Amstrad PPC 512 / PPC 640 Service Manual: Difference between revisions
Create page for Amstrad PPC 512 / PPC 640 Service Manual |
Real documentation page: contents with page numbers, the full technical specification (10 alkaline C cells for up to 8 hours, 640x200 supertwist LCD, integral V21/V22/V22bis/V23 modem), and the three things that matter for repair - a PSU schematic, a separately documented fuse PCB, and a battery PCB drawn apart from the CPU board. Recorded that the 'Compendium' page holds the same document |
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The '''PPC 512S / 512D, PPC 640S / 640D Personal Portable Computer Service Manual''' is Amstrad's own service manual for the PPC portables. 31 printed pages, scanned as 42, with a text layer and searchable. | |||
== Contents == | |||
Amstrad's own contents list, with printed page numbers: | |||
* Technical specification — 2; important notes to service engineers — 2 | |||
* '''FD-5 maintenance and alignment information''' — 3–11 | |||
* Exploded view 1 — 12; exploded view 2 — 13 | |||
* Circuit board views — 14; alignment instructions — 14 | |||
* FD-5 control board schematic diagram — 15 | |||
* Cabinet drawing and parts list — 16 | |||
* '''CPU / switch / battery PCBs'''; '''memory / fuse / volume PCBs''' — 18, 19 | |||
* '''Modem PCB component layout''' — 20 | |||
* Keyboard schematic diagram — 21 | |||
* '''Chassis schematic diagrams''' — 22–25 | |||
* '''Power supply schematic diagram''' — 26 | |||
* '''Modem chassis schematic diagrams''' — 27, 28 | |||
* '''Electrical parts list''' — 29–31 | |||
== What it settles == | |||
'''Technical specification''' for the PPC640: | |||
* '''8086 16-bit processor at 8 MHz'''; 640K RAM and 64K video memory | |||
* A '''compartment for 10 alkaline C cells giving up to 8 hours use''', plus an AC mains adaptor | |||
* Integrated display adaptor fully MDA- and CGA-compatible, driving '''either the internal LCD panel or an external monitor''' | |||
* '''640 × 200 pixel supertwist LCD''', supporting all CGA and MDA graphics and text modes, tiltable to six viewing angles with adjustable contrast; grey-scale emulation | |||
* '''Integral modem''' supporting V21 (300 bps full duplex), V23 (1200/75 bps), V22 (1200 bps full duplex) and V22bis (2400 bps full duplex), Hayes-command compatible with auto-dialling and auto-answer; serial port included | |||
* Enhanced AT-type keyboard with 102 keys; single or twin 720K 3.5-inch drives; MS-DOS 3.3; Mirror II communications software | |||
* Speaker with volume control; battery-backed real-time clock with scratchpad RAM; 8087 socket; socket for the PPC640 expansion box, which accepts IBM-compatible expansion cards and a hard disc; carrying case with pockets for manual and disks | |||
'''Three things here matter for repair.''' The machine has '''its own power supply schematic''' (page 26) and a separate '''fuse PCB''' documented at page 18–19 — so a dead PPC has a documented fuse to check before anything else. The '''battery PCB''' is drawn separately from the CPU board, which is where corrosion from ten leaked C cells does its damage. And the '''modem is a separate subsystem''' with its own component layout and its own chassis schematics, so a modem fault need not implicate the mainboard. | |||
The '''FD-5 maintenance and alignment''' section at pages 3–11 is a full drive procedure in the same style as the FD-3 sections of the PC1512 and PC1640 manuals. | |||
== What this manual does not contain == | |||
* '''No LCD panel repair data''' — the display is treated as an assembly. | |||
* '''No expansion box coverage.''' | |||
* '''No fault-symptom table''' for the computer itself; the flowcharts cover the drive. | |||
== Another copy of this document == | |||
'''[[Amstrad PC and PPC Service Manual (Compendium)]]''' holds the same manual in a 32-page scan, under a title that wrongly implies it also covers the PC1512 and PC1640. It does not. | |||
<pdf> File:Amstrad PPC 512 PPC 640 Service Manual.pdf </pdf> | <pdf> File:Amstrad PPC 512 PPC 640 Service Manual.pdf </pdf> | ||
Download here: [[:File:Amstrad PPC 512 PPC 640 Service Manual.pdf|Amstrad PPC 512 PPC 640 Service Manual.pdf]] | |||
== Related pages == | |||
* [[Amstrad PC1512 Service Manual]] · [[Amstrad PC1640 Service Manual]] · [[Sinclair PC200 (Amstrad) S12 / S14 Service Manual]] | |||
[[Category:Amstrad Service Manuals]] | [[Category:Amstrad Service Manuals]] | ||
[[Category:Service Manuals]] | |||