37
3. Panel Power Circuit
4. Keypad Board
OK
OK
OSD is unstable or not working
Is Keypad board connecting normally?
Is Button Switch normally?
Is Keypad board normally?
Check main board
Connect Keypad Board
Replace Button Switch
Replace Keypad Board
OK
NG
NG
NG
Check CN301 PIN1 should have
response from 0V to 5V When we
switch the power switch from on to off
Replace panel
Check the PPWR panel power relative circuit Q301, Q302
In normal operation, when LED =green, Q301B =5 V,
If PPWR no-response when the power switch
Turn on and turn off, replace the U202
OK
NG
Summary of Contents for P203W
Page 1: ...1 Acer P203W Service Guide ...
Page 10: ...10 LCD Panel Specification General Specifications Absolute Maximum Ratings ...
Page 11: ...11 Optical Specifications ...
Page 12: ...12 Support Timing ...
Page 18: ...18 Installation ...
Page 19: ...19 Attaching Removing the Base ...
Page 21: ...21 ...
Page 22: ...22 eColor Management OSD ...
Page 23: ...23 How to Adjust a Setting ...
Page 24: ...24 Adjusting the picture ...
Page 25: ...25 ...
Page 26: ...26 ...
Page 30: ...30 3 Remove the back cover and regard the hook Fig 3 4 Fig 3 Fig 4 ...
Page 31: ...31 4 Remove the keyboard Fig 5 Fig 5 5 Remove the bezel Fig 6 Fig 6 ...
Page 32: ...32 6 Remove the screws to remove the panel Fig 7 9 Fig 7 Fig 8 Fig 9 ...
Page 34: ...34 Fig 12 ...
Page 40: ...40 ...
Page 42: ...42 Exploded Diagram Model P203W ...
Page 44: ...44 5 Power Board 6 Main Board ...
