Lenovo Y27g RE, Service Manual

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27" LCD Monitor Lenovo Y27g RE
1
Service
Service
Service
Horizontal Frequency
53-160 KHz
Table of Contents
Description Page Description Page
1. Monitor Specifications ............................................ 4
2. LCD Monitor Description ........................................ 6
3. Operating Instructions ............................................ 7
3.1 General Instructions ............................................. 7
3.2 Monitor Controls ................................................... 7
3.3 OSD Settings ........................................................ 8
4. Input/Output Specification ................................... 12
4.1 Input Signal Connector ....................................... 12
4.2 Factory Preset Display Modes ........................... 13
4.3 Panel Specification ............................................. 14
5. Mechanical Instructions ....................................... 18
6. Block Diagram ....................................................... 23
6.1 Main Board ......................................................... 23
7. Schematic Diagram ............................................... 24
7.1 Main Board ......................................................... 24
7.2 Key Board .......................................................... 34
7.3 USB Board ......................................................... 35
8. PCB Layout ............................................................. 39
8.1 Main Board ......................................................... 39
8.2 Key Board .......................................................... 43
8.3 USB Board ......................................................... 44
9. Trouble Shooting ................................................... 49
10. Firmware and DDC Instruction ........................... 53
11. White- Balance, Luminance Adjustment............ 70
12. Monitor Exploded View ....................................... 72
13. BOM List ............................................................... 74
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