Acer AL922 AL922 Monitor Service Guide - Page 1

AL 922 TFT LCD MONITOR CONTENTS 1. INTRODUCTION ...3 1.1 Scope...3 1.2 Description...3 2. ELECTRICAL REQUIREMENTS ...4 2.1 Standard Test Conditions...4 2.2 Lcd Monitor General Specification...4 2.3 Lcd Panel Specification ...5 2.4 Input Signals ...11 2.5 Controls ...15 2.6 White Color Temperature ...17 2.7 Power Supply ...18 2.8 Plug & Play(Edid)...18 2.9 Audio Technical Specification ...19 3. VL-901 DISPLAY CONTROL BOARD...20 3.1 Description...20 3.2 Features ...20 3.3 Block Diagram ...21 3.4 Connector Locations...22 3.5 Connector Type...22 3.6 Connector Pin Assignment...22 4. VK901 Control Panel Board ...25 4.1 Description...25 4.2 Connector and Switch Locations ...25 4.3 Connector type ...25 4.4 Connector pin Assignment ...25 4.5 Switch definition...26 4.6 LED definition...26 5. INVERTER BOARD...27 5.1 Description...27 5.2 Electrical characteristics ...27 5.3 Connector locations ...28 6. DC/DC POWER and Audio CKT VM-902 29 6.1 Input:...29 6.2 Output: ...29 6.3 Efficiency...29 6.4 Connector Locations...29 7. TROUBLESHOOTING ...31 7.1 Main Procedure ...31 8. MECHANICAL REQUIREMENTS ...36 8.1 Vibration and Shock...36 8.2 Package Drop Specification ...36 8.3 Dimension Size and Weight...37 8.4 Gap Spec...37 8.5 Tilt Base Rotation ...39 8.6 Swivel Base Rotation...39 8.7 Plastic Material ...40 8.8 GAP Spec...40 9. Power Line Transient Test (IEC 61000-4-4 Fast Transients/Burst 40 9.1 Peak Voltage ...40 9.2 Polarity ...40 9.3 Repetition Frequency of the impulse...40 9.4 Rise-Time ...41 9.5 Impulse Duration ...41 9.6 Relation to Power Supply...41 1