31
Trouble Shooting
No picture (LED orange)
Chapter 5
Change key board/IR board
Check U401
Change U401
Check I
2
C bus
Check key board/IR board
Check I
2
C communication
No picture
OK
NG
OK
OK
NG
Check 24V power supply
OK
Check IC971 power supply circuit
NG
NG
Check main board Standby power supply
Change U902
OK
NG
Summary of Contents for AT1945
Page 1: ...1 Acer AT1945 AT1946 Service Guide ...
Page 7: ...7 Monitor Features General Specifications Chapter 1 ...
Page 8: ...8 ...
Page 13: ...13 Optical Specifications Test Conditions Optical Specifications ...
Page 14: ...14 Connecting Peripherals Front panel controls Chapter 2 ...
Page 17: ...17 Using the OSD Menus ...
Page 18: ...18 ...
Page 19: ...19 ...
Page 20: ...20 ...
Page 21: ...21 ...
Page 22: ...22 ...
Page 23: ...23 ...
Page 24: ...24 ...
Page 29: ...29 Fig 9 Fig 10 Disassemble the IR board Fig 11 Disassemble the front panel ...
Page 30: ...30 Fig 12 ...
Page 42: ...42 PCB Layout Main Board Layout Chapter 8 ...
Page 43: ...43 ...
Page 44: ...44 Power Board ...
Page 45: ...45 Key Board IR board ...