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Epson Stylus COLOR 900 Service Manual

Color ink jet printer
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6(59,&(0$18$/
Color ink jet printer
EPSON Stylus COLOR 900/900N
®
TM-SC900/N

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  Summary of Contents for Epson Stylus COLOR 900

  • Page 1 6(59,&(0$18$/ Color ink jet printer EPSON Stylus COLOR 900/900N ® TM-SC900/N...
  • Page 2 PREFACE This manual describes basic functions, theory of electrical and mechanical operations, and maintenance and repair procedures of the EPSON Stylus COLOR 900 and EPSON Stylus COLOR 900N. The instructions and procedures included herein are intended for experienced repair technicians, and...
  • Page 3 While every precaution has been taken in the preparation of this book, Epson America, Inc., assumes no responsibility for errors and omissions. Neither Epson America, Inc., nor its affiliates shall be liable to the purchaser of this product or third parties for damages, losses, costs, or expenses incurred by purchaser or third parties as a result of: accident, misuse, or abuse of this product or unauthorized modifications, repairs, or alterations to this product.
  • Page 4 EPSON Stylus COLOR 900/900N FCC COMPLIANCE STATEMENT FOR AMERICAN USERS This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio and television reception.
  • Page 5 1. Repairs on EPSON products should be perfomed 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 product has a primary AC rating different from the available power source, do not connect it to the power source.
  • Page 6: Table Of Contents

    EPSON Stylus COLOR 900/900N Table of Contents Chapter 1 - Product Description Paper Jam ..............30 No Ink Cartridge ............30 Features ..............4 Maintenance Request........... 30 Specifications ............5 Fatal Errors..............30 Printing Specifications ............ 5 Printer Initialization ..........31 Options and Consumable Products........
  • Page 7 EPSON Stylus COLOR 900/900N Chapter 3 - Troubleshooting Checking and Clearing the Waste Ink Counter ..146 Fan Check ..............149 Overview .............. 65 Platen Gap (Parallelism) Adjustment ....150 Troubleshooting with LED Error Indicators....66 Adjusting the Platen Gap..........150 Checking for Power Supply Problems......
  • Page 8: Chapter 1 - Product Description

    & + $ 3 7 ( 5 PRODUCT DESCRIPTION...
  • Page 9: Features

    Chapter 1 Product Description 1.1 FEATURES The EPSON Stylus COLOR 900 and EPSON Stylus COLOR 900N are the latest in EPSON’s advanced lines of ink jet printers and offer the following features. High quality color printing: - 1440 (H) x 720 (V) dpi printing...
  • Page 10: Specifications

    EPSON Stylus COLOR 900/900N Chapter 1 Product Description 1.2 Specifications Control codes: ESC/P2 and expanded raster graphics code EPSON Remote command IBM X24E emulation 1.2.1 Printing Specifications Print method: On demand ink jet Nozzle configuration: Monochrome: 192 nozzles (96 x 2 staggered)
  • Page 11 EPSON Stylus COLOR 900/900N Chapter 1 Product Description Character tables: Legal and 14 international character sets Typefaces Standard version: (13 character tables) Bit map LQ fonts: EPSON Roman 10 cpi, 12 cpi, 15 cpi, proportional Italic PC 860 (Portuguese) EPSON Sans Serif...
  • Page 12 EPSON Stylus COLOR 900/900N Chapter 1 Product Description Table 1-3. Character Tables and Available Typefaces Character Tables Bit map font Scaleable font Italic table PC 437 (US Standard Europe) PC 860 (Portuguese) PC 850 (Multilingual) PC 861 (Icelandic) PC 863 (Canadian-French)
  • Page 13: Options And Consumable Products

    USB Interface Cable (shielded) from Series A 4-pin ∗ (computer) to Series B 4-pin (printer) (This cable is C83623 not supplied in all locations.) Table 1-5. Ink Cartridges for EPSON Stylus COLOR 900/900N Items Codes Black Ink Cartridge T003011 Color Ink Cartridge...
  • Page 14: Paper Specifications

    ) - 24 Ib (90g/m 12 Ib (45g/m ) - 20 Ib (75g/m Paper Types Quality Bond paper, Plain paper, EPSON special media Bond paper, Plain paper, Airmail 1.2.3.2 Transparencies, Glossy Paper NOTE: 1. Print envelopes at normal temperatures only.
  • Page 15 EPSON Stylus COLOR 900/900N Chapter 1 Product Description 1.2.3.4 Index Cards 1.2.3.7 Photo Stickers Size Size A6 card: Width 4.1” (105 mm) x Length 5.8” (148 mm) A6 (16 frames): Width 4.1” (105 mm) x Length 5.8” (148 mm) 10 x 8” card: Width 5.0” (127 mm) x Length 8.0” (203 mm)
  • Page 16: Printable Area

    EPSON Stylus COLOR 900/900N Chapter 1 Product Description 1.2.4 Printable Area Table 1-7. Minimum margin for Raster Graphics Mode / Character Mode Cut Sheets Paper Left Margin Right Margin Top Margin Bottom Margin See Figure 1-2 and Table 1-7 for the printable area of cut sheets.
  • Page 17 EPSON Stylus COLOR 900/900N Chapter 1 Product Description Envelopes See Table 1-8 and Figure 1-3 for the minimum margins and printable area for envelopes. Table 1-8. Minimum Margins for Envelopes Paper Left Margin Right Margin Top Margin Bottom Margin Size...
  • Page 18: Ink Cartridge Specifications

    EPSON Stylus COLOR 900/900N Chapter 1 Product Description 1.2.5 Ink Cartridge Specifications Dimensions 1.1” (W) x 2.6” (D) x 1.6” (H) The black and color ink cartridge specifications are described in the (28.9 mm x 67.4 mm x 41.8 mm) sections below.
  • Page 19 EPSON Stylus COLOR 900/900N Chapter 1 Product Description 1.2.5.2 Color Ink Cartridge Type Exclusive ink cartridge 2 . 1 i n ( 5 4 m m ) Color Magenta, Cyan, Yellow Print Capacity 530 pages, A4 at 360 dpi, 5 x duty each color...
  • Page 20: Electrical Specifications

    EPSON Stylus COLOR 900/900N Chapter 1 Product Description 1.2.6 Electrical Specifications Dielectric strength: 1500 VAC rms. 1 minute (between AC line and chassis) 120 V version 1.2.7 Environmental Conditions Rated voltage: 120 VAC Input voltage range: 99 ∼ 132 VAC Temperature Rated frequency range: 50 ∼...
  • Page 21: Reliability

    1.2.12 Physical Specifications 120 V Version Safety standard: UL1950 Weight CSA22.2 No.950 EPSON Stylus COLOR 900: 18.5 lb (8.4 kg) EMI: FCC part 15 subpart B class B EPSON Stylus COLOR 900N: 18.8 lb (8.5 kg) CSA C108.8 class B Dimensions 220∼240 V Version...
  • Page 22: Interface Specificatons

    The /ERROR signal is LOW when one of the following errors occurs: Printer hardware error (fatal error) The EPSON Stylus COLOR 900/900N is equipped with USB, a Paper Out error bi-directional 8-bit parallel interface, a serial interface and a card slot for an optional Type-B interface.
  • Page 23 EPSON Stylus COLOR 900/900N Chapter 1 Product Description The following tables show typical input and output signal levels for the Table 1-9. Data Transmission Timing interface (IEEE-1284 level 1 device). Signal levels are based on TTL Parameter Minimum Maximum standards.
  • Page 24 EPSON Stylus COLOR 900/900N Chapter 1 Product Description Table 1-13. Parallel I/F Forward Channel Return Pin No. Signal Name In/Out Functional Description GND Pin /STROBE The strobe pulse. Read-in of data is performed at the falling edge of this pulse.
  • Page 25: Parallel Interface (Reverse Channel)

    EPSON Stylus COLOR 900/900N Chapter 1 Product Description 1.3.2 Parallel Interface (Reverse Channel) When IEEE1284.4 is disabled; [00H] [5DH] Transmission mode: IEEE-1284 nibble mode MFG:EPSON; Adaptable connector: See the forward channel. CMD:ESCPL2,PRPXL,BDC; MDL:Stylus[SP]COLOR[SP[900; Synchronization: Refer to the IEEE-1284 specification CLS:PRINTER;...
  • Page 26 EPSON Stylus COLOR 900/900N Chapter 1 Product Description Table 1-14 shows pin assignments for the reverse channel. Table 1-14. Pin Assignment For Reverse Channel Return GND Pin No. Signal Name In/Out Functional Description HostClk Host clock signal. The DATA0 through DATA7 signals represent data bits 0 to7, respectively.
  • Page 27: Mac Serial Interface

    EPSON Stylus COLOR 900/900N Chapter 1 Product Description 1.3.3 Mac Serial Interface X-ON/X-OFF, DTR protocol: See Table 1-16. Standard: Based on RS-423 Table 1-16. X-On/X-Off and DTR Protocol Synchronization: Synchronous State Buffer Space X-ON/X-OFF Bit Rate: Approximately 1.8 Mbps Busy...
  • Page 28: Usb Interface

    Pin No. Description 1.3.7 Automatic Interface Selection Name Cable power, maximum power — The EPSON Stylus COLOR 900/900N has four types of interfaces: consumption is 100 mA USB, parallel, Macintosh serial, and optional Type-B. The EPSON -Data Bi-D Data Stylus COLOR 900N has a 10/100 Type-B Ethernet interface card.
  • Page 29 EPSON Stylus COLOR 900/900N Chapter 1 Product Description Interface State and Interface Selection 1.3.7.1 IEEE 1284.4 Protocol When an interface other than the parallel interface is selected, the The packet protocol described by the IEEE1284.4 standard allows a parallel interface goes into the BUSY state.
  • Page 30: Control Panel Operation

    1.4 Control Panel Operation 1.4.1 Indicators (LEDs) 1. Power The control panel of the EPSON Stylus COLOR 900/900N is composed Comes on when the power button is on, and AC power is supplied. of 2 non-locking buttons, 1 locking button, and 4 LEDs: 2.
  • Page 31: Panel Functions

    EPSON Stylus COLOR 900/900N Chapter 1 Product Description 1.4.2 Panel Functions Panel Functions Performed While Pressing the Power Button Table 1-19. Panel Functions with the Power On Panel Functions Performed During Normal Operation Button Function Table 1-18. Panel Functions Load/Eject Starts the status printout.
  • Page 32 EPSON Stylus COLOR 900/900N Chapter 1 Product Description Default Setting Mode Table 1-22. Default Setting Menu (continued) Some printer setting parameters can be changed by users and are referred to at the time of printer initialization. Follow these steps to...
  • Page 33 EPSON Stylus COLOR 900/900N Chapter 1 Product Description Printhead Alignment Mode 1.4.2.2 Special Setting Mode Follow these steps to align the printheads: While turning the printer on, press both the Load/Eject and Cleaning buttons to start the special setting mode. While the Paper Out LED is 1.
  • Page 34: Printer Condition And Panel Status

    EPSON Stylus COLOR 900/900N Chapter 1 Product Description 1.4.3 Printer Condition and Panel Status Table 1-24 shows various errors and also indicates printer status. Use it to diagnose printer problems and find appropriate solutions. Table 1-24. Printer Conditions and Panel Indicator Status...
  • Page 35: Error Status

    EPSON Stylus COLOR 900/900N Chapter 1 Product Description 1.5 Error Status 1.5.4 No Ink Cartridge When the printer detects that an ink cartridge is missing, it goes into the When any of the following errors occurs, the printer goes into error No ink cartridge error condition.
  • Page 36: Printer Initialization

    EPSON Stylus COLOR 900/900N Chapter 1 Product Description 1.6 Printer Initialization The EPSON Stylus COLOR 900/900N is equipped with three types of initialization methods. Power-on Initialization The printer is initialized when it is turned on or recognizes the cold-reset command (remote RS command). When the printer is...
  • Page 37: Chapter 2 - Operating Principles

    & + $ 3 7 ( 5 OPERATING PRINCIPLES...
  • Page 38: Overview

    Printhead paper feeding and lets the printer to achieve higher throughput. This EPSON Stylus COLOR 900/900N uses a new type of printhead that combines black and color nozzles in one unit. A total of 480 A solenoid-triggered, switchable transmission works with the...
  • Page 39: Printer Mechanism Operating Principles

    Chapter 2 Operating Principles 2.2 Printer Mechanism Operating Principles 2.2.1.2 Linear Encoder The EPSON Stylus COLOR 900/900N uses a linear encoder to obtain 2.2.1 Carriage Mechanism even carriage movement and accurate print timing. The linear encoder reads bands on the encoder belt, and IC2 interprets the signals from the The carriage mechanism includes several major components: encoder.
  • Page 40: Printhead Operation

    2.2.2 Printhead Operation The carriage unit is equipped with two sensors (micro switches) for The printhead of the EPSON Stylus COLOR 900/900N is not detecting the presence of the color and black ink cartridges. The printer compatible with any other printer. Its basic features and operation are cannot operate unless both cartridges are installed and the ink cartridge described below.
  • Page 41 EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles 2.2.2.2 Printhead Drive Control 2.2.2.3 Temperature Regulation The printhead includes one piezoelectric element (PZT) for each The printhead produces a large quantity of heat because it contains nozzle, or 480 in all. When the printer applies voltage to a PZT, the PZT...
  • Page 42: Pump/Asf Motor And Switching Mechanism

    EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles 2.2.3 Pump/ASF Motor and Switching Mechanism The pump/ASF switching mechanism switches the motor’s torque between the auto sheet feeder and the pump mechanism. The pump/ ASF motor supplies torque, and a solenoid is used as the switching trigger.
  • Page 43: Auto Sheet Feeder (Asf) Unit

    EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles The functions performed by the pump/ASF motor and switching 2.2.4 Auto Sheet Feeder (ASF) Unit mechanism depend on both the direction of motor rotation and whether The feed rollers in the ASF unit rotate in reverse before transporting the ASF or the pump transmission gear is engaged.
  • Page 44: Pump Mechanism

    EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles 2.2.5 Pump Mechanism As shown below, the pump mechanism includes two pressure rollers. Only one of them pumps ink at a time, depending on which direction the The pump mechanism includes the carriage lock and head cleaner ASF/pump motor is turning.
  • Page 45: Paper Feed Mechanism

    EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles 2.2.6 Paper Feed Mechanism The paper feed mechanism includes a paper end (PE) sensor, which checks the following: The paper feed mechanism handles paper feeding from printing through During paper loading, it checks if the leading edge of the paper paper ejection.
  • Page 46: Electrical Circuit Operation Principles

    (paper ejection and printhead capping). After a pre-determined length of time, the power supply shuts itself off. The EPSON Stylus Color 900/900N contains the following circuit boards: Figure 2-9, which provides a block-diagram schematic of the C265 main board power supply.
  • Page 47 EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles I n c o m i n g c u r r e n t p r o t e c t i o n S m o o t h i n g...
  • Page 48: C265 Pnl Board

    EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles 2.3.2 C265 PNL Board 2.3.3 C265 Relay Board The control panel board has three switches and four LEDs. The C265 relay board provides a convenient physical location for connecting and relaying signals from the following components to the...
  • Page 49: C265 Main Board

    Since the CPU runs at 24 MHz, it can send print data efficiently for high throughput. The C265 main board has two independent EPSON-designed ASICs: ASIC1 and ASIC2. ASIC1 controls all interfaces except for the USB I/F and sensors. ASIC2 controls the printhead, motors, linear encoder, and USB I/F.
  • Page 50 EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles ( I C 1 1 ) P F M o t o r d r i v e r I C 5 ( D - R A M ) I C 2 ( E 0 5 B 5 9 )
  • Page 51 EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles The figure below shows the C265 main board block diagram. P R O M D - R A M M - R A M C N 1 5 E 0 5 B 6 0...
  • Page 52 EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles The following tables list the major components of the C265 main board and their functions. Table 2-11. Major Components on the C265 Main Board (2/2) Table 2-10. Major Components on the C265 Main Board (1/2)
  • Page 53 EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles 2.3.4.1 Power-Off Timer/Reset Circuit The reset chip also includes an internal timer circuit (oscillator) to keep track of how long the printer has been off. This lets the printer determine The RTC9810 produces a reset signal by monitoring both the 5 VDC whether to perform a cleaning cycle at the next power-on, and, if so, line (input to pin 7) and 42 VDC line (input to pin 9).
  • Page 54 EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles 2.3.4.2 Sensor Circuits Temperature Feedback The printer’s sensors detect temperature and the mechanical status of The temperature feedback circuit includes three thermistors as well as the printer. The CPU receives the temperature feedback, while two...
  • Page 55 EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles AN7 (Pin 112) TH1 is located on the main board and monitors the temperature of the two pre-driver ICs (the head driver ICs: IC15 and IC16). These pre-driver ICs produce the high-frequency trapezoidal waveform that drives the printhead.
  • Page 56 EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles Mechanical Feedback The block diagram below shows the support circuity for the sensors that detect the status of the printer’s mechanical functions. C N 8 E N C B L S 1...
  • Page 57 Power Control Signal: based on the change in output signals from this sensor. The power supply of the EPSON Stylus COLOR 900/900N is not controlled by a primary line switch. Instead, the power switch on the If the printer is jarred during printing, the sensor may fail to read the control panel sends a signal to the ASIC E05B60 (IC3) on the C265 encoder strip properly.
  • Page 58: Cr Motor Driver Circuit

    EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles 2.3.5 CR Motor Driver Circuit Table 2-12. CR Motor Excitation Modes Excitation mode Usage Minimum step The CR motor drive IC (LB1847: IC12) enables 4W1-2 phase excitation. 2-2 phase drive LQ print mode 1/120"...
  • Page 59: Pf Motor Driver Circuit

    EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles 2.3.6 PF Motor Driver Circuit Table 2-13. PF Motor Excitation Modes Excitation mode Usage Minimum step The PF motor drive IC (LB1847: IC11) enables 4W1-2 phase excitation. 2-2 phase drive Not used 1/720"(0.035 mm)
  • Page 60: Pump/Asf Motor Driver Circuit

    EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles 2.3.7 Pump/ASF Motor Driver Circuit The pump/ASF motor driver IC A3957 (IC13, IC14) enables the pump/ASF motor to perform 4W1-2 phase excitation. Figure 2-19 shows the pump/ASF motor driver circuit block diagram. Note that IC13 drives phase A and IC14 drives Phase B.
  • Page 61: Printhead Driver Circuit

    EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles Table 2-14 shows the excitation modes used for the pump/ASF motor. 2.3.8 Printhead Driver Circuit Table 2-14. Pump/ASF Motor Excitation Modes The printhead driver circuit consists of two circuits: the common voltage...
  • Page 62 EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles Figure 2-20. Printhead Driver Circuit Block Diagram...
  • Page 63: Cooling Fan Driver Circuit

    EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles 2.3.9 Cooling Fan Driver Circuit IC1 processes the temperature detected by the thermistors every two seconds, even while the printer is idle, and IC2 outputs a cooling fan The cooling fan keeps the temperature of the printhead driver driver signal as shown in the table below: transistors within their normal operating range.
  • Page 64 Ink Out error even after you install new ink cartridges. The error occurs because the printhead’s nozzle selector ICs are manufactured by two different vendors, Sharp and EPSON. Their R e t u r n t o t h e S t a r t .
  • Page 65: Asf Solenoid Driver Circuit

    EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles 2.3.10 ASF Solenoid Driver Circuit The solenoid’s specifcations are included below: Table 2-18. ASF Solenoid Specifications A solenoid switches the planetary gear train between the ASF and the pumping mechanism. The figure below shows the solenoid driver circuit...
  • Page 66: Eeprom Control Driver Circuit

    EPSON Stylus COLOR 900/900N Chapter 2 Operating Principles 2.3.11 EEPROM Control Driver Circuit Data for various factory-adjustment items is stored in the EEPROM (IC7) on the C265 main board. The size of the EEPROM is 2 K bit. When the printer is turned on, data stored in the EEPROM is transferred to the D-RAM by the ASIC (IC3).
  • Page 67: Chapter 3 - Troubleshooting

    & + $ 3 7 ( 5 TROUBLESHOOTING...
  • Page 68: Overview

    (faint white lines), see “Print Quality Troubleshooting” on page 83. NOTE: The EPSON Stylus COLOR 900N includes an Ethernet interface card for network compatibility. If the printer fails to communicate across a network, replace the card.
  • Page 69: Troubleshooting With Led Error Indicators

    EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting 3.1.1 Troubleshooting with LED Error Indicators After identifying the type of error indicated by the LEDs, see the table below for a list of possible causes. Then follow the links in the table for Identify the type of error using the table below.
  • Page 70 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting Table 3-3. Error Conditions and the Possible Causes (continued) 3.1.1.1 Remedies for Paper Out Error Error Condition Possible Causes Check for problems in the order listed below to troubleshoot the Paper 1. The counter is not showing the actual remaining ink...
  • Page 71 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting Table 3-4. Remedies for Paper Out Error Table 3-5. Remedies for Paper Out Error (continued) Step Problem Solution Step Problem Solution Does paper not Set a cleaning sheet in the ASF with the non-adhesive...
  • Page 72 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting 3.1.1.2 Remedies for the Paper Jam Error Table 3-6. Remedies for Paper Jam Error Step Problem Solution Check for problems in the order listed below to troubleshoot the Paper Is the paper length...
  • Page 73 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting Table 3-7. Remedies for Paper Jam Error (continued) Table 3-8. Remedies for Paper Jam Error (continued) Step Problem Solution Step Problem Solution “Auto Sheet Feeder (ASF) Unit • Does the PE sensor • Check with...
  • Page 74 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting 3.1.1.3 Remedies for the Ink Low or Ink Out Error Table 3-9. Remedies for Ink Out Error Step Problem Solution Check for problems in the order listed below when the black or color...
  • Page 75 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting Table 3-10. Remedies for Ink Out Error (continued) Table 3-11. Remedies for Ink Out Error (continued) Step Problem Solution Step Problem Solution Is the micro switch If the micro switch is not properly attached, the...
  • Page 76 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting 3.1.1.4 Remedies for the Maintenance Error When the printer displays the Maintenance Error, the waste ink pads are full of ink. Replace the waste ink pads with new ones by following the steps in “Upper Case and Control Panel Removal”...
  • Page 77 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting 3.1.1.5 Remedies for a Fatal Error Table 3-13. Remedies for a Fatal Error Step Problem Solution Fatal errors can be caused by defective motors and non-responsive Has the ASF sensor Referring to the figure below, check that the ASF sensors.
  • Page 78 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting Table 3-14. Remedies for a Fatal Error (continued) Table 3-15. Remedies for a Fatal Error (continued) Step Problem Solution Step Problem Solution Is the latch in the Check if the latch Is the CRHP sensor...
  • Page 79: Checking For Power Supply Problems

    EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting 3.1.2 Checking for Power Supply Problems Check for problems in the order listed below if the printer does not come Table 3-17. on after you plug it in and press the power button (the printer does not Isolating the Problem on the Power Supply Board (continued) perform initialization and no LED indicators come on).
  • Page 80 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting Table 3-18. Table 3-19. Isolating the Problem on the Power Supply Board (continued) Isolating the Problem on the Power Supply Board (continued) Step Problem Solution Step Problem Solution Is the main switching Check the electrical continuity of the switching...
  • Page 81: Checking For Other Hardware Problems

    EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting 3.1.3 Checking for Other Hardware Problems Refer to this section only if you could not solve the problem in Section Table 3-21. Cooling Fan Does Not Run 3.1.1 Section 3.1.2. Use this section if:...
  • Page 82 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting Table 3-22. CR Motor Does Not Work Table 3-23. PF Motor Does Not Work Problem Solution Problem Solution Is the CR motor The connector for the CR motor is indicated in the figure below.
  • Page 83 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting Table 3-24. Pump/ASF Motor Does Not Work Table 3-25. Pump/ASF Motor Does Not Work (continued) Problem Solution Problem Solution Is the pump/ASF The connector used to control the Pump/ASF motor [Continued from The output waveforms should be as shown below. If motor defective? Is is indicated in the figure below.
  • Page 84 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting Table 3-26. ASF Solenoid Does Not Operate Table 3-27. ASF Solenoid Does Not Operate (continued) Step Problem Solution Step Problem Solution Is fuse F4 Place the meter’s probes on both terminals of the chip...
  • Page 85 Table 5-1 on page 119. This sequence is unique to the EPSON Stylus COLOR 900/900N and must be followed Press the Load/Eject button for three seconds. The printer enters exactly, or the printer may display the Ink Out error even after you install the ink cartridge replacement sequence and the carriage moves to the black ink cartridge replacement position.
  • Page 86: Print Quality Troubleshooting

    As many as seven or eight cleaning cycles may be If you notice that vertical lines are misaligned or that vertical needed. (Unlike previous models, the EPSON Stylus COLOR 900/900N is not equipped with the banding appears, perform the bi-directional adjustment as CL3 or “dummy cleaning” sequence. Therefore, described in “Bi-Directional Adjustment”...
  • Page 87 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting Table 3-30. Cleaning Does Not Solve the Print Problem (continued) Table 3-31. Cleaning Does Not Solve the Print Problem (continued) Step Problem Solution Step Problem Solution Is any dirt or foreign Release the carriage lock at the back of the...
  • Page 88 EPSON Stylus COLOR 900/900N Chapter 3 Troubleshooting Table 3-32. Cleaning Does Not Solve the Print Problem (continued) Table 3-33. Cleaning Does Not Solve the Print Problem (continued) Step Problem Solution Step Problem Solution Is a head driver Locate the following four power transistors attached to...
  • Page 89: Chapter 4 - Disassembly

    & + $ 3 7 ( 5 DISASSEMBLY AND ASSEMBLY...
  • Page 90: Overview

    W A R N I N G assembling the printer. This chapter describes procedures for disassembling the main components of the EPSON Stylus Color 900/900N. Unless otherwise Wear protective goggles to protect your eyes from ink specified, disassembly units can be reassembled by reversing the and flying parts.
  • Page 91 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly C A U T I O N Danger of explosion if the battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to government laws and regulations.
  • Page 92: Disassembly Procedures

    EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2 Disassembly Procedures For efficient disassembly, remove printer components in the order shown in the flowchart below. START Upper Case Page 91 W iring Harness Printhead CR Motor CR HP Sensor...
  • Page 93 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly C A U T I O N When you remove or replace certain parts, you must Table 4-1. make the required adjustments. Perform all Adjustments You Must Make After Repairing the Printer...
  • Page 94: Upper Case And Control Panel Removal

    EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.1 Upper Case and Control Panel Removal 4. Remove the screw on the left that secures the front case to the printer mechanism, and then pull the front case forward and remove 1.
  • Page 95: Disconnecting The Main Wiring Harnesses

    EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.2 Disconnecting the Main Wiring Harnesses Control Panel 1. Remove the upper case. (See page 91.) 2. Remove the three screws securing the shield plate bracket to the right side of the printer, and then remove the bracket.
  • Page 96: Printer Mechanism Removal

    EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4. Unlock the remaining cable clip (it secures the control panel FFC), 4.2.3 Printer Mechanism Removal and then disconnect the following connectors from the relay board 1. Disconnect the main wiring harnesses. (See page 92.)
  • Page 97: C265 Main Board Unit Removal

    EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.4 C265 Main Board Unit Removal 4. Locate the two cables that connect the main board to the power supply board. Disconnect the cables from their two connectors, CN2 1. Disconnect the main wiring harnesses. (See page 92.)
  • Page 98: Relay Board And Cooling Fan Removal

    EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.5 Relay Board and Cooling Fan Removal 1. Remove the main board. (See page 94.) Screws securing the Relay Board 2. Remove all connectors from the relay board. (See Figure 4-5...
  • Page 99: Removing The Shield Plate On The Main Board

    EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.6 Removing the Shield Plate on the Main Board 4. Disconnect the FFC from connector CN15 on the C265 Main board. 1. Remove the C265 Main board. (See page 94.) 5. Remove the two screws securing the shield plate (top) to the bottom frame, and remove the shield plate (top).
  • Page 100: Power Supply Board Removal

    EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.7 Power Supply Board Removal 4. Remove the two screws securing the shield plate to the power supply board, and then remove the shield plate. 1. Remove the printer mechanism. (See page 92.)
  • Page 101: Printer Mechanism Disassembly

    EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.8 Printer Mechanism Disassembly Screws securing the Head Fixing Lever 4.2.8.1 Printhead Removal Hinges C A U T I O N Before removing the printhead, move the carriage unit Cartridge Clamp FFC Holder all the way to the left end of the printer mechanism.
  • Page 102 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 9. Remove the two actuators for the ink cartridge sensors. (Note that 11. Lift up the printhead unit, and then disconnect the two FFCs and the the black one is for the black cartridge and the white one is for the connector (green, 4-pin) for the ink cartridge sensors.
  • Page 103 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.8.2 Carriage (CR) Motor Removal C A U T I O N If you replace the CR Motor, perform any necessary 1. Remove the upper case. (See page 91.) adjustments. (See...
  • Page 104 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.8.3 Paper Feed (PF) Motor Removal Do not reuse the PF roller drive gear after you remove C A U T I O N 1. Remove the printer mechanism. (See page 92.)
  • Page 105 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.8.4 Pump/ASF Motor and Solenoid Removal Screws securing the Switching Mechanism Frame 1. Remove either the printer mechanism (see page 92) or the main to the Printer Mechanism board unit (see page 94).
  • Page 106 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.8.5 Auto Sheet Feeder (ASF) Unit Removal 4. Slide the ASF unit toward the left side of the printer to remove the ASF drive gear. Then raise the paper support lever and, while 1.
  • Page 107 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4. Slide the shaft to the left as far as it goes. C H E C K During assembly, you must orient both hopper release 5. Remove the detection wheel by releasing the tab that secures it to P O I N T cams so their notches face left as shown below.
  • Page 108 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 8. Disengage the hopper assembly from the two pins on which it’s 4.2.8.7 Disassembling the Feed Rollers hinged at the top of the ASF frame, as shown below. 1. Disassemble the ASF unit. (See page 103.)
  • Page 109 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4. Release the four hooks securing the roller to the frame, and then remove the roller. C H E C K During assembly, secure compression spring P O I N T 1.66 to the hooks inside the roller frame as...
  • Page 110 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly C H E C K C H E C K When installing the roller assemblies, note that Make sure the left edge of the roller assembly P O I N T...
  • Page 111 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.8.8 ASF Sensor Removal 3. Remove the E-clip located just to the inside of the left hopper release cam, as shown below. 1. Remove the ASF unit. (See page 103.) 2. Remove the right hopper release cam.
  • Page 112 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 6. Disconnect the connector from the ASF sensor. 4.2.8.9 Carriage Home Position (CRHP) Sensor Removal 1. Remove the upper case. (See page 91.) 7. Insert a small flathead screwdriver into one of the spaces indicated by the arrows below, and then move the handle of the screwdriver 2.
  • Page 113 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.8.10 Encoder Belt Removal C H E C K After installing the encoder belt, view the carriage unit 1. Remove the upper case. (See page 91.) P O I N T from the side to make sure the belt passes through the 2.
  • Page 114 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.8.11 Carriage Unit Removal 6. Remove the spring from the platen gap (PG) adjust lever, shown below. 1. Remove the printer mechanism. (See page 92.) PG Adjust Lever 2. Remove the encoder belt. (See page 110.)
  • Page 115 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 9. Remove the screw fixing the right parallelism adjustment bushing. 4.2.8.12 Pump Unit Removal 1. Remove the two screws securing the waste ink drain pad cover to 10. Rotate the right parallelism adjustment bushing forward to align it the lower case, and then remove the drain pad cover.
  • Page 116 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.8.13 Paper Eject Frame Removal 4.2.8.14 Paper Eject Roller Removal 1. Remove the carriage unit. (See page 111.) 1. Remove the paper eject frame. (See page 113.) 2. Remove the pump unit. (See page 112.)
  • Page 117 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.8.15 Platen Removal 1. Remove the paper eject roller. (See page 113.) 2. Lift the platen up by its front edge, slide it to the left to free its right end, and then lift it up and out.
  • Page 118 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.8.16 Top Frame Removal 5. Remove all the pinch rollers by sliding them out toward the front of the printer. 1. Remove the ASF unit. (See page 103.) C A U T I O N When installing the rightmost pinch roller, you must 2.
  • Page 119 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 7. Remove the three screws securing the top frame (two in the front 4.2.8.17 Paper End (PE) Sensor Removal and one in the rear as shown in the figures below), and then remove 1.
  • Page 120 EPSON Stylus COLOR 900/900N Chapter 4 Disassembly and Assembly 4.2.8.18 Paper Feed (PF) Roller Removal 1. Remove the top frame. (See page 115.) 2. Raise the locking tab on the left bushing upward to release the PF roller, then shift the whole shaft to the left and remove the PF roller together with the rear paper guide.
  • Page 121: Chapter 5 - Adjustments

    & + $ 3 7 ( 5 ADJUSTMENTS...
  • Page 122: Overview

    Table 5-1. Required Adjustments Type of repair Step Required adjustments After you disassemble or replace parts in the EPSON Stylus COLOR Printhead Make sure that no ink cartridges are installed, and then 900/900N, you need to make certain adjustments. See...
  • Page 123 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments Table 5-1. Required Adjustments (continued) Table 5-1. Required Adjustments (continued) Type of repair Step Required adjustments Type of repair Step Required adjustments Removing and then Make sure the ink cartridges are not installed, and then C265 Main board Start the adjustment program and select the printer’s...
  • Page 124: Special Adjustment Tools

    EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 5.2 Using the Adjustment Program Table 5-1. Required Adjustments (continued) Type of repair Step Required adjustments The adjustment program lets you perform the following adjustments and Waste Ink Pad After replacing the waste ink pads, clear the waste ink...
  • Page 125: Starting The Adjustment Program

    EPSON Stylus COLOR 900/900N Chapter 5 Adjustments Check the contents of your CONFIG.SYS file, and add the following 5.2.2 Starting the Adjustment Program command line if it’s not already present: To start the adjustment program and get to its main menu, follow these Device=c:\<path name>\ansi.sys or...
  • Page 126 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 4. Press Enter to select Stylus COLOR 900 as your printer’s model In about 5 seconds, the startup menu appears: name. NOTE: Other model names may be added in the future. In that case, use the Up and Down arrow keys to highlight the desired model name, and then press Enter to select it.
  • Page 127 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments After selecting Perform, you see the main menu: From the main menu, you can select any of the options shown below. Main Menu Adjustment 1 Adjustment 2 Maintenance Print A4 Pattern Market Destination...
  • Page 128: Market Destination Check

    EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 5.2.3 Market Destination Check 2. Select Adjustment 1 and press Enter. The following screen appears: Follow these steps to check the market destination setting: “Starting the Adjustment 1. Perform the actions described in Program”...
  • Page 129 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 3. Select Market Destination Check and press Enter. You see the 4. Press Enter again. The market destination appears as in the market Destination Check screen. example below: Figure 5-6. Market Destination Check Screen Table 5-4.
  • Page 130: Printhead Id Input

    EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 5.2.4 Printhead ID Input 3. Perform the actions described in “Starting the Adjustment Program” on page 122. You see the main menu: You need to input the printhead ID under the following circumstances: If you replace the printhead.
  • Page 131 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 4. Select Adjustment 1 and press Enter. The following screen 5. Select Head Actuator Voltage ID Input. You see the printhead ID appears: menu: Figure 5-8. Printhead ID Menu Figure 5-7. Adjustment 1 Menu 6.
  • Page 132 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 7. To input the printhead ID, select Input data. The adjustment After you enter the ROM version, the adjustment program requests program requests the version of your current PROM: the printhead ID: Figure 5-10. Printhead ID Input Figure 5-9.
  • Page 133: Printhead Angular Adjustment

    EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 10. After you enter the printhead ID correctly, you see various screens 5.2.5 Printhead Angular Adjustment while the computer processes the data. After it finishes, the You need to adjust the printhead angle if: following confirmation screen appears: You remove or replace the printhead.
  • Page 134 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 5.2.5.1 Checking the Printhead Angle 2. Select Adjustment 2 and press Enter. The following screen appears: 1. Perform the actions described in “Starting the Adjustment Program” on page 122. You see the main menu: Figure 5-12.
  • Page 135 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 4. Select Print the head angular adjustment pattern. The following 5.2.5.2 Adjusting the Printhead Angle test pattern prints, and the printer automatically ejects the page. When you perform this adjustment, the printhead has C A U T I O N to be moved away from its capping position.
  • Page 136 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments After the test pattern prints (see “Checking the Printhead Angle” 2. Loosen the screw by rotating it one-quarter to one-half turn. Do not page 131), the head angular adjustment menu returns: remove it completely. See the figure below.
  • Page 137 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 4. Loosen the screw by turning it one-quarter to one-half turn. Do not 6. Set the head angle adjustment lever (located on the right side of the remove it completely. See the figure below.
  • Page 138 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 9. Press Enter. A new test pattern prints, but the page remains in the 10. Select Re-Adjustment. Adjustment instructions appear on screen. printer. C A U T I O N Do not press the Load/Eject button to eject the test pattern.
  • Page 139 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 12. Push the color ink cartridge toward the rear, re-tighten the screws, 16. Select End from the re-adjustment menu. It takes about 30 seconds and then press Enter to print another test pattern.
  • Page 140 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 5.2.5.3 Choosing the Best Test Pattern 3. If all the patterns have obvious bands, choose the one with the narrowest bands among those patterns that are symmetrical and in To choose the best test pattern, look for these traits: which the bands on the right and left are the same width.
  • Page 141: Bi-Directional Adjustment

    EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 5.2.6 Bi-Directional Adjustment 1. Perform the actions described in “Starting the Adjustment Program” on page 122. You see the main menu: You need to perform the bi-directional adjustment if: You remove or replace the printhead.
  • Page 142 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 3. Select Bi-Directional Adjustment. You see the Bi-D adjustment 4. Select Print the Bi-D adjustment pattern. You see a description of menu: the pattern to be printed: Figure 5-30. Description of Pattern to Be Printed Figure 5-29.
  • Page 143 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments After you press Enter, the printer prints out an adjustment pattern 5.2.6.2 Understanding the Bi-D Adjustment Pattern like the following sample: When you look at the Bi-D adjustment pattern, note the following: As shown in...
  • Page 144 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 5.2.6.3 Making the Bi-D Adjustment 7. Based on the adjustment pattern you printed (see “Printing the Bi- D Adjustment Pattern” on page 138), select a mode you need to After you print the adjustment pattern, the Bi-D adjustment menu adjust.
  • Page 145 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments After you enter the adjustment value, the software confirms the change: Figure 5-35. Confirmation Screen 9. Press Esc to return to the Bi-D adjustment mode menu (Figure 5-33). If you need to adjust the Bi-D setting in another mode, select that mode and continue as described above.
  • Page 146: Cleaning The Printhead

    EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 5.2.7 Cleaning the Printhead You see the maintenance menu: If your printouts have problems like white banding, color banding, or missing dots, the printhead may need to be cleaned. You can clean the printhead either by using the adjustment program or the printer’s control...
  • Page 147 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 4. Press Enter. The power light on the printer flashes and the printer 4. When you’re done, press Esc repeatedly to return to the main menu begins cleaning the printhead. This takes a little over a minute.
  • Page 148: Initial Ink Charge

    EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 5.2.8 Initial Ink Charge You see the maintenance menu: You need to perform the initial ink charge after replacing the printhead. You can also use it to unclog printhead nozzles that couldn’t be cleared using the normal cleaning sequence.
  • Page 149: Checking And Clearing The Waste Ink Counter

    EPSON Stylus COLOR 900/900N Chapter 5 Adjustments After the flag resets, you see the following confirmation and 5.2.9 Checking and Clearing the Waste Ink Counter instructions: You need to reset the waste ink counter if: All four LEDs on the control panel are blinking.
  • Page 150 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments You see the main menu: 3. Select Indication of the counter value for the Waste Ink Pad. You see the waste ink counter menu. Table 5-13. Main Menu Figure 5-42. Waste Ink Counter Menu 2.
  • Page 151 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 5.2.9.2 Clearing the Waste Ink Counter 2. Select Clear the protection counter values. The software reminds you to replace the waste ink pads: C A U T I O N When you clear the waste ink counter, make sure you replace the waste ink pads with new ones.
  • Page 152: Fan Check

    5.2.10 Fan Check You see the maintenance menu: The cooling fan in the EPSON Stylus COLOR 900/900N does not run all the time. However, if the Ink Out error occurs frequently, this may be a sign that the printer is overheating because the cooling fan is not “Cooling Fan Driver Circuit”...
  • Page 153: Platen Gap (Parallelism) Adjustment

    EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 5.3 Platen Gap (Parallelism) Adjustment The platen gap (parallellism) adjustment ensures that the printhead is set at the proper distance from the paper. Make the adjustment if: You have loosened or adjusted the left or right parallelism adjustment bushing.
  • Page 154 EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 5. Set the blue platen gap lever to the rear to raise the carriage and 10. If the printhead does not touch or drag the thickness gauge, widen the platen gap. decrease the platen gap by moving the right parallelism adjustment bushing lever upward by one notch.
  • Page 155: Checking The Platen Gap

    EPSON Stylus COLOR 900/900N Chapter 5 Adjustments 15. Remove the thickness gauge and place it on the far-left end of the 9. When the adjustment is successful, tighten the screws on both platen (80th-column position). Then adjust the left parallelism bushings.
  • Page 156: Chapter 6 - Maintenance

    & + $ 3 7 ( 5 MAINTENANCE...
  • Page 157: Overview

    To replace the ink cartridges, see “Replacing the Ink Cartridges” Use these EPSON ink cartridges before the expiration date on the on page 154. package: To clean the printhead when you suspect that it’s clogged with ink,...
  • Page 158: Replacing An Ink Cartridge Before It's Empty

    Table 5-1 on page 119. This sequence is unique to the EPSON Stylus COLOR 900/900N and must 2. Press the Load/Eject button and hold it down for three seconds. The be followed exactly, or the printer may display the Ink Out error even carriage moves to the black ink cartridge replacement position.
  • Page 159: Cleaning The Printhead

    You can repeat these steps as many times as necessary. (The Charge Flag (see the printhead. “Initial Stylus COLOR 900/900N is not equipped with the CL3 or so-called Ink Charge” on page 145) “dummy cleaning” sequence, so you don’t have to print a test page between each cleaning cycle.) When you’re done and the power light...
  • Page 160: Replacing The Waste Ink Pads

    EPSON Stylus COLOR 900/900N Chapter 6 Maintenance 6.4 Replacing the Waste Ink Pads 6.5 Replacing the Battery When all four LEDs on the control panel are blinking, a Maintenance The main logic board contains a 3-volt lithium-cell battery which runs Error has occurred.
  • Page 161: Cleaning The Printer

    6.7 Lubrication This printer does not require regular cleaning. However, the following The EPSON Stylus COLOR 900/900N does not need to be lubricated areas can be cleaned of dirt or debris as needed: on a regular basis. However, you should apply lubricants under the...
  • Page 162: Lubrication Points

    EPSON Stylus COLOR 900/900N Chapter 6 Maintenance 6.7.1 Lubrication Points Table 6-3. Lubrication Points (continued) Lubricant Lubrication Point Amount Ref. figure Use the table below for guidance when lubricating parts. Type The left and right PE roller bushings NOTE: Use a syringe to apply all lubricants. For the most control, ×...
  • Page 163 EPSON Stylus COLOR 900/900N Chapter 6 Maintenance Table 6-3. Lubrication Points (continued) C R G u i d e R a i l ( b e t w e e n a r r o w s ) Lubricant Lubrication Point Amount Ref.
  • Page 164 EPSON Stylus COLOR 900/900N Chapter 6 Maintenance Figure 6-5. Combination Gear (14.4, 24) Lubrication (Pump/ASF Switching Mechanism) Figure 6-3. Rear Paper Guide and Paper Feed Roller Lubrication Figure 6-6. ASF Frame Drive Shaft Hole Lubrication Figure 6-4. PF and PE Roller Bushings Lubrication...
  • Page 165: Lubricating The Carriage Guide Shaft

    EPSON Stylus COLOR 900/900N Chapter 6 Maintenance 6.7.2 Lubricating the Carriage Guide Shaft This section includes instructions for lubricating the carriage guide shaft and adding the correct amount of oil to the oil pad, located underneath the carriage. See Figure 6-8 below.
  • Page 166 Follow these steps: 1. Remove the carriage unit. (See “Carriage Unit Removal” page 111.) NOTE: EPSON recommends also removing the printhead. This prevents you from accidentally splattering it with oil when lubricating the oil pad in step 8. See “Printhead Removal”...
  • Page 167 EPSON Stylus COLOR 900/900N Chapter 6 Maintenance 2. Clean the carriage guide shaft by wiping the shaft’s surface with a 4. Using the dry cloth, clean the inside surfaces of the two metal dry cloth. bushings in the carriage unit through which the carriage guide shaft passes.
  • Page 168 EPSON Stylus COLOR 900/900N Chapter 6 Maintenance 6. Using the oiled side of the pad (step 5), lubricate the carriage guide 9. Slide the carriage guide shaft into the carriage unit, and then install shaft thoroughly. Then dispose of the pad.
  • Page 169: Appendix

    & + $ 3 7 ( 5 APPENDIX...
  • Page 170: Connector Summary

    EPSON Stylus COLOR 900/900N Chapter 7 Appendix 7.1 Connector Summary Table 7-1 shows the connector assignments of the C265 Main Board. Figure 7-1 shows the cable connections of the EPSON Stylus COLOR Table 7-1. C265 Main Board Connections 900/900N. Connector...
  • Page 171 EPSON Stylus COLOR 900/900N Chapter 7 Appendix Table 7-2. Connector Pin Assignment - CN5 Table 7-4. Connector Pin Assignment - CN8 Signal Signal Name Function Function Name ANODE1 Row A temperature detection analog signal 1, 7 — Ground ANODE2 Row A temperature detection analog signal...
  • Page 172 EPSON Stylus COLOR 900/900N Chapter 7 Appendix Table 7-5. Connector Pin Assignment - CN9 Table 7-6. Connector Pin Assignment - CN10 Signal Name Function Signal Name Function COMe Power voltage for Nozzle Row E (Yellow) PF A Phase A Input/Output data...
  • Page 173 EPSON Stylus COLOR 900/900N Chapter 7 Appendix Table 7-8. Connector Pin Assignment - CN12 Table 7-11. Connector Pin Assignment - CN15 Signal Name Function Signal Name Function ASF A Phase A Input/Output data — Ground When inputting, sends current through the —...
  • Page 174: Eeprom Address Map

    EPSON Stylus COLOR 900/900N Chapter 7 Appendix 7.2 EEPROM ADDRESS MAP Table 7-13. EEPROM Address Map (continued) This section contains the EEPROM address map for the Stylus COLOR QPIT Factory 900/900N. Address Explanation Settings settings settings Table 7-13. EEPROM Address Map -36 ≤...
  • Page 175 EPSON Stylus COLOR 900/900N Chapter 7 Appendix Table 7-13. EEPROM Address Map (continued) Table 7-13. EEPROM Address Map (continued) QPIT Factory QPIT Factory Address Explanation Settings Address Explanation Settings settings settings settings settings 0: Roman 1: Sans Serif Interface time-out...
  • Page 176 EPSON Stylus COLOR 900/900N Chapter 7 Appendix Table 7-13. EEPROM Address Map (continued) Table 7-13. EEPROM Address Map (continued) QPIT Factory QPIT Factory Address Explanation Settings Address Explanation Settings settings settings settings settings − bit7: Software Password 1 (0=ESC/P, 1=IBM) −...
  • Page 177 EPSON Stylus COLOR 900/900N Chapter 7 Appendix Table 7-13. EEPROM Address Map (continued) Table 7-13. EEPROM Address Map (continued) QPIT Factory QPIT Factory Address Explanation Settings Address Explanation Settings settings settings settings settings − 5EH, 5FH Ink counter Ry0 Temperature at Bi-D...
  • Page 178: Component Layout

    EPSON Stylus COLOR 900/900N Chapter 7 Appendix 7.3 Component Layout Figure 7-2. C265 Main Board (Component side)
  • Page 179 EPSON Stylus COLOR 900/900N Chapter 7 Appendix Figure 7-3. C265 Main Board (Soldering side)
  • Page 180 EPSON Stylus COLOR 900/900N Chapter 7 Appendix Figure 7-4. C265 PSB Board Figure 7-5. C265 PSE Board...
  • Page 181 EPSON Stylus COLOR 900/900N Chapter 7 Appendix Figure 7-6. C265 PNL Board...
  • Page 182: Parts List

    EPSON Stylus COLOR 900/900N Chapter 7 Appendix 7.4 Parts List Table 7-14. Printer Parts List (continued) Parts Price List Name Name Used in Manual, If Different SHIELD PLATE, MAIN, UPPER, Table 7-14. Printer Parts List RIGHT Parts Price List Name...
  • Page 183 EPSON Stylus COLOR 900/900N Chapter 7 Appendix Table 7-14. Printer Parts List (continued) Table 7-14. Printer Parts List (continued) Parts Price List Name Name Used in Manual, If Different Parts Price List Name Name Used in Manual, If Different C.B.S-TITE SCREW...
  • Page 184 EPSON Stylus COLOR 900/900N Chapter 7 Appendix Table 7-14. Printer Parts List (continued) Table 7-14. Printer Parts List (continued) Parts Price List Name Name Used in Manual, If Different Parts Price List Name Name Used in Manual, If Different BUSHING, PARALLEL, ADJUST,...
  • Page 185 EPSON Stylus COLOR 900/900N Chapter 7 Appendix Table 7-14. Printer Parts List (continued) Table 7-14. Printer Parts List (continued) Parts Price List Name Name Used in Manual, If Different Parts Price List Name Name Used in Manual, If Different HOLDER, FFC, CR...
  • Page 186 EPSON Stylus COLOR 900/900N Chapter 7 Appendix Table 7-14. Printer Parts List (continued) Table 7-14. Printer Parts List (continued) Parts Price List Name Name Used in Manual, If Different Parts Price List Name Name Used in Manual, If Different REINFORCEMENT PLATE, C.P.P-TITE SCREW, 4X12, F/ZN...
  • Page 187: Exploded Diagrams

    EPSON Stylus COLOR 900/900N Chapter 7 Appendix 7.5 Exploded Diagrams See the following pages for the exploded diagrams.
  • Page 188 EAI Only for EAI,LATIN for LATIN for ETT for USA for EUR.,ASIA, OSEANIA EPSON STYLUS COLOR 900 No.1 Rev.01 10056...
  • Page 189 EPSON STYLUS COLOR 900 No.2 Rev.01 10056...
  • Page 190 EPSON STYLUS COLOR 900 No.3 Rev.01 10056...
  • Page 191 (501) EPSON STYLUS COLOR 900 No.4 Rev.01 10056...
  • Page 192 (503) (504) 589 590 589 590 589 590 589 590 589 590 589 590 EPSON STYLUS COLOR 900 No.5 Rev.01 10056...
  • Page 193 EPSON STYLUS COLOR 900 No.6 Rev.01 10056...
  • Page 194: Shipping Container

    The parts of the shipping container are listed below. To repack the printer, see the exploded diagram on the following page. Table 7-15. Shipping Container Parts List Description PACKING CARTON FOR EPSON AMERICA, INC. PACKING CARTON FOR SOUTH-EAST ASIA PRINTER PADS ACCESSORIES PADS PAPER OUTPUT TRAY PAD PLASTIC PROTECTIVE BAG, 510 X 870 X 0.05T...
  • Page 195 02 for S.E.ASIA EPSON STYLUS COLOR 900 No.7 10056 Rev.01...
  • Page 196: Circuit Diagrams

    EPSON Stylus COLOR 900/900N Chapter 7 Appendix 7.7 Circuit Diagrams See the following pages for the circuit diagrams below. C265 Main Board (1/2) C265 Main Board (2/2) C265 PSB Board C265 PSE Board C265 PNL Board...

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Stylus color 900n