Sony XBR-55X900H Service Manual page 71

2020/06/27 06:31:32 (GMT+09:00)
4.4 No Picture Tuner
FOR DIGITAL TUNING 2: @ AEP, JP, US ATSC3.0 and Philippines
Check part mounting condition
for I2C SDA & SCL line.
NG
(Refer Note I2C)
OK
Change Tuner module
Change NG parts
SECTION 1
T R O U B L E S H O O T I N G
Digital Tuning 2
For US ATSC3.0
and Philippines
OK
Sound is normal?
OK
No sound
Can it preset Digital broadcast?
OK
NG
Can it preset Analog broadcast?
NG
OK
Check part mounting condition
for X_DEMOD_RST_STBY line.
(Refer Note RST)
OK
Check the status of IC3100
peripheral components
SECTION 2 SECTION 3
S E C T I O N 3
For AEP/JP
NG
Confirm ANT or Satellite connection
Check IC1000
(SoC)
Check part mounting condition for digital data line
"TU1_TS_DATA0, TU1_TS_CLK,
TU1_TS_VALID, TU1_TS_SYNC"
(Refer Notes: TS line)
NG
Change NG parts
NG
Change NG parts
SECTION 4
Notes: I2C
- Parts for I2C SDA line: R3066, C3263
- Parts for I2C SCL line : R3065, C3262
Waveform confirmation point
•
I2C_TU_ SDA line: JL3036
•
I2C_TU_SCL line : JL3037
A
Notes: TS line
-TS line parts for AEP/US ATSC3.0/Philippines
R3113/R3114/R3115/R3116/R3271/RB3001
- TS line parts for JP :
R3112/R3113/R3114/R3115/R3116/R3271/R3056/RB3001
A
Insert correct signal in correct ANT terminal.
:
OK
Check IC1000
(SoC)
Notes: RST
- Parts for X_DEMOD_RST line:
R3108, C3116
Voltage confirmation point
C3116 = 3.3V
SECTION 5 SECTION 6
71
SYS SET