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 11 March 2019

SANYO LCD-37CA8Z SERVICE MODE

SANYO LCD-37CA8Z SERVICE MODE


SANYO LCD-37CA8Z 

SERVICE MODE

White Balance Adjustment
How to adjust White Balance Adjustment
1. Input a white pattern(80%) to the composite input terminal.
2. Set the television to following conditions:
Picture mode: standard
Colour temperature: normal
Pre-heading time: more than 10 minutes
3. Enter the service mode, and select item 291with ▲ or ▼ key.
Select RGB with ▲ or ▼ key.
Press ◄► to adjust the value of RGB until the white balance R, G,B is all 85h.
3. After adjustment, confirm white balance again by normal picture.
On-screen Service Menu System
 How to enter the Service Menu
1. Press MENU button on SIDE controls, MENU will display.
2. Press and hold MUNE button on SIDE controls and press “1” button on remote controls. SERVICE MENU will display.
How to select the service section and service item and change data value:
To select service section: Press the Cursor ▲or ▼ button on the remote control hand set, and press the OK button to enter the SUB menu.
To change data value: Select service item by pressing the Cursor ▲or ▼ button , and change data value by pressing the Cursor ◄or ► button.
Exit from the service menu
Press the MENU button repeatedly or turn off the TV set by pressing the POWER ON/OFF button.

ADC Adjustment
Note: Because White Balance Adjustment will be changed when adjusting ADC. After adjusting ADC, please reset
White Balance Adjustment.
How to adjust ADC
1.Recive 100% COLOUR BAR from AV1.
2. Enter to SERVICE MODE.
3. Remove the cursor from [Source] to [Properties]. And then select "ADC Calibration", press OK button.
4. Wait for about 15 seconds until the adjustment is finished. Then press MENU button to exit.
VCO Adjustment
How to adjust VCO
1. Receive PAL color bar pattern.(ANT input level:58dbuv 75ohms terminated)
2. Connect a digital volt meter to VCO level terminal(TP-VCO) and the ground.
3. Adjust T202, until the volt is 3.6±0.2v DC
AGC Adjustment
How to adjust AGC
1. Receive PAL color bar pattern.(ANT input level:58dbuv 75ohms terminated)
2. Connect a digital volt meter to tuner-AGC terminal(TP-A) and the ground.
3. Adjust the variable resistance VR202, until the volt is 3.2±0.2v DC.
Posted By: FRANK at 03:08
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