![background image](http://html.mh-extra.com/html/samsung/gt-b6520/gt-b6520_service-manual_1192144062.webp)
SAMSUNG Proprietary-Contents may change without notice
Level 3 Repair
8-12
This Document can not be used without Samsung's authorization
8-3-1-5 Headset Working
Operate
Headset
NG
YES
Check HDC500 & U502
Headset
Button NG?
NO
Signal in R
505 = 1.8V?
Headset
MIC NG?
NO
YES
Check UCP300
(open, short, etc)
YES
NO
Signal in L5
06,L507?
Headset
SPK NG?
YES
YES
Check HDC500
(crack, short, etc)
NO
Signal on
in C407,
C408?
YES
Check U401 & neighb
oring circuits
NO
Check UCP300
(open, short, etc)
The End
NO
Signal in C
323?
NO
YES
Check UCP300
(open, short, etc)
Check HDC500
(crack, short, etc)