Sony XBR-55X850D Service Manual page 52

FLOW
4-4. NO PICTURE (@ TUNER)
FOR DIGITAL TUNING 2: @ AEP_W, JP_SKP, PA_T2, CH/HK, LA-ISDB(BR/AR) and LA-T2(COL)
For LA-ISDB(BR) and
LA-T2(COL) only
Confirm ANT or Cable connection
OK
Digital cable/ Terrestrial
Cable
Refer to Digital Tuning 1
Check part mounting condition for digital data line
XBR-55X850D/857D, 65X850D/855D/857D, 75X850D
Digital Tuning 2
For PA_T2 and
NG
CH/HK only
A
Terrestrial
OK
Sound is normal?
No sound
On Service
CASE B
mode display
TS_LOCK ?
UEC ?
CASE A
"TU1_TS_DATA0, TU1_TS_CLK,
TU1_TS_VALID, TU1_TS_SYNC"
NG
Change NG parts
For AEP-W
NG
Confirm ANT or Satellite connection
OK
All except SKP_Opticast
Check IC1000 (SoC)
Change Tuner module
(Refer to Note tuner )
OK
Check IC1000 (SoC)
TROUBLE SHOOTING
For JP_SKP
Confirm ANT or Satellite connection
A
OK
BS/CS or SKP_Opticast/
SKP_Premium or terrestrial
SKP_Opticast
Refer to Digital Tuning 1
Note:
- Parts for TU1_TS_DATA0 line: R6015, R6321.
- Parts for TU1_TS_CLK line: R6016, R6322.
- Parts for TU1_TS_VALID line: R6017, R6323.
- Parts for TU1_TS_SYNC line: R6018, R6324.
- CASE A : TS _LOCK = LOCK and UEC constant
- CASE B : TS _LOCK = UNLOCK or UEC is increasing
Note Tuner –
(IC reference -- destination)
TU6001 - PA-T2
TU6001 - LA-T2/LA-ISDB
TU6001 - CH, HK
TU6003 - AEP_W
TU6802 - JP_SKP
A
: Insert correct signal in correct terminal.
NG
A
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