Amstrad PC 2386 Service Manual - Revision history

Josh: Link the separately hosted pages 47-48; list citing pages

2026-10-02T04:35:34Z

Link the separately hosted pages 47-48; list citing pages

← Older revision		Revision as of 05:35, 2 October 2026
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	<templatestyles src="Template:StyledTable/styles.css" />		<templatestyles src="Template:StyledTable/styles.css" />
	The '''PC2386-65 Personal Computer Service Manual''' is Amstrad plc's service manual for the PC2386. The contents list runs to page 48. The hosted scan has 46 pages and no text layer, and it ends at printed page 46: the cabinet exploded view and parts list (p. 47) and the power supply chassis schematic (p. 48) are ~~missing~~.		The '''PC2386-65 Personal Computer Service Manual''' is Amstrad plc's service manual for the PC2386. The contents list runs to page 48. The hosted scan has 46 pages and no text layer, and it ends at printed page 46. The two missing pages, the cabinet exploded view and parts list (p. 47) and the power supply chassis schematic (p. 48), are hosted separately as [[:File:Amstrad PC 2386 Service Manual pages 47-48.pdf]], taken from another scan of the manual.

	== Contents ==		== Contents ==
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	* Electrical parts list – 44, 45		* Electrical parts list – 44, 45
	* Keyboard exploded view – 46		* Keyboard exploded view – 46
	* Cabinet exploded view and parts list – 47 (~~not~~ in the ~~scan~~)		* Cabinet exploded view and parts list – 47 (in the separate file)
	* Power supply chassis schematic diagram – 48 (~~not~~ in the ~~scan~~)		* Power supply chassis schematic diagram – 48 (in the separate file)

	== What it covers ==		== What it covers ==
Line 44:		Line 44:
	== What this manual does not contain ==		== What this manual does not contain ==

	* The power supply schematic and the cabinet parts list, which are missing from this scan.		* The power supply schematic and the cabinet parts list, which are missing from this scan and hosted separately; see below.
	* Component-level data for repairing the CPU board or the drives, by Amstrad's policy.		* Component-level data for repairing the CPU board or the drives, by Amstrad's policy.
	* Any monitor sections.		* Any monitor sections.
	* Fault-finding flow charts.		* Fault-finding flow charts.
	* A text layer.		* A text layer.

			== Pages that cite this document ==

			* [[Amstrad PC2386]] · [[Amstrad PC2386 Maintenance Guide]] · [[Amstrad PC2386 Troubleshooting Guide]] · [[Amstrad PC2386 Capacitor Replacement Guide]]
			* [[Amstrad PC2286]] and its guides, for the supply parts that match the PC2286's

	== Related pages ==		== Related pages ==
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	Download: [[:File:Amstrad PC 2386 Service Manual.pdf\|Amstrad PC 2386 Service Manual.pdf]]		Download: [[:File:Amstrad PC 2386 Service Manual.pdf\|Amstrad PC 2386 Service Manual.pdf]]

			Pages 47–48: [[:File:Amstrad PC 2386 Service Manual pages 47-48.pdf\|Amstrad PC 2386 Service Manual pages 47-48.pdf]]

			<pdf> File:Amstrad PC 2386 Service Manual pages 47-48.pdf </pdf>

	[[Category:Amstrad Service Manuals]]		[[Category:Amstrad Service Manuals]]
	[[Category:Service Manuals]]		[[Category:Service Manuals]]

Josh: Scan stops at p. 46: PSU schematic and cabinet list are missing (page said it included the PSU schematic); 0.05 wait states, not zero; add alignment table and printed contents

2026-10-01T07:57:37Z

Scan stops at p. 46: PSU schematic and cabinet list are missing (page said it included the PSU schematic); 0.05 wait states, not zero; add alignment table and printed contents

← Older revision		Revision as of 08:57, 1 October 2026
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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~~.		<templatestyles src="Template:StyledTable/styles.css" />
			The '''PC2386-65 Personal Computer Service Manual''' is Amstrad plc's service manual for the PC2386. The contents list runs to page 48. The hosted scan has 46 pages and no text layer, and it ends at printed page 46: the cabinet exploded view and parts list (p. 47) and the power supply chassis schematic (p. 48) are missing.

	== Contents ==		== Contents ==

	Amstrad's ~~own~~ contents list:		Amstrad's contents list, with printed page numbers:

	* Technical specification; notes to engineers; safety tests~~; '''alignment instructions'''~~		* Technical specification, notes to engineers, safety tests – 2
	* ~~Memory~~ and FDD expansion PCBs		* Alignment instructions; memory and FDD expansion PCBs – 3
	* Main PCB top and bottom ~~views; expansion~~ board / LED PCB top and bottom ~~views; power~~ / keyboard / bug PCBs		* Main PCB top view 4 and bottom view 5
	* Interconnection diagrams~~; '''chassis~~ schematic diagrams~~'''~~		* Expansion board/LED PCB top view 6 and bottom view 7
	* Keyboard chassis schematic diagram		* Power/keyboard/bug PCBs – 8
	* ~~'''~~Electrical parts list~~'''~~		* Interconnection diagrams 9–10, 16–17, 30–31
	* Keyboard exploded view~~; cabinet~~ exploded view and parts list		* Chassis schematic diagrams 11–15, 18–29, 32–41
	* ~~'''~~Power supply chassis schematic diagram~~'''~~		* Keyboard chassis schematic diagram – 42, 43
			* Electrical parts list – 44, 45
			* Keyboard exploded view – 46
			* Cabinet exploded view and parts list – 47 (not in the scan)
			* Power supply chassis schematic diagram – 48 (not in the scan)

	== What it ~~settles~~ ==		== What it covers ==

	~~'''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.		The specification on page 2 gives an 80386 at 20 MHz with 0.05 wait states, 32-bit memory, an 80387 socket, 4 MB of parity-checked RAM, a 64K 35 ns cache, five 16-bit expansion slots, 1.4 MB floppy drives, a 65 MB hard disc option, Hercules/CGA/EGA/VGA-compatible video, built-in LIM 4.0, and MS-DOS 4.0 with Windows/386. The system unit measures 415 × 160 × 485 mm.

	~~'''Amstrad's notes to engineers set~~ the ~~repair policy,~~ and ~~they are unusually blunt~~:~~'''~~		The alignment instructions (p. 3) are for the power supply and the clocks:

	* "'''~~no component level repairs are to be carried out on Main CPU PCB~~'''. ~~After diagnosis~~ test ~~if the fault is confirmed replace CPU PCB~~."		{\| class="wikitable styled-table" style="width:80%; text-align:left;"
	* The same applies to ~~'''~~the ~~floppy and hard disc drives'''~~, ~~and any attempt to repair or replace parts within them invalidates the warranty~~.		\|+'''PC2386 alignment (p. 3)'''
	* '''"PSU &~~amp~~; ~~Monitors are subject~~ to ~~component level repairs~~.~~"'''~~		! Step !! Method
			\|-
			\| +5 V \|\| Voltmeter at test point A; set VR604 to 5.00 V ±0.05 V
			\|-
			\| +12 V \|\| Voltmeter at test point B; set VR603 to 12.00 V ±0.05 V
			\|-
			\| VCO control voltage \|\| Voltmeter at pin 6 of IC316; set TC301 to 3.5 V
			\|-
			\| Primary protection \|\| Turn VR601 anticlockwise until the protection starts to cut in, then back a little
			\|-
			\| Real-time clock \|\| Timing meter at pin 21 of IC115, 0.2 s/day setting; set TC101 to read 0.00
			\|}

	~~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.		The notes to engineers (p. 2) forbid component-level repair of the main CPU PCB, which is to be replaced once a fault is confirmed, and of the floppy and hard disc drives; "PSU & Monitors are subject to component level repairs." The safety tests are a 1.5 kV RMS flash test for 3 s, an insulation test requiring more than 4 MΩ and a mains-lead earth continuity of no more than 0.5 Ω.

	~~'''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 ==		== What this manual does not contain ==

	* ~~'''No~~ CPU board ~~component-level repair information'''~~, by Amstrad's ~~explicit instruction~~.		* The power supply schematic and the cabinet parts list, which are missing from this scan.
	* ~~'''No drive service data.'''~~		* Component-level data for repairing the CPU board or the drives, by Amstrad's policy.
	* '''No monitor sections~~''' — unlike the PC2086 manual, no display is covered here~~.		* Any monitor sections.
	* ~~'''No fault~~-~~symptom table or diagnostic flowchart~~.~~'''~~		* Fault-finding flow charts.
	* ~~'''No~~ text layer~~''', so nothing can be searched~~.		* A text layer.

	~~<pdf> File:Amstrad PC 2386 Service Manual.pdf </pdf>~~		== Related pages ==

	~~Download here:~~ [[~~:File:~~Amstrad PC ~~2386~~ Service Manual~~.pdf\|Amstrad PC 2386 Service Manual.pdf~~]]		* [[Amstrad PC 2086 Service Manual]]

	~~== Related pages ==~~		<pdf> File:Amstrad PC 2386 Service Manual.pdf </pdf>

	* [[Amstrad PC ~~2086~~ Service Manual~~]] · [[~~Amstrad PC ~~2640~~ Service Manual]]		Download: [[:File:Amstrad PC 2386 Service Manual.pdf\|Amstrad PC 2386 Service Manual.pdf]]

	[[Category:Amstrad Service Manuals]]		[[Category:Amstrad Service Manuals]]
	[[Category:Service Manuals]]		[[Category:Service Manuals]]

Josh: 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

2026-09-24T22:17:59Z

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

@@ Line 1: / Line 1: @@
 <pdf> File:Amstrad PC 2386 Service Manual.pdf </pdf>
-Official Amstrad PC 2386 Service Manual covering the Intel 80386DX-based business desktop with Paradise PVGA1A onboard VGA.
+Download here: [[:File:Amstrad PC 2386 Service Manual.pdf|Amstrad PC 2386 Service Manual.pdf]]
-Download the Amstrad PC 2386 Service Manual here: [[:File:Amstrad PC 2386 Service Manual.pdf]]
+* [[Amstrad PC 2086 Service Manual]] · [[Amstrad PC 2640 Service Manual]]
 [[Category:Amstrad Service Manuals]]

Josh: Create page for Amstrad PC 2386 Service Manual

2026-05-21T18:19:44Z

Create page for Amstrad PC 2386 Service Manual

New page

<pdf> File:Amstrad PC 2386 Service Manual.pdf </pdf>

Official Amstrad PC 2386 Service Manual covering the Intel 80386DX-based business desktop with Paradise PVGA1A onboard VGA.

Download the Amstrad PC 2386 Service Manual here: [[:File:Amstrad PC 2386 Service Manual.pdf]]

[[Category:Amstrad Service Manuals]]