SONY KDL-32W670A -How to enter to service mode - LED error code indication - White balance adjustment - LED Television repair and service

Category: LED Television Repair and Service 

Contents of this article 

• LED error code indication
• Service mode access
•  White balance adjustment 

SONY KDL-32W670A

ERROR IDENTIFICATION

The identification of errors within the WAX2F chassis is triggered in one of two ways :- 1: Busy or 2: Device failure to respond to IIC. In the event of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with a continuous flashing LED) and then communicate with each device in turn to establish if a device is faulty. If a device is found to be faulty the relevant device number will be displayed through the LED (Series of flashes which must be counted).

LED BLINKING CODES 

LED ERROR CODE	ERROR DESCRIPTION
1	UNREG33V Supply Voltage Trouble (DCALERT3)
2	VD1.8, DE5V/6V Voltage Trouble (DCALERT2)
3	UNREG10.5V, PANEL5V Voltage Trouble (DCALERT1)
4	Backlight Trouble
5	Main Supply Voltage Trouble
6	Speaker Applied Voltage Trouble
7	Monitor an Increase in Inside-Temperature (esp. on the panel side)
8	Trident IC Trouble
9	DTT Trouble (Communications / BS_CS_PROT)

How to enter Service Mode

Service adjustments to this model can be performed using the supplied remote Commander.
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 +)  > (TV)

4. Move to the relevant command using the up or down arrow buttons on the remote commander.
5. Press the right arrow button to enter into the required menu item.
6. Press the ‘Menu’ button on the remote commander to quit the Service Mode when all adjustments have been completed.

Note :
# After carrying out the service adjustments, to prevent the customer accessing the ‘Service Menu’ switch the TV set OFF and then ON.
 Set up of AD calibration1 adjustment for terrestrial analog.

1. Send ECS_ADJUST_LEVEL_SETTING_INIT command.
2. Ensure noise reduction NR=3 (High), GAMMA_EN=0, P4_CVD2_85=0.
3. Set the following registration items.

Screen Size	40"	46"
TARGET_Y_RF(PAL)	165	165
ADJ_COLOR_Y_ATT(PAL)	128	128
ADJ_COLOR_PAL(PAL)	3	3

Set up Trident internal SG and brightness measurement

1. Ensure TEST_PATTEN_ON=1.
2. Ensure TEST_G_LEVEL=204.
3. Measure brightness A.
4. Ensure TEST_G_LEVEL=102.
5. Measure brightness B.
6. Set up G_GAMMA_OFST_01=brightness B/brightness
A#10000. The result is written to G_GAMMA_OFST_01.
7. Send Gamma_Tbl_Search_1 command.
8. Ensure TEST_G_LEVEL=153.
9. Measure brightness C.
10. Set up G_GAMMA_OFST_02=brightness C/brightness
A#10000. The result is written to G_GAMMA_OFST_02.
11. Send Gamma_Tbl_Search_2 command.12. Save set up value in NVM in register G_GAM_IDX_OFST.

White Balance Adjustment

Set up mode for White Balance Adjustment

1. Send ECS_ADJUST_LEVEL_SETTING_INIT command.
2. Ensure COL_MATRIX_INDEX=3.
3. Ensure DYNAMIC_EN=0.
4. Ensure U_BRT_OFFSET=128.

White Balance of Colour Temperature “Cool”

1. Set up COLOR_TEMP=0.
2. Set up R_GAMMA_OFST_01=128.
3. R_GAMMA_OFST_02=128
R_GAMMA_OFST_03=128
R_GAMMA_OFST_04=128
R_GAMMA_OFST_05=128
R_GAMMA_OFST_06=128
R_GAMMA_OFST_07=128
B_GAMMA_OFST_01=128
B_GAMMA_OFST_02=128
B_GAMMA_OFST_03=128
B_GAMMA_OFST_04=128
B_GAMMA_OFST_05=128
B_GAMMA_OFST_06=128
B_GAMMA_OFST_07=128
4. Set up “Wait”.
5. Set up TEST_G_LEVEL=204.
6. Adjust R_GAMMA_OFST_05 and B_GAMMA_OFST_05
7. Set up TEST_G_LEVEL=153.
8. Adjust R_GAMMA_OFST_04 and B_GAMMA_OFST_04

9. Set up TEST_G_LEVEL=102.
10. Adjust R_GAMMA_OFST_03 and B_GAMMA_OFST_03

11. Set up TEST_G_LEVEL=76.
12. Adjust R_GAMMA_OFST_02 and B_GAMMA_OFST_02

13. Set up TEST_G_LEVEL=51.
14. Adjust R_GAMMA_OFST_01 and B_GAMMA_OFST_01

15. The values of R_GAMMA_OFST_06 and 07 and
B_GAMMA_OFST_06, and 07 are determined by the following conditions.
a). Adjustment value of B_GAMMA_OFST_05>180 and
Adjustment value of R_GAMMA_OFST_05>128.
# B(R)_GAMMA_OFST_06 = B(R)_GAMMA_OFST_05 -
{B(R)_GAMMA_OFST_05 - B(R)_GAMMA_OFST_04} / 2.
# B(R)_GAMMA_OFST_07 = 128

b). Adjustment value of R_GAMMA_OFST_05=<128.
# R_GAMMA_OFST_06 = R_GAMMA_OFST_07 =R_GAMMA_OFST_04.
c). Adjustment value of B_GAMMA_OFST_05=<180.
# B(R)_GAMMA_OFST_06 = B(R)_GAMMA_OFST_07

16. Send WB_SAVE command .