Sony KD-75X7800F Service Manual page 34

2.7 LED BLINKING: 7x (Temperature Error)
BCH
7-time blinking
Setting
No
circumstance is OK?
Set to another
Temperature,
location, etc.
Ventilation, etc.
Yes
Change B* Board,
NG
and Aging a few Panel
hours
Symptom
improvement
Yes
Check I2C_C bus
communication OK? Temp sensor
B* Board NG
(check the next page)
No
I2C_C bus dumping or
Muffin check
34
SYS SET