Harman Kardon ONYX (serv.man5) Service Manual ▷ View online
5-2 Trouble shooting Chart
Touch VOL kes do not work
Some touch keys
do not work
do not work
Go
No
Check regesters of I2C high pull is normal
Yes
Yes
check some LED is ok or not
Check I2C of connect touch and mcu
Replace the touch with another touch board
for
for
Check the main board ok or not.
Check the component of XP18 weather weld
OK?
OK?
Yes
Harman Kardon
ONYX Service Manual
Page 9 of 34
5-3 Trouble shooting Chart
Usb can not work
USB cannot work
Go
Yes
No
Yes
No
Replace the U5 with EUP3484S
Check 5pin line weather connect OK or not
Check U6 output 5V is normal
Instead of u14
Sure connect is OK
Harman Kardon
ONYX Service Manual
Page 10 of 34
5-4 Trouble shooting Chart
No NFC
No
No NFC
Go
Check touch is OK
Yes
No
Yes
Change a good NFC module
Check IOS play is OK by Bluetooth
Check other function is OK
Check 2pin line of connect NFC to main board is
well
well
Connect well
Harman Kardon
ONYX Service Manual
Page 11 of 34
5-5 Trouble shooting Chart
BT cannot work
AUX or airplay cannot work analyze same to BT
BT cannot work
Go
Ye
s
s
Connect BT ANT to main board
NO
Replace U19
No
Yes
Get close to DUT,Check bt cannot work
Check U19 is normal
Replace U13 with AK7742
Check airplay work ok or not
Instead of U10 (BTM153)
No
Yes
Harman Kardon
ONYX Service Manual
Page 12 of 34
Click on the first or last page to see other ONYX (serv.man5) service manuals if exist.