Panasonic SA-BTT405P Service Manual page 25

Exchange the
AC inlet unt
NG
Exchange the
AC cord
NG
Exchange the
Power supply P.C.B.
NG
Exchange the Exchange the
Power supply P.C.B. Power supply P.C.B.
NG NG
Exchange the
Digital P.C.B.
NG
Exchange the FFC
NG
CHECK POINT LOCATION
Symptom -2
Disc Tray Can not OPEN or CLOSE
.
Check the
OPEN/CLOSE SW.
(Break or click feeling ...etc.)
OK
Check the Front Panel
(Broken ...etc.)
OK
Check the Digital P.C.B. Check the Digital P C B
connector XP4 voltage.*3
OK
Exchange the Mechanism unit
Exchange the
Front P.C.B.
NG
Exchange Front Panel
NG
Exchange the Exchange the
Digital P.C.B.
NG
VOLTAGE DATA (measurement value)
REF.NO.
*3
*3
*3
25
PIN NO. XP4
1 5.2V
2 3.4V
3 GND
4
3.2V