Star Micronics NX-2460C Bedienungsanleitung
DOT MATRIX PRINTER
NX-2460C
NX-2460
LC-240C
LC-240
TECHNICAL MANUAL
[THIRD EDITION]
NOTICE
•Allrightsreserved.Reproductionofanypartofthismanualinany
form whatsoever, without STAR’s express permission is forbid-
den.
•The contents of this manual are subject to change without notice.
•All efforts have been made to ensure the accuracy of the contents
of this manual at the time of going to press. However, should any
errors be detected, STAR would greatly appreciate being in-
formed of them.
•The above notwithstanding, STAR can assume no responsibility
for any errors in this manual.
© Copyright 1996 Star Micronics Co.,Ltd.
INTRODUCTION
This manual is an introduction to dot matrix printers as shown below.
It is intended for use as a reference for periodic inspections and maintenance procedures.
This manual is prepared for use at a technical level and not for the general user.
Model Type Destination
NX-2460C Colour For American, Asia market
NX-2460 Monochrome For Asia market
LC-240C Colour For European and Pacific market
LC-240 Monochrome For European market
•This manual is divided into the following sections:
Chapter 1 General Specifications
Chapter 2 Theory of Operation
Chapter 3 Adjustments
Chapter 4 Parts Replacement
Chapter 5 Maintenance and Lubrication
Chapter 6 Troubleshooting
Chapter 7 Parts List
•Thisprinterdoesnothaveapowerswitch.Even if the LED isoff,unplugthepowercordtoturnthe printer off.
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•First edition : Oct. 1994
Second edition : Sep. 1995
Third edition : Apr. 1996
CHAPTER 1
GENERAL SPECIFICATIONS
1. External Appearance and Composition ..............................................................3
2. Control Panel.........................................................................................................5
3. Parallel Interface ...................................................................................................6
3-1. General Specifications ...........................................................................................6
3-2. Connector Signals ..................................................................................................6
4. Serial Interface (optional) .....................................................................................7
4-1. General Specifications ...........................................................................................7
4-2. Connector Signals and Functional Descriptions ................................................ 7
4-3. DIP Switch Settings ................................................................................................8
5. EE-PROM Mode .....................................................................................................9
5-1. Outline...................................................................................................................... 9
5-2. Explanation of Special Control Codes ..................................................................9
5-3. EE-PROM Map .......................................................................................................10
5-4. Rewriting the EE-PROM........................................................................................15
1
– 2 –
GENERAL SPECIFICATIONS
– 3 –
GENERAL SPECIFICATIONS
1. External Appearance and Layout
Fig. 1-2 Front View of the Printer
Fig. 1-1 External dimensions
232mm
390mm
158mm
Control panel
Front cover
Automatic sheet feeder Guide Wire
Interface connector
– 4 –
GENERAL SPECIFICATIONS
Fig. 1-3 Front Cover removed
Fig. 1-4 Diagram of Internal Layout
Paper tray cover
Platen
Print head
Ribbon Cartridge
Carriage
Motor
Cable Holder
Carriage
Print Head
Paper Feed Motor
Printer Mechanism
Main Logic Board
Control Panel Board
Power Supply Unit
Home Positon SW
(Monochrome)
Home Positon Board
(Colour)
Release Lever SW
– 5 –
GENERAL SPECIFICATIONS
2. Control Panel
(1) PAPER Switch
ASF paper end SW…once manual insert
SW…twice ASF insert
paper On-line paper eject
Off-line Short time sw push LF
Long time sw hold paper eject
Continue paper end SW paper insert
paper paper On-line paper park
Off-line Short time sw push LF
Long time sw hold FF
(2) READY SWITCH/SLEEP MODE
Pushing the switch : Set printer on/off-line
Holding down the switch : SLEEP MODE
(3) PAPER SWITCH & READY SWITCH
While in SLEEP MODE : Executesselfprint1,self print2orHEX-DUMPaccordingtothe EDSsettings.
When the power is turned on : Ignored
(4) READY LAMP
Power is on (ON-LINE) : Lamp ON
Power is on (OFF-LINE) : Slow-blinking
No paper : Slow-blinking
The printer stops after detecting an overheated printer head. : Slow-blinking
Error : Fast-blinking
Push
Hold
PAPER READY
LF
FF On-Line
Sleep
PAPER SW READY-LAMP READY SW
SLEEP MODE SW
PAPER &READY SW
– 6 –
GENERAL SPECIFICATIONS
3. Parallel Interface
3-1. General Specifications
Item Specifications
Interface Centronics-compatible
Synchronization System Via externally supplied STROBE pulse
I/F Protocol Using ACK and BUSY signals
Logic Level Compatible with TTL level
ACK
Data
STROBE
(EDS G-1 : ON)
STROBE
(EDS G-1 : OFF)
BUSY
2.6ms
t : More than 0.5ms
2.6ms
tttt
Fig. 1-5 Timing Charts for Parallel Interface
3-2. Connector Signals
Pin Name Function
1 STROBE Goes to low for 0.5µs when active.
2 DATA0 High when active.
3 DATA1 High when active.
4 DATA2 High when active.
5 DATA3 High when active.
6 DATA4 High when active.
7 DATA5 High when active.
8 DATA6 High when active.
9 DATA7 High when active.
10 ACK 10µs low acknowledges receipt of data
11 BUSY Printer sets line low when ready to receive data.
12 PAPER High when paper runs out. Can be disabled with the user setup utility.
13 SELECT High when printer is on-line.
14 AFXT Normally high.
15 Not connected.
16 SIGNAL GND Signal ground
17 CHASSIS Chassis ground (isolated from signal ground)
18 +5V +5V DC output from printer
19 ~ 30 GND Twisted pair ground return
31 RESET Printer is reset when this signal goes low.
32 ERROR Low when printing cannot continue due to an error.
33 EXT GND External ground
34,35 Not connected
36 SELECT IN Normally low.
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3
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