Acer PD721 Technical Information download pdf (Page 37)

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Chapter 4 30

Function Troubleshooting

Color Adjust Procedure :

* Notice : PC shall run R.G.B. gray scale pattern.

1. Power on. Press Up, Up, Left button when the No Signal show on the screen.

2. Choose Display Source

3. Choose Color Wheel Index.

4. Press Left or Right button to adjust.

4Note 1 : It may need to be used when you replace Main Board or Optical Engine

alone.

Does OSD

show up?

Start

Is KeyPad

Board OK?

Yes

Is Remote

Controller

OK?

Yes

Change

Main Board

Change

Key Pad Board

Can function

be adjusted?

Yes

Change

Battery

End

Change

Remote

Controller

Is Keypad

Board ok?

Change

Main Board

Yes

Change Key-

pad Board

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 53 54

Acer PD721 1
Revision History 2
Copyright 3
Disclaimer 3
Conventions 4
Table of Contents 7
System Introduction 8
Chapter 1 2 9
Product Overview 10
Panel Control 11
Connection Ports 12
System Block Diagram 13
Main Board Block Diagram 14
Thermal Board Block Diagram 15
Formatter Block Diagram 16
Firmware Upgrade 17
Setup Procedure 18
Upgrading Procedure 18
2. Click “Choose” button 19
PD721-V05-2002.08.13\ 19
PD721-V05-2002.08.13 19
4. Select “Serial” Port 20
5. Select “COM1” port 20
Chapter 2 14 21
Before You Begin 24
23 Chapter 3 30
Front End Board 30
Removing Formatter Board 31
Removing Engine Module 32
Troubleshooting 33
Main Procedure 34
Power Troubleshooting 35
Performance Troubleshooting 36
Function Troubleshooting 37
Audio Troubleshooting 38
Equipment Needed 39
Test Condition 39
Compatible Modes 40
Digital : 41
Function Test Display Pattern 42
Chapter 4 36 43
Inspection Procedure 44
Chapter 4 38 45
Chapter 5 46
FRU List 47

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