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

Thursday, 21 February 2019

SAMSUNG HCR 4755W - SERVICE MODE _ PROJECTION TV RECEIVER

  

SAMSUNG HCR 4755W - SERVICE MODE _ PROJECTION TV RECEIVER



ENTERING INTO SERVICE MODE

  1. Turn ON the TV and select "Standard" on the picture adjustment mode.
  2. Turn OFF the TV [Standby].
  3. Enter [Mute => 1 => 8 => 2 => Power], in sequence by remote control unit.
  4. If the first attempt fails, re-do stems 1 to 3 again.
SERVICE MODE DISPLAY
----------------------------------------------------------------------------------------------------
DEFLECTION
VIDEO ADJUST 1
VIDEO ADJUST 2
VIDEO ADJUST 3
VIDEO ADJUST 4
VIDEO ADJUST 5
VIDEO ADJUST 6
VERSION INFORMATION
OPTION
RESET
----------------------------------------------------------------------------------------------------

Service Mode Control Keys
  • To select Full Menu display / Move to parent menu => Press Menu
  • To select and item to adjust, use [Up or Dn] keys.
  • To adjust the data value to selected item, use [Right or Left] keys.
***************************************************************
FACTORY DEFAULT DATA:  +DVI connection item is corresponded to DVI application model [HCR4245W].

NO  =>  ITEM  => INITIAL DATA  

  1. V-AMP = 31 
  2. V-SHIFT =32
  3. H EW = 31
  4. H SHIFT = 34
  5. V LIN = 7
  6. UP_LIN =  34
  7. V SC = LOW_LOW = 0
  8. V SC = 7
  9. H PAR = 20
  10. UP_COR = 31
  11. LOW_COR = 31
  12. H TRA = 31
  13. BOW = 31
  14. ANGLE = 31
  15. V POSITON = 31
  16. UP UGC = 0
  17. LO UGC = 0
  18. CXA LEFT BLK = 55
  19. CXA RIGHT BLK = 15
---------------------------------------------------------------------------------------------------------
-----------------VIDEO ADJUST - 1 ---------------------
===========================================================
NO => ITEM => INITIAL DATA
  1. RED CUTOFF = 25
  2. GREEN CUTOFF = 25
  3. BLUE CUTOFF = 25
  4. COLOR ON/OFF = 1
  5. CR OFFSET = 32
  6. CB OFFSET = 32
  7. RED DRIVE = 35
  8. GREEN DRIVE = 35
  9. BLUE DRIVE = 35
  10. SUB BRIGHT = 20
  11. SUB CONTRAST = 8
  12. SUB COLOR = 10 {10 / 15 / 15 / 10 => (NT-analog / Video / S-Video / 480i)} [FIX]
  13. SUB TINT = 6 {6 / 5 / 5 / 5} [FIX]
  14. CTI LEVEL = 1 {FIX}
  15. COL AXIS = 2 {fIX}
  16. LTI LEVEL = 1 [FIX]
  17. LTI MODE = 1 [FIX]
  18. SYSTEM = 2 [FIX].
=========================================================

SAMSUNG HCR-4755W SERVICE ADJUSTMENTS



========= FACTORY DATA:  Video Adjust -2 ===========

NO => ITEM => DATA

  1. ABL MODE = 3
  2. GAMMA = 1
  3. DPIC LEVEL = 2
  4. DC TRANS = 2
  5. ABL TH = 15
  6. VM LEVEL = 2
  7. VM CORING = 0
  8. VM f0 = 2
  9. VM LIMIT = 3
  10. VM DELAY = 0
  11. SHP CD GAIN = 1
  12. SHP f0 = 0
  13. SHP f1 GAIN = 3
  14. PRE/OVER = 1
  15. AKB TIMING = 11
  16. S ABL = 3
  17. P ABL = 10
  18. PICTURE LIMIT = 3
=====================================================

------------------ Video Adjust -3 ----------------

  1. H COMP = 12
  2. V COMP = 8
  3. PIN COMP = 0
  4. AFC COMP = 0
  5. CG HAO = 5
  6. CG VAO = 5
  7. BKG LEVEL = 25
  8. CM THRESHOLD = 42
  9. CM DET TIME = 0
  10. PIXEL SHIFT TIME - 60
  11. H_PEAKING = 2
  12. PFS = 2
  13. LPF 2 = 1
  14. PKCOR = 0
  15. CKILL = 2
  16. AFT ON/OFF = 1
  17. MELODY VOLUME = 10
========================================================

---------------Video Adjust -4 -------------------
  1. Y RF DELAY = 1
  2. YC AV DELAY = 5
  3. CHROMA BAND RF = 0
  4. CHROMA BAND VIDEO = 0
  5. CHROMA BAND S-VIDEO = 1
  6. IF COMP = 2
  7. IF COMP VIDEO = 4
  8. IF COMP S-VIDEO = 4
  9. 9883 RED CUT OFF = 128
  10. 9883 GREEN CUT OFF = 128
  11. 9883 BLUE CUT OFF = 128
  12. 9883 PHASE = 88
  13. 9883 SYNC LEVEL = 50
===========================================================
------------------- Video Adjust - 5 ---------------------
  1. BASE LEVEL = READ
  2. RFDB1_H_PEAKING = 0
  3. RFDB1_LPF2 = 1
  4. RFDB1_PKCOR = 0
  5. RFDB1_SHARPNESS = 75
  6. RFDB2_H_PEAKING = 0
  7. RFDB2_LPF2 = 1
  8. RFDB2_PKCOR = 1
  9. RFDB2_SHARPNESS = 50
  10. RFDB3_H_PEAKING = 0
  11. RFDB3_LPF2 = 2
  12. RFDB3_PKCOR = 1
  13. RFDB3_SHARPNESS = 20
  14. RFD B1_VALUE = 112
  15. RFDB2_VALUE = 200
  16. RFDB3_VALUE = 500
=============================================================

--------------- Video Adjust -6 --------------------
=============================================================
  1. ALPHAL = 128
  2. ALPHAU = 128
  3. CE_CUTOFF = 32
  4. CE_UPPER = 220
  5. CE GAINMAX L = 160
  6. CE GAINMAX U = 160
  7. GAIN1X = 16
  8. GAIN1Y = 8
  9. GAIN2X = 8
  10. GAIN 2Y = 4
  11. GAIN 3X = 1
  12. CORING_ON = 1
  13. CORING_TH1 = 2
  14. CORING_TH2 = 1
  15. CORING_TH3 = 1
  16. SD3_K = 8
  17. SKIN_X = 24
  18. SKIN_Y = 29
  19. SCALE_R = 75
  20. SCALE_ALPHA = 140
  21. GAMMA ON = 0
  22. DITHER MODE = 0
  23. NDON = 1
  24. NEOnDE = 1
  25. NEOnCE = 1
  26. RTH2 = 10
  27. SUB-CONTRAST = 128
  28. SUB-BRIGHTNESS = 0
=========================================================
------------  OPTION -------------
  1. Anynet Enable = On
  2. DNle = Off
  3. Panel Key = Enter
  4. LNA = On
  5. DVI = Off
  6. V-Chip = USA
==========================================================
Posted By: FRANK at 02:20
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