BenQ Q7T4-FP71G User Manual

Q7T4-FP71G LCD Monitor Service Guide
Alignment Procedure
1
Confidential
1. Alignment procedure (for function adjustment)
A. Preparation:
1. Setup input timing ICL-605( 1280x1024@75Hz ), 32-Grays pattern.
2. Setup unit and keep it warm up at least 30 minutes.
B. Timing adjustment:
1. Enter factory setting area (press “ENTER”, “EXIT” and then press “SOFTPOWER”).
2. Check the settings to following values:
Contrast = 50
Brightness = 90
OSD time = 20
Color = Normal
Language = English
Then, turn off the monitor power.
3. Turn on power enter user area.
C. Color balance adjustment:
1. Enter factory setting area (press “ENTER”, “I-Key” and then press “SOFTPOWER”).
2. Setup input timing ICL-605(1280x1024@75Hz), 32-Gray pattern (pattern 48) .
3. Press “I-KEY”, and than OSD will show “White Balance” item and than press “ENTER” button
to do auto color.

BenQ Q7T4-FP71G Specifications

General

Screen Size	17 inches
Native Resolution	1280 x 1024
Brightness	300 cd/m²
Contrast Ratio	500:1
Aspect Ratio	5:4
Panel Type	TN
Weight	4.5 kg
Viewing Angle	160° (H) / 160° (V)
Input	VGA
Input Connectors	VGA
Power Consumption	35W

Summary

Alignment Procedure

A. Preparation

Setup and warm up the unit for alignment.

B. Timing adjustment

Adjust timing settings to specified values.

C. Color balance adjustment

Perform auto color adjustment for color balance.

D. Color adjustment

Measure and check color temperature specifications.

E. Writing EDID file

Setup PC, connect, and write EDID file into EEPROM.

F. Command definition

Defines IIC slave address and byte commands for monitor control.

Circuit Operation Theory

A-1.) Interface board diagram

Diagram and explanation of the interface board.

A-2.) Control board introduction

Introduction to control board keys and LED indicators.

A-3.) Power board diagram

Block diagram of the power board.

A-4.) Inverter diagram

Block diagram and specifications for the inverter.

Engineering Specification

2. Operational Specification

Details on operational aspects of the monitor.

4. LCD Characteristics

Characteristics of the LCD panel.

5. User Controls

Information on user controls and OSD functions.

6. Mechanical Characteristics

Physical dimensions and weight of the monitor.

Q7T4 TROUBLE SHOOTING GUIDE

1.1 Interface Board

Troubleshooting steps for interface board issues.

2. BUTTON function

Troubleshooting button and control board issues.

3. OSD function

Troubleshooting OSD display problems.

4. Power Board

Troubleshooting steps for the power board.