Apple cinema display 22 lcd User Manual

Apple Cinema Display 22 (ADC) Troubleshooting - 1
 Symptom Charts
Symptom Charts
How to Use the Symptom Charts
The Symptom Charts included in this chapter will help you diagnose specific symptoms 
related to the product. Because cures are listed on the charts in the order of most likely 
solution, try the cures in the order presented. 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...

2 - Apple Cinema Display 22 (ADC) Troubleshooting
 Symptom Charts 5. To check whether the LCD is working, make sure that the display’s power light is on 
(glows white). Shine a bright light such as sunlight or a high intensity lamp (see 
Important note, below) into the screen and at the same time notice whether you can 
see faint images of desktop items on the screen. 
• If desktop items can be seen, the LCD panel is working. The problem may be with 
the inverter or backlight bulbs or related cables or...

Apple Cinema Display 22 (ADC) Troubleshooting - 3
 Symptom Charts
Partially dim screen
This symptom indicates a problem with the inverter or backlight bulbs (on the side of the 
display that is dim), or related cables or connectors. This may be caused by the backlight 
bulbs or the inverter not working properly.
1. Plug the display into a known-good computer with a known-good video card and ADC 
display port. Boot the computer.
2. Notice whether the power button on the display is flashing, two short...

4 - Apple Cinema Display 22 (ADC) Troubleshooting
 Symptom Charts
USB device not working
1. Check for bent pins in the ADC connector (note, it is normal for two of the pins to be 
slightly longer than the others). If pins are slightly bent, carefully straighten. If pins are 
severely bent, replace cable. Also, inspect or have the customer inspect the display 
port on the computer for broken pin dividers. If the display port is damaged it must be 
repaired before inserting the ADC connector.
2. Plug the...

Apple Cinema Display 22 (ADC) Troubleshooting - 5
 Symptom Charts
When displaying a single color over the screen area, the LCD panel shows one 
or more pixels that are not properly lit
Active-matrix LCD technology uses rows and columns of addressable locations (pixels) 
that render text and images on screen. Each pixel location has three separate subpixels 
(red, green, and blue) that allow the image to be rendered in full color. Each subpixel has a 
corresponding transistor responsible for turning the...

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Views
Apple Cinema Display 22 LCD (ADC) 

Apple Cinema Display 22 (ADC) Views - 1
 Block Diagram
Block Diagram
Block Diagram
USB Socket
Panel Signal Input
Main Board
LCD Display Panel
J3
J4 J1 J6
Power/Brightness
Switch Board
Backlight Bulb
Connectors Backlight Bulb
Connectors
J5 J2
Inverter
Board
ADC Cable 

2 - Apple Cinema Display 22 (ADC) Views
 Exploded View
Exploded View
Exploded View
Foot  922-3941
Rear Cover  922-5666 (includes
power/brightness switch board)
ADC Cable Assembly
922-5669
USB Cable Assembly
922-5677
Hinge  922-5670
Hinge Cover  922-3945
USB Cover  922-5674
Chassis  922-5667
Inverter Board  661-2809
Inverter Shield  922-5671
Front Bezel Assembly
922-5668
Backlight Bulb Assembly
922-5675
LCD Display Assembly
661-2801
Main Board Shield  922-5673
Main Board  661-2810 

Apple Cinema Display 22 (ADC)
 Screw Matrix
Screw Matrix
Screw Matrix
13 mm Hex 922-5679 Foot (3)
10 mm Hex 922-5680 Rear Cover (18)
10 mm Phillips (black) 922-3541 Chassis to Bezel (4)
8 mm Phillips (flat head) 922-5681 Chassis sides (2)
10 mm Phillips (washer) 922-5682 Chassis corners (4)
6 mm Phillips 922-5135 Main board shield (4)
5 mm Phillips (flat head) 922-5640 USB socket (2)
8 mm Phillips (lock washer) 922-5683 ADC cable clips (2)
6 mm Phillips (yellow, lockhead) 922-5684 USB cable clip (1)
10...