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Epson Stylus Color 300, Service Manual

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Epson Stylus Color 300 Service Manual Download Page 33

Chapter 5 Troubleshooting

Rev. A

5-1

5.1 OVERVIEW

Since the printer mechanism and the power supply unit are remains the same with EPSON
Stylus Color 200/Stylus 200, this chapter describes only the checkpoints on the main control
circuit; C224 MAIN Board.

5.1.1  Unit Repair - C224 MAIN Board

The table below provides various symptom, likely causes and checkpoint, relating to the
C224 MAIN Board.

Symptom

Condition

Cause

Checkpoint

Solution

Printer does
not operate
at all.

CPU does
not operate.

Reset IC (IC9)
is defective

Check the signal waveform at pin 6 of
IC9:

Replace IC9

Oscillator
(CR2) or CPU
(IC2) is
defective

Is the signal waveform output from CR2
correct at pin 37/38?

Correct:
Replace IC2
Incorrect:
Replace CR2

ASIC does
not operate.

ASIC (IC1) is
defective

Is the signal waveform at pins 52 of IC1
correct?

Replace IC1

Summary of Contents for Stylus Color 300

Page 1: ...EPSON TERMINAL PRINTER EPSON Stylus Color 300 SERVICE MANUAL EPSON 4007996 ...

Page 2: ...ontents of this manual However should any errors be deteced 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 only ...

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: ...cribes the theory of electrical and mechanical operations of the product CHAPTER 3 TROUBLESHOOTING Provides the step by step procedures for troubleshooting CHAPTER 4 DISASSEMBLY AND ASSEMBLY Describes the step by step procedures for disassembling and assembling the product CHAPTER 5 ADJUSTMENTS Provides Epson approved methods for adjustment CHAPTER 6 MAINTENANCE Provides preventive maintenance pro...

Page 5: ...REVISION SHEET Revision Issued Contents A July 2 1997 First issue ...

Page 6: ...TABLE OF CONTENTS CHAPTER 1 PRODUCT DESCRIPTIONS CHAPTER 2 OPERATION PRINCIPLES CHAPTER 3 DISASSEMBLY AND ASSEMBLY CHAPTER 4 ADJUSTMENT CHAPTER 5 TROUBLESHOOTING CHAPTER 6 MAINTENANCE APPENDIX ...

Page 7: ...fication 1 8 1 2 9 Electrical Specifications 1 9 1 2 10 Environmental Conditions 1 9 1 2 11 Reliability 1 10 1 2 12 Acoustic Noise 1 10 1 2 13 Safety Approvals 1 10 1 2 14 CE Marking 1 10 1 2 15 Physical Specifications 1 11 1 3 INTERFACE SPECIFICATION 1 12 1 4 OPERATIONS 1 12 1 4 1 Control Panel 1 12 1 4 1 1 Buttons 1 12 1 4 1 2 LED Indicators 1 14 1 5 MAIN COMPONENTS 1 15 1 5 1 Printer Mechanism ...

Page 8: ...he major features of this printer are Standard four colors printing Both black and color CMY print nozzles are built in one piece printhead High quality color printing 360 dpi Horizontal Vertical printing and semi 720 dpi Vertical only printing High speed printing 200 CPS at 10CPI Pica text printing in Black color Standard Bi directional Parallel Interface IEEE1284 Nibble mode ...

Page 9: ...1411mm 1 60 0 4233mm 16 360 1 1289mm 104 360 7 3378mm 104 360 7 3378mm 16 360 1 1289mm 16 360 1 1289mm Print direction Paper feed Viewed from the back of the printhead Figure 1 1 Printhead Nozzle Configuration Print direction Bi directional printing with logical seeking Print speed Text 200 CPS LQ 10CPI in Black color Graphics 20 IPS at 360DPI Printable column Text 80 columns 10CPI Graphics 2880 d...

Page 10: ...ol ESC EM Paper feeding Form feed FF Line feed LF Line spacing ESC Carriage operation Carriage return CR Page formatting Page length ESC C Top Bottom margin ESC c Print position control Horizontal print position ESC ESC Vertical print position ESC V ESC v Spacing Define unit ESC U Graphics Graphics mode ESC G Raster graphics ESC 1 Color control Printing color ESC r 2 Note EPSON Stylus Color 300 re...

Page 11: ...m 8 5 279 mm 11 0 B5 182 mm 7 2 257 mm 10 1 LEGAL 216 mm 8 5 356 mm 14 0 Statement 139 7 mm 5 5 215 9 mm 8 5 Executive 184 2 mm 7 25 266 7 mm 10 5 Thickness 0 08 0 11 mm 0 003 0 004 Weight 64 90 g m 17 24 lb Quality Plain paper Recycled paper EPSON special medias Envelope Size Table 1 2 Paper Size Envelope Type Width Length No 10 241 mm 9 1 2 104 8 mm 4 1 8 DL 220 mm 8 7 110 mm 4 3 Thickness 0 16 ...

Page 12: ...m 11 7 Transparency LETTER 216 mm 8 5 279 mm 11 0 Glossy Paper A4 210 mm 8 3 297 mm 11 7 Glossy Paper LETTER 216 mm 8 5 279 mm 11 0 Index Card A6 size 105 mm 4 1 148 mm 5 8 Quality Exclusive transparency Glossy Paper Thickness 0 23 mm 0 0091 for Index Card Note Set the paper thickness lever to THICK PAPER position for index card printing ...

Page 13: ...3 297 mm 11 7 3 0 mm 0 12 3 0 mm 0 12 3 0 mm 0 12 14 0 mm 0 55 LETTER 216 mm 8 5 279 mm 11 0 LEGAL 216 mm 8 5 356 mm 14 A6 105 mm 4 1 148 mm 5 8 B5 182 mm 7 2 257 mm 10 1 Statement 139 7 mm 5 5 215 9 mm 8 5 Executive 184 2 mm 7 25 266 7 mm 10 5 No 10 241 mm 9 5 105 mm 4 1 33 8 mm 1 33 DL 220 mm 8 7 110 mm 4 3 13 8 mm 0 54 Printable Area PW LM RM TM PL BM CUT SHEET PW LM RM PL TM BM ENVELOPE Printa...

Page 14: ...r Select Lever Setting The built in ASF is equipped with the adjust lever and the position of lever should be set to appropriate position according to the type of paper used for the printing Table 1 6 Paper Select Lever Setting Paper Feeding Paper Type Source Select Lever Position Cut Sheet Envelope ASF Thick No OK Normal OK No Manual Thick OK OK Insertion Normal No No Paper Thickness Lever Forwar...

Page 15: ...at 360 DPI monochrome printing on A4 Validity 2 years in sealed package 6 months out of package Storage conditions Transit Package 30 60 C 120 hours or less at 60 C and a month or less at 40 C Storage Package 30 40 C A month or less at 40 C After installation 20 40 C A month or less at 40 C Weight 69 3 gram internal ink amount 41 1g Dimensions 45 9 W 56 5 D 38 5 0 3 H mm 56 5 mm 38 5 mm 45 9 mm Bl...

Page 16: ...00 VDC between AC line and chassis 10 MΩ Min applying 500 VDC between AC line and chassis Dielectric Strength AC 1000 Vrms for 1 min or AC 1200 Vrms for 1 sec between AC line and chassis AC 1500 Vrms for 1 min between AC line and chassis 1 2 10 Environmental Conditions Table 1 8 Environmental Conditions Condition Operating Non operating Temperature 10 35 C 3 20 60 C 1 Humidity 20 80 2 3 5 85 1 2 S...

Page 17: ...Safety Approvals Table 1 9 Safety Approvals Item 120V Version 220 240V Version Safety Standard UL1950 with D3 CSA C22 2 No 950 with D3 EN 60950 TÜV NEMKO EMI FCC part 15 subpart B class B CSA C108 8 class B EN55022 CISPR Pub 22 class B AS NSZ 3548 class B 1 2 14 CE Marking 220 240V Version only Low Voltage Directive 73 26 EEC EN60950 EMC Directive89 336 EEC EN55022 Class B EN61000 3 2 EN61000 3 3 ...

Page 18: ...oduct Descriptions Rev A 1 11 1 2 15 Physical Specifications Dimensions 397 W 319 D 269 H mm operating condition Weight 3 9 Kg exclude the printhead and the ink cartridge 269 mm 397 mm 319 mm Figure 1 6 Dimensions ...

Page 19: ... Panel 1 4 1 1 Buttons Normal Operation Table 1 10 Control Panel Normal Operations Button Operation Function LOAD EJECT Pressed less than 3 sec Loads or ejects the paper When the carriage is at the ink cartridge replace position return the carriage to the home position Pressed for 3 sec Starts the ink cartridge replace operation and the carriage moves to the ink cartridge replace position CLEANING...

Page 20: ...ns to press 2 nd buttons while these LED are blinking Self test printing The printer prints the self check test pattern The printer prints a page at a time and pauses between each page When the printer is in pause state press LOAD EJECT button to resume printing and turn the power off to cancel the self test printing Status printing The printer prints Firmware version ink counter value and a nozzl...

Page 21: ... Priority Ink low printable ON Blink Low Ink out not printable ON ON Paper out ON ON Paper jam ON Blink No ink cartridge ON ON Medium No printhead ON Blink Fast Replacing head ink cartridge Printing During ink sequence Blink High EEPROM initialization ON Blink Blink Button s is pressed at power on Blink Blink Fast Blink Fast Carriage control error Fatal error Blink ON ON Highest Maintenance reques...

Page 22: ...ith the detachable 4 colors one piece printhead unit 1 5 2 Main Control Board C224 MAIN Board The main control board C224 MAIN board is controlled by the M37721S2BFP 16bit CPU IC2 which driven with 25MHz clock speed The E05B49KA custom gate array IC1 controls the memories ROM and RAM a built in parallel interface circuit and the printhead drive voltage generation circuit 1 5 3 Power Supply Unit C1...

Page 23: ...CHAPTER 2 OPERATING PRINCIPLES 2 1 OVERVIEW 2 1 2 1 1 PRINTER MECHANISM 2 1 2 1 1 1 Printhead Unit 2 1 ...

Page 24: ...1 M1 Y1 C11 M11 Y11 1 180 0 1411mm 1 60 0 4233mm 1 180 0 1411mm 1 180 0 1411mm 1 180 0 1411mm 1 60 0 4233mm 16 360 1 1289mm 104 360 7 3378mm 104 360 7 3378mm 16 360 1 1289mm 16 360 1 1289mm Print direction Paper feed Viewed from the back of the printhead Figure 2 1 Printhead Nozzle Configuration To compensate the electrical characteristics variation of the piezo electric element used on each print...

Page 25: ...CHAPTER 3 DISASSEMBLY AND ASSEMBLY 3 1 OVERVIEW 3 1 3 1 1 Upper Case Removal 3 1 3 1 2 C224 MAIN Board Removal 3 2 ...

Page 26: ...nique to this printer 3 1 1 Upper Case Removal 1 Remove the sheet guide from the printer 2 Move the paper select lever to the backward position then remove one screw CBP M2x6 securing a knob to the paper select lever 3 Open the printer cover then remove five screws one CBB M4x6 and four CBP M4x12 securing the upper case to the bottom case 4 Remove the upper case by lifting it upward Printer Cover ...

Page 27: ...ve five screws CBB M3x6 four screws fixing the shield plate directly to the C224 MAIN Board and one screw fixing the metal bracket to the shield plate 3 Disconnect all cables connected to the C224 MAIN Board and remove the C224 MAIN Board C224 MAIN BOARD SHIELD PLATE Bracket CBB M3x6 CBB M3x6 Figure 3 2 C224 MAIN Board Removal ...

Page 28: ... 4 1 OVERVIEW 4 1 4 1 1 Adjustment Tools 4 1 4 1 2 Applicable Repair 4 1 4 1 3 Adjustment Program 4 2 4 1 3 1 Zig Zag Adjustment 4 2 4 1 3 2 Bi D Adjustment 4 2 4 1 3 3 Head Angle Adjustment 4 2 4 1 3 4 RESET Fucntion 4 3 ...

Page 29: ...CLR300 EXE Head Angle Adjustment Bi D Adjustment Zig Zag Alignment Adjustment RESET function for Ink counter Initial charge flag Protect counter Waste ink counter 4 1 2 Applicable Repair An appropriate adjustment have to be made according to the type of repair performed Table 4 2 Applicable Adjustment Repair Applicable Adjustment C224 MAIN board is replaced 1 Zig Zag Alignment Adjustment Bi D Adju...

Page 30: ...ted within single print pass become jagged Verify the check pattern printed by the program and specify the parameter until the check pattern become aligned most properly 4 1 3 2 Bi D Adjustment This adjustment is required to specify the control parameter that determines the print timing in bi directional printing If the adjustment is wrong the print position at each print direction is not aligned ...

Page 31: ...t main board printer mechanism or the printhead is replaced to new one reset the appropriate information counter value or flag Table 4 3 RESET Operation Type of Repair Required Operation C224 MAIN board is replaced Ink Cartridge replacement Waste ink pad replacement RESET Ink counter RESET Protect counter Printer Mechanism is replaced RESET Initial charge flag RESET Ink counter Ink Cartridge repla...

Page 32: ...CHAPTER 5 TROUBLESHOOTING 5 1 OVERVIEW 5 1 5 1 1 Unit Repair C224 MAIN Board 5 1 ...

Page 33: ...vides various symptom likely causes and checkpoint relating to the C224 MAIN Board Symptom Condition Cause Checkpoint Solution Printer does not operate at all CPU does not operate Reset IC IC9 is defective Check the signal waveform at pin 6 of IC9 Replace IC9 Oscillator CR2 or CPU IC2 is defective Is the signal waveform output from CR2 correct at pin 37 38 Correct Replace IC2 Incorrect Replace CR2...

Page 34: ...e voltage generation circuit does not operate Check waveform of the signal VO Replace any defective components Q1 2 4 7 8 or QM1 3 4 5 6 7 8 Carriage does not operate normally Drive signals are not output correctly CPU IC2 is defective Is the signal waveform correct at pin 5 6 of IC2 Replace IC2 CR Motor driver IC8 is defective Is the signal waveform correct at pin 3 6 18 21 of IC8 Correct Replace...

Page 35: ... does not advance normally Drive signals are not output correctly CPU IC2 is defective Is the signal waveform correcr at pin 7 8 of IC2 Replace IC2 PF Motor driver IC16 is defective Is the signal waveform correct at pin 14 17 20 23 of IC16 Correct Replace PF Motor Incorrect Replace IC16 ...

Page 36: ...CHAPTER 6 MAINTENANCE 6 1 OVERVIEW 6 1 6 1 1 Maintenance Request 6 1 ...

Page 37: ...ion is stored in the EEPROM on the main board as the protect counter A value for ink system operation management When the counter value reaches the predetermined value the printer detects it as Maintenance Request error and displays the error status with the control panel LED indicators see Table 1 12 at Chapter 1 Section 1 4 1 2 LED Indicators When this error displayed replace the waste ink pad t...

Page 38: ...APPENDIX A 1 OVERVIEW A 1 A 2 EEPROM Address Map A 2 A 3 CIRCUIT DIAGRAM C224 MAIN BOARD A 4 ...

Page 39: ...main board of EPSON Stylus Color 300 is C224 MAIN BOARD and each connector and its pin assignment are the same with the main board for EPSON Stylus Color 200 Therefore refer to the service manual for EPSON Stylus Color 200 for the details ...

Page 40: ...justment data 4 n 10 unit 0 08sec 1 17H Reserved 00H 18H EEPROM Status 00H Used once initialized other Not used to be initialized 00H 19H THICK paper direction Auto LF Print direction Network I F mode Bit 7 Thick paper 0 Index card Portrait 1 Envelope Landscape Bit 3 Auto LF 0 OFF 1 ON Bit 2 Network I F mode 0 OFF 1 ON Bit 1 0 Print direction 0 0 Bi D 0 1 Uni D 1 1 Auto 82H 1AH Interface selection...

Page 41: ...counter K Black 1 count 1ng 00H 36 3BH Fired dot counter Y Yellow 1 count 1ng 00H 3C 41H Fired dot counter M Magenta 1 count 1ng 00H 42 47H Fired dot counter C Cyan 1 count 1ng 00H 48 6BH Reserved 00H 6C 6FH Head vacuuming time A 0 to FFFFFFFFH unit 10 min Start from 1992 01 01 00 00 01H 00H 00H 00H 70 73H 4 color head uninstallation time 0 to FFFFFFFFH unit 10 min Start from 1992 01 01 00 00 00H ...

Page 42: ...EPSON Stylus Color 300 Service Manual Rev A A 4 A 3 CIRCUIT DIAGRAM C224 MAIN BOARD ...

Page 43: ... Avenue 36 00 Millenia Tower Singapore 039192 Phone 065 33 77 911 Fax 065 33 41 185 EPSON HONG KONG LTD Rooms 4706 10 47 F China Resources Bldg 26 Harbour Road Wanchai Hong Kong Phone 2585 4300 Fax 2827 7083 EPSON TAIWAN TECHNOLOGY TRADING LTD 10F No 287 Nanking E Road Sec 3 Taipei Taiwan R O C Phone 02 717 7360 Fax 02 712 9164 EPSON ITALIA S p A V le F lli Casiraghi 427 20099 Sesto S Giovanni MI ...

Page 44: ...EPSON SEIKO EPSON CORPORATION ...

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