Monday, 20 September 2021

Toshiba 32A36C-service mode- full schematic diagram and waveforms

 

After turning the power off there might still be a potential voltage that is very dangerous. When removing the Anode Cap, make sure to discharge the Anode Cap's potential voltage.
Do not use pliers to loosen or tighten the Anode Cap terminal, this may cause the spring to be damaged.

Removal procedure of anode cap

Connect one end of an Alligator Clip to the metal part of a flat-blade screwdriver and the other end to ground.
While holding the plastic part of the insulated Screwdriver, touch the support of the Anode with the tip of the Screwdriver.
A cracking noise will be heard as the voltage is discharged.



SERVICE MODE – How to enter

This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter the Service Mode, press both set key and remote control key for more than 1 second.

CONFIRMATION OF HOURS USED
POWER ON total hours can be checked on the screen. Total hours are displayed in 16 system of notation.
NOTE: If you set a factory initialization, the total hours is reset to "0".

Set the VOLUME to minimum.
Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 1 second.
After the confirmation of using hours, turn off the power.


WHEN REPLACING EEPROM (MEMORY) IC

If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE

Enter DATA SET mode by setting VOLUME to minimum.
Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 1 second.
ADDRESS and DATA should appear as FIG 1

ADDRESS is now selected and should "blink". Using the VOL. UP/DOWN button on the remote, step through the ADDRESS until required ADDRESS to be changed is reached.
Press ENTER to select DATA. When DATA is selected, it will "blink".
Again, step through the DATA using VOL. UP/DOWN button until required DATA value has been selected.
Pressing ENTER will take you back to ADDRESS for further selection if necessary.
Repeat steps 3 to 6 until all data has been checked.
When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
After the data input, set to the initializing of shipping.
Turn POWER on.

Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 1 second.
After the finishing of the initializing of shipping, the unit will turn off automatically.

The unit will now have the correct DATA for the new MEMORY IC.


Schematic diagram and printed circuit board



Microcontroller schematic diagram


Chroma section schematic

Deflection section schematic

Power [SMPS] schematic

Sound section schematic

Tuner section schematic

Audio-Video schematic

CRT socket section schematic

Comb filter schematic

AV jack schematic

Waveforms


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