Acer AL1731 AL1731 Service Guide - Page 2

CONTENTS 1. INTRODUCTION ...3 1.1 Scope ...3 1.2 Description ...3 2. ELECTRICAL REQUIREMENTS...4 2.1 Standard Test Conditions ...4 All tests shall be performed under the following conditions, unless otherwise specified 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...19 2.7 POWER SUPPLY ...20 2.8 Plug & Play (EDID) ...22 2.9 Audio Technical specification ...23 3. VL-903 DISPLAY CONTROL BOARD...24 3.1 Description ...24 3.2 Features...24 3.3 BLOCK DIAGRAM ...25 3.4 Connector Locations ...26 3.5 Connector Type ...26 3.6 Connector pin assignment ...27 4. VK-903 Function Control key Board...30 4.1 Description ...30 4.2 Connector and Switch Locations...30 4.3 Connector type...30 4.4 Connector pin Assignment...30 4.5 Switch definition ...31 4.6 LED definition ...31 5. TROUBLESHOOTING ...32 5.1 Main Procedure...32 6. MECHANICAL REQUIREMENTS ...37 6.1 Vibration and Shock ...37 6.2 Package Drop Specification ...37 6.3 Dimension Size and Weight ...38 6.4 Tilt Base Rotation ...40 6.5 Plastic Material ...40 6.6 GAP Spec...40 7. Power Line Transient Test (IEC 61000-4-4 Fast Transients/Burst 40 7.1 Peak Voltage: ...40 7.2 Polarity : + / - ...41 7.3 Repetition Frequency of the impulse : 5 KHz...41 7.4 Rise-Time : 5ns ± 30% ...41 7.5 Impulse Duration: 50 nS ± 30%...41 7.6 Relation to Power Supply: Asynchronous ...41 7.7 Burst Duration: 15 ms ± 20% ...41 7.8 Burst Period: 300 ms ± 20% ...41 7.9 Climatic Conditions: ...41 7.10 Test Procedure: ...41 8. Power Line Surge Test (IEC 61000-4-5 Surge 43 8.1 Climatic Condition ...43 8.2 Test Conditions:...43 8.3 The surge will be applied between lines and between lines and ground 43 8.4 If not otherwise specified, the surge to power supply circuits shall be applied synchronized 43 8.5 The surge voltage for test is from 1 KV and increases 1 kV for each step 43 8.6 The recommended severity levels for the surge voltage test is 2.0 KV 43 8.7 Display set high-resolution mode, AC input use AC 240V 43 9. ENVIROMENT REQUIREMENT...44 9.1 Operating...44 1