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Monitor
AL1721h
Service manual
Keypad Board - Acer AL1721h Service Manual
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Table of Contents
Troubleshooting
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OSD is unstable or not working
Is KeyPad Board connecting
Y
Is Button Switch normally ?
Y
Is KeyPad Board Normally ?
Y
Check Main Board
KeyPad Board
39
N
Connect KeyPad Board
N
Replace Button Switch
N
Replace KeyPad Board
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