REPAIRING AND NOT THROWING AWAY

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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You can even visit all posts, time to time, when reaching the bottom end of each page and click on the Older Post button.

- If you arrived here at the main page via bookmark you can visit all the site scrolling the left blog archive of all posts of the month/year pointing were you want , or more simple You can even visit all blog posts, from newer to older, clicking at the end of each bottom page on the Older Post button.
So you can see all the blog/site content surfing all pages in it.

- The search this blog feature provided by Google is a real search engine. If you're pointing particular things it will search IT for you; or you can place a brand name in the search query at your choice and visit all results page by page. It's useful since the content of the site is very large.

Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............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!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Showing posts with label NEC. Show all posts
Showing posts with label NEC. Show all posts

Tuesday, 2 April 2019

NEC INTEGRA-PX50XM1A – PX50XM1G SERVICE MODE - ADJUSTMENTS - - PLASMA DISPLAY

SERVICE MODE - ADJUSTMENTS - NEC INTEGRA-PX50XM1A – PX50XM1G - PLASMA DISPLAY

SERVICE MODE & ADJUSTMENTS
1. When the PDP module is replaced, adjust the sections according to the adjusting items 1 to 4 specified below.
2. When the power unit is replaced, adjust the sections according to the adjusting items 1 to 3 specified below.
3. When the MAIN PWB or the VIDEO PWB is replaced, adjust the sections according to the adjusting item 4 specified below.
4. No adjustments are required in case of any replacement other than 1 and 2 above.
{CAUTION} When you exchange PDP module, please be sure to clear integrated time to “0” by the following “How to clear the integrated time”.
How to clear the integrated time
Assume the following factory mode by the use of the remote control. Press “PROCEED” key six times to get the screen of “USAGE TIME”. In this state, the integrated time up to the present time is displayed.
The integrated time is cleared to “0” when the remote control keys are pressed in the order of “MUTE” →POSITION “UP” →POSITION “DOWN” →“OFF TIMER”.
How to enter or withdraw from the factory setting mode:
Press the keys in the sequential order of [OFF TIMER] →[EXIT] →[MUTE] →[OFF TIMER].
When a conventional remote control is used:
Press the keys in the sequential order of [OFF TIMER] →[OK] →[MUTE] →[OFF TIMER].
At that time, use the [MENU] key in place of the [PROCEED] key.
1. Adjustment of +170V
(1) Using any video signal of VIDEO input, DVD/HD input, or RGB input, and display a color bar signal. Turn on the power switch of the main unit.
(2) Turn the volume control (RV4) in the [+170V ADJ] section of the power unit, and adjust the voltage value between TP3 (+170V output) and TP4 (GND) of the power unit so that this voltage settles within the range of “specified voltage of the PDP module (Value Vs on the label shown below) ±1V.”
2. Adjustment of +70V
(1) Using any video signal of VIDEO input, DVD/HD input, or RGB input, and display a color bar signal. Turn on the power switch of the main unit.
(2) Confirm that the voltage value between TP2 (+70V output) and TP4 (GND) of the power unit is maintained at “70 ±1V.”  Otherwise, turn the volume control (RV3) in the [D+70V ADJ] section so that the voltage value is maintained at “70 ±1V.”
3. Adjustment of +5V
(1) Use any video signal of VIDEO input, DVD/HD input, or RGB input, and display a color bar signal.
(2) Confirm that the voltage value between TP1 (+5V output) and TP4 (GND) of the power unit is maintained at “5.1 ±0.1V.”  Otherwise, turn the volume control (RV2) in the [+5V ADJ] section so that the voltage value is maintained at “5.1 ±0.1V.”
4. Screen position and phase adjustment
Adjustment of the range of horizontal display presented at the PDP module
Adjustment of the range of vertical display presented at the PDP module
Adjustment of the signal position in horizontal direction within the H POS display range
Adjustment of the signal position in vertical direction within the V POS display range.
Adjustment of the VIDEO screen position
Make correct adjustments of the display range with [MHPOS] and [MVPOS].
(1) Enter an input of NTSC monoscopic signal in the VIDEO input terminal.
(2) Select the VIDEO input by the use of the relevant key of the remote control or the CTL PWB.
(3) Enter the factory shipment setting mode by using the factory shipment control command of the remote control.
(4) Press the [PROCEED] key to obtain the [POSITION] screen.
(5) Press the [WIDE] key to select the [STADIUM] mode. ([STADIUM] mode in the initial state)
(6) In case of any deviation from the display range of the PDP module, press the cursor key [ ] or [v] of the remote control to select [MHPOS] or [MVPOS]. Press the cursor key [<] or [>] for adjustments.
(7) Press the cursor key [Up ] or [Dn] of the remote control to select [H POS].
(8) Press the cursor key [<] or [>] for adjustments so that the right and left are balanced.
(9) Press the cursor key [Up ] or [Dn] of the remote control to select [V POS].
(10) Press the cursor key [<] or [>] for adjustments so that the upper and lower are balanced.
(11) Confirm that [H PHA] is maintained at 0.
(12) Confirm that [H CLK] is maintained at 0.
(13) In the same manner, press the [WIDE] key to select the [ZOOM] mode, the [NORMAL] mode, or the
[FULL] mode. Adjust the horizontal and vertical positions, and confirm that [H PHA] and [H CLK] are maintained at 0, respectively.
(14) Change the input signal to the PAL monoscopic signal and repeat the steps of (4) to (14) above.
(15) Withdraw from the factory mode.
Adjustment of the DVD/HD screen position
Make correct adjustments of the display range with [MHPOS] and [MVPOS].
(1) Enter an input of HDTV monoscopic signal in the DVD/HD input terminal. According to the “convenient functional setting” in the [MENU] screen, press the cursor key [^] or [v] of the remote control to confirm that [HD SELECT] has been set at [1035i].
(2) Select the HD input by the use of the relevant key of the remote control or the CTL PWB.
(3) Enter the factory shipment setting mode by using the factory shipment control command of the remote control.
(4) Press the [PROCEED] key to obtain the [POSITION] screen.
(5) In case of any deviation from the display range of the PDP module, press the cursor key [Up ] or [Dn] of the remote control to select [MHPOS] or [MVPOS]. Press the cursor key [<] or [>] for adjustments.
(6) Press the cursor key [Up ] or [Dn] of the remote control to select [H POS].
(7) Press the cursor key [<] or [>] for adjustments so that the right and left are balanced.
(8) press the cursor key [Up ] or [Dn] of the remote control to select [V POS].
(9) Press the cursor key [<] or [>] for adjustments so that the upper and lower are balanced.
(10) Confirm that [H PHA] is maintained at 0.
(11) Confirm that [H CLK] is maintained at 0.
(12) Change the input video signal to the NTSC component signal and repeat the steps of 1-1 (3) to (11) above.
(13) Change the input video signal to the DTV 1080i signal and repeat the steps of 1-1 (3) to (11) above.
(14) Change the input video signal to the DTV 1080i signal. Press the cursor key [<] or [>] of the remote control to select [1080B] for [HDS] of the screen. Repeat the steps of 1-1 (3) to (11) above. Return [HDS] to [1080i].
(15) Change the input video signal to the DTV 720P signal and repeat the steps of 1-1 (3) to (11) above.
(16) Change the input video signal to the DTV 480P signal and repeat the steps of 1-1 (3) to (11) above.
(17) Withdraw from the factory shipment setting mode.
Posted By: FRANK at 04:04
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Monday, 18 March 2019

NEC DTE-29U1TH - PF68T32 - SCHEMATIC [CIRCUIT DIAGRAM] - USING ICS - STR-F6654 / STR-F6653 – PC-817C – SE130/SE140/DP142 – MSP3465G/MSO3415D- TDA8946J – TDA8358J – TDA9385-N2 / TDA9365-N2 - UNIVERSAL REMOTE CONTROL SET-UP CODES

NEC DTE-29U1TH - PF68T32 - SCHEMATIC [Circuit Diagram] - Using ICs - STR-F6654 / STR-F6653 – PC-817C – SE130/SE140/DP142 – MSP3465G/MSO3415D- TDA8946J – TDA8358J – TDA9385-N2 / TDA9365-N2 - Universal Remote Control Set-up Codes


SCHEMATIC [FULL]
{Click on Schematics to Zoom In}
SMPS SECTION
Universal remote control setup codes

With GE universal remote: 0181 0004 0005 0009 0003 0010 0095 0141 { 003, 004, 005, 006, 009, 010, 085, 089, 095, 141, 181}
With RCA RCR 311W: 1002, 1004, 1013, 1025, 1046, 1059, 1078, 1205
With RCA RCR 312W: 10030, 10056, 11704, 11797
With 6-in-one super remote: 016,017,018,022,098,102,108,213
With other remotes: 1105 1157 1336 10581160 1052 1359 1418 1233 1102 1274 1046 1065 1232
Posted By: FRANK at 04:00
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Saturday, 23 February 2019

NEC - INTEGRA PLA50V1 PLASMA TV SERVICE MODE AND ADJUSTMENTS


NEC - INTEGRA PLA50V1 PLASMA TV SERVICE MODE AND ADJUSTMENTS



METHOD OF ADJUSTMENTS
  1. When PDP module is replaced, adjust the sections according to adjustning items 1 to 4 specified below.
  2. When power unit is replaced, adjust the section according to the adjusting items 1 to 3 specified below.
  3. When main PWB of the VIDEO PWB is replaced, adjust the sections according to adjusting item 4 specifed below.
  4. No adjustments are required in case of any replacements other than 1 and 2 above.
When PDP module is is exchanged, be sure to clear integrated time to "0" by following "How to clear the integrated time".

HOW TO CLEAR THE INTEGRATED TIME.
Assume the following factory mode by the using of remote control.  Press 'PROCEED' key 6 times to get the screen of "USAGE TIME",  In this state, the integrated time up to the present time is displayed.  
The integrated time is cleard to '0' when the remote control keys are pressed in the order of 'MUTE=>POSITION UP=>POSITION DOWN=>OFF TIMER'.

TO ENTER OR WITHDRAW FROM THE FACTORY SETTING MODE.
  • Press keys in sequential order of  
  • [OFF-TIMER=>EXIT=> MUTE=>OFF TIMER] 
WHEN A CONVECTIONAL REMOTE CONTROL IS USED
  • Press the keys in the sequential oreder of [OFF-TIMER => OK => MUTE => OFF TIMER]
  • All that time, use the Menu Key in place of 'Proceed" key.
ADJUSTMENT OF THE VIDEO SCREEN POSITION

  1. Enter an input of NTSC microscopic signal in the video input terminal.
  2. Select the 'Video' input by the use of relevant key on the remote control
  3. Enter the factory shipment mode by using factory shipment command of the remote.
  4. Press 'Proceed' key to obtain the [Position] screen.
  5. Press [Wide] key to select the [stadium] mode.  Stadium mode in the initial state.
  6. In case of any deviation from the display range of the PDP module, Press cursOr key 'Up' or 'Dn' of the remote control to select [MHPOS] or [MVPOS].  Press cursor key 'Right' of 'Left' for adjustments.
  7. Press cursor key Up or Dn of the remote to select [H-POS].
  8. Press cursor key Right or Left for adjustments so that the right and left are balanced.
  9. Press cursor key Up or Dn of the remote to select [V-POS].
  10. Press cursor key Left or Right of the remote for adjustment, so that the upper and lower are  balanced.
  11. Confirm that  [H-PHA] is maintained at '0'.
  12. Confirm that [H CLK] is maintained at '0'.
  13. In the same manner, press [Wide] key to select the 'Zoom' mode, the 'Normal' mode or the 'Full' mode.  Adjust the horizontal and vertical positions and confirm  that H-PHA and H CLK are maintained at '0', respectively.
  14. Change the input signal to PAL microscopic signal, and repeat the steps 4 to 14 above.
  15. Withdraw from Factory Mode.
ADJUSTMENT OF DVD/HD SCREEN POSITION

  1. Enter an input of HDTV monoscopic signal in the DVD/HD input terminal .  According to the 'convenient functional setting' in the 'Menu' screen, press cursor key Up of Dn of the remote control to confirm that [HD SELECT] has been set at [1035i].
  2. Select the HD input by the use of relevant key of the remote control.
  3. Enter the 'Factory Shipment' setting mode by using the factory shipment control command of the remote control.
  4. Press [PROCEED] key to obtain [POSITION] screen.
  5. In case of any deviation from the display range of the PDP module, press the cursor key Up or Dn on the remote control to select [MHPOS] or [MVPOS].  Press the cursor key Left or Right for adjustments.
  6. Press key Up or Dn of the remote control to select [H-POS].
  7. Press cursor key Right or Left for adjustment so that the right and left are balanced.
  8. Press cursor key Up or Dn of the remote control to select [V-POS].
  9. Press cursor key Right or Left for adjustment so that the upper or lower are balanced.
  10. Confirm that [H PHA] is maintained at '0'.
  11. Confirm that [H CLK] is maintained at '0'.
  12. Change the input video signal to NTSC  component signal, and repeat steps 3 to 11 of above.
  13. Change the input video signal to DTV1080i signal and repeat steps 3 to 11 above.
  14. Change the input video signal to the DTV1080i signal.  Press the cursor key Right or Left of the remote control to select [1080B] for [HDS] of the screen.  Repeat steps 3 to 11 above.  Return [HDS] to [1080i].
  15. Change the input video signal to the DTV 720P signal and repeat steps 3 to 11 above.
  16. Change the input video signal to the DTV 480P signal and repeat steps 3 to 11 above.
  17. Withdraw from the factory shipment setting mode
Posted By: FRANK at 04:33
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NEC - DTE29U1TH SERVICE MODE

NEC - DTE29U1TH SERVICE MODE



TO SWITCH THE SET TO SERVICE MODE

  • Select program number [91].
  • Adjust 'Sharpness' to minimum value, and exit all menu.
  • Quickly press the key sequence [ RED=>GREEN=>MENU].
  • To exit service mode, press 'Menu' key or Operate Standby key.
  • In service mode, press 'OK' to stop the micro controller.  The I2C bus is free and the set can be controlled by external equipment. 
  • Press 'OK' again to allow the micro controller to control the set again.
Posted By: FRANK at 04:31
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HOW TO ENTER SERVICE MODE - NEC - DTA-14V4THS _ DTA-20V4THS _ DTA-21V4THS

HOW TO ENTER SERVICE MODE - NEC - DTA-14V4THS _ DTA-20V4THS _ DTA-21V4THS

Applicable to NEC DTA-14V4THS - DTA-20V4THS - DTA-21V4THS - CHASSIS : CP-185A (AUSTRALIA);  NEC Model : N3481 - N4881 - FS572
TO ENTER SERVICE MODE [Australian Model Sets]
  • Select Program Number [91].
  • Adjust 'Sharpness' to minimum, and exit all menu.
  • Quickly press [RED => GREEN => MENU]
LIST OF SERVICE ITEMS
  1. => AGC
  2. => BLACK-R
  3. => BLACK-G
  4. => WP RED
  5. => WP GREEN
  6. => WP BLUE
  7. => H-SHIFT
  8. => V-SLOPE
  9. => V-AMP
  10. => S-CORRECT
  11. => V-SHIFT
  12. => CH-LOCK
  13. => MAX VOL
  14. => AV-START
  15. => KEY LOCK
  16. PSNS MODE.
To EXIT service menu, press Menu key or Standby key.
In service mode press 'OK' to the micro controller i.e the I2C bus is free, and the set can be controlled by external equipment.
Press 'OK' again to allow the micro computer to control the set again.
METHOD OF CHANGE FROM DW REMOCON KEY CODE to NEC
1. Select program number [91]
2. Adjust sharpness to minimum and exit off menu.
3. Press volume ◄  Key 3 times and volume  ► Key 3 times on front local key-board.

When changed NEW EEPROM(IC702), Remocon key code was changed Daewoo. In order to change NEC Remocon key code, do above procedure.
G2 alignment
* Set TV in NORMAL mode
* TV in AV mode without video signal ? Black screen.
* TV preset with WP Red, WP Green and WP Blue equal to 32.
* TV preset with Black R, Black G equal to 8.
**Adjust screen volume ( on FBT ) such that the highest cathode cut-off voltage     measured on CRT board, is V-cutoff 5V
Posted By: FRANK at 04:30
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