When The Power Supply Is Not Available - Samsung S23A750D Service Manual

4 故障排除

4-2 When the power supply is not available

-After connecting the power supply turn on the power button, the front of
Sign
the monitor LED is not running.
-Check the screens at the back of the monitor power switch is turned on.
Mainly a -Check whether the adapter and connector are connected correctly.
checkpoint
-Check that the connector is properly connected to the 1 And 2 Between
the layers.
Diagnosis
Attention Check the make sure to disconnect power before connecting the
motherboard.
4-2
第 2 On a CN504 PIN 2 和 3 Volta
为 V 0 Pipe 1 The voltage is a
DC14V ？
是
第 2 On the power IC Is there a normal
是
第 1 Layer 2 Between key 6 、 7 和 8
是
第 1 On the power IC Is there a normal
是
Replace the motherboard
Main PBA – 1st Floor_Top
否
否
否
14 ？
V
否
Check component connection
Replace the adapter and check
Check 2 Layer IC501 、 IC502 、
IC505 和 IC506 Related circuits
If necessary, 2 Floor
Check 1 Layer 2 Layer CN100
Related
Check 1 Layer IC201 、
IC202 、 IC203 、 IC204 、 Q208
和 Q630 Related circuits and,
Replace 1 Floor