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Real documentation page: contents with page numbers, the technical specification for both the daisywheel machine and the optional Canon BJ-10e, the fact that the daisywheel mechanism is documented sub-assembly by sub-assembly and the CPU across four separate schematics, the safety-test figures, and the honest gaps
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The '''PCW9512+ Personal Computer Word Processor Service Manual''' is Amstrad plc's own service manual for the PCW 9512+. 30 pages. '''No text layer''', so values must be read from the page images.
The '''''PCW9512+ Personal Computer Word Processor Service Manual''''' is Amstrad plc's service manual for the PCW 9512+. It has 35 numbered pages and is undated with no part number. This scan has 30 PDF pages, because several drawings are printed as two-page spreads, and no text layer.


== Contents ==
== Contents ==
 
Amstrad's contents list, with printed page numbers:
Amstrad's own contents list, with printed page numbers:
* Technical specification, p. 2; safety tests, p. 2
 
* Alignment instructions, p. 3
* '''Technical specification''' — 2; safety tests — 2
* Monitor exploded view and parts list, pp. 4-5
* '''Alignment instructions''' — 3
* Printer exploded view and parts list, p. 6
* Monitor exploded view and parts list — 4 & 5
* Keyboard PCB, exploded view and parts list, p. 7
* Printer exploded view and parts list — 6
* Paper feed exploded view and parts list, p. 8
* Keyboard PCB, exploded view and parts list — 7
* Tractor exploded view and parts list, p. 9
* Paper feed exploded view and parts list — 8; tractor — 9; paper end sensor — 10; carrier frame — 11
* Paper end sensor exploded view and parts list, p. 10
* '''Print head and hammer drive exploded view and parts list''' — 12
* Carrier frame exploded view and parts list, p. 11
* Ribbon drive exploded view and parts list — 13; wheel set release — 14; ribbon cassette base — 14
* Print head and hammer drive exploded view and parts list, p. 12
* Chassis and carrier drive exploded view and parts list — 15
* Ribbon drive exploded view and parts list, p. 13
* Monitor/CRT PCB — 18 & 19
* Wheel set release exploded view and parts list, p. 14; ribbon cassette base exploded view and parts list, p. 14
* Printer / cover / open PCB, top and bottom views — 20
* Chassis and carrier drive exploded view and parts list, p. 15
* '''Printer schematic diagram''' — 21
* Main PCB, top view, p. 16; bottom view, p. 17
* '''Keyboard schematic diagram''' — 22 & 23
* Monitor/CRT PCB, pp. 18-19
* '''Printer motor driver schematic diagram''' — 24
* Printer/cover/open PCB, top and bottom views, p. 20
* '''CPU schematic diagram''' — 25; '''CPU-A''' — 26; '''CPU-B''' — 27; '''CPU-C''' — 28 & 29
* Printer control schematic diagram, p. 21
* '''Monitor 1 schematic diagram''' — 30 & 31; '''Monitor 2''' — 32 & 33
* Keyboard schematic diagram, pp. 22-23
* '''Electrical parts list''' — 34 & 35
* Printer motor driver schematic diagram, p. 24
* CPU schematic diagram, p. 25; CPU-A, p. 26; CPU-B, p. 27; CPU-C, pp. 28-29
* Monitor 1 schematic diagram, pp. 30-31; monitor 2, pp. 32-33
* Electrical parts list, pp. 34-35


== What it settles ==
== What it settles ==
=== Specification (p. 2) ===
The PCW9512+ has 512K of RAM, one 3.5-inch 720K drive with provision for a second, a paper-white 12-inch monochrome screen showing 90 columns by 32 lines, a full-size PC-style 82-key keyboard with adjustable legs, and a parallel printer port. It came with LocoScript 2, Locomail, Locospell, CP/M Plus, Mallard BASIC, GSX and Dr Logo. The daisywheel printer prints bi-directionally at 20 cps on a 15-inch carriage, loads paper automatically by bail bar action, takes daisywheels in 10, 12 and 15 cpi, and comes with a 30-sheet automatic sheet feeder and a removable tractor feed.


'''Technical specification''':
The same page specifies the Canon BJ-10e bubble jet printer: 83, 100 and 142 cps at 10, 12 and 17 cpi; 360 × 360 dpi in high quality and 180 × 360 in draft; 52-90 g/m² paper through the sheet feeder or 52-105 g/m² by hand; Courier and Prestige Elite typefaces; a 64-nozzle head; IBM Proprinter X24E emulation; a Centronics interface; 310 × 216 × 48 mm and about 1.8 kg; and a 240 V 50 Hz 25 W AC adaptor of about 0.6 kg, with an optional NiCd battery pack.


* '''512K RAM'''; one 3.5-inch 720K drive with the facility to add a second
The safety tests are a 4 kV flash test between the joined mains live and neutral and all accessible exterior metal, and an insulation test requiring at least 4 MΩ.
* '''Paper-white 12-inch monochrome screen showing 90 columns × 32 lines'''
* Full-size PC-style keyboard, '''82 keys, with adjustable legs'''
* Software: LocoScript 2, Locomail, Locospell, CP/M Plus, Mallard BASIC, GSX and Dr Logo
* External connector: parallel printer port
* '''Daisywheel printer''': bi-directional printing at '''20 cps'''; automatic paper loading by bail bar action; daisywheels in 10, 12 and 15 cpi; a 30-sheet automatic sheet feeder and a removable tractor feed supplied as standard


The manual also specifies the '''Canon BJ-10e bubble jet printer''' as an option: 83 cps at 10 cpi, 100 cps at 12 cpi and 142 cps at 17 cpi in draft; 360 × 360 dpi high quality and 180 × 360 dpi draft; paper 52–90 gsm through the auto sheet feeder or 52–105 gsm manually; Courier and Prestige Elite typefaces; a '''64-nozzle''' head; IBM Proprinter X24E emulation; Centronics interface; 310 × 216 × 48 mm and about 1.8 kg, with an AC adaptor of about 0.6 kg supplying '''AC 240 V 50 Hz, 25 W''', and an optional NiCd battery pack.
=== Alignment (p. 3) ===
The supply is checked at connector A with CP102 disconnected and electronic loads of 1.8 A on 5 V and 1.2 A each on 12 V and 24 V (Fig. 2-1). The 24 V output should be within 1.2 V; 12 V is set with VR5002 to ±0.01 V and 5 V with VR5001 to ±0.05 V. The chart then covers vertical size (VR4002, VR4003), linearity, horizontal hold at 15.625 kHz (VR4005), sub-brightness (VR4006) and the printer hammer current, set with VR701 until the pulse waveform is 2.4 V. The equipment list is a digital voltmeter, oscilloscope, frequency counter, test pattern generator, and the RP6 or a pattern disc.


'''The daisywheel mechanism is documented part by part''' — paper feed, tractor, paper end sensor, carrier frame, print head and hammer drive, ribbon drive, wheel set release, ribbon cassette base, and chassis and carrier drive each have their own exploded view and parts list. This is the most thoroughly documented printer mechanism in the Amstrad material hosted here.
=== The daisywheel mechanism (pp. 6-15) ===
The printer is broken down into separate exploded views and parts lists for the paper feed, tractor, paper end sensor, carrier frame, print head and hammer drive, ribbon drive, wheel set release, ribbon cassette base, and chassis and carrier drive.


'''The CPU board is split across four schematics''' — CPU, CPU-A, CPU-B and CPU-C — and the monitor across two. Trace a fault to the right sheet before chasing signals.
=== Electrical parts list (pp. 34-35) ===
 
Selected entries:
'''Safety test figures''': flash test at '''4 kV''' between the mains live and neutral joined together and all accessible exterior metal; insulation resistance showing '''at least 4 MΩ'''.
* IC126 AMS40028, 171031; IC201 Z765APS floppy controller, 40018; IC701 AMS40088, 40088; IC801 AMS40027, 171043; IC106 AMS40087; IC107 AMS40120
* IC110-117 µPD41256C-15 and IC118-125 µPD41257C-15 DRAMs
* The processor is listed as "IC501 IC X8400APS", part 40080, the part number the PCW8256 and PCW9256 manuals give for the Z8400AP(S)
* F5001 mains fuse 3.15 A time-lag, 250 V, 171621
* FDD101 floppy disk drive U0DC-45A, 272508
* V8001 cathode ray tube MN1416H22AU, 272637
* PRT701 printer mechanism AP620/017-032, 177012; PRT702 ribbon cassette 620-75006, 177161; PRT703 tractor 620-83005, 177018; PRT704 daisywheel D43-017032N
* X101 crystal 32.00 MHz, 171063


== What this manual does not contain ==
== What this manual does not contain ==
There is no floppy drive service section, no flow chart and no fault-finding procedure. There is no memory map or I/O port list; for those see [[Amstrad PCW Hardware Reference (John Elliott)]]. The manual covers the PCW9512+ only, not the earlier PCW 9512.


* '''No floppy drive alignment or service data.'''
<pdf> File:Amstrad PCW 9512 Plus Service Manual.pdf </pdf>
* '''No fault-symptom table and no diagnostic flowchart.'''
* '''No memory map or port list.''' For those see [[Amstrad PCW Hardware Reference (John Elliott)]].
* '''No coverage of the PCW 9512''' (without the plus) or of the 8000-series machines.
* '''No text layer''', so nothing can be searched.


<pdf> File:Amstrad PCW 9512 Plus Service Manual.pdf </pdf>
Download: [[:File:Amstrad PCW 9512 Plus Service Manual.pdf|Amstrad PCW 9512 Plus Service Manual.pdf]]


Download here: [[:File:Amstrad PCW 9512 Plus Service Manual.pdf|Amstrad PCW 9512 Plus Service Manual.pdf]]
== Pages that cite this document ==
* [[Amstrad PCW 9512+]] · [[Amstrad PCW 9512+ Maintenance Guide]] · [[Amstrad PCW 9512+ Troubleshooting Guide]] · [[Amstrad PCW 9512+ Capacitor Replacement Guide]]: specification, safety tests, alignment chart, printer sub-assembly parts lists, board layouts and the electrical parts list (pp. 2–3, 12, 15–18, 34–35)
* [[Amstrad PCW 9512]], [[Amstrad PCW 9512 Maintenance Guide]]: the later model's specification and alignment, for comparison


== Related pages ==
== Related pages ==
* [[Amstrad PCW 10]], which cites this document
* [[Amstrad PCW 9256 Service Manual]]
* [[Amstrad PCW 8256 / PCW 8512 Service Manual]]
* [[Amstrad PCW Hardware Reference (John Elliott)]]


* [[Amstrad PCW 9256 Service Manual]] · [[Amstrad PCW 8256 / PCW 8512 Service Manual]] · [[Amstrad PCW Hardware Reference (John Elliott)]]
{{Navbox-Amstrad|state=collapsed}}


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

Latest revision as of 07:10, 2 October 2026

The PCW9512+ Personal Computer Word Processor Service Manual is Amstrad plc's service manual for the PCW 9512+. It has 35 numbered pages and is undated with no part number. This scan has 30 PDF pages, because several drawings are printed as two-page spreads, and no text layer.

Contents

[edit | edit source]

Amstrad's contents list, with printed page numbers:

  • Technical specification, p. 2; safety tests, p. 2
  • Alignment instructions, p. 3
  • Monitor exploded view and parts list, pp. 4-5
  • Printer exploded view and parts list, p. 6
  • Keyboard PCB, exploded view and parts list, p. 7
  • Paper feed exploded view and parts list, p. 8
  • Tractor exploded view and parts list, p. 9
  • Paper end sensor exploded view and parts list, p. 10
  • Carrier frame exploded view and parts list, p. 11
  • Print head and hammer drive exploded view and parts list, p. 12
  • Ribbon drive exploded view and parts list, p. 13
  • Wheel set release exploded view and parts list, p. 14; ribbon cassette base exploded view and parts list, p. 14
  • Chassis and carrier drive exploded view and parts list, p. 15
  • Main PCB, top view, p. 16; bottom view, p. 17
  • Monitor/CRT PCB, pp. 18-19
  • Printer/cover/open PCB, top and bottom views, p. 20
  • Printer control schematic diagram, p. 21
  • Keyboard schematic diagram, pp. 22-23
  • Printer motor driver schematic diagram, p. 24
  • CPU schematic diagram, p. 25; CPU-A, p. 26; CPU-B, p. 27; CPU-C, pp. 28-29
  • Monitor 1 schematic diagram, pp. 30-31; monitor 2, pp. 32-33
  • Electrical parts list, pp. 34-35

What it settles

[edit | edit source]

Specification (p. 2)

[edit | edit source]

The PCW9512+ has 512K of RAM, one 3.5-inch 720K drive with provision for a second, a paper-white 12-inch monochrome screen showing 90 columns by 32 lines, a full-size PC-style 82-key keyboard with adjustable legs, and a parallel printer port. It came with LocoScript 2, Locomail, Locospell, CP/M Plus, Mallard BASIC, GSX and Dr Logo. The daisywheel printer prints bi-directionally at 20 cps on a 15-inch carriage, loads paper automatically by bail bar action, takes daisywheels in 10, 12 and 15 cpi, and comes with a 30-sheet automatic sheet feeder and a removable tractor feed.

The same page specifies the Canon BJ-10e bubble jet printer: 83, 100 and 142 cps at 10, 12 and 17 cpi; 360 × 360 dpi in high quality and 180 × 360 in draft; 52-90 g/m² paper through the sheet feeder or 52-105 g/m² by hand; Courier and Prestige Elite typefaces; a 64-nozzle head; IBM Proprinter X24E emulation; a Centronics interface; 310 × 216 × 48 mm and about 1.8 kg; and a 240 V 50 Hz 25 W AC adaptor of about 0.6 kg, with an optional NiCd battery pack.

The safety tests are a 4 kV flash test between the joined mains live and neutral and all accessible exterior metal, and an insulation test requiring at least 4 MΩ.

Alignment (p. 3)

[edit | edit source]

The supply is checked at connector A with CP102 disconnected and electronic loads of 1.8 A on 5 V and 1.2 A each on 12 V and 24 V (Fig. 2-1). The 24 V output should be within 1.2 V; 12 V is set with VR5002 to ±0.01 V and 5 V with VR5001 to ±0.05 V. The chart then covers vertical size (VR4002, VR4003), linearity, horizontal hold at 15.625 kHz (VR4005), sub-brightness (VR4006) and the printer hammer current, set with VR701 until the pulse waveform is 2.4 V. The equipment list is a digital voltmeter, oscilloscope, frequency counter, test pattern generator, and the RP6 or a pattern disc.

The daisywheel mechanism (pp. 6-15)

[edit | edit source]

The printer is broken down into separate exploded views and parts lists for the paper feed, tractor, paper end sensor, carrier frame, print head and hammer drive, ribbon drive, wheel set release, ribbon cassette base, and chassis and carrier drive.

Electrical parts list (pp. 34-35)

[edit | edit source]

Selected entries:

  • IC126 AMS40028, 171031; IC201 Z765APS floppy controller, 40018; IC701 AMS40088, 40088; IC801 AMS40027, 171043; IC106 AMS40087; IC107 AMS40120
  • IC110-117 µPD41256C-15 and IC118-125 µPD41257C-15 DRAMs
  • The processor is listed as "IC501 IC X8400APS", part 40080, the part number the PCW8256 and PCW9256 manuals give for the Z8400AP(S)
  • F5001 mains fuse 3.15 A time-lag, 250 V, 171621
  • FDD101 floppy disk drive U0DC-45A, 272508
  • V8001 cathode ray tube MN1416H22AU, 272637
  • PRT701 printer mechanism AP620/017-032, 177012; PRT702 ribbon cassette 620-75006, 177161; PRT703 tractor 620-83005, 177018; PRT704 daisywheel D43-017032N
  • X101 crystal 32.00 MHz, 171063

What this manual does not contain

[edit | edit source]

There is no floppy drive service section, no flow chart and no fault-finding procedure. There is no memory map or I/O port list; for those see Amstrad PCW Hardware Reference (John Elliott). The manual covers the PCW9512+ only, not the earlier PCW 9512.

Download: Amstrad PCW 9512 Plus Service Manual.pdf

Pages that cite this document

[edit | edit source]
[edit | edit source]


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