Epson DLQ-3000 Minerva+ Bedienungsanleitung

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.

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

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