Read Harman Kardon SB 26 Service Manual online
5-2 Trouble shooting Chart
keys do not work
keys do not work
Go
No
Check 3.3v of XP601 PIN14 .
Yes
Replace the FB28 on the main
board.
No
Yes
Replace KEY board.
Check XP11 14PIN FFC . whether has it
breakage?
breakage?
Fix or replace the 14PIN FFC
Harman Kardon
SB 26 Service Manual
Page 7 of 44
Click on the first or last page to see other SB 26 service manuals if exist.