Sony KDL-55X4500 Service Manual ▷ View online
KDL-55X4500 (CH) 2-4
2-2-2. SET REBOOTS
TV micro (on ACW 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.
2-2-3. SELF DIAGNOSIS
2-2-3-1. RED LED BLINKS TABLE
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
KDL-55X4500 (CH) 2-5
2-2-3-2. RED LED BLINKS (Chart C)
NO
2 times
YES
See
1) Power Error
1) Power Error
RED LED Blinks
NO
9 times
YES
See
6) FAN Error
6) FAN Error
NO
5 times
YES
See
2) T-CON Error
2) T-CON Error
NO
6 times
YES
See
3) BACK LIGHT Error
3) BACK LIGHT Error
NO
7 times
YES
See
4) TEMP Error
4) TEMP Error
NO
8 times
YES
See
5) AUDIO Error
5) AUDIO Error
13 times
YES
See
7) Balancer Error
7) Balancer Error
KDL-55X4500 (CH) 2-6
1) Power Error (R ED 2 tim es blink )
This indicates POWER Error, Low B error of 12V from G6 board. TV Micro (on ACW board)
monitors pin79 and pin138 to detect POWER_ERR and shuts down chassis power to
Standby status.
monitors pin79 and pin138 to detect POWER_ERR and shuts down chassis power to
Standby status.
TV Micro pin138
Normal condition : Low / Error case : High
TV Micro pin79 i_lb_err< 0.7V(PW_ERR_LEV)
- Check 12V at CN 1000 on ACW board. And F1001 on ACW has 12V or not.
- Check G6 board.
- Check G6 board.
2) T-CON Error (R ED 5 tim es blink )
This indicates T-CON RDY signal error from timing controller of Panel module.
BE micro pin128 on FBA board detects it.
BE micro pin128 on FBA board detects it.
BE Micro pin128 Normal condition : High / Error case : Low
Replace Panel module.
3) B ack Light Error (R ED 6 tim es blink )
This indicates panel power circuit error such as inverter.
BE micro pin 78 on FBA board detects it.
BE micro pin 78 on FBA board detects it.
BE Micro pin 78 Normal condition : High / Error case : Low
Replace D4 board in case of GL board in case of LED model.
KDL-55X4500 (CH) 2-7
4) Tem p Error (R ED 7 tim es blink )
This indicates high temperature inside chassis. IC1000 on ACW board Side is monitoring
temperature. IC1000 is controlled by BEM I2C.
temperature. IC1000 is controlled by BEM I2C.
When it happens;
- Check chassis environment.
- Check around IC1000 and replace ACW board if temperature monitoring circuit has problem.
- Check chassis environment.
- Check around IC1000 and replace ACW board if temperature monitoring circuit has problem.
5) Audio Error (R ED 8 tim es blink )
This indicates Audio Error. (Protection)
It happens;
- Error of Speakers and Harness.
- Digital amp on K2 Board are High Temperature.
- Error of Speakers and Harness.
- Digital amp on K2 Board are High Temperature.
Check Voltage at CN1002 20pin on ACW board. ( Low = Normal , High= Error)
If Error , Replace Speaker or Harness or K2 board.
If Error , Replace Speaker or Harness or K2 board.
- Low Voltage at IC1800 [ Audio_Vcc(=12V) , A9V , D3.3V ]
- Error of IC1800
- Error of IC1800
Replace ACW board.
.
.
6) FAN Error (R ED 9 tim es blink )
This indicates FAN error. (except 40 inch model)
BE micro pin154 on FBA board detects it.
BE micro pin154 on FBA board detects it.
BE Micro pin154 Normal condition : Low / Error case : High
- Check the harnessconnection of FAN.
- Check the Voltage at CN1301 on ACW board. ( Low = Error , High = Normal)
- Check the Voltage at CN1301 on ACW board. ( Low = Error , High = Normal)
Replace the FAN.
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