51DS-02H (serv.man31). Countermeasure for doming at high beam current - Sharp TV Technical Bulletin (repair manual)

51ds-02h (serv.man31) technical bulletin
Model
51DS-02H (serv.man31)
Pages
1 Few pages! See other manuals at the bottom of the first or last page.
Size
13.51 KB
Type
PDF
Document
Technical Bulletin
Brand
Device
TV / CTR / Countermeasure for doming at high beam current
File
51ds-02h-sm31.pdf
Date

Read Sharp 51DS-02H (serv.man31) Technical Bulletin online

 
Sharp Electronics (UK) Limited 
Reference JC110199/2
   
Revision  3 
 
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units   
CTV990111 
Month of Issue: January 1999 
        Classification:                White      
TELEVISION TECHNICAL BULLETIN 
     Page 1 of 1 
 
 
MODELS 51DS02H 51DS03H 51DS05H 59DS03H 
 59DS05H 66DS03H 66DS05H 66ES03H 
 66ES05H    
 
 
SYMPTOM Doming caused by high beam current in limited areas of the CRT shadowmask 
causing short term purity errors.           
 
ACTION Reduce the factory pre-sets for brightness, saturation and contrast to a point at which 
doming does not appear.  
 
This is achieved by changing the following NVM locations  
 
Function  
NVM Page NVM Position Factory Default Change To 
Brightness   00 04 28 24 
Saturation   00 05 32 2C 
Contrast     00 06 50 4B 
 
To set these NVM positions, enter the test mode as described in the service manual, 
then adjust to the values given above (these are only given for guidance and may be 
changed as necessary).  To store the values, remember to press the standby button 
on the remote control while at that location.  
 
Note: 
It is important that after carrying out the above changes, the user picture set up menu 
is entered and the normalised button is pressed.  Turn the reciever off, then back on 
again using the mains button to ensure that the settings are memorised. 

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Here you can read online and download Sharp 51DS-02H (serv.man31) Technical Bulletin in PDF. 51DS-02H (serv.man31) technical bulletin will guide through the process and help you recover, restore, fix, disassemble and repair Sharp 51DS-02H (serv.man31) CTR. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.