4. TROUBLE SHOOTING
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(1) Check TP1 & TP2
No
Check the Soldering CN101
f ld
f
l
START
Connect to IAD with LAN cable
Yes
(1) Check TP1 & TP2
Vpp = 1V
(2) Check TP3 & TP4
Vpp = 1V
Yes
If soldering is fine, replace
CN101
No
Check the Soldering U104 &
R137 & R138
(2) Check TP5 & TP6
Vpp = 1V
Yes
No
Check the Soldering U104 &
R133 & R135
Yes
Replace U202
FINISH
Yes