41
Troubleshooting
This chapter provides troubleshooting information for the AL1922:
1. No power
Chapter 4
OK
No power
Press power key and look
if the picture is normal
Please reinsert and make sure
the AC of 100-240 is normal
Measure U701 PIN2=1.8V
U702 PIN2=3.3V
Reinsert or check
the power section
X401 oscillate waveforms
are normal
Measure CN701 PIN5/6=12V?
Measure CN701 PIN9/10=5V?
OK
OK
NG
NG
NG
Replace U401
Replace X401
OK
NG
Check power section
Replace U701, U702
NG
Summary of Contents for AL1922
Page 1: ...0 Acer AL1922 Service Guide ...
Page 23: ...22 Rear Bezel Item Description 1 D SUB CABLE 2 DVI CABLE 3 AUDIO CABLE 4 AC POWER CORD ...
Page 27: ...26 II Dual Input Model Analog Signal Input III Dual Input Model Digital Signal Input ...
Page 34: ...33 Fig 4 Fig 5 ...
Page 35: ...34 Fig6 Fig 7 ...
Page 39: ...38 Fig13 ...