HOW TO ENTER SERVICE MODE TO MURATHA TV MURATHA CHASSIS T-255[SANYO]
MODEL: MARKET KIT
Entering into service mode
Press menu key on tv set and sleep key on remote handset simultaneously, again press sleep key on the remote handset.
Service mode keys
· to change pages press cruser left/right keys
· to select parameters within page press cursor up/down keys
service mode adjsutments
1 Enter into service mode
2 Select page 1
3 Adjsut R, G and B bias values to 127
4 Adjust r drive to 63, g drive to 8, b drive to 63.
5 Select page 5.
6 Set cross b/w parameter to 1. remove all inputs to kill video interference.
7 Go to v-kill parameter and change value to 1. ypu will get a h-line
8 Adjsut the screen voltage to get just visible horizontal line.
9 Now adjust through programme keys [1] &[4], [2] &[5], [3] & [6] bias for r,g,b respectively on the remote. Adjust to get a white horizontal line.
10 Now open the raster by selecting cursor left/right key
11 Select cross b/w to 3 to get a white raster.
12 Again through programme keys on the remote do the drive adjustments
13 Use programme keys [1] & [4], [2] &[5], [3] &[6], to adjust r/g/b drives.
14 Press mute to come out of the adjustments.
Similarly enter service mode for adjustments of vertical parameters and rf agc parametes on page 2 and 5 respectievely.
Other parameters i.e sub brightness.colour/tint/sharpness/contrast are adjustable according to customer needs.
Speaker
For T-255 mono kit- 8ohms 3W
For T-255 stereo kit- 8ohms 6W
Spekers should be of the same specifications, as stated above, for better audio output.
Service mode menu
***********************************
page 0
osd cont 90 a
sub bright 63 a
sub cont 50 a
sub colour 60 a
sub tint 32 a
sub sharp 35 a
*************************************
-------------------------------------------------------
page 1
red bias 127 a
green bias 127 a
blue bias 127 a
red drive 63 a
green drive 8 a
blue drive 63 a
C-TEMP R 0 A
C-TEMP G 0 A
C-TEMP B 0 A
-------------------------------------------------------
==============================
PAGE 2
V POS 50HZ 40 A
Vpos 60hz 40 a
V size 50hz 90 a
V size 60hz 82 a
V sc 12 a
V lenearity 17 a
V size cmp 7
==============================
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
page 3
h freq 30
h phase 50hz 9 a
h phase 60hz 7 a
hblk-l 4 a
h blk r 4 a
blank def 0
coring enabl 1 a
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
page 4
colour system 2
sif sys sw 5.5
c ext 0
c by pass 0
c kill on 0
c kill off 0
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
*************************************
page 5
sync kill 0
rf agc delay 32
v-kill 0
cross b/w 0
fm level 16
video level 5
*************************************
==============================
page 6
digital osd 0
audio switch 0
akb def 1
auto flesh 0
count down mode 0
grey mode 0
v sync set up 0
==============================
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
page 7
filter sys 2
vol filter 0
vif sys sw 38.9
brt abl def 0
brt abl threshold 4
brt mid stop def 0
emg abl def 0
opt filt sys 1
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
------------------------------------------------------
page 8
afc gain and gate 0
secam b-y dc 13
secam r-y dc 13
r-y/b-y gain bal 12
r-y/b-y angle 12
b gama select 0
rg gama select 0
-----------------------------------------------------
=============================
page 9
audio mute 0
fm mute 0
video mute 0
sound trap 4
fm gain 0
de-emp tc 1
fbp-blk sw 0
============================
**********************************
page 10
t disable 1
vertical test 0
tint test 0
colour test 0
drive test 0
contrast test 0
osd contrast test 0
akb test 0
**********************************
______________________________
page 11
osd h pos 36
opt col sys 2
opt av sys 0
tune lock clr
select tuner (wittis) (TCL) 5v/9v
lna no
aqudio menu no
for stereo kit yes
logo naming set
semi trans b/g 1
_______________________________
Welcome to Master Electronics Repair! website.Here you will find:Service Modes, Circuit Diagrams,Service manuals, Firmware Update procedure, Disassemble procedure, Universal remote control setup codes, Troubleshooting, Diagnosing, Measuring, and more.... of many of LCD/LED TV/Displays,others various electronic apparates,trough many technical notes and tips/tricks to help repairing/fixing Troubles/ faults,for electrical technicians.This site helps you to save the Earth from electronic waste!
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!
or you can click on the main photo-page to start from the main page. Doing so it starts from the most recent post to the older post simple clicking on the Older Post button on the bottom of each page after reading , post after post.
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 !
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.- If you landed here via any Search Engine, you will get what you searched for and you can search more using the search this blog feature provided by Google. You can visit more posts scrolling the left blog archive of all posts of the month/year,
How to use the site:
or you can click on the main photo-page to start from the main page. Doing so it starts from the most recent post to the older post simple clicking on the Older Post button on the bottom of each page after reading , post after post.
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 !
