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