Troubleshooting; Triage Chart - Sony XR-55A90J Service Manual

2021/02/04 23:38:48 (GMT+09:00)

Triage Chart

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
RED DOT: Most likely defective part
BLUE TRIANGLE: Secondary possible defective part
GREEN SQUARE: Tertiary possible defective part
BLACK TEXT: Board that may correct the symptom
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
Reference
2 3 4
■
Main Board B* Board  
■
Power Board G* Board 

Receiver Board
H* Board
Actuater

(Panel module)
Speaker

(Sub woofer)
Wifi & BT Module
V By One FFC
Tcon
▲
(Panel module)
OLED Panel
●
(Panel module)
TSP Board
Panel
Power Power module
Problem
Tcon
Audio Power
SAFETY NOTES
TU_DEMO TU_DEMO TCON_ER
5 6 7 8
D D_I2C
■
●
 
■
▲
■


▲

▲
Panel
(Communicati Panel
on) Power TEMP 4KBE
Tcon
SELF DIAGNOSTIC FUNCTION
T R O U B L E S H O O T I N G
Symptoms - no shutdown
Error log record only
FRCTC_I2 AUD_ERR 4KPQ_ER TEMP_ER EARC_ER 8KBE_CO
R C _I2C R_I2C R_I2C R_I2C M_ERR
  



TROUBLESHOOTING

SERVICE ADJUSTMENT
Chassis : AS Segment
Video
No
Remote
Power - missing or distorted
No White
Power LED &
Stationary
AMB_ERR
does not No video One No video all
c olored lines NO RF input No Remote
_I2C reponse to of Inputs Inputs
or dots
remote (Dead
Set)
▲
    


●

 

■

■
DIAGRAM
Smart Bluetooth
Network Audio
Core (BT)
Cannot Bluetooth /
Smart Core no
c onnec t to One Step
No Audio LED (Set is
Wireless Remote (OSR)
still alive)
Network c an't c onnec t
    

 


 
19
19
HANDLING GUIDE
SYS SET