Sony KDL-32EX725 / KDL-40EX725 / KDL-55EX725 Service Manual ▷ View online
KDL-32EX725/40EX725/55EX725
35
SECTION 4 - TROUBLESHOOTING
VIEWING THE SELF CHECK DIAGNOSTIC HISTORY
It is possible to bring up past occurrences of a failure for confirmation
on the Self Check diagnostic history screen. This feature is useful for
failures which are intermittent or when the customer is not sure what
is causing the television to shut down.
1. TV must be in standby mode. (Power off).
2. Press the following buttons on the Remote Commander
within a second of each other:
3.
DISPLAY
Channel
5
Volume
-
POWER
.
* NOTE: This differs from accessing Service Adjustments Mode
(Volume +)
Total operation time by hour (MAX:65535)
Boot count (MAX:65535)
Panel operation time by hour (MAX:65535)
Total operation time by hour (MAX:65535)
Boot count (MAX:65535)
Panel operation time by hour (MAX:65535)
-------------- -------------- -------------- 01
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
002 MAIN_POWE
003 DC_ALERT
003 AUD_PROT
004 BALANCER
005 HFR_ERR
005 P_ID_ERR
12345-00333-06789
12345
-
00333
-
06789
-
-
-------------- -------------- -------------- 00
006 VLED
-------------- -------------- -------------- 00
005 TCON_ERR
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
006 BACKLITE
007 TEMP_ERR
010 EMITTER
-------------- -------------- -------------- 00
007 FAN_ERR
-------------- -------------- -------------- 00
012 IA
-------------- -------------- -------------- 00
SELF CHECK
StandBy LED Flash Count
Diagnostic Item
Diagnostic Item
Error Count
(00-99)
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
101 VPC_WDT
-------------- -------------- -------------- 00
102 MEPS_WDT
-------------- -------------- -------------- 00
103 HOST_WDT
-------------- -------------- -------------- 00
104 STBY_WDT
-------------- -------------- -------------- 00
000 RGB_SEN
000 RESERVED
000 RESERVED
FIGURE 4-4. SAMPLE SELF CHECK DIAGNOSIS PAGE
CLEARING THE SELF CHECK DIAGNOSTIC LIST
Since the diagnostic results displayed on the screen are not
automatically cleared, always check the self-diagnostic screen after
you have completed the repairs to be sure you have cleared the
result display to “0”.
1. To clear the Error history and Error count
press
8
0
.
RESETTING THE LCD PANEL OPERATING HOURS
The 3 sets of numbers displayed on the lower left corner of the screen
indicates the total accumulated operating hours of the television and
the operating hours of the LCD panel. Total operating hours is on the
left, boot count in the center and panel hours in the right group (The
center numbers are not used.)
1. To clear the LCD Panel operating hours of the LCD
Panel after replacing the panel, press
7
0
.
EXITING THE SELF CHECK DIAGNOSTIC SCREEN
1. To exit the Self Diagnostic screen, turn off the power to
the TV by pressing the
POWER
button on the remote
or the
POWER
button on the TV.
KDL-32EX725/40EX725/55EX725
36
SECTION 5 - FLOW CHARTS AND DIAGRAMS
OVERVIEW
The following flow charts provide information to determine what repair parts to order based on the TV error.
KDL-32EX725/40EX725/55EX725
37
SECTION 5 - FLOW CHARTS AND DIAGRAMS
NO POWER
G10A (32")
G4B(40")
G5(46")
G6A(55")
LCD
PANEL
TCON
(120Hz)
LCD Panel Assembly
LCD
Panel
BATV
G8A
LD
LED
Backlights
LD
19V
24V
24V
+109V
-61V to -82V
55" Models
32", 40", 46" Models
STBY
3.3V
Power-ON
3V
TCON-ON
3V
AC-OFF-Detect
3V
TCON
12V
AC
Input
IR Sensor
5V
Motion Sensor
5V
23
39
STBY 3.3V
33
7
1
8
10
12
12
1
1
2
18
14
1
8
10
49
HMS3
HLR2
Wireless
WIFI
1
2
110VAC
CN6502
CN6801
CN6704 (32")
CN6151 (40",46")
CN6101 (55")
CN6701
CN6700
CN1002
CN1002
CN6002
CN2001
CN9006
3
CN6001
1
18
400V
1
18
12V
CN6501
CN6102
CN6601
CN6600
16
3
1
24
AU12V
REG 12V
TCON
12V
8
9
3
CN6001
14
12
LED-ON
LED-ON &
BL Control
3D Emitter
HEM2
1
12V
12
1
LED-ON
These voltage levels will vary slightly due
to panel size (40" Panel Levels shown).
CN1001
CN1000
1
1
CN1001
CN1000
1
1
FIGURE 5-1. POWER SUPPLY DIAGRAM
KDL-32EX725/40EX725/55EX725
38
SECTION 5 - FLOW CHARTS AND DIAGRAMS
Is
“Standby” LED
illuminate steady
RED?
Does the
“Power” LED
Light Green
?
No
Yes
No
Press Remote
Power Button
Initial Power-ON OK
Troubleshoot Video,
Backlight, Panel, or Audio
Problem
Check
STBY 3.3V
(In STBY Mode)
Confirm TV is
securely plugged into
an
Active AC Outlet
Is
110VAC Present
at
CN6001
?
Repair AC Outlet or
Replace AC-Power Cord
OK
Yes
Check Main Fuse
F6101
Is
voltage
3.3V
Present
?
Yes
Is Fuse
Open?
No
Yes
No
Replace
Main Board
Replace
Power Supply
Board
Replace
Power Supply
Board
Check
AC-OFF-Detect
(In STBY Mode)
Is
voltage
3.3V
Present
?
Replace
Power Supply
Board
No
Yes
Press TV
Power Button
Does the
“Power” LED
Light?
Yes
No
Replace
Remote Batteries or
Remote
Replace
Main Board
No
Yes
Power Error
FIGURE 5-2. NO POWER
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