SANYO LCD-39XR12F SERVICE MODE AND POWER SUPPLY CIRCUIT

SANYO LCD-39XR12F SERVICE MODE AND POWER SUPPLY CIRCUIT

SANYO LCD-39XR12F 

SERVICE MODE AND POWER SUPPLY CIRCUIT 

Adjustment Instruction
The unit adjustment
According to the wiring diagram specified by “Product Specification”, connect power/backlight board assembly, data processing assembly, IR/Key board assembly correctly, supply with power, turn on the TV set. Check display

Factory menu instruction
a) Press key “INPUT”, then press digital keys “2,5,8,0” in turn to enter into primary factory menu;
b) Press keys “▲” and “▼” to move cursor to each page of primary factory menu, then press key “OK” to enter into submenu page;
c) Press keys “▲” and “▼” to move cursor upward or downward within any one page;
d) Press keys “◄” and “►” to do adjustment when move cursor to one item;
e) Press key “MENU” to exit submenu page to the superior factory menu;
f) Press key “EXIT” to exit factory menu in any case;
g) Press key “OK” to enter the inferior factory submenu;
h) Factory menu item: Aging Mode to be used for aging the TV set; red, green blue and white full screen picture displays in turn; default setting is OFF;
i) Factory menu item: ADC ADJUST to be used for ADC calibration for VGA and Component;
j) Factory menu item: Fac. Channel Preset to be used for factory channel presetting; central signal digital frequency value for Australia program is set as CH28(529.5 MHz) and CH33(564.5 MHz); original digital program presetting could not change if central signal setting has any modification, so please search for digital program manually by performing item DTV of menu Channel;
k) Factory menu item: Color Temp. to be used for white balance adjustment;
l) Factory menu item: Store Setting Init.
m) Factory menu item: USB SW Update to be used for software updating from USB port; when U disk with updating software is inserted into USB port, choose the item to perform updating process;
n) Factory menu item: Other Settings include settings of EEPROM Init, MEMC Update, Power mode, MST DEBUG, ISP MODE, Backlight, SSC, NONLINEAR, Video Quality, Audio Quality, Light Sensor, Overscan, etc.; no need any adjustment normally.

Power mode: to be used for setting power-on mode; Standby: TV set will be in stand-by mode after power-on; Mem: TV set will keep the last power-off mode after power-on again; Force On: TV set will work automatically after power-on; Unless specified by customer, Standby mode is default and kept by adjustment;

o) Factory menu item: Shipment to be used for initializing user data; Success flag will display after initialization, then press KEY POWER only to power off the TV set.
p) Please perform EEPROM Init before adjustment for the first time if software has been upgraded or data have been kept in EEPROM.

ADC calibration for D-SUB channel
a) Switch to D-SUB channel;
b) Press key “INPUT”, then press digital keys “2,5,8,0” in turn to enter into primary factory menu;
c) Move cursor to item “ADC ADJUST” and press key “OK” to enter into the inferior submenu;
d) Input D-SUB signal (VG-849 Timing:856 (1024×768/60 Hz), Pattern:914 Chess Pattern); move cursor to item “MODE”, press keys “▲” and “▼” to choose item “RGB”, then move cursor to item “AUTO ADC” and press key “OK” to perform auto adjustment until prompt “success” displays;

ADC calibration for Component channel
a) Switch to Component channel;
b) Press key “INPUT”, then press digital keys “2,5,8,0” in turn to enter into primary factory menu;
c) Move cursor to item “ADC ADJUST” and press key “OK” to enter into the inferior submenu;
d) Input Component signal (VG-849 Timing:972(1080i), Pattern:918 100% color bar); move cursor to item “MODE”, press keys “▲” and “▼” to choose item “YPbPr”, then move cursor to item “AUTO ADC” and press key “OK” to perform auto adjustment until prompt “success” displays;

White balance adjustment
Unless specified by customer, default settings of COOL color temperature is 12000K and chromatic coordinates is (272,278); referenced settings of Normal color temperature is 9300K and chromatic coordinates is (285,293); referenced settings of Warm color temperature is 6500K and chromatic coordinates is (313,329) Default setting is Normal.
Adjustment procedures
The TV set should be working above 30 minutes to be in a stabler state before adjustment. Use CA-210 BBY channel to adjust white balance;
a) Switch to HDMI channel;
b) Press key “INPUT”, then press digital keys “2,5,8,0” in turn to enter into primary factory menu;
c) Move cursor to item “W/B ADJUST” and press key “OK” to enter into the inferior submenu;
d) Input HDMI signal (VG-849 Timing: 972(1080i)， Pattern: 921 16 step Gray); move cursor to item “MODE”, press keys “▲” and “▼” to choose item “HDMI”, then move cursor to item “TEMPERTURE” and press keys “▲” and “▼” to choose “NORMAL”;
e) Fix “G GAIN”, adjust “R GAIN, B GAIN” to set 14th chromatic coordinates as (285、 293);
f) Fix “G OFFSET”, adjust “R OFFSET,B OFFSET” to set 4th chromatic coordinates as (285,293);
g) To make sure chromatic coordinates of bright scale are (X=285±10,Y=293±10) and chromatic coordinates of dark scale are (X=285±10,Y=293±10) during adjusting;
h) Move cursor to item “COPY ALL” to copy white balance data to other channels except DTV mchannel;
i) Check if chromatic coordinates of COOL and WARM meet the requirements (permitted error of COOL bright scale: x±10,y±10, permitted error of COOL dark scale: x±10， y±10; permitted error of WARM bright scale and dark scale: x±10,y±10); if not, adjust “R_GAIN /B_GAIN/R_OFF/B_OFF” to be up to the requirements and then save the data;
j) Perform “Copy All” for COOl/Warm adjustments except DTV channel;
k) Check if chromatic coordinates of other channels meet the requirements, if not, do adjustment for nonstandard channel alone with the same procedures from b) to j) as HDMI channel’s and then save the data;
l) Switch to DTV channel, change to 16-grey-scale program from central signal source, adjust white balance with the same procedures from e) to g) ; but pay attention not to perform “COPY ALL”!
m) Inspect all channels after completing adjustment to check if display is normal;
n) Refer to the following rule for adjustment:

B Gain/Offset: adjust B Gain/Offset downward, coordinates of X and Y will increase, adjust B Gain/Offset upward, coordinates of X and Y will decrease;
R Gain/Offset: adjust R Gain/Offset will affect X value, but affect Lv value slightly, adjust R Gain/Offset upward, coordinates of X will increase, adjust R Gain/Offset downward, coordinates of X will decrease;
G Gain/Offset: adjust G Gain/Offset will affect Y value, and affect Lv value greatly, adjust G Gain/Offset upward, coordinates of Y will increase, adjust G Gain/Offset downward, coordinates of Y will decrease;
Note: Sanyo requires that default color temperature is Normal, adjust white balance of color temperature Normal and Cool in Dynamic picture mode; for other customers, please adjust white balance of color temperature Cool in Dynamic picture mode.

User Menu Setting before shipment
Enter into Factory Menu and choose “Shipment” to perform presetting before shipment; Main procedures are described as follow:
a) Clear out all programs;
b) Clear out information of VCHIP， parent control, etc.;
c) Default user analog parameter setting;
d) Recover default password;
e) Set Menu Language as English；
f) Set Power mode as Standby

POWER SUPPLY CIRCUIT 

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