Sony KDL-60EX725 Service Manual ▷ View online
KDL-60EX725 32
SECTION 5 - FLOW CHARTS AND DIAGRAMS
STANDBY LED BLINKING
Protect
Shutdown.
Standby LED
Blinking
No
Yes
G6 Board
No
Yes
2X
Main Board
3X
4X
No
Momentary
Backlight
5X
Yes
6X
No
7X
Imediately
LCD Panel
TCON Board
LCD Panel
Yes
No
After a while
Main Board
Check
ventilation
G6 Board
TCON Board
G8 Board
LED Drive Board
Check
LED-ON to
LED Drive Board
*Before Shutdown
Is voltage
3V before
Shutdown?
No Backlight
No
Yes
FIGURE 5-3. PROTECTION SHUTDOWN FLOWCHART
KDL-60EX725 33
SECTION 5 - FLOW CHARTS AND DIAGRAMS
NO PICTURE OR SOUND
BATV
IC9000
X-Reality
(HDCP)
LCD Panel Assembly
TCON/HFR
(240Hz)
LED Backlight
System
CN2001
NAND FLASH
User Data
White Balance
GAMMA
User Menu (XMB)
Service Mode
LCD Panel
LVDS Cable
RF Input
Video 2
(Component / Composite)
Video 1 (Composite)
PC Input
HDMI IN 1
(ARC)
HDMI IN 2
HDMI IN 3
IC5500
HDMI
Switch
&
EQ
(EDID)
RJ45 (Ethernent)
USB 2.0
HDMI IN 4
IC1404
NTSC/ATSC
Tuner IC
14
/
42
Digital Video
Interface
Interface
USB 2.0
Interface
R
L
IC4601
Output
Amplifier
LR
Audio
CN4602
Headphone/Analog
Audio Output
Digital Audio
Output (Optical)
SPDIF
CN2700
J2702
IC4502
OPAMP
LR
Audio
Video
Audio
Video
Audio
Video
Video
Audio
Video
Video
Audio
Video
Audio
Video
Audio
Video
Video
Audio
Video
Video
Audio
To HDMI 1 for
ARC Output
From SPDIF Output
(Optical)
LED Drive
Board
FIGURE 5-4. VIDEO/AUDIO PROCESSING DIAGRAM
KDL-60EX725 34
SECTION 5 - FLOW CHARTS AND DIAGRAMS
Missing or
Distorted Video
Is
Video Missing or
Distorted on
All
Inputs?
No
Yes
No
Can
User Menu be
Displayed?
No
Is Video
Missing or
Distorted?
Missing
Distorted
Is
Single Pixels
or
Complete Line
of Pixels
missing?
Yes
No
Yes
Is
Distortion
Present in
User Menu
OSD?
No
Yes
Is
External Device
& connection
OK?
Repair External
Device
Check
External Device
and Connections
Swap Devices and
connections
Skew (or Rock) the LVDS
connector from its socket
at the TCON Brd.
Are flashes
of color
displayed?
Yes
No
Check LVDS cable
for Physical Damage
Replace
LCD Panel
Replace
TCON Board
Replace
LVDS Cable
Yes
Sharp Horizontal
or Vertical Lines
Cable OK
Does
Distortion follow
picture size
when changing
WIDE mode?
Perform WIDE Mode Test
Replace
TCON Board
No
Yes
Replace
Main Board
Replace
Main Board
Replace
Main Board
Replace
Main Board
Replace
Main Board
NG
FIGURE 5-5. MISSING OR DISTORTED VIDEO FLOWCHART
KDL-60EX725 35
SECTION 5 - FLOW CHARTS AND DIAGRAMS
Is Audio
Present?
Check
HP Audio Output
No
Missing or Distorted Audio
Is Audio
Missing or Distorted
on
All Inputs?
No
Yes
Yes
Check
Speaker Resistance at
(across Speakers)
& Connections
8 ohms
&
Connections
OK?
No
Check
AU12V from Power Supply
Is
12V
Present?
Yes
Yes
Replace
Speaker(s)
No
No
Yes
Is
External Device
& connection
OK?
Repair External
Device
Check
External Device
and Connections
Swap Devices and
connections
Replace
Main Board
Replace
Power Supply
Board
Replace
Main Board
Replace
Main Board
FIGURE 5-6. MISSING OR DISTORTED AUDIO FLOWCHART
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