Sony XR-55A75L Service Manual page 17

TROUBLESHOOTING
Triage Chart: XR-83A80*
Before you make the service call:
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:
: Most likely defective part

: Secondary possible defective part

Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
Reference
2 3 4 5
Main Board
■
 
■
Power Board ■
  ■
Receiver Board
Actuator

(Panel module)
Speaker

(Sub woofer)
Wi-fi & BT
Module
V By One FFC

T-con
▲

(Panel module)
OLED Panel
●
▲
(Panel module)
Camera
(accessory)
Panel Panel
Power Power module (Communication)
Problem
T-con
Audio Power T-con
■
: Tertiary possible defective part
BLACK TEXT: Board that may correct the symptom
Symptoms - no shutdown
Error log record only
TU_
TU_ TCON_ FRCTC
6 7 8 DEMOD
DEMOD ERR _I2C
_I2C
■
●
 
▲
▲

Panel
Power TEMP 4KBE
No
Power
No White
Power LED &
AUD_ 4KPQ TEMP_ EARC 8KBE AMB_
does not
ERR_ _ERR ERR_I2 _ERR _COM ERR_
respond to
I2C _I2C C _I2C _ERR I2C
remote (Dead
Set)
▲
  

●
 
Video
Remote Network Audio
- missing or distorted
Stationary No No Cannot
No No
colored video NO RF video connect to
video of Remote
lines or One of input all Wireless
Camera Operation
dots Inputs Inputs Network
      



 
 ■
 ■

Smart Bluetooth
Core (BT)
Bluetooth /
Smart Core
One Step
No no LED
Remote
Audio (Set is still
(OSR) can't
alive)
connect
  





17
SYS SET