Tuesday, February 02, 2016

SONY KLV-32D300A - KLV-40D300A - KLV-46D300A Service mode - LED blinking code Service adjustments - LCD Television repair and service

Category: LCD Television Repair and Service 

Contents of this article 

  • How to access service mode 
  • LED blinking code and causes 
  • White balance adjustment 



SONY KLV-32D300A - KLV-40D300A - KLV-46D300A

DIAGNOSTIC TEST INDICATORS
If there is more than one error, the LED will identify the first of the problem areas. Result for all of the following diagnostic items are displayed on screen. If the screen displays a “0”, no error has occurred .
LED EROOR CODES AND CAUSES 
Number of times STANDY LED (Red) flashes
Monitoring Items (Screen Display)
Diagnostic Item Description
2 times
DC_DET
Main power supply voltage error (12V, etc)
3 times
DC_ALERT1
Malfunction of 3.3V line (Trident circuit, etc)
4 times
DC_ALERT2
Malfunction of 5V line (Voltage Supply to FE, etc)
5 times
DC_ALERT3
Malfunction of power supply for screen
6 times
BACKLIGHT
Malfunction of inverter or overcurrent, etc
7 times
TEMPERATURE
Abnormal temperature inside unit
8 times
AUDIO
Audio circuit error (amplifier, etc.)
9 times
AUSD FAN
Fan malfunction
10 times
DEF
Digital FE circuit error
11 times
B-ENGINE
Malfunction of Trident IC or around IC
12 times
HFR
BH board error *1
13 times
(No item on screen display)
Malfunction of balancer
SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurrences of failure for confirmation on the screen:
To Bring Up Screen Test
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
DISPAY > CHANEL5 > VLOUME + > POWER 
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen. After you have completed the repairs, clear the result display to “0”.
Quitting Self-diagnostic screen
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
SERVICE MODE 
Service adjustments to this model can be performed using the supplied remote Commander RM-ED009.
1. Turn on the power to the TV set and enter into the stand-by mode.
2. Press the following sequence of buttons on the Remote Commander.
ON SCREEN DISPLAY >DIGIT 5 > VOLUME + > POWER ON  
Set up of AD calibration1 adjustment for terrestrial analog
 The following adjustments are done via ECS.
1. Send ECS_ADJUST_LEVEL_SETTING_INIT command.
2. Set: SREG_NR = 3 (High), HREG_P4_CVD2_85[2:0] = 0 and
ADJ_COLOR_PAL = 5.
3. Set the following registration items.
Screen Size
40"
46"
SREG_TARGET_Y_RF
165
165
SREG_TCD3_CONT_PAL_RF
128
128
SREG_TCD3_SAT_PAL_RF
128
128
SREG_TCD3_HUE_PAL_RF
128
128
Y signal calibration1 adjustment for terrestrial analog.
1. Input PAL colour bar 75%Y, 75%C via terrestrial input.
2. Send ECS_ADJUST_TCD3_CONT_RF command.
3. Read the value of S-REG_APL_LUMA via ECS. Confirming that the value is within spec of the table below.
S-REG_APL_LUMA >  SREG_TARGET_Y_RF±2
C signal calibration1 adjustment for terrestrial analog.
1. Send ECS_ADJUST_TCD3_HUE_RF command.
2. Read SREG_AVE_VAL_B_AREA0 via ECS. (READ_AREA = 0).
3. Read SREG_AVE_VAL_B_AREA6 via ECS. (READ_AREA = 6).
4. Confirm that 8 bits of MSB of item number 2) and 3) are within spec of the table below.
SREG_AVE_VAL_B_AREA* difference > ±2
5. Read SREG_TCD3_SATURATION via ECS.
6. Restore the original value. SREG_NR = 4 (Auto).
7. Send ECS command ADJUST_LEVEL_SETTING_CLR
Gamma Adjustment
Note: Before Gamma adjustment can begin the set needs 20 minutes aging with an ambient temperature between 22 to 28 degrees centigrade.
Preparation before Gamma Adjustment
1. Set SREG_BL_MANU<2> = 1.
2. Set SREG_MUTE_DISPLAY = 0.
3. Set SREG_BL_GAIN = 255.
4. Send ECS command OSD_OFF.
5. Send ECS command CSC_BYPASS_INIT_SET.
6. Wait for successful retrieval.
7. Set SREG_BRIGHT = 100(max).
8. Set SREG_ECO_MODE = 0(Standard).
9. Set SREG_TEST_G_LEVEL = 255.
10. Set SREG_GAMMA_EN<6> = 0(OFF).
11. Measure ‘maximum brightness’.
12. Confirm ‘maximum brightness’ dataover 410cd/m^2.
If the brightness is lower than 410cd/m^2 consider the panel as no good
Set up mode for Gamma Adjustment
1. Set SREG_BRIGHT = 50.
2. Set SREG_GAMMA_EN<6> = 1 (On).
3. Set SREG_COL_MTRX_IDX_OFF = 4.
4. Set SREG_G_GAM_IDX_OFST = 15.
Set up Trident Internal SG and Brightness measurement
1. Set up SREG_TEST_G_LEVEL = 204.
2. Measure brightness A.
3. Set up SREG_TEST_G_LEVEL = 102.
4. Measure brightness B.
5. Set up SREG_MEASURE_GAM_01 = (brightness B/brightness A)*10000.
6. Send the ECS command: GAMMA_TBL_SEARCH_1.
7. Set up SREG_TEST_G_LEVEL = 153.
8. Measure brightness C.
9. Set up SREG_MEASURE_GAM_02 = (brightness C/brightness A)*10000.
10. Send the ECS command: GAMMA_TBL_SEARCH_02.
White Balance Adjustment
1. Set up SREG_COLOR_TEMP = 0 (Cool).
2. Set up SREG_TEST_G_LEVEL = 204 (80 IRE).
3. Adjust SREG_WB_GAM_R(B)05 chroma values so that they are within tolerance in the table below.
40" > U0.1915 > V0.4322  > TOLERENCE <0.0008
46" U0.1907 > V0.4312 > TOLERENCE <0.0008
5. Set up SREG_TEST_G_LEVEL = 128 (50 IRE).
6. Adjust SREG_WB_GAM_R(B)04 chroma values so that they are within tolerance in the table below.
40" U 0.1912 > V0.4316 > TOLERENCE 0.0008->0.0014
46" U 0.1905 > V 0.4316  > TOLERNCE 0.0008 ->0.0014
11. The value of WB_GAM_R(B)01 is determined by the following conditions.
a).For 40 inch models
# WB_GAM_R01 = WB_GAM_R02 - (WB_GAM_R03 - WB_GAM_R02)
# WB_GAM_B01 = WB_GAM_B02 + {(WB_GAM_B03 -WB_GAM_B02)}/2
a).For 46 inch models
# WB_GAM_R01 = WB_GAM_R02 - (WB_GAM_R03 - WB_GAM_R02) x 2
# WB_GAM_B01 = WB_GAM_B02 - (WB_GAM_B03 -WB_GAM_B02)
12. The value of WB_GAM_R(B)06, WB_GAM_R(B)07 is determined by the following conditions.
a).For 40 inch models
# WB_GAM_R06 = WB_GAM_R05 + {(WB_GAM_R04 - WB_GAM_R05)} / 2
# WB_GAM_B06 = WB_GAM_B05 - {(WB_GAM_B04 - WB_GAM_B05)} / 2
# WB_GAM_R07 = WB_GAM_R04
# WB_GAM_B07 = WB_GAM_B05 - (WB_GAM_B04 - WB_GAM_B05)
a).For 46 inch models
# WB_GAM_R06 = WB_GAM_R05 - {(WB_GAM_R04 - WB_GAM_R05)} / 2
# WB_GAM_B06 = WB_GAM_B05
# WB_GAM_R07 = WB_GAM_R05 - (WB_GAM_B04 - WB_GAM_B05)
# WB_GAM_B07 = WB_GAM_B05 - (WB_GAM_B04 - WB_GAM_B05)
13. Send ECS command: WB_SAVE.