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KDL-70X4500 (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.

- FBU board
   - CN4002 12V power and harness to G8 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.

Power Error (watching 12V rail)   

T-CON 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)

Contents

Display

(Self Diagnosis mode )

Red LED Blink 

POW_ERR1

T_CON

BACKLITE

PANELTEMP

AUD_PROT

FAN_ERR

BALANCER

2

5

6

7

8

9

13

KDL-70X4500 (K)     2-5

2-2-3-2. RED LED BLINKS (Chart C)

NO

2 times

YES

See  
1) Power Error

RED LED Blinks

NO

9 times

YES

See  
6) FAN Error

NO

NO

YES

7 times

YES

See  
4) TEMP Error

6 times

See  
3) BACK LIGHT Error

NO

8 times

YES

See  
5) AUDIO Error

13 times

YES

See  
7) Balancer Error

NO

5 times

YES

See  
2) T-CON Error

KDL-70X4500 (K)     2-6

1) Power Error (R ED 2 tim es blink )

This indicates POWER Error, Low B error of 12V from G8 board. TV Micro (on AU board)
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 AU board. And F1001 on AU has 12V or not.
   - Check G8 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 FBU 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 FBU board detects it.

BE Micro pin 78   Normal condition : High  /   Error case : Low

KDL-70X4500 (K)     2-7

4) Tem p Error (R ED 7 tim es blink )

This indicates high temperature inside chassis. IC1000 on AU board Side is monitoring
temperature. IC1000 is controlled by BEM I2C.

When it happens;
   - Check chassis environment.
   - Check around IC1000 and replace AU 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.

Check Voltage at CN1002 20pin on AU board. ( Low = Normal , High= Error)

   - Low Voltage at IC1800 [ Audio_Vcc(=12V) , A9V , D3.3V ]
   - Error of IC1800

Replace AU board.

.

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