Philips 190B7 Service Manual

19" LCD Color Monitor
Service
Service
Service
Description
Table Of Contents.................................................................1
Revision List.....................................................................2
Important Safety Notice...................................................3
1. Monitor Specifications...................................................4
2. LCD Monitor Description..............................................5
3. Operation instructions.................................................6
3.1General Instructions..............................................6
3.2 Control buttons........................................................6
3.3 Adjusting the Picture..................................................7
3.4 Connecting to the PC ..................................................11
4. Input/Output Specification...........................................12
4.1 Input Signal Connector..............................................12
4.2 Factory Preset Display Modes......................................13
4.3 Pixel Defect Policy..................................................14
5. Block Diagram...........................................................16
5.1 Monitor Exploded View..............................................16
5.2 Software Flow Chart....................................................17
5.3 Electrical Block Diagram.............................................19
6. Schematic Diagram.........................................................21
6.1 Main Board...........................................................21
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

TABLE OF CONTENTS

Page Description
6.2 Power Board..............................................................26
6.3 Audio Board............................................................28
7. PCB Layout....................................................................29
7.1 Main Board.....................................................................29
7.2 Power Board.................................................................32
7.3 Audio Board................................................................35
7.4 Key Board..................................................................35
7.5 USB Board.............................................................35
8. Wiring Diagram............................................................36.
9. Mechanical Instructions......................................................37
10.Trouble shooting.......................................................45
11. Repair Flow Chart........................................................47
12. ISP Instructions...............................................................52
13. DDC Instructions............................................................58
14. White Balance, Luminance Adjustment..........................72
15. Spare Parts List..................................................................73
16. Different Parts List........................................................86
17. General Product Specification.....................................105
SAFETY NOTICE
1
Horizontal Frequency
30- 83KHz
GB
3138 106 10506
190B7
Page