Sony KD-43X85K Manual page 70

2022/04/19 01:21:05 (GMT+09:00)
TROUBLESHOOTING
4.4 No Picture at Tuner
RF input no picture / noisy picture
Check RF source cable
and antenna, OK?
OK
Check Tuner power line:
3.3V at JL3019 = 3.3V?
1.0V at FB3102=1.0V? (NA ATSC3.0, JP)
1.0V at FB3103=1.0V(PA ISDB)
OK
All broadcasting channel
cannot be received?
OK
Analog
Refer Analog Tuning
SAFETY NOTES
Change RF cable and antenna
NG
NG
NG
Check part mounting condition
for I2C SDA & SCL line. (Refer Note I2C)
Terrestrial/Cable
Digital
For TW, NA-ATSC(MX/UC) *1
CH/HK, LA, PA, EU
Refer Digital Tuning 1
SELF DIAGNOSIS FUNCTION
Please refer DDCON
troubleshooting
OK
Satellite
Check LNB power line
12V at C3028 = 12V?
,
For JP, NA ATSC 3.0,
and PA ISDB
Refer Digital Tuning 2
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: Demodulator
- Digital Tuning 1 : SoC inside demodulator
- Digital Tuning 2 : On board demodulator
*1 : Except US ATSC3.0, Please refer Digital Tuning 2
NG
Change NG parts connected
to I2C bus
NG
OK
12V LNB Voltage Checking
DIAGRAM
70
HANDLING GUIDE
SYS SET