Sony GN3TR - Page 39

XBR-49/55/65/75X900E
TROUBLE SHOOTING
FLOW
4-3. NO PICTURE (TUNER)
39
RF input no picture / noisy picture
Change RF cable and antenna
Please refer DDCON
troubleshooting
OK
OK
NG
NG
Check RF source cable
and antenna, OK?
Check Tuner power line:
3.3V at JL2800 = 3.3V?
1.8V at JL2801 = 1.8V?
A_RESET value at JL2807 = 3.3V?
All broadcasting channel
cannot be received?
NO
YES
Check part mounting condition
for I2C SDA & SCL line. (Refer Note I2C)
And
Check Tuner module connection.(CN2800)
Change NG parts
connected to I2C bus
NG
OK
Notes: I2C
I2C line for all tuners except Japan_SKP
- Parts for I2C SDA line: R2800, C2803.
- Parts for I2C SCL line : R2801, C2804.
I2C line for Japan_SKP
- Parts for I2C SDA line: R2804
- Parts for I2C SCL line : R2805
Analog
Refer Analog Tuning
Refer Digital Tuning 1
Digital
Check Tuner power line
12V at JL2822 = 12V?
Satellite
Refer Digital Tuning 2
NG
OK
12V LNB Voltage Checking
For TW, NA-ATSC(MX/UC),
JP_SKP(Opticast) and LA-ISDB-T
For AEP_W, JP_SKP, PA_T2,
CH/HK, and LA-T2(COL)
Terrestrial/Cable