 64K/35 ns cache, five 16-bit slots, 65 MB 1:1 hard disc), the safety-test figures, and - most useful - Amstrad's own notes to engineers, which forbid component-level repair of the CPU PCB and the drives while explicitly permitting it on the PSU and monitors, which is why a PSU schematic is included |
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The '''PC2386-65 Personal Computer Service Manual''' is Amstrad's own service manual for the PC2386. 46 pages. '''No text layer''', so values must be read from the page images. | |||
== Contents == | |||
Amstrad's own contents list: | |||
* Technical specification; notes to engineers; safety tests; '''alignment instructions''' | |||
* Memory and FDD expansion PCBs | |||
* Main PCB top and bottom views; expansion board / LED PCB top and bottom views; power / keyboard / bug PCBs | |||
* Interconnection diagrams; '''chassis schematic diagrams''' | |||
* Keyboard chassis schematic diagram | |||
* '''Electrical parts list''' | |||
* Keyboard exploded view; cabinet exploded view and parts list | |||
* '''Power supply chassis schematic diagram''' | |||
== What it settles == | |||
'''Technical specification''': '''80386 at 20 MHz''', zero wait states, '''32-bit full-width main memory''', 80387 socket, '''4 MB of parity-checked RAM''', a '''64K / 35 ns RAM cache''', '''five 16-bit expansion slots''', asynchronous bus operation, a 65 MB hard disc option at 1:1 interleave, 1.4 MB floppy drives, connectors for an external 5.25-inch or 3.5-inch drive and a tape streamer, Hercules/CGA/EGA/VGA compatible video, a bi-directional parallel printer port, an RS232 serial port, battery-backed clock and configuration RAM, a Microsoft-compatible mouse, a 101/102-key AT keyboard with a security lock, a speaker volume control, built-in LIM 4.0 with a RAM division option between conventional, extended and LIM, and Novell NetWare server compatibility. System unit 415 × 160 × 485 mm; keyboard 475 × 35 × 200 mm. | |||
'''Amstrad's notes to engineers set the repair policy, and they are unusually blunt:''' | |||
* "'''no component level repairs are to be carried out on Main CPU PCB'''. After diagnosis test if the fault is confirmed replace CPU PCB." | |||
* The same applies to '''the floppy and hard disc drives''', and any attempt to repair or replace parts within them invalidates the warranty. | |||
* '''"PSU & Monitors are subject to component level repairs."''' | |||
That last sentence is why this manual includes a '''power supply chassis schematic diagram''' but treats the mainboard as an exchange unit. It is also a caution for anyone reading the electrical parts list: Amstrad expected it to be used for the supply and the peripherals, not for board-level repair of the CPU PCB. | |||
'''Safety test figures''': flash test at '''1.5 kV RMS for 3 s''' between mains live/neutral and all accessible exterior metal; insulation resistance at the same voltage showing '''greater than 4 MΩ'''; and '''earth continuity of the mains lead not exceeding 0.5 Ω'''. | |||
== What this manual does not contain == | |||
* '''No CPU board component-level repair information''', by Amstrad's explicit instruction. | |||
* '''No drive service data.''' | |||
* '''No monitor sections''' — unlike the PC2086 manual, no display is covered here. | |||
* '''No fault-symptom table or diagnostic flowchart.''' | |||
* '''No text layer''', so nothing can be searched. | |||
<pdf> File:Amstrad PC 2386 Service Manual.pdf </pdf> | <pdf> File:Amstrad PC 2386 Service Manual.pdf </pdf> | ||
Download here: [[:File:Amstrad PC 2386 Service Manual.pdf|Amstrad PC 2386 Service Manual.pdf]] | |||
== Related pages == | |||
* [[Amstrad PC 2086 Service Manual]] · [[Amstrad PC 2640 Service Manual]] | |||
[[Category:Amstrad Service Manuals]] | [[Category:Amstrad Service Manuals]] | ||
[[Category:Service Manuals]] | |||