Sony HT-RT3 Service Manual page 18

HT-RT3
Ver. 1.3
5. USB cannot be detected
USB cannot be detected.
Yes
Check IC3000 pin 1 is 5.1V.
Yes
Check coil (L3000) pin 1 and
pin 3 are shorted to ground.
Yes
Replace complete MAIN
board.
6. Display panel is not functioned
No Display.
18
No
Check that there is no
No
abnormality on USB board
connector (CN7000).
Yes
Replace connector
(CN7000) on USB board.
Check voltage of C5008 on
Yes
OLED CHUKEI PC BOAR
board is around 12V.
No
Turn OFF the set and
disconnect the WIRE
(FLAT TYPE) from OLED
CHUKEI PC BOAR board.
Check IC3000 pin 4 is 3.3V.
Yes
Check IC3000 pin 5 is 5.1V.
Yes
Replace IC3000 on MAIN
board.
Check resistance of C5008
Yes
on OLED CHUKEI PC
BOAR board is > MΩ.
No
Replace C5008 on OLED
CHUKEI PC BOAR board.
Replace Q3208 and L3207
on MAIN board.
No
Refer to "Power is not turned
on" on page 17.
No
Replace complete MAIN
board.
Yes
Turn the power ON and
confirm the Display function.