Sony XBR-55X900H Service Manual page 16

2021/04/27 23:25:57 (GMT+09:00)
Triage Chart (NX2)
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
Reference
2
▲
Main Board
●
Power Board
Receiving Board
Speaker
Wifi & BT Module
Local Dimming
Board
V By One FFC
Tcon
LCD Panel
Power
Problem
SAFETY NOTES
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
3 4 5 6
● ● ■
▲ ▲ ▲
▲
▲
●
Panel
(Communic Panel
Power Panel ation) (Backlight)
Audio LD Tcon
SELF DIAGNOSTIC FUNCTION
T R O U B L E S H O O T I N G
TU_DEMO TU_DEMO
7 8 TCON_ERR FRCTC_I2C
D D_I2C
●
▲
TEMP 4KBE
TROUBLESHOOTING SERVICE ADJUSTMENT
Symptoms - no shutdown
Error log record only
AUD_ERR_ 4KPQ_ERR TEMP_ERR EARC_ERR
I2C _I2C _I2C _I2C
● ▲
●
DIAGRAM HANDLING GUIDE
8KBE_CO AMB_ER
M_ERR R_I2C
16
SYS SET