Schneider DMP4000 Service Manual
The Kundendienst-Handbuch / Service Manual DMP 4000 is Schneider's service manual for the DMP 4000 wide-carriage dot-matrix printer, Ident-Nr. 33984, footer code HDS 60964/2500/16/87. It has 14 pages, with the parts lists in German and English side by side, and the scan has a text layer. Amstrad's combined manual covers the DMP4000 in an eight-page appendix; this manual is for the DMP 4000 alone and has its own electrical parts list.
Contents
[edit | edit source]- p. 1: cover
- p. 2: cabinet parts list
- p. 3: cabinet drawing
- p. 4: mechanism parts list (print head 37 665 00-501, motors, gears, springs, tractors, carriage, platen)
- p. 5: printer mechanism drawing
- pp. 6–7: circuit diagram
- pp. 8–9: main PCB
- p. 10: wiring diagram
- p. 11: AC PCB, with the mains-side warning label, and control PCB
- p. 12: electrical parts list: ICs, transistors, diodes and resistors
- p. 13: capacitors, switches and miscellaneous parts, including the fuses
- p. 14: technical data (in German), DIP-switch table and Centronics interface pinout
Selected parts, as printed
[edit | edit source]The list does not give circuit references for the fuses, the resonator, the bleeper, the sensor assemblies or the Centronics socket.
| Ref | Part | Teile-Nr. (part no.) |
|---|---|---|
| fuse T5A / 250 V | 124A0001-5000 | |
| fuse T3.15 / 250 V | 124A0001-3150 | |
| fuse T1A / 250 V | 124A0001-1000 | |
| C101, C104 | 0.047 µF / 250 V metallised film | 102A0008-4725 |
| LF1 | mains filter coil, 1.3 mH | 108A1000-0001 |
| 11 MHz ceramic resonator | 111A0002-1160 | |
| DSW1 | 8-way DIP switch | 107A0010-0801 |
| DSW2 | 10-way DIP switch | 107A0010-1001 |
| SW1–SW4 | tact switches | 107A0011-0112 |
| piezo bleeper | 114A0091-0001 | |
| 36-way Centronics socket | 109A0006-3603 | |
| PT1 | photo-interrupter SPI 216 | P88010 |
| HP (home position) sensor assembly | SP1300A56 | |
| PE (paper end) sensor assembly | SP1300A67 | |
| IC1 | 7805 voltage regulator | 106A0003-7805 |
| IC12 | µPD7811 | 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 Ω 3 W | 101A0006-0751 |
The three fuses are all time-lag (T) types rated 250 V: T5 A, T3.15 A and T1 A. The DMP 3000 has two, T3.15 A and T315 mA.
The parts list itemises only two capacitors, C101 and C104, both 0.047 µF 250 V metallised film. The electrolytics are not listed; capacitor values are marked on the circuit diagram (pp. 6–7).
Technical data, as printed
[edit | edit source]| Item | Value |
|---|---|
| Print system | Impact dot-matrix (needle) printer |
| Speed | 200 characters/s normal |
| Character matrix | ASCII table 1: 9 × 9; table 2: 18 × 9; special characters tables 3.1/3.2: 12 × 11 and 4.1/4.2: 24 × 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 characters/inch), 163 elite (12 characters/inch), 233 condensed (17 characters/inch) |
| Line feed | 1/6, 1/8 or 7/72 inch, n/72 and n/216 inch programmable; 1/6 inch in 0.1 s |
| Paper | Continuous 7.5–42 cm wide; single sheet 8–39.5 cm wide |
| Interface | Parallel, Centronics-compatible |
| Mains | 220–240 V, 50 Hz |
| Size and weight | 60 × 35 × 14 cm; 9.5 kg |
The interface table gives a +5 V supply output rated at 50 mA maximum.
What it does not contain
[edit | edit source]There is no fault-finding table, adjustment procedure or list of the electrolytic capacitors.
Related pages
[edit | edit source]- Schneider DMP3000 Service Manual, the narrow-carriage printer
- Amstrad DMP2000 / DMP3000 / DMP4000 Service Manual
- Amstrad DMP1 Printer Service Manual
- Amstrad LQ3500 Printer Service Manual
- Schneider NLQ-401 Service Manual
- Capacitor Failure Symptoms
Download: Schneider DMP4000 Service Manual.pdf (2.8 MB)