Read Harman Kardon ONYX (serv.man5) Service Manual online
5-1 Trouble shooting Chart
Touch keys do not work
Touch keys do not
work
work
Go
No
Replace the touch with another touch board
for
for
Check the main board ok or not.
Yes
Check the component of XP18 weather weld
OK?
OK?
No
Yes
Check STB3V3 weather normal
Check 24pin FFC line of connect ok or not
Instead of new 24pin FFC line
Fix or replace the key board
Fix or replace the key board
Yes
Weld well
Replace U5 with new EUP3482A
Yes
No
Check supply of U14
No
Replace U14 with new MCU
YES
Replace U23 with new LED driver
Harman Kardon
ONYX Service Manual
Page 8 of 34
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