Page 3 - PRECAUTIONS; DANGER; OR REPAIR PROCEDURES.; WARNING; REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.
PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment. DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by DA...
Page 4 - PREFACE; Provides a general overview and specifications of the product.
PREFACE This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of EPSON LQ-2080. The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on ...
Page 5 - Revision Status
Revision Status Revision Issued Date Description A March 08, 1999 First release
Page 6 - Revision A; Contents
Revision A 6 Contents Product Description Specifications ................................................................................................. 8 Features ................................................................................................................ 8 Accessories ..........
Page 7 - PRODUCT DESCRIPTION
Page 8 - tables; Table 1-1. Items Included with the Printer
LQ-2080 Revision A Product Description Specifications 8 1.1 Specifications The LQ-2080 is the revised model of the already existing LQ-2070. Since the specifications for the both products are mostly common, the information included in this section is limited to the items that are specific to LQ-2080...
Page 9 - Hardware Specifications; original + 4 copies; Table 1-3. Print Speed and Printable Columns; Feed speed
LQ-2080 Revision A Product Description Hardware Specifications 9 1.2 Hardware Specifications This section also contains information specific to the LQ-2080. For other information, refer to the LQ-2070 Service Manual. 1.2.1 Printing Method See the LQ-2070 Service Manual. 1.2.2 Printing Specifications...
Page 10 - See the following table.; Table 1-5. Adjust Lever Setting Position
LQ-2080 Revision A Product Description Hardware Specifications 10 Release lever: See the following table. Table 1-4. Release Lever Settings Paper thickness lever: See the following table. Table 1-5. Adjust Lever Setting Position Lever Position Paper path / Feeder Paper / Media Friction Manual insert...
Page 11 - Card
LQ-2080 Revision A Product Description Hardware Specifications 11 1.2.4 Paper Specifications Cut Sheet (Single sheet, Multipart) Card 1.2.5 Ribbon Specificatio Ribbon life: Approximately 8 million characters(LQ 10 cpi, 48 dots / character) 1.2.6 Electrical Specifications 120 V Version Input voltage ...
Page 12 - Approximately 13 kg
LQ-2080 Revision A Product Description Hardware Specifications 12 1.2.9 Safety Approvals 120 V version Safety standards: UL1950, CSA C22.2 No. 950 EMI: FCC part15 subpart B class BCSA C108.8 class B 230 V version Safety standards: EN60950 (TUV) EMI: EN55022 (CISPR pub.22) class BAS/NZS 3548 class B ...
Page 13 - Firmware Specifications; * Not displayed in the Default setting mode.
LQ-2080 Revision A Product Description Firmware Specifications 13 1.3 Firmware Specifications This section describes the firmware specifications for the LQ-2080. 1.3.1 Control Codes and Fonts Control codes: ESC/P2 and IBM 2391 Plus Emulation Character tables: Standard version (13 character tables) I...
Page 14 - Table 1-6. Character Tables and Available Typefaces
LQ-2080 Revision A Product Description Firmware Specifications 14 Table 1-6. Character Tables and Available Typefaces Character Tables Bit map font Scaleable font Standard version Italic table* 1 PC 850 (Multilingual)* 1 PC 861 (Icelandic)* 1 PC 863(Canadian-French)* 1 Abicomp* 1 Roman 8PC 858 PC 43...
Page 15 - IEEE-1284 compatibility mode
LQ-2080 Revision A Product Description Firmware Specifications 15 1.3.2 Interface Specifications This section only provides information which is specific to the LQ-2080. For other information, refer to the LQ-2070 Service Manual. 1.3.2.1 Parallel Interface (Forward Channel) Transmission mode: IEEE-1...
Page 16 - Operation Instruction; Operations at power on
LQ-2080 Revision A Product Description Operation Instruction 16 1.4 Operation Instruction This section provides information on the LQ-2080 control panel buttons, LED, and operations. Since the layout and functions of the control panel are mostly common to those of LQ-2070, this section only provides...
Page 17 - Status code indicated by the LEDs; Table 1-9. Status Code Indicated by the LEDs
LQ-2080 Revision A Product Description Operation Instruction 17 Status code indicated by the LEDs Table 1-9. Status Code Indicated by the LEDs BuzzerPaper out error: Beeper sounds (...) * Release lever operation error: Beeper sounds (- - - - -)*Illegal panel operation: Beeper sounds (.)* * The descr...
Page 19 - Printer Mechanism
LQ-2080 Revision A Product Description Main Components 19 1.5 Main Components The main components for the LQ-2080 are as follows. They are designed for easy disassembly and repair work. C273 Main Board C166 PSB/PSE Board C165 PNL Board Printer Mechanism Housing (upper and lower cases) Figure 1-1. Ma...
Page 20 - Table 1-12. Relationship between Program ROM and CG
LQ-2080 Revision A Product Description Main Components 20 1.5.1 C273 Main Board Table 1-12. Relationship between Program ROM and CG NOTE: " " represents the version information. Figure 1-2. C273 Main Board Destination Program ROM(IC10) CG ROM(IC6) Comments Standard 8 M bit TDD21 None Standar...
Page 21 - OPERATING PRINCIPLES
Page 22 - Printer Mechanism Operations
LQ-2080 Revision A Operating Principles Printer Mechanism Operations 22 2.1 Printer Mechanism Operations See the LQ-2070 Service Manual. 2.2 Power Supply Operation See the LQ-2070 Service Manual.
Page 23 - Figure 2-1. Control Circuit Block Diagram; Overview of Control Circuit Operation
LQ-2080 Revision A Operating Principles Control Circuit 23 2.3 Control Circuit The control circuit consists of the C273 Main Board assembly and C165 PNL board This section describes the major components and explains how the boards work. I C 7 ( n o t m o u n t e d ) I C 6 ( C G - R O M ) * 1 I C 8 (...
Page 26 - printing is stopped.
LQ-2080 Revision A Operating Principles Control Circuit 26 2.3.2 Printhead Driver Circuit The standard voltage for the A/D converter is made in ZD1 and input to CPU port 78. Based on this standard voltage, the A/D converter in the CPU operates. Port 74 monitors the +35 V line between R139 and R140 t...
Page 27 - The CR motor driver circuit is shown below.
LQ-2080 Revision A Operating Principles Control Circuit 27 2.3.3 CR Motor Driver Circuit The CR motor driver circuit is shown below. Figure 2-6. CR Motor Driver Circuit The carriage motor driver circuit controls the CR motor, using an open-loop, constant drive arrangement. 2-2, 1-2, and W1-2 phases ...
Page 29 - The figure below shows the PF motor driver circuit.
LQ-2080 Revision A Operating Principles Control Circuit 29 2.3.4 PF Motor Driver Circuit The figure below shows the PF motor driver circuit. Figure 2-7. PF Motor Driver Circuit The PF driver current is controlled on the Gate Array and the signals are output via port 123 (PFI0A), port 121 (PFI1A), po...
Page 31 - DISASSEMBLY AND ASSEMBLY
Page 33 - ADJUSTMENT
Page 34 - Set the release lever to the continuous paper position.; If you omit this operation, the printer will perform Uni-D; screen below appears.; Use single continuous paper.; P l e a s e s e l e c t t h e m o d e l n a m e .
LQ-2080 Revision A Adjustment Overview 34 4.1 Overview The adjustment items required for the LQ-2080 are the same as for the LQ-2070. Therefore, see Table 4-1 in the LQ-2170 Service Manual and perform any necessary adjustment after disassembling/assembling the printer. 4.1.1 Pre-operation for the Ad...
Page 35 - Figure 4-2. Destination Selection Screen; S e l e c t t h e d e s t i n a t i o n .
LQ-2080 Revision A Adjustment Overview 35 Figure 4-2. Destination Selection Screen 8. Check the printer to be adjusted for the destination and press the Enter key. 9. The following screen appears. Figure 4-3. Main Menu Selection Screen 10. Select “Perform”. The following screen appears. Figure 4-4. ...
Page 36 - the draft mode. The printer prints the following pattern.; D r a f t M o d e
LQ-2080 Revision A Adjustment Overview 36 4.1.2 Bi-D Adjustment This adjustment is made after the main board or the CR motor has been replaced. The purpose of this adjustment is to electrically correct the head wire’s point of impact during Bi-D printing. The adjusted value is stored in the specific...
Page 37 - When this adjustment is completed, if you need to perform another; < R e s e t T o p p a p e r a n d d e t e c t i o n l e v e l >; Y e s
LQ-2080 Revision A Adjustment Overview 37 6. When this adjustment is completed, if you need to perform another adjustment using this program, you can continue without turning off the printer. 4.1.3 TPE Level Reset Make this adjustment when the main board or Top PE Sensor has been replaced. Generally...
Page 38 - Select “Set or Reply Starting Date” and press the Enter key. The; E S C : Q u i t U P / D o w n : S e l e c t E N T E R : D e t e r m i n e; C h a r a c t e r i s t i c s t a t u s c o d e
LQ-2080 Revision A Adjustment Overview 38 4.1.4 Writing the User-characteristic Data Use this function to check the specific records of the printer used by your customer. Also, you can renew the starting date using this program. Since there is no standardized service operation using this function, y...
Page 39 - S e t t i n g S t a r t i n g Y e a r / M o n t h / D a y
LQ-2080 Revision A Adjustment Overview 39 Figure 4-10. Screen - Setting Starting Year / Month / Date 5. Input a 6-digit data. Be sure to input it correctly since this program does not perform comparison check with the system timer. If you input a wrong data, start from the beginning. S e t t i n g S...
Page 40 - TROUBLESHOOTING
Page 41 - Troubleshooting Information; The Error codes with Indicators and Buzzer; Error codes indicated by the LEDs; Table 5-1. Error Code Indicated by the LEDs; Buzzer
LQ-2080 Revision A Troubleshooting Overview 41 5.1 Overview This chapter contains information necessary for troubleshooting. Like other chapters, this chapter does not include the information common to the LQ-2070. 5.2 Troubleshooting Information This section gives you troubleshooting information to...
Page 42 - Unit Level Troubleshooting; Point: Main board number; Repairing the C273 Main Board
LQ-2080 Revision A Troubleshooting Unit Level Troubleshooting 42 5.3 Unit Level Troubleshooting The information for this section is the same as for the LQ-2070 except for the point below: Point: Main board number 5.4 Repairing the C166 PSB/PSE Board See LQ-2070 Service Manual. 5.5 Repairing the C273...
Page 44 - Repairing the Printer Mechanism
LQ-2080 Revision A Troubleshooting Repairing the Printer Mechanism 44 5.6 Repairing the Printer Mechanism The information for this section is also the same as for the LQ-2070 except for the point below. Point: Table 5-8 (LQ-2070 Service Manual) <LQ-2070> <LQ-2080> 39.3 ohms → 29.6 ohms
Page 45 - MAINTENANCE
Page 47 - APPENDIX
Page 48 - EEPROM Address Map; NOTE: The data of two or more bytes are assigned in such way as; lower byte to lower address, higher byte to higher address.
LQ-2080 Revision A Appendix EEPROM Address Map 48 7.1 EEPROM Address Map NOTE: The data of two or more bytes are assigned in such way as lower byte to lower address, higher byte to higher address. Table 7-1. EEPROM Address Map (1/7) Table 7-2. EEPROM Address Map (2/7) Address Data Data Format Q-pit ...
Page 51 - *a) These data are fixed by each printer hardware in the factory. They; Connector Summary
LQ-2080 Revision A Appendix Connector Summary 51 Table 7-7. EEPROM Address Map (7/7) *a) These data are fixed by each printer hardware in the factory. They should not be changed afterwards. 7.2 Connector Summary The information in this section is common to the LQ-2070 Service Manual except for the p...
Page 52 - Component Layout; Figure 7-1. C273 Main Board Component Layout - Component Side
LQ-2080 Revision A Appendix Component Layout 52 7.3 Component Layout Figure 7-1. C273 Main Board Component Layout - Component Side
Page 53 - Figure 7-2. C273 Main Board Component Layout - Soldering Side
LQ-2080 Revision A Appendix Component Layout 53 Figure 7-2. C273 Main Board Component Layout - Soldering Side