Sony KD-55A8F Service Manual page 47

2018/03/16 22:32:44 (GMT+09:00)
4.4 NO PICTURE: @ TUNER
RF input no picture / noisy
picture
Check RF source cable
and antenna, OK?
Check Tuner power line:
3.3V at JL2800 = 3.3V?
1.8V at JL2801 = 1.8V?
RESET value at JL2807 = 3.3V?
All broadcasting channel
cannot be received?
Refer to next page
NG
OK
NG
*1
*1
OK
NG
for I2C SDA & SCL line. (Refer Note I2C)
OK
Change RF cable and antenna
Check part mounting condition
OK
Please refer DDCON
troubleshooting
NG
Change NG parts
connected to I2C bus
Notes: I2C
I2C line for all tuners except Japan
- Parts for I2C SDA line: R2800, C2803.
- Parts for I2C SCL line : R2801, C2804.
I2C line for Japan
- Parts for I2C SDA line: R2804
- Parts for I2C SCL line : R2805
It does not use 1.8V and RESET in the UC model
*1
47
SYS SET