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Epson 2180 - LQ B/W Dot-matrix Printer, Service Manual

The Epson 2180 - LQ B/W Dot-matrix Printer is a reliable and efficient device that boasts impressive printing capabilities. For users seeking assistance and guidance, the Service Manual is available for free download on our website. Unlock the full potential of this product by accessing the user manual at manualshive.com.

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Contents

Product Description

Specifications 

................................................................................................. 8

Features ................................................................................................................ 8
Accessories ........................................................................................................... 8
Printing Specifications  ........................................................................................... 9
Paper Handling ...................................................................................................... 9
Paper Specifications ............................................................................................ 11
Electrical Specifications ....................................................................................... 15
Reliability ............................................................................................................. 15
Safety Approvals  ................................................................................................. 15
CE Marking .......................................................................................................... 15

Firmware Specifications 

............................................................................... 16

Control Codes and Fonts  .................................................................................... 16
Interface Specifications  ....................................................................................... 18

Parallel Interface (Forward Channel) .................................................. 18
Parallel Interface (Reverse Channel)  ................................................. 18

Operation Instruction 

.................................................................................... 19

Control Panel ....................................................................................................... 19
Bi-directional Adjustment Function ...................................................................... 19
EEPROM Initialization  ......................................................................................... 20

Main Components 

......................................................................................... 21

C272MAIN Board  ................................................................................................ 22
Printer Mechanism  .............................................................................................. 23

Operating Principles

Control Circuit 

.............................................................................................. 25

Overview of the Control Circuit Operation ........................................................... 25
System Reset Circuit ........................................................................................... 26
Printhead Driver Circuit  ....................................................................................... 27
CR Motor Driver Circuit  ....................................................................................... 28
PF Motor Driver Circuit ........................................................................................ 28
EEPROM Control Circuit  ..................................................................................... 29
Sensor Circuit ...................................................................................................... 29

Disassembly and Assembly

Adjustment

Overview 

...................................................................................................... 33

Pre-operation for the Adjustment Program  .........................................................  33
Bi-D Adjustment  ..................................................................................................  35
TPE Level Reset  .................................................................................................  36
Writing the User-characteristic Data  ...................................................................  37

Troubleshooting

Overview 

...................................................................................................... 40

Troubleshooting Information 

........................................................................ 40

Printhead .............................................................................................................  40
Sensors ...............................................................................................................  40
Motors .................................................................................................................  40
Error Codes with Indicators and Buzzer ..............................................................  40

Unit Level Troubleshooting 

........................................................................... 41

Repairing the C165 PSB/PSE Board 

.............................................................. 41

Repairing the C272MAIN Board 

..................................................................... 41

Repairing the Printer Mechanism 

.................................................................. 43

Maintenance

Appendix

EEPROM Address Map 

................................................................................. 47

Connector Summary 

..................................................................................... 51

Component Layout 

....................................................................................... 53

Circuit Diagram 

............................................................................................ 55

Summary of Contents for 2180 - LQ B/W Dot-matrix Printer

Page 1: ...EPSONLQ 2180 Impact Serial Dot Matrix Printer SEDM98001 6 6 5 59 9 0 0 18 18 ...

Page 2: ...e contents of this manual However should any errors be detected SEIKO EPSON would greatly appreciate being informed of them The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof EPSON is a registered trademark of SEIKO EPSON CORPORATION General Notice Other product names used herein are for identification purpose o...

Page 3: ...NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS WARNING 1 REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN 2 MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE LISTED ON THE SERIAL NUMBER RATING PL...

Page 4: ... and mechanical operations of the produc CHAPTER 3 DISASSEMBLY AND ASSEMBLY Describes the step by step procedures for disassembling and assembling th product CHAPTER 4 ADJUSTMENTS Provides Epson approved methods for adjustment CHAPTER 5 TROUBLESHOOTING Provides the step by step procedures for troubleshooting CHAPTER 6 MAINTENANCE Provides preventive maintenance procedures and the lists of Epson ap...

Page 5: ...Revision Status Revision Issued Date Description A February 3 1999 First Release ...

Page 6: ...es Control Circuit 25 Overview of the Control Circuit Operation 25 System Reset Circuit 26 Printhead Driver Circuit 27 CR Motor Driver Circuit 28 PF Motor Driver Circuit 28 EEPROM Control Circuit 29 Sensor Circuit 29 Disassembly and Assembly Adjustment Overview 33 Pre operation for the Adjustment Program 33 Bi D Adjustment 35 TPE Level Reset 36 Writing the User characteristic Data 37 Troubleshooti...

Page 7: ... PRODUCTDESCRIPTION ...

Page 8: ... print volume between failure 23 million lines except printhead Bi directional Interface Optional Type B I F Level 2 supported Copy capability 1 original 5 copies 1 1 2 Accessories Items included in the printer carton Table 1 1 Items Included in the Printer Consumable items Table 1 2 Items Included in the Printer Optional items Additional items are shown in the table below Table 1 3 Items Included...

Page 9: ...44 mm 1 1 4 Paper Handling This section only describes the release lever setting adjust lever setting and some other specifications which are specific to LQ 2180 For the rest of the specifications see the LQ 2170 Service Manual Feeding method Friction feed front rear Push tractor feed front lever Push Pull tractor feed front rear Pull tractor feed front rear bottom Feed speed Normal mode Same as f...

Page 10: ...ontinuous paper Single sheet Multi part Continuous paper with labels Rear tractor Push tractor feed rear Continuous paper Single sheet Multi part Push Pull tractor feed rear Continuous paper Single sheet Multi part Full release Pull tractor feed front Continuous paper Single sheet Multi part Continuous paper with labels Pull tractor feed rear Continuous paper Single sheet Multi part Pull tractor f...

Page 11: ...0 065 0 0055 0 14 Weight g m2 lb 52 14 90 24 52 14 90 24 Quality Plain paper Recycled paper Paper that is not curled folded or crumpled Plain paper Recycled paper Paper that is not curled folded or crumpled Front Entry Rear Entry Minimum Maximum Minimum Maximum Width inch mm 3 9 100 16 5 420 3 9 100 16 5 420 Length inch mm 5 8 148 16 5 420 3 9 100 16 5 420 Copies 1 original 5 copies 1 original 5 c...

Page 12: ...aximum Width inch mm 3 9 100 7 8 200 3 9 100 7 8 200 Length inch mm 5 8 148 7 8 200 5 8 148 7 8 200 Thickness inch mm 0 0087 0 22 0 0087 0 22 Weight g m2 lb 192 51 192 51 Quality Plain paper Recycled paper Paper that is not curled folded or crumpled Plain paper Recycled paper Paper that is not curled folded or crumpled Front Entry Rear Entry Minimum Maximum Minimum Maximum Envelop No 6 Width inch ...

Page 13: ... mm 0 0025 0 065 0 018 0 46 0 0025 0 065 0 018 0 46 0 0025 0 065 0 018 0 46 Weight not multi part g m2 lb 52 14 82 22 52 14 82 22 52 14 82 22 Weight one sheet of multi part g m2 lb 40 12 58 15 40 12 58 15 40 12 58 15 Quality Plain paper Recycled paper Carbonless multi part paper Jointing Point glue or paper staple both side Front Entry Bottom Entry Rear Entry Min Max Min Max Min Max Label size See...

Page 14: ...ble 1 13 Roll Paper Front Entry Rear Entry Minimum Maximum Minimum Maximum Width inch mm 8 5 216 Length inch mm Thickness inch mm 0 0028 0 07 0 0035 0 09 Weight g m2 lb 52 3 14 82 22 Quality Plain paper Recycled paper Paper that is not curled folded or crumpled ...

Page 15: ...ersions Approximately 52 W ISO IEC10561 Letter pattern Energy Star compliant 1 1 7 Reliability MVBF 1 24 million lines except print data MTBF 10000 POH Printhead life 400 million strokes wire 1 Mean print volume between failure 1 1 8 Safety Approvals 120 V version Safety standards UL1950 CSA C22 2 No 950 EMI FCC part15 subpart B class B CSA C108 8 class B 230 V version Safety standards EN60950 TUV...

Page 16: ...ic PC865 Nordic PC APTEC Arabic PC708 Arabic PC720 Arabic PCAR864 Arabic PC863 Canadian French Abicomp BRASCII Roman 8 ISO Latin 1 Hebrew7 Hebrew8 PC862 Hebrew PC 858 lSO 8859 15 Not displayed in the Default setting mode International character set 14 countries and legal U S A France Germany U K Denmark 1 Sweden Italy Spain 1 Japan Norway Denmark 2 Spain 2 Latin America Korea Legal The internation...

Page 17: ...bicomp 1 lSOLatin1 ISO 8859 15 PC 437 US Standard Europe 1 PC 860 Portuguese 1 PC863 Canadian French 1 BRASCIl 1 Roman8 PC 858 PC 864 Arabic EPSON Draft EPSON Roman Not supported PC437Greek PC 853 Turkish PC 857 Turkish PC 869 Greek Code MJK CSFR lSO Latin 1T Turkish PC774 LST 1283 1993 1SO 8859 2 PC 866 UKR Ukraina PC 852 East Europe PC 855 Cyrillic PC 866 Russian MAZOWIA Poland lSO 8859 7 Latin ...

Page 18: ...hannel Transmission mode IEEE 1284 nibble mode Synchronization Refer to the IEEE 1284 specification Handshaking Refer to the IEEE 1284 specification Signal level IEEE 1284 level 1 device Data transmission timing Refer to the IEEE 1284 specification Device ID Pin assignment The pin assignment reverse channel is the same as for the LQ 2170 except for the functions of the pins below Pin No Function 1...

Page 19: ...t by the EEPROM clear is as shown in the next section This operation however does not affect such adjustment values as Bi d adjustment and TOP PE sensor adjustment 1 3 2 Bi directional Adjustment Function In this mode you can adjust the bidirectional alignment for the following three modes 1 Bi directional adjustment for draft mode 2 Bi directional adjustment for draft copy mode 3 Bi directional a...

Page 20: ...e front manual insertion 8 5 mm 12 Bottom margin rear tractor 11 inch 13 Bottom margin front tractor 11 inch 14 Font selection Roman 15 Pitch selection 10 cpi 16 Print direction setting Bi D 17 I F mode selection Auto 18 Auto I F wait time setting 10 sec 19 Auto line feed Off 20 Auto tear off Off No Item Factory setting 21 Skip over perforation Off 22 High speed draft On 23 Input buffer On 24 Soft...

Page 21: ... 4 Main Components The main components for the LQ 2180 are as follows They are designed for easy disassembly and repair work C272MAIN Board C165 PSB PSE Board C165 PNL Board Printer Mechanism Housing upper and lower cases Figure 1 3 Main Components for LQ 2180 ...

Page 22: ... on the version as shown in the red boxes in the figure below Figure 1 4 C272MAIN Board H e a d D r i v e T R A N S I S T O R C N 2 I C 1 C P U T M P 9 6 C 1 4 1 I C 3 G A T E A R R A Y E 0 5 B 4 2 I C 1 0 P R O M 4 M I C 5 E E P R O M I C 7 C G R O M 8 M C N 1 5 C N 1 4 C N 1 C N 1 0 I C 1 2 A 2 9 1 7 S L A 7 0 2 4 M C N 8 C N 9 C N 1 3 C N 1 2 C N 1 6 C N 7 C N 1 7 C N 3 C N 4 C N 5 C N 6 C N 1 ...

Page 23: ...Product Description Main Components 23 1 4 2 Printer Mechanism Appearance of the printer mechanism for the LQ 2180 is the same as for the LQ 2170 However please be aware of the printhead s incompatibility with the LQ 2180 ...

Page 24: ... 3 7 5 5 OPERATINGPRINCIPLES ...

Page 25: ...ure 2 2 Data Flow I C 7 n o t m o u n t e d I C 6 8 M C G 1 I C 8 1 M P S R A M C 1 6 5 P N L b o a r d C N 1 P a r a l l e l I F C N 2 T y p e B I F C N 1 4 S e r i a l I F C N 1 7 F a n C N 6 P E F r o n t I C 4 T M P 9 6 C C N 5 P E R e a r C N 7 T o p C N 4 C R H P C N 1 6 R e l e a s e 2 C N 1 2 R e l e a s e 1 C N 1 3 P G 1 I C 2 P S T 5 9 2 I C 1 1 S L A 7 0 2 4 M C N 1 1 C R I C 1 2 A 2 9 ...

Page 26: ... by unstable power supply Figure 2 3 Reset Circuit IC Name Location Function CPU IC4 Detects conditions of various sensors and controls phase change for the CR motor Gate Array IC3 Control the functions below Memory management Printhead drive Phase change for the PF motor EEPROM IC5 Contains such information as the factory setting values for the various adjustments and the operational record of th...

Page 27: ...nting is stopped when the temperature reaches the standard level 1 As the temperature drops to the standard level 2 printing begins again at a lower speed and then at a normal speed when the temperature lowers to the standard level 3 Once the current flows into the head drive resistor the coil for the corresponding pin is activated with the current The current flown into the coil is converted into...

Page 28: ...river Circuit The gate array IC3 manages the PF motor control The driver IC for the PF motor which enables the constant current drive receives the phase change signal directly from the gate array and determines the phase to which current flows The PF motor driver circuit is as shown below Figure 2 6 PF Motor Driver Circuit C P U I C 4 P G O 0 P G O 1 P G O 2 P G O 3 1 2 3 4 6 5 1 7 1 6 I N A I N A...

Page 29: ...oth the CPU and the gate array monitor and control the corresponding sensors conditions Note analog voltages are all monitored by the CPU ports Figure 2 8 Sensor Circuit C P U I C 4 9 1 0 1 1 1 2 A T 9 3 C 4 6 I C 5 P 7 0 P 7 1 P 7 2 P 7 3 C S S K D I D O 1 2 3 4 C P U I C 4 P 3 6 P 4 0 A N 2 P 5 3 P G S e n s o r R e l e a s e S e n s o r 1 R e l e a s e S e n s o r 2 5 V 5 V H P S e n s o r 5 V ...

Page 30: ... 3 7 5 6 DISASSEMBLYANDASSEMBLY ...

Page 31: ...LQ 2180 Revision A Disassembly and Assembly 31 The contents of the chapter Disassembly and Assembly is the same as for the LQ 2170 Service Manual ...

Page 32: ... 3 7 5 7 ADJUSTMENT ...

Page 33: ...gram starts up and the screen below appears Figure 4 1 LQSERIES EXE Initial Screen 6 Move the cursor to LQ 2180 and press the Enter key 7 The following screen appears C A U T I O N Though the conditions for each adjustment are the same as for the LQ 2170 the adjustment program used for the LQ 2180 is different Therefore observe the instructions given in the following sections C A U T I O N Do not ...

Page 34: ... 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 A U T I O N Select No if you have input a wrong model name in the screen shown in Figure 4 1 If you select Got the printer flashes the model name stored in the RAM to the EEPROM once and reads it again E P S O N S I D M P r i n t e r S e r v i c e P r o g r a m b o o t p r o c e s s D o y o u s t a r t t h e S e r v i c e P r o g r a m P e...

Page 35: ...amine the patterns for the three modes output in the previous steps and correct the value in the screen shown in Figure 4 5 until the vertical lines for the center value Data 0 in Figure 4 6 are aligned C A U T I O N If the printer is in the emulation mode characters output for the Bi D adjustment will be garbled If so turn ESC P2 on using the EEPROM Initialization mode L Q 2 1 8 0 S E R V I C E P...

Page 36: ... When the TPE level is reset FF is written and it approaches 00 as the time goes by If this operation is not performed paper out condition may be detected despite paper is set 1 Perform the pre operation See Section 4 1 1 2 Select TPE Reset in the main menu screen Figure 4 4 and press the Enter key The screen below appears Figure 4 7 Screen TPE Reset 3 Select Yes and press the Enter key FF is writ...

Page 37: ...tarting year month date and press the Enter key The following screen appears C A U T I O N When using this function the printer must be in the normally operative condition Make sure the printer is free from any error conditions such as paper out fatal error and so on Otherwise the function is not effective L Q 2 1 8 0 S E R V I C E P R O G R A M V e r s i o n 1 0 S e t o r R e p l y S t a r t i n ...

Page 38: ...6 digit data Be sure to input it correctly since this programs 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 t a r t i n g Y e a r M o n t h D a y I n p u t f o r m a t 1 9 9 9 1 1 9 9 0 1 0 1 P l e a s e i n p u t 6 d i g i t s ...

Page 39: ... TROUBLESHOOTING ...

Page 40: ...for each sensor is the same as for the LQ 2170 However be careful of the CN 12 and 16 that are not common to the LQ 2170 The change made for LQ 2180 is as shown below Table 5 1 Sensor Test Points 5 2 3 Motors The motor test points are the same as for the LQ 2170 5 2 4 Error Codes with Indicators and Buzzer The Error codes with Indicators and buzzer are the same as for the LQ 2170 Sensor Connector ...

Page 41: ...istance values and other information for each component of C272 MAIN Board NOTE This information is necessary only for servicers who repair to the component level Servicers who repair to the unit level including all servicers in the U S can ignore this section Table 5 2 Repairing the C272MAIN Board 1 3 C165 MAIN Board 272MAIN Board CN12 CN12 or CN16 Problem Cause Checkpoint Solution The printer do...

Page 42: ...eck the output signal at pins 68 69 70 and 71 of IC3 If there is no output signal replace IC3 Problem Cause Checkpoint Solution Paper feed is abnormal IC1 is defective IC3 is defective IC2 is defective Check input signal waveform at pins 1 2 23 and 24 of IC2 Check output signal waveform at pins 6 3 18 and 21 of IC12 If the input signal is not correct replace IC3 If the input signal is correct and ...

Page 43: ...A Troubleshooting Repairing the Printer Mechanism 43 5 6 Repairing the Printer Mechanism The information for this section is also the same as for the LQ 2170 except for the point below Point Table 5 8 CN12 CN12 or CN16 ...

Page 44: ... MAINTENANCE ...

Page 45: ...LQ 2180 Revision A Maintenance 45 The contents of the chapter Maintenance is the same as for the LQ 2170 Service Manual ...

Page 46: ... APPENDIX ...

Page 47: ...07H Page length for front tractor 1 to 22x360 by 1 360 inch 0000H 11 inch the default 0000H 11 inch 0000H 11 inch 08H 09H Page length for CSF bin 1 1 to 22x360 by 1 360 inch 0000H 22 inch the default 0000H 22 inch 0000H 22 inch 0AH 0BH Page length for CSF bin 2 1 to 22x360 by 1 360 inch 0000H 22 inch the default 0000H 22 inch 0000H 22 inch 0CH 0DH TOF adjustment value for rear tractor 60 to 360 4 ...

Page 48: ... feed 0 Off 1 On b1 Auto tear off 0 Off 1 On b2 Skip over perforation 0 Off 1 On b3 High speed draft 0 On 1 Off b4 Input buffer 0 On 1 Off b5 reserved b6 reserved b7 reserved 00H 00H Address Data Data Format Q pit data Factory setting 23H Software 0 slash Buzzer Roll paper Auto CR A G M b0 Software 0 ESC P2 1 IBM 2391 Plus b1 0 slash 0 Off 1 On b2 Buzzer 0 On 1 Off b3 Roll paper 0 Off 1 On b4 Auto...

Page 49: ... 00H 34H 37H Driving Hour 0 0FFFFFFFFH minutes 000000 00H 000000 00H 38H 3BH Driving Line Count 0 0FFFFFFFFH count 000000 00H 000000 00H Address Data Data Format Q pit data Factory setting 3CH Starting Year 0 99 the last two figures of Anno Domini 00H 00H 3DH Starting Month 1 12 00H 00H 3EH Starting Date 1 31 00H 00H 3FH Black paper mode paper width measure b0 black paper mode 0 Off 1 On b1 paper ...

Page 50: ...0 Table2 1 Table1 00H 00H 70H reserved 00H 00H 71H Check sum of Area 2 00H 00H Area 3 72H Vp adjustment value 80H a 73H Vp adjustment value complement of 72H 7FH a 74H Bi d adjustment value for high speed draft draft mode 12 to 12 by 1 720 inch 00H a 75H Bi d adjustment value for draft copy mode 12 to 12 by 1 720 inch 00H a 76H Bi d adjustment value for LQ mode 12 to 12 by 1 720 inch 00H a 77H res...

Page 51: ...t o r C R M o t o r C N 2 C N 1 C N 1 4 C S F C N 1 H o s t C o m p u t e r P a r a l l e l I F C N 2 O p t i o n I F C 1 6 5 P N L B o a r d F a n C N 1 5 C N 1 7 C N 7 C N 4 C N 6 C N 5 C N 1 3 C N 1 1 C N 1 0 C N 1 2 C N 1 6 C 2 7 2 M A I N B o a r d A s s e m b l y C 1 6 6 P S B P S E B o a r d Board Connector Function Pins C272 MAIN Board CN1 Parallel interface 36 CN2 Type B interface 36 CN3 ...

Page 52: ...only LQ 2170 C165MAIN LQ 2180 C272MAIN Connector Function Pin alignment Connector Function Pin alignment 1 CN14 CSF 1 A 2 B 3 A 4 B 5 HOLD 6 5V 7 GND 8 GND 9 35V 10 35V CN14 CSF 1 35V 2 5V 3 HOLD 4 35V 5 A 6 B 7 GND 8 GND 9 A 10 B 2 CN12 Release lever position 1 RELEASE 1 2 GND 3 RELEASE 2 4 GND CN12 Release lever position 1 RELEASE 1 2 GND CN16 Release lever position 1 RELEASE 2 2 GND 3 CN17 Fan ...

Page 53: ...LQ 2180 Revision A Appendix Component Layout 53 7 3 Component Layout Figure 7 3 C272Main Component Layout Component Side ...

Page 54: ...LQ 2180 Revision A Appendix Component Layout 54 Figure 7 4 C272Main Component Layout Soldering Side ...

Page 55: ...LQ 2180 Revision A Appendix Circuit Diagram 55 7 4 Circuit Diagram See the following page for the dircuit digram of the C272 Main Board ...

Page 56: ......

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