Sony KD-43X85K Manual page 75

2022/04/19 01:21:05 (GMT+09:00)
TROUBLESHOOTING
4.4 No Picture at Tuner -
Check part mounting condition
for I2C SDA & SCL line.
(Refer Note I2C)
NG
OK
Change Tuner module
Change NG parts
SAFETY NOTES
FOR DIGITAL TUNING For US ATSC3.0 and Philippines
Digital Tuning 2
For NA ATSC3.0
and PA ISDB
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 IC3001 peripheral
components
(UC ATSC 3.0, Philippines, JP)
SELF DIAGNOSIS FUNCTION
For JP
NG
Confirm ANT or
Satellite connection
OK
Replace main
board
Check part mounting condition for digital data line
"TU1_TS_DATA0, TU1_TS_CLK,
TU1_TS_VALID, TU1_TS_SYNC, TU_TS1_DATA1(JP Only)"
(Refer Notes: TS line)
NG
Change NG parts
NG
Change NG parts
TROUBLESHOOTING SERVICE ADJUSTMENT
Notes: I2C
- Parts for I2C SDA line: R3036, C3005
- Parts for I2C SCL line : R3035, C3006
Waveform confirmation point
• I2C_TU_ SDA line: JL3013
• I2C_TU_SCL line : JL3012
Notes: TS line
A -TS line parts for NA ATSC3.0/PA ISDB
R3120/R3121/ R3122/ R3123/ R3114/ C3126/ R3116/R3117/RB3001
- TS line parts for JP :
R3113/R3120/R3121/ R3122/ R3123/ R3114/ C3126/
R3116/R3117/RB3001
A : Insert correct signal in correct ANT terminal.
OK
Replace main
board
Notes: RST
- Parts for X_DEMOD_RST_STBY line:
R3109, C3117
Voltage confirmation point
C3117 = 3.3V
DIAGRAM
75
HANDLING GUIDE
SYS SET