Sony KDL-40X4000 / KDL-46X4000 / KDL-52X4000 (serv.man2) Service Manual ▷ View online
KDL-40/46/52X4000 (WB) 2-1
SECTION 2
TROUBLESHOOTING
2-1. TRIAGE CHART
Symptoms - (dead set)
Video - distorted or missing
2
5
6
7
8
9
13
No
No Video
No Video
No Video
No Tuner
No
Reference
Blinks
Blinks
Blinks
Blinks
Blinks
Blinks
Blinks
Power
BL OK
No BL
BL OK
Video
No HDMI
Audio
OSD OK
No OSD
ACW-TW Board
FBA Board
G6 Board
D3(40"/46") / D4(52") / D5(52")
Board
Panel Module
LVDS cable between FBA Board
and Panel
Joint connector of ACW-TW
Board and FBA Board
Flowchart Reference
FBA Board
G6 Board
D3(40"/46") / D4(52") / D5(52")
Board
Panel Module
LVDS cable between FBA Board
and Panel
Joint connector of ACW-TW
Board and FBA Board
Flowchart Reference
C
C
C
C
C
C
C
B
E
E
E
E
E
D
Problem
Low B+ T-CON
BL
Temp
Audio
FAN
Balancer
: Doubtful part
: just a few possibility
: just a few possibility
KDL-40/46/52X4000 (WB) 2-2
2-2. TROUBLE SHOOTING FLOW CHART
Trouble
YES
Set Power
NO
Self diagnosis
See
2-3. No Power
2-3. No Power
(Chart B)
YES
See
2-5. Self Diagnosis
2-5. Self Diagnosis
(Chart C)
NO
See
2-6. Audio Problem
2-6. Audio Problem
(Chart D)
See
2-7. Video problem
2-7. Video problem
(Chart E)
Audio
Video
YES
Set Reboots
-
NO
See
2-4. Set Reboots
2-4. Set Reboots
KDL-40/46/52X4000 (WB) 2-3
YES
No RED LED
Blinks
NO
5VDC
CN2800 7pin
on FBA board
See
RED LED BLINKS
(Chart C)
NO
G6 board
(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
SWITCH Unit
ACW-TW board
2-3. NO POWER (Chart B)
KDL-40/46/52X4000 (WB) 2-4
TV micro (on ACW-TW board) is monitoring if BE Micro & EMMA (on FBA 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 FBA 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 FBA board is
supplied with correct power or not.
- FBA board
- CN 2800 12V power and harness to G6 board.
- F2800, F4100, F4101, F4102, F5400, F7800, F7801 conduction.
- CN 2800 12V power and harness to G6 board.
- F2800, F4100, F4101, F4102, F5400, F7800, F7801 conduction.
If power rail has no problem, replace FBA board.
Power Error (watching 12V rail)
T-CON Error
[CCFL] Panel Inverter Error
[CCFL] Panel Inverter Error
[LED] GL board Error
Panel Temperature Abnormal Detection
Audio Abnormal Detection
FAN Error -> Not detect (reboot operation)
[CCFL] Panel Balancer Error
[LED-BL] SPI Error (Babylon Communication Error)
[LED-BL] SPI Error (Babylon Communication Error)
Contents
Display
(Self Diagnosis mode )
Red LED Blink
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.
POW_ERR1
T_CON
BACKLITE
PANELTEMP
AUD_PROT
FAN_ERR
BALANCER
2
5
6
7
8
9
13
2-4. SET REBOOTS
2-5. SELF DIAGNOSIS
2-5-1. RED LED BLINKS TABLE
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