Master Electronics Repair !

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!

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.

How to use the site:

- 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,
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 !

Thursday, 28 March 2019

JVC LT-42DP8BG-P - SERVICE MODE – ADJUSTMENTS – ERROR CODES

JVC LT-42DP8BG-P JVC LT-42DP8BJ-P JVC LT-42P80BU-P - 100Hz Clear Motion Drive DynaPix HD LED LCD TV

SERVICE MODE – ADJUSTMENTS - Default Data Values & ERROR CODES

ADJUSTMENT PREPARATION
There are 2 ways of adjusting this TV :

> One is with the REMOTE CONTROL UNIT and the other is the conventional method using adjustment parts and components.
> The adjustment using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values.

> Make sure that connection is correctly made AC to AC power source.
> Turn on the power of the TV and measuring instruments for warming up for at least 30 minutes before starting adjustments.
> If the receive or input signal is not specified, use the most appropriate signal for adjustment.
> Never touch the parts (such as variable resistors, transformers and condensers) not shown in the adjustment items of this service adjustment.

PRESET SETTING BEFORE ADJUSTMENTS

Picture Mode > Standard

Picture Adjustments > Centre

Colour Temp. > Normal

Super Digipure > Auto

Movie Theatre > Auto

Colour Management > On

Picture Management > On

Zoom > Full

MEASURING INSTRUMENT AND FIXTURES
Signal generator (Pattern generator) [PAL]
Remote control unit

ADJUSTMENT ITEMS
VIDEO CIRCUIT
WHITE BALANCE (HIGH LIGHT) adjustment.

BASIC OPERATION OF SERVICE MODE
HOW TO ENTER THE SERVICE MODE
Press [INFORMATION] key and [MUTING] key on the remote control unit simultaneously to enter the SERVICE MODE SCREEN.
In the SERVICE MENU, press the [1] key to display ADJUSTMENT MODE SCREEN

[Before enter the SERVICE MODE, press the [MODE] key to confirm that "TV" position is indicated. If it is in a wrong position, the SERVICE MODE operation cannot be performed.
When a number key other than the [1] key is pressed in the SERVICE MODE SCREEN, the other relevant screen may be displayed. This is not used in the adjustment procedure. Press the [MENU] key to return to the SERVICE MODE SCREEN.]

HOW TO EXIT THE SERVICE MODE
Press the [MENU] key to exit the Service mode.

SERVICE MENU SCREEN and SERVICE MODE SELECT KEY LOCATION

Adjustment mode

This mode is used to adjust the VIDEO CIRCUIT and the MTS CIRCUIT.

HOW TO ENTER THE ADJUSTMENT MODE
When the SERVICE MENU SCREEN of SERVICE MODE is displayed, press [1] key to enter the ADJUSTMENT MODE.

DESCRIPTION OF STATUS DISPLAY

SIGNAL SYSTEM

The signal PAL50 : PAL50Hz (Composite / S-video)
PAL60 : PAL60Hz (Composite / S-video)
SECAM : SECAM
NTSC3 : NTSC3.58
NTSC4 : NTSC4.43
525I : 525i (Component)
525P : 525p
625I : 625i (Component)
625P : 625p
1125I5 : 1125i 50Hz
1125I6 : 1125i 60Hz
RGB5 : RGB 525i
RGB6 : RGB 625i
PCVGA : PC (VGA)
PCXGA : PC (XGA)
D625I : DVB-T 625i
H525I : HDMI 525i
H525P : HDMI 525p
H625I : HDMI 625i
H625P : HDMI 625p
H750P : HDMI 750p
H125I5 : HDMI 1125i 50Hz
H125I6 : HDMI 1125i 60Hz
--- : OTHER

ZOOM MODE
State of the SCREEN SIZE or MULTI PICTURE is displayed.
SINGLE SCREEN

FULL : FULL
PANO : PANORAMIC
1609 : 16:9 ZOOM
1609S : 16:9 ZOOM SUBTITLE
1409 : 14:9 ZOOM
REGU : REGULAR

MULTI SCREEN

M2 : 2-pictures multi
M12 : 12-pictures multi

PICTURE MODE

SOFT : SOFT
STD : STANDARD
BRI : BRIGHT

COLOUR TEMP.

H : COOL
M : NORMAL
L : WARM

SETTING ITEM NAME
Setting item name are displayed. For the setting item names to be displayed, refer to "INITIAL SETTING VALUES IN THE SERVICE MODE"

SETTING ITEM NO
Setting item numbers are displayed. The setting item numbers to be displayed are listed below.

S001 - S009 Video system setting

T001 - T003 (NOT USED)

M001 - M224 (NOT USED)
F001 - F002 (NOT USED)
D001 (NOT USED)
Z001 (NOT USED)

SETTING VALUE (DATA)
The SETTING VALUE is displayed.

CHANGE AND MEMORY OF SETTING VALUE
SELECTION OF SETTING ITEM
[FUNCTION Up / Dn key]
For scrolling up / down the setting items

S001...S009 ↔ T001...T003 ↔ M001...M224 ↔ F001...F002 ↔ D001 ↔ Z001↔return to S001

CHANGE OF SETTING VALUE (DATA)
[FUNCTION Right / Left key.
For scrolling up / down the setting values

MEMORY OF SETTING VALUE (DATA)
Changed setting value is memorized by pressing [MUTING] key.

INITIAL SETTING VALUES IN THE SERVICE MODE
Perform fine-tuning based on the "initial values" using the remote control when in the Service mode.
The "initial values" serve only as an indication rough standard and therefore the values with which optimal display can be achieved may be different from the default values. But, don't change the values that are not written in "ADJUSTMENT PROCEDURE". They are fixed values.

SELF CHECK FEATURE
This unit comes with the "Self check" feature, which checks the operational state of the circuit and displays/saves it during failure. Diagnosis is performed when power is turned on, and information input to the main microcomputer is monitored at all time. Diagnosis is displayed in 2 ways via screen display and LED flashes. Failure detection is based on input state of I2C bus and the various control lines connected to the main microcomputer.

HOW TO ENTER THE SELF CHECK MODE
Before enters the SELF CHECK MODE, press the [MODE] key to confirm that "TV" position is indicated. If it is in a wrong position, the SELF CHECK MODE operation cannot be performed.
> Press the [INFORMATION] key and [MUTING] key simultaneously, then enter the SERVICE MODE.
> Press the [2] key SELF CHECK MODE.
> Press the [RED] key to enter Page 2 of the SELF CHECK MODE.
[Use the [GREEN] key to toggle between Page 1 and Page 2]

[When a number key other than the [2] key is pressed in the SERVICE MODE screen, the other relevant screen may be displayed.
This is not used in the SELF CHECK MODE. Press the [MENU] key to return to the MAIN MENU SCREEN.]

HOW TO EXIT THE SELF CHECK MODE
To Save Failure History
Turn off the power by unplugging the AC power cord plug when in the Self check display mode.
To Clear (Reset) Failure History
Turn off the power by pressing the [POWER] key on the remote control unit when in the Self check display mode.

FAILURE HISTORY
Failure history can be counted up to 9 times for each item. When the number exceeds 9, display will remain as 9. Failure history will be stored in the memory unless it has been deleted.

POINTS TO NOTE WHEN USING THE SELF CHECK FEATURE
In addition to circuit failures (abnormal operation), the following cases may also be diagnosed as "Abnormal" and counted.
Temporary defective transmissions across circuits due to pulse interruptions.
Misalignment in the on/off timing of power for I2C bus (Vcc) when turning on/off the main power. Therefore, turn on the main power, and then wait for about 3 seconds before starting Self check. If recurrences are expected, ensure to clear (reset) the failure history and record the new diagnosis results.