Sony XR-65X95K Service Manual page 51

TROUBLESHOOTING
4.4 No Picture - Tuner
FOR DIGITAL TUNING 2: @ US ATSC3.0 and Philippines
Digital Tuning 2
For US ATSC3.0
and Philippines
Sound is normal?
Digital broadcast?
Analog broadcast?
NG
Check part mounting
condition for I2C SDA & SCL
line. (Refer Note I2C)
Check part mounting
NG
Condition for X_DEMOD_
OK
RST_STBY line.
(Refer Note RST)
Change Tuner module
Check the status of
Change NG
IC3101 peripheral
parts
Confirm ANT or
Satellite connection
OK
OK
No sound
Enable to
IC1000 (SoC)
OK
NG
Check part mounting condition for
Enable to
digital data line"TU1_TS_DATA0,
TU1_TS_CLK, TU1_TS_VALID, TU1_TS
OK
_SYNC" (Refer Notes: TS line)
NG
OK Change NG
parts
components
A
NG
Check
OK
NG
IC1000 (SoC)
Change NG
defects
parts
Notes: I2C
- Parts for I2C SDA line:
R3036, R3040, C3005
- Parts for I2C SCL line :
R3035, R3039, C3006
Waveform confirmation point
• I2C_TU_SDA line: JL3013
• I2C_TU_SCL line : JL3012
Notes: TS line
-TS line parts for US ATSC3.0/Philippines
R3114/R3116/R3117/R3120/R3121/R3122/R3123/RB3001
- TS line parts for JP :
R3113/R3114/R3116/R3117/R3120/R3121/R3122/R3123/
R3027/RB3001
Insert correct signal in correct
A
ANT terminal.
Notes: RST
- Parts for
X_DEMOD_RST line:
R3109, C3117
Voltage confirmation point
C3117 = 3.3V
51
SYS SET