HOW TO ENTER SERVICE MODE SANYO LCD-32XR10F AND ADJUSTMENTS

How to enter service mode Sanyo LCD-32XR10F and adjustments

Contents of the article 

• Service mode (Factory adjustment mode )
• white balance adjustment
• Calibration of the VGA input   

SANYO LCD-32XR10F 

SERVICE MODE AND ADJUSTMENTS 

Alignment instructions
Unit adjustment
According to the wiring of “9232KH4601JL”, connect main board, power board and IR board correctly, then switch on the main power and press key “standby” to turn on the TV set. Check if display is normal?
Using method of factory menu
a) Press key “SOURCE” first, then press keys “2, 5, 8, 0” in turn to enter into initial factory menu;
b) Press keys “UP” and “DOWN” to move cursor to each page of initial factory menu, then press “OK” to enter into adjusting menu of each page;
c) Press keys “UP” and “DOWN” to move cursor upwards or downwards within any page;
d) Press keys “LEFT” and “RIGHT” to do adjustment when cursor is moved to any item;
e) Press key “MENU” to exit menu of any page to its superior factory menu;
f) Press key “EXIT” to exit factory menu in any case;
g) Press key “OK” to enter into inferior factory menu;
h) Factory menu item: ADC ADJUST, for ADC calibration of VGA and Component;
i) Factory menu item: W/B ADJUST, for white balance adjustment;
j) Factory menu item: POWER Mode, for setting power-on mode; the default setting is “Standby” mode unless specified by customer;
Standby: TV set will be in “standby” mode after power-on;
MEM: TV set will keep states before last power-off;
ForceOn: TV set will turn on automatically; it also can be used as aging mode at factory;
k) Factory menu item: Other Setting->ISP Mode, the item will not be kept in memory, that is, it will be always in “OFF” mode after turning on again;
“ON”: Upgrading unit software through VGA port while connecting to ISP device;
“OFF”: Normal DDC functions of VGA port will recover;
l) Factory menu item: EEPROM Init, for factory and customer data initialization; TV set will reset and initial guiding interface will display after executing the item;
m) Factory menu item: Factory ChA., for factory channels presetting; it is necessary to connect to central signal source before operating the item; now digital frequency of central signal CH28 529.5 MHz  and CH33 564.5 MHz  are distributed to Australia programs; originally preset digital programs will not change along with the modification of central signal, so please operate item “DTV” of menu “Channel” to search digital programs manually, which will last about 15s;
n) Factory menu item: Shipment, all DTV/ATV programs for factory adjustment will be cleared out first, then ATV channels will be preset according to customer requirements; the item must be executed before shipment to clear out channels for factory adjustment;
o) Factory menu item: Other Setting->MST DEBUG, default setting is “OFF”, it will not be kept in memory, that is, it will always in “OFF” mode after turning on the set again; “OFF”: RS232 functions of some engineering machines can match design specifications; “ON”: It is convenient for design tools to debug the software;
p) Factory menu item: Backlight, for adjusting brightness of backlight; test voltage of X108-12# (PWM) while adjusting the item to meet the requirements of PWM voltage scope corresponding to mixture brightness described by panel specification; the item need not adjustment for it has been preset by software;

q) Factory menu item: Other Setting->SSC ADJUST, for expanded spectrum adjustment; the item need not adjustment for it has been preset by software;
r) Factory menu item: Other Setting->AUDIO Curve Setting, for sound curve adjustment; if without special customer requirements, the item need not adjustment commonly for it has been preset by software;
Note: If software is upgraded or there have been date in EEPROM already, please execute item “RESET ALL” to clear out all data before adjustment for the first time.
ADC calibration
ADC calibration of VGA
1)Switch “source” to VGA channel;
2)Press key “SOURCE”, then press keys “2, 5, 8, 0” in turn to enter into initial factory menu;
3)Move cursor to item “ADC ADJUST” and press key “OK” to enter into inferior factory menu;
4)Input VGA signal VG848: Timing 856 (1024×768/60 Hz ), Pattern 920 Gray 8 step(H);
move cursor to item “MODE ”,press keys “UP” and “DOWN” to select item “RGB”， then move cursor to item “AUTO ADC” and press key “OK” to begin auto-adjustment until completing the calibration.
ADC calibration of YPbPr
1)Switch “source” to YPbPr channel;
2)Press key “SOURCE”, then press keys “2, 5, 8, 0” in turn to enter into initial factory menu;
3)Move cursor to item “ADC ADJUST” and press key “OK” to enter into inferior factory menu;
4)Input Y/Pb/Pr signal VG848 Timing 976 720P  ,Pattern 918 SMPTE Color Bar; move cursor to item “MODE ”， press keys “UP” and “DOWN” to select item “YPbPr”， then move cursor to item “AUTO ADC” and press key “ENTER” to begin auto-adjustment until completing the calibration, prompt “SUCCESS” displaying below “AUTO ADC” means successful auto-calibration.

White balance adjustment
Unless specified by customer, default color temperature “COOL” is 12000K and its chromatic coordinates is (272, 278); color temperature “NORMAL” is 9300K and its chromatic coordinates is (285, 293); color temperature “WARM” is 6500K and its chromatic coordinates is (323329);
Adjustment procedure
TV set should be working over 30 mins to be in stabler state before white balance adjustment;
Use white balance apparatus CA210 and switch to its BBY channel.
1)Switch “source” to HDMI channel;
2)Press key “SOURCE”, then press keys “2, 5, 8, 0” in turn to enter into initial factory menu;
3)Move cursor to item “W/B ADJUST” and press key “OK” to enter into inferior factory menu;
4)Input DVI/HDMI signal (16 Gray Scale Signal: 1024×768/60Hz, TIMING: 856,
PATTERN:921); move cursor to item “MODE”, press keys “UP” and “DOWN” to select item “HDMI1” or other HDMI channels, then move cursor to item “TEMPERATURE” and press keys “UP” and “DOWN” to select item “COOL”;
5) Adjust items “R-GAIN, G-GAIN, B-GAIN” to set chromatic coordinates of 14th scale as (272, 278);
6)Adjust items “R-OFFSET, G-OFFSET, B-OFFSET” to set chromatic coordinates of 4th scale as (272, 278);

7)During adjustment, make sure that chromatic coordinates of bright scale are (X=272±10, Y=278±10) and chromatic coordinates of dark scale are (X=272±10, Y=278±10);
8)Move cursor to item “COPY ALL” again to copy data of white balance to other channels except DTV;
9)Check if chromatic coordinates of HDMI NORMAL and WARM meet the requirements of error allowance (dark scale: ±10, bright scale: ±10) or not, otherwise adjust items “R_GAIN/B_GAIN/R_OFF/B_OFF” to meet them and then save the data;
10) Switch to other channels (ATV, AV， COMPONENT， D-SUB), check if chromatic coordinates of COOL, NORMAL and WARM meet the requirements or not, if not, adjust them respectively in the same way of HDMI and with 16 gray scale signal; exit menu “W/B
ADJUST” after adjustment, the data will be save automatically;
11) DTV adjustment: switch to DTV channel, select 16 gray scale program, enter into factory menu, do adjustment following above step 5, 6, 7;
12) Please refer to the adjusting rules as follows:
B Gun: coordinates of X and Y will increase when B gun is adjusted downwards; coordinates of X and Y will decrease when B gun is adjusted upwards;
R Gun: adjusting R gun will effect coordinate of X, and value of Lv slightly; coordinate of X will increase when R gun is adjusted upwards; coordinate of X will decrease when R gun is adjusted downwards;
G Gun: adjusting G gun will effect coordinate of Y, and value of Lv greatly; coordinate of Y will increase when G gun is adjusted upwards; coordinate of Y will decrease when G gun is adjusted downwards;
Note: Default color temperature specified by SANYO customer is Normal, adjust chromatic coordinates of Normal and Cool in Dynamic picture mode; adjust chromatic coordinates of Cool in Dynamic picture mode for other customers.