Amstrad PCW 8256 / PCW 8512 Service Manual - Revision history

Josh: Add the pages that cite this document

2026-10-02T06:10:05Z

Add the pages that cite this document

← Older revision		Revision as of 07:10, 2 October 2026
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	Download: [[:File:Amstrad PCW 8000 Series Service Manual.pdf\|Amstrad PCW 8000 Series Service Manual.pdf]]		Download: [[:File:Amstrad PCW 8000 Series Service Manual.pdf\|Amstrad PCW 8000 Series Service Manual.pdf]]

			== Pages that cite this document ==
			* [[Amstrad PCW 8256]] · [[Amstrad PCW 8256 Maintenance Guide]] · [[Amstrad PCW 8256 Troubleshooting Guide]] · [[Amstrad PCW 8256 Capacitor Replacement Guide]]: specification, safety tests, drive procedures and alignment, monitor and supply alignment, parts lists and the memory table (pp. 2–17, 23, 30, 33–34)
			* [[Amstrad PCW 8512]] · [[Amstrad PCW 8512 Maintenance Guide]] · [[Amstrad PCW 8512 Troubleshooting Guide]]: the PCW8512 differences, drive B (FD2) figures and the FD2 seek error chart (pp. 2, 5–14, 23, 34)
			* [[Amstrad PCW 9256]], [[Amstrad PCW 9256 Maintenance Guide]], [[Amstrad PCW 9512+ Capacitor Replacement Guide]]: shared part numbers and the dot matrix printer mechanism parts list

	== Related pages ==		== Related pages ==

Josh: Merge the duplicate page for the 42-page scan: embed that scan (it adds the chassis and printer sheets), add its PDF page map and memory options table; note the Mastercare sheet in the 34-page scan

2026-10-01T18:16:46Z

Merge the duplicate page for the 42-page scan: embed that scan (it adds the chassis and printer sheets), add its PDF page map and memory options table; note the Mastercare sheet in the 34-page scan

← Older revision		Revision as of 19:16, 1 October 2026
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	The '''''PCW 8256/8512 Personal Computer Word Processor Service Manual''''' is Amstrad Consumer Electronics plc's service manual for the PCW 8256 and PCW 8512, with a cover price of £8.00. It is undated and has no contents page or part number. ~~This~~ scan has 34 PDF pages and no text layer.		<templatestyles src="Template:StyledTable/styles.css" />
			The '''''PCW 8256/8512 Personal Computer Word Processor Service Manual''''' is Amstrad Consumer Electronics plc's service manual for the PCW 8256 and PCW 8512, with a cover price of £8.00. It is undated and has no contents page or part number. The hosted scan has 42 PDF pages and the Internet Archive's OCR text layer: the 34 numbered pages, three chassis schematic sheets, three printer circuit diagram sheets and a repeat of the notes to service engineers. Amstrad published no separate "PCW 8000 Series" manual; the file name comes from the Internet Archive item.
	~~The same manual is also hosted as [[~~Amstrad PCW 8000 Series ~~Service Manual]], a 42-page scan with an OCR text layer. The two scans hold different extra pages~~; ~~see [[#The two scans\|below]]~~.

	== Contents ==		== Contents ==
	The manual has no contents list. Its pages, with the printed page numbers (PDF pages ~~of this scan~~ in brackets where they differ):		The manual has no contents list. Its pages, with the printed page numbers (PDF pages in brackets where they differ):
	* 1 cover; 2 safety test and specification; 3 important notes to service engineers; 4 software errors		* 1 cover; 2 safety test and specification; 3 important notes to service engineers; 4 software errors
	* 5-9 diagnostic flow charts for drives FD1 and FD2: motor rotation, read error, write error, and seek error (FD2 only)		* 5-9 diagnostic flow charts for drives FD1 and FD2: motor rotation, read error, write error, and seek error (FD2 only)
Line 11:		Line 10:
	* 15 FD1 schematic diagram; 16 FD2 schematic diagram		* 15 FD1 schematic diagram; 16 FD2 schematic diagram
	* 17 alignment chart for the monitor		* 17 alignment chart for the monitor
	* 18-19 monitor schematic diagram (PDF 18, ~~one image~~)		* 18-19 monitor schematic diagram (PDF 18-20, split across three images)
	* 20 monitor PCB, marked "danger mains voltage" (PDF 19); 21 monitor PCB component layout (PDF 20)		* 20 monitor PCB, marked "danger mains voltage" (PDF 21); 21 monitor PCB component layout (PDF 22)
	* 22-23 mechanical exploded view, cabinet exploded view and cabinet parts list (PDF 21-22)		* 22-23 mechanical exploded view, cabinet exploded view and cabinet parts list (PDF 23-24)
	* 24 keyboard circuit diagram; 25 keyboard control PCB with the key matrix (PDF 23-24)		* 24 keyboard circuit diagram; 25 keyboard control PCB with the key matrix (PDF 25-26)
	* 26-27 CPU PCB; 28-29 CPU PCB Mk II (PDF 25-28)		* 26-27 CPU PCB; 28-29 CPU PCB Mk II (PDF 27-30)
	* 30 PCW8256 printer mechanical parts list; 31 printer exploded drawing; 32 printer PC board (PDF 29-31)		* 30 PCW8256 printer mechanical parts list; 31 printer exploded drawing; 32 printer PC board (PDF 31-33)
	* 33 monitor/keyboard electrical parts list; 34 electrical parts list (PDF 32-33)		* 33 monitor/keyboard electrical parts list; 34 electrical parts list (PDF 34-35)
	* ~~"Fitting 4 pin CPU PCB in PCW8256 / PCW8512"~~ (PDF 34), a ~~typed sheet signed P.S. Wright, Mastercare PC+, added~~ to ~~this copy~~		* Unnumbered: three chassis schematic sheets (PDF 36-38), three printer circuit diagram sheets (PDF 39-41) and a repeat of the notes to service engineers (PDF 42)

	== What it settles ==		== What it settles ==
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	The cabinet parts list gives separate PCW8256 and PCW8512 part numbers. It lists the CRT as a 340AXB31 (171020) and, for the PCW8512 only, a compact floppy disc drive EME-231 (171224). The electrical parts list gives the main chips: Z8400AP processor (IC102), Amstrad 40028 (IC101), µPD765AC-2 floppy controller (IC203), Amstrad 40026 printer controller (IC701) and Amstrad 40027 keyboard controller (IC801), with eight TMM41257P-15 DRAMs for the 256K machine. The mains fuse F5001 is 2 A time-lag, 250 V (1400253). In the printer mechanical parts list, starred parts are for the PCW8512 only.		The cabinet parts list gives separate PCW8256 and PCW8512 part numbers. It lists the CRT as a 340AXB31 (171020) and, for the PCW8512 only, a compact floppy disc drive EME-231 (171224). The electrical parts list gives the main chips: Z8400AP processor (IC102), Amstrad 40028 (IC101), µPD765AC-2 floppy controller (IC203), Amstrad 40026 printer controller (IC701) and Amstrad 40027 keyboard controller (IC801), with eight TMM41257P-15 DRAMs for the 256K machine. The mains fuse F5001 is 2 A time-lag, 250 V (1400253). In the printer mechanical parts list, starred parts are for the PCW8512 only.

	=== ~~The 4-pin CPU board sheet~~ ===		=== Memory options (chassis schematic, PDF p. 36) ===
	The ~~Mastercare~~ sheet at the ~~end of this scan explains how to fit a replacement~~ CPU board ~~with a 4~~-~~pin power header~~: ~~the 5~~-~~way monitor power connector is cut into a 3~~-~~way and a 2~~-~~way part, the 3~~-~~way part fitted with~~ the ~~yellow wire nearest~~ the ~~piezo buzzer, and~~ the ~~2-way part fitted by its black wire pin, leaving~~ the ~~brown wire unconnected~~.		The first chassis sheet carries Amstrad's memory options table for the CPU board:

			{\| class="wikitable styled-table" style="width:70%; text-align:center;"
			\|+'''Memory options (chassis schematic, PDF p. 36)'''
			! Memory (K) !! DRAM size (K) !! Link A !! Link B !! Link C !! Link D !! ICs fitted !! Quantity
			\|-
			\| 512 \|\| 256 \|\| off \|\| on \|\| off \|\| on \|\| IC104-119 \|\| 16
			\|-
			\| 256 \|\| 256 \|\| on \|\| off \|\| off \|\| on \|\| IC104-111 \|\| 8
			\|-
			\| 128 \|\| 64 \|\| off \|\| on \|\| on \|\| off \|\| IC104-119 \|\| 16
			\|-
			\| 128 \|\| 256 \|\| on \|\| off \|\| on \|\| off \|\| IC104-107 \|\| 4
			\|}

			The other chassis sheets cover the CPU board logic, including the printer control section around the Amstrad 40026 (IC701). The printer circuit diagrams include the 24 V power connections.

	== ~~The two scans~~ ==		=== Another scan ===
	~~Both scans have the same 34 numbered pages. Beyond them:~~		A 34-page scan of the manual (Internet Archive item [https://archive.org/details/amstrad-pcw-8256-pcw-8512-service-manual amstrad-pcw-8256-pcw-8512-service-manual]) lacks the chassis and printer sheets but has one extra page: a typed Mastercare sheet signed P.S. Wright, Mastercare PC+, "Fitting 4 pin CPU PCB in PCW8256 / PCW8512". It explains how to fit a replacement CPU board with a 4-pin power header: the 5-way monitor power connector is cut into a 3-way and a 2-way part, the 3-way part fitted with the yellow wire nearest the piezo buzzer, and the 2-way part fitted by its black wire pin, leaving the brown wire unconnected. The sheet is not part of Amstrad's manual.
	* This 34-page scan has ~~the~~ Mastercare sheet ~~on fitting~~ a 4-pin ~~CPU board.~~
	* The [[Amstrad PCW 8000 Series Service Manual\|42-~~page scan]] has three chassis schematic sheets~~, ~~including~~ the ~~memory options table for 128K~~, ~~256K and 512K boards~~ and the ~~printer control section around IC701~~, ~~three printer circuit diagram sheets, and a repeat of~~ the ~~notes to service engineers~~. ~~It also has an OCR text layer~~.

	== What this manual does not contain ==		== What this manual does not contain ==
	There is no fault-finding procedure for the computer itself; the flow charts cover the drives, and the notes refer the engineer to the R.P.3 diagnostic tool. There is no memory map or I/O port list; for those see [[Amstrad PCW Hardware Reference (John Elliott)]]. The PCW 9256, 9512 and 9512+ have separate manuals.		There is no fault-finding procedure for the computer itself; the flow charts cover the drives, and the notes refer the engineer to the R.P.3 diagnostic tool. There is no memory map or I/O port list; for those see [[Amstrad PCW Hardware Reference (John Elliott)]]. The PCW 9256, 9512 and 9512+ have separate manuals.

	<pdf> File:Amstrad PCW ~~8256 PCW 8512~~ Service Manual.pdf </pdf>		<pdf> File:Amstrad PCW 8000 Series Service Manual.pdf </pdf>

	Download: [[:File:Amstrad PCW ~~8256 PCW 8512~~ Service Manual.pdf\|Amstrad PCW ~~8256 PCW 8512~~ Service Manual.pdf]]		Download: [[:File:Amstrad PCW 8000 Series Service Manual.pdf\|Amstrad PCW 8000 Series Service Manual.pdf]]

	== Related pages ==		== Related pages ==
	* [[Amstrad PCW 8000 Series Service Manual]], the 42-page scan of this manual
	* [[Amstrad PCW 9256 Service Manual]]		* [[Amstrad PCW 9256 Service Manual]]
	* [[Amstrad PCW 9512+ Service Manual]]		* [[Amstrad PCW 9512+ Service Manual]]

Josh: Rewrite from the manual: page list, service notes, monitor/supply alignment, parts (F5001 2 A T, CRT, chips); 4-pin sheet is Mastercare's, not Amstrad's; correct scan comparison (cabinet parts list is in both)

2026-10-01T07:50:54Z

Rewrite from the manual: page list, service notes, monitor/supply alignment, parts (F5001 2 A T, CRT, chips); 4-pin sheet is Mastercare's, not Amstrad's; correct scan comparison (cabinet parts list is in both)

Show changes

Josh: Real documentation page: page-by-page contents read from the scan, the two CPU board versions plus the 4-pin CPU PCB fitting page, the cabinet parts list with separate 8256/8512 part numbers, the DANGER MAINS VOLTAGE marking on the monitor board (which carries the PCW's supply), and a checked statement of which content this scan holds that the other does not and vice versa

2026-09-24T22:19:57Z

Real documentation page: page-by-page contents read from the scan, the two CPU board versions plus the 4-pin CPU PCB fitting page, the cabinet parts list with separate 8256/8512 part numbers, the DANGER MAINS VOLTAGE marking on the monitor board (which carries the PCW's supply), and a checked statement of which content this scan holds that the other does not and vice versa

@@ Line 1: / Line 1: @@
 <pdf> File:Amstrad PCW 8256 PCW 8512 Service Manual.pdf </pdf>
-Official Amstrad PCW 8256 and PCW 8512 Service Manual covering the Z80-based all-in-one word processor with integrated 3-inch floppy drives.
+Download here: [[:File:Amstrad PCW 8256 PCW 8512 Service Manual.pdf|Amstrad PCW 8256 PCW 8512 Service Manual.pdf]]
-Download the Amstrad PCW 8256 / PCW 8512 Service Manual here: [[:File:Amstrad PCW 8256 PCW 8512 Service Manual.pdf]]
+* [[Amstrad PCW 8000 Series Service Manual]] — the same manual, 42-page scan, with the chassis and printer schematics this one lacks
 [[Category:Amstrad Service Manuals]]

Josh: Create wiki page for Amstrad PCW 8256 / PCW 8512 Service Manual (PDF download)

2026-05-21T18:18:28Z

Create wiki page for Amstrad PCW 8256 / PCW 8512 Service Manual (PDF download)

New page

<pdf> File:Amstrad PCW 8256 PCW 8512 Service Manual.pdf </pdf>

Official Amstrad PCW 8256 and PCW 8512 Service Manual covering the Z80-based all-in-one word processor with integrated 3-inch floppy drives.

Download the Amstrad PCW 8256 / PCW 8512 Service Manual here: [[:File:Amstrad PCW 8256 PCW 8512 Service Manual.pdf]]

[[Category:Amstrad Service Manuals]]