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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Saturday 9 February 2019

SANYO PDP 42XR9DA _ PLASMA DISPLAY _ SERVICE MODE

SANYO PDP 42XR9DA _ PLASMA DISPLAY _ SERVICE MODE _





ADJUSTMENT INSTRUCTIONS

ENTERING FACTORY MENU [SERVICE MENU]
  1. Press “SOURCE”, “2”, “5”, ”8” and “0” in turn to enter factory menu;
  2. Press “CH+” and “CH-” to move the cursor to the adjustment page of the level one factory menu, then press ”OK” to enter;
  3. Press “CH+” and “CH-” to move the cursor up and down;
  4. Press “VOL-” and “VOL+” to adjust the item when the cursor move to a certain adjust item;
  5. Press “MENU” to exit to the previous factory menu;
  6. Press “EXIT” to exit the factory menu at any situation;
  7. Press “OK” to enter the sub factory menu;
ADJUSTMENT ITEMS
  • ADC ADJUST, ADC correction of VGA, Component channel;
  • W/B ADJUST, white balance adjustment;
  • POWER Mode, set the turn-on modes. Standby---standby when power on; Mem---memory; ForceOn---power on; ForceOn can be used for aging; set the “power mode” to “Standby” when preset ex-factory unless the client appointed it;
  • ISP Mode, ON---soft upgrading through VGA port with ISP device, OFF---DDC function of VGA; the setting will not be memory and will be “OFF” when power on again;
  • REST ALL, initialization of the factory and user data; after this item is confirm, the unit will restart and display the guiding image.
  • Factory Data Reset, factory data initialization (including white balance adjustment, ADC correction and other adjusted data);
  • Factory Channel Preset, preset the factory channel; please connect to the center signal source when operating; the present digital frequency is CH28 (529.5MHz), CH33 (564.5MHz) for Australia and CH45 (666MHz) for UK, if the signal changes, perform “DTV manual search” in “Channel” menu and the operation needs 15s or so.
  • MST Debug, the default is OFF. OFF---RS232 should match the design criterion; ON--- it should be convenient for using exploitation tool to adjust. The setting will not be memory and will be “OFF” when power on again;
  • SSC Adjust, adjust the frequency spectrum expand, it will be preset and doesn’t need adjust.
  • AUDIO Curve, adjust the sound curve, it will be preset and doesn’t need adjust.
  • Picture Mode, set the picture values of each channel. Normally, they are preset and needn’t adjust.
  • Backlight: the default value is 100 and needn’t to adjust normally.
  • RFAGC: it will be preset and prepare for adjustment later.
  • There is data in EEPROM after software upgrade, please perform Reset All before the first adjustment.

ADC CORRECTION IN VGA CHANNEL
  1. Switch to VGA channel.
  2. Press” SOURCE”, then press “2, 5, 8, 0” in turn to enter the level one factory menu.
  3. Move the cursor to “ADC ADJUST” and press OK to enter the sub-menu.
  4. Input VGA signal (VG-848 Timing:856(1024x768/60Hz), Pattern:920 Gray 8 step(H)). Move the cursor to “mode”, press CH+ or CH- to select “RGB”, move the cursor to “AUTO ADC” and press OK to adjust automatically till complete.
ADC CORRECTION IN YPbPr CHANNEL
  1. Switch to YPbPr channel.
  2. Press” SOURCE”, then press “2, 5, 8, 0” in turn to enter the level one factory menu.
  3. Move the cursor to “ADC ADJUST” and press OK to enter the sub-menu.
  4. Input YPbPr signal (VG848 Timing:968(483P), Pattern:918 75% Color Bar). Move the cursor to “mode”, press CH+ or CH- to select “YPbPr(HD)”, move the cursor to “AUTO ADC” and press ENTER to adjust automatically till complete.
  5. Input YPbPr signal (VG848 Timing:968(483P), Pattern:918 75% Color Bar). Move the cursor to “mode”, press CH+ or CH- to select “YPbPr(SD)”, move the cursor to “AUTO ADC” and press ENTER to adjust automatically till complete.
WHITE BALANCE ADJUSTMENT
  • For NEC, the default of color temperature of COOL is 11000K and the coordinate is (274, 293); color temperature of NORMAL is 9400K and the coordinate is (286,288), color temperature of WARM is 7200K and the coordinate is (303,319). Each channel can be adjusted separately, “copy all” is that copy the data of present channel to all the channels.  For other users, the color coordinates are cool 12000K (272,278), normal 9300K (285,293), warm 6300K (313,329); “copy all” is that copy the data of present channel to all the channels.
ADJUSTMENT STEPS [NEC FOR EXAMPLE]
  • Switch to HDMI channel and select Dynamic mode;
  • Press” SOURCE”, then press “2, 5, 8, 0” in turn to enter the level one factory menu.
  • Move the cursor to “W/B ADJUST” and press OK to enter the sub-menu.
  • Input DVI/HDMI signal 480i/60Hz 16 step Gray (VG848\VG849\K8256). Move the cursor to “mode”, press CH+ or CH- to select “HDMI” or other HDMI channel, move the cursor to “temperature” and press CH+ or CH- to select “COOL”.
  •  Adjust R-GAIN, G-GAIN, B-GAIN and let the color coordinate of the fourteenth scale be (274,293), adjust G-GAIN slightly, about 2-4 values. (test the right third step for nonsaturation, test the thirteenth step if the right two steps are saturate).
  • Adjust R-OFFSET, G-OFFSET, B-OFFSET and let the color coordinate of the fourth scale be (274,293). Adjust them slightly.
  • When adjusting, please keep the color temperature of high light to be X=274±10, Y=293±10 and the low light to be X=274±10, Y=293±10.
  • Move the cursor to “COPY ALL” and copy the data to the other channels.
  • Check if the color temperature of HDMI NORMAL is up to the mustard (low light acceptable error:±15, high light acceptable error:±15), if not, adjust R-GAIN/ B-GAIN/ R-OFF/ B-OFF.
  • Check the color temperature of COOL, NORMAL and WARM of other channels (ANALOGTV, DVB-T, Video, YPbPr, VGA), if they are not up to the mustard then adjust and store the data separately.
THE REFERENCE OF ADJUSTMENT RULE
  • B gun: lower B gun to increase X, Y coordinate data, while raise B gun to decrease the data.
  • R gun: raise R gun to increase X coordinate data, while lower R gun to decrease the data; (R gun adjustment will affect X and Lv slightly).
  • G gun: raise G gun to increase Y coordinate data, while lower G gun to decrease the data; (G gun adjustment will affect Y and Lv greatly).  Perform “Copy All” of Cool\Normal\Warm .