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LC-1511
LC-1521 Technical Manual
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DOT MATRIX PRINTER
LC-1511 LC-1521
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 1996 Star Micronics Co.,Ltd.
INTRODUCTION
This manual describes the LC-1511,1521 dot matrix printer. It is designed for use as a reference for periodic inspections and maintenance procedures to be executed by service personnel. 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 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6 Chapter 7 General Specifications Theory of Operation Adjustments Parts Replacement Maintenance and Lubrication Troubleshooting Parts List
· First edition
: Mar. 1996
Second edition : Aug. 1997
1 2 3 4 5 6 7
CHAPTER 1 GENERAL SPECIFICATIONS
1
1. 2. 3.
General Specifications.......................................................................................... 3 External Appearance and Composition ..............................................................6 Control Panel .........................................................................................................8
3-1. 3-2. Switch Combination Functions ............................................................................. 8 EDS Mode Settings ................................................................................................. 9
4.
Parallel Interface.................................................................................................. 10
4-1. 4-2. General Specifications ......................................................................................... 10 Connector Signals ................................................................................................ 10
5.
Serial Interface (optional) ................................................................................... 11
5-1. 5-2. 5-3. General Specifications ......................................................................................... 11 Connector Signal and Functional Descriptions (SPC-8K, IS-8H192) ............... 12 DIP Switch Settings (SPC-8K, IS-8H192) ............................................................ 12
6.
EE-PROM mode ................................................................................................... 13
6-1. 6-2. 6-3. 6-4. Outline ................................................................................................................... 13 Explanation of special control codes ................................................................. 13 EE-PROM MAP ...................................................................................................... 14 Rewriting the EE-PROM ....................................................................................... 17
GENERAL SPECIFICATIONS 1. General Specifications
Serial Impact Dot-Matrix Pitch LC-1521 Pica (10 cpi)
Printing System Printing Speed
LC-1511
Print Direction
Print Head
Line Spacing Character Matrix LC-1521
LC-1511
Environment
Elite (12 cpi) 90/240H Condensed pica (17 cpi) 127/240H Condensed elite (20 cpi) 150/240H Pica (10 cpi) 56/240H Elite (12 cpi) 67/240H Condensed pica (17 cpi) 95/240H Condensed elite (20 cpi) 112/240H H: half-dot Draft: Bi-directional logic seeking NLQ: Uni-directional/ bi-directional logic seeking (selectable) Bit-Image: Uni-directional/ bi-directional logic seeking (selectable) Number of pins: 9 Life: 200 million dots/pin (Normal Mode) 100 million dots/pin (Multi-Part Mode) 1/6", 1/8" 7/72", n/72", n/216" : software Pitch Draft NLQ 9 × 11H (Normal) Pica (10 cpi) 18 × 23H 9 × 8H (HS) Elite (12 cpi) 9 × 9H 18 × 19H Condensed pica (17 cpi) 9 × 11H 18 × 12H Condensed elite (20 cpi) 9 × 9H 18 × 10H Pica (10 cpi) 9 × 11H 18 × 23H Elite (12 cpi) 9 × 9H 18 × 19H Condensed pica (17 cpi) 9 × 11H 18 × 12H Condensed elite (20 cpi) 9 × 9H 18 × 10H 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% (non-condensing) Storage humidity: 20% to 90% (non-condensing)
Draft (cps/dpi) 300/120H (Normal) 400/90H (HS) 360/120H 255/240H 300/240H 225/120H 270/120H 191/240H 225/240H
NLQ (cps/dpi) 75/240H
3
GENERAL SPECIFICATIONS
Paper
Cut-sheet (manual feeding) Paper width: 7" to 16.54" / 178 to 420 mm Paper length: 5.5" to 14" / 140 to 356 mm Paper thickness: 0.00276" to 0.00472" / 0.07 to 0.12 mm Paper weight: 14 to 24 lbs. / 52 to 90 g/m2 / 45 to 77 kg Cut-sheet (with optional automatic sheet feeder) Paper size: B5, A4, LT, B4, A3, Legal Paper thickness: 0.00315" to 0.00472" / 0.08 to 0.12 mm Paper weight: 16 to 24 lbs. / 60 to 90 g/m2 / 52 to 77 kg Hopper: 50 sheets of 64 g/m2 30 sheets of 80 g/m2 Stacker: 10 sheets Fanfold (with push tractor feeder) Paper width: 4" to 16.5" / 101.6 to 419 mm Paper thickness: 0.00276" to 0.00433" / 0.07 to 0.11 mm (one-ply) 0.01378" / 0.35 mm maximum (total thickness of multi-ply paper, non-carbon) Paper weight: 14 to 22 lbs. / 52 to 82 g/m2 / 45 to 70 kg (one-ply) 11 to 14 lbs. / 40 to 52 g/m2 / 34 to 45 kg (multi-ply) Copies: Original + 1 or 2 (Normal Mode) Original + 3 or 4 (Multi-Part Mode) * Multi-Part Mode is recommended when using optional pull tractor unit. Fanfold (with optional pull tractor feeder) Paper width: 4" to 16.0" / 101.6 to 406 mm Paper thickness: 0.00276" to 0.00433" / 0.07 to 0.11 mm (one-ply) 0.01378" / 0.35 mm maximum (total thickness of multi-ply paper, non-carbon) Paper weight: 14 to 22 lbs. / 52 to 82 g/m2 / 45 to 70 kg (one-ply) 11 to 14 lbs. / 40 to 52 g/m2 / 34 to 45 kg (multi-ply) Copies: Original + 1 or 2 (Normal Mode) Original + 3 or 4 (Multi-Part Mode) Labels Backing sheet: 4.5" to 16.5" / 114 to 419 mm Thickness Backing sheet: 0.00268" to 0.0035" / 0.07 to 0.09mm Total: 0.0075" / 0.19mm max.
4
GENERAL SPECIFICATIONS
Emulation Interface Ribbon Type Ribbon Life Power Supply Power Consumption LC-1521 LC-1511 Options
Standard Mode: EPSON ESC/P (9-pin) IBM Mode: Proprinter III Standard: Centronics parallel Option: RS-232C/RS-422 serial On-carriage, dedicated Monochrome (Y9WH), Black only 2.5 million characters (Draft 10 cpi) 120V AC +10%/17%, 230V AC +14%/13%; 50/60Hz (depending on country of purchase) 11W during standby / 50W during ASCII draft printing 9W during standby / 30W during ASCII draft printing PT-15HA Pull Tractor Unit SF-15HA Single-Bin Automatic Sheet Feeder IS-8H192 Serial Interface Unit IS-32H768 Serial Interface Unit SPC-8K Serial-To-Parallel Converter
590
mm 23.2 "
35
m 5m " .9 13
Weight : 18.3lbs/8.3kg
Fig. 1-1 External dimensions
5
186mm 7.3"
GENERAL SPECIFICATIONS 2. External Appearance and Composition
Paper guide Front cover
Mute cover
Control panel
Interface connector
Fig. 1-2 Front view of the Printer
Release lever
Power switch
Platen knob
Fig. 1-3 Rear view of the Printer
6
GENERAL SPECIFICATIONS
Fig. 1-4 Front cover removed
Fig. 1-5 Diagram of internal layout
7
GENERAL SPECIFICATIONS 3. Control Panel
3-1. Switch Combination Functions
HS-DRAFT/DRAFT ROMAN SANSERIF COURIER PRESTIGE ORATOR
BANK A1 B2 C3 FONT
SW D4 E5 F6
10 CPI 12 CPI COND PROP PITCH SET/EJECT PARK FORM FEED LINE FEED
POWER
MICRO FEED
ON LINE
EDS
BANK
SWITCH
STATUS
ON/OFF
PRINT
EXIT
Font Selection
Pitch Selection
Set/Eject/Park
Form Feed Back ward
Line Feed Forward
On-Line Micro Feed
Panel Macro Set TOF
Auto Loading Position Change Mode
Buffer Clear & All Reset OFF-LINE
Quiet Mode
Tear off (Long)
Tear off (Short)
Off-Line
ON-LINE
Font Lock
Pitch Lock
Multi-part Mode
Hex Dump Mode
Long Test
Short Test
Font & Pitch Lock EDS Mode Dot-Adjustment Mode Aging Mode Dot-Adjustment Print Mode
EE-PROM Data Initialize
POWER-ON
Bank
Switch
Status
On/Off
Print
Exit EDS MODE
Left
Right
Next
Exit
DOT-ADJUSTMENT MODE
Paper Loading
Back ward
Forward
Cancel
Set Save Factory settings
AUTO LOADING POSITION CHANGE MODE
8
GENERAL SPECIFICATIONS
3-2. EDS Mode Settings
Bank
A
Switch
1 2 3 4 5 6 1 2 3 4 5 6 1, 2
Function
Emulation Character Table (CT) Standard / EPSON mode IBM mode RAM Usage Auto Sheet Feeder Paper Out Multi-Part Mode Graphics Direction Tear-off Line Spacing Auto LF with CR Zero Style Strobe Timing Print Mode Draft ON HS-Draft OFF NLQ ON Print Pitch 10cpi ON ON 12cpi OFF ON 17cpi ON OFF 20cpi OFF OFF Proportional ON ON Quiet Page Length 11"/Letter ON ON ON 8" OFF ON ON 11.7"/A4 ON OFF ON 12" OFF OFF ON 8.5"/Letter ON ON OFF CR Centering Position IBM Code Page (CT=Graphics, IBM #1, #2) #437 ON ON ON ON #850 OFF ON ON ON #860 ON OFF ON ON #861 OFF OFF ON ON #863 ON ON OFF ON #865 OFF ON OFF ON #866 ON OFF OFF ON #3840 OFF OFF OFF ON #3841 ON ON ON OFF #3843 OFF ON ON OFF International Character Set (CT=Italics) U.S.A. ON ON ON ON France OFF ON ON ON Germany ON OFF ON ON England OFF OFF ON ON Denmark-1 ON ON OFF ON Sweden OFF ON OFF ON Italy ON OFF OFF ON Spain-1 OFF OFF OFF ON NLQ Font Selection Roman ON ON ON ON Sanserif OFF ON ON ON Courier ON OFF ON ON Prestige OFF OFF ON ON Orator OFF OFF OFF ON Option Script OCR-B OCR-A Orator-2 TW-Light L-Gothic Blippo H-Gothic Orane ON OFF ON ON OFF ON OFF ON OFF ON ON OFF ON ON OFF OFF ON ON OFF OFF OFF ON ON ON ON OFF OFF ON ON ON OFF OFF OFF OFF OFF OFF
ON
STANDARD / EPSON Graphics IBM #2 Input Buffer Not installed Enabled Disabled Bi-directional Disabled 1/6" Disabled Normal Normal ON ON OFF ON ON ON ON OFF Disabled ON ON ON ON ON Long ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON Cinema Code 39 UPC/EAN Old-Stile Firenze Arabic Naskh Arabic Koufi Arabic Naskh-Eilani ON OFF ON OFF ON OFF ON OFF OFF OFF ON ON OFF OFF ON ON #3844 #3845 #3846 #3847 #3848 #852 #737 #851 #869 #928 Japan Norway Denmark-2 Spain-2 Latin America Korea Ireland Legal ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF 14"/Legal 10.5"/Executive 7.25"/Executive 3.5" 5.5"
OFF
IBM Italics IBM #1 Download Buffer Installed Disabled Enabled Uni-directional Enabled 1/8" Enabled Slashed Reverse
B
C
3,4,5
D
6 1,2,3,4
Enabled OFF ON OFF ON OFF Short OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON OFF OFF ON ON OFF OFF OFF ON ON ON ON ON OFF OFF
E
5 1,2,3,4,5
ON ON OFF OFF OFF OFF ON ON ON ON ON ON ON ON OFF OFF OFF OFF
OFF OFF OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF OFF OFF OFF OFF
ON ON ON ON ON ON OFF OFF OFF OFF ON ON ON ON ON ON ON ON
F
1, 2, 3, 4, 5
OFF OFF ON ON ON ON OFF OFF
OFF OFF ON ON ON ON ON ON
ON ON OFF OFF OFF OFF OFF OFF
9
GENERAL SPECIFICATIONS 4. Parallel Interface
Item Interface Synchronization System I/F Protocol Logic Level
ACK
5µs 5µs
4-1. General Specifications
Specifications Centronics-compatible Via externally supplied STROBE pulse Using ACK and BUSY signals Compatible with TTL level
t
t
t
t
Data
STROBE (EDS B-6 : ON) STROBE (EDS B-6 : OFF) BUSY
t : More than 0.5µs
Fig. 1-6 Timing Charts for Parallel Interface
4-2. Connector Signals
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19~30 31 32 33 34~35 36 Name STROBE DATA0 DATA1 DATA2 DATA3 DATA4 DATA5 DATA6 DATA7 ACK BUSY PAPER SELECT AFXT SIGNAL GND CHASSIS +5V GND RESET ERROR EXT GND SELECT IN Function Goes low for 0.5µs when active. 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.
10µs low to acknowledge receipt of data. Printer sets line low when ready to receive data. High when paper runs out. High when printer is on-line. Printer ignores this signal. Not used. Signal ground Chassis ground (isolated from signal ground) +5V DC output from printer Twisted pair ground return Printer is reset when this signal goes low. Low when printing cannot continue due to error. External ground Not used Printer ignores this signal. 10
GENERAL SPECIFICATIONS 5. Serial Interface (optional)
When using the serial interface, the optional Serial-Parallel Converter must be connected to the printer.
5-1. General Specifications
(SPC-8K) Interface Synchronization Baud rate Word length Start bit Data bits Parity bit Stop bits Signal polarity Mark Space Handshaking Data buffer (IS-8H192) Interface Synchronization Baud rate Word length Start bit Data bits Parity bit Stop bits Signal polarity Mark Space Handshaking Data buffer (IS-32H768) RS-232C Interface Synchronization Baud rate Word length Start bit Data bits Parity bit Stop bits Signal polarity Mark Space Handshaking Data buffer RS-422A Interface Synchronization Baud rate Word length Start bit Data bits Parity bit Stop bits Signal polarity Mark Space Handshaking Data buffer Asynchronous 150, 300, 600, 1200, 2400, 4800, 9600, 19200 BPS (selectable) 1 7 or 8 (selectable) Odd, even, none (selectable) One or more Logical 1 (3V to 15V) Logical 0 (+3V to +15V) DTR, XON/XOFF, ETX/ACK 32 kbytes (standard) Asynchronous 150, 300, 600, 1200, 2400, 4800, 9600, 19200 , 38400, 76800 BPS (selectable) 1 7 or 8 (selectable) Odd, even, none (selectable) One or more Logical 1 (A is 0.2 V or less than B) Logical 0 (A is +0.2 V or more than B) DTR, XON/XOFF, ETX/ACK 32 kbytes (standard) RS-232C-level Asynchronous 150, 300, 600, 1200, 2400, 4800, 9600, 19200 BPS (selectable) 1 7 or 8 (selectable) Odd, even, none (selectable) One or more Logical 1 (-3V to -15V) Logical 0 (+3V to +15V) DTR, XON/XOFF, ETX/ACK 8 kbytes (standard) RS-232C-level only Asynchronous 150, 300, 600, 1200, 2400, 4800, 9600, 19200 BPS (selectable) 1 7 or 8 (selectable) Odd, even, none (selectable) One or more Logical 1 (3V to 15V) Logical 0 (+3V to +15V) DTR, XON/XOFF, ETX/ACK 8 kbytes (standard)
11
GENERAL SPECIFICATIONS
5-2. Connector Signal and Functional Descriptions (SPC-8K, IS-8H192)
Pin No. 1 2 3 4 5 6 7 8~10 11 12~19 20 21~25 Signal name GND TXD RXD RTS CTS NC GND NC RCH NC DTR NC Direction -- OUT IN OUT -- Function Printer chassis ground. This pin carries data from the printer. This pin carries data to the printer. Always space. This signal is space when the computer is ready to send data. The printer does not check this pin. Unused. Signal ground. Unused. The printer sets this signal to space when it is ready to receive data. This line carries the same signal as pin 20. Unused. The printer sets this signal to space when it is ready to receive data. Unused.
--
OUT
OUT
5-3. DIP Switch Settings (SPC-8K, IS-8H192)
Switch 1 2 3 4 5 6 7 8 ON 8 data bits No parity OFF 7 data bits Parity checked
Handshaking protocols see table below Odd parity Even parity
Data transfer rate see table below
All switches are set to ON before the printer leaves the factory. Protocol DTR mode XON/XOFF mode ETX/ACK mode Switch 3 ON ON OFF Switch 4 ON OFF ON
Baud rate 150 300 600 1200 2400 4800 9600 19200
Switch 6 OFF OFF OFF OFF ON ON ON ON 12
Switch 7 OFF OFF ON ON OFF OFF ON ON
Switch 8 OFF ON OFF ON OFF ON OFF ON
GENERAL SPECIFICATIONS 6. EE-PROM mode
6-1. Outline
These settings can be changed in the EE-PROM mode by writing data directly to the EE-PROM on the main logic board: Setting EE-PROM mode · Send (09)H command. Canceling EE-PROM mode · Initialize the printer by sending @
6-2. Explanation of special control codes
@ M@ Exits printer from EE-PROM mode and initializes the printer. Returns all data in the EE-PROM to the factory settings. After the buffer is cleared, the buzzer sounds. If the printer is powered off before the buzzer sounds, all data in the buffer is not cleared. If all data is not cleared from the buffer, operation is not guaranteed. Be sure to allow the buzzer to sound before you turn the printer off!
MWn Code MW0 MW1nm MW2 Function Stores data into entire area of EE-PROM. Stores data (m) into the address (n) Stores auto-start software data into EE-PROM. Address Capacity 00H-7FH 128bytes nH 1 byte 40H-5EH 30bytes 5FH-7DH 30bytes
· The data (m) used in the commands above are stored in the specified address in order (n). · When the data to be stored exceeds the specified capacity, subsequent data are ignored. · Data are stored in the EE-PROM according to the memory map. (See section 3. EDS mode setting and 6-3. EE-PROM Map.) · After all data are stored, a beep indicates the completion of storage. · If the printer is powered off during data storage, data stored before power off are valid, but subsequent operation of the printer is not guaranteed. Do not power off the printer while data is being stored! MR Dumps all data in the EE-PROM to a hard copy. For an example of using these control codes, see section 6-4. For the corresponding EE-PROM addresses, see the EE-PROM memory map in section 3-2. EDS mode setting and 6-3 EE-PROM Map.
13
GENERAL SPECIFICATIONS
6-3. EE-PROM MAP
Address 00H EDS setting Bit Function b0 Emulation Character Table b1 Standard / EPSON mode IBM mode b2 RAM Usage b3 Auto Sheet Feeder b4 Paper out Detector b5 Multi-Part Mode 01H EDS setting Bit b0 b1 b2 b3 b4 b5 02H Function Graphics Direction Tear-off Line Spacing Auto LF with CR Zero Style Strobe Timing 1 Bi-directional Disabled 1/6" Disabled Normal Normal 0 Uni-directional Enabled 1/8" Enabled Slashed Reverse FFH b1 1 1 0 Print Pitch Function b2 10cpi 1 12cpi 0 17cpi 1 20cpi 0 Proportional 1 1 Disabled b3 1 1 0 0 1 b4 1 1 1 1 0 1
STANDARD/EPSON IBM
Function
Factory data FFH 0
Graphics IBM #2 Input Buffer Not installed Enabled Disabled
Italics IBM #1 Download Buffer Installed Disabled Enabled FFH
EDS setting Print Mode Function b0 Draft 1 HS-Draft 0 NLQ 1
Bit Function b5 Quiet 03H EDS setting
0 Enabled FFH
Page Length Function 11"/Letter 8" 11.7"/A4 12" 8.5"/Letter b0 1 0 1 0 1 b1 1 1 0 0 1 b2 1 1 1 1 0 b3 1 1 1 1 1 Function 14"/Legal 10.5"/Executive 7.25"/Executive 3.5" 5.5" 1 Long Short b0 0 1 0 1 0 b1 1 0 0 1 1 0 b2 0 0 0 1 1 b3 1 1 1 0 0
Bit Function b4 CR Centering Position
14
GENERAL SPECIFICATIONS
Address 04H
Function EDS setting IBM Code Page (Character Table=Graphics, IBM#1, #2) Function b0 b1 b2 b3 b4 Function #437 1 1 1 1 1 #3844 #850 0 1 1 1 1 #3845 #860 1 0 1 1 1 #3846 #861 0 0 1 1 1 #3847 #863 1 1 0 1 1 #3848 #865 0 1 0 1 1 #852 #866 1 0 0 1 1 #737 #3840 0 0 0 1 1 #851 #3841 1 1 1 0 1 #869 #3843 0 1 1 0 1 #928 International Character Set (Character Table=Italics) Function U.S.A. France Germany England Denmark-1 Sweden Italy Spain-1 b0 1 0 1 0 1 0 1 0 b1 1 1 0 0 1 1 0 0 b2 1 1 1 1 0 0 0 0 b3 1 1 1 1 1 1 1 1 b4 1 1 1 1 1 1 1 1 Function Japan Norway Denmark-2 Spain-2 Latin America Korea Ireland Legal b0 b1 b2 1 0 1 0 0 1 1 1 0 0 1 0 1 0 0 0 0 0 1 1 1 0 1 1 1 0 1 0 0 1 b0 b1 b2 1 1 1 0 1 1 1 0 1 0 0 1 1 1 0 0 1 0 1 0 0 0 0 0 b3 b4 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 b3 b4 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
Factory data FFH
05H
EDS setting NLQ Font Selection Function Roman Sanserif Courier Prestige Orator b0 1 0 1 0 0 b1 1 1 0 0 0 b2 1 1 1 1 0 b3 1 1 1 1 1 b4 1 1 1 1 1
FDH Option Function Script OCR-B OCR-A Orator-2 TW-Light L-Gothic Blippo H-Gothic Orane Cinema Code 39 UPC/EAN Old-Style Firenze Arabic Naskn Arabic koufi Arabic Naskn-Eilani b0 b1 b2 1 1 0 0 1 0 1 0 0 1 1 1 0 1 1 1 0 1 0 0 1 1 1 0 0 1 0 1 0 0 0 0 0 1 1 1 0 1 1 1 0 1 0 0 1 1 1 0 0 1 0 b3 b4 1 1 1 1 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 00H 80H 80H 80H 80H
06H 07H 08H 09H 0AH
(Not used) Misalignment correction Misalignment correction Misalignment correction Misalignment correction 15
090 DPI (H) 120 DPI (H) 120 DPI (H) Graphics 144 DPI (H)
GENERAL SPECIFICATIONS
Address 0BH 0CH 0DH 0EH 0FH 10H 11H 12H 13H 14H 15H 16H 17H 18H 19H 1AH 1BH 1CH 1DH 1EH~2AH 2BH, 2CH 2DH, 2EH 2FH, 30H 31H 32H~35H 36H~39H 3AH, 3BH 3CH, 3DH 3EH, 3FH 40H~5EH 5FH~7DH 7EH 7FH
Function Misalignment correction Misalignment correction Misalignment correction Misalignment correction Misalignment correction Misalignment correction Misalignment correction (Not used) Misalignment correction Multi-part Mode Misalignment correction Multi-part Mode Misalignment correction Multi-part Mode Misalignment correction Multi-part Mode Misalignment correction Multi-part Mode Misalignment correction Multi-part Mode Misalignment correction Multi-part Mode Misalignment correction Multi-part Made Misalignment correction Multi-part Made Misalignment correction Multi-part Made Misalignment correction Multi-part Made (Not used) Top Margin in Auto-loading Friction Top Margin in Auto-loading Tractor Top Margin in Auto-loading ASF Paper End Sensor A/D Valve Macro set for Standard/EPSON Mode Macro set for IBM Mode TEAR OFF (Short) TEAR OFF (Long) IBM Initial Condition Area Auto Start Area for Standard/EPSON Mode Auto Start Area for IBM Mode Control Code (00H = Space / 0FH = Null) EE-PROM Check Code 240 DPI (H) 240 DPI (H) Graphics 060 DPI (F) 072 DPI (F) 080 DPI (F) 090 DPI (F) 120 DPI (F) 090 DPI (H) 120 DPI (H) 120 DPI (H) Graphics 144 DPI (H) 240 DPI (H) 240 DPI (H) Graphics 060 DPI (F) 072 DPI (F) 080 DPI (F) 090 DPI (F) 120 DPI (F)
Factory data 80H 80H 80H 80H 80H 80H 80H 00H 80H 80H 80H 80H 80H 80H 80H 80H 80H 80H 80H 00H 48H 00H 48H 00H 48H 00H 99H 00H 00H 00H 00H 00H 80H 00H 80H FFH FFH 00H 00H 00H 00H 00H 01H
16
GENERAL SPECIFICATIONS
6-4. Rewriting the EE-PROM
Follow this procedure to rewrite the EE-PROM. (1) (2) (3) (4) (5) Turn the printer on. Turn the computer on. Load a BASIC disk in the computer. Set a sheet of paper in the printer, and press the SET switch. Enter the program listed below and run the program. 10 LPRINT CHR$(27);CHR$(26);CHR$(&H09) 20 LPRINT CHR$(27);"MW1";CHR$(&H01);CHR$(&HFB) 30 LPRINT CHR$(27);"MR" BASIC Program Code What It Does 10 LPRINT CHR$(27);CHR$(26);CHR$(&H09) Enters the EE-PROM mode. 20 LPRINT CHR$(27);"MW1"; Starts rewriting the EE-PROM. CHR$(&H01); Address data from &H01 will show EDS mode from the EE-PROM memory map. CHR$(&HFB) Data from &HFB will change the Line spacing from 1/6" to 1/8". 30 LPRINT CHR$(27);"MR" Dumps all EE-PROM data to hexadecimal. (6) To complete the setting, turn the printer off.
17
CHAPTER 2 THEORY OF OPERATION
1. 2. 3. 4. Block Diagram ..................................................................................................... 21 General Flow Chart (Main Logic Board) ............................................................22 Power Supply Circuit .......................................................................................... 23 Mechanism ........................................................................................................... 24
4-1. 4-2. 4-3. 4-4. 4-5. Print Head Mechanism ......................................................................................... 24 Print Head Carrying Mechanism ......................................................................... 25 Ink ribbon feed mechanism ................................................................................. 26 Paper Feed Mechanism ........................................................................................ 27 Detectors ............................................................................................................... 28
2
THEORY OF OPERATION 1. Block Diagram
The block diagram of this printer is shown in Fig. 2-1.
Data (From Host Computer) Print head Parallel interface LED Switch Control panel board
Masked ROM 2M
Driver
Carriage motor
Gate array
CPU Driver RAM
Detectors Paper feed motor
UVE-PROM 1M Power supply unit
EE-PROM
AC Power
Main logic board
Printer mechanism
Fig. 2-1 Block Diagram (1) Main Logic Board This board receives data from the host computer and stores it in the RAM in the order it arrives. The CPU on this board reads the data from the RAM, and edits it according to the program stored in the ROM. When editing is completed, various drive signals from the CPU are sent to the printer mechanism to perform printing. Explanation · CPU TMP90C041 Controls this printer. · UVE-PROM 1M bit Contains the program which executes control of the printer. UVE-PROM is not provided with some versions of the software. · Masked ROM 2M bit Contains the character font. · EE-PROM KM93C46 64 × 16 bits Contains the data (EDS data and so on) in the memory switch. · RAM 512K bit Used as a stack area, work area and data buffer of the CPU. · Parallel interface · Gate array (custom IC) Inputs/outputs several signals. · Driver The data edited by the CPU and gate array are sent to the printer mechanism after conversion to the signal for the print head drive and motor drives. Control panel board Panel circuit for manual control of the printer. Printer Mechanism Consists of a print head, carriage motor, paper feed motor, and detectors. Power Supply Unit Converts AC power to LC-1511:33VDC , LC-1521:35VDC and 5VDC. 21
(2) (3) (4)
THEORY OF OPERATION 2. General Flow Chart (Main Logic Board)
The flow chart below shows you the general flow of editing and printing operations.
POWER ON
Initialization
Ready state
Read data
Control code? YES Control code processing
No
Data storage
NO
Print? YES Data processing or printing
(Line buffer determination)
(Print out of data)
NO
Return? YES Return action
Fig. 2-2 General Flow Chart of Editing and Printing 22
THEORY OF OPERATION 3. Power Supply Circuit
A ringing choke converter type circuit is used with a dropper type circuit in the power supply unit, fulfilling the input and output conditions described in the chart below. Voltage Range 110,120VAC 220Vto 240VAC 5 VDC ±5% Max. Current Output Service 1.0 A 0.6 A 0.4 A For logic circuit drive, for motor holding. For print head 1.25A(LC-1511) drive, for motor 3.4A (LC-1521) drive. Circuit Type
Input
Dropper
Output
33 VDC ±5%(LC-1511) 35 VDC ±5%(LC-1521)
Ringing choke converter.
Input 110VAC 120VAC 220VAC 230VAC 240VAC
Noise filter circuit
In rush current protection circuit
Rectifier circuit
Switching section (Transistor Q1)
Ringing choke converter
Out put 33V DC ; LC-1511 35V DC ; LC-1521 Out put 5V DC
Dropper circuit Transformer T1 PC1 Control circuit Photo-Coupler Voltage reference
Fig. 2-3 Power Supply unit block diagram
23
THEORY OF OPERATION
4.
Mechanism
4-1. Print Head Mechanism
The print head consists of 9 needle wires and 9 print solenoids. The following explains how each needle wire operates during printing. (1) When the print solenoid is energized, the clapper is attracted by the iron core and the needle wire is driven toward the platen. (2) This needle wire hits the platen via the ink ribbon and paper. A single dot is printed on the paper. (3) When the print solenoid is de-energized, the needle wire is returned to its original position by rebound energy and spring and clapper holder (leaf spring) force.
Paper Paper guide Ink ribbon Needle wire Platen
Spring Stopper
Guide
Subguide
Clapper holder
Iron core
Print solenoid Clapper
Fig. 2-4 Outline of Print Head Mechanism
24
THEORY OF OPERATION
4-2. Print Head Carrying Mechanism
The print head carrying mechanism consists of a carriage, timing belt, carriage motor, and home position detector. Carriage The carriage is supported horizontally by the carriage stay and rear angle. The carriage moves from side to side with the print head mounted above it. A timing belt is clamped to the base of the carriage and a shield plate is mounted at the base for home position detection. Timing Belt The timing belt is suspended between the timing pulley of the carriage motor and the timing pulley of the tension lever. The timing belt maintains a constant tension. The timing belt is also clamped to the base of the carriage so that it can move the carriage accurately with driving force from the carriage motor. Carriage Motor The carriage motor is a PM (permanent magnet) 4-phase, 48-pole pulse motor driven by pulse signals from the control circuit. The rotational rate depends on the number of pulses per unit time. By varying this rotational rate (carriage carrying rate), the size of the horizontal letters can be changed in each print mode.
Fig. 2-5 Print Head Carrying Mechanism
25
THEORY OF OPERATION
4-3. Ink ribbon feed mechanism
The ink ribbon feed mechanism is linked to the print head carrying mechanism so the ink ribbon always winds automatically in the same direction while the carriage moves left and right. The movement of the carriage along the serrated edge of the rear angle of the printer mechanism drives the idler gear. The rotation of the idler gear is conveyed sequentially to the gears that work and wind the ribbon. The carriage has a clutch lever that keeps the direction of the cassette gear rotation constant, regardless of the direction of the idler gear rotation as the carriage moves left and right.
Fig. 2-6 Ribbon feed mechanism
26
THEORY OF OPERATION
4-4. Paper Feed Mechanism
The paper feed mechanism consists of a paper feed motor, an idler gear, a platen and a traction unit. The paper feed motor is a PM (Permanent Magnet) 4-phase and 48 pulse motor. There are two ways of feeding paper into the printer: the friction method and the tractor method. You can select the method you want to use by setting the release lever on the push tractor unit.
Position of release lever Linkage between tractor gear and PF idler gear Platen roller and Pinch roller Release lever position detector Paper feeding method (1)
[1] Not linked Pressed OFF Friction
[2] Linked Not ON Tractor
(2)
Friction Method Friction method is selected when the release lever is position [1]. With this method, paper is pressed between the Platen roller and the Pinch roller therefore, paper is fed as the rollers turn. As the paper feed motor is driven, the motor gear, through the idler gear, turns the platen gear in the paper feeding direction. However, since the tractor gear and the PF idler gear are not linked at this time, the tractor unit will not be driven. Tractor Method Tractor method is selected when the release lever is position [2]. Paper feeding is facilitated by rotation of the sprocket pin of the tractor unit. When the tractor method is selected, the tractor gear is linked to the PF idler gear, enabling the drive force generated by the paper feed motor to be transferred to the tractor unit via the idler gear.
Fig. 2-7 Paper Feed Mechanism
27
THEORY OF OPERATION
4-5. Detectors
(1) Print head temperature detectors The A/D converter in the CPU detects the print head temperature at power on and before each line begins to print.
+5V +5V
Thermistor VREF L1 R1 AN1 R2 CPU L2
Fig. 2-8 Printer head temperature detector circuit Control Method (by Text printing) Print Normal print Unidirectional print Print Stop (2) (LC-1511) ~ 120 120 ~ 130 Over 130 Temperature °C (LC-1521) ~ 110 110 ~ 130 Over 130
Home Position Detector A photo-interrupter is used in the home detector on the printer. ON/OFF signals are generated according to the position of the carriage. (Shield plate mounted at the base of the carriage.) The printing position is determined by these signals.
+5V R2
Detecting signal
R1 C1
+5V R3
Fig. 2-9 Carriage home position detector circuit
Output (V) 5 0
Decision in home position (with shield plate) not in home position (without shield plate)
28
THEORY OF OPERATION
(3) Paper end Detector The paper end Detector is located in the paper chute unit. The A/D converter in the CPU detects the presence or absence of paper.
VRef
+5V R1
+5V R2 AN C1 R3
Paper
CPU
Fig. 2-10 Paper end detector circuit
(4)
Release lever switch
+5V
R2 R1 Detecting signal Leaf switch
Fig. 2-11 Release lever switch circuit Control Method Output Release (V) Lever SW 0 5 Tractor Friction
29
CHAPTER 3 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. 2. 3. 4.
Adjustment of Gap Between Print Head and Platen ........................................ 33 Adjustment of Timing Belt Tension ................................................................... 34 Dot Adjustment.................................................................................................... 35 Adjustment of Paper end detector..................................................................... 36
3
ADJUSTMENTS 1.
(1) (2) (3)
Adjustment of Gap Between Print Head and Platen
Remove the Printer cover and ribbon holder [1]. Loosen nut [3] using jig [2]. Adjust the head gap at the specified left and right positions (two places). * Adjust by moving jig [5] forward or backward. * Use bushing [4] to adjust the gap on the left side until it equals that on the right side. Gap adjustment values: LC-1511 0.34 to 0.40mm LC-1521 0.30 to 0.35mm Be sure to adjust with the rear cover installed. (Adjustment with rear cover off will increase the gap by about 0.1mm.) (4) Hold jig [5] in place and push jig [2] toward the rear so as to tighten nut [3]. (5) Confirm that the setting is correct.
Fig. 3-1 Mechanism
gauge [8] 55mm Platen [6] 55mm Platen [6]
L
R
Head gap Carriage [7] LC-1511 ... 0.34~0.40mm LC-1521 ... 0.30~0.35mm
Fig. 3-2 Positioning the carriage unit
Fig. 3-3 Gap measurement
33
ADJUSTMENTS 2.
(1) (2) (3) (4) (5) (6) (7) (8)
Adjustment of Timing Belt Tension
Remove the upper case unit according to the procedures described in chapter 4. Loosen screw [1]. Move the carriage [2] once from left to right, then return it to the left. Set the tension gauge [3] to the position indicated in Fig. 3-5 below. Using a regular screwdriver, move tension lever [4] to the right until it matches the minimum tension setting (23.0 if LC-1511; 28.0 if LC-1521). Tighten screw [1]. Confirm that the setting is correct. Remove tension gauge [3]. Move the carriage [2] all the way to the right and then back to the left, and check the setting once again.
Fig. 3-4 Gap measurement
Platen
Gauge lever position Timing belt 0~10mm
Fig. 3-5 Positioning the carriage unit
Fig. 3-6 Measuring tension
34
ADJUSTMENTS 3. Dot Adjustment
Dot adjustment can be carried out from either the panel or the SETUP application. (1) Correction values
72H 14 13 12 11 10 9 8 7 6 5 4 3 2 7FH 80H 81H 1 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 8EH +10 +11 +12 +13 +14
14/720 (inch)
14/720 (inch)
(2)
Correction Mode HS-DRAFT DRAFT Double-Density / Speed Double-Desity Plotter GFraphics NLQ Quadruple-Density Normal Density Plotter-Graphics CRT Graphics-I CRT Graphics-II Double-Density 90DPI (H) 120DPI (H) Text 120DPI (H) Graphics 144DPI (H) 240DPI (H) Text 240DPI (H) Graphics 60DPI (F) 72DPI (F) 80DPI (F) 90DPI (F) 120DPI (F)
(3)
Adjustment from the panel
[1] [3] [4] [5]
BANK A1 B2 C3 FONT [10]
SW
D4 E5 F6
[2] POWER [6] [7] [8] PITCH [11] SET/EJECT PARK [12] STATUS FORM FEED [13] ON/OFF LINE FEED [14] PRINT MICRO FEED [9] ON LINE [15] EXIT
EDS
BANK
SWITCH
s
Selecting "DOT ADJUSTMENT" mode. Switch on the power while holding down both the FORM FEED SW [13] and the ON-LINE SW [15]. Setting the value and exiting the mode. FONT SW [10]: Adjust toward left (negative adjustment). PITCH SW [11]: Adjust toward right (positive adjustment). S/E/P SW [12]: Advance to next adjustment mode. ON-LINE SW [15]: Terminate DOT ADJUSTMENT mode. Pressing this switch terminates the mode and registers the new setting. If you terminate the mode without using this switch, the new setting will be lost. 35
s
ADJUSTMENTS 4. Adjustment of Paper end detector
After replacing the paper-end detector, adjust the new detector as described here. First enter the dedicated command, then flow chart below. Dedicated command: (50)H n Automatic Sheet Feeder ; n=01 Tractor and Friction ; n=01
Send LPRIN CHR$(27);CHR$(26);
CHR$(&H50);CHR$(01) command
n = 01 ? Yes
No
Tractor or Friction ? Tractor Tractor
Friction
Tractor or Friction ? Friction
Paper eject
Paper Park
Paper eject
Paper out? Yes
No E Paper out? Yes
No E
Paper out? Yes
No E
Enter paper-out value (A)
Enter paper-out value (A)
Enter paper-out value (A)
Loading cut-sheet paper
Loading fanfold paper
No
Press paper feed switch Yes
Paper in? Yes
No
No E Paper in? Yes B
E
Loading cut-sheet paper
A
C
36
ADJUSTMENTS
A
B
C
No Paper in? E
Yes
Enter paper-in value (B)
Find average (center value) of (A) and (B)
Nomal range?
No
YES
Print the new Paper end detector A/D value
** PAPER END SENSOR : **
E
Adjustment error / New value not recorded (3beeps)
Register the new Paper end detector A/D value (1 beep)
Fanfold paper: From feed Cut-sheet paper: Eject paper
37
CHAPTER 4 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. Assy 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 5.
1. 2. 3. 4. 5. 6. 7. 8. 9.
Push Tractor Unit ................................................................................................41 Upper Case Unit .................................................................................................. 41 Printer Machanism ..............................................................................................42 Main Logic Board Unit ........................................................................................ 42 Power Supply Unit ...............................................................................................43 Fuse ...................................................................................................................... 43 Print Head ............................................................................................................ 44 Carriage Motor Unit ............................................................................................. 45 Platen Unit............................................................................................................ 45
4
10. Detector Unit ........................................................................................................46
PARTS REPLACEMENT 1. Push Tractor Unit
(1) (2) (3) Turn OFF the power switch. Remove the power cord from the AC output socket. Remove · Printer cover · Rear cover unit [1] · Push tractor unit [2] Set the release lever [3] to FRICTION. Lift the hook [4] at each side of the push tractor.
2.
Upper Case Unit
(1) Remove · Push tractor unit as described above1. · Platen knob unit [1] · Four screws [2] Move the carriage unit to the right. Remove · Upper case unit [3] Pull the upper case unit [3] forward and remove it from the hooks [4]. · Control board [5] Detach the two hooks.
(2) (3)
Caution regarding assembly; · When carrying out reassembly, pay due attention to the upper case unit's internal sheet and the mechanism's detector.
41
PARTS REPLACEMENT 3. Printer Machanism
(1) (2) (3) Remove · Upper case unit as described above 2. Move the carriage unit to the left. Remove · Cable holder [1] · Two head cable [2] · Six screws [3] · Two screws [4] · Printer mechanism [5] Remove the connectors from the main logic board.
Caution regarding assembly; · Cross CN5 over when connecting.
Cross over CN6 CN5
· Attach the head cable [2] as illustrated at right.
Slide into position.
4.
Main Logic Board Unit
(1) Remove · Printer mechanism as described above 3 · Connector [1] · Four screws [2] · Home position board [3] · Main logic board unit [4]
Caution regarding assembly; · Be sure that the height and angle of the main-logicboard transistors (TR14, 15, 16) and the controlboard LEDs are within the limits indicated below.
(LED angle) < ±10° = (Height for TR14,15,16) 12.5mm max. Main logic board
1.3mm max. Control board
· Be sure that the ground spring at the rear of the main logic board has a height of at least 7.3mm.
42
Ground spring
7.3
mm
PARTS REPLACEMENT 5. Power Supply Unit
(1) Remove · Upper case unit as described above 2. · Three screws [1] · Screw [2] · Power supply unit [3]
6.
Fuse
(1) (2) Remove · Upper case unit as described above 2. Inspect · Fuse F1 Defective Replace fuse as follows: LC-1511 AC voltage 110/120V 220V to 240V LC-1521 AC voltage 110/120V 220V to 240V Fose Type 5TT2A-250V 215-1A-250V Fose Type 5TT5A-125V 215-2.5A-250V
43
PARTS REPLACEMENT 7. Print Head
(1) Remove · Top guide unit [1] · Colour ribbon holder assy [2] · Cable holder [3] · Ribbon holder [4] · Two screws [5] · Print head [6]
WARNING The print head gets hot after printing. Do not touch it until it cools.
(2)
Adjust · Gap between print head and platen. Refer to section 1 of Chapter 3.
Note: Fold the head cables according to the dimensions shown below.
° 0.5
Connector face 9 1
82 1
Size : mm
90 °
44
PARTS REPLACEMENT 8. Carriage Motor Unit
(1) (2) (3) Remove · Printer mechanism as descrbed above 3. Loosen the screw [1]. Remove · Two screws [2] · Carriage motor unit [3] Adjust For details about belt-tension adjustment, refer to section 2 of Chapter 3.
(4)
9.
Platen Unit
(1) Remove · Upper case unit as described above 2. · Top guide unit [1] · Stack guide unit [2] The stack guide unit may break if it is forcibly removed. Therefore, hold the gears tightly when removing the stack guide unit. · Idler gear [3] · PF idler gear [4] · Spring [5] · Stop ring [6] · Platen unit [7] Move the platen holder as shown in the diagram below and remove the platen unit.
Platen Holder
Fig.a Fig.b
45
PARTS REPLACEMENT 10. Detector Unit
(1) (2) (3) Remove · Platen unit as described above 9. Turn over the printer mechanism. Remove · Paper chute unit [1] Remove the nine paper sheet hooks [3] on the bottom of the frame base assembly [2] and remove the Paper chute unit [1]. · Detector unit [4]
46
CHAPTER 5 MAINTENANCE AND LUBRICATION
1.
Maintenance .........................................................................................................49
1-1. 1-2. Cleaning ................................................................................................................ 49 Checks ................................................................................................................... 49
2.
Lubrication ........................................................................................................... 50
2-1. 2-2. 2-3. Lubricant ............................................................................................................... 50 Lubricating Method .............................................................................................. 50 Lubricated Areas .................................................................................................. 50
5
MAINTENANCE AND LUBRICATION 1. Maintenance
In order to maintain the optimum performance of this printer and to prevent trouble, maintenance must be carried out according to the following items.
1-1. Cleaning
(1) Removal of dirt Wipe off dirt with a soft cloth soaked in alcohol or benzine. Note: Do not use thinner, trichlene or ketone solvents because they may damage plastic parts. Also during cleaning, be careful not to moisten or damage electronic parts, wiring, or mechanical parts. Removal of dust, pile, etc. Vacuum cleaning (with an electric cleaner) is preferred. Remove all dust, etc., inside the printer. Note: After cleaning, check the oil level. If it is not adequate due to cleaning, replenish it.
(2)
1-2. Checks
Checks must be carried out at two levels: a "daily check" which the operator can easily carry out during operation, and a "periodic check" which an expert should carry out. (1) Daily check When the printer is used on a daily basis, check that the printer is used properly. Make sure that the printer is operating under the best conditions. · Is any paper stuck in the paper box or printer case? · Is the cartridge ribbon set at the right position? · Is there any foreign matter inside the printer? (Remove if any.) · Is the print head getting excessively dirty? (2) Periodic check After 6 months or printing 1 million lines, the periodic check and lubrication must be carried out. · Check for deformation of springs. · Check the gap between the platen and the print head. · Remove dust, dirt, etc., around the detectors.
49
MAINTENANCE AND LUBRICATION 2. Lubrication
Lubrication is very important to maintain optimum performance and to prevent trouble.
2-1. Lubricant
The type of lubricant greatly affects the performance and durability of the printer, especially in a low temperature environment. We recommend use of the grease and lubrication oils listed below for this printer Type of oil Grease Lubricant Silicone oil Product name MOLYKOTE EM-30L Mobil 1 KF96-1000CS Mobil oil Shin Etsu Chemicals Industry Co, LTD Maker DOW CORNING ASIA LTD
2-2. Lubricating Method
When lubrication is carried out in assembly and disassembly, wash parts well to remove dust and dirt before lubrication. Lubrication must be carried out regularly once every 6 months or after 1 million lines have been printed. Lubrication is necessary irrespective of the regular lubrication whenever lubricant becomes deficient after cleaning or whenever parts have been disassembled or replaced.
2-3. Lubricated Areas
NO. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] LubricationProduct Rubbing surfaces of Felt Rubbing surfaces of Frame R and Adjusting lever Rubbing surfaces of Platen and Platen spping Rubbing surfaces of Frame R, L and Stack guide Rubbing surfaces of Carriage unit and Color ribbon holder Rubbing surfaces of Carrige stay Rubbing surfaces of Pully shaft and Pully Rubbing surfaces of Frame R and RF idler gear Rubbing surfaces of Tractor shaft Rubbing surfaces of Release lever and Tractor frame L Rubbing surfaces of Roller shaft Rubbing surfaces of Shaft Rubbing surfaces of Ribbon shaft lever Rubbing surfaces of Gear Rubbing surfaces of Shift cam Rubbing surfaces of back of Gear cover Rubbing surfaces of PF idler gear and shaft of Tractor Fram R Rubbing surfaces of Tactor shaft Rubbing surfaces of Feed roller shaft and Fram L, R Name Mobil 1 EM-30L EM-30L EM-30L EM-30L Mobil 1 EM-30L EM-30L EM-30L EM-30L EM-30L EM-30L KF96-1000CS EM-30L EM-30L EM-30L EM-30L EM-30L EM-30L
50
MAINTENANCE AND LUBRICATION
Fig. 5-1 Lubricated Areas (printer mechanism) 51
MAINTENANCE AND LUBRICATION
Fig. 5-2 Lubricated Areas (Frame R unit)
Fig. 5-3 Lubricated Areas (push tractor unit)
52
MAINTENANCE AND LUBRICATION
(LC-1511)
(LC-1521)
(Shift cum)
(Back side of gear cover)
Fig. 5-4 Lubricated Areas (Carriage unit) 53
MAINTENANCE AND LUBRICATION
Fig. 5-5 Lubricated Areas (Pull tractor unit)
Fig. 5-6 Lubricated Areas (ASF) 54
CHAPTER 6 TROUBLESHOOTING
1. 2. 3. 4.
Troubleshooting Procedures .............................................................................57 Unit Replacement Priority Chart ........................................................................ 58 Repair by Unit Replacement............................................................................... 59 Repair by Parts Replacement .............................................................................65
4-1. 4-2. 4-3. 4-4. 4-5. Does not Operate at All with Power on............................................................... 65 Power Supply Circuit Abnormal .......................................................................... 66 Defective Motor Operation ................................................................................... 67 Defective Print Head Operation ........................................................................... 68 Defective Interface Operation .............................................................................. 69
6
TROUBLESHOOTING 1. Troubleshooting Procedures
Troubleshooting is never easy because various problems arise depending upon the particular location of the breakdown. The following procedures should be taken in making repairs. (1) The first method is to make repairs through unit replacements. The two display codes appearing in the flow chart are defined as follows: 1) indicates main logic board replacement; and 2) indicates printer mechanism replacement, to be carried out if the problem has not been corrected. 1) 2) Main Logic Board Replacement Printer Mechanism Replacement
Check again at this time whether the replaced unit is malfunctioning. (This is done to rule out trouble caused by improper contact of connectors.) Replaceable units consist of the following: · Power supply unit · Main logic board · Printer mechanism · Control panel board In replacing these units, always refer to the unit replacement priority chart. (2) The second method is to make repairs by parts replacement to replace defective elements inside a particular unit. (Note 1) Before starting to repair, be sure to check visually the contact of the connector and the mounting of the IC in the IC socket. (Note 2) Always turn off power source and remove power plug before replacing any units or parts. (Note 3) All check items shown in the flow chart must be checked. Otherwise, newly mounted parts or units may become damaged. (Note 4) If, in the process of making repairs, there is any confusion about proper procedures, restart the job from the beginning. (Note 5) Be careful to avoid injury from static electricity when handling ICs and main logic board.
57
TROUBLESHOOTING 2. Unit Replacement Priority Chart
Problem Details Specific display lamp only will not glow Specific switch only cannot be input Buzzer does not sound (sound volume inadequate) Strange sounds during operation No motor holding power (power very weak) Dots skipped Print is too light Ink ribbon entanglement (wire sticks out) Absence of paper not detected Lever position not detected Incorrect printing Ink ribbon not forwarded No operation at EDS setting Faulty operation when power is turned on/off Abnormal motor operating speed (slow) Fuse blown during operation Error detection of head temperature Carriage motor error Paper handling error EE-PROM & RAM error Watch dog timer error Unit Exchange Sequence Power supply unit Main logic board 2 2 Printer mechanism Control panel board 1 1 Remarks
Category
Operation related
1 1 2 1 2 2 2 2 1 1
2 2
Motor related
Print head related
1 1 1 1 2
Replace ink ribbon
Detector related
Check I/F cable 1
Interface related and others
1 1 1 3 1 2 2 2 1 1 2 2 1 1 1 "DRAFT" lamp blink "ROMAN" lamp blink "COURIER" lamp blink "10CPI" lamp blink "PROP" lamp blink
Note: The figures 1, 2 and 3 mean the priority of replacement.
Error indication
58
TROUBLESHOOTING 3. Repair by Unit Replacement
START A * Turn power off. * Remove I/F cable. * Mount ink ribbon. * Set paper. * Move carriage to center. Turn power on.
Carriage Moves? YES
NO
B
Carriage operates normally? YES
NO *1 See (8) and (9) waveform in item 7 of Chapter 7. Carriage motor operating waveform is normal? *1 YES NO
Replace printer mechanism.
1) Replace main logic board. 2) Replace printer mechanism.
A Carriage stops at home position? (left side) YES NO
Home position switch signal is normal? YES
NO
Replace main logic board.
1) Replace main logic board. 2) Replace printer mechanism.
1
A
59
TROUBLESHOOTING
1 NO On line lamp light? YES On line lamp signal is normal? Press on line switch to take off line. YES Replace control panel board. NO
Replace main logic board.
NO On line lamp is out?
A
YES Press paper feed switch. E
Paper feed switch operation is normal? YES
NO
*2 See (10),(11) and (12),(13)waveform in item 7 of Chapter 7. Paper feed motor drive waveform is normal? *2 YES Replace printer mechanism. NO
Turn power off.
1) Replace main logic board. 2) Replace printer mechanism.
Holding paper feed switch, turn power on.
Self printing:
A
Carriage operates normally? YES NO *1 See (8) and (9) waveform in item7 of Chapter 7. Carriage motor drive waveform is normal? *1 YES Replace printer mechanism. 2 NO
1) Replace main logic board. 2) Replace printer mechanism.
A
60
TROUBLESHOOTING
2
Printing operation is normal? YES
NO *3 See (4),(5) and (6),(7) waveform in item 7 of Chapter 7. Print head drive signal waveform is normal? *3 YES Replace printer mechanism. NO
1) Replace main logic board. 2) Replace printer mechanism.
A
Paper feed operation is normal? YES NO
*2 See (10),(11) and (12),(13) waveform in item 7 of Chapter 7. Paper feed NO motor drive waveform is normal? *2 NO
Ribbon feed operation is normal? YES
NO
YES
1) Replace main logic board. 2) Replace printer mechanism.
1) Replace ink ribbon. 2) Replace printer mechanism.
Replace printer mechanism.
Terminates self printing. Check host computer connection. Turn power off and check I/F cable.
A
A
C Turn power on. Send print program from host computer.
3
61
TROUBLESHOOTING
3
Printing begins? YES
NO
D
Printing operation normal? YES Stop print program.
NO
1) Replace I/F cable. 2) Replace main logic board. 3) Check host computer.
END C B
Carriage moves with hand? YES
NO Replace printer mechanism.
Output (+33/35V, +5V) of power supply unit is normal? *4 NO Turn power off.
YES 1) Replace main logic board. 2) Replace printer mechanism. 3) Replace control panel board. NO
Fuse blows out? YES Replace fuse. Remove connector CN7 from main logic board Turn power on.
Replace power supply unit.
A
*4 Power Supply Unit LC-1511 +33V Line +33V ± 5% Between Pin 4 and Pin 3 of CN101 +5V Line +5V ± 5% +5V Line +5V ± 5% Between Pin 1 and Pin 2 of CN101 Between Pin 1 and Pin 2 of CN1 LC-1521 +35V Line +35V ± 5% Between Pin 4 and Pin 5 of CN1 4
62
TROUBLESHOOTING
4
Output of power supply unit is normal? *4 YES Turn power off.
NO
Replace power supply unit. Connect connector CN7 from main logic board Turn power on. NO
Fuse blows out? YES Replace fuse. 1) Replace main logic board. 2) Replace printer mechanism. 3) Replace control panel board.
A
*4 Power Supply Unit LC-1511 +33V Line +33V ± 5% Between Pin 4 and Pin 3 of CN101 +5V Line +5V ± 5% +5V Line +5V ± 5% Between Pin 1 and Pin 2 of CN101 Between Pin 1 and Pin 2 of CN1 LC-1521 +35V Line +35V ± 5% Between Pin 4 and Pin 5 of CN1
63
TROUBLESHOOTING
D *5 See (14) waveform in item 7 of Chapter 7. I/F signal is normal? *5 NO Ready condition? YES There is data transmission? NO Check hardware or host computer print program. YES NO YES
I/F mode set up properly? NO Change I/F mode.
YES
1) Replace I/F cable. 2) I/F cartridge 3) Replace main logic board.
A C
E
On line switch goes ON/OFF? YES On line lamp drive signal is normal? YES Replace control panel board.
NO
NO
Replace main logic board.
1) Replace control panel board. 2) Replace main logic board.
A
64
TROUBLESHOOTING 4. Repair by Parts Replacement
4-1. Does not Operate at All with Power on
START
+33/35V, +5V are supplied? *1 YES RESET signal becomes HIGH? *2 YES Crystal waveform is normal? *3 YES ROM OE signals become LOW? YES Carriage motor abnormal.
NO See 4-2. Power Supply Circuit Abnormal.
DC Power abnormal.
NO
Check RESET circuit; replace parts. NO
Check crystal circuit; replace parts. NO
1) Replace CPU or ROM. 2) Check relevant circuit.
Check operation.
*2 See (2) waveform in item 7 of Chapter 7. *3 See (1) waveform in item 7 of Chapter 7. *1 Power Supply Unit LC-1511 +33V Line +33V ± 5% Between Pin 4 and Pin 3 of CN101 +5V Line +5V ± 5% +5V Line +5V ± 5% Between Pin 1 and Pin 2 of CN101 Between Pin 1 and Pin 2 of CN1 LC-1521 +35V Line +35V ± 5% Between Pin 4 and Pin 5 of CN1
END
65
TROUBLESHOOTING
4-2. Power Supply Circuit Abnormal
(1) Remove connector CN101 from power supply unit.
START
Fuse F1 is blown? NO
YES Replace Fuse F1
Fuse is blown again? NO
YES
Replace 1) Power supply unit
The no load voltages are below; LC-1511 +33V Line +33V ± 5% Between Pin 4 and Pin 3 of CN101 +5V Line +5V ± 5% +5V Line +5V ± 5% Between Pin 1 and Pin 2 of CN101 Between Pin 1 and Pin 2 of CN1 LC-1521 +35V Line +35V ± 5% Between Pin 4 and Pin 5 of CN1
Check the 5V line of the main logic board.
END
66
TROUBLESHOOTING
4-3. Defective Motor Operation
START
Paper Feed Motor
START
Carriage Motor
LF-CMN signal is normal? *4 YES
NO Check and replace 1) TA3 2) TR11 3) Gate array
CR-ø1, ø2, ø3, ø4 are normal? *6 YES
NO
Check and replace 1) TA 4 2) Gate array
LF-ø1, ø2, ø3, ø4 are normal? *5 YES
NO Replace CR motor Check and replace 1) TA3 2) CPU
Check operation
END
Replace LF motor
Check operation
END
*4 See (10) and (11) waveform in item 7 of Chapter 7. *5 See (12) and (13) waveform in item 7 of Chapter 7. *6 See (8) and (9) waveform in item 7 of Chapter 7.
67
TROUBLESHOOTING
4-4. Defective Print Head Operation
START
Does not print at all? YES +33/35V line is supplied? YES
NO
NO
A specific pin does not work? NO
YES Check and replace · TA1 (HD1, 2, 4, 6) · TA2 (HD3, 7, 8, 9) · TR12 (HD5)
Check and replace 1) Power supply unit (Refer to item 4-2.)
Check and replace 1) TR12 ~ TR16 2) Gate array Print is light as whole? NO Check and replace 1) Gate array 2) CPU Adjust gap (Refer to Chapter 3.) YES
Head energizing control signal is normal? *7 YES
NO
Check and replace 1) Print head
*7 See (4) and (5) waveform in item 7 of Chapter 7.
END
68
TROUBLESHOOTING
4-5. Defective Interface Operation
START
Press on line switch to take on line. Send print program from host computer. *8 See (14) waveform in item 7 of Chapter 7. Is I/F signal normal? *8 YES NO
Incorrect print generated? NO
YES
Check I/F cable.
Check and replace 1) IC 4 2) Gate array 3) CPU
Check operation
END
69
CHAPTER 7 PARTS LIST
HOW TO USE PARTS LIST
(1) (2) DRWG. NO. This column shows the drawing number of the illustration. REVISED EDITION MARK This column shows a revision number. Part that have been added in the revised edition are indicated with "#". Part that have been abolished in the revised edition are indicated with "*". #1:First edition i¢ Second edition *1:First edition i¢ Second edition PARTS NO. Parts numbers must be notified when ordering replacement parts. Parts described as "NPN" have no parts number and are not in stock, i.e., unavailable. PARTS NAME Parts names must be notified when ordering replacement parts. Q'TY This column shows the number of the part used as indicated in the figure. REMARKS Where differences in specifications exist depending on location/destination. RANK Parts marked "S" are service parts. Service parts are recommended to be in stock for maintenance.
5-3. Control Panel Board ...................................... 104 5-3-1. Circuit Diagram ................................... 104 5-3-2. Component Layout ............................. 104 5-3-3. Parts List .............................................. 104 5-4. Connected Board ........................................... 105 5-4-1. Circuit Diagram ................................... 105 5-4-2. Component Layout ............................. 105 5-4-3. Parts List .............................................. 105 5-5. Power Supply Unit (LC-1511) ........................ 106 5-5-1. Circuit Diagram ................................... 106 5-5-2. Component Layout ............................. 107 5-5-3. Parts List .............................................. 108 5-6. Power Supply Unit (LC-1521) ........................ 110 5-6-1. Circuit Diagram ................................... 110 5-6-2. Component Layout ............................. 111 5-6-3. Parts List .............................................. 112 5-7. Serial Interface Board IS-8H192 (Option) ..... 114 5-7-1. Circuit Diagram ................................... 114 5-7-2. Component Layout ............................. 115 5-7-3. Parts List .............................................. 115
(3)
(4) (5) (6) (7)
1. Printer Assembly ...................................................... 72 1-1. Disassembly Drawing ...................................... 72 1-2. Parts List ........................................................... 73 2. Printer Mechanism .................................................... 74 2-1. Disassembly Drawing ...................................... 74 2-2. Parts List ........................................................... 75
3. Sub - Assembly ......................................................... 76 3-1. Push Tractor Unit ............................................. 76 3-2. Lower Cace Unit ............................................... 77 3-3. Upper Case Unit ............................................... 78 3-4. Paper Chute Unit .............................................. 79 3-5. Platen Unit ........................................................ 80 3-6. Carriage Unit (LC-1511) ................................... 81 3-7. Carriage Unit (LC-1521) ................................... 82 3-8. Frame L Unit ..................................................... 83 3-9. Frame R Unit ..................................................... 84 3-10. Serial IF Unit (Option) ...................................... 85 3-11. Pull Tractor Unit (Option) ................................ 86 3-12. ASF (Option) ..................................................... 87 3-13. Serial-Parallel Converter (Option) .................. 88 6. Serial - Parallel Converter Board ( Option ) .......... 116 6-1. Wiring Scheme ............................................... 116 4. Wiring Scheme of Printer ......................................... 89 6-2. I/F Board ......................................................... 117 6-2-1. Circuit diagram .................................... 117 5. Electrical Parts .......................................................... 92 6-2-2. Component Layout ............................. 117 5-1. Main Logic Board (LC-1511) ........................... 92 6-2-3. Parts List .............................................. 117 5-1-1. Circuit Diagram ..................................... 92 6-3. CPU Board ...................................................... 118 5-1-2. Component Layout ............................... 94 6-3-1. Circuit diagram ..................................... 118 5-1-3. Parts List ................................................ 95 6-3-2. Component Layout ............................. 119 5-2. Main Logic Board (LC-1521) ........................... 98 6-3-3. Parts List .............................................. 119 5-2-1. Circuit Diagram ..................................... 98 5-2-2. Component Layout ............................. 100 7. Waveform with Oscilloscope ................................. 120 5-2-3. Parts List .............................................. 101
7
1.
Printer Assembly
1-1. Disassembly Drawing
72
1-2. Parts List
DRWG.NO. REV. PARTS NO.
1 2 3 4 5 6 7 89428020 89428040 87817050 87816650 87816670 87816660 87815081 87815091 87814310 87814320 87814330 87814340 87814350 87814360 87814370 87814380 87814390 87814400 87811270 87810430 87810440 89510420 89510430 89510430 89510440 83903560 82902562 80995010 80701830 01914031 01914030 01903038 01903088 86424070 89597040 89597040 89597050 89596180 89596180 89596190 89596200 89590530 89590530 89590540 89590550 89595010 89595020
PARTS NAME
MECHANISM WITH HEAD DP505 (D) MECHANISM WITH HEAD DP505H (D) PUSH TRACTOR UNIT HA-15(D) PRINTER COVER UNIT HA-15(D) REAR COVER UNIT HA-15(D) PAPER GUIDE UNIT HA-15(D) MAIN LOGIC BD UNIT HA-15(D) MAIN LOGIC BD UNIT HA-15H(D) POWER SUPPLY UNIT HA-15 US(D) POWER SUPPLY UNIT HA-15 EC(D) POWER SUPPLY UNIT HA-15 UK(D) POWER SUPPLY UNIT HA-15 AS(D) POWER SUPPLY UNIT HA-15 HK(D) POWER SUPPLY UNIT HA-15H US(D) POWER SUPPLY UNIT HA-15H EC(D) POWER SUPPLY UNIT HA-15H UK(D) POWER SUPPLY UNIT HA-15H AS(D) POWER SUPPLY UNIT HA-15H HK(D) LOWER CASE UNIT HA-15(D) UPPER CASE UNIT HA-15(D) UPPER CASE UNIT HA-15H(D) RIBBON CASSETTE JAN Y9WH RIBBON CASSETTE UPC Y9WH RIBBON CASSETTE UPC Y9WH RIBBON CASSETTE SMH Y9WH PLATEN KNOB ZBA-10 RIBBON HOLDER 771 CABLE HOLDER 721 WIRE 18UL1007BLK055TT SCREW TAT 4-12 PT-FL SCREW TAT 4-15 PT SCREW TAT 3-10 PT-FL SCREW TAT 3-6 WS TOP GUIDE UNIT 505 SERIAL IF BD IS-8H192 UPC SERIAL IF BD IS-8H192 UPC SERIAL IF BD IS-8H192 JAN PULL TRACTOR UNIT PT15HAUPC PULL TRACTOR UNIT PT15HAUPC PULL TRACTOR UNIT PT15HAJAN PULL TRACTOR UNIT PT15HASMH ASF SF-15HA UPC ASF SF-15HA UPC ASF SF-15HA JAN ASF SF-15HA SMH S-P CONVERTER SPC-8K UPC S-P CONVERTER SPC-8K JAN
Q'TY 1511 1521
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 6 4 9 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 FOR FOR FOR FOR FOR FOR FOR FOR FOR FOR
REMARKS
RANK
S S S S S S S S S S S S S S S S S S S S S S S S S S S
US,TW EC,LA UK AS HK US,TW EC UK AS HK
8 9 10
1 1 1 1 1 1