Sony KDL-65S990A Service Manual ▷ View online
KDL-65S990A 5
SECTION 2 - TROUBLESHOOTING
TRIAGE CHART
Use this general Triage Chart to determine what may possibly be causing the error before going out to the customers location.
1. Confirm the symptom from the customer.
Red Dot: (Primary) Most likely defective part.
2. Select that symptom from the chart.
Blue Triangle: (Secondary) Possible defective part.
3. Bring the primary component listed for that symptom.
5. Chart Color Code.
LAN Power
Audio
2X 3X 4X 5X 6X 7X 8X No
WIFI
Dead set
No
Video
Whole
Screen
Distortion
Isolated
Area
Distortion
No Audio
MAIN BOARD
*
▲ ▲
▲
▲
POWER SUPPLY
LCD Panel
TCON
▲
▲
SERVICE BULLETIN
▲
SOFWARE UPDATE
WLAN
Video
Protection Modes
4. Follow the associated flowcharts in the Training Manual to isolate the board.
Board
* Immediate Shutdown After Power ON & 7X
*NOTE: REFER TO LCD PANELS SERVICE MANUAL IN
REFERENCE LIBRARY DATABASE FOR CORRECT
REPLACEMENT PARTS BASED ON SERIAL NUMBER.
To access the most recent version of the Triage documents for the models listed in this manual, login into the Sony Authorized Servicer Portal at
http://www.sony.com/asp
.
KDL-65S990A 6
SECTION 2 - TROUBLESHOOTING
FLOWCHARTS AND DIAGRAMS
OVERALL BLOCK DIAGRAM
POWER SUPPLY
POWER SUPPLY
VIDEO 2 CVBS/COMP
VIDEO 1 CVBS
RF
HDMI 1
LCD PANEL
HFR
TCON
L
R
OPTICAL
AUDIO OUT
HDMI 3
TUNER
ETHERNET
USB2.0
HDMI 2
AC IN
LED DRIVE
LD
L
R
USB2.0
MAIN BOARD
IC9001
HP/LINE OUT
HDMI
SWITCH
EQ
USB2.0
BA2SC
G6
G7B
BLUETOOTH
MODULE
SWITCH
UNIT
A/V
DECODER
VIDEO
PROCESS
IC9000
LVDS
HDMI 4
AUDIO
AMP
HSC-CM_BT
BOARD
MOUNTED
WLAN
MODULE
HW BOARD
MOUNTED
HIR
BOARD
MOUNTED
HSC-NO_BT
WIFI BOARD
MOUNTED
K BOARD
AUDIO
AMP
1
AUDIO
AMP
2
KDL-65S990A 7
SECTION 2 - TROUBLESHOOTING
POWER AND CONTROL BLOCK DIAGRAM
BL_ERR
LD_ERR
BL_ON
1
2
3
4
2
3
4
AC IN (N)
AC IN (L)
1
2
2
CN6402
CN6401
CN6101
AC-L
3
AC-N
1
1
2
3
4
2
3
4
CN6102
CN6602
3
1
CN6101
VLED_VCC
GL_CTRL
VLED_GND
LD_ERR
1~4
6~9
11
12
12
REG_12V
14
LD
BOARD
DIGITAL_STBY
CN6601
2
5
AU_GND
28
STBY3.3V
AC_OFF_DET
BL_ERR
3
DIGITAL_STBY
REG_12V
25
27
GND
REG 12V
5
6
5
6
CN9101
BA2SC
G6
MAIN POWER AND
CONVERTER
MAIN BOARD
PFC, PRI_VCC AND
STANDBY POWER SUPPLY
BL_ON
10~11
16
GND
POWER_ON
20
5
4
STBY3.3V
AC_OFF_DET
BL_ERR
DIGITAL_STBY
REG_12V
BL_ON
GND
POWER_ON
G7B
14~15
9
REG_12V
GND
REG_12V PANEL
GND
1
2
2
4
7~9
11
12
12
13~14
15
16
18
16
18
KDL-65S990A 8
SECTION 2 - TROUBLESHOOTING
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 19
.
NO POWER FLOWCHART
No Power
Is Standby LED
blinking?
No
Yes
No
See Stanby
LED Blinking
Flowchart
Yes
Does red
Standby LED on
front panel light?
High (>2.5V)
on Pin 27 of CN6401
on Power Supply?
Yes
No
Main Board*
Press power
button while
monitoring Pin 28
of CN6401 on
Power Supply
Board.
High (3.3V)
appears
momentarily?
Yes
No
Power Supply
Board*
Power Supply
Board*
Power Supply
Board*
Remove AC power and
wait at least 30
seconds before
reapplying.
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