Troubleshooting; Triage Chart; Before You Make The Service Call - Sony KD-55A9G Service Manual

2019/04/19 01:55:00 (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 Colour 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
B* Board
p l p
G* Board l p p
H* Board
Actuater
p
(Panel module)
Speaker
p
(Sub woofer)
Wifi & BT Module
V By One FFC
Tcon
l
(Panel module)
OLED Panel
p
(Panel module)
Power Power Tcon
Problem Tcon
Audio Power
Symptoms - no shutdown
Error log record only
TU_
TU_ TCO
DEM
5 6 7 8 DEM N_E
OD_I
OD RR
2C
■ p p l l l
l
■
l
p
l
■ l
Panel Panel
(Communication) Power TEMP 4KBE
SECTION 3

TROUBLESHOOTING

No
Power - missing or distorted
Stationa
AUD 4KP TEM EAR
No White Power
FRCT
ry No video
_ER Q_E P_ER C_ER
LED & does not
C_I2
colored One of
R_I2 RR_I R_I2 R_I2 reponse to remote
lines or
C
(Dead Set)
C 2C C C
dots
l p l p p
l
p
l
p
p
l
CHASSIS:
Video
Remote Network Audio
Wireless
NO RF No video all
No Remote can't No Audio
input Inputs
Inputs connect
l l l p p l
p p
l
l
l
l
p
■
■
SP
Smart Core Bluetooth (BT)
Bluetooth / One Step
Smart Core no LED (Set
Remote (OSR) can't
is still alive)
connect
p p
l
l
19 19
SYS SET