Wednesday, April 01, 2015

SANYO 24XR113D LED LCD SERVICE MODE AND POWER SUPPLY CIRCUIT

SANYO BLU RAY

SANYO 24XR113D

 LED LCD 

SERVICE MODE AND POWER SUPPLY CIRCUIT 

SERVICE MODE

Press key “INPUT”, then press digital keys “2,5,8,0” in turn to enter into 

primary factory menu;
Adjustment Instructions
The unit adjustments
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: ADC ADJUST to be used for ADC calibration for VGA and Component;
i) Factory menu item: Color Temp. to be used for white balance adjustment;
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 as central signal setting has any modification, so please search for digital program manually by performing item DTV of menu Channel;
k) Factory menu item: EEPROM Init to be used for initializing factory data and user date; the TV set will restart when carrying out the item;
l) 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;
m) Factory menu item: Other Settings including settings of MST DEBUG, ISP MODE, Backlight, SSC, NONLINEAR, Video Quality, Audio Quality, Light Sensor, Overscan, QMAP ADJUST, VIF1, Aus/Nz All Ch Preset, etc.; no need any adjustment normally.
n) Factory menu item: Power mode to be used for power-on mode setting; Standby: to be in standby state when power on the TV set; Mem: to keep in last power-off state when power on the TV set again; Force On: the TV set will start up automatically when power on the TV set again; The default setting will be set as Standby mode and keep in memory unless customer has special requirement;
o) Factory menu item: USB SW Update to be used for software updating from USB port; after U disk containing updating software is inserted into USB port, choose the item to perform updating process;
p) Factory menu item: Shipment to be used for initializing user data; the TV set will be initialized and then a prompt “SUCCESS” will display, initial guided interface will display after pressing key “exit”;
q) 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 square (5 white squares + picture with frame)); 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 a 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 a prompt “success” displays;
White balance adjustment
For TV model (< 24” ), default settings of COOL color temperature is 10000K and chromatic coordinates is (280
288); referenced settings of Normal color temperature is 8000K and chromatic coordinates is (295 305); referenced settings of Warm color temperature is 6500K and chromatic coordinates is (313 329); For TV model (> 24” ), 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 adjustemnt;
h) Move cursor to item “COPY ALL” to copy white balance data to other channels except DTV channel;
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 in accordance 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 step Gray program from central signal source, adjust white balance in accordance 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 customer 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.
LCD servicing precautions
2.1 Screens are different from one model to another and therefore not interchangeable. Be sure to use the screen of the original model for replacement.
2.2 The operation voltage of LCD screen is 700-825V. Be sure to take proper measures in protecting yourself and the machine when testing the system in the course of normal operation or right after the power is switched off. Please do not touch the circuit or the metal part of the module that is in operation mode. Relevant operation is possible only one minute after the power isswitched off.
2.3 Do not use any adapter that is not identical with the TV set. Otherwise it will cause fire or damage to the set.
2.4 Never operate the set or do any installation work in bad environment such as wet bathroom, laundry, kitchen, or nearby fire source, heating equipment and devices or exposure to sunlight etc. Otherwise bad effect will result.
2.5 If any foreign substance such as water, liquid, metal slices or other matters happens to fall into the module, be sure to cut the power off immediately and do not move anything on the module lest it should cause fire or electric shock due to contact with the high voltage or short circuit.
2.6 Should there be smoke, abnormal smell or sound from the module, please shut the power off at once. Likewise, if the screen is not working after the power is on or in the course of operation, the power must be cut off immediately and no more operation is allowed under the same condition.
2.7 Do not pull out or plug in the connection wire when the module is in operation or just after the power is off because in this case relatively high voltage still remains in the capacitor of the driving circuit. Please wait at least one minute before the pulling out or plugging in the connection wire.
2.8 When operating or installing LCD please don’t subject the LCD components to bending, twisting or extrusion, collision lest mishap should result.
2.9 As most of the circuitry in LCD TV set is composed of CMOS integrated circuits, it’s necessary to pay attention to anti statics. Before servicing LCD TV make sure to take anti static measure and ensure full grounding for all the parts that have to be grounded.
2.10 There are lots of connection wires between parts behind the LCD screen. When servicing or moving the set please take care not to touch or scratch them. Once they are damaged the screen
Attention: This service manual is only for service personnel to take reference with. Before servicing please read the following points carefully. would be unable to work and no way to get it repaired.
If the connection wires, connections or components fixed by the thermotropic glue need to disengage when service, please soak the thermotropic glue into the alcohol and then pull them out in case of dagmage.
2.11 Special care must be taken in transporting or handling it. Exquisite shock vibration may lead to breakage of screen glass or damage to driving circuit. Therefore it must be packed in a strong case before the transportation or handling.
2.12 For the storage make sure to put it in a place where the environment can be controlled so as to prevent the temperature and humidity from exceeding the limits as specified in the manual. For prolonged storage, it is necessary to house it in an anti-moisture bag and put them altogether in one place.

2.13 Display of a fixed picture for a long time may cause a permanent after-image on the screen, as commonly called “ghost shadow”. The degree of the after-image varies with the maker of LCD screen. This phenomenon doesn’t represent failure. This “ghost shadow” may remain in the picture for a period of time (several minutes). But when operating it please avoid displaying still picture in high brightness for a long time.
POWER SUPPLY CIRCUIT 
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