REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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Saturday, 30 March 2019

SANYO LED-46XR123D – HOW TO ENTER FACTORY MODE – ADJUSTMENTS _ SMPS SCHEMATIC

SANYO LED-46XR123D – HOW TO ENTER Factory Mode – Adjustments _ SMPS Schematic

LED-46XR123D - SANYO LED LCD TV – Factory Mode – Adjustments _ SMPS Schematic
FACTORY MENU [SERVICE MENU]
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
> Press key INPUT, then press digital keys “2, 5, 8,0” in turn to enter into primary factory menu.
> Press keys ▲ and ▼ to move cursor to each page of primary factory menu, and then press key OK to enter into sub-menu page.
> Press keys ▲ and ▼ to move cursor upward or downward within any one page.
> Press keys ◄ and ► to do adjustment when move cursor to one item.
> Press key MENU to exit sub-menu page to the superior factory menu.
> Press key EXIT to exit factory menu in any case.
> Press key OK to enter the inferior factory sub-menu.
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;
Factory menu item
 ADC ADJUST to be used for ADC calibration for VGA and Component.
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 search for digital program manually by perform item DTV of menu Channel;
Factory menu item
 Color Temp. to be used for white balance adjustment;
Factory menu item: Store Setting Init.
Factory menu item
 USB SW Update to be used for software updating from USB port; when U disk containing updating software is inserted into USB port, choose the item to perform updating process;
Factory menu item
 Other Settings include settings of EEPROM Init, MEMC Update, Power mode, MST DEBUG, ISP MODE, Back-light, SSC, NONLINEAR, Video Quality, Audio Quality, Light Sensor, Over scan, etc.; no need any adjustment normally.
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.
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
Switch to D-SUB channel.
> Press key INPUT, and then press digital keys 2, 5, 8, 0 in turn to enter into primary factory menu.
> Move cursor to item ADC ADJUST and press key OK to enter into the inferior sub-menu.
> 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
* Switch to Component channel.
* Press key “INPUT”, then press digital keys 2, 5, 8, 0 in turn to enter into primary factory menu;
* Move cursor to item “ADC ADJUST” and press key “OK” to enter into the inferior submenu;
* 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;
* Switch to HDMI channel;
* Press key “INPUT”, then press digital keys “2, 5, 8, 0” in turn to enter into primary factory menu;
* Move cursor to item “W/B ADJUST” and press key “OK” to enter into the inferior submenu;
Input HDMI signal (VG-849 Timing: 856(1024×768/60 Hz), 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 “COOL”.
Fix “G GAIN”, adjust “R GAIN, B GAIN” to set 14th chromatic coordinates as (272, 278);
Fix “G OFFSET”, adjust “R OFFSET、 B OFFSET” to set 4th chromatic coordinates as (272, 278).
* To make sure 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) during adjusting;
* Move cursor to item “COPY ALL” to copy white balance data to other channels except DTV channel;
* Check if chromatic coordinates of NORMAL and WARM meet the requirements (permitted error of NORMAL bright scale: x±1,±10, permitted error of NORMAL 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.
* Perform “Copy All” for Normal/Warm adjustments except DTV channel.
* 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.
 Switch to HDMI channel, change to 16-grey-scale program from central signal source, adjust white balance with the same procedures from e) to g) as HDMI channel’s; but pay attention not to perform “COPY ALL”
* Inspect all channels after completing adjustment to check if display is normal.
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.
Function check (TV functions)
Input central signal to RF port, enter into menu Channel first, then search for programs automatically and check if there is any omitted program; check the speakers output and the picture display;
Component port
Input Component signal from VG-849 with formats listed as Table  separately, check picture and sound in the case of power-on, switching channel, changing mode, etc.
D-SUB port
Input D-SUB signal from VG-849 with formats listed as Table separately, check picture and sound; if H./V. of picture displays abnormally, enter into main menu Picture > Screen > Auto Adjust to perform auto calibration.
HDMI port
HDMI port supports all signal formats supported by Component port  and D-SUB port ), furthermore, it can also support signal with formats listed as Tables  (video and audio combination). Check picture and sound in the case of power-on, switching channel, changing mode, etc.
USB port. PVR function
Insert a formatted U disk in which recorded programs have been saved; press key “Record List” to choose and play one program, check picture, sound and other functions;
Media playing function
Insert a U disk kept files of picture, sound and video, check picture, sound and other functions;
Supported media formats as below:
Photo:JPEG – BMP - PNG
Video:H.264 - MPEG-1 - MPEG-2, VC-1, FLV
Audio:WMA, MP3, M4A (AAC)
Music port(depending on different models whether contain the port or not
Input audio signal to back VGA MUSIC/AUDIO In port from audio output equipment, check audio output is normal or not.
Other functions check
a. Check timing on/off, sleeping time off, picture/sound mode, OSD, stereo, digital audio port, etc,;
b. Check pure digital audio programs (RADIO) ;
c. Check logical channel number (LCN);
d. Check HDMI ARC;
e. Check HDMI CEC;
f. Check OAD for special customer.
User Menu Setting before Ex-factory
Enter into Factory Menu and choose “Shipment” to perform presetting before ex-factory; 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.
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