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SAFETY NOTES SELF DIAGNOSIS FUNCTION TROUBLESHOOTING SERVICE ADJUSTMENT DIAGRAM HANDLING GUIDE
TROUBLESHOOTING
4.4 No Picture at Tuner - FOR DIGITAL TUNING For US ATSC3.0 and Philippines
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
-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
: Insert correct signal in correct ANT terminal.
A
Notes: RST
- Parts for X_DEMOD_RST_STBY line:
R3109, C3117
Voltage confirmation point
C3117 = 3.3V
Can it preset Digital broadcast?
NG
No sound
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)
Digital Tuning 2
Confirm ANT or
Satellite connection
For JP
For NA ATSC3.0
and PA ISDB
OK
Change NG parts
NG
Sound is normal?
OK
Replace main
board
Replace main
board
OK
A
NG
NG
Check part mounting condition
for I2C SDA & SCL line.
(Refer Note I2C)
OK
Check the status of IC3001 peripheral
components
(UC ATSC 3.0, Philippines, JP)
Can it preset Analog broadcast?
NG
Change Tuner module
OK
Check part mounting condition
for X_DEMOD_RST_STBY line.
(Refer Note RST)
Change NG parts
Change NG parts
OK
OK
NG
SYSSET
2022/04/1901:21:05(GMT+09:00)
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