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P4 verification: real documentation page โ€” transcribes the electrical parts lists and technical data these manuals carry, including the DMP3000 reservoir and safety capacitors and the DMP4000 fuse ratings
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The '''''Kundendienst-Handbuch / Service Manual DMP 4000''''' is Schneider Computer Division's service manual for the DMP 4000 wide-carriage dot-matrix printer โ€” the DACH-region badge of the Amstrad DMP4000. '''Ident-Nr. 33984'''; the footer code is '''HDS 60964/2500/16/87''', dating it to '''1987'''. '''14 pages''', German and English in parallel, with a text layer.
Amstrad's own [[Amstrad DMP2000 / DMP3000 / DMP4000 Service Manual|combined manual]] treats the DMP4000 as an eight-page appendix. '''This one is a dedicated DMP4000 manual with its own complete electrical parts list''', and is the better source for the machine.
== Contents ==
* p. 1 โ€” cover ยท p. 2 โ€” '''cabinet parts list''' ยท p. 3 โ€” cabinet drawing
* p. 4 โ€” '''mechanism parts list''' (print head 37 665 00-501, gears, springs, cable drives, tractors, carriage, platen)
* p. 6โ€“7 โ€” '''circuit diagram''' ยท p. 8 โ€” control PCB ยท p. 9 โ€” '''main PCB''' ยท p. 10 โ€” '''wiring diagram''' ยท p. 11 โ€” AC PCB and control PCB, with the mains-side safety warning
* p. 12 โ€” '''Electrical parts list: ICs, transistors, diodes and resistors'''
* p. 13 โ€” '''Capacitors, switches and miscellaneous''' including the fuses
* p. 14 โ€” '''Technische Daten''', '''DIP-switch table''' and the '''Centronics interface pinout'''
== The parts that matter on the bench ==
<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table"
|-
! Ref !! Part !! Schneider part no.
|-
| '''F1''' || '''fuse T5A / 250 V''' || 124A0001-5000
|-
| '''F2''' || '''fuse T3.15 / 250 V''' || 124A0001-3150
|-
| '''F3''' || '''fuse T1A / 250 V''' || 124A0001-1000
|-
| C101, C104 || 0.047 ยตF / 250 V metallised film || 102A0008-4725
|-
| LF1 || mains filter choke, '''1.3 mH''' || 108A1000-0001
|-
| X1 || '''11 MHz ceramic resonator''' || 111A0002-1160
|-
| DSW1 || 8-way DIP switch || 107A0010-0801
|-
| DSW2 || 10-way DIP switch || 107A0010-1001
|-
| SW1โ€“SW4 || tact switches || 107A0011-0112
|-
| BZ1 || piezo bleeper || 114A0091-0001
|-
| CN9 || 36-way Centronics socket || 109A0006-3603
|-
| PT1 || photo-interrupter '''SPI 216''' || P88010
|-
| โ€” || '''HP (home position) sensor assembly''' || SP1300A56
|-
| โ€” || '''PE (paper end) sensor assembly''' || SP1300A67
|-
| '''IC1''' || '''7805''' voltage regulator || 106A0003-7805
|-
| '''IC12''' || '''ยตPD7811''' โ€” the printer's CPU || 106A0000-7811
|-
| IC9 || 256K EPROM, 250 ns || 106A0001-2756
|-
| IC11 || 6264-15 SRAM || 106A0001-6264
|-
| BR1, BR2 || bridge rectifiers '''RS403L''' || 104A1003-0410
|-
| D1, D5 || 1N6275 15 V transient suppressor || 104A2012-6275
|-
| D8 || RD15 1 W zener || 104A2001-1150
|-
| D35, D36 || RD47 1.5 W zener || 104A2001-2470
|-
| TR3 || 2SD1196 || 105A0204-1196
|-
| TR10 || 2SA1423 || 105A0101-1423
|-
| R77, R78 || 7.5 ฮฉ 3 W || 101A0006-0751
|}
'''The DMP4000 has three fuses''' โ€” T5A, T3.15A and T1A, all 250 V, all slow-blow. That is worth knowing before condemning a board: the DMP3000 has a different arrangement, and a dead wide-carriage machine is often one of these three.
'''The capacitor list in this manual is short by design.''' Only C101 and C104 appear, both 0.047 ยตF 250 V film parts on the mains side. The electrolytics are not itemised in this document โ€” if you are recapping a DMP4000, this manual will not give you their values, and this wiki has no other source that does.
== Technical data, as printed ==
<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table"
|-
! Item !! Value
|-
| Print system || Impact dot-matrix wire printer
|-
| Speed || '''200 cps''' normal
|-
| Character matrix || ASCII table 1: 9 ร— 9; table 2: 18 ร— 9; special characters tables 3.1/3.2: 12 ร— 11 and 4.1/4.2: 24 ร— 11
|-
| Character sets || 96 ASCII, 96 italic, 96 NLQ, 96 NLQ italic, 9 international sets, 132 special characters including IBM graphics
|-
| Columns || '''136''' standard (10 cpi), 163 elite (12 cpi), '''233''' condensed (17 cpi)
|-
| Line feed || 1/6, 1/8, 7/72 in, n/72 and n/216 in programmable; 1/6 in in 0.1 s
|-
| Paper || Continuous 7.5โ€“42 cm wide; single sheet 8โ€“39.5 cm wide
|-
| Interface || Parallel, Centronics-compatible
|-
| Mains || '''220โ€“240 V, 50 Hz'''
|-
| Size and weight || 60 ร— 35 ร— 14 cm; '''9.5 kg'''
|}
As on the DMP3000, the Centronics port sources '''+5 V at 50 mA maximum'''.
== What it does not contain ==
No fault-symptom table, no adjustment or alignment procedure, and โ€” importantly โ€” '''no list of the electrolytic capacitors'''.
== Related pages ==
* [[Schneider DMP3000 Service Manual]] โ€” the narrow-carriage machine, with a full capacitor list
* [[Amstrad DMP2000 / DMP3000 / DMP4000 Service Manual]] ยท [[Amstrad DMP1 Printer Service Manual]] ยท [[Amstrad LQ3500 Printer Service Manual]]
* [[Schneider NLQ-401 Service Manual]] ยท [[Capacitor Failure Symptoms]]
<pdf> File:Schneider DMP4000 Service Manual.pdf </pdf>
<pdf> File:Schneider DMP4000 Service Manual.pdf </pdf>


Schneider Computer Division branded DMP4000 dot-matrix printer Service Manual (sold in the DACH region as the Schneider variant of the Amstrad DMP4000).
Download the Schneider DMP4000 Service Manual here: [[:File:Schneider DMP4000 Service Manual.pdf|Schneider DMP4000 Service Manual.pdf]] (2.8 MB)
ย 
Download the Schneider DMP4000 Service Manual here: [[:File:Schneider DMP4000 Service Manual.pdf]]


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

Latest revision as of 02:14, 25 September 2026

The Kundendienst-Handbuch / Service Manual DMP 4000 is Schneider Computer Division's service manual for the DMP 4000 wide-carriage dot-matrix printer โ€” the DACH-region badge of the Amstrad DMP4000. Ident-Nr. 33984; the footer code is HDS 60964/2500/16/87, dating it to 1987. 14 pages, German and English in parallel, with a text layer.

Amstrad's own combined manual treats the DMP4000 as an eight-page appendix. This one is a dedicated DMP4000 manual with its own complete electrical parts list, and is the better source for the machine.

Contents

[edit | edit source]
  • p. 1 โ€” cover ยท p. 2 โ€” cabinet parts list ยท p. 3 โ€” cabinet drawing
  • p. 4 โ€” mechanism parts list (print head 37 665 00-501, gears, springs, cable drives, tractors, carriage, platen)
  • p. 6โ€“7 โ€” circuit diagram ยท p. 8 โ€” control PCB ยท p. 9 โ€” main PCB ยท p. 10 โ€” wiring diagram ยท p. 11 โ€” AC PCB and control PCB, with the mains-side safety warning
  • p. 12 โ€” Electrical parts list: ICs, transistors, diodes and resistors
  • p. 13 โ€” Capacitors, switches and miscellaneous including the fuses
  • p. 14 โ€” Technische Daten, DIP-switch table and the Centronics interface pinout

The parts that matter on the bench

[edit | edit source]
Ref Part Schneider part no.
F1 fuse T5A / 250 V 124A0001-5000
F2 fuse T3.15 / 250 V 124A0001-3150
F3 fuse T1A / 250 V 124A0001-1000
C101, C104 0.047 ยตF / 250 V metallised film 102A0008-4725
LF1 mains filter choke, 1.3 mH 108A1000-0001
X1 11 MHz ceramic resonator 111A0002-1160
DSW1 8-way DIP switch 107A0010-0801
DSW2 10-way DIP switch 107A0010-1001
SW1โ€“SW4 tact switches 107A0011-0112
BZ1 piezo bleeper 114A0091-0001
CN9 36-way Centronics socket 109A0006-3603
PT1 photo-interrupter SPI 216 P88010
โ€” HP (home position) sensor assembly SP1300A56
โ€” PE (paper end) sensor assembly SP1300A67
IC1 7805 voltage regulator 106A0003-7805
IC12 ยตPD7811 โ€” the printer's CPU 106A0000-7811
IC9 256K EPROM, 250 ns 106A0001-2756
IC11 6264-15 SRAM 106A0001-6264
BR1, BR2 bridge rectifiers RS403L 104A1003-0410
D1, D5 1N6275 15 V transient suppressor 104A2012-6275
D8 RD15 1 W zener 104A2001-1150
D35, D36 RD47 1.5 W zener 104A2001-2470
TR3 2SD1196 105A0204-1196
TR10 2SA1423 105A0101-1423
R77, R78 7.5 ฮฉ 3 W 101A0006-0751

The DMP4000 has three fuses โ€” T5A, T3.15A and T1A, all 250 V, all slow-blow. That is worth knowing before condemning a board: the DMP3000 has a different arrangement, and a dead wide-carriage machine is often one of these three.

The capacitor list in this manual is short by design. Only C101 and C104 appear, both 0.047 ยตF 250 V film parts on the mains side. The electrolytics are not itemised in this document โ€” if you are recapping a DMP4000, this manual will not give you their values, and this wiki has no other source that does.

Technical data, as printed

[edit | edit source]
Item Value
Print system Impact dot-matrix wire printer
Speed 200 cps normal
Character matrix ASCII table 1: 9 ร— 9; table 2: 18 ร— 9; special characters tables 3.1/3.2: 12 ร— 11 and 4.1/4.2: 24 ร— 11
Character sets 96 ASCII, 96 italic, 96 NLQ, 96 NLQ italic, 9 international sets, 132 special characters including IBM graphics
Columns 136 standard (10 cpi), 163 elite (12 cpi), 233 condensed (17 cpi)
Line feed 1/6, 1/8, 7/72 in, n/72 and n/216 in programmable; 1/6 in in 0.1 s
Paper Continuous 7.5โ€“42 cm wide; single sheet 8โ€“39.5 cm wide
Interface Parallel, Centronics-compatible
Mains 220โ€“240 V, 50 Hz
Size and weight 60 ร— 35 ร— 14 cm; 9.5 kg

As on the DMP3000, the Centronics port sources +5 V at 50 mA maximum.

What it does not contain

[edit | edit source]

No fault-symptom table, no adjustment or alignment procedure, and โ€” importantly โ€” no list of the electrolytic capacitors.

[edit | edit source]

Download the Schneider DMP4000 Service Manual here: Schneider DMP4000 Service Manual.pdf (2.8 MB)

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