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8. Level 3 Repair
8-4-6 UB(Display part)
No
Not solved
Yes
No
No
Yes
Yes
Yes
UB is still off after PWR ON
Check the connection of
U507
END
Reconnect the U507
Check the Voltage on C505
/ C506 / C507 / C508 /
C510
Differs depending on
the brightness
Replace the C505, C506, C507, C508, C510 or U500
(UB DCDC)
Check the Voltage on C428
= 3.3V
Replace the C517 or U300
Swap the UB module
Replace the UB module
Solved
