Star AR-1000 Technical Manual
DOT MA TRIX PRINTER
AR-1000
TECHNICAL MANUAL
[
SECOND EDITION
]
NOTICE
• All rights reserved. Reproduction of any part of this manual in any
form whatsoever, without STAR’s express permission is forbidden.
• 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 informed of them.
• The above notwithstanding, STAR can assume no responsibility
for any errors in this manual.
© Copyright 1997 Star Micronics Co.,Ltd.
INTRODUCTION
This manual describes the AR-1000 dot matrix printer.
It is designed for use as a reference for periodic inspections and maintenance procedures to be executed
by service personal. It is not intended for the general user. Users of this manual should have a basic
knowledge and understanding of the English language.
•
This manual is divided into the following sections:
Chapter 1 General Specifications
Chapter 2 Adjustments
Chapter 3 Parts Replacement
Chapter 4 Maintenance and Lubrication
Chapter 5 Parts List
•
First edtion : Oct.1997
Second edtion : Aug.1998
1
5
2
3
4
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CHAPTER 1
GENERAL SPECIFICATIONS
1. General Specifications ............................................................................................3
2. External Appearance and Composition.................................................................5
3. Parallel Interface ......................................................................................................7
3-1. General Specifications ..................................................................................7
3-2. Connector Signals .........................................................................................7
4. Serial Interface .........................................................................................................8
4-1. General Specifications ..................................................................................8
4-2. Connector Signals and Functional Descriptions ........................................8
5. Block Diagram.......................................................................................................... 9
1
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– 3 –
1. General Specifications
Printing System Serial Impact Dot-Matrix
Printing Speed Pitch Draft (cps/dpi) LQ (cps/dpi)
Pica (10 cpi) 250/120H 83/360H
Elite (12 cpi) 300/120H 100/360H
Semi-condensed (15 cpi) 375/120H 125/360H
Condensed pica (17.1 cpi) – 143/360H
18 cpi 300/180H –
Condensed elite (20 cpi) 250/240H 167/360H
H: half-dot
Print Direction Draft: Bi-directional/Uni-directional logic seeking
(Selectable by Command)
LQ: Bi-directional/Uni-directional logic seeking
(Selectable by Command)
Bit-Image: Bi-directional/Uni-directional logic seeking
(Selectable by Command)
Print Head Number of pins: 24
Life: 200 million dots/pin (Normal Mode)
100 million dots/pin (Multi Part Mode)
Line Spacing 1/6″, 1/8″
n/60″, n/180″, n/216″,n/240″, n/360″: software
Environment Operating temperature: 41˚F to 95˚F (5˚C to 35˚C)
Storage temperature: -22˚F to 149˚F (-30˚C to 65˚C)
Operating humidity: 30% to 80% (noncondensing)
Storage humidity: 20% to 90% (noncondensing)
Paper Cut-sheet
Paper width: 3.0″ to 8.3″ / 76.2 to 210 mm
Paper length: 2.5″ to 11.7″ / 63.5 to 297 mm
Paper weight (1-ply): 14 to 42 lbs / 52 to 156 g/m2 / 45 to 135 kg
Multi-part: 11 to 14 lbs / 40 to 52 g/m2 / 34 to 45 kg; pressure
sensitive paper. Total thickness: 0.014″/0.35mm
– 4 –
Pass-Book
Paper width: 4″ to 6″ / 101.6 to 152.4 mm
Paper length: 5.0 - 8.0” / 127.0 - 203.2 mm(With the Pass-book opening.)
Paper thickness: Max 2.0mm (Total thickness)
Paper number: Max 14 (Except cover)
Interface Standard: RS-232C serial
Option: Centronics parallel or RS-232C serial
Ribbon Type On-carriage, dedicated
Monochrome: Black only
Ribbon Life P24: 2million characters (ASCII Draft)
Power Supply 220V AC +15%/-15%, 50Hz
Power Consumption 13W during stand-by
55W during ASCII draft printing
Options IS-NP192 Serial interface unit
IS-NPC Parallel interface unit
Fig. 1-1 External Dimensions
320mm
12.6"
410mm
16.1"
194.5mm
7.66"
Weight 18.94 lbs/8.6kg
– 5 –
2. External Appearance and Composition
Fig. 1-3 Rear View of the Printer
Fig. 1-2 Front View of the Printer
Front cover
Platen knob
Control panel
Power switch
Document table
Document
table
extension
Power terminal
Serial interface
connector
– 6 –
Fig. 1-4 Print Cover Removed
Fig. 1-5 Diagram of Internal Layout
Platen
Print Head
Gap Motor
Carriage Motor
Paper Feed Motor
Shutter Motor
Main Logic Board
Power Supply Unit
Control Panel Board
– 7 –
Fig. 1-6 Timing Charts for Parallel Interface
ACK
Data
STROBE
(EDS B-6 : ON)
STROBE
(EDS B-6 : OFF)
BUSY
5µs
t : More than 0.5µs
5µs
tttt
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
Pin Name Function
1 STROBE Goes low for ≥ 0.5µs when active.
2 DATA0
3 DATA1
4 DATA2
5 DATA3
6 DATA4
7 DATA5
8 DATA6
9 DATA7
10 ACK 10µs low to acknowledge receipt of data.
11 BUSY Printer sets line low when ready to receive data.
12 PAPER High when paper runs out.
13 SELECT High when printer is on-line.
14 AFXT Printer ignores this signal.
15 Not used.
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 error.
33 EXT GND External ground
34~35 Not used
36 SELECT IN Printer ignores this signal.
3-2. Connector Signals
These signals represent information for the 1st through 8th bit of
parallel data, respectively. Each signal is HIGH when data is logical
1, and LOW when logical 0.
– 8 –
4 Serial Interface
4-2. Connector Signals and Functional Descriptions
4-1. General Specifications
Item Specifications
Interface RS-232C level
Synchronization System Asynchronous
Baud rate
300 - 19,200 bits per second (BPS) [selectable]
300, 600, 1200, 2400, 4800, 9600, 19200 BPS
Word length
Start bit: 1 bit
Data bit: 7 or 8 bits (selectable)
Parity bit: Odd, Even or None (selectable)
Stop bit: More than 1 bit length
Signal polarity
Mark: Logic ″1″ (–3V to –15V)
Space: Logic ″0″ (+3V to +15V)
Handshaking
DTR
XON/XOFF
Pin No. Signal name Direction Function
1 F-GND — Printer chassis ground.
2 TXD OUT This pin carries data from the printer
3 RXD IN This pin carries data to the printer.
4 RTS OUT Always space.
5 CTS —
6 NC Unused.
7 S-GND — Signal ground.
8~10 NC Unused.
11 RCH OUT
12 NC Unused.
13 NC Unused. (Signal ground.)
14~19 NC Unused.
20 DTR OUT The printer sets this signal to space when it is ready to receive data.
21~25 NC Unused.
This signal is space when the computer is ready to send data.
The printer does not check this pin.
The printer sets this signal to space when it is ready to receive data.
This line carries the same signal as pin 20.
– 9 –
5 Block Diagram
The block diagram of this printer is shown in Fig. 1-7.
Data (From Host Computer)
LED
Switch
Control
panel board
Power
supply unit
AC Power
interface
Driver
Gate array
CPU
RAM
Masked ROM
8M
EE-PROM
Paper feed
motor
Carriage
motor
Print head
Main logic board
Printer
mechanism
Detectors
UVE-PROM
1M
Fig. 1-7 Block Diagram
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CHAPTER 2
ADJUSTMENTS
This printer has undergone various adjustments so that it will attain a given standard of performance.
In this chapter, a brief explanation is given of the methods for making adjustments.
Follow the instructions when performing maintenance inspections or when replacing parts to correct malfunctions.
1. Adjustment of Gap Between Print Head and Platen........................................... 13
2. Adjustment of Timing Belt Tension......................................................................
14
2
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– 13 –
1. Adjustment of Gap Between Print Head and Platen
Procedures Printer Operations LED
:ON :OFF :Blinking
1
2
3
4
Power on the printer while
holding down the [SW3] and
[SW4] buttons.
5 Short beeps and enters the head gap
adjustment mode.
Insert paper of 55 Kg keeping
it to the most left.
Remove paper.
Loads paper authomatically,senses
paper thickness and ejects it backward
while keeping the current head
gap.(Insert paper again if ejected
forward.)
Paper needs to be removed.
Adjustment(1st position)
Press [SW2] to widen gap.
Press [SW3] to narrow gap.
Press [SW1] to move carriage.
+Area:[LED A] LED is blinking.
-Area:[LED B] LED is blinking.
<A,B,C>
Set head gap at A,B and C.
Head Gap : 0.39-0.47mm
<D>
Set card holder gap at D.
Standard : 0.16-0.30
Finish and memory
Press [SW4] button.
Memorizes head gap and exits from
the head gap adjustment mode.
LED BLED A
SW1
SW2
SW3
SW4
LED BLED A
SW1
SW2
SW3
SW4
LED BLED A
SW1
SW2
SW3
SW4
LED BLED A
SW1
SW2
SW3
SW4
A. Left
B. Right
C. Center
D. Right of center
Carriage
ACDB
– 14 –
2. Adjustment of Timing Belt Tension
(1) Remove the front case unit according to the procedures described in chapter 3.
(2) Move the carriage unit [1] up to the extreme right position.
(3) Move the screw [3] fixing tension lever assembly [2] approximately 1mm to loosen the tension, then tighten the
screw.
The timing belt tension [4] is determined by the spring [5].
Fig 2-1 Adjustment of Timing Belt Tension
[1]
[2]
[4]
[3]
[5]
CHAPTER 3
PARTS REPLACEMENT
This chapter explains disassembly and reassembly of the printer. Note the following regarding disassembly and
reassembly.
1. Disconnect the printer from the wall outlet before servicing it.
2. Assembly is the reverse of disassembly unless otherwise specified.
3. After reassembly, coat the screw heads with locking sealant.
4. Lubrication information is not provided in this chapter. Refer to section 2 in chapter 4.
1. Upper Case Unit .....................................................................................................16
2. Printer Mechanism ................................................................................................. 16
3. Main Logic Board Unit ........................................................................................... 17
4. Power Supply Unit ................................................................................................. 17
5. Print Head ...............................................................................................................18
6. Carriage Unit ..........................................................................................................18
7. Carriage Motor Assembly .....................................................................................19
8. Shutter Motor Assembly........................................................................................19
9. Roller Guide Shaft A Assembly ............................................................................20
10. Roller Guide Shaft C Unit...................................................................................... 20
11. Shutter Assembly...................................................................................................21
3
– 16 –
(1) Turn off the power switch.
(2) Remove the power cord from the AC output socket.
(3) Remove
• Platen knob [1]
• Upper case unit [2]
Detach the three hooks[2-1] of the upper case
unit, and lean the upper case forward for removal.
• Control panel board [3]
Detach the two hooks.
1. Upper Case Unit
2. Printer Mechanism
[2-1]
[2]
[1]
[3]
[1]
[1]
[1]
[4]
[3]
[2]
[3]
[1]
(1) Remove
Upper case unit as described in section 1.
• Four screws [1]
• Four connectors [2]
• Four cables [3]
• Printer machanism [4]
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