Apple LED Cinema Display Technician Guide

LED Cinema Display (24-inch)
Contents
About This Manual
Updates 7
Updated 8 February 2010 7
Updated 28 October 2009 7
Updated 2 December 2008 7
Feedback 7
Basics
Overview 9
Identifying Features 9
System Requirements 9
Product Congurations 9
Rear View 10
Ports 10
All-In-One Cable 10
Serial Number Location 11
Serial Number on Stand 11
Serial Number on Mechanism 11
Troubleshooting
General Troubleshooting 13
Troubleshooting Theory 13
Hardware vs. Software 13
Functional Overview 14
Block Diagram 15
Test Points Diagram 16
Symptom Charts 17
Startup and Power Issues 17
Dead Unit / No Power 17
Burnt Smell/Odor 19
MagSafe Adapter – No Power 20
Sleep/Wake Issue 21

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)