AMSTRAD DMP2000 User manual

DMP2000 /DMP3000
DMP4000
PRINTER
SERVICE MANUAL

DMP2000/3000 SECTION ONLY.
FOR DMP4000 SEE PAGES 13 ONWARDS
CONTENTS
Safety Note
Technical Specifications
Interface
Dipswitch Settings
Control PCB's
Cabinet Drawing
Printer Mechanism
Printer Mechanism Parts List
Block Diagram
Wiring Diagram
Circuit Diagram
Electrical Parts List
DMP4000
Page
2
2
3
3
4
5
6
7
7
8&9
10& 11
12
13-20
TECHNICAL SPECIFICATION
Print System:
Print Speed
Printing Characteristics
(vertical xhorizontal)
Normal Character Size
Print Sizes
Standard (Pica)
Mini (Elite)
Condensed
Double Width Standard
Double Width Mini
Double Width Condensed
Number of Columns
Line Feed Rates
Line Feed Speed
Paper Type
Number of Copies
Interface
Ink Ribbon
Dimensions
Weight
Mains Supply
DMP2000
Impact Dot-Matrix
105 CPS max
9x9 (normal character)
9x10 (expanded character)
9xchosen amount (9 pin bit-image)
96 characters ASCII +international
character sets
10CPI/80CPL
12 CPI/96CPL
17 CPI/137 CPL
5CPI/40 CPL
6CPI/48 CPL
8.5 CPI/68 CPL
80 (Standard)
40 (Double Width)
132 (Condensed)
66 (Double Width Condensed)
1/6 inch
1/8 inch
7/72 inch
n/216 inch programmable
n/72 inch programmable
200 mS(1/6 inch)
4.5 to 1inches fan-fold (tractor feed)
4to 9.5 inches cut sheet or roll paper
(friction feed)
2sheets (including original)
40 gsm pressure-sensititive paper train
Parallel (Centronics compatible)
Cassette (1 million characters life per ri
380 (w) x100 (h) x260 (d) mm
220-240V AC 50Hz
DMP3000
Impact Dot-Matrix
105 CPS (normal character)
52 CPS (double width character)
9x9 (normal character)
9x10 (double width character)
8xchosen amount (bit-image)
9xchosen amount (9 pin bit-image)
96 characters ASCII +Italics
+
international character sets
2.1 (width) x2.55 (height) mm
10CPI/80CPL
12 CPI/96CPL
3
5CPI/40 CPL
6CPI/48 CPL
8.5 CPI/68 CPL
80 (Standard)
40 (Double Width)
132 (Condensed)
66 (Double Width Condensed)
1/6 inch
1/8 inch
7/72 inch
n/216 inch programmable
n/72 inch programmable
200 mS(1/6 inch)
4.5 to 10 inches fan-fold (tractor feed)
4to 9.5 inches cut sheet or roll paper
(friction feed) ^_J
2sheets (including original)
40 gsm pressure-sensititive paper train
Parallel (Centronics compatible)
bbon)Cassette (1 million characters life per ribbon)
400 (w) x250 (d) x100 (h) mm
4.2 Kg
220-240VAC50Hz
SAFETY TEST
PLEASE NOTE: When any work is completed on this unit, correct safety tests must be carried out
to ensure continued electrical safety.
PLEASE NOTE: All parts shown with the part number prefix B\ are Safety Items and must be
replaced with similar items having an identical safety specification.
All of these items may be purchased direct from AMSTRAD PLC.
AMSTRAD pic
BRENTWOOD HOUSE, 169 KINGS ROAD, BRENTWOOD, ESSEX CM14 4EF.
Telephone: [phone]. Telex: 995417 Amsele G.

Interface
PIN DESIGNATION
1DATA
STROBE
2DATA (LSB)
3DATA 1
4DATA 2
5DATA 3
6DATA 4
DATA 5
^DATA 6
9* DATA 7(MSB)
ACKNOWLEDGE
12
13
I/O DESCRIPTION
IN Taking pin low enables receiving of DATA to
DATA 7. Minimum necessary pulse width is 0.5 uS.
IN 8-bit data signal. Taking pin high or low
corresponds to 1and respectively.
BUSY
PE
SELECT
OUT Active low output pulse generated when data entry
and processing are completed. After this signal,
subsequent data will be accepted. This signal is
also generated when changing from off line to on line.
OUT Output high under any of the following conditions:
a. Going off line.
b. Paper feed or printing operation.
c. When acontrol code is received.
OUT Output high when paper is out. (When on line,
paper out is sensed after executing apaper feed
command. When off line, paper out is always sensed.
OUT On line and off line correspond to high and low
respectively. When off line, DATA to DATA 7are
not receivable.
PIN DESTINATION I/O DESCRIPTION
14 NC
15 NC
16 ov
17 CHASSIS GND
18 +5V OUT +5V (50mA max) power supply output
19 GND Signal ground.
20 GND Signal ground
21 GND Signal ground
22 GND Signal ground
23 GND Signal ground
24 GND Signal ground.
25 GND Signal ground
26 GND Signal ground
27 GND Signal ground
28 GND Signal ground
29 GND Signal ground
30 GND Signal ground
31 INPUT PRIME IN Taking pin low initialises printer
Minimum necessary pulse width is lOOuS
32 FAULT OUT Output low when off line
33 GND
34 NC
35 +5V QUI
DIP switch settings
Described below is how to adjust DIP switches DS1 -1 ,DS1 -2 and DS1 -3 to select one
of the international character sets. The following table indicates the functions of the
remaining DIP switches:
SWITCH FUNCTION OFF ON
DS1-1 International characters See Chapter 2See Chapter 2
DS1-2 International characters See Chapter 2See Chapter 2
DS1-3 International characters See Chapter 2See Chapter 2
DS1-4 CR function CR only CR& LF
DS1-5 Paper out sensor Enable Disable
DS1-6 Page length 11 inch 12 inch
DS1-7 Code unit 8units 7units*
DS1-8 Default character set Standard NLQ-Standard
DS2-1 Zero character Unslashed Slashed
DS2-2 Default skip perforation Disable Enable
DS2-3 Buffer mode Character Graphics
DS2-4 Buffer mode Character/graphics Download
DS2-5 SLCT IN signal Not sent Automatically sent
DS2-6 Alarm bleeper Disable Enable
DS2-7 Default typeface Bold off Condensed &Bold on
DS2-8 Default typeface Condensed off Bold on
DS2-9 Do not use
DS2-10 Do not use
Set DS1-7 ON when using the printer with an Apple computer.
REMEMBER -Al ways switch the printer off before adjusting the DIP switches.

CONTROL P.C.B.'S
CABINET PARTS LIST
Sym Description DMP2000 DMP3000
1Top Cabinet 190701 190851
2Bottom Cabinet 190702 190852
3Dust Cover 190703 190850
4Rotary Knob 190704 190853
5Shield Plate 190705 190705
6Heat Sink
7Paper Guide 190706 190706
8Metal Leg 190707 190707
9Earth Tag
10 Name Plate 190708 190856
11 Function Inlay 190709 190855
12 Bottom Inlay 190710 190854
13 Rubber Foot Dia 10x1.6mm 19071
1
190711
14 Rubber Ring
15 Printer Mechanism 190712 190712
16 Mains Transformer 190713 190713
17 AC Power Cord BS Lead 3Core 6'
18 Power Switch 2Pit SDE3GE 190714 190714
19 PCB Main
20 PCB AC
21 PCB LED
Printer Ribbon SOFT06049 SOFT50015
Printer Cable -PL2

CABINET DRAWING

PRINTER MECHANISM

PRINTER MECHANISM PARTS LIST
Sym
.
«.
1
2
4,8
5
6
9
10
11
12
13
15
17
18
19
20
21
23
24
25
26
28
30
31
33
35
36
37
38
39
40
42
44
45
46
Description
Damper R
Set Platen
LF gear
LF Heat Sink
Set LF Motor
Bush
Poly Slider
LF Spring
LF Collar
ERing E-6
Clip Plate
Set CR Shaft
Felt Ring
CR Spring R
ERing E-4
Gap Lever
CR Spring L
Upper Felt
Upper Spring
Sensor Assy.
Set Guide Frame
Release Lever
ERing E-3
Set CR Motor
Set CR Gear
ERing E-2
LF Shaft
CRing
Tractor Stopper
Paper Guide
LF Shaft Gear
Roller Shaft
SRelease Lever
Screw M3x6
Part No.
190748
190749
190750
190751
190752
190753
190754
190755
190756
190757
190758
190759
190760
190761
190762
190763
190764
190765
190766
190767
190768
190769
190770
190771
190772
190773
190774
190775
190776
190777
190778
190779
190780
190781
I48
I49
50
51
52
53
54
56
57
58
59
60
61
62
63
64
65
66
67
63
71
72
73
74
75
76
77
78
79
80
85
86
Sub Frame
Set Roller
SP Bracket
Roller Spring
Guide Spring
Washer
Guide Spring-B
Centre Guide
Paper Press
Set Base
Damper F
Damper Collar
Set Carriage
Stopper Spring
Ribbon Stopper
Set FPC
Cable Clamp
Pressure BD
Pressure Spring
ADJ Pulley
Set ADJ. Plate
Tractor L
Main Sprocket
Set Feed Roller
Pin Belt
Tractor Plate
Tractor Cover L
Cover Plate L
Tractor R
Tractor Cover R
Cover Plate R
Print Head With
Ribbon Mask
Printer Ribbon
190782
190783
190784
190785
190786
190787
190788
190789
190790
190791
190792
190793
190794
190795
190796
190797
190798
190799
190800
190801
190802
190803
190804
190805
190806
190807
190808
190809
190810
190811
190812
190813
SOFT06049
DMP2000/3000 BLOCK DIAGRAM
•UZZER
CONTROL
V4 ICIHL100
1/1 ten MLt at
LINE FILTER
CJ1.CH 0.04TUFIFIITH CAPJ
CJ2.C31 aOO»JuFl»»HTT CAR)
111 l.J-H (HUM COIll 117 V
•OHI

DMP2OOO/3OO0 Wll
€>
8

WIRING DIAGRAM
PRINT HEAD
HP PE
SENSOR
FUNCTION
KEY

DMP2OOO/3O00CIRC
DMP 2000 DMP 3000
USING 1PC 27128 USING 1PC 27256
IC 827128 27256
IC 9 NIL NIL
IC 10 6116 OR 8128 6264
J12 3 12
J21-212
J32-31-2
J5122-3
USING 2PCS 2764 USING 2764 &27128
IC 82764 2764
IC9 2764 27128
IC10 6116 OR 8128 6264
J1121-2
J22-32 3
J32313
J5121-2
AMSTHAD COMPUTER NON AMSTRAD COMPUTER
J42-3 1-2
10

)0 CIRCUIT DIAGRAM
PINS
TO IC3
AO H
'.1 7
1a: 6
1! '„ 5
A4 4
|A5 :f
iA6 2
A7 1
5V 23
A10 1<»
OOJ (11)
(9) 112)
(8) (13)
17) CIS)
(6) (lb)
(5J (1/)
(4) ,C10 (16)
(3) (ly)
]CN4 12 I
11

ELECTRICAL PARTS LIST
12
Circ. Ref. Description Part No.
IC's
IC1 LM339/HA17339 190724
IC2 HD74LS00P 190728
IC3, 11 MB74LS06 190729
IC4 HD74LS74AP 40014
IC5 HD74LS14P 190730
IC6 UPD7811G-071 190733
IC7 HD74LS373P 170108
IC8 HN4827128G-25 50nS 190722
IC10 MB8128-15 190723
IC12-14 HD74LS374P 190727
IC15, 16 HD74LS139P 190726
IC17 HA17555 190725
TRA1 HA13408 190814
TRA2, 3TH3L10 190734
IC18 L7805CY 190731
|Transistors ~|
TR1.2 2SA1015-Y 170453
TR3, 42SB858B 190721
TR5, 6DTA114E 151096
|Diodes
D1 Zener Diode 3.3V DC 190719
D2-22 Sig Diode IN4148 190715
D23 Zener Diode 27VDC 190720
D24, 25 IN4004 190716
BD1 Bridge Rect S4VB10 190718
BD2 Bridge Rect S2VB10 190717
DA1, 2Diode Array D1CA 190815
LED1, 2LED GrnTLG211 190744
LED 2LED Red TLR211 190743
|Miscellaneous I
DS1 8Way Dip Switch N/O 190737
DS2 10 Way Dip Switch N/O 190738
SW1 Power Switch 2Pit <\190714
SW2-4 P/B Tact Switch 1Pit 190739
TX Mains Transformer BS 4190713
LF1 Mains Filter Coil 41 90740
BZ Piezo Bleeper 190736
OSC Ceramic Resonator 11MHz 190742
VR Semifixed Resistor 68 ohm 190745
RCN1 RC Network T002 190732
Resistors
Desc. Circ. ref. Part No.
47ohm R5 10020
82 ohm R3 10031
330ohm R7, 72, 73 10044
620ohm R46-49, 56-59 190816
1kohm R8, 11, 14 10061
2.2kohm R12, 50, 51 10069
4.7kohm R15-22, 24-45, 52, 53 10077
5.1 kohm R13 190817
6.2kohm R9 190818
7.5kohm R4 190819
10kohm R55 10085
27kohm R54 10095
39kohm R64 10099
47kohm R1 10101
100kohm R2 10109
470kohm R6, 7, 10 10131
100ohm/2W R62, 63 190820
470ohm/1W R60, 61 190821
Ceramic Capac:itors
33pF C7, 8 150514
470pF C11-13 190822
0.01 uF C22, 27 24011
Mono Glass Ca pacitors
0.1uF/50V DC |C1-3, 5, 6, 9, 10, 14-21,23 190823
Mylar Capacito rs
0.01 uF |C24 |2f006
Electrolytic Ca pacitors
1uF/50V C1,4 20062
47uF/16V C26 20049
4700pF/16V C28 150479
Polystyrene Ca pacitors
0.0022uF/250V| C32, 33 4190824
0.047uF/250V |C31.34 4190825
»
V

DM P4000 SECTION
CONTENTS
Technical Specification
Safety Note
Exploded View &Parts List
Cabinet Drawing &Parts List
Component Layouts
Layouts/Masks
Electrical Parts List
Wiring Diagram
Circuit Diagram
Page
13
13
14
15
16
17
18
19
20
V
SAFETY TEST
PLEASE NOTE: When any work is completed on this unit, correct safety tests must be carried out
to ensure continued electrical safety.
PLEASE NOTE: All parts shown with the part number prefix Aare Safety Items and must be
replaced with similar items having an identical safety specification.
All of these items may be purchased direct from AMSTRAD PLC.
W<nt system:
Print speed:
Printing characteristics
(vertical xhorizontal):
Characters:
Print sizes:
Number of columns:
Wire dot-matrix
200 CPS (standard)
50CPS(NLQ)
9x9 (ASCII characters -table 1)
18x9 (ASCII characters -table 2)
12x11 (special characters -tables 3.1 and3.2)
24 x11(special characters -tables 4.1 and 4.2)
8xchosen amount (bit-image graphics)
ASCII -96
Italics -96
NLQ-96
NLQ italics -96
International character sets -9
Special characters -132
Standard (Pica) -1CPI /136 CPL
Mini (Elite)- 12 CPI/ 163 CPL
Condensed- 17 CPI/ 233 CPL
136 (standard)
233 (condensed)
Line feed rates:
Linefeed speed:
Paper type:
Interface:
Mains supply:
Dimensions:
Weight:
1/6 inch
1/8 inch
7/72 inch
<n>/72 inch programmable
<n>/216inch programmable
100mS(1/6inch)
Tractor feed (fan fold) -3to 16
7
2inches
(75 to 420 mm)
Friction feed (cut sheet or roll) -2to
151/2inches
(50 to 395 mm)
Parallel (Centronics compatible)
220-240 Volts AC 50 Hz
24 (width) x14(depth) x5(height) inches
(600 x350 x120 mm)
9.5 kg
13

MECHANISM
PARTS LIST
PRINTER MECHANISM
EXPLODED VIEW &PARTS LIST
14
Sy Description Part No.
1Print Head 190972
2Tractor Bearing 190974
3Tractor Gear 190975
4Idler Gear A190977
5Idelr Gear B190979
6Platen Gear 190980
7Carriage Shaft 190985
8Set Gap Lever A190986
9Pressure Roller
Spring (R) 190989
10 HP Sensor Assy 190991
11 Ribbon Wire 181050
12 Wire Spring 191051
13 Guide Shaft 190992
14 CR Motor Assy. 190993
15 CR Wire 191052
16 Paper Guide M190994
17 Tractor L190995
18 Tractor R190996
19 Set CR Frame A190999
20 Cassette Catch 191000
21 FPC Guide 191001
22 Set Clutch Plate 191002
23 Clutch Spring 191003
24 RFD Gear 191004
25 RD Gear 191005
26 Set CR Frame B191006
27 CR Guide 191007
28 Ribbon Drive 191008
29 Set Free Arm 191013
30 Bearing £1014
31 Set Release Lever>i^9 1015
32 Release Lever
Spring 191016
33 Set Link Lever 191017
34 Platen 191018
35 Bearing A191019
36 Paper Press 191020
37 Stopper Roller 191021
38 Spring Stopper
Roller 191022
39 Stopper Shaft 191023
40 Set PLever (R) 191024
41 Set PLever (L) 191025
42 Set Roller
Bracket (R) 191053
43 Set Pulley D16 191054
44 Friction Spring 191029
45 LF Motor Assy 191032
46 Paper Chute 191033
47 Release Shaft 191034
48 Roller Lever 191035
49 Roller 191036
50 rriction Arm 191037
51 Torque Spring 191038
52 3earing 191039
53 Set Roller
Bracket (L)
191040
54 =>E Lever ^1043
55 3ESpring v1044
56 3ESensor Assy T~1045
-31
13 TURNS ON THE G-PULLEY (ANTICLOCKWISE)

CABINET PARTS LIST
CABINET DRAWING
Sym Description Part No.
1Top Cabinet 190936
2Bottom Cabinet 190937
3Upper Dust Cover 190934
4Lower Dust Cover 190935
5Rotary Knob 190941
6Roller Release Knob 190942
7Push Button 190940
8Printer Mechanism 190929
1.7 Name Plate 190946
18 Function Inlay 190944
19 Bottom Inlay 190943
22 Rubber Foot 190945
23 Mains Transformer A1 90931
25 Power On/Off Switch Al 90920
30 Printer Ribbon (not aspare SOFT
part) 50015
V
15

COMPONENT LAYOUTS
>lf'V:.-,.S:-.l'!.M... ~~\
16

PCB LAYOUTS
^
L
17

DMP4000
ELECTRICAL PARTS LIST
Ref. No. Description
IC's
IC6
IC7
IC8
IC3
IC4
IC14
IC5
IC15
IC2
IC13
IC16
IC1
IC10
IC9
IC11
Part No.
Transistors
TR1,2, 5, 8, 9,
TR4
TR6, 7
TR3
TRA1-4
PH1,2
TR20
TR19
IC LM393
IC NE555
IC 74LS139
IC 74LS273
IC 74LS373
IC 74LS374
IC 74LS377
IC 74LS00
IC 74LS02
IC 74LS14
IC 74LS74
IC Regulator 7805
IC UPD7811
IC EPROM 256K250nS
IC S.RAM 6264-15
IC 28 Way Socket
11-18TR 2SC3656
TR 2SB882
TR 2SB886
TR 2SD1196
TR Array TH3L10
TR SP5216
TR DTC114N
TR 2SC1815
Diodes
D2-4, 9, 12-33
D6, 7, 11,34
BR1, 2
D10
D35, 36
D1,5, 8
DA1-4
LED1, 2
LED3, 4
Switches
SW
DSW1
DSW2
SW1-4
DIN4148
DIN4004
DBridge Rect. KBL02
DZener 3.3V 0.5W
DZener RD47F47V
DZener IN6275
DArray DICA20
LED Red
LED Green
Mains Switch
Dip Switch 8Way
Dip Switch 10 Way
Tact Switch
190900
190901
190722
190903
170108
190727
190904
190728
190905
190730
40014
190731
190733
190857
190858
190506
190908
190909
190910
190911
190734
191046
191047
170447
190715
190716
190912
190913
190915
190916
190917
190926
190927
A1 90920
190737
190738
190921
Description Ref. No. Part No.
Resistors
18ohm R43 10012
180ohm R112, 113, 116
220ohm R41 10040
330ohm R79-81,201 10044
470ohm R92, 94 10048
680ohm R1, 9-16, 51-58 10052
1kohm R3, 18, 42, 45, 47, 67-74, 78, 87-90,
93, 96-108 10061
2k2ohm R4, 19-27, 59-66 10069
4k7ohm R8, 17, 34-39, 40, 44, 46, 48, 49,
75, 76,83-86,91, 95, 110, 115 10077
5k1ohm R5, 28 10078
6k8ohm R29, 114 10081
10kohm R31.70 10085
18kohm R6 10091
22kohm R7A, 1 1
1
10093
51 kohm R30 10102
470kohm R32 10125
7.5ohm/3W R77, 78 i'055
mi056
22ohm/2W R50
36ohm/2W R33 191057
Ceramic Capacitors
22pF C16, 17 150511
100pF C11 24016
470pF C24, 25, 27,31 24004
0.001 uF C9, 18-21 24027
0.01 uF C10 24011
0.22UF/250V C102, 103 A191058
0.047UF/250V C101, 104 '191059
0.1 uF C4-6, 12-14, 22, 23, 26, 28-30 24020
Electrolytic Capai:itors
1uF/50V C8 20062
10uF/16V C7 20024
4700uF/16V C2 150479
6800uF/C3 191060
Circ. Ref. Description Part No.
Miscellaneous
LF1 Filter Coil 1.3mH 190918
XTal 11MHz Ceramic Resonator 190919
VR1 Semi Fixed Resistor 68kohm 190928
Piezo Bleeper 190736
Printer Cable -PL2 190947
Instruction Book 190948
36 Way Connector 190949
Fuse T1 A250V 'h 190959
Fuse T5A 250V !£. 190960
Fuse T3.15A 250V S/88150
18

DMP4000WIRII
L
FUNCTION KEY
00017-600
0D0fr-i
r.
©
FiTk
R101
LED 4
L&j
ft*
(®
1W
©
(C.R. MOTOR

WIRING DIAGRAM
PRINT HEAD
^
19