Sony KDL-46X4500 / KDL-55X4500 (serv.man2) Service Manual ▷ View online
KDL-46/55X4500 (K) 2-1
SECTION 2
TROUBLESHOOTING
2-1. TRIAGE CHART
Reference
Symptoms - (dead set)
Video - distorted or missing
2
3
5
6
7
8
9
13
No Video
No Video
No Video
No Tuner
Blinks
Blinks
Blinks
Blinks
Blinks
Blinks
Blinks
Blinks
No Power
BL OK
No BL
BL OK
Video OK
No HDMI No Audio
OSD OK
No OSD
AU Board
FBU Board
CB1 Board (46"/55")
G6/G7 Board (55")
GL Board (46"/55")
Panel Module
LVDS cable between FBU Board
and CB1 Board
Joint connector of AU Board and
FBU Board
Flowchart Reference
FBU Board
CB1 Board (46"/55")
G6/G7 Board (55")
GL Board (46"/55")
Panel Module
LVDS cable between FBU Board
and CB1 Board
Joint connector of AU Board and
FBU Board
Flowchart Reference
C
C
C
C
C
C
C
C
B
E
E
E
E
E
D
Problem
Low B+ DC_ALERT1 T-CON
BL
Temp
Audio
FAN
Balancer
: Doubtful part
: just a few possibility
: just a few possibility
KDL-46/55X4500 (K) 2-2
Trouble
YES
Set Power
NO
Self diagnosis
See
2-2-1. No Power
2-2-1. No Power
(Chart B)
YES
See
2-2-3. Self Diagnosis
2-2-3. Self Diagnosis
(Chart C)
NO
See
2-2-4. Audio Problem
2-2-4. Audio Problem
(Chart D)
See
2-2-5. Video problem
2-2-5. Video problem
(Chart E)
Audio
Video
YES
Set Reboots
-
NO
See
2-2-2. Set Reboots
2-2-2. Set Reboots
2-2. FLOW CHART
KDL-46/55X4500 (K) 2-3
2-2-1. NO POWER (Chart B)
YES
No RED LED
Blinks
NO
5VDC
CN4002 7pin
on FBU board
See
RED BLINKS
(Chart C)
RED BLINKS
(Chart C)
NO
G6 board
(No STBY5V)
(No STBY5V)
YES
NO
110-240VAC
CN6000 on
G6 board
YES
AC cable or AC inlet
No Power
(No relay clicks)
YES
Power key
doesn’t work
NO
H1VM board
AU board
KDL-46/55X4500 (K) 2-4
2-2-2. SET REBOOTS
TV micro (on AU board) is monitoring if BE Micro & EMMA (on FBU board) are alive
or on abnormal status by watch dog timer. When BEM or EMMA has not boot up, TVM
try to re-start. We can see chassis reboot at this case. Check whether FBU board is
supplied with correct power or not.
or on abnormal status by watch dog timer. When BEM or EMMA has not boot up, TVM
try to re-start. We can see chassis reboot at this case. Check whether FBU board is
supplied with correct power or not.
- FBU board
- CN4002 12V power and harness to G6 board.
- F2800, F4100, F4101, F4102, F5400, F7800, F7801 conduction.
- CN4002 12V power and harness to G6 board.
- F2800, F4100, F4101, F4102, F5400, F7800, F7801 conduction.
If power rail has no problem, replace FBU board.
2-2-3. SELF DIAGNOSIS
2-2-3-1. RED LED BLINKS TABLE
When self diagnosis happens, STBY (RED) LED blinks and
the history can be seen on display by self diagnosis mode.
the history can be seen on display by self diagnosis mode.
The number of standby LED
(RED) blinking
(RED) blinking
Item
2 times
Main Power Error
3 times
Power Error2
5 times
Panel Error
6 times
Backlight Error (Panel Inverter)
7 times
Panel TEMP. Error
8 times
Audio Error
9 times
Fan Error
13 times
Panel Balancer Error
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