Read Harman Kardon ONYX STUDIO 3 (serv.man2) Service Manual online
Keys do not work
keys do not work
Go
No
Replace the old with the new KEY
board to the EUT working.
Yes
Replace the key
board
.
No
Yes
Check from main board the BAT_3V7
and VCC_3V3 power supply is
normal?
Check 10pin FFC cable (XP6) to main board
of connect yes or not.?
of connect yes or not.?
Instead of new 10pin line
Check KEY signal from BT module (U6)
in main board.
Yes
No
Replace the BT part or other load parts
Check the main board the
BT module
(U6)
other supply network load parts
(for example: BT_1.8V).
Yes
Replace PCBA for main board.
No
5-1
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