Philips 231B4LPYCB/00, Service Manual, Page: 1 / 100

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LCD Color Monitor Chassis: Meridian 4
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Service
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Service
Description Page
Table of Contents.........................................………….1
Revision List………….................................................2
Important Safety Notice…………................................3
1. Monitor Specifications….........................................4
2. LCD Monitor Description….....................................7
3. Operation Instructions….........................................8
3 . 1 I n s t a l l a t i o n … … … … … … … … … … … . … . . . 8
3.2 Operating the monitor……... ………………..….…10
4. Input/output Specification............................…….12
4.1 Input Signal Connector.............................………12
4.2 Resolution & Preset Modes................................14
4.3 Pixel Defect Policy…………………………………15
4.4 Failure Mode of Panel………………………….....17
5. Block Diagram………………………….................18
6. Schematic Diagram.............................................. 19
6.1 Scaler Board…………………….…………………19
6.2 Power Board…….…………………………………24
6.3 Key Board…….…………………………………27
6.4 Earphone jack Board…….………………………28
6.5 LED Board…….…………………………………29
Description Page
6.6 USB Board………...………………………………30
7. PCB Layout………………………………………...31
7.1 Scaler Board……………………………………..31
7.2 USB Board………...………………………………31
7.3 Key Board………...……………………………31
7.4 Power Board………...……………………………32
7.5 IR Board………...……………………………32
7.6 Key Board………...……………………………32
7.7 Power Board………...……………………………32
8. Wiring Diagram………………………………….…..33
9. Scaler Board Overview…………………………....34
10. Mechanical Instructions………………………....34
11. Repair Flow Chart…….……………………………39
12. ISP Instructions...…............................................43
13. DDC Instructions….............................................49
14. White Balance, Luminance Adjustment…...........62
15. Monitor Exploded View…....................................64
16. Recommended & Spare Parts List...….............65
17. Different Parts List……………………….……….67
18 General Product Specification…………...……….68
SAFETY NOTICE
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
REFER TO BACK COVER FOR IMPORTANT SAFETY GUIDELINES
Copyright 2010 Philips Consumer Lifestyle Subject to modification
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Oct, 21, 2010
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