Trouble Shooting; Triage - Sony X850E Series Service Manual

TROUBLE SHOOTING

TRIAGE

1. Confirm the symptom from the customer.
2. Select that symptom from the chart.
3. Bring all the boards and cables listed for that symptom.
4. Follow the troubleshooting charts in the technical guides to isolate the board.
5. Chart Color Code.
RED DOT: Most likely defective part
BLUE TRIANGLE: Secondary possible defective part
BLACK TEXT: Board that may correct the symptom
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
Reference
2 3 4
B* Board p l
G* Board p
l
H* Board
Speaker p
Tuner board
Wifi & BT
Module
V By One FFC
Tcon
LCD Panel
Panel
Power Power LD (Communication)
Problem
Audio BCM
XBR-65/75X850E
Symptoms - no shutdown
Error log record only
TU_
TCON FRCTC
5 6 7 8 DEM
_ERR _I2C
OD
p p l l p p l
p
l
l
p p
l l
p l p
Panel
(Backlight) TEMP 4KPQ
Video
No
Power - missing or distorted
No White Power
Stationary
AUD_ 4KPQ_
LED & does not No video
colored
ERR_ ERR_ respond to One of
lines or
remote (Dead Inputs
I2C I2C
dots
Set)
l l p p l
l
p
p
p
p
l
Remote Network Audio
NO RF No video Wireless
No Remote No Audio
input all Inputs can't connect
l l p p
p
l
l
l
p
p
p
Smart Core Bluetooth (BT)
Bluetooth / One
Smart Core no LED
Step Remote (OSR)
(Set is still alive)
can't connect
l p p
l
l
l
18