DOWNLOAD Sony KDL-50R550A / KDL-60R520A / KDL-60R550A / KDL-70R550A Service Manual ↓ Size: 4.15 MB | Pages: 36 in PDF or view online for FREE

Model
KDL-50R550A KDL-60R520A KDL-60R550A KDL-70R550A
Pages
36
Size
4.15 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-50r550a-kdl-60r520a-kdl-60r550a-kdl-70r550a.pdf
Date
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Sony KDL-50R550A / KDL-60R520A / KDL-60R550A / KDL-70R550A Service Manual ▷ View online

KDL-50R550A/60R520A/60R550A/70R550A 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    5X     6X   
No 
WIFI    Dead set
No 
Video             
Whole 
Screen 
Distortion
Isolated 
Area 
Distortion                            
No Audio          
MAIN BOARD
▲
▲
▲
 
POWER SUPPLY
LCD PANEL
TCON
▲
▲
WLAN
▲
▲
Video                  
Protection Modes
4.  Follow the associated flowcharts in the Training Manual to isolate the board.
Board 
*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-50R550A/60R520A/60R550A/70R550A 6
SECTION 2 - TROUBLESHOOTING
FLOWCHARTS AND DIAGRAMS
OVERALL BLOCK DIAGRAM
KDL-50R550A 
COMPONENT/
COMPOSITE
RF
COMPOSITE
HDMI 1 (ARC)
PC HD15
POWER SUPPLY
SWITCH
UNIT
IR RX
LIGHT SENSOR
LCD PANEL, TCON 
LED BACKLIGHTS
A
H
L
R
ANALOG AUDIO OUT
OPTICAL AUDIO OUT
MT5396
A/V DECODER
A/V PROCESS
TUNER
USB 1
HDMI 2 (MHL)
LVDS
AC IN
CLASS D 
AUDIO
AMP
G4 (50”)
HDMI 3
HDMI 4
ETHERNET
USB 2
LVDS
LD
MAIN BOARD
LED
PC IN R/L (AUDIO)
AMP
HEADPHONE AUDIO OUT
WIFI
&
KDL-50R550A/60R520A/60R550A/70R550A 7
SECTION 2 - TROUBLESHOOTING
KDL-60R520A/60R550A/70R550A 
RF
HDMI 1 (ARC)
PC HD15
POWER SUPPLY
SWITCH
UNIT
IR RX
LIGHT SENSOR
A
H
L
R
ANALOG AUDIO OUT
OPTICAL AUDIO OUT
MT5396
A/V DECODER
A/V PROCESS
TUNER
USB 1
HDMI 2 (MHL)
LVDS
AC IN
CLASS D 
AUDIO
AMP
GE60 (60”)
HDMI 3
HDMI 4
ETHERNET
USB 2
LVDS
MAIN BOARD
LED
PC IN R/L (AUDIO)
AMP
HEADPHONE AUDIO OUT
WIFI
GE70 (70”)
LCD PANEL, TCON 
LED BACKLIGHTS
&
COMPONENT/
COMPOSITE
COMPOSITE
KDL-50R550A/60R520A/60R550A/70R550A 8
SECTION 2 - TROUBLESHOOTING
POWER AND CONTROL BLOCK DIAGRAM
KDL-50R550A
STBY3.3V
AUDIO_12V GND
AC_OFF_DET
POWER_ON 
1
2
3
4, 5
BL_ERR
REG12V_GND
AUDIO 12V
6, 7
8
12
BL_ON
PWM DIMMER
N/C
13
14
15
AC IN (N)
AC IN (H)
1
2
CN6401
A
REG 12V
GND
AUDIO_12V
2, 7
6
BL_ERR
1
12
CN201
TCON_12V
AC_OFF_DET
13
14
BL_ON
3, 8
STBY 3.3V
POWER_ON
4
G4 (50”)
CN6101
LCD PANEL, TCON
&
LED BACKLIGHTS
BL_ON
12
N/C
13
14
UNREG 24V
1~5
GND
BL_ERR
6~10
11
CN6402
LD
POWER SUPPLY
MAIN BOARD
PWM DIMMER
REG 12V
9~11
5
BL PWM
GND
9, 11
10
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