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Compaq MV7540 User Manual

Compaq MV7540
49 pages
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HP MV7540
1
17’’ CDT MONITOR
MV7540
THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT
HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE
ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS LIABILITY FOR
CHANGES, ERRORS OR OMISSIONS.
SERVICE MANUAL
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Compaq MV7540 Specifications

General IconGeneral
Screen Size17 inches
Maximum Resolution1280 x 1024
Display TypeCRT
Aspect Ratio5:4
Horizontal Refresh Rate30 - 70 kHz
Vertical Refresh Rate50-160 Hz
Input ConnectorsVGA
Viewable Image Size16 inches

Summary

Revision List

1. Monitor Specifications

2. Precautions And Notices

2-1 Safety Precautions

General safety guidelines for operating and servicing the monitor.

2-2 Product Safety Notice

Notice regarding safety of replacement parts and chassis.

2-3 Service Notes

Important notes for service personnel regarding component handling and wiring.

2-4 High Voltage Warning

Warning about shock hazards and X-ray radiation from high voltage.

3. Operating Instructions

4. Adjustment

4-1 Adjustment Conditions And Precautions

Conditions and precautions before performing monitor adjustments.

4-2 Main Adjustments

List of main adjustment functions, locations, and designations.

4-3 Adjustment Method

Detailed steps for B+ & HV voltage and factory preset timing adjustments.

White Balance, Luminance adjustment

Procedures for adjusting white balance and luminance settings.

Purity Adjustment

Guidelines for adjusting purity using magnets to ensure color accuracy.

Convergence adjustment

Steps for adjusting convergence using magnets for color lines.

5. Circuit Description

5-1 Micro Controller Circuit

Description of the micro controller's core, memory, and peripherals.

5-2 Deflection Circuit

Explanation of the deflection circuit, including oscillators and X-ray protection.

5-3 Transistor & Diode Circuit

List of transistors and diodes with their locations and circuit functions.

6. Trouble Shooting Chart

6-1 No Power

Flowchart for troubleshooting no power issues, checking voltage and components.

6-2. No Raster, No High Voltage, Indicator Is Orange

Troubleshooting steps for issues with no raster and no high voltage.

6-3. No Raster, Indicator Is Green

Flowchart for troubleshooting no raster with a green indicator light.

Section1

Troubleshooting steps for dark picture issues, checking filament and G2 voltage.

Section2

Troubleshooting steps involving IC401, H-frequency, and component checks.

6-4 H-Size Fails To Be Adjusted

Troubleshooting steps when H-size cannot be adjusted correctly.

6-5 Bad Focus

Troubleshooting steps for poor focus, involving adjustment controls and components.

7. Mechanical Of Cabinet Front Dis-Assembly

8. Parts List

9. Block Diagram

10. IC Block Diagram

IC401 STV9118

Block and connection diagram for IC401 (STV9118).

IC803 LM2480NA

Package pinout and schematic for IC803 (LM2480NA).

IC901 STR-5643

Block diagram for IC901 (STR-5643).

IC102 M24C08

Block diagram for IC102 (M24C08).

IC601 STV9302A

Block diagram for IC601 (STV9302A).

IC801 LM1237BDKE

Block and connection diagram for IC801 (LM1237BDKE).

IC802 LM2470TA

Schematic diagram and connection diagram for IC802 (LM2470TA).

11. PCB Layout

12. SCHEMATIC DIAGRA

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