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!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Monday 25 March 2019

JVC LTZ37SX5 - SERVICE MODE - ADJUSTMENTS

JVC LTZ37SX5 - SERVICE MODE - ADJUSTMENTS




TO ENTER SERVICE MODE
  • Press [DISPLAY] 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.
  • Press the [MENU] key to exit the Service mode
NOTE:
Before entering the SERVICE MODE, confirm that the setting of PIP/TV/DVD switch is at the "TV" side. If the switches have not been properly set, you cannot enter the SERVICE MODE.
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.
ADJUSTMENTS
  • 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.
  1. 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.
  2. Make sure that connection is correctly made AC to AC power source.
  3. Turn on the power of the TV and measuring instruments for warming up for at least 30 minutes before starting adjustments.
  4. If the receive or input signal is not specified, use the most appropriate signal for adjustment.
  5. Never touch the parts (such as variable resistors, transformers and condensers) not shown in the adjustment items of this service adjustment.
PRESET SETTING BEFORE ADJUSTMENT

SETTING ITEM
SETTING POSITION
PICTURE MODE
STANDARD
PICTURE ADJUSTMENTS
CENTER
WHITE BALANCE
MID
DIGITAL VNR
MIN
SUPER DIGIpUNE
AUTO
PULL DOWN
AUTO
COLOR MANAGEMENT
ON
PICTURE MANAGEMENT
ON
SOUND ADJUSTMENTS
CENTER
BBE
OFF
CINEMA SURROUND
OFF
A.H.B
OFF
ZOOM
FULL


SIGNAL SYSTEM

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


RGB5 : RGB 525i
RGB6 : RGB 625i
PCVGA : PC (VGA)
PCXGA : PC (XGA)
H525I : HDMI 525i
H525P : HDMI 525p
H625I : HDMI 625i
H625P : HDMI 625p
H750P : HDMI 750p
H125I5 : HDMI 1125i 50Hz
H125I6 : HDMI 1125i 60Hz
H125I6 : HDMI 1125i 60Hz
ZOOM MODE
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
STD : STANDARD
BRI : BRIGHT
SOFT : SOFT

WHITE BALANCE
H : COOL
M : MID
L : WARM
SETTING ITEM NUMBER
  • Setting item numbers are displayed. For the setting item names to be displayed, refer to "INITIAL SETTING VALUES IN THE SERVICE MODE".
SELECTION OF SETTING ITEM
  • FUNCTION UP | DN key.  For scrolling up / down the setting items.
CHANGING THE DATA VALUE TO SELECTED ITEM
  • FUNCTION LEFT | RIGHT  key.  For scrolling up / down the setting values.
TO MEMORIZE THE ADJUSTED DATA VALUE
  • Changed setting value is memorized by pressing [MUTING] key.
Posted By: FRANK at 03:03
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