COPYRIGHT NOTICE COPYRIGHT 1995 Gerber Scientific Products, Inc. All Rights Reserved. This document may not be reproduced by any means, in whole or in part, without written permission of the copyright owner. This document is furnished to support the GS750 plus. In consideration of the furnishing of the information contained in this document, the party to whom it is given assumes its custody and control and agrees to the following: 1.
FCC NOTICE This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
TABLE OF CONTENTS INTRODUCTION .............................................................................................................. 1 Description ............................................................................................... 1 Performance.............................................................................................. 1 Convenience ............................................................................................. 2 Support Information ......................
Plotter Speed .................................................................................... 27 Pounce Wheel Holder Installation ................................................... 27 Pounce Wheel Replacement ............................................................ 28 Knife Holder and Blades ........................................................................ 29 Blade Wear ...................................................................................... 29 Blade Damage....................
1 INTRODUCTION Description The GS 750 plus is a state of the art 30-inch (762mm) wide plotter designed for use with the GRAPHIX ADVANTAGE system and other sign design systems. Note: When used with GRAPHIX ADVANTAGE systems, the GS750 plus requires GRAPHIX ADVANTAGE 4.3 or higher. When GS 750 plus is used with other sign design systems, contact the system manufacturer to obtain a driver for the GS750 plus.
2 GS750 plus Convenience GS750 plus has many features that make it easy and convenient to use: ! Accepts any standard Gerber materials in 30-inch (762mm) wide rolls. ! Draws, cuts and pounces up to 28 inches (710mm) high. Using the GRAPHIX ADVANTAGE system Panel feature, the plus can cut text or graphics in strips up to 96 feet long GS750 (29 meters) and 28 inches (710mm) wide. ! Adjustable tool force for uniform cutting with the turn of a dial.
Introduction " 3 If you require assistance installing or operating the GS750 plus plotter, contact your distributor or GSP Field Service Department at 800-828-5406 (in the USA), or fax at 203-645-2448 About This Manual This manual explains the installation and operation of the GS750 plus plotter. It assumes the operator is familiar with the GRAPHIX ADVANTAGE system.
4 GS750 plus Conventions The following conventions are used in this manual: Note: A note contains important information which could affect successful completion of a task. CAUTION: A caution statement contains information which, if not observed, could result in damage to the equipment. WARNING: A warning statement contains information which, if not observed, could result in personal injury.
5 PACKAGE CONTENTS This section lists the contents of the GS750 plus shipping plus plotter, inspect all items container. As you unpack the GS750 for damage that may have occurred during shipping. Report any damage to your dealer at once. Save all packaging materials in case it becomes necessary to transport the plotter at a future date.
6 GS750 plus BOX 3: Paper 50 yds. (45 meters) 20 pound paper for drawing and pouncing BOX 4: Vinyl 10 yds.
7 INSTALLATION Please unpack the plotter boxes and inventory the contents before you begin to assemble the plotter. Follow these plus plotter to any GRAPHIX instructions to install the GS750 plus to other sign design ADVANTAGE. Installation of the GS750 systems is described separately. Note: Should you experience difficulty during installation of the GS750 plus to the GRAPHIX ADVANTAGE system, contact Gerber Field Service Department at 800-828-5406. Plotter Stand Assembly 1.
8 GS750 plus
Installation 9 5. Insert a screw, with a washer, into each of the holes at each side of the plotter stand base. 6. Verify that the alignment between the plotter stand base and the stand assembly is correct, then tighten the screws. 7. Push a tube cap in each open end of the plotter stand base. 8. Install the feet in the bottom of the stand base. If installing the Caster Option, refer to the instructions packed with the casters. 9. Return the plotter stand to its upright position.
10 GS750 plus Mount the Material 1. First insert the material core end plugs (hubs) into the material rolls. To mount a roll of material on a roll support bar, lift the bar to the top of the hole and slide it toward one leg assembly to free the opposite end. 2. After mounting the material on the bar, return the free end to its hole and slide it firmly down into the locked position. Plotter Work Area 1. Place the GS750 plus near the GRAPHIX ADVANTAGE system so that the material feeds toward you.
Installation 11 Note: If a plotter is already installed in the PLOTTER port on the GRAPHIX ADVANTAGE, use the TABLET port to install a second plotter.
12 GS750 plus Power Cords 1. Insert the female connector of the GS750 plus plotter power cord into the socket on the rear panel of the plotter. 2. Connect the power cords for both the GRAPHIX ADVANTAGE plus to the multiple outlet strip included system and the GS750 with the GRAPHIX ADVANTAGE. The strip should be plugged into a standard, grounded electrical outlet (115V +/10% AC, 60 Hz or 230V AC, 50 Hz). 3. Turn power on at the system and the plotter.
13 SET UP After connecting the plotter to the GRAPHIX ADVANTAGE or other sign design system, use the GSP Setup program in plus accessible. GRAPHIX ADVANTAGE to make the GS750 Note: When the GS750 plus is used with sign design systems other than GRAPHIX ADVANTAGE, contact the system manufacturer to obtain a driver for the GS750 plus, installation instructions, and setup information. Plotter Selection Before choosing a plotter close the Plot Spooler.
14 GS750 plus 5. Click on the port to which the plotter is connected (COM1, COM2, COM3, or COM4) in the Ports box. plus appears in the Ready for Plotting list 6. Click on ADD. GS750 plus plotter. box. Your system is now set up to use the GS750 Note: The Default Plotter note in the lower right corner of the dialog box tells you the name of the plotter your jobs will be sent to unless otherwise specified in the Plot program. 7. Click on Continue. The screen will return to the GSP Setup Menu. 8.
Setup 15 Delete Plotters To remove plotters from the system: 1. In the Ready for Plotting box, click on the name of the plotter to be deleted. 2. Click on Delete. Assign Default Plotter A default plotter can be assigned if more than one plotter is connected to the GRAPHIX ADVANTAGE. Note: There must be two or more plotter names in the Ready for Plotting box to select a default plotter.
17 MATERIALS AND TOOLS Materials plus The GS750 uses the same plotting materials as all Gerber plotters. Gerber vinyl products in high performance or intermediate grades are available in translucent, reflective, or metallic finishes and come in a wide range of colors. Also available are direct-cut screenprint stencil, ruby photo film, paint masking material, rubber sandblast stencil material and heat transfer materials.
18 GS750 plus 2. Center the carriage spindle preferably by using the slew keys (see "Front Panel" section) or manually, with certain precautions as outlined here. Be sure that the carriage spindle is not located at either extreme end of its travel and that both ends of the rubber drum can be reached easily. 3. Open the bail arms at either end of the drum by pulling them up and away from the drum. Using the slew (arrow) keys, rotate the drum until three closely spaced pins are visible.
Materials and Tools 19 To feed and align material 1. Feed material under the black cam shaft and over the rubber drum the holes in the material over the sliding sprocket pins first. Match the three closely spaced sprocket pins and holes. 2. Slide the material and the sliding sprocket to reach the fixed sprocket and place the material over these sprocket pins. 3. Center the bail arms over the sprockets.
20 GS750 plus HELPFUL HINTS ! When you change materials, open the bail arms and roll the material back onto the roll. Tape the ends securely to prevent the roll from unraveling. ! Before unrolling vinyl for a job, determine how much material you need. Check the length of the longest line in the job, or the width of an automatically laid out sign or digitized design. Remember that if you are plotting in the Axis Swap mode, you need to consider the height of the job rather than its width.
Materials and Tools 21 Tool Force Dial The tool force dial on the front of the housing indicates the tool force setting and the amount of tool force or pressure, that is applied to the tool during operation. This pressure ensures uniform cuts and pen lines. Tool force can be adjusted by turning the small knob on the end of the tool force housing, as shown in the illustration below. SETTINGS The Plotter User Reference Card at the end of this manual lists approximate tool force settings.
22 GS750 plus ! For drawing, start with a tool force setting between .5 and 1. If your pen does not make a clear dark line, you may wish to increase the tool force setting. ! For pouncing, start with a setting between 5 and 6. ! When cutting regular vinyl in tangential knife mode, try a tool force setting between .5 and 1. ! When cutting regular vinyl in swivel knife mode, set the tool force setting at 1.
23 TOOLS AND TOOL HANDLING Storage For easy access, the pen holder, knife holders, and pounce wheel holder may be removed from the Dial Head tool kit and stored in the tool rack. The tool rack was attached during assembly. Tool Holders For quick identification, each tool holder has a different colored cap. The cap helps lock the tool in place in the carriage spindle during operation. In addition, red sleeves protect tool tips from accidental damage during storage.
24 GS750 plus Pen Holder and Pens The pen holder shipped with a black pen installed. After loading the plotting paper, install the pen holder in the carriage spindle as follows: To install the pen holder 1. Select the pen holder with pen installed from the tool rack molded in the rear cover. 2. A plastic lift washer is used to reduce friction between the tool holder and the lift fork of the carriage spindle during operation. There should be one installed on the pen holder.
Tools and Tool Handling 25 PEN REPLACEMENT Spare pens in blue and red are included in the tool kit. Additional pens are available through a Gerber distributor. To replace a pen 1. Insert a flat-tip screwdriver into the notch at the base of the cone-shaped cap (see below). Pry out the cap. 2. Use the Allen wrench supplied with the tool kit to loosen the hex screw located near the tip of the pen. Remove the pen through the top of the holder. 3. Insert a new pen, tip first, into the top of the holder. 4.
26 GS750 plus 5. Push down on the upper end of the pen until the point just touches the table surface. 6. Use the Allen wrench to tighten the set screw near the tip of the pen. Do not over-tighten the set screw or the pen could be crushed. 7. Replace the cap in the barrel. Pounce Wheel Holder Pouncing is a technique used to create an outline for a sign that will later be hand-painted. Pouncing can also be used to align vinyl letters on a large job.
Tools and Tool Handling 27 OFF-CENTER HOLES The second keyway holds the tool at 11 degrees off-center to the direction of tool travel. Using the pounce wheel in the angled position causes the points to drag slightly as the wheel moves forward. This produces larger, slightly elongated holes suited for heavy or clay-coated paper and for bold dusting applications. PLOTTER SPEED In the straight (aligned) position, the pounce wheel works best at reduced plotter speeds.
28 GS750 plus and 6. Adjust, if necessary, for paper thickness or desired hole size. Reduce plotter speed if pouncing small holes. POUNCE WHEEL REPLACEMENT One pounce wheel supplied is installed in the tool holder, and a spare is included in the tool kit. To replace the pounce wheel 1. Using the Allen wrench from the Tool Kit, remove the hex screw that serves as the wheel's axle. 2. Remove the old wheel. Position the new wheel in the holder. 3.
Tools and Tool Handling 29 Knife Holder and Blades Gerber blades are extremely wear-resistant. In testing, over 10,000 one-inch letters were cut using a single blade before testing was discontinued with the blade still cutting satisfactorily. Other blade manufacturers have attempted, unsuccessfully, to duplicate this cutting precision and durability. Gerber warrants plus only when Gerber blades are cutting quality of the GS750 used.
30 GS750 plus KNIFE HOLDER INSTALLATION The GS750 plus comes two different types of knife holder: ! Swivel Knife - Used to cut all but the thickest materials, such as sandblast stencil, at high speed. ! Tangential Knife - Used to cut all materials, including sandblast stencil. The tangential knife can be used with either 30°, 45° or 60° blades. To install a knife holder 1. Load vinyl or other material. 2. Select the knife holder that matches the knife mode you want to use. 3.
Tools and Tool Handling 31 Suggested Tool Force Settings Recommended Starting Tool Force Tangential Knife Blade GS Plotter Swivel Knife .05-1 30 ° 35° .05-1 30° 35° Screen Print Static Cling .
32 GS750 plus BLADE REPLACEMENT Five carbide knife blades are included with the GS750 plus: ! ! ! ! one installed in the tangential knife holder two tangential knife spares one installed in the swivel knife holder one swivel knife spare Extra blades and special angled blades for sandblast vinyls are available from your Gerber distributor. WARNING: The blade is very sharp. Take care when handling the knife holder and blade. CAUTION: Blades are fragile and can break. Do not use tools to handle new blades.
Tools and Tool Handling 33 To adjust the tangential blade The knife blade holder assembly includes a small metal plate called a shoe, which acts as a cutting depth stop to prevent the knife blade from cutting through the vinyl backing material. If the tool force setting is correct, but the weed does not peel up easily, or letters peel up with the weed, adjust the shoe to expose more of the blade instead of increasing the tool force setting.
34 GS750 plus 2. Turn the eccentric nut by hand, or use a small wrench, to expose more or less of the knife tip. Note: Do NOT use a micrometer or calipers to measure the vertical distance; it may damage the knife blade tip. 3. Change the shoe setting only a bit at a time so that the adjustments are made in a continuous direction, rather than back and forth. 4. Make test cuts until the adjustment is satisfactory. To replace and adjust the swivel knife blade 1.
Tools and Tool Handling 35 To test the swivel knife for proper depth 1. Using a scrap piece of vinyl, trace a cutline by hand with the tool you have adjusted. 2. Weed the test cut. The test cut should weed easily with no cut-through on the material backing. If it does not weed correctly, turn the adjustment shoe clockwise to expose more of the knife. If there is cut-through of the backing, turn counterclockwise to expose less of the blade.
37 OPERATION Power Up When the GS750 plus is turned on, the following sequence occurs: 1. A short beep sounds, the Power light comes on, and the RUN CONT, RUN SING and SWIVEL KNIFE lights blink. plus performs self-check tests, the lights over the 2. As the GS750 RUN and SWIVEL KNIFE keys flash, and an additional beep sounds. 3. When the self-check is complete, the lights blink and a beep sounds. 4. The plotter goes off-line in tangential knife mode. Only the Power light remains on.
38 GS750 plus Front Panel The GS750 plus front panel keys shown below are used to perform all of the following operations: ! Position the carriage and material. ! Put the plotter on-line for drawing, cutting, and pouncing. ! Select single or continuous job processing. ! Select knife mode. ! Initialize the knife tool. ! Access diagnostic modes, as needed. See the Special Diagnostics and Error Conditions sections for more information.
Operation 39 SLEW KEYS Use the left and right slew keys to unroll material before plotting, to position the tool for plotting, and to position the carriage and material between jobs. Press the up or down slew keys to move the carriage between the rear and the front of the plotter. Press the left or right slew keys to rotate the drum and feed material through the plotter or back toward the roll holder. SLOW KEY SLOW Use the SLOW key to access slow slew mode.
40 GS750 plus SWIVEL KNIFE KEY Press the SWIVEL KNIFE key to select knife mode: SWIVEL KNIFE ! When the swivel knife mode is selected, the light over the SWIVEL KNIFE key is on. ! If the tangential knife mode is desired, the light must be off. ! Press SWIVEL KNIFE to turn the light on and off. Use swivel knife mode for most cutting except for demanding material such as sandblast stencil. Use tangential knife mode for cutting thick materials such as sandblast stencil and for pouncing patterns.
Operation 41 RUN SINGLE KEY Plot RUN SINGLE Use RUN SINGLE to plot a single job. This plot mode allows the operator to reposition material between jobs and/or to pen plot using paper before cutting vinyl. RUN SINGLE may be used with either swivel knife mode or tangential knife mode. 1. Press SWIVEL KNIFE to select a knife mode. (For swivel knife mode, the light over the SWIVEL KNIFE key is on. For tangential knife mode, the light is off. Press SWIVEL KNIFE to select the knife mode desired.) 2.
42 GS750 plus Single Plot Exercise 1. Turn on the GS750 plus. Load plotting paper, test the pen manually, install the pen holder, and set the tool force to .5. 2. Using the slew keys, position the carriage spindle approximately 1" from the front edge of the plotting paper. Also, be sure that there are several inches of paper extending past the carriage spindle and to the left of the plotter. 3. Send a plot file to the GS750 plus plotter. 4. Press the RUN SINGLE key to plot the test exercise.
Operation 43 Controlled Stop Use RUN CONT (or RUN SINGLE) to pause plotting and check the current job. To stop a continuous mode plot Press either RUN key. The GS750 plus stops the plot at the next logical break in the program. Do not use slew keys or orientation for the current job will be lost. 1. Press either RUN key to resume plotting at the exact same point. Continuous Plot Exercise 1. Turn on the GS750 plus. Load plotting paper, install the pen holder, and set the tool force to .5. 2.
44 GS750 plus RESET KEY RESET Use the RESET key to stop plotter operation in case of emergency, to clear error signals, and to access Special Diagnostics. To cause an emergency stop Press the RESET key while a job is plotting. The following sequence occurs: 1. GS750 plus operation stops immediately. 2. The current job is cleared. All other jobs in the queue remain intact. 3. The GS750 plus returns to off-line status, as at power-up.
45 SPECIAL DIAGNOSTICS In addition to the self-check tests that are part of the power-up plus plotter can perform other special sequence, the GS750 diagnostics. The steps to access these diagnostics and their functions are outlined below. To access special diagnostics 1. Hold down the RESET key during power-up. 2. When a steady tone sounds, release the RESET key. There will be two beeps followed by three beeps as the self-check tests are completed.
46 GS750 plus Diagnostic Options The following diagnostics are available: ! RS-232 Loop Back – Press the up arrow key to access. Use to check internal workings of the communications hardware. Beeps indicate a communications error. (A special loop-back test part is needed for this test. See your Gerber distributor.) ! X,Y, Z Axes Lock − Press the right arrow key to access. Use to check X, Y, Z axes operation. Error code 7 will occur if these axes are locked longer than 30 minutes.
Special Diagnostics 47 WAGON WHEEL TEST PLOT To plot the Wagon Wheel test plot 1. Load plotting paper and install the pen holder. 2. Press left arrow key to access diagnostic. 3. Press RUN SINGLE to plot once or RUN CONT to plot continuously. 4. Compare the test plot to the illustration below. If the plot is different, contact Gerber Field Service.
48 GS750 plus SQUARE/CIRCLE TEST PLOT To plot the Square/Circle test plot 1. Load vinyl and install the knife holder. 2. Press SLOW key to access diagnostic. 3. Press RUN SINGLE to plot once or RUN CONT to plot continuously. 4. Compare the test plot to the illustration below. If the plot is different, contact Gerber Field Service.
49 ERROR CONDITIONS The GS750 plus is programmed to detect several mechanical/electrical error conditions at power-up or during operation. When an error condition occurs, the plotter will turn off power to the stepper motors, flash the RUN lights, and sound a steady tone. To determine the error condition that stopped plotter operation, follow these steps. 1. Press the RESET key to clear the error signal (flashing lights and steady tone). 2. Press the RUN SINGLE key to display the error code number.
50 GS750 plus ERROR CODES The error code numbers and suggested operator responses are listed below. Error code numbers are also listed on the User Reference Card. Error Number Description Operator Response 1 Program checksum failure Try power up again. 2 RAM memory failure Try power up again. 3 RS-232 test failure Try power up again. 4 Illegal plot data command Check plot data; resubmit job. 5 Corrupt data Check plot data; resubmit job. 6 Buffer overflow Contact Gerber Field Service.
51 MAINTENANCE This section includes instructions for routine cleaning and lubrication, fuse replacement, and adjustments to keep the GS750 plus plotter in good working order. Cleaning and Lubrication Routine cleaning and lubrication should be done monthly or after every 160 hours of use, whichever occurs first. Isopropyl alcohol should be used to clean dirty parts. Note: When alcohol is used, lubricate the parts immediately to prevent corrosion.
52 GS750 plus CARRIAGE AND BALL BUSHING 1. Use a lint-free cloth and alcohol to clean dust or debris from the front way, drive shaft, cam shaft and theta shaft. Rotate the cam shaft and theta shaft (the front way does not turn) and move the carriage spindle for access to the entire length of these shafts. 2. Apply a light coat of oil with a lint-free cloth to the front way, cam shaft, right angle way, and theta shaft.
Maintenance 53 SPROCKETS AND BAIL ARMS 1. Inspect the teeth of the drum sprockets for adhesive buildup from the use of vinyl films. 2. Use a small stiff brush (such as a toothbrush) dipped in alcohol to clean the sprockets. 3. Also clean and oil the sliding sprocket end of the drum shaft and both sliding bail arm screws. Do not oil excessively.
54 GS750 plus Fuse Replacement Two spare fuses are included with the GS750 plus Plotter. The fuse holder is located between the on/off switch and the power cord connector on the rear panel of the plotter. To replace the fuse WARNING: Turn off power at the plotter and the system and disconnect from the power supply. 1. Unscrew and remove the RS-232 cable from the rear panel of plus the GS750 . 2. Remove the plotter power cord from the socket. 3. Insert a flat-tip screwdriver into the round, notched cover.
55 PLOTTER ADJUSTMENTS The section contains a troubleshooting guide to help identify possible error conditions according to the symptoms displayed and the recommended adjustment procedures. It also contains a brief description of plotter adjustment problems that should be handled by contacting Gerber Field Service Department at 800-828-5406. Note: Gerber warranties do not cover unauthorized repair. Some service procedures require delicate adjustment of plotter parts.
56 GS750 plus LEFT COVER 1. Remove the plotter cover from the left side of the plotter (opposite the front panel end) by removing the two Phillips head screws which hold the cover in place (see steps 2 and 3). 2. Remove the screw located in the center of the top edge of the plotter left end plate. 3. Remove the screw from the center of the bottom edge of the plotter end plate (located between the screws for the plotter stand assembly). Reach up from inside the plotter stand to remove this screw. 4.
Plotter Adjustments 57 Troubleshooting Guide This chart of symptoms is designed to help identify the possible problem and the probable adjustment procedure. plus plotter and GRAPHIX CAUTION: Turn off GS750 ADVANTAGE or other sign design system before checking connections or attempting to make any adjustments, unless otherwise directed. Symptom No power Poor Performance Plotter Error Inconsistent Tool/ Material Contact Jagged or Serrated Cutting Edges Thick and Thin Strokes Recommended Procedure 1.
58 GS750 plus Z Axis (Tool Height) Adjustment SYMPTOMS ! ! ! The tool does not touch the material or touches only between characters. The knife does not cut deeply enough. The tool height changes in the middle of a job. OBJECTIVE To set the height of the lift fork for consistent contact of tool holder with material. ADJUSTMENT PROCEDURE 1. Adjust the pen using the pen height gauge. (See "Pen Holder and Pens" section). 2. Install the pen holder in the carriage spindle. 3. Remove right side cover.
Plotter Adjustments 59 5. Turn on the plotter. 6. Rotate the cam shaft by hand until the lift fork reaches its highest point. 7. Tighten the pulley clamp. 8. Remove the carriage cover over the tool force housing. 9. Locate the tool height fine adjustment screw on the center of the lifter assembly under the tool force arm. 10. Raise or lower the lifter fork by turning the fine adjustment screw until the top of the lift fork is approximately 17/64" (6.7 mm) from the spindle assembly.
60 GS750 plus 11. Reinstall the cover. 12. Load paper in the plotter. Run a multiple line test plot. 13. Turn off power at the plotter. 14. Power-up the plotter while holding the RESET key. Load paper and install pen holder. 15. Press the left arrow key to access the Wagon Wheel Test Plot. Press either Run key to plot. Inspect your test plot by comparing to the Wagon Wheel Test Plot illustration. 16. Turn off power at the plotter. 17. Power-up the plotter while holding the RESET key.
Plotter Adjustments 61 Theta Axis (Tool Rotation) Adjustment SYMPTOMS ! ! ! Letters have jagged edges. Letters have closure problems of less than 1/32". The tool loses position in the middle of a job. OBJECTIVE To center lift fork over carriage spindle bore; to align tool holder in carriage spindle. ADJUSTMENT PROCEDURE 1. Remove any tool from the carriage spindle. 2. Remove the plotter end cover from the right (front panel) end of the plotter. (See Cover Removal Section.
62 GS750 plus 3. Locate the theta motor collar clamp, which is directly behind the theta motor. Rotate the rear way to find the screw in the motor collar clamp, and use the Allen wrench to ensure that the screw in the collar clamp is tightened securely. 4. Then hold the RESET key down and turn on the plotter power. Access the Theta Axis Lock diagnostic by pressing the down arrow key. This locks the theta axis.
Plotter Adjustments 63 5. After the spindle initializes, note the position of the slot or keyway in the side of the tool holder. Face the front of the plotter, the spindle pin should be in the "nine o'clock" position. If the pin is aligned correctly, proceed to a test cut, step 12. If the spindle pin is not aligned correctly, go to the next step. 6. Locate the rear way collar clamp. Use an Allen wrench to loosen the collar clamp. Be careful not to move the black timing belt. 7.
64 GS750 plus 10. When the blade is correctly adjusted, power up the plotter while holding the RESET key. Load paper and install pen holder. 11. Press the left arrow key to access the Wagon Wheel Test Plot. Press either Run key to plot. Compare your test plot to the Wagon Wheel Test Plot. 12. Turn off power to the plotter. Power-up the plotter while holding the RESET key. Load vinyl and install knife holder. 13. Press SLOW key to access the Square/Circle Test Plot. Press either Run key to plot.
Plotter Adjustments 65 X Axis Backlash Adjustment SYMPTOMS Text cut in AXIS SWAP mode has closure problems. OBJECTIVE To adjust the tension of the X axis gear to produce good letter quality in AXIS SWAP mode. ADJUSTMENT PROCEDURE 1. Turn the plotter power off. 2. Remove all tools and material from the plotter. 3. Open the bail arms. 4. Remove the cover from the left end of the plotter. (See the Cover Removal Section.) 5. Hold the RESET key during power-up.
66 GS750 plus 6. Locate the X axis gear and the X motor pinion which are directly behind the X motor. These two gears are meshed together. Gently push back and forth on the drum in the direction the material normally moves. Notice if the X axis gear moves while the pinion remains stationary. If the pinion remains stationary (i.e., if there is backlash), proceed to step 7. If the pinion moves with the X axis gear (i.e., if there is no backlash), proceed to the section for Y Axis Backlash Adjustment.
Plotter Adjustments 67 7. If the X motor pinion remains stationary (i.e., if there is backlash), locate the X motor mounting screws (Phillips head screws) which hold the X motor against the motor bracket on the side plate. Loosen these screws. 8. Apply light pressure to the motor to tighten the mesh of the X axis gear and the X motor pinion. CAUTION: Forcing the X axis gear and X motor pinion to mesh too tightly can cause the X axis gear to wear prematurely.
68 GS750 plus Y Axis Backlash Adjustment SYMPTOMS Text cut in AXIS SWAP mode has closure problems. OBJECTIVE To adjust the mesh of the jack shaft gear with the Y motor pinion to produce good letter quality in AXIS SWAP mode. ADJUSTMENT PROCEDURE 1. Turn the plotter power off. 2. Remove all tools and material from the plotter. 3. Open the bail arms. 4. Remove the cover from the left end of the plotter. (See "Cover Removal" section). 5. Hold the RESET key during power-up.
Plotter Adjustments 69 6. Locate the jackshaft gear and the Y motor pinion. These two gears are meshed together. Gently attempt to rotate the jackshaft gear. With one finger on the motor pinion, notice if the jackshaft gear moves while the pinion remains stationary. If the pinion moves with the jackshaft gear (i.e., if there is no backlash), no adjustment is necessary. 7. If the Y motor pinion remains stationary (i.e.
70 GS750 plus 11. Replace the cover. 12. Load vinyl in the plotter, install the knife holder and cut a test plot. 13. If symptoms persist, return to step 1.
GS750 plus PLOTTER USER REFERENCE CARD KEY/FUNCTION SWIVEL KNIFE Key INIT KNIFE Key DESCRIPTION Press the SWIVEL KNIFE key to select knife mode. When the swivel knife mode is selected, the light over the SWIVEL KNIFE key is on. If the tangential knife mode is desired, the light must be off. Use the INIT KNIFE key to initialize the swivel knife so that the blade faces 0°. Press the INIT KNIFE key after loading the swivel knife and selecting swivel knife mode.
GS750 plus PLOTTER ERROR CODES ERROR CODE 1 2 3 4 5 6 7 DESCRIPTION OPERATOR RESPONSE Program checksum failure RAM memory failure RS-232 test failure Illegal plot data command Corrupt data Buffer overflow UART error Try power up again. Try power up again. Try power up again. Check plot data; resubmit job. Check plot data; resubmit job. Call Gerber Field Service. Only occurs as part of self-test; try power up again. Power up again while holding down the RESET key Turn off the system; check connectors.
75 INDEX A Arrow keys ......................................... 41 B Bail arms............................................. 55 Beep.................................................... 46 Blade adjustment .................................... 35 angle............................................. 23 damage ......................................... 31 depth............................................. 37 replacement .................................. 34 replacement - swivel .................... 36 wear.......
76 Index assign default ............................... 15 deleting......................................... 15 installation...................................... 7 pin connectors .............................. 10 selection ....................................... 13 work area...................................... 10 Pounce wheel...................................... 29 installation.................................... 29 tool force setting .......................... 30 Pouncing align holes .................
77 P57348A Rev A
