Apple Multiple Scan 20 Display Spécifications

Service Source K Apple Multiple Scan 720 Display

Basics Overview - 3 The front panel of the display includes the following controls:• Power button• Brightness• Contrast• On-Screen Display (OSD) sel

Adjustments Non-User Controls - 23 Focus Adjustment Before you begin, refer to the Take Apart chapter to remove the rear housing. ± Warning: This p

Adjustments Non-User Controls - 24 adjust the controls.1 Turn on the display and let it warm up for five minutes.2 Using the control strip, set the d

Adjustments Non-User Controls - 25 4 With the front panel control knobs, set• Brightness control to detent• Contrast control to maximum

Adjustments Non-User Controls - 26 5 Use a plastic screwdriver to adjust the two Focus controls on the flyback transformer for best center screen foc

Adjustments Non-User Controls - 27 Geometry Check Checking the screen geometry is the final step after the other adjustments. 1 Use the On-Screen Di

Service Source K Exploded View Apple Multiple Scan 720 Display

Exploded View 1922-3144Rear Housing922-3153Tilt-Swivel Monitor Stand922-3145 Front BezelEMIShield(not offered)CRT Assembly(not offered)661-1466Main

Basics Overview - 4 Repair and Replacement Tips The monitor stand does not need to be removed before the rear housing is removed, however the monito

Service Source K Specifications Apple Multiple Scan 720 Display

Specifications Characteristics - 1 Characteristics Picture Tube 17-in. diagonal flat square CRT (16.0-in. diagonal viewable image)Multiple scan, ant

Specifications Characteristics - 2 1024x768 at 75 Hz in VESA mode1024x768 at 85 Hz in VESA mode1152x870 at 75 Hz in Macintosh mode1280x1024 at 60 Hz

Specifications Characteristics - 3 System Requirements Power Macintosh, Macintosh Performa, and Macintosh Quadra computers with 68040 or later micro

Specifications Characteristics - 4 Monitor Timings 640x480 Resolution @ 60 Hz640x480 Resolution @ 66.7 HzHorizontal Timing Horizontal Timing1/H: 3

Specifications Characteristics - 5 Monitor Timings 640x480 Resolution @ 85 Hz800x600 Resolution @ 60 HzHorizontal Timing Horizontal Timing1/H: 43.26

Specifications Characteristics - 6 Monitor Timings 800x600 Resolution @ 72 Hz800x600 Resolution @ 85 HzHorizontal Timing Horizontal Timing1/H: 48.0

Specifications Characteristics - 7 Monitor Timings 832x624 Resolution @ 75 Hz1024x768 Resolution @ 60 HzHorizontal Timing Horizontal Timing1/H: 49.7

Service Source K Hot Issues Apple Multiple Scan 720 Display

Specifications Characteristics - 8 Monitor Timings 1024x768 Resolution @ 70 Hz1024x768 Resolution @ 75 HzHorizontal Timing Horizontal Timing1/H: 56.

Specifications Characteristics - 9 Monitor Timings 1024x768 Resolution @ 85 Hz1152x870 Resolution @ 75 HzHorizontal Timing Horizontal Timing1/H: 68.

Specifications Characteristics - 10 Monitor Timings 1280x1024 Resolution @ 60 HzHorizontal Timing1/H: 63.8 kHzBack Porch: 248 dotsH SYNC: 112 dots p

Specifications Controls and Ports - 11 Controls and Ports User Controls Front panel: power, brightness, contrast, On-Screen Display Enter, On-Screen

Specifications Physical and Electrical - 12 Physical and Electrical Power Supply Voltage: 100–120 VAC; 220–240 VACFrequency: 50–60 HzPower: 120 W ma

Specifications Environmental - 13 Environmental Temperature Operating: 50°F to 104°F (10°C to 40°C)Shipping: –4°F to +140°F (–40°C to +60°C)Storage:

Specifications Environmental - 14 Power-Saving and Environmental Features Conforms to the Energy Star program of the United States Environmental Pro

Service Source K Troubleshooting Apple Multiple Scan 720 Display

Troubleshooting General - 1 General The Symptom Charts included in this chapter will help you diagnose specific symptoms related to your product. Be

Troubleshooting First Checklist/ - 2 First Checklist Important: Many display modules returned for repair are found to be fully operational. Read th

Hot Issues Introduction - 1 Introduction This chapter is designed to highlight unique or high-priority product issues that you should be aware of be

Troubleshooting First Checklist/ - 3 A maladjusted screen can mimic the symptoms of deflection board or CRT failures. By performing the adjustment p

Troubleshooting Symptom Charts/No Raster - 4 Symptom Charts No Raster No raster with LED on 1 Check exterior power cord and video cable connections.

Troubleshooting Symptom Charts/No Raster (Continued) - 5 No Raster (Continued) No raster with LED off 1 Ensure that power cord is plugged in prop

Troubleshooting Symptom Charts/Video - 6 Video Screen flickers 1 Check monitor cable connections. Thumbscrews must be tightened securely. If a video

Troubleshooting Symptom Charts/Video (Continued) - 7 Video (Continued) Screen is blurred Note: If the monitor is set at the highest screen re

Troubleshooting Symptom Charts/Video (Continued) - 8 Video (Continued) Raster is too bright 1 Adjust brightness and contrast controls. See “User

Troubleshooting Symptom Charts/Video (Continued) - 9 Video (Continued) Colors are too green, red, or blue, and the screen is unreadable1 Using th

Troubleshooting Symptom Charts/Geometry - 10 Geometry Raster is too short, tall, narrow, or wide1 Using the On-Screen Display, click Recall.2 Adjust

Troubleshooting Symptom Charts/Geometry (Continued) - 11 Geometry (Continued) Raster is not centered 1 Using the On-Screen Display, click Recall.

Service Source K Take Apart Apple Multiple Scan 720 Display

Hot Issues Jittery or Blurry Video with Power Macintosh 5500/6500 - 2 Jittery or Blurry Video with Power Macintosh 5500/6500 If the display exhibits

Take Apart Safety Guidelines - 1 Safety Guidelines ± Warning: This product contains high voltage and a high-vacuum picture tube. To prevent seriou

Take Apart Safety Guidelines - 2 Important: Whenever the housing of the monitor is removed and before replacing a module, you must do the followin

Take Apart Safety Guidelines - 3 2 Establish an ongoing ground by using a cable with alligator clips at both ends. Connect one end to the anode aper

Take Apart List of Tools - 4 List of Tools Required Tools • Magnetized Phillips screwdriver• CRT discharge tool (Apple part number 076-0381)• Sharp

Take Apart Tilt-Swivel Monitor Stand - 5 Tilt-Swivel Monitor Stand No preliminary steps are required before you begin this procedure. Caution: Nev

Take Apart Tilt-Swivel Monitor Stand - 6 1 Place the monitor face-down on a protective pad with the monitor stand in front of you.

Take Apart Tilt-Swivel Monitor Stand - 7 2 Position the stand so you can easily reach around the collar of the stand with both hands.3 With your thu

Take Apart Tilt-Swivel Monitor Stand - 8 Replacement Note: Align the four latches on the monitor stand with the slots in the bottom chassis. Then

Take Apart Rear Housing - 9 Rear Housing Before you begin, remove the tilt-swivel monitor stand. ± Warning: This product contains high voltage and

Take Apart Rear Housing - 10 1 With the monitor face-down, remove the four Phillips screws from the corners of the rear housing.

Hot Issues Jittery or Blurry Video with Power Macintosh 5500/6500 - 3 Identifying Suspect Units Video jitter or blurry video can be caused by Power

Take Apart Rear Housing - 11 2 Lift the rear housing straight up from the monitor assembly. Feed the video cable through the opening in the rear hou

Take Apart Rear Housing - 12 Replacement Caution: The back of the rear housing carries a product ID label that includes the serial number and manu

Take Apart EMI Shield - 13 EMI Shield Before you begin, • Remove the tilt-swivel monitor stand• Remove the rear housing• Discharge the CRT and remov

Take Apart EMI Shield - 14 Caution: Never use a grounding wriststrap until after discharging the CRT.1 Caution: Avoid jiggling the monitor assem

Take Apart EMI Shield - 15 2 Flex the sides of the EMI shield outward to clear any wires or tabs.3 Lift the shield up and away from the monitor asse

Take Apart EMI Shield - 16 Replacement Note: Before replacing the EMI shield screws, ensure the shield is fitted between the two tabs on the back

Take Apart Main Deflection Board and CRT/Video Board Module - 17 Main Deflection Board and CRT/Video Board Module Before you begin, • Remove the til

Take Apart Main Deflection Board and CRT/Video Board Module - 18 review CRT safety in Bulletins/Safety. Caution: Never use a grounding wriststrap

Take Apart Main Deflection Board and CRT/Video Board Module - 19 1 With the monitor face-down, disconnect the following cables from the left side of

Take Apart Main Deflection Board and CRT/Video Board Module - 20 2 Disconnect the following cables from the CRT/video board:• Two single-pin ground

Hot Issues Jittery or Blurry Video with Power Macintosh 5500/6500 - 4 Power Macintosh 6500 computers should not be set to resolutions higher than 11

Take Apart Main Deflection Board and CRT/Video Board Module - 21 3 From the right side of the CRT assembly, disconnect• 2-wire connector P702 (red a

Take Apart Main Deflection Board and CRT/Video Board Module - 22 4 Locate the metal ring clamp closest to the CRT/video board on the neck of the CRT

Take Apart Main Deflection Board and CRT/Video Board Module - 23 7 Use a pen light to check for glue between the CRT socket and the CRT neck. If glu

Take Apart Main Deflection Board and CRT/Video Board Module - 24 8 Caution: CRT pins are easily damaged. Gently rock the CRT/video board back and f

Take Apart Main Deflection Board and CRT/Video Board Module - 25 9 With the CRT/video board wires still attached, remove the CRT/video board from th

Take Apart Main Deflection Board and CRT/Video Board Module - 26 10 ± Warning: The metal edges of the chassis are sharp. Use caution when removing

Take Apart Main Deflection Board and CRT/Video Board Module - 27 11 Lift the main deflection and CRT/video board module away from the CRT. Replaceme

Take Apart Main Deflection Board and CRT/Video Board Module - 28 Replacement Note: Avoid pinching or straining cables when replacing the main defl

Take Apart Video Cable - 29 Video Cable Before you begin, • Remove the tilt-swivel monitor stand• Remove the rear housing• Discharge the CRT and rem

Take Apart Video Cable - 30 Bulletins/Safety. Caution: Never use a grounding wriststrap until after discharging the CRT.1 Disconnect the 6-pin loc

Service Source K Basics Apple Multiple Scan 720 Display

Take Apart Video Cable - 31 4 Remove the single Phillips screw from the metal clamp at the back panel.5 Slide the strain relief up and out of the ba

Take Apart Video Cable - 32 6 Disconnect the following cable connectors from the bottom of the CRT/video board:• P301• Single-pin connector

Take Apart Video Cable - 33 7 Lift the video cable away from the main deflection board and CRT/video board.

Take Apart Front Bezel - 34 Front Bezel Before you begin, • Remove the tilt-swivel monitor stand• Remove the rear housing• Discharge the CRT and rem

Take Apart Front Bezel - 35 Bulletins/Safety. Caution: Never use a grounding wriststrap until after discharging the CRT.1 Remove the four screws a

Take Apart Front Bezel - 36 3 With both hands, grasp the CRT by its edges and lift it off of the front bezel. ± Warning: Never lift a CRT by the n

Take Apart Front Bezel - 37 Replacement Note: The front bezel module includes the following:• Power button and spring• Heat-staked button• Power L

Service Source K Adjustments Apple Multiple Scan 720 Display

Adjustments Introduction to the On-Screen Display - 1 Introduction to the On-Screen Display You can adjust the screen image using the buttons and kn

Adjustments Introduction to the On-Screen Display - 2 User Controls The front panel controls include:• Power Button• Contrast Control• Brightness Con

Basics Overview - 1 Overview The Apple Multiple Scan 720 Display is a low-cost 17-inch (16.0-inch viewable image size) monitor. It offers screen res

Adjustments Introduction to the On-Screen Display - 3 From the On-Screen Display, you can select control icons that represent the following picture-q

Adjustments Introduction to the On-Screen Display - 4 In addition to the picture-quality controls, the On-Screen Display offers the following contro

Adjustments Non-User Controls - 5 Non-User Controls After replacing the main deflection board and CRT/video board module, check the following and ad

Adjustments - 6 Board DiagramFocus 2Focus 1ScreenVideoD951C951SW701VR211VR212Brightness ControlContrast ControlVR9

Adjustments Non-User Controls - 7 B+ Voltage Adjustment Before you begin, refer to the Take Apart chapter to remove the rear housing and EMI shield.

Adjustments Non-User Controls - 8 1 Turn on the display and let it warm up for five minutes.2 Using the control strip, set the screen resolution to 1

Adjustments Non-User Controls - 9 4 Locate potentiometer VR901 near the center of the main deflection board.

Adjustments Non-User Controls - 10 5 Locate diode D951 on the main deflection board. (It is near the large blue capacitor C951.)Notice the cathode (s

Adjustments Non-User Controls - 11 6 Connect the black (ground) probe to the monitor’s metal chassis.7 Connect the red (positive) probe of a digital

Adjustments Non-User Controls - 12 High Voltage Check Before you begin, refer to the Take Apart chapter to remove the rear housing and EMI shield. ±

Basics Overview - 2 Features Features of the Apple Multiple Scan 720 Display include• 17-inch (16.0-inch VIS) CRT• 0.28 mm dot pitch• Multiple resol

Adjustments Non-User Controls - 13 1 Turn on the monitor and let it warm up for five minutes.2 Using the control strip, set the screen resolution to

Adjustments Non-User Controls - 14 let it remain off for at least two minutes. Important: Do not attempt this procedure without the Apple high-vol

Adjustments Non-User Controls - 15 8 Carefully insert the probe under the anode cap. ± Warning: Do not remove the probe from under the anode cap

Adjustments Non-User Controls - 16 Screen Adjustment Before you begin, refer to the Take Apart chapter to remove the rear housing. ± Warning: This

Adjustments Non-User Controls - 17 adjust the controls.1 Turn on the display and let it warm up for five minutes.2 Using the control strip, set the s

Adjustments Non-User Controls - 18 4 With the front panel control knobs, set• Brightness control to detent• Contrast control to maximum

Adjustments Non-User Controls - 19 5 With the room lights dimmed, use a plastic screwdriver to slowly adjust the Screen control so that the leftmost

Adjustments Non-User Controls - 20 Horizontal Centering Before you begin, refer to the Take Apart chapter to remove the rear housing. ± Warning: Th

Adjustments Non-User Controls - 21 ± Warning: Because you make adjustments from the rear of the monitor, position a mirror to view the monitor scre

Adjustments Non-User Controls - 22 2 Using the On-Screen Display, click Recall.3 From the back panel, use a plastic screwdriver to position the arm o