Epson GT-12000- Manuals

PREFACE This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of GT-12000. The instructions andprocedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the pr...

REVISION STATUS Rev. Date Page(s) Contents A 1997/10/20 All First release

TABLE OF CONTENTS PRODUCT DESCRIPTIONS 1.1 OVERVIEW....................................................................................................................................................................1-1 1.2 SPECIFICATION ..................................................................

GT-12000 Product Descriptions Rev. A 1-2 IMAGING FUNCTIONSGradation: Input/internal process = 12bit/pixel Output = 8 or 12bit/pixel Zoom: 50 to 200% (1% increment) Gamma Correction: CRT (A/B)PRINTER (A/B/C)User definable (1 level) Color Correction: Impact-Dot PrinterThermal PrinterInk jet PrinterCRT...

GT-12000 Product Descriptions Rev. A 1-3 ENVIRONMENTAL CONDITIONSTemperature: Operating = 5 to 35°C Storage = -25 to 60°C Humidity: Operating = 10 to 80% (no condensation) Storage = 10 to 85% (no condensation) RELIABILITYMain unit: MCBF 100,000 cycle OPERATING CONDITIONSDust: Ordinary office or home...

GT-12000 Product Descriptions Rev. A 1-4 1.3 INTERFACE SPECIFICATION This scanner is equipped with the following interfaces: q Bi-directional Parallel Interface n Data: 8 bit parallel n Handshake: BUSY, /ACK handshaking n Signal: TTL level n Connector: 36 pins (Amphenol) q SCSI interface n Function:...

GT-12000 Product Descriptions Rev. A 1-6 1.5 OPERATION SPECIFICATIONS 1.5.1 Switch Specification This scanner is equipped with 4 switches. Their functions are describedbelow: q “OPERATE “ n Turns on and off the scanner. n Pressing this switch for power-on initializes the scanner. q “RESET”Initialize...

GT-12000 Product Descriptions Rev. A 1-7 1.5.3 Switch Setting Among the switches equipped with this scanner, SCSI switch and theterminator switch, which are used for SCSI interface, have the followingsettings: q SCSI-ID setting switch ID No. Availability Note 0 Available Normally assigned to other S...

GT-12000 Product Descriptions Rev. A 1-8 1.5.5 Readable Area The origin point for this scanner is marked at the rear left corner of thedocument table viewed from the front. See Figure 1-3 for the maximumreadable area of the scanner. 310mm 437mm 2 ±1.5mm 2 ±1.5mm 2 ±1.5mm 2 ±1.5mm Sub Scan Direction ...

GT-12000 Operating Principles Rev. A 2-1 2.1 GENERAL DESCRIPTION The EPSON GT-12000 is mainly composed of the following units: q Scanner mechanism(Lamp/Mirror units, CR drive mechanism, integral lens/CCD sensorunit drive mechanism) q Control Circuit q Power supply circuit The EPSON flat-bed type sca...

GT-12000 Operating Principles Rev. A 2-2 2.2 MECHANISM OPERATING PRINCIPLES Compared with other EPSON scanners, the main feature of this scannerlies in its new optical mechanism used for reading images. Instead of theunited lamp & CCD movement system used for other scanners, thisscanner scans wi...

GT-12000 Operating Principles Rev. A 2-3 2.3 ELECTRICAL CIRCUIT OPERATIONS This section describes the electrical circuit of the GT-12000. 2.3.1 Control Circuit Operation The control circuits of this scanner are: q B054MAIN board (Main control circuit board) q B054SUB board (Relay board) q B054PNL bo...

GT-12000 Operating Principles Rev. A 2-5 2.3.2 Power Supply Circuit Operation Since the power supply circuit board B054PSH for this scanner meets theuniversal specification, it can use the rated voltage in the range from 100Vto 240V.The electrical circuit for the AC input part is designed on the bas...

GT-12000 Troubleshooting Rev. A 3-1 3.1 OVERVIEW This chapter describes the troubleshooting which enables you to solve theproblem efficiently when the scanner is operating abnormally. Theremedies for the errors detected by the self-diagnostic function and thecheck point for each phenomenon are descr...

GT-12000 Troubleshooting Rev. A 3-2 3.1.2 Troubleshooting This section provides test points for each major unit and check points foreach abnormal phenomenon. 3.1.2.1 Test Points Test points for the motors and sensors are shown in the tables below. Motors q Condition: Test the motor without any cable...

GT-12000 Troubleshooting Rev. A 3-3 Flowchart 3-1Phenomenon: “Operate” LED does not light. Disconnect the cables from the connectors CN2/4/5/6/7 on the B054MAIN board, then, with the scanner power on, check the connector CN 5 on the B054MAIN board for the correct voltages shown below: Between Pins 1...

GT-12000 Troubleshooting Rev. A 3-7 Flowchart 3-7Phenomenon: Scanned image is abnormal. Start B054MAIN board is defective. Clean the glass. No Yes Clean the mirror. No Yes Replace the B054MAIN board and perform a test scanning. Is the image normal? The mechnasim is defective. (Needs replacing.) No I...

GT-12000 Troubleshooting Rev. A 3-8 3.1.3 Troubleshooting for Electrical Circuit This section describes the abnormal phenomenon and correspondingcheck points for each electrical circuit board. 3.1.3.1 Power Supply Board (B054PSH Board) Phenomenon Check Points <Abnormal voltage> +5VDC is not ou...

GT-12000 Troubleshooting Rev. A 3-9 3.1.3.2 Control Circuit Board (B054MAIN Board) Phenomenon Check Points <No operation at all> Reset IC is defective. Check the reset IC (IC2) for the signalwaveforms output from the following pins: · Pin 7 (for +5V input) · Pin 6 (for PWRES output) <No ope...

GT-12000 Troubleshooting Rev. A 3-10 Phenomenon Check Points <”Fatal Error”> Motor (for mirror) driver circuit is defective. Check the Driver IC (IC3/4: · Phase drive signal waveformoutput from Pin 8/6 <”Fatal Error”> Motor (for focus) driver circuit is defective. Check the driver IC (IC...

GT-12000 Disassembly and Assembly Rev. A 4-1 4.1 OVERVIEW This chapter describes how to disassemble this scanner. Unless otherwisespecified, assembly can be accomplished by following disassemblyprocedures in reverse order. WARNING n n n n Be sure to disconnect the power cable from theAC power socket...

GT-12000 Disassembly and Assembly Rev. A 4-2 4.2 DISASSEMBLY PROCEDURES This section describes disassembling and removing procedures for eachmajor unit of the scanner. See the flowchart in Figure 4-1. The jobs in the yellow boxes involve usingthe adjustment tools exclusively designed for this scanne...

GT-12000 Disassembly and Assembly Rev. A 4-3 4.2.1 Electrical Circuit Removal The major electrical circuit boards (B054MAIN and B054PSH) of thisscanner are all stored in one independent shield compartment. Therefore,they can be removed in one unit (board unit) from the scanner with ease. 1. Disconne...

GT-12000 Disassembly and Assembly Rev. A 4-4 4.2.1.2 MAIN/B054PSH Board Removal B054MAIN and B054PSH boards stored in the shield compartment areremoved in the following procedure: 1. Remove the shield compartment. (See Section 4.2.1.)2. Remove 12 screws (No.3) securing the top shield of the board un...

GT-12000 Disassembly and Assembly Rev. A 4-5 4.2.2 Scanner Body Disassembly This section describes procedures for disassembling the major units of thescanner. CAUTION When removing the CR fixing knob or screw caps,be careful not to damage the upper housing. 4.2.2.1 Upper Housing Removal 1. Remove th...

GT-12000 Disassembly and Assembly Rev. A 4-6 4.2.2.2 Scanner Mechanism Removal The scanner mechanism can be removed from the lower housing in thefollowing procedure: 1. Remove the upper housing. (See Section 4.2.2.1.)2. Remove 4 screws (No.1) securing the scanner mechanism to the lower housing at th...

GT-12000 Disassembly and Assembly Rev. A 4-7 4.2.3 Scanner Mechanism Disassembly The rest part of the chapter describes the procedures for removing themajor parts/units in the scanner mechanism. CAUTION Note that producing this scanner requires ratherprecise assembly and adjustment to ensureaccurate...

GT-12000 Disassembly and Assembly Rev. A 4-8 4.2.3.2 Sub Board Assembly Removal 1. Remove the scanner mechanism. (See Section 4.2.2.2.)2. Turn the mechanism over and place it on a flat surface.3. Disconnect all connector cables from the sub board assembly (B054SUB board). 4. Remove 2 screws (No.3) s...

GT-12000 Disassembly and Assembly Rev. A 4-10 4.2.3.4 CR Motor Assembly Removal This section describes procedure for removing the motor unit which drivesthe carriage mechanism (mirror/lamp). 1. Remove the scanner mechanism. (See Section 4.2.2.2.)2. Turn the mechanism over and place it on a flat surf...

GT-12000 Disassembly and Assembly Rev. A 4-11 4.2.3.5 Glass Frame Assembly Removal and Pre-operation Since the glass frame assembly is one of the reinforcing parts of themechanism, whole mechanism may be deformed if it is removed. Be sureto follow the instruction provided in this section during any ...

GT-12000 Disassembly and Assembly Rev. A 4-12 3. Remove 9 screws and remove the glass frame assembly. The screws to be removed and their locations are as follows: · No.4: 5 screws securing the glass frame assembly by the right and left sides. · No.1: 2 screws securing the glass frame assembly by the...

GT-12000 Disassembly and Assembly Rev. A 4-13 4.2.3.5.1 Glass Frame Assembly Installation After the glass frame assembly has been removed for any purpose, itmust be reinstalled in the following procedure. 1. Place the glass frame assembly to the specified position in the scanner mechanism. 2. Referr...

GT-12000 Disassembly and Assembly Rev. A 4-14 4.2.3.6 Lamp Assembly and Inverter Board Assembly Removal This section describes how to remove the lamp assembly and the inverterboard assembly from the carriage. 1. Remove the glass frame assembly. (See Section 4.2.3.5.)2. Move the CR to the position in...

GT-12000 Disassembly and Assembly Rev. A 4-15 4. Disconnect the connector cable for the lamp from the connector CN2 on the inverter board assembly. Then remove the lamp from thecarriage. 5. Disconnect the cable (black) from the connector CN1 on the inverter board assembly. Then remove the bracket (s...

GT-12000 Disassembly and Assembly Rev. A 4-16 4.2.3.7 HP (AF) Sensor Removal This section describes the procedure for removing the HP sensor whichdetects the reference position for the AF drive mechanism (lens/CCDsensor unit). 1. Remove the glass frame assembly. (See Section 4.2.3.5.)2. Remove 4 scr...

GT-12000 Disassembly and Assembly Rev. A 4-17 4.2.3.8 AF Motor Assembly Removal This section describes how to remove the motor which drives AF drivemechanism.1. Remove the glass frame assembly. (See Section 4.2.3.5.)2. Remove 4 screws (No.3) and remove the cover which covers the AF drive mechanism. ...

GT-12000 Adjustment Rev. A 5-1 5.1 OVERVIEW This scanner requires no adjustment for any service such asdisassembling and assembling the scanner including part replacement isprovided within the specification in Chapter 4 “Disassemble andAssembly”.

GT-12000 Maintenance Rev. A 6-1 6.1 OVERVIEW This chapter provides information necessary to keep the scanner functionin optimum condition constantly and to prevent troubles. 6.1.1 Cleaning Perform cleaning when stain is noticeable. Stain on the document glass,particularly, has direct effect on scann...

GT-12000 Appendix Rev. A 7-1 7.1 OVERVIEW This chapter provides information necessary for servicing. 7.1.1 Connector Pin Assignment C N 3 C N 2 C N 4 C N 7 C N 5 C N 6 C N 1 CN5 C N 4 C N 1 CN2 C N 2 C N 1 C N 3 C N 6 S c a n n e r M e c h a n i s m B 0 5 4 M A I N B o a r d B 0 5 4 P S H B o a r d ...

GT-12000 Appendix Rev. A 7-10 7.4 EXPLODED DIAGRAMS Figure 7-6. Exploded Diagrams (1)

ADF Product Description Rev. A 1-1 1.1 FEATURES This auto document feeder (ADF) is the exclusive ADF for GT-12000, andits main features are as follows: q Supports large document up to A3 size q Page transportation systemDocument is transported page by page for each scanning operation q Supports dupl...

ADF Product Description Rev. A 1-2 Accuracy in top position: Single feed: 0 - +2 mm Duplex feed: 0 - +2 mm Center alignment: Single feed: +1.5 mm Duplex feed: +3 mm Document skew: Single feed: +1.5 mm Duplex feed: +3 mm * Center alignment = (C+D)/2* Skew amount = (A-B)x200/L A B C D L D o c u m e n ...

ADF Product Description Rev. A 1-3 ELECTRICAL SPECIFICATIONPower supply: Supplied through the scanner- DC24V ± 10% - DC5V ± 10% Consumption current: DC24V = 2.0A DC5V = 0.3A Insulation resistance: 10 m W or more at DC500V (Between AC line and chassis) Dielectric strength: AC1000V per minute(Between ...

ADF Product Description Rev. A 1-4 APPEARANCEWeight: 16Kg or less Dimensions (W x D x H): 601 x 529 x 122 mm / 23.6 x 20.8 x 4.8 inch (with the extension tray stored.) 6 0 1 m m / 2 3 . 6 i n c h 529 m m / 20. 8 i nc h 1 2 2 m m 4 . 8 i n c h 1 4 7 m m 5 . 8 i n c h Figure 1-2. External Dimensions o...

ADF Operating Principles Rev. A 2-2 SINGLE FEEDINGIn single feeding mode, the ADF loads document from the paper feed trayand transports it to the scanning position, then ejects it immediately afterscanning. Therefore, document must be always transported in singledirection to let the ADF repeat feedi...

ADF Operating Principles Rev. A 2-3 5. The document is transported until the rear edge passed the document stopper, then the transportation motor stops rotating. 6. The transportation motor rotates backward to move the documentback until it bumps against the paper stopper, and the motor stops.With t...

ADF Operating Principles Rev. A 2-4 9. After scanned, the scanned document is ejected according to thesingle feed command from the scanner and the pre-fed document istransported to the scanning position. 10. After the document is fed by the forward rotation of the transportation motor and the paper ...

ADF Operating Principles Rev. A 2-5 13. While scanning, the document is ejected to the output tray. Rotational speed of the paper eject/reverse motor is reduced when the papereject/reverse sensor is near off condition to output the document tothe output tray slowly. 14. The paper eject/reverse motor...

ADF Operating Principles Rev. A 2-6 REVERSE FEEDINGIn the reverse feeding mode, document is fed in the following order: The document is fed. ® The document is reversed. ® Image is scanned ® The document is reversed again . ® Image on the reversed side is scanned. Setting a document1. Document is set...

ADF Operating Principles Rev. A 2-8 9. According to the reverse feeding command, the transportation motorand the paper eject/reverse motor rotate forward to transport thescanned document to the paper eject/reverse mechanism and theflapper solenoid comes on to switch the paper path to the papereject/...

ADF Operating Principles Rev. A 2-10 17. The transportation motor rotates backward and then the paper eject/reverse motor rotates forward to transport the document fromthe paper eject/reverse mechanism to the scanning position. Thepaper eject/reverse motor stops when the paper eject/reverse sensorgo...

ADF Operating Principles Rev. A 2-11 21. According to the ejection command from the scanner, the scanner starts ejecting the scanned document. The transportation motor andthe paper eject/reverse motor rotate forward to eject the scanneddocument. 22. When the paper eject/reverse sensor is near off co...

ADF Operating Principles Rev. A 2-12 2.1.2 Electrical Circuit This ADF (R-4C1070).is equipped with only one control board. Thissection describes the functions of the board. 2.1.2.1 Transmission Circuit The transmission circuit manages parallel and serial signal transmissionbetween the ADF and the sc...

ADF Operating Principles Rev. A 2-13 2.1.2.2 Paper Size Detection Circuit The edge guides in the paper feed tray of this ADF are used to detect thepaper size. As they move, slide resistance changes in accordance with thedistance between them. The resistance is then converted into analog dataand tran...

ADF Operating Principles Rev. A 2-14 2.1.2.4 Paper Feeding Motor Encoder Sensor Circuit The paper feeding motor is used to manage the following operations: q Registration operation q Drives the transportation motor after the timing sensor goes off. q Controlling backward rotation of the motor Since ...

ADF Operating Principles Rev. A 2-15 2.1.2.6 Sensor Circuits The timing sensor and the paper eject/reverse sensor are reflex typesensors, and each of them has an LED and photo-transistor built in it.Each sensor emits infrared light from the LED toward the mirror attachedacross from the sensor and de...

ADF Operating Principles Rev. A 2-16 2.1.2.7 Switch Circuits Each of the ADF, feeding cover and ejection cover is equipped with aopen/close sensor to detect status such as operation stop and erroroccurrence. These open/close mechanisms are used when removingjammed documents or setting documents manu...

ADF Operating Principles Rev. A 2-18 2.1.2.10 Transportation/Paper Eject/Reverse Motor Driver Circuits Stepping motors are used for the transportation motor and the papereject/reverse motor. Each motor circuit controls constant current for themotor phase as well as direction for rotating and motor s...

ADF Operating Principles Rev. A 2-19 2.1.2.11 Feeding Solenoid/Reverse Solenoid Sensor Circuits This ADF is equipped with 2 solenoids; one is a feeding solenoid used foropening and closing the paper feed shutter, and the other is a flappersolenoid which drives the flapper used to reverse the documen...

ADF Operating Principles Rev. A 2-20 2.1.2.13 EEPROM Transmission/Write Circuit Following values can be written into the EEPROM of this ADF: q Reference value for the empty sensor sensitivity q Reference value for the registration sensor sensitivity q Reference value for the paper eject/reverse sens...

ADF Troubleshooting Rev. A 3-1 3.1 OVERVIEW This chapter describes the troubleshooting required when this ADFfunctions abnormally. Generally, defective part can be found easily byrunning various test modes as long as the ADF is in operation. The testmodes are described in the following sections. 3.1...

ADF Troubleshooting Rev. A 3-2 3.1.1.1 Single Feeding Test Mode With this test mode, you can detect the defective part by setting thedocument (including a blank paper) and performing the single feeding. CHECK POINT ü ü ü ü Abnormal phenomenon does not necessarydetermine the test mode to be performed...

ADF Troubleshooting Rev. A 3-5 3.1.2 Motor/Solenoid Internal Coil Resistance This section provides the check points for the motors which are founddefective through the test modes described in Section 3.1.1. CHECK POINT ü ü ü ü n n n n Since a DC motor is used for the paperfeeding motor, check contin...

ADF Troubleshooting Rev. A 3-6 3.1.2.2 Paper Eject/Reverse Motor Check Point A 4-phase stepping motor is also used for the paper eject/reverse motor,and coil resistance between each coil is 2.6 W ± 10% . Internal coil connection is shown below. Y e l l o w B l u e R o t o r 1 3 5 7 9 1 1 B l a c k R...

ADF Disassembly and Assembly Rev. A 4-1 4.1 OVERVIEW This chapter describes how to dissemble the auto document feeder (ADF).If no instruction is given, assembly can be carried out by reversing thedisassembly procedures. CAUTION Since the ADF consists of many metal frames, becareful not to cut yourse...

ADF Disassembly and Assembly Rev. A 4-2 4.2 DISASSEMBLY PROCEDURE Disassembly/Removal procedures for the major units in the ADF aredescribed in the following sections. 4.2.1 Paper Feed Tray Removal 1. Remove the ADF unit from the scanner body.2. Move the edge guides (blue) to the center.3. Remove 2 ...

ADF Disassembly and Assembly Rev. A 4-3 4.2.2 Control Board Unit Removal 1. Turn the ADF over and remove 3 screws, then remove the shield cover.2. Disconnect all connector cables from the connectors on the control board. (See Figure 4-4 for connector location indicated with the yellowbroken lines.) ...

ADF Disassembly and Assembly Rev. A 4-4 4.2.3 Transportation Belt Unit Removal 1. Turn the ADF over.2. Fold 2 areas of the belt (indicated areas in Figure 4-5.) inside.3. Remove 2 right and left transportation belt unit fixing screws indicated in Figure 4-6, then hold the top edge of the belt and pu...

ADF Disassembly and Assembly Rev. A 4-6 4.2.5 Paper Eject/Reverse Unit Removal 1. Turn the ADF over.2. Remove 4 screws securing the paper eject/reverse unit and 1 screw securing the GND line. 3. Disconnect 2 cables which connect the paper eject/reverse unit to the connectors on the control board uni...

ADF Disassembly and Assembly Rev. A 4-7 4.2.6 Transportation Belt Drive Motor Removal 1. Remove the transportation belt unit. (See Section 4.2.3.)2. Remove the shield cover. (See Section 4.2.2.)3. Disengage the belt from the motor pinion gear.4. Disconnect the cable from the motor, then unhook the t...

ADF Disassembly and Assembly Rev. A 4-8 4.2.7 Paper Feed Motor Unit Removal This section describes the procedure for removing the paper feed motor inthe paper feed unit. 1. Remove the paper feed unit. (See Section 4.2.4.)2. Loosen the screw and remove the harness cover.3. Release all cables from the...

ADF Disassembly and Assembly Rev. A 4-9 4.2.8 Registration/Timing Sensor Removal This section describes how to remove the registration sensor and timingsensor in the paper feed unit. 1. Remove the paper feed unit. (See Section 4.2.4.)2. Remove the paper guide. The fixing screws to be removed are: · ...

ADF Disassembly and Assembly Rev. A 4-11 4.2.10 Paper Eject Sensor Removal This section describes how to remove the paper eject sensor in the papereject/reverse unit. 1. Remove the paper eject/reverse unit. (See Section 4.2.5.)2. Remove 2 screws at the bottom of the paper eject/reverse unit and remo...

ADF Adjustment Rev. A 5-1 5.1 OVERVIEW This chapter describes adjustments required after disassembling andassembling the ADF or replacing specified parts. Adjustment items of thisADF fall in 2 categories: mechanical adjustment and electrical adjustment. 5.1.1 Adjustment Tools The tools used for the ...

ADF Adjustment Rev. A 5-2 5.1.2.1 Flapper Solenoid Installation Position Adjustment This adjustment is made to fix the flapper solenoid at the position whereproper operation of the flapper is ensured. A flapper is used toreverse/eject the document, and if it is set at an improper position, it maycau...

ADF Adjustment Rev. A 5-3 5.1.2.2 Separation Plate Gap Adjustment To feed paper one by one from the paper feed tray into ADF in order, thegap between the paper separation plate and paper feed roller must beproperly set. Failure in this adjustment may cause jamming or multiplefeeding of the document....

ADF Adjustment Rev. A 5-4 5.1.2.3 Belt Tension Adjustment This adjustment is made to adjust tension of the timing belt used totransmit drive sent from the transportation motor to the transportation beltunit. Failure in this adjustment loses proper play of the belt, and documentskew or jam may occur....

ADF Adjustment Rev. A 5-5 5.1.2.5 Micro Switch Installation Position Adjustment This adjustment is made to adjust the micro switch installation position.With this adjustment, open/close condition of the ADF is correctlydetected. At the factory level, the micro switch comes on when the gapbetween the...

ADF Adjustment Rev. A 5-6 5.1.2.6 Skew Correction Adjustment You must make this adjustment when the output image appears skewedon the PC monitor or ADF is removed from the ADF rear case. To makethe adjustment, use the scale on the right hinge base which supports theADF with the left hinge base. Sinc...

ADF Adjustment Rev. A 5-7 5.1.3 Electrical Adjustment This section describes the electrical adjustment for ADF. It consists of 3adjustment items which must be made after specified actions are taken,as shown in Table 5-3. Table 5-3. Electrical Adjustment Adjustment Item Actions taken Sensor adjustmen...

ADF Adjustment Rev. A 5-8 5.1.3.1 Sensor Adjustment This ADF is internally equipped with the following 3 photo-interruptersensors; empty sensor, registration sensor, and reverse sensor.Since these sensors function by transmitting infrared ray, paper debrisand dust built up around the sensors bring c...

ADF Adjustment Rev. A 5-9 5.1.3.2 EEPROM Initialize and Sensor Adjustment This adjustment must be made after the control board unit is replaced.The EEPROM on the control board stores values for sensor sensitivity andscan stop position. Therefore, whenever you replace the control board,you must perfo...

ADF Maintenance Rev. A 6-1 6.1 OVERVIEW Maintaining of this ADF includes the following 3 items: cleaning,lubrication and adhesion. This chapter provides information on thelubricants and adhesives used for maintaining this ADF. CAUTION n n n n Never apply thinner, trichloroethylene, orketone-based so...

ADF Maintenance Rev. A 6-2 6.1.1.1 Cleaning Points Pickup RollerThe pickup roller, a half-moon-shape roller with a toothed side on it, islocated in the bottom part of the paper feed tray. Turn the roller manuallyand clean it with a cloth moistened with alcohol or water. Pick-up Roller Figure 6-1. Pi...

ADF Maintenance Rev. A 6-3 Transportation BeltWith the ADF fully open, clean the belt by turning it manually. Transportation Belt Figure 6-3. Transportation Belt Cleaning Reverse Roller2 reverse rollers are located under the paper eject cover. Clean the rollersby turning them manually. Reverse Rolle...

ADF Maintenance Rev. A 6-4 Paper Eject Roller2 paper eject rollers are located near the slot where document is ejected.Clean the rollers by turning them manually. Paper Eject Roller Figure 6-5. Paper Eject Roller

ADF Maintenance Rev. A 6-5 Timing SensorWith the ADF open, remove 2 screws securing the registration guide onthe left. Then clean the timing sensor. Remove 2 screws and open the registration guide. Figure 6-6. Releasing the Registration Guide Timing Sensor and Reflection Plate Figure 6-7. Timing Sen...

ADF Maintenance Rev. A 6-7 6.1.2 Lubrication This section gives information on where to lubricate in the ADF. WARNING Use only the lubricant specified for this ADF,since use of other lubricants may damagenearby parts. The lubricant specified is TBD. Lubricating Point (1) Points: q q q q Cutouts in t...

ADF Maintenance Rev. A 6-8 Lubricating Point (2) Points: q q q q Sliding part for the bushing and the pulley roller holder q q q q Sliding part for the slide shaft bushing and the pulley holder Amount: 10 mg each P u l l e y R o l l e r H o l d e r S l i d e S h a f t B u s h i n g A ' A B u s h i n...

ADF Maintenance Rev. A 6-9 Lubricating Point (4) Points: Sliding parts in the leaf spring for the holding roller (Colored areas in Figure 6-13) Amount: 5 mg each L u b r i c a t i n g P o i n t H o l d i n g R o l l e r L e a f S p r i n g f o r H o l d i n g R o l l e r L u b r i c a t i n g P o i ...

ADF Maintenance Rev. A 6-11 Lubricating Point (8) Points: Tension shaft surface around which the right tension roller turns Amount: 5 mg Note: Do not lubricate the external surface of the right tension roller. T e n s i o n P l a t e T e n s i o n S h a f t R i g h t T e n s i o n R o l l e r Figure...

ADF Maintenance Rev. A 6-12 Lubricating Point (10) Points: Sliding part of the reverse roller shaft(Colored area in Figure 6-19) Amount: 5 mg each Note: Do not lubricate the external surface of the reverse roller. R e v e r s e R o l l e r S h a f t R e v e r s e R o l l e r Figure 6-19. Lubricating...

ADF Maintenance Rev. A 6-15 6.1.3 Adhesion This section provides adhering points in the ADF. WARNING Use only the adhesive specified for this ADF,since use of other adhesives may damagenearby parts. The specified adhesive is lock-tight #2 (B730200200). Adhering Point (1) q Occasion: Front and rear p...

ADF Maintenance Rev. A 6-16 Adhering Point (3) q Occasion: Discharging brush installation q Amount: 5 mg each q Method: Apply lock-tight to the half of the screw shaft from the head;then fasten the screw. Note: Do not apply any adhesives to the brush. S c r e w s s e c u r i n g t h e b r u s h D i ...

ADF Appendix Rev. A 7-1 7.1 CONNECTOR SUMMARY This section describes all connectors on the control board for the ADF andtheir corresponding signals and functions. Table 7-1. Connector Pin Assignment (CN1) Pin No. Signal name I/O destination Signal level Function 1 +5V Documentwidth +5V Inputs +5VDC ...

ADF Appendix Rev. A 7-3 7.2 EXPLODED DIAGRAMS Figure 7-1. Exploded Diagram (1)

Contents Introduction Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2How to Use This Guide . . . . . . . . . . . . . . . . . . . . . . . 1-3Warnings, Cautions, and Notes . . . . . . . . . . . . . ...

Chapter 3 Options The Transparency Unit . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Unpacking the Transparency Unit . . . . . . . . . . . . . . . 3-2Installing the Transparency Unit . . . . . . . . . . . . . . . . 3-4Using the film holders and reflective document mat . . . . 3-7Placing trans...

L Ginger Rev.C A5 size Frontmatter 97/07/23 Pass 1, DR vi

Introduction The EPSON ® GT-12000 is a true 800-dpi full-color flatbed image scanner with an A3 or US B size scanning area. It has the abilityto scan in color or grayscale, making it ideal for virtually alluses, from simple drawings to complex full-color illustrations.It achieves extremely high qual...

❑ The EPSON TWAIN Pro software helps let you take fulladvantage of your scanner’s advanced features. ❑ Software control of all scanner functions. Softwarecommands are backward compatible with the EPSONGT-12000 color image scanner. Options The following optional items are available to expand theversa...

SCSI Peripheral Cable (50-pin to 50-pin) (B860091)This cable provides connection between two SCSI devices in adaisy chain. Interface CablesFor the parallel interface, you need to have a suitable interfacecable to connect the scanner to your computer. Make sure youchoose a shielded cable. How to Use ...

Warnings, Cautions, and Notes w Warnings must be followed carefully to avoid bodily injury. c Cautions must be observed to avoid damage to your equipment. Notes contain important information and useful tips on the operation of your scanner. For United Kingdom Users Safety information w Warning: This...

The blue wire must be connected to the terminal in the plugmarked with the letter N. The brown wire must be connected to the terminal in the plugmarked with the letter L. If damage occurs to the plug, replace the cord set or consult aqualified electrician. Replace fuses only with a fuse of the corre...

Chapter 1 Setting Up the Scanner Proof Sign-off:K. Nishi _______ D. Grady _______ Choosing a Place for the Scanner . . . . . . . . . . . . . . . . . 1-2 Releasing the Transportation Lock Screw . . . . . . . . . . . . 1-3 Plugging in the Scanner . . . . . . . . . . . . . . . . . . . . . . 1-4 Initial...

Choosing a Place for the Scanner Follow the guidelines listed below when selecting a location foryour scanner: ❑ Place the scanner on a flat, stable surface. The scanner willnot operate properly if it is tilted or at an angle. ❑ Place the scanner close enough to the computer for theinterface cable t...

Releasing the Transportation Lock Screw Before connecting the scanner to a power source, you mustrelease the transportation lock screw. 1. Place the scanner on a flat, stable surface with the left side facing you. 2. Turn the transportation lock screw to the unlocked position using a coin or similar...

Plugging in the Scanner 1. Connect the power cable to the power inlet on the rear of the scanner and plug the other end into a properly groundedoutlet as shown below. c Caution: There are several versions of this scanner designed fordifferent voltages, and it is not possible to change thevoltage. If...

Initialization By observing the scanner’s initialization, you can make surethat the scanner is operating properly before you connect it toyour computer. 1. Open the document cover so you can see the operation of the scanner during initialization. 2. Turn on the scanner by pressing the OPERATE button...

Connecting the Scanner to Your Computer Your scanner has both a bidirectional parallel interface and aSCSI interface. You can connect both kinds of interface cables to the scanner at the same time. The scanner switchesautomatically to the appropriate interface. ❑ For a PC, do one of the following: C...

Connecting the scanner to a parallel interface c Caution:The scanner’s bidirectional parallel interface requires abidirectional interface on your computer. Check yourcomputer’s specifications to see if its built-in parallel interfaceis bidirectional. Use a standard shielded parallel interface cable....

Understanding how SCSI interfaces work For some PCs, you must first install a SCSI board in yourcomputer. Then follow the directions below to connect yourscanner and computer. All Macintosh computers have built-inSCSI ports; you do not need to install a SCSI board. Follow thedirections below to conn...

SCSI ID number setting The factory-set SCSI ID of the scanner is 2. The computer isusually ID number 7. If you are going to add the scanner to asystem in which one of your SCSI devices already has a SCSIID of 2, change the ID number of the scanner to an unusednumber as described below. 1. Locate the...

Terminator The scanner has a built-in terminator. If the scanner is the onlySCSI device you connect to your computer or if it is the lastdevice in the daisy chain, leave the internal SCSI terminatorturned on. It is on if the switch is up. If the scanner is in the middle of a daisy chain, turn theter...

Power-on sequence Follow these instructions each time you turn your computerand SCSI devices on. If you have an internal hard disk, turn on the scanner and anyother SCSI devices you plan to use. Wait a few seconds; thenturn on the computer. If you have an external hard disk, turn on the scanner, ext...

Chapter 2 Scanner Basics Proof Sign-off:K. Nishi _______ D. Grady _______ Lights and Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Scanner errors . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Remov...

Lights and Buttons The scanner has three indicator lights and two buttons. OPERATE light (green) Comes on when the scanner is turned on. READY light (green) Comes on when the scanner is ready to scan images. This light flashes during scanning. When an error occurs, thecombination of this light and t...

Note: ❑ Pressing the Reset button during scanning stops the scanner and may cause an error in the scanning software. ❑ The Reset button may not work if two computers areconnected to the scanner and the computer with thebidirectional parallel interface is not turned on. Scanner errors If an error occ...

Scanning Before scanning a document:Remember to respect the rights of copyright owners. Do not scanpublished text or images without first checking the copyright status. 1. Turn on the scanner by pressing the OPERATE button. The OPERATE light comes on. 2. Turn on the computer and make sure that the s...

Note: ❑ Make sure that the document is flat against the glass surfaceso that the image is properly focused. Also make sure to closethe document cover. This prevents interference from externallight. ❑ Always keep the document table clean. See “Troubleshootingand Maintenance,” Chapter 4, for informati...

Using the Document Guide Make sure you have everything shown below, before readingthis section. During the scanning operation, the position of the opticalreader shifts very slightly as it scans from one side to another.This is normal, and many scanners include a feature to adjustfor this shift. This...

11. Remove the document guide. 12. Lay the clear document guide on the document table with the document guide holes over the screw holes in thescanner. Make sure the larger document guide hole is onthe right when facing the inside of the cover. g-017 g-018 R Ginger Rev.C A5 size Chapter 2 97/07/23 P...

15. Make sure your document is aligned with the grids on the grid document guide. After aligning the document to theproper position, use tape to secure the document in place.Repeat this step for every document you want to scan,placing one document next to another. 16. Remove the grid document guide....

Chapter 3 Options Proof Sign-off:K. Nishi _______ D. Grady _______ The Transparency Unit . . . . . . . . . . . . . . . . . . . . . . . 3-2 Unpacking the Transparency Unit . . . . . . . . . . . . . . 3-2Installing the Transparency Unit . . . . . . . . . . . . . . . 3-4Using the film holders and refle...

For information on the Transparency Unit, see the following.For information on the Auto Document Feeder, see page 3-16. The Transparency Unit The Transparency Unit (B81310 ✽ ) enables EPSON scanner owners to scan transparencies, strips of negatives or positives,and slides in full color. You can also...

Removing the shipping screw To prevent damage during shipping, a shipping screw isattached to the Transparency Unit. Remove this screw beforeyou attempt to use the Transparency Unit. 1. Turn the unit so the glass side faces up. 2. Remove both shipping screws as shown below. 3. Secure the screws you ...

Note: ❑ Before transporting the scanner, remove the Transparency Unitand replace the shipping screws in the outer, transportation holes. ❑ If the unit’s lamp assembly is not in its home position, you cannotreplace the shipping screws. If this is the case, reattach the unit tothe scanner, close the u...

Installing the transparency guide Follow the steps below to install the transparency guide, whichis required to use all of the film holders and to scantransparencies. 1. Open the Transparency Unit. 2. Insert the guide pin and the adjust pin. Make sure the adjust pin’s arrow faces directly towards th...

To scan slides or strips of negative or positive film, see thefollowing section. To scan transparencies, see page 3-14. Toscan normal documents with the transparency guide installed,see page 3-13. Using the film holders and reflective document mat Four film holders for scanning film, and a reflectiv...

Note: ❑ Wipe the glass of the Transparency Unit, the scanner’s documenttable, and the narrow window near the mounting bracket with asoft, dry cloth before scanning transparencies. ❑ Your scanner software automatically controls the operation of theTransparency Unit. Loading 35 mm slides 1. Load slide...

Loading strips of negative or positive film 1. Place the 35 mm filmstrip holder on a flat surface, and remove a strip cover. 2. Insert a strip of film in the filmstrip holder face down. f-006 f-007 L400 16 f-008 R Ginger Rev.C A5 size Chapter 3 97/07/23 Pass 3, DR Options 3-9

3. Replace the strip cover that you removed in step 1. Repeat steps 1 through 3 for all the filmstrips you scan. 4. Place the filmstrip holder on the document table and align it with the notch on the transparency guide as shown below. Loading medium format film 1. Place the medium format film holder...

4. Place the holder on the document table, align it with the notch on the transparency guide, as shown below. Loading normal documents with the Unit installed To scan normal documents with the Transparency Unitinstalled, always insert the reflective document mat includedwith this unit as described b...

3. Place your document on the document table and close the Transparency Unit. To remove the reflective document mat, slide it up and out ofthe slots on the Transparency Unit. Placing transparencies and oversized film To place transparencies or film that is larger than the guides onthe document table...

Note:Make sure the unit is completely closed; otherwise, an option errorresults and you cannot scan the document. If a color stripe appears when scanning film The optical phenomenon where color stripes appear is calledNewton’s ring. This occurs when two, very thin membrancessuch as film surfaces or ...

The Auto Document Feeder The Auto Document Feeder (B81311 ✽ ) allows you to automatically load multiple-page documents into your scanner.This document feeder is particularly useful for OCR (opticalcharacter recognition) scanning, or for creating an imagedatabase. Unpacking the Auto Document Feeder W...

Installing the Auto Document Feeder Before installing the Auto Document Feeder, be aware that: ❑ The Auto Document Feeder is heavy, so you may need tohave someone help you lift it. ❑ The Auto Document Feeder is large, so you should clearthe space around the scanner. Follow the steps below to install...

Installing the PageManager software The Presto! PageManager software that comes with theGT-12000 scanner provides you with many interesting anduseful features including software control of the scan directionso that both sides of a double-side scan come out the samedirection. To install the PageManag...

If your document is in landscape orientation (meaningthe top and bottom edges are longer than the sideedges), insert the document with the left edge closest tothe document feed path. Note: ❑ Make sure the side of document you want to scan faces up. ❑ If you load multiple pages in the Auto Document F...

Loading documents manually You can load documents manually even when the AutoDocument Feeder is installed. To load a document manually, lift the Auto Document Feederand place the document on the document table. Then lower theAutomatic Document Feeder and scan the document asdescribed on page 2-4. No...

3. Determine the direction of scanning using PageManager. For details on using PageManager, see the online help thatcomes with the software. 4. Make your settings in EPSON TWAIN Pro and click the Scan button. See Chapter 3 of the EPSON TWAIN Pro User’s Guide for details on making EPSON TWAIN Prosett...

7. Make your settings in EPSON TWAIN Pro and click the Scan button. See Chapter 3 of the EPSON TWAIN Pro User’s Guide for details on making EPSON TWAIN Prosettings. 8. Click Scan to scan a single marquee, or click Scan All to scan multiple marquees. Fixing paper jams in the Auto Document Feeder If a...

If the lower side of the scanned image is missing If the document feeds past the proper position on thedocument table, turn the dial counterclockwise to a lowernumber. The position changes in 1 mm increments. Note:This problem occurs when the stopper is not installed, or the stopperis not positioned...

Document conditions Make sure of the following before feeding a document: ❑ Ink on the document is dry. ❑ The document has no holes, is not ripped or wrinkled, andhas no articles attached to it. ❑ The document has no staples or other objects attached thatmay damage the feeder mechanism. ❑ The docume...

Chapter 4 Troubleshooting and Maintenance Proof Sign-off:K. Nishi _______ D. Grady _______ Determining the type of Error . . . . . . . . . . . . . . . . . . . 4-2 Indicator lights . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Problems and Solutions . . . . . . . . . . . . . . . . . . . . ....

Determining the type of Error The problems you may have while using the scanner ofteninvolve the operation of your software and computer. Problemsfall into the following categories: ❑ Incorrect setup of the interface ❑ Inappropriate selection of the scanner functions ❑ Incorrect setup of your comput...

Command error The scanner has received incorrect commands from yourscanning software. If this type of error occurs, try to rescan the document. Thescanner returns to normal when it receives correct commands.Normally you do not need to restart the scanner. Interface error The interface setup is wrong...

Option error This indicates a problem such as a paper jam with an installedoption. Check any installed options and carefully remove any jammedpaper, if necessary. Problems and Solutions The OPERATE light does not come on. Make sure the power cable is correctly plugged into thescanner and the power o...

The scanner software does not work properly. Be sure you have correctly installed your software. Make sure that your computer system meets the requirements,such as the operating system version, specified for your software. Also, make sure that your software supports this model ofscanner and that you...

The edges of the document are missing from the scanned output. The document table has non-readable areas around the edges.If part of your document extends beyond the maximum limitsmarked on the document table edge guides, you may have toreposition your document so that the image you want to scan is ...

Straight lines in the image are jagged. The document may be placed at an angle on the documenttable. Align it so that the horizontal and vertical lines arecarefully aligned with the scales on the top and side of thedocument table. The image does not look the same as the original. Try different combi...

Check that your software is properly installed and set up foryour printer. (See your software manual.) Maintaining the Scanner To keep your scanner operating at its best, you should clean itperiodically. Before cleaning, unplug the power cable. Clean the outer case with mild detergent diluted in wat...

Replacing the fluorescent lamps The luminosity of the fluorescent lamps declines over time. Ifthe lamps break or become too dim to operate normally, thescanner stops working and both the READY and ERROR lights flash. When this happens, the lamp assembly must be replaced.For details, contact your dea...

Note:If the scanner is broken, the carriage may not automatically return tothe home position. If it does not, raise the right of the scanner (whenfacing the underside of the cover) and hold it up until the carriagecomes to rest at the left of the scanner. Then turn the transportationlock screw to th...

Appendix A Technical Specifications Proof Sign-off:K. Nishi _______ D. Grady _______ Scanner Specifications . . . . . . . . . . . . . . . . . . . . . . . A-2 Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3...

Scanner Specifications Scanning Scanner type: Flatbed, color Photoelectric device: Color CCD line sensor Effective pixels: 9760 dots by 13760 pixels at 800 dpi, 100% Document size: 310 mm × 437 mm (12.2 inches × 17.2 inches) A3 or US B size(The reading area can be specified from thesoftware.) Scanni...

Weight: Approx. 20 kg (44.1 lb) Electrical 100 − 120 V model 220 − 240 V model Input voltage range AC 90 to 132 V AC 198 to 264 V Rated frequency 50 to 60 Hz Input frequency 49.5 to 60.5 Hz Rated current 1.2 A 0.7 A Power consumption Approx. 60W, 75 W maximum with optional unit Note:Check the label ...

Environmental Temperature: Operation 5° C to 35° C (41° F to 95° F) Storage –25° C to 60° C (–13° F to 140° F) Humidity: Operation 10% to 80%, without condensation Storage 10% to 85%, without condensation Operating conditions: Ordinary office or home conditions. Extreme dust should be avoided.Operat...

SCSI interface Interface type: ANSI X3T9.2/375R Revision 10L (SCSI) Functions: BUS FREE phaseARBITRATION phaseSELECTION/RESELECTION phaseCOMMAND phase (Logical Unit number is fixed to 0 andcommand link function is not supported.) DATA phase Data in phaseData out phase STATUS phaseMESSAGE phase MESSA...

Initialization Methods The scanner can be initialized (returned to a fixed set of conditions) in thefollowing ways: Hardware initialization * The scanner is turned on. * The scanner receives an INIT signal from the parallel interface: pin 31 goes LOW. * The scanner receives a SCSI Reset signal from ...

Appendix B Contacting Customer Support Proof Sign-off:Nishi _______ Grady _______ For United Kingdom and the Republic of Ireland Users . . . . B-2 For Australian Users . . . . . . . . . . . . . . . . . . . . . . . . B-4 For Singapore Users . . . . . . . . . . . . . . . . . . . . . . . . B-5 For Hong...

If your scanner is not operating properly and you cannot solve yourproblem with the troubleshooting information in this guide and onlinehelp, contact customer support services for assistance. We will be able to help you much more quickly if you are able to give theexact information indicated below. ...

Customer Support Our Customer Support team can provide the following services: ❑ Technical information on installing, configuring, and operating yourEPSON products ❑ Arranging for faulty EPSON products to be repaired within thewarranty period For information on contacting our Customer Support team, ...

World Wide Web If you can connect to the Internet and have a Web Browser, you can accessEPSON’s World Wide Web site at http://www.epson.com. Here you willfind information on the latest EPSON products, software drivers, andanswers to frequently asked questions. For Australian Users EPSON Australia wi...

EPSON Helpdesk EPSON Helpdesk is provided as a final backup to make sure our clientshave access to advice. Operators on the Helpdesk can aid you indiagnosing hardware and software problems. They can also advise youon the latest EPSON products and where the nearest dealer or serviceagent is located. ...

Electronic bulletin board system An electronic bulletin board system (BBS) is also available to obtainscanner information and the latest versions of scanner drivers. You canlog on to the following number for the BBS service: BBS: (852) 2827-4244 Technical Support Hotline You can also contact our tec...

256 Grayscale, 2-1435 mm filmstrip, 3-9 − 10 35 mm slide, 3-84" x 5", 3-12 −1 3 A Accelerator boards, 4-11Adjusting angle, 2-16, 3-15loading position, 3-28 − 29 Adjustment dial, 3-28Adjust pin, 2-9, 2-11, 3-6Auto Document Feeder, 3-16 − 29 installation, 3-17 − 20 unpacking, 3-16 Automatic Ar...