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UNIT REPAIR — C172 MAIN BOARD

This section is necessary only for servicers who repair to the component level. Servicers who
perform only board replacement (including all U.S. servicers) can ignore this section. The table
below lets you troubleshoot problems with the main controller board (C172 MAIN). This table
provides various symptoms, likely causes, and checkpoints. Checkpoints include waveforms,
resistances, and other values to be checked to evaluate the operation of each component.

Table 5-6. Repair of the C172 MAIN Board

Symptom

Condition

Cause

Checkpoint

Solution

The printer
does not move
at all.

Th e CPU
does not
operate.
(Drive system
does not
operate
normally
when turn
the printer on
and off.)

The reset circuit
does not operate.

Re place
IC8 or
IC9.

Selection of
control ROM is
abnormal.

Check the pin 2 of IC3 for a
change in the signal HIGH/LOW.

Rep lace
M AI N.
board

CG-ROM o r
RAM is defective.

Replace
CG-ROM
or RAM.

CPU is
defective.

Check the osillator signal at either
pin 27 or pin 28 of the CPU.

Rep lace
CPU or
M AI N.
b oar d

The carriage
does not
operate
normally.

The carriage
motor does
not operate
normally.

IC2 is defective.

Check the waveforms of IC15
pin 6 or 17.

Re place
IC2.

CPU is defective.

Rep lace
IC2 or
M AI N.
b o ar d

Check the waveform of the +5 V
line and that of the RESET signal.

Troubleshooting

5-12

EPSON Stylus 1500 Service Manual

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Summary of Contents for Stylus 1500

Page 1: ...EPSON AMERICA INC Stylus 1500 EPSON Service Manual TM STYLUS15 ...

Page 2: ...EPSON Stylus 1500 Service Manual Revision Date 1st Printing 1 25 96 ...

Page 3: ...ii EPSON Stylus 1500 Service Manual ...

Page 4: ...ital apparatus as set out in the radio interference regulations of the Canadian Department of Communications Le prsent appareil numrique n met pas de bruits radiolectriques dpassant les limites applicables aux appareils numriques de Classe B prescrites dans le rglement sur le brouillage radiolectrique dict par le Ministre des Communications du Canada COPYRIGHT NOTICE All rights reserved No part of...

Page 5: ...ower source until instructed to do so When the power supply cable must be connected use extreme caution in working on the power supply and other electronic components CAUTION 1 Repairs on EPSON products should be performed only by an EPSON certified repair technician 2 Make certain that the source voltage is the same as the rated voltage listed on the serial number rating plate If the EPSON produc...

Page 6: ... 328 4000 Fax 5 328 4001 Hot line 800 50 607 Epson Argentina S A Buenos Aires Argentina Tel 541 394 6774 Fax 541 322 4637 Epson Do Brasil São Paulo SP Brazil Tel 5511 813 3044 Fax 5511 210 9290 Epson Chile S A Santiago Chile Tel 562 232 8966 Fax 562 233 3197 Epson Venezuela S A Caracas Venezuela Tel 582 241 0433 Fax 582 241 6515 Epson Costa Rica S A San Jose Costa Rica Tel 506 234 6666 Fax 506 225...

Page 7: ...06 10 47th Floor China Resources Building 26 Harbour Road Wanchai Hong Kong Phone 852 585 4600 Fax 852 827 4346 Telex 65542 EPSCO H Epson Australia Pty Ltd 1170 Gibbes Street Chatswood 2067 N S W Australia Phone 61 2 415 9000 Fax 61 2 417 0077 Telex 71 75052 Epson Electronics Trading Ltd Taiwan Branch 10F No 287 Nanking E Road Sec 3 Taipei Taiwan R O C Phone 886 2 717 7360 Free phone 886 080 21117...

Page 8: ... Control Codes 1 14 OPERATIONS 1 15 Control Panel 1 15 Buttons 1 15 Indicators 1 16 Panel Functions at Power On 1 17 Printer Conditions and Status 1 18 Default Settings 1 19 Setting Method 1 19 Setting Menus 1 20 Printer Adjustment Mode 1 22 Printer Initialization 1 24 Monochrome Printing Mode 1 24 PAPER SPECIFICATIONS 1 25 Paper Type Specifications 1 25 Printable Area 1 28 Adjust Lever Position 1...

Page 9: ...nd Fonts 1 6 Table 1 4 Connector Pin Assignments and Signals Forward Channel 1 11 Table 1 5 Connector Pin Assignments and Signals Reverse Channel 1 13 Table 1 6 Panel Functions at Power On 1 17 Table 1 7 Indicator Status 1 18 Table 1 8 Default Settings 1 20 Table 1 9 Print Direction Mode Characteristics 1 21 Table 1 10 Printing Direction and ESC U Command 1 21 Table 1 11 Cut Sheet Specifications 1...

Page 10: ...t sheets using 14 lb 55 g m2 paper 10 envelopes 50 transparency sheets 70 sheets of special paper Built in push tractor Two built in interfaces Bidirectional parallel I F IEEE P1284 compatible Type B I F connector for optional interfaces Easy setup Multilingual messages five languages selected using the control panel No DIP switches Four scalable fonts five LQ fonts and one draft font installed Sc...

Page 11: ...020049 Color ink cartridge S041060 EPSON premium paper 360 dpi Letter S041066 EPSON premium paper 360 dpi Super A3 B S041062 EPSON premium paper 720 dpi Letter S041067 EPSON premium paper 720 dpi Legal S041069 EPSON premium paper 720 dpi Super A3 B S041070 EPSON premium paper 720 dpi B S041072 High quality glossy paper Letter S041074 High quality glossy paper Super A3 B S041075 High quality glossy...

Page 12: ...s LQ Speed Draft Speed 10 cpi pica 136 200 cps 400 cps 12 cpi elite 163 240 cps 480 cps 15 cpi 204 300 cps 600 cps 17 cpi pica condensed 233 343 cps 686 cps 20 cpi elite condensed 272 400 cps 800 cps Control codes ESC P2 and extended raster graphics codes EPSON remote commands IBM XL24E emulation Paper Feed Direction Monochrome Magenta Cyan Yellow 0 847 mm 12 360 2 3 1 4 5 6 7 64 60 63 59 58 57 61...

Page 13: ... in units of 2 points EPSON Sans Serif H 10 5 points 8 32 points in units of 2 points Note Each typeface has four variations normal bold italic and bold italic Table 1 3 Character Tables and Fonts Bitmap Fonts Scalable Fonts EPSON Roman EPSON Sans Serif EPSON Courier EPSON Prestige EPSON Script EPSON Roman EPSON Sans Serif EPSON Roman T EPSON Sans Serif H Italic PC437 U S Standard Europe PC850 Mul...

Page 14: ... 50 60 Hz Input frequency range 49 5 60 5 Hz Rated current 0 7 A Power consumption Approximately 23 W self test with 10 cpi LQ characters Insulation resistance 10 MΩ minimum 500 VDC between AC line and chassis Dielectric strength 1000 VAC RMS for 1 minute or 1200 VAC RMS for 1 second between AC line and chassis 220 V Version Rated voltage 220 240 VAC Input voltage range 198 264 VAC Rated frequency...

Page 15: ... G Non operating 1 0 50 G Notes 1 In shipment container 2 Without condensation Reliability Total print volume 75 000 pages letter Printhead life 1 000 million dots nozzle Safety Approvals 120 V Version Safety standards UL 1950 with D3 CSA 22 2 950 with D3 EMC FCC part 15 subpart B class B 220 240 V Version Safety standards EN 60950 TÜV SEMKO DEMKO NEMKO FIMKO EMC EN 55022 CISPR Pub 22 class B EN 5...

Page 16: ...er Voltage Directive 73 23 EEC EN60950 EMC Directive 89 336 EEC EN55022 Class B EN50082 1 IEC801 2 IEC801 3 IEC801 4 Acoustic Noise Noise level Approximately 45 dB A using ISO 7779 Printer Features EPSON Stylus 1500 Service Manual 1 9 ...

Page 17: ...See Figure 1 4 below When the input data buffer is full When the INIT signal is LOW or during hardware initialization During a printer error See the ERROR signal description below During self test printing In the default setting mode When the parallel interface is not selected The ERROR signal is LOW when the printer is in one of the following conditions Printer hardware error fatal error Paper ou...

Page 18: ...more data 11 BUSY 29 O When this signal is HIGH the printer cannot receive data 12 PE 28 O When this signal is HIGH the printer detects a paper out error 13 SLCT 28 O This signal is always HIGH when the printer is powered on 14 AFXT 30 I 15 NC Not connected 31 INIT 30 I The falling edge of a negative pulse or a LOW signal on this line initializes the printer A 50 µs minimum pulse is necessary 32 E...

Page 19: ...ibility request The printer responds affirmatively when the extensibility request values are 00H or 04H as follows 00H Request nibble mode reverse channel transfer 04H Request device ID Return data using nibble mode channel transfer Device ID The printer sends following device ID string when requested ESC P2 00H 36H MFG EPSON CMD ESCPL2 00 MDL Stylus 1500 CLS PRINTER XL24E 00H 37H MFG EPSON CMD PR...

Page 20: ...5 14 Host Busy 30 I Host busy signal 31 INIT 30 I Not used 32 Data Avail Data Bits 0 4 29 O Data available and reverse channel transfer data bit 0 or 4 36 1284 Active 30 I Active signal for IEEE P1284 mode 18 Logic H O Pulled up to 5 V via a 3 9 KΩ resistor 35 5 V O Pulled up to 5 V via a 3 3 KΩ resistor 17 Chassis GND Chassis ground 16 33 19 30 GND Signal ground 15 34 NC Not connected Note The I ...

Page 21: ...Printer Languages and Control Codes Printer languages and control codes ESC P2 IBM 24XL EPSON Remote Printer Features 1 14 EPSON Stylus 1500 Service Manual ...

Page 22: ... button alternates between printing and non printing states when there is data in the print buffer In the pause state printing stops but communication with the I F does not stop Therefore even in the pause state the printer receives data from the host until the input data buffer is full Pressing the Pause button while holding down the Alt button resets the printer Alt This button is usually used w...

Page 23: ...Out red Lights when there is no ink in the black ink cartridge and blinks when the cartridge is low Color Ink Out red Lights when there is no ink in the color ink cartridge and blinks when the cartridge is low Paper Out red Lights when the printer is out of paper and blinks when a paper jam occurs Pause orange Lights when printing is paused Economy green Lights when economy printing mode is select...

Page 24: ...int adjustment mode Load Eject Starts LQ mode self test printing LF FF Starts Draft mode self test printing Alt Pause Enters ink smudge prevention mode LF FF Load Eject Enters hex dump mode Alt Economy Condensed LF FF Pause Enters reset mode for the EEPROM and Timer IC for factory and service use only Notes 1 The sign means to press one button while holding down the other button s 2 The EEPROM and...

Page 25: ...On Courier 10 cpi Off Blink Courier 12 cpi On Off Roman T Proportional On On Sans Serif H Proportional On Blink Ink sequence Blink Ink cartridge change mode Blink Paper out On Paper jam Blink No ink cartridge or ink end black On Ink level low black Blink No ink cartridge or ink end color On Ink level low color Blink Release lever error Blink Blink Maintenance request Blink Blink Blink Blink Blink ...

Page 26: ...inter is turned off The last default value specified before power off is stored in the EEPROM END Change the settings YES NO Change setting menu Alt button Change setting value Pause button Turn printer power off to save settings to the EEPROM on the mainboard START Hold down the Economy Condensed button and turn on the printer The printer prints 1 Firmware version Protect counter value A C 2 How ...

Page 27: ...Italic U S A Italic France Italic German Italic U K Italic Denmark Italic Sweden Italic Italy Italic Spain 1 Auto line feed On Off Network I F mode Off Used in standalone environment On Used in network environment Zero slash 0 Ø with slash Page length for continuous paper 11 inches 12 inches 8 5 inches 70 6 inches Other 2 Skip over perforation On Off Auto tear off On Off Print mode 3 Plain paper p...

Page 28: ...ion depends on the printing direction Uni D Throughput is worse Print quality is better Throughput is worse Color quality is best Table 1 10 Printing Direction and ESC U Command Default Setting Mode Auto Bi D Uni D ESC U 0 ESC U 1 None ESC U 0 ESC U 1 None ESC U 0 ESC U 1 None Character mode for DOS Auto Auto Auto Bi D Uni D Bi D Uni D Uni D Uni D Raster graphics mode for Windows Bi D Uni D Auto B...

Page 29: ... the paper feed direction Perform these adjustments only when the color ink cartridge is installed in the printer Adjustment Method Use the following steps to perform the adjustments 1 Hold down the Pause button while turning on the power The printer enters adjustment mode Using this mode and pattern 1 are printed 2 Select the number of the most closely aligned columns by pressing the Alt button T...

Page 30: ...ads in the carriage movement direction at 200 cps Pattern 7 Head gap adjustment for black and color printheads in the paper feed direction at 360 dpi If the color cartridge is not installed pattern 4 is the final pattern and the rest of the adjustments pattern 5 6 and 7 are not executed ATTENTION No adjustment value specified is stored in the EEPROM until the printer is turned off The last adjustm...

Page 31: ...t panel settings are kept after software initialization Panel Initialization Panel initialization is performed when you press the Load Eject button while holding down the Alt button The following functions are executed The input data buffer is cleared The print buffer is cleared Default values are set Note The last panel settings are kept after panel initialization Monochrome Printing Mode This pr...

Page 32: ...2 portrait and US C portrait can be printed using manual insertion only Transparencies Table 1 12 Transparency Specifications Size Letter 8 5 215 9 mm 11 0 279 4 mm A4 210 mm 8 3 297 mm 11 7 Thickness 0 003 0 075 mm 0 0033 0 085 mm Notes 1 Printing on transparencies is supported only at normal temperatures 2 Use the designated side of the sheet to print on EPSON premium ink jet paper Envelopes Tab...

Page 33: ...ures Continuous Paper Table 1 16 Continuous Paper Specifications Size Width 4 101 6 mm 16 406 4 mm Folding length 8 7 220 mm 4 3 110 mm Thickness 0 0026 0 065 mm 0 0039 0 1 mm Weight 14 lb 52 g m2 22 lb 82 g m2 Labels Continuous Paper Table 1 17 Label Continuous Paper Specifications Size base paper Width 4 101 6 mm 16 406 4 mm Folding length 4 101 6 mm Size label Width 2 5 63 5 mm Folding length 0...

Page 34: ...ner Specifications Size Width 8 3 210 mm 17 432 mm Length 196 6 5 m or less Thickness 0 0031 0 08 mm 0 0039 0 1 mm Weight 17 lb 64 g m2 22 lb 82 g m2 Quality Plain paper Printer Features EPSON Stylus 1500 Service Manual 1 27 ...

Page 35: ...12 3 mm 0 20 5 mm 0 12 3 mm 0 54 14 mm B4 landscape 364 mm 14 3 0 63 16 mm 0 12 3 mm 0 12 3 mm 0 63 16 mm 0 12 3 mm 0 54 14 mm A3 landscape 420 mm 16 5 0 98 25 mm 0 51 13 mm 1 97 50 mm 2 44 62 mm 0 12 3 mm 0 54 14 mm Ledger landscape 432 mm 17 0 0 98 25 mm 0 98 25 mm 2 44 62 mm 2 44 62 mm 0 12 3 mm 0 54 14 mm Note The printable area for labels on a cut sheet is the same as that for a regular cut s...

Page 36: ...Left Margin minimum RM Right Margin minimum TM Top Margin minimum BM Bottom Margin minimum 0 12 3 mm 0 12 3 mm 0 12 3 mm 0 55 14 mm T M R M Printable area LM BM Figure 1 9 Printable Area for Envelopes Printer Features EPSON Stylus 1500 Service Manual 1 29 ...

Page 37: ...within the printing area More than 13 mm 0 51 More than 13 mm 0 51 More than 3 mm 0 12 More than 9 mm 0 35 More than 9 mm 0 35 More than 9 mm 0 35 More than 9 mm 0 35 More than 134 mm 5 28 Perforation Perforation Perforation More than 12 5 mm 0 49 More than 14 mm 0 55 Printable Area 2 Printable Area 1 Printable Area 1 Printable Area 1 Printable Area 1 Printable Area 1 Printable Area 1 Printable Ar...

Page 38: ... adjust lever to the proper position for the paper type The adjust lever is located at the left upper side of the printer cover Table 1 21 Adjust Lever Position Paper Type Lever Position Platen Gap Adjustment Value Cut sheets transparencies continuous paper labels Far side 0 Envelopes card stock Near side 0 7 mm 0 Figure 1 11 Adjust Lever Settings Printer Features EPSON Stylus 1500 Service Manual ...

Page 39: ...ach color Life 2 years from indicated production date Storage temperature 4 F to 104 F 20 C to 40 C Storage under a month at 104 F 40 C 86 F to 104 F 30 C to 40 C Packing storage under a month at 104 F 40 C 30 C 60 C 86 F 140 F Transit under 120 hours at 60 C 140 F and under a month at 104 F 40 C Dimensions 1 7 W x 2 2 D x 1 5 H 42 9 mm W 56 8 mm D 38 5 mm H Notes 1 The ink cartridge cannot be ref...

Page 40: ...nism M 4E60 Housing Main Control Board C172 MAIN Board This board consists of a CPU TMP95C061AF gate array E05B16 ROM CG PROM DRAM EEPROM motor driver ICs printhead driver circuits etc Common Drivers CG ROM DRAMs MROM Lithium Battery Reset ICs CR Motor Driver SLA7043M CPU Gate Array E05B16 PF Motor Driver UDN2917 Program ROM EEPROM Figure 1 12 C172 MAIN Board Component Layout Printer Features EPSO...

Page 41: ...tings for input AC voltages 120 VAC and 220 240 VAC The power switch is in the secondary circuit allowing the CPU to remain active 20 seconds minimum after the printer is turned off Fuse Switching FET Regulator IC Transformer Diode Bridge Figure 1 13 C172 PSB PSE Board Component Layout Printer Features 1 34 EPSON Stylus 1500 Service Manual ...

Page 42: ... Motor Driver Circuit 2 22 Printhead Driver Circuit 2 23 Black Printing 2 24 Color Printing 2 25 Normal Dot EPSON Micro Dot Printing Modes 2 26 INK SYSTEM MANAGEMENT 2 27 Ink Operations 2 27 Counters 2 28 List of Figures Figure 2 1 Black Printhead Structure 2 3 Figure 2 2 Color Printhead Structure 2 3 Figure 2 3 Printing Operation States 2 4 Figure 2 4 Printer Mechanism Block Diagram 2 5 Figure 2 ...

Page 43: ...ed Motor Driver Circuit Block Diagram 2 22 Figure 2 26 Printhead Driver Circuit Block Diagram 2 23 Figure 2 27 Normal Dot Data Transmission Timing 2 24 Figure 2 28 Color Upgrade Kit Connector Pin Alignment 2 25 Figure 2 29 Color Data Transmission Timing 2 25 Figure 2 30 EPSON Micro Dot Printing Driver Waveform 2 26 List of Tables Table 2 1 Carriage Motor Specifications 2 6 Table 2 2 Drive Terms Ca...

Page 44: ...hows the structure of the monochrome printhead which consists of the nozzle nozzle plate piezo elements cavities and printhead driver board Color Printhead The figure below shows the structure of the color printhead Its structure is different from the monochrome printhead The color printhead consists of the nozzle plates two rows of nozzles piezo elements and cavities for each of the three colors ...

Page 45: ...avity A thermistor is attached to the side of the black ink printhead driver board to monitor the temperature because the viscosity of the ink varies depending on the temperature The detected temperature level is fed back to the printhead driver voltage control circuit to change the time of the Tc pulse EPSON Micro Dot Printing Mode The Stylus 1500 has a special black ink printing mode called EPSO...

Page 46: ... the position of the carriage unit the paper feed motor torque is transmitted to the paper feed auto sheet feed push tractor feed or pump mechanisms via a disengage mechanism Carriage Unit Disengage Mechanism Paper Feed Mechanism Paper Feed Motor Carriage Motor Color Black Pump Unit Mechanism Auto Sheet Feeder Mechanism Push Tractor Mechanism Release Lever Figure 2 4 Printer Mechanism Block Diagra...

Page 47: ...er IC Table 2 1 Carriage Motor Specifications Item Description Motor type 4 phase 96 pole hybrid type stepping motor Drive voltage 42 VDC 5 Coil resistance 5 Ω 7 Drive frequency 480 9600 Hz Excitation mode Constant current unipolar drive Minimum step 0 026 mm at 2W1 2 phase 0 106 mm at 1 2 phase Table 2 2 Drive Terms Carriage Drive Mechanism Print Mode Print Speed cps Current Value A Phase Acceler...

Page 48: ...ge mechanism and gear train The torque is then separated for each of the two directions of the PF roller One direction of torque transmission is used to drive the paper ejecting mechanism via the gear train of the upper paper guide assembly The other direction is used to drive the push tractor or ASF mechanism Table 2 3 Paper Feed Motor Specifications Item Description Motor type 4 phase 96 pole HB...

Page 49: ...r does not transmit torque to the pickup roller shaft After picking up paper the planetary gear is released from the ASF mechanism The torque of the PF motor is then transmitted to the paper feed mechanism To Tractor To ASF ASF Transmission Gear PF Roller Paper Eject Roller Eject Roller Unit Pump Unit Release Gear Disengage Gear PF Motor PF Motor Pinion Gear Eject Paper Shaft Figure 2 6 Paper Feed...

Page 50: ...ase lever to friction feed mode and insert a sheet in the rear paper slot the printer switches to manual paper feed mode In this mode the printer can feed a single sheet from the rear paper slot even if there is paper in ASF This mode therefore allows use of normal paper in the ASF and special paper such as glossy or transparency paper recommended for single sheet feeding in the rear slot at the s...

Page 51: ...s the carriage guide shaft toward the front or rear The bushings have an eccentricity toward the center of the carriage guide shaft and the platen gap is changed from wide to narrow or vice versa Table 2 5 Platen Gap Adjust Lever Positions Paper Type Lever Position Platen Gap Adjustment Value Cut sheets Transparencies Card stock Continuous paper 0 0 mm Envelopes 0 7 mm Parallelism Adjust Bushing P...

Page 52: ...ain tank Wiping mechanism The figure below shows a diagram of the ink system Pump 1 Pump 2 PF Motor Disengage Gear Gear Train Clutch Unit Head Cleaner Color Ink Cartridge Option Black Ink Cartridge Air Valve Waste Ink Drain Tank Pump Unit Figure 2 10 Ink System Block Diagram Operating Principles EPSON Stylus 1500 Service Manual 2 11 ...

Page 53: ...on the rotational direction of the paper feed motor as shown in Table 2 6 Switching to the Pump Function Carriage Unit Switch Lever Release Cam Direction of Carriage Transfer Disengage Gear Compression Spring Direction of Release Cam Transfer Carriage Unit Switch Lever Disengage Mechanism Release Lever ASF Transmission Set Lever Release Cam Set Lever Release Cam Set Lever Disengage Mechanism Figur...

Page 54: ...Unit Switching Lever Release Cam Release Cam Lever Figure 2 13 Release Cam Reset Carriage Unit Switch Lever PF Motor PF Motor Pinion Gear Disengage Gear Pump Unit PF Roller Release Cam Figure 2 14 Paper Feed Mechanism Function Operating Principles EPSON Stylus 1500 Service Manual 2 13 ...

Page 55: ...ump Mechanism Operation PF Motor Rotational Direction Operation Clockwise CW forward rotation Black ink absorption Wiper reset Counterclockwise CCW backward rotation Color ink absorption Wiper set There are two pump rollers in the pump unit and drive power is supplied from the paper feed motor via the pump drive gear D E gear which is moved by the carriage In the pump unit the transmission gear su...

Page 56: ...n the paper feed drive motor rotates backward CCW power from the motor via the clutch unit and gears is transmitted to the head cleaner wiper drive gear The head cleaner moves across the carriage unit s path When the motor rotates forward CW the head cleaner moves toward the front to remove itself from the carriage unit s path Both the black and color printheads are cleaned by this wiper Color Car...

Page 57: ...y the C172 PSB board 120 VAC or by the C172 PSE board 220 240 VAC Both boards are identical in design and function except for the components in the primary circuit that accommodate the specified input voltage The input voltages and applications of output voltages are summarized in the table below Table 2 7 DC Voltage Distribution Voltage Application 42 VDC Motor drive carriage and paper feed Print...

Page 58: ...rrent is monitored by IC51 a 5 VDC generation switching control IC which also monitors the output voltage This information is input to the internal comparator causing the printer to cut the 5 VDC when voltage or current becomes abnormal 42 VDC Line Over voltage Protection Circuit The output level is monitored by two Zener diodes ZD52 and ZD87 If the voltage level exceeds 48 V photocoupler PC1 is a...

Page 59: ...timer IC IC10 counts each time the printer is cleaned and keeps track of how long the printer is not used thereby allowing the printer to be cleaned only when necessary CLK SD I O Data Bus DRAM IC17 Address Bus EEPROM IC11 93C46 Reset IC for Power IC8 M51955B NJU6355E Timer Counter IC10 IC9 PST592D To A To B TMP95C061AF IC1 CPU E05B16 IC2 CG ROM IC7 PROM 4M IC3 PROM IC4 CG ROM IC6 From A SED6100D0...

Page 60: ...following sensor circuits enable the C172 MAIN board to monitor printer mechanism status 42 V 5 V NMI P84 CPU IC1 5 V PST592D IC9 E05B16 IC2 RESET XRESET 201 30 1 6 10 15 M51955B IC8 3 2 Figure 2 21 Reset Circuit Block Diagram THS 13 5 V AN0 20 CN7 CPU IC1 1 2 1 2 3 1 0 9 2 5 45 P71 P70 HP 5 V CN10 CN9 P74 1 6 BHCO CN13 3 5 V CN12 5 V 1 P72 Rear PE Sensor 5 V CN11 4 5 V P E P E CN8 CHCO P77 9 1 3 ...

Page 61: ...chanism to determine whether the black ink supply is empty or low This sensor is used along with the black ink cartridge sensor signal as shown in the following illustration Thermistor A thermistor is attached to the black ink printhead driver board to monitor the temperature using thermistor resistance values approximately 10 KΩ at 77 F or 25 C The CPU changes the printhead drive signal s pulse w...

Page 62: ...e in micro step sequences a minimum of 1 720 inch The SLA7043M motor driver reads the 4 bit data using four clock counters from the E05B16 IC2 clock Each bit is read at the falling edge of these clock pulses As a result received serial data is placed in the shift register and then shifts the latch register When the strobe pulse becomes active from the E05B16 IC2 clock serial data is moved into the...

Page 63: ... motor phase PFAPH and PFBPH phase current PFA0 1 and PFB0 1 and current setting signals PFV and then sends the signals to the paper feed motor driver IC B A E05B12 IC2 UDN2917EB IC15 PF Motor PFA0 PFA1 PFB0 PFB1 PFAPH PFBPH PFV3 PFV2 PFV1 PFV0 VREF1 VREF2 44 25 83 84 88 87 85 86 PFV PF A PF_A PF B PF_B A B 6 3 18 21 I10 I11 I20 I21 PH1 PH2 2 1 23 24 43 26 VBB 92 91 90 89 5 V 42 V 22 Figure 2 25 P...

Page 64: ...ink printhead driver circuit is used to selectively drive the color ink printhead nozzles E05B16 IC2 BHV0 BHV5 BH1C1 0 BH2C1 0 BH1D BH2D 49 COM1 36 SED6100D U1 C N7 CN1 LAT CLK SI DOUT63 1 DOUT64 2 Row A Row B 55 COM1 3 CN 8 CN1 LAT CLK SI DO64 61 DO60 1 Magenta Cyan Yellow Not Connected SED5619D U1 NCHG BHLAT BHCLK BHSO XBALL NCHG 56 58 59 65 ID1 ID4 CHPWMO CH2C CH2D1 0 VHV VHVCTROL 82 CHLAT CHCL...

Page 65: ... Thd between the first and second common pulses in one dot Head Driver Circuit Gate array E05B16 IC2 converts print data into serial data and outputs it from port CHSO pin 39 to the color head driver circuit Head driver SED6100D then latches the head data when gate array E05B16 outputs the BHLAT signal and the latched data becomes 64 bit parallel data for the black head One bit corresponds to each...

Page 66: ...SO pin 56 to the black head driver circuit Head driver SED5619D then latches the head data when the E05B16 gate array outputs the CHLAT signal and the latched data becomes 60 bit parallel data for the color head One bit corresponds to each nozzle When data transfer and nozzle selection are complete gate array E05B16 outputs the color head charge pulse CH2C and discharge pulse CH2D1 0 to the common...

Page 67: ... Printing Mode the print dot is smaller This mode is useful for a larger graded representation and for preventing white banding Micro Dot mode can be used with EPSON s premium ink jet paper or with transparencies using the appropriate paper settings This mode can also be selected for printing on normal paper in super fine 720 dpi quality COM BHLAT BHSO BHCLK 1 64 BH1 2C BH1 2D NCHG VH Figure 2 30 ...

Page 68: ...ld down for more than 3 seconds the carriage then moves to the ink cartridge replacement position Cleaning Selection This operation cleans each nozzle to ensure that the nozzle fires and no dots are skipped during printing This operation is performed by pressing the cleaning button combinations Alt Load Eject or LF FF while the printer is paused Print Start This operation eliminates ink from the n...

Page 69: ... EEPROM reset function See page 1 20 Protect Counter B This counter sets a limit to prevent the user from frequent initial ink charging This counter is stored in the EEPROM as a flag and is reset only by the EEPROM reset function See page 1 20 Protect Counter C This counter is used to manage the amount of ink in the left ink drain pad in the paper eject unit If the counter value is equal to or exc...

Page 70: ...ve Unit Removal 3 27 Paper Pickup Roller Unit Removal 3 29 Paper Feed Roller Unit Removal 3 31 Middle Frame Unit Removal 3 32 Front Rear PE Sensor Removal 3 33 ROM Replacement 3 34 LIST OF FIGURES Figure 3 1 Disassembly Flowchart 3 6 Figure 3 2 Releasing the Tractor Hook 3 7 Figure 3 3 Removing the Control Panel 3 7 Figure 3 4 Removing the Upper Housing 3 8 Figure 3 5 Removing the Printer Mechanis...

Page 71: ...he Base Frame 3 26 Figure 3 24 Removing the Paper Eject Drive Unit 3 27 Figure 3 25 Attaching the Left Right Eject Paper Assembly 3 28 Figure 3 26 Removing the Paper Pickup Roller Unit 3 29 Figure 3 27 Engaging the Gears 3 30 Figure 3 28 Removing the Paper Feed Roller Unit 3 31 Figure 3 29 Removing the Middle Frame Unit 3 32 Figure 3 30 Removing the Front Rear PE Sensors 3 33 LIST OF TABLES Table ...

Page 72: ...e in contact with each other 2 Do not heat the battery or place it near fire 3 Do not solder any part of the battery Doing so may result in leakage of electrolyte from the battery burning or explosion The leakage may affect other devices close to the battery 4 Do not charge the battery An explosive gas may be generated inside the battery and cause burning or explosion 5 Do not dismantle the batter...

Page 73: ...pack the printer for transportation with the black ink cartridge removed Use only recommended tools for disassembling assembling or adjusting the printer Apply lubricants and adhesives as specified See Chapter 6 Make specified adjustments when you disassemble the printer See Chapter 4 Note After you reassemble the printer if the sliding cam is forward and the carriage lock is engaged the carriage ...

Page 74: ... B743800200 Standard screwdriver O E B743000100 Thickness gauge O E B776702201 Tweezers O E B741000100 Wrench M3 O Box driver 7 mm across O E B741700200 Torque wrench E B765106901 O Commercially available E EPSON exclusive Table 3 2 Equipment Required for Maintenance Description Specification Multimeter Oscilloscope 50 MHz Note An oscilloscope is required only for servicers who repair to the compo...

Page 75: ...10 Main Controller C172 MAIN Board Removal CR Motor Removal 3 13 PF Motor Removal 3 14 3 15 Release Sensor Removal Carriage Home Position Sensor Removal 3 15 DE Sensor Removal 3 16 Black Head Removal 3 17 Cartrdge Holder Unit Removal Carriage Unit Removal 3 21 3 22 3 24 3 25 Paper Eject Frame Unit Removal Pump Unit Removal 3 26 3 27 3 29 3 31 Base Frame Removal Paper Eject Drive Unit Frame Removal...

Page 76: ...ctor and mechanism and pull up at the rear end of tractor frame as shown in the figure below 4 Remove the control panel from the printer mechanism Release the tab by inserting a screwdriver into the hole in the upper housing as shown in the figure below Then disconnect the panel harness from the connector on the C172 MAIN board Tractor Unit Tweezers Tractor Unit Hook Figure 3 2 Releasing the Tract...

Page 77: ...ing from lower housing by lifting it upward CAUTION Hold the carriage unit in the capping position to prevent the head from drying up Ink Cartridge Cover Hooks for Lower Housing Rear Sheet Guide Tractor Unit Upper Housing Control Panel CBB 3x12 CBB 4x20 CBB 3x12 Knob Release Lever Lower Housing Printer Cover Figure 3 4 Removing the Upper Housing Disassembly and Assembly 3 8 EPSON Stylus 1500 Servi...

Page 78: ...gure below Always connect cables to the same color connectors CN10 and CN14 have the same color connectors but different cable lengths and the cable for CN10 does not reach CN14 REQUIRED ADJUSTMENTS When you replace the main board initialize EEPROM contents as follows 1 Reassemble the printer 2 Turn the printer on while holding down the Alt LF FF Economy Condensed and Pause buttons on the control ...

Page 79: ...d remove the shield cover REQUIRED ADJUSTMENTS When you replace the main board initialize EEPROM contents as follows 1 Reassemble the printer 2 Turn the printer on while holding down the Alt LF FF Economy Condensed and Pause buttons on the control panel When the EEPROM is initialized some default settings for example the Bi D setting head gap angle black color head gap head drive voltage settings ...

Page 80: ...CBP 3 x12 CN16 CN3 Upper Connector Cover CBS 3 x 12 CP 3 x 6 CBP 3 x12 Control Panel Cable Lower Housing C172 MAIN Board Shield Cover Figure 3 6 Removing the C172 MAIN Board Disassembly and Assembly EPSON Stylus 1500 Service Manual 3 11 ...

Page 81: ...ler board 4 Remove 4 CBP 3 12 screws securing the power supply unit to the lower housing then remove the power supply unit WARNING Because the power switch is located in the secondary side of C172 PSB PSE the primary side remains hot even if power is off Therefore disconnect the power cable from the AC inlet C172 PSB PSE CBP 3 x 12 CN1 CN2 Lower Housing Figure 3 7 Removing the Power Supply Unit Di...

Page 82: ...CR motor do not catch the cable for the DE sensor between the base frame and middle frame unit Never touch the white PF gears Handling them will cause damage or contamination that will affect print quality DISASSEMBLY ASSEMBLY POINT In using adhesive on the CR motor fan to attach the CR motor shaft place the shaft within 1 mm of the back of the fan and set the sink side of fan toward the outside S...

Page 83: ...oller board 3 Use a wrench to remove 2 M3 hexagon nuts securing the PF motor to the middle frame and then remove the PF motor CAUTION Never touch the white PF gears Handling them will cause damage or contamination that will affect print quality Hexagon Nut M3 PF Motor Middle Frame Unit Figure 3 10 Removing the PF Motor Disassembly and Assembly 3 14 EPSON Stylus 1500 Service Manual ...

Page 84: ...1 Remove the upper housing See page 3 7 2 Disconnect the cable from the connector on the sensor 3 Remove the sensor from the paper eject frame Insert tweezers to release the hooks securing the sensor to the paper eject frame Then pull the sensor off as shown in the figure below Release Sensor Tweezers Release Sensor Cable Hook for Sensor Figure 3 11 Removing the Release Sensor HP Sensor Tweezers P...

Page 85: ...m the sub select cam frame Insert tweezers to release the hooks securing the sensor to the sub select cam frame Then pull the sensor off as shown in the figure below Hook for DE Sensor Tweezers Sub Select Cam Frame DE Sensor DE Sensor Cable Figure 3 13 Removing the DE Sensor Disassembly and Assembly 3 16 EPSON Stylus 1500 Service Manual ...

Page 86: ...with the head flexible flat cable FFC by lifting it upward CAUTION Take measures to protect the printhead unit from static electricity because the driver IC is attached directly to the printhead unit Never touch the metallic surface of the nozzle cover for the printhead Handle it only by holding the edges of the printhead CB P2 3 x 6 CR Cover Damper Cover Tube Cover Ink Supply Tube O ring Nut Fast...

Page 87: ...e the black head cable YMC head cable and plate holding the tube to the base frame with a CBS 3 6 screw The torque for tightening the screw is 0 78 0 98 Nm 8 10 kg cm REQUIRED ADJUSTMENTS See Table 4 1 for the complete list of adjustments required after the black head is removed or disassembled DISASSEMBLY ASSEMBLY POINTS Move the carriage to the left end of printer manually and adjust the distanc...

Page 88: ...his information is required for printer adjustments described in Chapter 4 Nozzles Rank of Holding Time 2 Normal Dot Drive Voltage Micro Dot Drive Voltage Serial Number Black Head Figure 3 16 Data Found on the Black Head Disassembly and Assembly EPSON Stylus 1500 Service Manual 3 19 ...

Page 89: ... mechanism parameters to EEPROM data 1 Reassemble the printer 2 Turn the printer on while holding down Alt LL FF Economy Condensed and Pause buttons on the control panel When the EEPROM is initialized some default settings for example Bi D setting head gap angle black color head gap head drive voltage settings etc are lost So you need to adjust the printer See Chapter 4 If you find that the value ...

Page 90: ...th the ink supply tube CAUTION Only remove the ink supply tube when necessary If you need to disconnect it be sure to raise the end of the tube to prevent the ink from leaking out 4 Remove the nut fastening the ink tube and remove the tube from cartridge holder DISASSEMBLY ASSEMBLY POINTS When you attach the ink supply tube insert the nut used to fasten the tube first and then insert O ring into t...

Page 91: ...e CBS 3 6 screw securing the plate that holds the tube and head FFC to the base frame Then remove the tube along with the tube cover and head FFC from the base frame 5 Turn the PG adjust bushings in both directions to disengage them from left and right frames and then remove the carriage unit and the CR guide shaft 6 Remove the CR guide shaft from the carriage unit REQUIRED ADJUSTMENTS See Table 4...

Page 92: ...ing the edges of the printhead Never touch the white PF gears Handling them will cause damage or contamination that will affect print quality DISASSEMBLY ASSEMBLY POINT When you attach the timing belt to the carriage unit insert the timing belt with the teeth out from the carriage unit as shown in the figure below Timing Belt Carriage Unit Figure 3 20 Attaching the Timing Belt Disassembly and Asse...

Page 93: ... and the middle frame and then remove the paper eject frame unit CAUTION While removing the paper eject frame unit insert a clean and soft paper towel between printhead and the paper feed roller unit to protect the printhead nozzles CBS 3 x 6 Paper Eject Frame Unit Left Frame Right Frame Middle Frame Figure 3 21 Removing the Paper Eject Frame Unit Disassembly and Assembly 3 24 EPSON Stylus 1500 Se...

Page 94: ...the gear shaft CAUTION Keeping the head cleaner clean is extremely important to keep the ink eject system in the printhead working properly and it directly affects print quality Therefore handle the head cleaner very carefully and observe the following precautions Never touch the head cleaner with your bare hands When attaching the head cleaner to the pump unit place the rubber face of the head cl...

Page 95: ...r 5 Remove the tractor release cam from the paper feed roller unit 6 Remove the tractor release cam support from the left frame working it through the hole in the left frame 7 Remove 5 CBS 3 6 screws securing the base frame to the left frame right frame and middle frame Then remove the base frame by lifting it upward Base Frame E ring Plain Washer Compression Spring 1 95 g Spur Gear 46 mm Tractor ...

Page 96: ...r feed roller unit clockwise with the knob moving the trigger lever on the right end of paper feed roller to set the hopper assembly to the lowest position The trigger lever is shown in Figure 3 24 7 Remove the CBP 3 8 screw securing the paper eject drive unit to the left frame and then remove the paper eject drive unit Eject Paper Assembly Stopper Left Paper Eject Assembly Right Paper Eject Assem...

Page 97: ... to fit the cam cover assembly for the paper pickup roller unit and to fit the right paper eject assembly for the paper pickup roller unit Cam Cover Assembly Pickup Roller Unit Left Paper Eject Assembly Right Paper Eject Assembly Plain Washer Figure 3 25 Attaching the Left Right Paper Eject Assemblies Disassembly and Assembly 3 28 EPSON Stylus 1500 Service Manual ...

Page 98: ...eft end of the paper pickup roller unit 8 Disengage the left end of the paper pickup roller bushing securing it to the left frame 9 Disengage the connection between the spur gear and paper pickup gear and then remove the paper pickup roller unit by moving it to the left side CAUTION When disengaging the ASF transmission ratchet from the paper pickup roller unit remove the ratchet to prevent it fro...

Page 99: ...th are as shown CAUTION To preserve paper feed accuracy do not damage the surface of the gears and do not touch them with your bare hands Spur Gear 29 mm in the ASF Transmission Gear Set Paper Pickup Gear Figure 3 27 Engaging the Gears Disassembly and Assembly 3 30 EPSON Stylus 1500 Service Manual ...

Page 100: ...the E rings on the left bushing of the paper feed roller unit 10 Turn the left and right bushings to disengage the connection between the bushings and frame 11 Move the paper feed roller unit to the left and disengage the connection between the spur gear 24 mm and the ASF transmission ratchet and then remove the paper feed roller unit by pulling it upward CAUTION To preserve paper feed accuracy do...

Page 101: ...ng the middle frame to the paper pickup guide frame 8 Remove the middle frame unit by pulling it forward and then upward DISASSEMBLY ASSEMBLY POINT Assemble the middle frame unit so it fits the bottom frame completely CAUTION Do not place the cables between the sub frame and the bottom frame Never touch the white PF gears Handling them will cause damage or contamination that will affect print qual...

Page 102: ... paper guide assembly Release the hooks on both sides of the sensors by inserting a screwdriver between the sensors and the rear paper guide assembly as shown in the figure below Rear Paper Guide Assembly Rear PE Sensor Cable Front PE Sensor Cable Hooks Rear PE Sensor Cable Front PE Sensor Cable Figure 3 30 Removing the Front Rear PE Sensors Disassembly and Assembly EPSON Stylus 1500 Service Manua...

Page 103: ... 3 6 screw securing the ROM cover to the lower housing and then remove the cover 2 Replace the ROM CAUTION When replacing the ROM disconnect the AC cable from the AC inlet Disassembly and Assembly 3 34 EPSON Stylus 1500 Service Manual ...

Page 104: ...ck Head Angle Adjustment 4 11 Figure 4 6 Black Head Angle Adjustment Pattern 4 12 Figure 4 7 Black Head Angle Adjustment Flowchart 4 12 Figure 4 8 Color Head Angle Adjustment 4 14 Figure 4 9 Color Head Angle Adjustment Pattern 4 15 Figure 4 10 Color Head Angle Adjustment Flowchart 4 15 Figure 4 11 Uni D Adjustment Pattern 4 17 Figure 4 12 Bi D Adjustment Pattern 4 20 Figure 4 13 Bi D Adjustment Fl...

Page 105: ...Adjustments 4 2 EPSON Stylus 1500 Service Manual ...

Page 106: ...move the color ink cartridge always install a new cartridge immediately after removing the old one During adjustments use cartridges exclusively for service Color cartridge part number 1023207 Reset protect counter B using the adjustment program to make the printer perform the initial ink charge operation before sending the unit back to the customer Note After you reassemble the printer if the sli...

Page 107: ...a writing operation See page 4 9 3 Black head angle adjustment See page 4 11 4 Uni D alignment adjustment See page 4 17 5 Bi D alignment adjustment See page 4 19 6 Black color head vertical adjustment See page 4 22 7 Head gap adjustment See 4 25 After replacing or disassembling both black head and optional color head 1 Destination data writing operation See page 4 7 2 Head data writing operation S...

Page 108: ... of the lower paper guide assembly as shown in the figure Then move the carriage unit to the left side of the printable area CAUTION Only set the black printhead on the thickness gauge Never let the color printhead touch the gauge 3 Set the platen gap adjustment lever to 0 4 Adjust the platen gap using the table below The correct platen gap is 1 16 0 02 mm Table 4 2 Gap and Adjustment Direction Ga...

Page 109: ...he carriage unit to the right Move the carriage unit to the left Set the PG adjust lever to 0 Set the PG adjust lever to Is left PG OK END PG Adjustment OK NO Is left PG OK NO YES Is right PG OK NO YES Does a 1 14 mm gauge pass Widen PG Narrow PG YES YES NO NO Return to main flowchart Does a 1 18 mm gauge pass Figure 4 3 Platen Gap Adjustment Flowchart Adjustments 4 6 EPSON Stylus 1500 Service Man...

Page 110: ...own below Customer Data Printer Setting 3 Using Table 4 3 input the appropriate 8 digit ID number for the destination as the printer setting for Customer Data For example the U S market or EAI 20000A00 Then the main menu appears as shown on the next page Table 4 3 Customer Data Market or Destination ID Number Market or Destination ID Number Market or Destination ID Number Market or Destination ID ...

Page 111: ...estination interface mode TOF value economy condensed etc is stored to the EEPROM 5 Choose END by selecting it from the keyboard Choose another selection if you want to continue in the adjustment mode 6 The following menu appears on the display If you want end the program press 5 Stylus 1500 Customer Data 95 Customer Data Input 1 Adjustment 2 END 5 SELECT MENU CAUTION The settings are not stored p...

Page 112: ... Table 4 3 input the appropriate 8 digit ID number for the destination as the printer setting for Customer Data For example the U S market or EAI 20000A00 Then the main menu appears as shown below Stylus 1500 Customer Data 95 Menu 1 Menu 2 Head Data Writing Black Head Angle Adj END Uni D Adj Destination Data Writing only Bi D Adj Initial Ink Charging Color Head Angle Adj Black Color HV Adj Head Ga...

Page 113: ... Normal Dot n Micro Dot n Go ENTER Again SPACE n 8 Press ENTER to exit the menu or press SPACE to continue making settings CAUTION The values are not permanently stored in EEPROM until the printer is turned off Turn off the printer immediately after adjustment Reset protect counter B using the adjustment program to make the printer perform the initial ink charge operation before sending the unit b...

Page 114: ... the target printer via port LPT1 using a parallel interface cable and turn the printer on 2 Load GW BASIC and run the program ST1500 BAS Then the main menu appears as shown below Customer Data Printer Setting 3 Using Table 4 3 input the appropriate 8 digit ID number for the destination as the printer setting for Customer Data For example the U S market or EAI 20000A00 Then the main menu appears a...

Page 115: ...ing mode or press SPACE to continue entering settings 9 Fasten the 2 CBP P2 3 6 screws Figure 4 6 Black Head Angle Adjustment Pattern A START Choose Black Head Adj to enter the black head angle adjustment Print the adjustment pattern Is head angle OK To main menu What is the slant of the angle Move the lever 1 step forward Move the lever 1 step backward Push the CR cover H carriage holder toward t...

Page 116: ...nter B using the adjustment program to make the printer perform the initial ink charge operation before sending the unit back to the customer 10 The menu below appears on the display If you want end the program press 5 Stylus 1500 Customer Data 95 Customer Data Input 1 Adjustment 2 END 5 SELECT MENU 11 Turn off the printer Adjustments EPSON Stylus 1500 Service Manual 4 13 ...

Page 117: ... turn the printer on 2 Load GW BASIC and run the program ST1500 BAS The main menu appears as shown below Customer Data Printer Setting 3 Using Table 4 3 input the appropriate 8 digit ID number for the destination as the printer setting for Customer Data For example the U S market or EAI 20000A00 Then the main menu appears as shown below Stylus 1500 Customer Data 95 Menu 1 Menu 2 Head Data Writing ...

Page 118: ...ngle Magenta Cyan Cyan Magenta Yellow Figure 4 9 Color Head Angle Adjustment Pattern START Choose Color Head Angle Adj to adjust the color head angle Is the color head angle OK What does the pattern show Move the adjust lever 1 step to the front Move the adjust lever 1 step to the rear Is the color head angle OK Press ENTER key N O O K N O O K To main menu Press SPACE key Figure 4 10 Color Head An...

Page 119: ...or the color head angle Reset protect counter B using the adjustment program to make the printer perform the initial ink charge operation before sending the unit back to the customer 10 The following menu appears on the display If you want end the program press 5 Stylus 1500 Customer Data 95 Customer Data Input 1 Adjustment 2 END 5 SELECT MENU 11 Turn off the printer Adjustments 4 16 EPSON Stylus ...

Page 120: ...t LPT1 using a parallel interface cable and turn the printer on 2 Load GW BASIC on the PC and run the program ST1500 BAS Then the main menu appears as shown below Customer Data Printer Setting 3 Using Table 4 3 input the appropriate 8 digit ID number for the destination as the printer setting for Customer Data For example the U S market or EAI 20000A00 Then the main menu appears as shown below Sty...

Page 121: ... are not stored permanently in the EEPROM until the printer is turned off Turn off the printer at once after adjustment Reset protect counter B using the adjustment program to make the printer perform the initial ink charge operation before sending the unit back to the customer 8 The menu below appears on the display If you want end the program press 5 Stylus 1500 Customer Data 95 Customer Data In...

Page 122: ...nterface cable and turn the printer on 2 Load GW BASIC on the PC and run the program ST1500 BAS Then the main menu appears as shown below Customer Data Printer Setting 3 Using Table 4 3 input the appropriate 8 digit ID number for the destination as the printer setting for Customer Data For example the U S market or EAI 20000A00 Then the main menu appears as shown below Stylus 1500 Customer Data 95...

Page 123: ... C START Choose Bi D Adj to enter the Bi D adjustment mode Print Bi D pattern Is Bi D OK NO YES Misalignment direction Press up arrow key Press down arrow key Press ENTER key All speed OK NO YES Press ENTER key To main menu Select print speed Figure 4 13 Bi D Adjustment Flowchart Adjustments 4 20 EPSON Stylus 1500 Service Manual ...

Page 124: ...y after the adjustment Reset protect counter B using the adjustment program to make the printer perform the initial ink charge operation before sending the unit back to the customer 9 The menu below appears on the display If you want end the program press 5 Stylus 1500 Customer Data 95 Customer Data Input 1 Adjustment 2 END 5 SELECT MENU 10 Turn off the printer Adjustments EPSON Stylus 1500 Servic...

Page 125: ... on the PC and run the program ST1500 BAS The main menu appears Customer Data Printer Setting 3 Using Table 4 3 input the 8 digit ID number for the destination as the printer setting for Customer Data For example the U S market or EAI 20000A00 Then the menu below appears Stylus 1500 Customer Data 95 Menu 1 Menu 2 Head Data Writing Black Head Angle Adj END Uni D Adj Destination Data Writing only Bi...

Page 126: ...ing flowchart Black Magenta Figure 4 15 Black Color Head Vertical Adjustment E END START Choose Black Color HV to enter the black color head vertical adjustment The printer prints patterns from 0 to 6 Input the value of the nearest pattern 0 6 Press the ENTER key Is the adjustment OK NO Print the selected pattern OK Figure 4 16 Black Color Head Vertical Adjustment Flowchart Adjustments EPSON Stylu...

Page 127: ...ly after the adjustment Reset protect counter B using the adjustment program to make the printer perform the initial ink charge operation before sending the unit back to the customer 8 The menu below appears on the display If you want end the program press 5 Stylus 1500 Customer Data 95 Customer Data Input 1 Adjustment 2 END 5 SELECT MENU 9 Turn off the printer Adjustments 4 24 EPSON Stylus 1500 S...

Page 128: ...t ID number for the destination as the printer setting for Customer Data For example the U S market or EAI 20000A00 Then the main menu appears as shown below Stylus 1500 Customer Data 95 Menu 1 Menu 2 Head Data Writing Black Head Angle Adj END Uni D Adj Destination Data Writing only Bi D Adj Initial Ink Charging Color Head Angle Adj Black Color HV Adj Head Gap Adj Select Up or Down Go SPACE or ENT...

Page 129: ...make the printer perform the initial ink charge operation before sending the unit back to the customer 9 The menu below appears on the display To end the program press 5 Stylus 1500 Customer Data 95 Customer Data Input 1 Adjustment 2 END 5 SELECT MENU 10 Turn off the printer F START Choose Head Gap Adj to enter the head gap adjustment Select the resolution Is the head gap OK To main menu Which dir...

Page 130: ...r example the U S market or EAI 20000A00 Then the main menu appears as shown below Stylus 1500 Customer Data 95 Menu 1 Menu 2 Head Data Writing Black Head Angle Adj END Uni D Adj Destination Data Writing only Bi D Adj Initial Ink Charging Color Head Angle Adj Black Color HV Adj Head Gap Adj Select Up or Down Go SPACE or ENTER Change menu 1 or 2 4 Move the cursor to Initial Ink Charging to reset pr...

Page 131: ...NISM M 4E60 5 14 PUMP OPERATION TEST 5 17 LIST OF FIGURES Figure 5 1 Flowchart 1 5 6 Figure 5 2 Flowchart 2 5 7 Figure 5 3 Flowchart 3 5 8 Figure 5 4 Flowchart 4 5 9 Figure 5 5 Flowchart 5 5 10 Figure 5 6 Releasing the Carriage Lock 5 17 LIST OF TABLES Table 5 1 Motor Coil Resistance Test Points 5 3 Table 5 2 Sensor Status 5 3 Table 5 3 Error Codes 5 4 Table 5 4 Symptoms and Problems 5 5 Table 5 5...

Page 132: ...Troubleshooting 5 2 EPSON Stylus 1500 Service Manual ...

Page 133: ...Ω 10 At 25 C 77 F Table 5 2 Sensor Status Sensor Test Points Signal Level Status HP Sensor CN9 Pin 1 to 2 H 2 5 V In home position HP L GND Away from HP Front PE Sensor CN10 Pin 1 to 2 Open Paper present Closed No paper Paper end Rear PE Sensor CN11 Pin 1 to 2 Open Paper present Closed No paper Paper end Black Ink End Sensor CN12 Pin 1 to 2 Closed and Black ink cartridge sensor closed Ink present ...

Page 134: ... Blinks No Ink Cartridge Color On Install the new ink cartridge and press the Pause button Ink Level Low Color Blinks Release Lever Error Blinks Blinks Reset the release lever and eject installed paper Maintenance Request Blinks Blinks Blinks Blinks Blinks Blinks Blinks Blinks Blinks Blinks Service required Change the waste ink drain tank and reset the counter Fatal Error Blinks Blinks Turn off th...

Page 135: ... Flowchart No The printer does not operate at power on LEDs do not light up Printer mechanism does not operate 1 An error is detected Error is indicated by LEDs 2 A failure occurs during printing Printing is not performed Abnormal printing missing dots etc Print quality is poor 3 Printer does not feed the paper correctly No paper is fed Paper feed is irregular Paper jam occurs 4 Control panel oper...

Page 136: ...END Use the correct input voltage Replace the fuse and disconnect CN2 on the C172 PSB PSE board Replace the C172 PSB PSE board Does the fuse blow again at power on Check motors and drivers Refer to the section describing repair of the printer mechanism Replace any bad parts If a motor and driver are bad replace both at the same time YES NO YES NO YES NO YES NO YES NO Figure 5 1 Flowchart 1 Trouble...

Page 137: ... move smoothly Replace the ink cartridge with a new one Does the error occur again Check CR motor and drivers If they are OK replace the main board Refer to the section describing repair of the printer mechanism END Is the problem corrected END YES YES YES YES NO NO NO NO YES NO Check release and ink cartridge sensor and if bad replace Reset the release lever and check if paper is installed or not...

Page 138: ...m corrected Check all motors drivers and printhead for shorts If they are OK replace the main board See the section describing repair of the printer mechanism Is the problem corrected END END YES YES YES N O N O N O YES YES YES N O N O N O Perform the adjustments See Chapter 4 Check all motors drivers and printhead for shorts If they are OK replace the main board Fgiure 5 3 Flowchart 3 Troubleshoo...

Page 139: ... are no foreign objects that may interfere with paper movement Check the PF motor and drivers If OK replace the main board Is the problem corrected Is the problem corrected See the section describing repair of the printer mechanism END END YES YES NO NO YES YES NO NO Clean the paper feed rollers and path Is the problem corrected YES NO Fgiure 5 4 Flowchart 4 Troubleshooting EPSON Stylus 1500 Servi...

Page 140: ...el connected properly Connect the control panel correctly Replace the control panel Is the problem corrected Is the problem corrected Replace the main board END YES YES NO NO END YES NO Fgiure 5 5 Flowchart 5 Troubleshooting 5 10 EPSON Stylus 1500 Service Manual ...

Page 141: ... Table 5 5 Repair of the C172 PSB PSE The printer does not operate at all 42 V line is dead F1 is open Check whether F1 is normal or not Replace F1 Transformer T1 is open Check the coils for transformer using a multimeter Replace T1 Switching FET Q1 is dead Check the waveform at drain of Q1 Replace Q1 Q2 or Q3 is dead Check the waveform at corrector of Q2 or Q3 Replace Q2 or Q3 PC1 is dead Check t...

Page 142: ...printer does not move at all The CPU does not operate Drive system does not operate normally when turn the printer on and off The reset circuit does not operate Replace IC8 or IC9 Selection of control ROM is abnormal Check the pin 2 of IC3 for a change in the signal HIGH LOW Replace MAIN board CG ROM or RAM is defective Replace CG ROM or RAM CPU is defective Check the osillator signal at either pi...

Page 143: ...lf test printing is not executed IC2 is defective Check the output signal at pin 17 of CN7 black or pin 9 of CN8 color Replace IC2 or MAIN board Printhead is defective Replace printhead Paper feed does not operate normally PF motor does not rotate Check the signals from pin 1 2 or pin 23 24 of IC16 Replace IC2 or MAIN board IC2 is defective IC15 is defective Check the signals from pins 3 6 or pins...

Page 144: ...Insert the tube properly The ink tube is damaged Check the ink tube visually Replace the tube The cap is defective Check for any defective part Replace the head cap The pump is defective Replace the pump to see if this causes the ink to be absorbed normally Replace the pump unit The printhead is defective Replace the printhead to see if this causes the ink to be absorbed normally Replace the print...

Page 145: ... the head cable to see if operation is normal Replace the head cable The printhead is defective Replace the printhead to see if the printhead operates normally Replace the printhead Ink absorption is poor See Ink is not absorbed on the previous page Printer does not operate Pump may be broken Test pump using the procedure described on page 5 17 Replace pump Abnormal printing A particular dot is no...

Page 146: ...ttom of the carriage Install the timing belt properly A vertical line is not aligned Bidirectional alignment is not adjusted Check the printer with the bidirectional alignment program Adjust the bidirectional alignment Paper is not fed normally Character or dot pitch is abnormal Character or dot pitch is abnormal Check the head inclination distance and front rear position Make each adjustment Pape...

Page 147: ...ove the carriage to the center of the printer 6 Using a straw as an eye dropper place several drops of water on the sponge areas of both caps Use enough water to fill the sponge area but not overflow 7 Engage the cam as shown in Figure 4 1 8 Move the carriage back to home position 9 Remove the waste ink drain pad material 10 Reconnect the control panel 11 Reconnect the AC power cord 12 Power on th...

Page 148: ...leaning 6 4 LUBRICATION AND ADHESIVES 6 5 LIST OF FIGURES Figure 6 1 Lubrication Points and Adhesive Points 1 6 6 Figure 6 2 Lubrication Points and Adhesive Points 2 6 7 LIST OF TABLES Table 6 1 Recommended Lubricants 6 5 Table 6 2 Lubrication and Adhesive Points 6 5 EPSON Stylus 1500 Service Manual 6 1 ...

Page 149: ...Maintenance 6 2 EPSON Stylus 1500 Service Manual ...

Page 150: ...er CAUTION Do not use a hard or abrasive brush for cleaning Be careful not to damage printer components when using a vacuum cleaner A lithium battery is installed on the C172 MAIN board of this printer Be sure to observe the following instructions when servicing the printer or storing the after service parts 1 Keep the battery away from any metal or other batteries so that electrodes of opposite p...

Page 151: ...n Therefore to avoid wasting ink perform this printhead cleaning operation only if print quality declines 1 Turn the printer on and press the Pause button to pause the printer Make sure that the PAUSE LED is on 2 Hold down the Alt button and press the Load Eject button for black head cleaning Hold down the Alt button and press the Economy Condensed button for color head cleaning When the printer a...

Page 152: ... Point Lubricant 1 The shaft for the middle frame unit 3 points G 26 3 5 mg 2 The slope of select cam 2 points G 26 3 5 mg 3 Front paper guide unit the contact points for the pickup roller shaft eject paper roller and contact point of the shaft with gear 11 5 G 26 3 5 mg 4 The shaft for the eject paper roller unit G 26 3 5 mg 5 The contact surface of base frame with tractor release shaft 6 points ...

Page 153: ...6 6 6 6 2 2 1 1 1 3 3 3 4 5 5 5 5 5 5 7 Figure 6 1 Lubrication and Adhesive Points Maintenance 6 6 EPSON Stylus 1500 Service Manual ...

Page 154: ... 1 8 9 9 9 9 9 9 9 9 CR Motor CR Motor Fan Figure 6 2 Lubrication and Adhesive Points 2 Maintenance EPSON Stylus 1500 Service Manual 6 7 ...

Page 155: ...A 12 Stylus 1500 Exploded Diagram 3 A 23 LIST OF TABLES Table A 1 Connector Summary A 4 Table A 2 Connector Pin Assignments CN1 A 5 Table A 3 Connector Pin Assignments CN2 A 6 Table A 4 Connector Pin Assignments CN3 A 7 Table A 5 Connector Pin Assignments CN4 A 7 Table A 6 Connector Pin Assignments CN5 A 7 Table A 7 Connector Pin Assignments CN6 A 8 Table A 8 Connector Pin Assignments CN7 A 8 Tabl...

Page 156: ...Appendix A 2 EPSON Stylus 1500 Service Manual ...

Page 157: ...CN1 CN16 CN11 CN10 CN14 CN15 CN6 CN5 CN3 AC Inlet Parallel I F Type B I F Option C172 PSB PSE Carriage Unit C172 MAIN Printer Mechanism M 4E60 C172 PNL CR Motor PF Motor HP Sensor Front PE Sensor Rear PE Sensor Release Sensor DE Sensor Color Black Figure A 1 Interconnection of Major Components Appendix EPSON Stylus 1500 Service Manual A 3 ...

Page 158: ...nozzle selector and common driver CN8 17 Color head nozzle selector and common driver CN9 3 Carriage home position sensor CN10 2 Front paper end sensor CN11 2 Rear paper end sensor CN12 2 Black ink end sensor CN13 2 Black ink cartridge sensor CN14 2 Release sensor CN15 2 Disengage sensor CN16 5 5 V power supply from the power board Power ON signal PSC C172 PSB PSE CN1 2 AC inlet L N CN2 9 DC outpu...

Page 159: ...Y Busy signal 12 O PE Paper end signal 13 O SLCT Printer select signal 14 I AFXT AUTO LINE FEED signal 15 NC Not connected 16 GND Ground 17 FG Frame ground 18 5 V 5 VDC 19 30 GND Ground 31 I INIT INIT signal 32 O ERR ERROR signal 33 GND Ground 34 NC Not connected 35 5 V 5 VDC 36 I SLIN SELECT IN signal Appendix EPSON Stylus 1500 Service Manual A 5 ...

Page 160: ...rite ready 15 I RDREQ Read ready 16 O WR Write 17 O RD Read 18 O CS Chip select 19 24 GND Ground 25 O A3 Address bus bit 3 26 O A2 Address bus bit 2 27 O A1 Address bus bit 1 28 O A0 Address bus bit 0 29 I O D7 Data bus bit 7 30 I O D6 Data bus bit 6 31 I O D5 Data bus bit 5 32 I O D4 Data bus bit 4 33 I O D3 Data bus bit 3 34 I O D2 Data bus bit 2 35 I O D1 Data bus bit 1 36 I O D0 Data bus bit 0...

Page 161: ...0 LED 0 data 14 I PSW Power switch 15 I PSC Power scan 16 I SW3 Switch 3 input signal 17 I SW4 Switch 4 input signal 18 O LED3 LED 3 data 19 O LED2 LED 2 data 20 O LED4 LED 4 data Table A 5 Connector Pin Assignments CN4 Pin I O Name Description 1 4 GND Ground 2 3 42 V 42 V power supply Table A 6 Connector Pin Assignments CN5 Pin I O Name Description 1 O CR A Phase A drive signal 2 O CR B Phase B d...

Page 162: ...upply for black head driver 15 I CO Black cartridge out sensor 17 O SI Black head serial data output 19 O LAT Latch signal for black head 21 O CLK Clock signal for black head 22 FG Frame ground Table A 9 Connector Pin Assignments CN8 Pin I O Name Description 1 I ID3 ID 3 signal 2 I ID2 ID 2 signal 3 I ID1 ID 1 signal 4 5 COM Common voltage for printhead drive 6 7 10 12 14 GND Ground 8 I ID4 ID 4 s...

Page 163: ...CN11 Pin I O Name Description 1 4 I PE Rear paper in out detection signal 2 3 GND Ground Table A 13 Connector Pin Assignments CN12 Pin I O Name Description 1 I BKEND Black ink end detection signal 2 GND Ground Table A 14 Connector Pin Assignments CN13 Pin I O Name Description 1 I BHCO Black ink cartridge out detection signal 2 GND Ground Table A 15 Connector Pin Assignments CN14 Pin I O Name Descr...

Page 164: ...ription 1 I DE Disengage gear position detection signal 2 GND Ground Table A 17 Connector Pin Assignments CN16 Pin I O Name Description 1 5 5 V Power supply for logic system 2 4 GND Ground 3 I PSC Power scan signal Appendix A 10 EPSON Stylus 1500 Service Manual ...

Page 165: ...CIRCUIT DIAGRAMS Figure A 2 C172 MAIN Board Circuit Diagram 1 Appendix EPSON Stylus 1500 Service Manual A 11 ...

Page 166: ...Appendix A 12 EPSON Stylus 1500 Service Manual ...

Page 167: ...Figure A 3 C172 MAIN Board Circuit Diagram 2 Appendix EPSON Stylus 1500 Service Manual A 13 ...

Page 168: ...Appendix A 14 EPSON Stylus 1500 Service Manual ...

Page 169: ...725 R32 39K R13 4 7 K Q3 2PA1015 Y Q 2 C4408 R16 270 R15 510 10 9 C12 100U D 1 11EQS06 R56 150 50V C83 22U R55 39K R83 1K C56 10U 50V D83 1SS120 C Y51 DRA03TC ZD88 HZS5ALL R82 100 ZD87 HZS24 1L ZD52 HZS24 1L Q84 K1398 C84 3 30U 6 3V R86 1 00 R81 2K 0 5W R84 3 9K R85 470 K D86 11EQS06 Q 83 D TA115ES D85 1SS120 ZD89 HZS6A1L Q82 DTC114YS D82 1SS120 D84 1SS120 C55 0 1 U D52 10ELS2 D88 10ELS2 63V 8 6 2...

Page 170: ... 1 u Q31 K172 5 R32 39K R13 4 7K Q 3 2PA1015Y Q2 C4408 R16 2 70 R15 5 10 10 9 C 12 100U D1 11EQ S06 R56 150 50V C 83 22U R55 39K R83 1K C56 10U 50V D83 1SS120 C Y51 DRA03TC ZD88 HZS5AL L R82 100 ZD87 HZS24 1L ZD52 HZS24 1L Q 84 K139 8 C84 330U 6 3 V R86 100 R81 2K 0 5W R84 39K R85 470K D 86 11 EQ S06 Q 83 DTA115 ES D85 1SS120 ZD89 HZS6A1L Q 8 2 D TC114YS D 82 1SS120 D84 1SS120 C55 0 1U D88 10EL S2...

Page 171: ...D2 LED1 LED0 15 5 SW5 16 7 20 PSC PSW 2 4 1 3 SW6 SW0 SW1 SW2 SW5 SW4 SW3 Foreign LED0 LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8 LED9 SW0 SW1 SW2 SW3 SW4 ORANGE GREEN GREEN GREEN ORANGE RED RED RED GREEN GREEN MOUNTED MOUNTED MOUNTED MOUNTED MOUNTED SW5 MOUNTED SW6 MOUNTED Figure A 6 C172 PNL Board Circuit Diagram Appendix EPSON Stylus 1500 Service Manual A 17 ...

Page 172: ...Figure A 7 C172 MAIN Board Component Layout Appendix A 18 EPSON Stylus 1500 Service Manual ...

Page 173: ...CIRCUIT BOARD COMPONENT LAYOUTS Figure A 8 C172 PSB PSE Board Component Layout Appendix EPSON Stylus 1500 Service Manual A 19 ...

Page 174: ...Figure A 9 C172 PNL Board Component Layout Appendix A 20 EPSON Stylus 1500 Service Manual ...

Page 175: ...Figure A 10 Stylus 1500 Exploded Diagram 1 Appendix EPSON Stylus 1500 Service Manual A 21 ...

Page 176: ...EXPLODED DIAGRAMS Figure A 11 Stylus 1500 Exploded Diagram 2 Appendix A 22 EPSON Stylus 1500 Service Manual ...

Page 177: ...577 600 Figure A 12 Stylus 1500 Exploded Diagram 3 Appendix EPSON Stylus 1500 Service Manual A 23 ...

Page 178: ...Appendix A 24 EPSON Stylus 1500 Service Manual ...

Page 179: ...r Edge Guide EDGE GUIDE REAR RIGHT 122 Left Rear Edge Guide EDGE GUIDE REAR LEFT 123 Upper Connector Cover COVER CONNECTOR UPPER 124 Type B Interface Earth Spring EARTH SPRING TYPE B 125 Earth Spring EARTH SPRING 126 Waste Ink Pad 1 POROUS PAD INK EJECT 1 127 Waste Ink Pad 2 POROUS PAD INK EJECT 2 128 Waste Ink Pad 3 POROUS PAD INK EJECT 3 129 Waste Ink Pad 4 POROUS PAD INK EJECT 4 130 Ink Cartrid...

Page 180: ...PAD HEAD CABLE 513 CR Slider SLIDER CR 514 Head Grounding Plate GROUNDING PLATE HEAD 515 Sub Frame Assembly FRAME ASSY SUB 516 Printhead IJ64 0B0 PRINTHEAD IJ64 0B0 517 Compression Spring 18 4 COMPRESSION SPRING 18 4 518 Slider SLIDER 519 Head Cable Pad Holder HOLDER PAD HEAD CABLE 520 Head Fastening Lever Assembly LEVER ASSY FASTENING HEAD 521 Front Paper Guide Assembly PAPER GUIDE ASSY FRONT 522...

Page 181: ...Driven Roller Assembly B ROLLER ASSY DRIVEN B 555 Parallel Adjust Bushing BUSHING PARALLEL ADJUST 556 Switch Lever Bushing BUSHING LEVER SWITCH 557 Paper Eject Holder Assembly HOLDER ASSY PAPER EJECT 558 Paper Eject Holder Assembly B HOLDER ASSY PAPER EJECT B 559 Paper Eject Frame FRAME PAPER EJECT 560 Paper Eject Roller ROLLER PAPER EJECT 561 Right Paper Eject Assembly PAPER ASSY PAPER EJECT R 56...

Page 182: ... SCREW 587 Tube Fastening O Ring TUBE FASTENING O RING 588 Holder Assembly Pad HOLDER ASSY PAD 589 Cam Cover Assembly COVER ASSY CAM 590 Cam Select Assembly SELECT ASSY CAM 591 Tractor Assembly TRACTOR ASSY 592 Left Tractor TRACTOR LEFT 593 Right Tractor TRACTOR RIGHT 594 Paper Support PAPER SUPPORT 595 Tractor Drive Shaft SHAFT TRACTOR DRIVE 596 Tractor Guide Shaft SHAFT TRACTOR GUIDE 597 Left Tr...

Page 183: ...0 Release Transmission Lever LEVER RELEASE TRANSMISSION 631 ASF Release Shaft Bushing BUSHING SHAFT RELEASE ASF 632 ASF Release Cam CAM RELEASE ASF 633 ASF Transmission Ratchet RATCHET ASF TRANSMISSION 634 Clutch Cam CAM CLUTCH 635 Rotary Damper ROTARY DUMPER 636 Right Slide Cover COVER SLIDE RIGHT 637 Left Slide Cover COVER SLIDE LEFT 638 Panel Grounding Plate GROUNDING PLATE PANEL 639 Damper Ass...

Page 184: ...MPRESSION SPRING 0 47 672 Extension Spring 7 63 EXTENSION SPRING 7 63 673 Compression Spring 1 13 COMPRESSION SPRING 1 13 674 Compression Spring 2 16 COMPRESSION SPRING 2 16 675 Extension Spring 0 698 EXTENSION SPRING 0 698 676 Compression Spring 27 COMPRESSION SPRING 27 677 Plain Washer 6 0 7 12 PLAIN WASHER 6 0 7 12 678 Plain Washer 8 0 5 15 PLAIN WASHER 8 0 5 15 679 Plain Washer 8 1 0 2 7 8 PLA...

Page 185: ...6 700 Retaining Ring Type E 2 3 RETAINING RING TYPE E 2 3 701 Cup Screw M2 4 CUP SCREW M2 4 702 Bind S tight Screw M3 6 BIND S tight SCREW M3 6 703 Pan S tight Screw M3 6 PAN S tight SCREW M3 6 704 Bind P tight Screw M3 8 BIND P tight SCREW M3 8 705 Bind P tight Screw with Plain Washer 3 8 BIND P tight SCREW WITH PLAIN WASHER 3 8 706 Bind S tight Screw 2 6 BIND S tight SCREW 2 6 Appendix EPSON Sty...

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