EPSONIMPACTDOT PRINTER
DLQ-3000
(upgrade model)
SERVICE MANUAL
EPSON
4006094
PREFACE
This document provides supplementary information to describe the new DLQ-3000 (Minerva+), which is a
follow-on version of the DLQ-3000 (Minerva). Therefore, you must refer to this information in conjunction with
DLQ-3000 (Minerva) Service Manual for details on any subjects common to both printers.
-i-
REVISION SHEET
Revision Issue Date Revision Page
A March 15, 1996 - 1st issue
-ii-
DLQ-3000 (MINERVA+) Product Description
1.1 FEATURES
Minerva+ is a 24-pin serial dot-matrix and flat-bed type impact printer. As this printer follows on DLQ-3000
(MINERVA+), the main future is almost same as DLQ-3000 (MINERVA).
The main features are ;
Two built-in and one optional I/F
Bi-Directional Parallel Interface (IEEE-1284 nibble mode)
Serial Interface
Type-B Interface (Option)
The exterior view of DLQ-3000 (MINERVA+) is the same as DLQ-3000 (MINERVA).
Rev.A 1-1
Product Description DLQ-3000 (MINERVA+)
1.2 INTERFACE OVERVIEW
The printer provides an 8-bit Bi-directional parallel interface and serial interface as standard. Moreover, it is
possible to interface to various computers using the optional type-B interface board. This section describes
the specifications of the standard interfaces.
1.2.1 Parallel Interface Specifications
1.2.1.1 Forward Channel
Transmission mode: 8-bit parallel, IEEE-1284 compatible mode
Synchronization: By STROBE pulse
Handshaking: By BUSY and ACKNLG signal
Signal level: TTL-compatible level, IEEE-1284 level 1 device
Adaptable connector: 57-30360 (Amphenol) or equivalent
Data transmission timing: See Figure 1-1.
Note: Transition time (rise time and fall time) of every input signal must be less than 200 ns and
every output signal must be less than 120 ns.
The BUSY signal is at a HIGH level before either -ERROR signal is at a LOW level or the PE signal is at a
HIGH level until all these signals return to their inactive state. The BUSY signal is at a HIGH level in the
following cases:
- During data reception (see the figure above)
- When the input buffer is full
- When the INIT input signal is active
- During initialization
- When the ERROR signal is active
- In the self-test mode
- In the SelecType
- When the parallel interface is not selected.
The ERROR signal is at a LOW level when the printer is in one of the following conditions:
- Printer hardware error (fatal error)
- A paper-out error
- Release lever operation error
PE signal is at a HIGH level during paper out error.
DATA
DATA (n)
DATA (n+1)
500 ns (min.)
-STORBE
500 ns (min.) 500 ns (min.) 0 (min.)
BUSY
0 (min.) 500 ns (max.)
0 (min.)
-ACKNLG
500 ns ~10 µs
Figure 1-1. Data Transmission Timing
1-2 Rev.A
DLQ-3000 (MINERVA+) Product Description
Table 1-1 shows the connector pin assignments and signal functions for the 8-bit parallel interface.
Table 1-1. Signal and Connector Pin Assignments for Parallel Interface
(Forward Channel)
Return
Pin No. Signal Name I/O Description
GND Pin
Strobe pulse. Input data is latched at the falling
1 STROBE 19 In
edge of this signal.
Parallel input data to the printer.
Active-HIGH input.
2-9 DATA1-8 20-27 In
LSB: DATA1
MSB: DATA8
Indicates that data has been received and the
10 ACKNLG 28 Out
printer is ready to accept more data.
A HIGH level means the printer cannot accept
11 BUSY 29 Out
further data.
A HIGH level means a paper-out error. Always
12 PE 30 Out
the logical opposite of the ERROR signal.
Always at a HIGH level (pulled up to +5 V
13 SLCT - Out
through a 1K-ohm resistor).
Auto feed execution means that a line feed is
automatically performed upon input of a CR
14 AFXT - In
code. Checked when the printer is initialized.
Active-LOW signal.
Initialize printer. Minimum 50 µs pulse is
31 INIT 16 In
necessary. Active-LOW signal.
32 ERROR - Out A LOW level means that an error has occurred.
36 SLIN 30 In Not used.
Pulled up to +5V and shorted to +5V via Schottky
18,35 Logic H - Out diode, making these signals appear low to the
host when the printer is turned off.
17 Chassis GND - - Chassis GND
16,19-30,
GND - - Signal GND
33
15,34 NC - - Not used. Not connected.
Note: In/Out refers to the direction of signal flow as viewed from the printer.
Rev.A 1-3
Product Description DLQ-3000 (MINERVA+)
1.2.1.2 Reverse Channel
Transmission mode: 8-bit parallel, IEEE-1284 nibble mode
Synchronization: Refer to the IEEE-1284 specification
Handshaking: Refer to the IEEE-1284 specification
Signal level: IEEE-1284 level 1 device
Data transmission timing: Refer to the IEEE-1284 specification
Extensibility request: the printer responds to the extensibility request in the affirmative, when the
request is 00H or 04H, which mean;
00H: Request nibble mode of reverse channel transfer
04H: Request device ID in nibble mode of reverse channel
Transfer Device ID:
Table 1-2. Transfer ID
ESC/P2 IBM 2391 Plus
[00H][33H] [00H][34H]
MFG:EPSON; MFG:EPSON;
CMD:ESCPL2-00; CMD:PRPXL24-01;
MDL:DLQ-3000; MDL:DLQ-3000;
CLS:PRINTER; CLS:PRINTER;
1-4 Rev.A
DLQ-3000 (MINERVA+) Product Description
Table 1-3 shows the connector pin assignments and signal functions for the 8-bit parallel interface.
Table 1-3. Signal and Connector Pin Assignments for Parallel Interface
(Reverse Channel)
Return
Pin No. Signal Name I/O Description
GND Pin
1 Host Clk 19 In Host clock signal.
Parallel input data to the printer.
Active-HIGH input.
2-9 DATA 1-8 20-27 In
LSB: DATA1
MSB: DATA8
10 Ptr Clk 28 Out Printer clock signal
PtrBusy / Printer BUSY signal and reverse channel
11 29 Out
Data Bit -3,7 transfer data bit 3 or 7.
Ack Data Req / Acknowledge data request signal and reverse
12 28 Out
Data Bit -2,6 channel transfer data bit 2 or 6.
Xflag / Xflag signal and reverse channel transfer data
13 28 Out
Data Bit -1,5 bit 1 or 5.
14 Host Busy 30 In Host busy signal
31 INIT 30 In Not used.
Data Avail / Data available signal and reverse channel
32 29 Out
Data Bit -0,4 transfer data bit 0 or 4.
36 1284-Active 30 In 1284 active signal
A high signal indicates that all other signals
18 Logic H - Out
source by the peripheral are in a valid state.
This line is pulled up to +5V through 3.3K &!
35 +5V - Out
resister.
17 Chassis - - Chassis GND
16,19-30
GND - - Signal GND
,33
15,34 NC - - Not used. Not connected.
Note: In/Out refers to the direction of signal flow as viewed from the printer.
Rev.A 1-5
Product Description DLQ-3000 (MINERVA+)
1.5 MAIN COMPONENTS
The main components of the DLQ-3000 are designed for easy removal and repair. The main components are
:
BOARD ASSY., C124 MAIN-B : control board
BOARD ASSY., C124 PSB/PSE : power supply board(100 ~ 120V/220 ~ 240V)
C124 SUB board
M-5L60 Printer Mechanism
Control Panel
Housing
1.5.1 BOARD ASSY., C124 MAIN-B
The main board consists of a µPD70433, an E05A88, Program (256 KB Flash memory), CG (8M for Japan /
4 M for other countries), D-RAMs (256 MB), Bi-Directional Interface circuit, etc.
1.5.2 BOARD ASSY., C124 PSB/PSE
This Power supply board consists of two transformers, two switching FETs, a switching regulator IC, diode
bridge, etc. This board has ratings for input AC voltages.
1.5.3 Printer Mechanism
This printer mechanism consists of a 24-pin impact dot head, PF motor , CR motor, color ribbon shift motor,
HP/PG sensor, paper width/paper end sensor, etc.
1.4.5 Housing Assembly
This printer Housing consists of the COVER ASSY.,PRINTER, the HOUSING ASSY.,UPPER, the
HOUSING ASSY.,LOWER and FRAME ASSY.,BOTTOM.
1-6 Rev.A
DLQ-3000 (MINERVA+) Service Manual Appendix
A.1 CONNECTOR SUMMARY
This section describes the component connection and detailed pin assignments of each connector of the units.
Figure A-1 shows the component connections of the DLQ-3000, and Table A-1 lists the connector
assignments and reference tables.
C124PSB/PSE
C124 MAIN-B Printer Mechanism
AC
CN10-12 CN1
Printhead
CN2
temp. CN 15,16
CN3
CS Motor
CN9
Fan motor
Film Ribbon Sensor
Color Ribbon Sensor
PARALLEL I/F CN7
PEWSensor Assembly
SERIAL I/F CN8
CN4
CR Motor Assembly
TYPE-B I/F CN6
PF Motor Assembly
CN13
Panel
LOAD Sensor Assembly
CN5
External Fan
CN14
Cover Open Sensor
PF Sensor
HP Sensor
Figure A-1. Cable Connection
Rev.A A-1
Appendix DLQ-3000 (MINERVA+) Service Manual
Table A-2 through appendix lists connector pin assignments.
Table A-1. Connector Assignment
Connector
Board Pin Description
CN 1 20 Printhead drive signal output
CN 2 20 Printhead drive signal output
CN 3 14 CS motor, Color ribbon / film ribbon / CS home sensor
CN 4 11 CR motor, PF motor output
CN 5 13 PG/ REL/COVER OPEN/LOAD sensor, External fan motor
CN 6 36 Type -B I/F
BOARD CN 7 36 Bi-Directional parallel I/F
ASSY.,C124
CN 8 25 Serial I/F
MAIN-B
CN 9 2 Power supply board fan motor
CN 10 4 Power supply input (+5V)
CN 11 6 Power supply input (+35V)
CN 12 6 Power supply input (+35V)
CN 13 10 Control panel
CN 14 2 CR motor common (cover open sensor)
CN 15 2 Power supply board temp.
CN 16 2 Power supply board temp.
CN 4 From CN1 to Printhead output signal
C124 SUB
CN 5 From CN2 to Printhead output signal
BOARD
From CN3 to CS motor, Color ribbon / film ribbon / CS
CN 6
home sensor
CN 1 2 AC input line
BOARD
ASSY., C124
CN 2 10 DC output ( +5V, +35V )
PSB / PSE
CN 3 6 DC output ( +35V )
A-2 Rev.A
DLQ-3000 (MINERVA+) Service Manual Appendix
Table A-2. Connector Pin Assignment - CN7
Pin I/O Name Description (Forward / Reverse)
STOBE / Host
1I Data strobe / Host clock signal
Clk
2 - 9 I DATA 0-7 Parallel data bit 0 to 7
ACKNLG /
10 O Acknowledge / Printer clock signal
PtrClk
BUSY /
11 O PtrBusy, Data Printer busy and reverse channel transfer data bit 3 or 7
Bit-3,7
PE /
Paper out / Acknowledge data request and reverse channel
12 O AckDataReq,
transfer data bit 2 or 6
Data Bit-2,6
SLCT / Xflag, Always HIGH at printer power on / Xflag and reverse
13 O
Data Bit-1,5 channel transfer data bit 1 or 5
AFXT / Host
14 I Not used / Host busy signal
Busy
15 - NC Not used and not connected.
16 - GND Signal Ground
17 - Chassis GND Chassis ground
Pulled up 5V / A HIGH signal indicates that all other signals
18 O Logic-H
soursed by the peripheral are in valid state.
19-30 - GND Signal Ground
31 I INIT / INIT Initialize signal / Not used
ERROR / data
32 O avail, data Error signal / Data available and reverse channel data bit 0,4
bit-0,4
33 - GND Signal Ground
34 - NC Not used and not connected.
35 O +5V Pulled up 5V
SLIN /
36 I Not used. / 1284-active signal
1284-Active
Note: The signal direction I/O are viewed from the connector on the board.
Rev.A A-3
DLQ-3000 (MINERVA+) Service Manual Appendix
COM14 20
20 COM14
COM10/18 13
13 COM10/18
COM6/22 2
2 COM6/22
COM2 14
14 COM2
COM23 10
10 COM23
COM3/19 4
4 COM3/19
COM7/15 6
6 COM7/15
CN1
COM11 3
3 COM11
CN 4
Head Conn 1
Head conn 1
from mainboard HD2 17
17 HD2 to Head
HD3 9
9 HD3
HD6 15
15 HD6
HD7 19
19 HD7
HD10 16
16 HD10
HD11 11
11 HD11
HD14 12
12 HD14
HD15 1
1 HD15
HD18 18
18 HD18
HD19 8
8 HD19
HD22 7
7 HD22
HD23 5
5 HD23
COM12/16 10
10 COM12/16
COM8/20 15
15 COM8/20
COM4/24 11
11 COM4/24
COM1/21 1
1 COM1/21
COM5/17 7
7 COM5/17
COM9/13 2
2 COM9/13
CN2
CN 5
HD1 13
13 HD1
Head Conn 2
Head conn 2
HD4 17
17 HD4
from mainboard to Head
HD5 3
3 HD5
HD8 18
18 HD8
HD9 5
5 HD9
HD12 12
12 HD12
HD13 4
4 HD13
HD16 16
6 HD16
HD17 5
5 HD17
HD20 9
9 HD20
HD21 8
8 HD21
HD24 14
14 HD24
TENP 19
19 TEMP
TEMP 20
20 TEMP
+5V 1
1 +5v
PEWR/L 5
5 PEWR/L
PWLCOM 6
5 PWLCOM
PWRCOM 2
2 PWRCOM
CN1
RFCOM 7
7 RFCOM
CN 4
Head Conn 1
Head conn 1
RFA 11
from mainboard 11 RFA
to Head
RF_A 9
9 RF_A
RFB 10
10 RFB
RF_B 8
8 RF_B
CSHOME 3
3 CSHOME
GND 4
4 GND
COLOR 13
13 COLOR
FILM 14
14 FILM
GND 12
12 GND
Figure A-4. C124 MAIN SUB Board Circuit Diagram
Rev.A A-9
R 158 R159 R160
100K 1 0K
4.75K L151
C 159
R1 81 LP20 1-2R5SD
ZD155
R153
84.5K H ZS 6A1L Q151
560 p A1469
IC151
RB V-2506 DB101 D155 0.22
1 TL494
R161
T101
1 1 1 1 1 1 1 2W
R131 1 ERC81
6 5 4 3 2 0 9
7 C1 54
20 - 004
+ R OV C E E
- R151
1000u
3 I OC C 2 2 1
I
R152
0.22/2W
2 2 C 470/2W
10 V
4 R118
D152
C111 X 2
5 14 R164
2 100K/1W + - D G
T C
6 I F C R N
I 100
E RA 82-0 04 R162
1 1B C T TD 1 B151
560u/200V
6
1 2 3 4 5 7 8
300 C N2
2.2 5W 2.2 5W R166
4
9
TF 3300pC1.5 1 2 R165
/112KV
R163 QA15680
200K 0 +5V/1.0A
1 7
R2 R3
3.6K
TY101 13 R167 1 k
* B10 1 8
GL
C 31 C 158
3 K
2 200p C181
D151
SM12GZ47A 0.01u
101
Q* C113 R 111
1
K1855 0.1 u
C 2 3 10 10P10Q
F
0 .1u 300/1W 2 1
C 8 ch.B
F 2
2200p
3
3 + 35V/1 .5A
0.22u C 116 ERA82-00 4
Q 102 4
D101
C4408 5
1
3300p/1.2KCV14 D131
R1 15 0 6 G pB
Q1013
E
4700p A 1 5 RA82-00 4
R170
C3 C4
D102
270 1 2 R172
1 0K
1SS1 20
330 0p 330 0p R113 C151 C152
R 116 R171 5.6K
4.7k
9
270
1 3
Q1055
R121 R 119
/
3300uX50V A 1
1.5kR173
R1 17 2
10 K
R 114
1
4.7K 1.2K
270
R120
C112
4 1
100u
L1 2 2.4K IC101
2 5V
NJM 431 2 11
2
3
ELF18D850C
3 R 112
C157
470u/6.3V
1
0.30/3W
1 R182
R174
1 0K 2 K
P C101 D1
R 156 R 175
6
C1 4 1
HZSZA-285
ZD153
2.7K
C 117 6D1
3 2 300 HZSZA-284
R157
0.68u
22 00U/16 V
HZSZA-283
6D1
D103
R132 T LP521-1 51 0 Q154 HZS 7B-2
R124
Q 155
ZD
C 1815
HZS6A-1282 D TC114ES
D181
R1
ERA82-0 04
R123
1
220/2W
3 90K
3 9 R232
ZD151 ZD1 81
1SS120
HZS 6A-2 HZS 6A-2
1
F1
D203 ZD152
1 0A/12 5V
ERA82 -004 PC10 2
RD39JSAB 3
D 104
6
R 126 1
ERB43 -04
5
R168
2
1 2 100K/1W 10k R169
C118
R125
TLP541G
L N 27 K
4 510
0.01u
D154
C N1 D204
ERB43-04 1SS1 20
D254
T 201 1SS120
R231
7
D153
1SS120
0.22/2W
R218
C211 R 154
100k/1W 5 14
6
D252
2 K
ERA82-0 04
560u/200V
ZD154
C156
R155
4
20 K
C155 HZS6A-2
3300p/115 33u/16 V
C2.2KV
F
13 0. 1u
B2 01
D251
201
Q* C213 R211
F10P10Q
CN3
K 1855 1
3 10
0. 1u 300/1W 1
ch.A
2
F 2
3
3 +35V /1.5 A
ERA82-004
C21 6 4
Q4202
D201
5
V D231
3300p/1.2KC214 C 4 08R215 Q2013 E RA82-00 4 6 G pA
0
A 1 5
470 0p
R272
12
D202 2 70
C 251 C 252 Q253 271
R
R213 5.6K
A1015
1SS120
R216
4.7k
270
R221 1.5kR273
R219
R217 3300uX50V
/
2
9
10 K 1.2K
4.7K R 214 1
270 R270
R2 20 C212
IC20 1 3 1 1 0K
100u
2.4K
NJM 4 31 2 25V
2
11
R212
Heatsink
(TY101,Q101,Q201,D151,D251)
0.30/3W
1
Not mounted
(C181)
P C201
R256
4
1
2
3 300
R257
TLP 521-1 510
D281
1S S120
A-10
Figure A-5. C124 PSB Board Circuit Diagram
Rev.A
R159 R160
R158
1 00K 4.75K L1 51
1 0K
C1 59
ZD155 LP201-2R5SD
R1 81
Q151
84.5K HZS6A1L
A1 469 R1 53
560p
DB101
IC151
0.22
1
D5SBA60
T101 R161
TL4 94
D155
1 1 1 1 1 1 1
2W
R1 31
6 5 4 3 2 1 0 9
20
7 ERC81
- C
+ R OV E E
R151 - 004
3 I OC C 2 2 1 R152
I
0.22/2W
2 2 C C154
C31
4 R128 470/2W
D152
C111 X2 R164 1000u
4700p 5
100K/1W
2 1 4 + - D G
10 V
IFIT C R N C 100
6 R162
1 1B C T T D 1 B1 51
150u/400V ERA82 -004
4.7 1 2 3 4 5 6 7 8
4.7 3 00
4.7 CN2
R16 6
TF
5W 5W 5W 4 9
QA15620 R165
R163
1 8
200K
R3 B101 R118 0
17 +5V/1.0A
R 2 R4 1k
R16 7 3.6K
TY101
* C 115 100K/1W
1 3 GL
8
C 158
C8
3300p/1.2KV 3K C181
*
Q101
470 0p 0.01u
S M8JZ47A C 113 R111 D151
0. 1u
C2 K16 92 1
F10P10Q
F 300/1W
C11 6 0. 1u 3
1
1 0 ch.B
2
3300p/1.2KV 2
3
0.22u ERA82-004 3 +35V /1.5 A
Q102
C9 D101 4
C4408
31 5
103
Q1015 D1RA82-004 Gp B
4 70 0p C1 14 R1 15
D102 E 6
A
R170
C3 C4
4700p
R172
270
10K
R113 1 2 C152
C151
4700p 1SS12 0
4700p R116 R1 71 5.6K
4.7k
27 0
Q153
R119
R121 1.5kR173
X2 A 101 5
9 3300u/50V
10K
R 114 R117
1.2K
4.7K
27 0
1
2 4
C112
R120
1
IC101 3 10 0u
L1
2.4K
25V
R 112
NJM 4 31 C157
ELF18D850 Z 1 3 2
2
1 1
470u/6.3V
0.68/3W
1 R182
R174
ZD1
HZS6A-285 1 0K 2 K
PC101
R156
C1 R175
D1
6
C117 HZSZA-284
2.7K
5 1 ZD153
3 00 ZD
0.68u 2200u/16V 2
R157 HZS6A-183
4
2
510 ZD
R124 R132 D103
2
HZS6A-182 Q154 HZS7B-2
Q155
TLP634
R 1 D181 C1815
DTC1 14ES
R123
220/2W
ERA82-0
R2321 04 (D4-GB-LF2)
390K/0.5W
39
ZD151
D104 1 1 SS120 ZD181
ERB38-05 HZS6A-2 HZS 6A-2
D20 3
PC102 ZD152
ERA82-00 4
A
TF51 H/250V RD39JSAB3
R127 R126 6
5 1
R168
C118
100K/1W 100K/1W
2 10 k 69
R1
R 125
1 2
TLP647J(D4 -L F2)
10K
510
0.01u 4
L N
D 154
04
DE2RB38 -05
CN1
1SS1 20
D254
1 SS120
T20 1
R231
7
D153
1SS 120
R228 0.22/2W
R154
100K/1W 5
C211 14
6
D252
2K
150u/400V ERA82-004
ZD154
4 C155 R155 C 156
0 .1 u
20K HZS6A-2
F 3 3u/16V
R218
C21 5 01
B2
13
100K/1W
3300p/1.2KV
Q201
C213 R211 D251
K1*692 CN3
1
0.1 u
C21 6 F 300/1W
Heatsin k (TY1 01,Q101,Q201,D151,D251) F10P10Q
3
1 0 1
ch.A
2
2
3300p/1.2KV
3
Q202 ERA82-004 3 + 35V/1.5A
Not mounted 4
(C181) C4408 D201
5
203 D231
C214 Q1015 Gp A
D202 R 215
A
6
47 00p
ERA82-004
R 272
270
Q253
1SS120 1 2 C 251 C252 5.6K
R213 R271
R216
A 1015
4.7k
R273
270 1.5k
R221 R219
3300u/50V
X2 R270 1.2K
9
R217
10K R 214
4.7K 10K
270 1
R220 C212
1
I C201 10 0u
2.4K
NJM4 31 3 2 25V 2
1 1
R212
0.68/3W
1
PC201 R256
5
1
300
R257
4 2
51 0
D281
TLP634
(D 4-GB-LF2)
1SS1 20
Rev.A
Figure A-6. C124 PSE Board Circuit Diagram
A-11
EPSON