Apple LED Cinema Display Technician Guide

Uncategorized Symptoms 22
Display Issues 23
Blank / No Video, No Backlight 23
Noise / Unstable Flicker 24
LCD Image Issues 26
Physical Damage 30
Uncategorized Symptoms 30
Input/Output Issues 31
USB Issues 31
Camera Issues 32
Audio Issues 33
Uncategorized Symptoms 36
Mechanical Issues 37
Noise, Hum or Vibration 37
Fan Failures / Thermal Issues 39
Mechanical Physical Damages 40
Uncategorized Symptoms 40
Take Apart
General Information 42
Opening the Unit 42
Required Tools 42
Required Special Tools for Glass Panel 42
Cleaning Tools Starter Kit 43
Cleaning Tool Resources 43
Cleaning & Handling the Glass Panel 43
Do’s and Don’ts 43
Handling a Broken Glass Panel 44
How to Remove a Broken Glass Panel 44
Safety 45
Reassembly Steps 45
Note About Images in This Guide 45
Glass Panel 46
Removal 47
Replacement 48
LCD Panel 51
Removal 52
Replacement 54
Logic Board 55
Removal 56
Replacement 58

Apple LED Cinema Display Specifications

General

Screen Size	27 inches
Aspect Ratio	16:9
Brightness	375 cd/m²
Contrast Ratio	1000:1
Built-in Speakers	Yes
Built-in iSight Camera	Yes
Panel Type	IPS
Response Time	12 ms
Color Support	16.7 million colors
Built-in Microphone	Yes
Resolution	2560 x 1440 pixels
Viewing Angle	178° horizontal and vertical
Ports	Mini DisplayPort, USB 2.0
Power Consumption	250W (maximum)