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EPSON IMPACT DOT 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 ;
t 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.
D ATA DATA (n) DATA (n+1)
500 ns (min.)
-STORBE
500 ns (min.) 500 ns (min.) 0 (min.)
B US Y
0 (min.) 500 ns (max.) 0 (min.)
-ACKNLG
500 ns ~10 ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo