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- 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
editThe 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| 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
editThere is no fault-finding table, adjustment procedure or list of the electrolytic capacitors.
Related pages
edit- 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)