K Service Source Apple Multiple Scan 17 Display
K Service Source Basics Apple Multiple Scan 17 Display
Basics EEPROM Settings - 1 EEPROM Settings Caution: To prevent data loss or corruption, always save EEPROM settings before you replace the microprocessor board. (See next page.) See Troubleshooting for instructions on saving the EEPROM settings from the old microprocessor board and restoring the settings on the new microprocessor board. If the settings are lost before they can be written to the new EEPROM, the display will be impossible to repair, and the whole display will need to be replaced.
Basics EEPROM Settings - 2 Microprocessor Board
K Service Source Specifications Apple Multiple Scan 17 Display
Specifications Characteristics - 1 Characteristics Picture Tube Screen Resolution Scan Rates Cable Connector 17-in. diagonal Trinitron CRT (16.1-in. viewable image) Multiple scan Bonded glass panel with antiglare/antistatic multilayer coating 640x480, 800x600, 832x624, or 1024x768 0.
Specifications Input Signals System Requirements Characteristics - 2 Video: red, green, and blue analog signals; RS-343A standard;.714 V peak to peak; positive going Sync on green: RS-343A compatible level;.
Specifications Controls and Ports - 3 Controls and Ports User Controls I/O Ports Front panel: power, reset, and control buttons; brightness and contrast controls Additional controls available using the command button: horizontal and vertical shift, horizontal and vertical size, rotation, horizontal and vertical convergence, and color temperature Automatic degauss at power-on; manual degauss by turning power switch off, then on (capable of full degauss after monitor is turned off for 20 minutes or more)
Specifications Physical and Electrical - 4 Physical and Electrical Power Supply Size and Weight Universal power supply Voltage: 90–132 and 198–260 VAC, self-configuring Frequency: 47–63 Hz Power: 150 W maximum Height: 16.5 in. (424 mm) Width: 15.8 in. (405 mm) Depth: 17.6 in. (452.3 mm) Weight: 50.0 lb. (22.
Specifications Monitor Stand Physical and Electrical - 5 Built-in, tilt-and-swivel stand Three ADB ports (two ADB ports are in the front of the stand and one ADB port is at the rear of the stand) Sound-in and sound-out ports (to the CPU) at the rear of the base Microphone input and speaker/headphone output ports at the front of the base
Specifications Environmental - 6 Environmental Temperature Altitude Humidity Power Savings Feature Operating: 50°F–104°F (10°C–40°C) Storage: 32°F –140°F (0°C–60°C) Shipping: -4°F–140°F (-40°C–60°C) Operating: to 10,000 ft. (1,067 m) Shipping: to 35,000 ft.
K Service Source Troubleshooting Apple Multiple Scan 17 Display
Troubleshooting General - 1 General The Symptom Charts included in this chapter will help you diagnose specific symptoms related to your product. Because cures are listed on the charts in the order of most likely solution, try the first cure first. Verify whether or not the product continues to exhibit the symptom. If the symptom persists, try the next cure. (Note: If you have replaced a module, reinstall the original module before you proceed to the next cure.
Troubleshooting First Checklist - 2 First Checklist Important: 54% of the Apple Multiple Scan 17 Display modules returned for repair are found to be fully operational. Read this checklist before you return a module. Prevent needless module replacement and unnecessary time delays. The Apple Multiple Scan 17 Display is not fully compatible with all Macintosh computers and PowerBooks.
Troubleshooting First Checklist - 3 The CRT raster will not always resemble a perfect rectangle. CRT tolerances allow for some distortion. Additional distortion can be caused by magnetized metal objects (desks, file cabinets, etc.). Move the unit to a different location if you notice raster bowing or bent raster edges. Jitter, faint lines, or screen movement can be caused by external interference such as electronic devices and fluorescent lights.
Troubleshooting First Checklist - 4 A misadjusted screen can mimic the symptoms of deflection board or CRT failures. By performing the adjustment procedures, you might determine if one or more of the adjustments is the cause of the problem. CRTs rarely fail. Needless CRT replacements can be prevented by checking display adjustments, checking the possibility of other defective modules, and accepting small imperfections in screen display.
Troubleshooting Display Setting Restoration/Connect the Hardware - 5 Display Setting Restoration Each Multiple Scan 17 Display has an EEPROM (located on the microprocessor controller board) that contains adjustment information specific to that monitor. Before you replace the microprocessor board, save this EEPROM information. Use MacTest Pro Display Setting Restore Utility to preserve the monitor adjustment settings.
Troubleshooting Display Setting Restoration/Connect the Hardware - 6 must be turned off). Also connect a power cable to the display. Advantage: You do not have to shut down the host computer or quit MacTest Pro to complete the repair. Disadvantage: This method requires a separate host computer (with display). 2 Connect the display as usual, using a video cable and power cable. Also, connect a serial cable (MINI DIN-8) between the display and either the modem or printer port on the computer.
Troubleshooting Display Setting Restoration/Save the EEPROM Information - 7 Another disadvantage is that after creating the data file from the old EEPROM, you must quit MacTest Pro and shut down the computer to install the new EEPROM. Save the EEPROM Information To save information from the old EEPROM, create a data file: 1 2 3 4 Start MacTest Pro. Choose “Apple Multiple Scan 17 Display.” Select “Test.” Click “Create File.
Troubleshooting Display Setting Restoration/Restore the EEPROM Information After the new microprocessor board is installed, the new EEPROM will have default settings that allow you to read the display, but with difficulty. When the settings from the old EEPROM are transferred to the new EEPROM, the display should be clear and the last color temperature mode chosen restored. Restore the EEPROM Information To download the saved adjustment information to the new EEPROM, 1 2 3 4 Start MacTest Pro.
Troubleshooting Display Setting Restoration - 9 Caution: Make certain that you are aware of the following important information about the EEPROM data file. If data is lost or corrupted, you will have to return the display to Apple for repair. • Make sure that the data in the saved file is written back to the display used to create the file. Each display is unique, so writing the wrong data to a display may cause severe adjustment problems.
Troubleshooting CRT - 10 CRT If the monitor shuts down shortly after powering up, follow this procedure to determine if the CRT is defective: 1 Refer to Take Apart to remove the monitor stand, remove the rear cover, discharge the CRT, remove the EMI shield. 2 With the power off, insert a nonconductive shield (such as a strip of plastic or cardboard) between the CRT/video board and the main deflection board to shield both boards from potential shorts.
Troubleshooting CRT - 11 5 6 7 Rest the CRT/video board on the nonconductive shield. Connect the monitor to a computer. Plug in the power cable and turn on the monitor. • If the power indicator light stays on, the CRT is defective. • If the monitor shuts down immediately or after a few seconds, replace the main deflection board.
Troubleshooting Symptom Charts/Raster - 12 Symptom Charts Raster No raster; power indicator light on 1 Raster edges have color blotches when displaying an allwhite screen 1 2 2 Ensure monitor’s video cable is properly connected to computer or video card in the computer. Replace main deflection board. Degauss monitor with an external degaussing coil. Move monitor to different location and repeat degaussing procedure. Note: This symptom is caused by strong magnetic fields in the environment.
Troubleshooting Symptom Charts/Raster (Continued) - 13 Raster Oversized raster; menu bar might be partially cut off; adjustments have no effect on raster (Continued) Replace main deflection board, and without disconnecting microprocessor board, check its revision level. Important: On the component side of the board, look for a white mark on the upper left corner and a 9-digit number that ends in -11, -12, or -13. If you see “-12” and a white mark or “-13” and no white mark, you have an updated board.
Troubleshooting Symptom Charts/Power - 14 Power No power; power indicator light off 1 2 3 Monitor shuts down 1 2 3 4 Check that power cord is properly connected to monitor and live power source. Ensure monitor’s video cable is properly connected to computer or video card in the computer. Replace main deflection board. Ensure monitor’s video cable is properly connected to computer or video card in the computer. Determine if CRT is the cause by following the “CRT” procedure in this chapter.
Troubleshooting Symptom Charts/Indicator Lights - 15 Indicator Lights Convergence indicator light blinks or stays on; power indicator light might also blink Replace microprocessor board after downloading settings as described in “Display Setting Restoration” in this chapter. Caution: To prevent data loss or corruption, always save EEPROM settings before you replace the microprocessor board.
Troubleshooting Symptom Charts/Indicator Lights (Continued) - 16 Indicator Lights Rotation indicator light blinks or stays on; power indicator light might also blink (Continued) Replace main deflection board.
Troubleshooting Symptom Charts/Indicator Lights (Continued) - 17 Indicator Lights Size indicator light blinks or stays on; power indicator light might also blink 1 2 3 (Continued) Replace main deflection board. Replace CRT/video board. Replace microprocessor board after downloading settings as described in “Display Setting Restoration” in this chapter. Caution: To prevent data loss or corruption, always save EEPROM settings before you replace the microprocessor board.
Troubleshooting Symptom Charts/Indicator Lights (Continued) - 18 Indicator Lights Centering indicator light blinks or stays on; power indicator light might also blink 1 2 (Continued) Replace main deflection board. Replace microprocessor board after downloading settings as described in “Display Setting Restoration” in this chapter. Caution: To prevent data loss or corruption, always save EEPROM settings before you replace the microprocessor board.
Troubleshooting Symptom Charts/Miscellaneous - 19 Miscellaneous Unable to download saved adjustment settings to new microprocessor board 1 Picture has vertical jitter 1 Move monitor to different location and see if symptom persists. Note: This symptom is often caused by electromagnetic interference (electronic devices, fluorescent lights, power lines, etc.). Refer to “First Checklist” in this chapter.
Troubleshooting Symptom Charts/Miscellaneous (Continued) - 20 Miscellaneous Thin horizontal lines on screen (Continued) Displays larger than 15 inches with tron-style CRTs typically have two wires, each about one-quarter to one-third of the way from the top and bottom of the display image. These supporting wires, which are thinner than a human hair, stabilize the aperture grill against shocks. The lines are common to all tronstyle displays and are not screen defects.
K Service Source Take Apart Apple Multiple Scan 17 Display
Take Apart Monitor Stand - 1 Monitor Stand No preliminary steps are required before you begin this procedure.
Take Apart Monitor Stand - 2 1 Screw 2 With the monitor facedown on a protective pad, swivel the base to access the monitor stand mounting screw. Remove the mounting screw.
Take Apart Monitor Stand - 3 3 4 Lift the monitor stand out of the bezel. If you do not plan to work on the monitor, return the monitor to an upright position on the protective pad.
Take Apart Monitor Stand Cables - 4 Monitor Stand Cables Sound-In Connector Before you begin, remove the monitor stand. Note: The monitor stand includes sound-in and sound-out cables and an ADB speaker board. You can replace the monitor stand as an assembly, or you can replace its parts individually.
Take Apart Screw Monitor Stand Cables - 5 Tilt Platform Washer 1 Remove the mounting plate (with washer) and separate the tilt platform from the swivel platform. Replacement Note: When replacing the tilt and swivel platforms, align the arrows etched on the platforms with the front of the base.
Take Apart Monitor Stand Cables - 6 Bottom of Base 2 Screw Tab 3 Tab Screw Tab Screw Tab Sound-Out Connector Top of Base Remove the three screws, push out the four release tabs, and separate the bottom from the top of the base. Place the bottom of the base on the protective pad.
Take Apart Monitor Stand Cables - 7 Mounting Brackets 4 ADB Speaker Board Sound-In Connector 5 6 Mounting Brackets Sound Cables Disconnect the sound-in and sound-out cables from the ADB speaker board. Remove the ADB speaker board (if defective). Unlace the defective cable(s) from the bottom of the base and remove the cables from the plastic mounting bracket(s).
Take Apart Rear Cover - 8 Rear Cover Before you begin, remove the monitor stand. This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety in Bulletins/Safety.
Take Apart Rear Cover - 9 Video Cable 1 2 Rear Cover With the monitor facedown on a protective pad, remove the six case screws and pull the cover off the chassis. Route the video cable through the cover.
Take Apart EMI Shield - 10 EMI Shield EMI Shield Before you begin, • Remove the monitor stand • Remove the rear cover • Discharge the CRT This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety in Bulletins/Safety. ±Warning: Warning: Never use a grounding wriststrap until after discharging the CRT.
Take Apart EMI Shield - 11 Note: The EMI shield is not replaceable. 6 5 1 1 2 4 3 Remove the six screws from the shield.
Take Apart EMI Shield - 12 2 3 Slide the shield toward the back of the monitor. Bow the sides of the shield out and lift off the shield.
Take Apart CRT/Video Board - 13 CRT/Video Board CRT/Video Board Before you begin, • Remove the monitor stand • Remove the rear cover • Discharge the CRT • Remove the EMI shield Warning: This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety in Bulletins/Safety.
Take Apart CRT/Video Board - 14 CRT/Video Board Shield Ground Strap Flyback Transformer Cable Ties Never use a grounding wriststrap until after discharging the CRT. ±Warning: Caution: When removing the ground strap and flyback transformer cable from the CRT/video board, avoid excessive pressure on the neck of the CRT. 1 2 Disconnect the ground strap from the front of the CRT/video board shield. Disconnect the flyback transformer cable from the CRT/video board.
Take Apart CRT/Video Board - 15 CRT/Video Board Shield Ground Strap Flyback Transformer Cable Ties 3 Remove the flyback transformer cable from the cable ties on the CRT/video board shield.
Take Apart CRT/Video Board - 16 4 CN307 CN303 CN304 Caution: When disconnecting the following cables from the CRT/video board, avoid excessive pressure on the neck of the CRT.
Take Apart CRT/Video Board - 17 5 CN305 CN301 Caution: When disconnecting the following cables from the CRT/video board, avoid excessive pressure on the neck of the CRT.
Take Apart CRT/Video Board - 18 6 Caution: When removing the video cable clip screw from the CRT/video board, be careful not to apply excessive pressure to the neck of the CRT. Remove the screw securing the video cable clip to the CRT/video board shield.
Take Apart CRT/Video Board - 19 7 NTC Connector Screw CRT/Video Board 8 Caution: Twisting, bending, or applying force to the CRT/video board could damage the neck of the CRT. Be sure to pull the CRT/video board straight off the CRT. Disconnect the NTC connector. Loosen the mounting screw and pull the CRT/ video board straight off the neck of the CRT.
Take Apart Video Cable - 20 Video Cable Before you begin, • Remove the monitor stand • Remove the rear cover • Discharge the CRT • Remove the EMI shield This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety in Bulletins/Safety. ±Warning: Never use a grounding wriststrap until after discharging the CRT.
Take Apart Video Cable - 21 1 CN307 CRT/Video Board Caution: When removing the video cable from the CRT/ video board, be careful to avoid excessive pressure on the neck of the CRT. Disconnect the 9-wire video cable from the CRT/video board (CN307).
Take Apart Video Cable - 22 2 Cable Brace Press down on the plastic latch and push the top of the cable brace out of the chassis.
Take Apart Video Cable - 23 3 4 Cable Mounting Screw Cable Mounting Screw Video Cable Remove the two cable mounting screws. Remove the video cable.
Take Apart Serial I/O Board - 24 Serial I/O Board Before you begin, • Remove the monitor stand • Remove the rear cover • Discharge the CRT • Remove the EMI shield Warning: This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety in Bulletins/Safety. ± Never use a grounding wriststrap until after discharging the CRT.
Take Apart Serial I/O Board - 25 1 2 5-Pin Serial Communications Cable 3 Serial I/O Board Screws Disconnect the 5-pin serial communications cable from the serial I/O board. Remove the two screws securing the serial I/O board to the rear panel. Lift out the serial I/O board.
Take Apart AC Inlet - 26 AC Inlet Before you begin, • Remove the monitor stand • Remove the rear cover • Discharge the CRT • Remove the EMI shield Warning: This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety in Bulletins/Safety. ± Never use a grounding wriststrap until after discharging the CRT.
Take Apart AC Inlet - 27 1 Ground Wire 2 Screw CN603 Remove the screw (with captive lockwasher) and the inlet assembly ground wire from the chassis. Disconnect the 2-wire power inlet cable from connector CN603 on the main deflection board.
Take Apart AC Inlet - 28 3 4 Remove the two screws securing the AC inlet assembly to the chassis. Pull the inlet assembly through the hole in the chassis. Replacement Note: When replacing the AC inlet assembly, insert the power inlet cable and ground wire through the chassis mounting hole before inserting the circuit card end of the AC inlet assembly.
Take Apart Microprocessor Board - 29 Microprocessor Board Before you begin, • Save EEPROM settings • Remove the monitor stand • Remove the rear cover • Discharge the CRT • Remove the EMI shield Important: Before you replace the microprocessor board, save the EEPROM settings. See Troubleshooting for instructions.
Take Apart Microprocessor Board - 30 This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety in Bulletins/Safety. ±Warning: Warning: Never use a grounding wriststrap until after discharging the CRT.
Take Apart Microprocessor Board - 31 Important: Make sure you save the EEPROM settings before replacing the microprocessor board.
Take Apart Microprocessor Board - 32 2 Clip Release the plastic clip at the top of the microprocessor board.
Take Apart Microprocessor Board - 33 3 4 Microprocessor Board Connector Pivot the microprocessor board so it lies flat. Pull the microprocessor board out from its mating connector and remove the board.
Take Apart Main Deflection Board - 34 Main Deflection Board Main Deflection Board Before you begin, • Remove the monitor stand • Remove the rear cover • Discharge the CRT • Disconnect the anode cap • Remove the EMI shield • Remove the microprocessor board Important: If replacing the microprocessor board as well as the main deflection board, save the EEPROM settings before replacement.
Take Apart Main Deflection Board - 35 Flyback Transformer Cable This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety in Bulletins/Safety. ±Warning: Never use a grounding wriststrap until after discharging the CRT.
Take Apart Main Deflection Board - 36 Flyback Transformer Cable 2 Cable Ties 3 CN505 CN601 CN603 Caution: When removing the flyback transformer cable from the CRT/video board, avoid pressure on the neck of the CRT. Disconnect the flyback transformer cable from the CRT/video board. Remove the flyback transformer cable from the cable ties on the CRT/video board shield.
Take Apart Main Deflection Board - 37 4 CN1400 Serial I/O Board Disconnect connector CN1400 from the serial I/O board.
Take Apart Main Deflection Board - 38 5 CN307 Video Cable Clip CRT/Video Board 6 Disconnect the 9-wire video cable (CN307) from the CRT/video board. Remove the screw securing the video cable clip to the CRT/video board shield.
Take Apart Main Deflection Board - 39 7 Flyback Transformer Cable Caution: When removing the ground cable from the CRT/ video board, avoid excessive pressure on the neck of the CRT. Disconnect the 1-wire ground cable (CN301) from the CRT/video board.
Take Apart Main Deflection Board - 40 8 Main Deflection Board Screw 9 Screw With the monitor facedown on a protective pad, remove the four screws securing the main deflection board to the housing. Note: Only two screws are shown. The other two screws are on the right side of the main deflection board. Lift out the main deflection board.
Take Apart Main Deflection Board - 41 10 Remove the two screws securing the rear panel to the bottom chassis. 11 Remove the rear panel.
Take Apart Control Panel Board - 42 Control Panel Board Before you begin, • Remove the monitor stand • Remove the rear cover • Discharge the CRT • Disconnect the anode cap • Remove the EMI shield • Remove the main deflection board This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety in Bulletins/Safety.
Take Apart Control Panel Board - 43 Never use a grounding wriststrap until after discharging the CRT. ±Warning: 1 2 Screw Control Panel Board Screw Remove the two screws securing the control panel board support to the front bezel. Lift out the control panel board and support.
Take Apart Control Panel Board - 44 3 CN801 Latch Latch Latch 4 Latch Disconnect the control panel cable from the control panel board (CN801). Simultaneously, release each of the four plastic latches at the rear of the control panel board and lift the board.
K Service Source Adjustments Apple Multiple Scan 17 Display
Adjustments Brightness and Contrast - 1 Brightness and Contrast No preliminary steps are required before you begin this procedure.
Adjustments Brightness and Contrast - 2 Brightness 1 2 Brightness Controls Press the up button to increase the brightness. Press the down button to decrease the brightness.
Adjustments Brightness and Contrast - 3 Contrast 1 2 Contrast Controls Press the left button to decrease the contrast. Press the right button to increase the contrast.
Adjustments Geometry - 4 Geometry No preliminary steps are required before you begin this procedure.
Adjustments Geometry - 5 Vertical Center Crosshatch 1 2 Centering Indicator Light Select Button Brightness Controls Press the select button to turn on the centering indicator light. Press the up or down button on the brightness controls to move the center of the picture up or down.
Adjustments Geometry - 6 Horizontal Center Crosshatch 1 2 Centering Indicator Light Select Button Contrast Controls Press the select button to turn on the centering indicator light. Press the left or right button on the contrast controls to move the center of the picture left or right.
Adjustments Geometry - 7 Vertical Size Crosshatch 1 2 Size Indicator Light Select Button Brightness Controls Press the select button repeatedly until the size indicator light goes on. Press the up or down button on the brightness controls to increase or decrease the size of the picture.
Adjustments Geometry - 8 Horizontal Size Crosshatch 1 2 Size Indicator Light Select Button Contrast Controls Press the select button repeatedly until the size indicator light goes on. Press the left or right button on the contrast controls to decrease or increase the size of the picture.
Adjustments Geometry - 9 Rotation Crosshatch 1 2 3 Rotation Indicator Light Select Button Brightness Controls Ê Press the select button repeatedly until the rotation indicator light goes on. Press the up button on the brightness controls to tilt the picture clockwise. Press the down button on the brightness controls to tilt the picture counterclockwise.
Adjustments Geometry - 10 Shape Crosshatch 1 2 3 Rotation Indicator Light Select Button Contrast Controls Press the select button repeatedly until the rotation indicator light goes on. Press the left button on the contrast controls to bring in the sides of the picture. Press the right button on the contrast controls to expand the sides of the picture.
Adjustments Convergence - 11 Convergence No preliminary steps are required before you begin this procedure. Note: When the convergence is set properly, the picture is crisp and clear.
Adjustments Convergence - 12 Vertical Convergence Crosshatch 1 2 Convergence Indicator Light 3 Select Button Brightness Controls Press the select button repeatedly until the convergence indicator light goes on. Press the up button on the brightness controls to move the red signal up and the blue signal down. Press the down button on the brightness controls to move the red signal down and the blue signal up.
Adjustments Convergence - 13 Horizontal Convergence Crosshatch 1 2 Convergence Indicator Light 3 Select Button Contrast Controls Press the select button repeatedly until the convergence indicator light goes on. Press the left button on the contrast controls to move the red signal to the left and the blue signal to the right. Press the right button on the contrast controls to move the red signal to the right and the blue signal to the left.
Adjustments Color Temperature - 14 Color Temperature No preliminary steps are required before you begin this procedure. Front Panel Color temperature refers to the intensity of the red/ green/blue signals sent to the monitor.
Adjustments Color Temperature - 15 Color temperature can be changed to accommodate preference or application specifications.
Adjustments Color Temperature - 16 1 Light Color Temperature Indicator Select Button Contrast Controls Press the select button repeatedly until the color temperature indicator light goes on.
Adjustments Color Temperature - 17 2 Light 3 Color Temperature Indicator Select Button Contrast Controls Press the left button on the contrast controls to decrease the color temperature. Press the right button on the contrast controls to increase the color temperature.
Adjustments Factory Settings - 18 Factory Settings No preliminary steps are required before you begin this procedure. Front Panel Important: The controls for the monitor are set at the factory. To fine-tune and adjust the picture, use the front panel controls. The monitor will use your settings each time the computer is turned on. Use the recall function to return to factory settings.
Adjustments Factory Settings - 19 Recall Note: You can reset brightness and contrast to their factory levels; however, you cannot reset one or the other. You must reset both controls. Use a straightened paper clip to push in the reset button.
Adjustments Factory Settings - 20 Reset a Specific Control 1 Picture Control Indicator Lights Reset Button Select Button 2 Press the select button repeatedly until the indicator light of the picture control you want to reset (vertical or horizontal center, convergence, or color temperature) goes on. Use a straightened paper clip to push in the reset button. The selected picture control is reset to its original level.
Adjustments Factory Settings - 21 Reset All Controls While holding down the control button, push in the reset button with a straightened paper clip. Control Button Reset Button All picture controls are reset to their factory levels.
K Service Source Exploded View Apple Multiple Scan 17 Display
Exploded View 1 EMI Shield (Not Offered) 922-0742 Bezel 922-0693 Serial I/O Board 922-0749 Video Cable CRT Assembly (Not Offered) 922-0744 Rear Connector Panel 922-0698 AC Inlet 922-0695 Microprocessor Control Board 922-0710 Cover 922-0694 Control Panel Board 661-0882 CRT/Video Board 922-0818 Tilt/Swivel Base 661-0881 Main Deflection Board 922-0709 Rear Housing
