Xoceco and Dynex DX-32L150A11, Initialization, SMPS schematic, Service
mode, WB adjustment and more - 32inch, 37inch, 40inch and 46inch LCD TV
Used ICs: STR A6059H, STR46059, SSC9500
China LCD TVs - Dynex and Xoceco DX-19L150A11,
22L150A11-DX, DX-24L150A11, 26L150A11-DX, DX-32L150A11, 37L150A11-DX,
DX-40L130A11, DX-46L150A11 Power Supply Regulator board for 32,37,40 and
46 inch LCD TVs
Factory Menu – Service mode
a) Press INPUT button, then in turn press “2” “5” “8” “0” to enter the Factory Menu.
b) Press CH+ or CH- to select items, then press OK to enter.
c) Press CH+ or CH- to move the highlight up or down.
d) Press VOL- or VOL+ to adjust the selected item.
e) Press MENU to return to the previous menu.
f) Press EXIT to close the Factory Menu.
g)
After closing the Factory menu, you can press SLEEP to enter the Factory Menu
directly if power is still on.
h) In Factory Menu, select “On” for “Aging Mode” to turn on aging mode. Press
any button on the unit to exit.
i) “Power on mode” item of “Other setting” has three options:
i) “Power on mode” item of “Other setting” has three options:
“On” means power on
directly; “Off” means the unit will be in “standby” state when connect the
power supply, and needed to press the “Power” button to turn on; “Memory” means the
unit will in the last power-off state after power-on.
White Balance adjustment
White Balance adjustment
Preparations
Before white balance adjustment, let the TV work for more than 30
minutes and be in stable status. Use Color Analyzer CA210 BBY channel
for alignment. Only align NORMAL color temperature. To ensure both COOL
and WARM color temperature to be able to meet the requirements, please
make sure bright step color temperature to be △X≤±5,△Y≤±5, dark step
color temperature to be △X≤±5,△Y≤±5.
White balance data alignment at four modes
a) Alignment at ATV mode (AV and S-VIDEO is the same)
In TV mode, set Air/Cable to Air. Input test signal with 11 gray steps.
From Factory menu select “Color Temp” item and set “Color Mode” to
“NORMAL”, fix GAIN GREEN, adjust GAIN RED and GAIN BLUE to make 9th step
color coordinate to be (285, 293). Fix OFFSET GREEN, adjust OFFSET RED
and OFFSET BLUE to make the third step color coordinate to be (285,293).
In this way repeatedly adjust GAIN RED, GAIN BLUE and OFFSET RED,
OFFSET BLUE until two level gray step’s color coordinate be (285,293).
Then select “MENU” to return to previous menu or select “SAVE TO EEPROM”
to save the white balance.
Check if COOL and WARM color temperature meet the requirement. If not,
then adjust GAIN RED, GAIN BLUE, OFFSET RED, OFFSET BLUE to make them
meet requirements, and then save.
b)
Alignment at DTV mode (HDMI is the same)
In TV mode, set Air/Cable to Air. Input test signal with 11 gray steps. From Factory menu select “Color Temp” item and set “Color Mode” to “NORMAL”, fix GAIN GREEN, adjust GAIN RED and GAIN BLUE to make 9th step color coordinate to be (285, 293). Fix OFFSET GREEN, adjust OFFSET RED and OFFSET BLUE to make the third step color coordinate to be (285,293). In this way repeatedly adjust GAIN RED, GAIN BLUE and OFFSET RED, OFFSET BLUE until two level gray step’s color coordinate be (285,293). Then select “MENU” to return to previous menu or select “SAVE TO EEPROM” to save the white balance.
In TV mode, set Air/Cable to Air. Input test signal with 11 gray steps. From Factory menu select “Color Temp” item and set “Color Mode” to “NORMAL”, fix GAIN GREEN, adjust GAIN RED and GAIN BLUE to make 9th step color coordinate to be (285, 293). Fix OFFSET GREEN, adjust OFFSET RED and OFFSET BLUE to make the third step color coordinate to be (285,293). In this way repeatedly adjust GAIN RED, GAIN BLUE and OFFSET RED, OFFSET BLUE until two level gray step’s color coordinate be (285,293). Then select “MENU” to return to previous menu or select “SAVE TO EEPROM” to save the white balance.
Check
if COOL and WARM color temperature meet the requirement. If not, then adjust
GAIN RED, GAIN BLUE, OFFSET RED, OFFSET BLUE to make them meet requirements,
and then save.
c) Alignment at YPbPr mode
First
perform ADC calibration: input 75% color bar plus gray step signal in
480i/60Hz format, (VG848 Timing is 968, PAT is 918), enter Factory Menu
select ADC Setting, do ADC AUTO adjustment once.
White
balance adjustment: From VG848 equipment input 8 gray steps signal in
1920 x 1080i /60Hz format. Enter Factory Menu select “Color Temp”, first
set “Color Mode” to NORMAL, fix GAIN GREEN, adjust GAIN RED and GAIN
BLUE to make the 7th color coordinate be (285, 293). Fix OFFSET GREEN,
adjust OFFSET RED and OFFSET BLUE to make the second step color
coordinate be (285,293). In this way repeatedly adjust GAIN RED, GAIN
BLUE and OFFSET RED, OFFSET BLUE until two level gray step color
coordinate be (285, 293). Then select “MENU” to return to previous menu
or select “SAVE TO EEPROM” to save the white balance.
Check
if COOL and WARM color temperature meet the requirement. If not, then
adjust GAIN RED, GAIN BLUE, OFFSET RED, OFFSET BLUE to make them meet
requirements, and then save.
d)
Alignment at VGA mode
First do ADC calibration: input VESA crosshatch signal in 800 x 600 / 60Hz format (VG848 Timing is 854, PAT is 914), check if the picture is displayed wholly. If not, perform AUTO adjustment by making use of VGA Setting sub-menu from SETUP menu (User menu) so that the picture is displayed wholly. Then enter Factory Menu select ADC Setting, do ADC AUTO adjustment once to calibrate ADC. White balance adjustment: From VG848 equipment input 8 gray steps signal in 800 x 600 /60Hz
format. Enter Factory Menu select “Color Temp”, first set “Color Mode” to NORMAL, fix GAIN GREEN, adjust GAIN RED and GAIN BLUE to make the 7th color coordinate be (285, 293). Fix OFFSET GREEN, adjust OFFSET RED and OFFSET BLUE to make the second step color coordinate be (285,293). In this way repeatedly adjust GAIN RED, GAIN BLUE and OFFSET RED, OFFSET BLUE until two level gray step color coordinate be (285, 293). Then select “MENU” to return to previous menu or select “SAVE TO EEPROM” to save the white balance.
Check if COOL and WARM color temperature meet the requirement. If not, then adjust GAIN RED, GAIN BLUE, OFFSET RED, OFFSET BLUE to make them meet requirements, and then save.
First do ADC calibration: input VESA crosshatch signal in 800 x 600 / 60Hz format (VG848 Timing is 854, PAT is 914), check if the picture is displayed wholly. If not, perform AUTO adjustment by making use of VGA Setting sub-menu from SETUP menu (User menu) so that the picture is displayed wholly. Then enter Factory Menu select ADC Setting, do ADC AUTO adjustment once to calibrate ADC. White balance adjustment: From VG848 equipment input 8 gray steps signal in 800 x 600 /60Hz
format. Enter Factory Menu select “Color Temp”, first set “Color Mode” to NORMAL, fix GAIN GREEN, adjust GAIN RED and GAIN BLUE to make the 7th color coordinate be (285, 293). Fix OFFSET GREEN, adjust OFFSET RED and OFFSET BLUE to make the second step color coordinate be (285,293). In this way repeatedly adjust GAIN RED, GAIN BLUE and OFFSET RED, OFFSET BLUE until two level gray step color coordinate be (285, 293). Then select “MENU” to return to previous menu or select “SAVE TO EEPROM” to save the white balance.
Check if COOL and WARM color temperature meet the requirement. If not, then adjust GAIN RED, GAIN BLUE, OFFSET RED, OFFSET BLUE to make them meet requirements, and then save.
Schematic - 32 inch Power Board
Click on the schematics to zoom in
37 inch Power Board
40 inch Power Board
46 inch Power Board
Enter into Factory menu, select and do Other Setting > SHIPMENT item, then the TV will automatically preset the user menu to default. After alignment this User Menu Preset procedure must be done.
SHIPMENT will do the following
1) Clear all program information
2) Clear V-CHIP information
3) Analog value default setting for all sources
4) Power on mode set to Off
5) Active Setup Wizard menu
Note: after the Preset procedure is complete, it must exit the menu, power off at Standby state and then disconnect the power supply.
EEPROM
initialization (not be used unless needed)
The method is: Press the IR POWER/KEYPAD POWER to turn on the TV.
The method is: Press the IR POWER/KEYPAD POWER to turn on the TV.
Before showing
LOGO press INPUT SOURCE incessantly until the indicator lights red, then in
turn press MENU, VOL+, CH+ (the interval between two press is below 2 seconds).
The indicator light will turn blue, after a while the unit will be in STANDBY,
that means RESET EEPROM succeeds.
If error key order or key number or the interval
is over 2 seconds, the unit will keep on the previous setting and perform the
order, then EEPROM will not be cleared.
