Epson DLQ-3000 Minerva+ User manual

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-

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).
DLQ-3000 (MINERVA+) Product Description
Rev.A 1-1

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 (n)
DATA
-STORBE
BUSY
-ACKNLG
500 ns (min.)
500 ns (min.) 500 ns (min.) 0 (min.)
0 (min.)
500 ns ~10 µs
0 (min.) 500 ns (max.)
DATA (n+1)
Figure 1-1. Data Transmission Timing
Product Description DLQ-3000 (MINERVA+)
1-2 Rev.A

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)
Pin No. Signal Name Return
GND Pin I/O Description
1STROBE 19 In Strobe pulse. Input data is latched at the falling
edge of this signal.
2-9 DATA1-8 20-27 In
Parallel input data to the printer.
Active-HIGH input.
LSB: DATA1
MSB: DATA8
10 ACKNLG 28 Out Indicates that data has been received and the
printer is ready to accept more data.
11 BUSY 29 Out A HIGH level means the printer cannot accept
further data.
12 PE 30 Out A HIGH level means a paper-out error. Always
the logical opposite of the ERROR signal.
13 SLCT - Out Always at a HIGH level (pulled up to +5 V
through a 1K-ohm resistor).
14 AFXT - In
Auto feed execution means that a line feed is
automatically performed upon input of a CR
code. Checked when the printer is initialized.
Active-LOW signal.
31 INIT 16 In Initialize printer. Minimum 50 µs pulse is
necessary. Active-LOW signal.
32 ERROR - Out A LOW level means that an error has occurred.
36 SLIN 30 In Not used.
18,35 Logic H - Out Pulled up to +5V and shorted to +5V via Schottky diode, making these signals appear low to the
host when the printer is turned off.
17 Chassis GND - - Chassis GND
16,19-30,
33 GND - - Signal GND
15,34 NC - - Not used. Not connected.
Note: In/Out refers to the direction of signal flow as viewed from the printer.
DLQ-3000 (MINERVA+) Product Description
Rev.A 1-3

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]
MFG:EPSON;
CMD:ESCPL2-00;
MDL:DLQ-3000;
CLS:PRINTER;
[00H][34H]
MFG:EPSON;
CMD:PRPXL24-01;
MDL:DLQ-3000;
CLS:PRINTER;
Product Description DLQ-3000 (MINERVA+)
1-4 Rev.A

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)
Pin No. Signal Name Return
GND Pin I/O Description
1 Host Clk 19 In Host clock signal.
2-9 DATA 1-8 20-27 In
Parallel input data to the printer.
Active-HIGH input.
LSB: DATA1
MSB: DATA8
10 Ptr Clk 28 Out Printer clock signal
11 PtrBusy /
Data Bit -3,7 29 Out Printer BUSY signal and reverse channel transfer data bit 3 or 7.
12 Ack Data Req /
Data Bit -2,6 28 Out Acknowledge data request signal and reverse channel transfer data bit 2 or 6.
13 Xflag /
Data Bit -1,5 28 Out Xflag signal and reverse channel transfer data bit 1 or 5.
14 Host Busy 30 In Host busy signal
31 INIT 30 In Not used.
32 Data Avail /
Data Bit -0,4 29 Out Data available signal and reverse channel transfer data bit 0 or 4.
36 1284-Active 30 In 1284 active signal
18 Logic H - Out A high signal indicates that all other signals
source by the peripheral are in a valid state.
35 +5V - Out This line is pulled up to +5V through 3.3K Ω
resister.
17 Chassis - - Chassis GND
16,19-30
,33 GND - - Signal GND
15,34 NC - - Not used. Not connected.
Note: In/Out refers to the direction of signal flow as viewed from the printer.
DLQ-3000 (MINERVA+) Product Description
Rev.A 1-5

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.
Product Description DLQ-3000 (MINERVA+)
1-6 Rev.A

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.
TYPE-B I/F
PARALLEL I/F
CN10-12
SERIAL I/F
CN7
CN8
CN6
CN9
CN1
CN2
CN3
CN4
CN5
CN13
CN14
CN 15,16 temp.
AC
Fan motor
C124PSB/PSE
Printer MechanismC124 MAIN-B
Panel
Cover Open Sensor
Printhead
CS Motor
Film Ribbon Sensor
Color Ribbon Sensor
PEWSensor Assembly
CR Motor Assembly
PF Motor Assembly
LOAD Sensor Assembly
External Fan
PF Sensor
HP Sensor
Figure A-1. Cable Connection
DLQ-3000 (MINERVA+) Service Manual Appendix
Rev.A A-1

Table A-2 through appendix lists connector pin assignments.
Table A-1. Connector Assignment
Board Connector Pin Description
BOARD
ASSY.,C124
MAIN-B
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
CN 7 36 Bi-Directional parallel I/F
CN 8 25 Serial I/F
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.
C124 SUB
BOARD
CN 4 From CN1 to Printhead output signal
CN 5 From CN2 to Printhead output signal
CN 6 From CN3 to CS motor, Color ribbon / film ribbon / CS
home sensor
BOARD
ASSY., C124
PSB / PSE
CN 1 2 AC input line
CN 2 10 DC output ( +5V, +35V )
CN 3 6 DC output ( +35V )
Appendix DLQ-3000 (MINERVA+) Service Manual
A-2 Rev.A

Table A-2. Connector Pin Assignment - CN7
Pin I/O Name Description (Forward / Reverse)
1I
STOBE / Host
Clk Data strobe / Host clock signal
2 - 9 I DATA 0-7 Parallel data bit 0 to 7
10 O ACKNLG /
PtrClk Acknowledge / Printer clock signal
11 O BUSY / PtrBusy, Data
Bit-3,7 Printer busy and reverse channel transfer data bit 3 or 7
12 O PE / AckDataReq,
Data Bit-2,6
Paper out / Acknowledge data request and reverse channel
transfer data bit 2 or 6
13 O SLCT / Xflag,
Data Bit-1,5 Always HIGH at printer power on / Xflag and reverse channel transfer data bit 1 or 5
14 I AFXT / Host
Busy Not used / Host busy signal
15 - NC Not used and not connected.
16 - GND Signal Ground
17 - Chassis GND Chassis ground
18 O Logic-H Pulled up 5V / A HIGH signal indicates that all other signals
soursed by the peripheral are in valid state.
19-30 - GND Signal Ground
31 I INIT / INIT Initialize signal / Not used
32 O ERROR / data avail, data
bit-0,4 Error signal / Data available and reverse channel data bit 0,4
33 - GND Signal Ground
34 - NC Not used and not connected.
35 O +5V Pulled up 5V
36 I SLIN /
1284-Active Not used. / 1284-active signal
Note: The signal direction I/O are viewed from the connector on the board.
DLQ-3000 (MINERVA+) Service Manual Appendix
Rev.A A-3

COM14 20
COM10/18 13
COM6/22 2
COM2 14
COM23 10
COM3/19 4
COM7/15 6
COM11 3
20 COM14
13 COM10/18
2 COM6/22
14 COM2
10 COM23
4 COM3/19
6 COM7/15
3 COM11
HD2 17
HD3 9
HD6 15
HD7 19
HD10 16
HD11 11
HD14 12
HD15 1
HD18 18
HD19 8
HD22 7
HD23 5
17 HD2
9 HD3
15 HD6
19 HD7
16 HD10
11 HD11
12 HD14
1 HD15
18 HD18
8 HD19
7 HD22
5 HD23
CN1
Head Conn 1
from mainboard
CN 4
Head conn 1
to Head
COM12/16 10
COM8/20 15
COM4/24 11
COM1/21 1
COM5/17 7
COM9/13 2
10 COM12/16
15 COM8/20
11 COM4/24
1 COM1/21
7 COM5/17
2 COM9/13
HD1 13
HD4 17
HD5 3
HD8 18
HD9 5
HD12 12
HD13 4
HD16 16
HD17 5
HD20 9
HD21 8
HD24 14
TENP 19
TEMP 20
13 HD1
17 HD4
3 HD5
18 HD8
5 HD9
12 HD12
4 HD13
6 HD16
5 HD17
9 HD20
8 HD21
14 HD24
19 TEMP
20 TEMP
CN2
Head Conn 2
from mainboard
CN 5
Head conn 2
to Head
+5V 1
PEWR/L 5
PWLCOM 6
PWRCOM 2
RFCOM 7
RFA 11
RF_A 9
RFB 10
RF_B 8
CSHOME 3
GND 4
COLOR 13
FILM 14
GND 12
1 +5v
5 PEWR/L
5 PWLCOM
2 PWRCOM
7 RFCOM
11 RFA
9 RF_A
10 RFB
8 RF_B
3 CSHOME
4 GND
13 COLOR
14 FILM
12 GND
CN1
Head Conn 1
from mainboard
CN 4
Head conn 1
to Head
Figure A-4. C124 MAIN SUB Board Circuit Diagram
DLQ-3000 (MINERVA+) Service Manual Appendix
Rev.A A-9

-004
2W
L151
LP201-2R5SD
Q151
A1469R153
0.22
D155
ERC81
R152
R164
100
C154
1000u
10V
X2
R158
100K
C159
560p
+I
1
1
-I
1
2
F
B3
D
T
C4
C
T5
R
T6
G
N
D7
C1
8
+I
2
1
6-I
2
1
5
R
O
1
4
O
C
1
3
V
C
C
1
2
C2
1
1
E2
1
0
E1
9
IC151
TL494R161
20
R162
300
ZD155
HZS6A1L
R160
10K
R151
470/2W
R159
4.75K
R181
84.5K
D152
ERA82-004
14
6
T101
5
7
R131
0.22/2W
R118
100K/1W
C111
560u/200V
1
3
2
4
DB101
RBV-2506
*
TF
C3
3300p
C4
3300p
C2
0.22u
TY101
SM12GZ47A
R3
2.25W
R2
2.25W
C8
2200p
C31
2200p
C116
3300p/1.2KV
*
F
B101
Q101
K1855
C114
4700p
Q102
C4408
Q103
A1015
D102
1SS120
R115
270
C113
0.1u
R116
270
C115
3300p/1.2KV
R111
300/1W
D101
ERA82-004
10
4
12
13
3
D131
ERA82-004
1
3
2
D151
F10P10Q
R170
10K
Q152
A1680
R166
200K
R167
3K
C158
0.01u
R163
3.6K
R172
5.6K
B151
R165
1k
GL
+5V/1.0A
2
3
4
5
6
7
8
1
CN2
+35V/1.5A
ch.B
10
GpB
9
C181
0.1u
R173
1.2K
R171
1.5k
R182
2K
Q153
A1015
C157
470u/6.3V
R174
10K
R175
2.7K
C151
R156
300
ZD185
HZS6A-2
ZD184
HZS6A-2
C152
3300u/50V
X2
25V
R113
4.7k
R117
1
C112
100u
1
2
4
3
PC101
TLP521-1
9
2
11
1
R114
270
2
1
3
IC101
NJM431
R119
10K
R112
0.30/3W
R121
4.7K
R120
2.4K
C1
0.68u
1
2
3
4
L1
ELF18D850C
N
L
R1
390K
2
1
CN1
F1
10A/125V
D104
ERB43-04
R126
100K/1W
R124
220/2W
C117
2200U/16V
R123
39
D203
ERA82-004
R232
1
1
2
6
5
4
PC102
TLP541G
R125
27K
R157
510
R168
10k
C118
0.01u
D103
ERA82-004
R132
1
D181
1SS120
ZD151
HZS6A-2
ZD181
HZS6A-2
ZD182
HZS6A-2
ZD183
HZS6A-2
R169
510
Q154
C1815
Q155
DTC114ES
ZD153
HZS7B-2
ZD152
RD39JSAB3
D254
1SS120
D153
1SS120
R154
2K
R155
20K
ZD154
HZS6A-2
C156
33u/16V
C155
0.1u
D154
1SS120
D252
ERA82-004
4
14
6
T201
5
7
R231
0.22/2W
D204
ERB43-04
R218
100k/1W
C211
560u/200V
C216
3300p/1.2KV
*
B201
Q201
K1855
C214
4700p
Q202
C4408
Q203
A1015
R215
270
R214
270
F
D202
1SS120
R219
10K
C213
0.1u
R216
270
R221
4.7K
C215
3300p/1.2KV
D201
ERA82-004
R213
4.7k
R217
1
R211
300/1W
10
9
12
13
3
D231
ERA82-004
F
1
32
D251
F10P10Q
C251C252
3300u/50V
X2
R270
10K
Q253
A1015R271
1.5k
R272
5.6K
R273
1.2K
1
CN3
2
3
6
5
4
+35V/1.5A
ch.A
GpA
R256
300
D281
1SS120
25V
C212
100u
1
2
4
3
PC201
TLP521-1
R257
510
2
11
1
2
1
3
IC201
NJM431
R212
0.30/3W
R220
2.4K
(TY101,Q101,Q201,D151,D251)
(C181)
Heatsink
Notmounted
Figure A-5. C124 PSB Board Circuit Diagram
Appendix DLQ-3000 (MINERVA+) Service Manual
A-10 Rev.A

-004
2W
L151
LP201-2R5SD
Q151
A1469R153
0.22
D155
ERC81
R152R164
100
C154
1000u
10V
X2
R158
100K
C159
560p
+I
11
-I
12
F
B3
D
T
C4
C
T5
R
T6
G
N
D7
C
18
+I
2
1
6-I
2
1
5
R
O
1
4O
C
1
3
V
C
C
1
2
C
2
1
1
E
2
1
0
E
1
9
IC151
TL494R161
20
R162
300
R160
10K
R151
470/2W
R181
84.5K
R159
4.75K
ZD155
HZS6A1L
D152
ERA82-004
14
6
T101
5
7
R131
0.22/2W
R128
100K/1W
C111
150u/400V
C31
4700p
1
3
2
4
DB101
D5SBA60
*
TY101
SM8JZ47A
5W
C3
4700p
C4
4700p
C2
0.22u
R2
4.7
TFR3
4.7
5W
R4
4.7
5W
C8
4700p
C9
4700p
*
F
B101
Q101
K1692
C114
4700p
Q102
C4408
Q103
A1015
D102
1SS120
R115
270
C113
0.1u
R116
270
R118
100K/1W
C115
3300p/1.2KV
C116
3300p/1.2KV
R111
300/1W
D101
ERA82-004
10
4
12
13
3
D131
ERA82-004
1
32
D151
F10P10Q
R170
10K
Q152
A1680
R166
200K
R167
3KC158
0.01u
R163
3.6K
R172
5.6K
B151
R165
1k
GL
+5V/1.0A
2
3
4
10
5
8
6
9
7
ch.B
1
CN2
+35V/1.5A
GpB
C181
0.1u
R173
1.2K
R171
1.5k
R182
2K
Q153
A1015
C157
470u/6.3V
R174
10K
R175
2.7K
C151
R156
300
ZD185
HZS6A-2
ZD184
HZS6A-2
C152
3300u/50V
X2
25V
R113
4.7k
R117
1
C112
100u
1
2
5
4
PC101
TLP634
9
1
2
11
R114
270
2
1
3
IC101
NJM431
R119
10K
R112
0.68/3W
R121
4.7K
R120
2.4K
C1
0.68u
1
2
3
4
L1
ELF18D850Z
N
L
1
CN1
2
F1
T5AH/250V
R1
390K/0.5W
R127
100K/1W
D104
ERB38-05
R126
100K/1W
R124
220/2W
R123
39
C117
2200u/16V
D203
ERA82-004
R232
1
C118
0.01u
R125
10K
R157
510
R168
10k
1
2
6
5
4
PC102
TLP647J(D4-LF2)
(D4-GB-LF2)
D103
ERA82-004
R132
1
D181
1SS120
ZD151
HZS6A-2
ZD181
HZS6A-2
ZD182
HZS6A-2
ZD183
HZS6A-2
R169
510
Q154
C1815
Q155
DTC114ES
ZD153
HZS7B-2
ZD152
RD39JSAB3
F
D254
1SS120
D153
1SS120
C155
0.1u
R154
2K
R155
20K
ZD154
HZS6A-2C156
33u/16V
D154
1SS120
D252
ERA82-004
4
14
6
T201
5
7
R231
0.22/2W
D204
ERB38-05
R228
100K/1W
C211
150u/400V
*
B201
Q201
K1692
C214
4700p
Q202
C4408
Q203
A1015
R215
270
R214
270
F
D202
1SS120
R21910K
C213
0.1u
R216
270
R218
100K/1W
R221
4.7K
C215
3300p/1.2KV
C216
3300p/1.2KV
D201
ERA82-004
R213
4.7k
R217
1
R211
300/1W
10
9
12
13
3
D231
ERA82-004
1
32
D251
F10P10Q
C251C252
3300u/50V
X2R270
10K
Q253
A1015R271
1.5k
R272
5.6K
R273
1.2K
2
3
4
5
6
ch.A
+35V/1.5A
1
CN3
GpA
R256
300
D281
1SS120
25V
C212
100u
R257
510
1
2
5
4
PC201
TLP634
1
2
11
2
1
3
IC201
NJM431
R220
2.4K
R212
0.68/3W
(TY101,Q101,Q201,D151,D251)
(C181)
(D4-GB-LF2)
Heatsink
Notmounted
Figure A-6. C124 PSE Board Circuit Diagram
DLQ-3000 (MINERVA+) Service Manual Appendix
Rev.A A-11

EPSON