Daewoo dsc-3220e-3220l Manuel D’Utilisation

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* power supply functioning during TV set normal run mode

- I801 transmits controlled pulses to T801 which generates DC voltages after rectifications by secondary part diodes
and electro capacitors (by example by D820 and C813 on 143V  supply voltage line).

- 8V, 5V, 3.3V supply voltage lines have stabilized voltages obtained by I820, I822, I823 voltage regulators.

- On 143V  supply voltage line, R823 resistor has been chosen to reach exact DC voltage required on this line.

- 143V  supply voltage line includes an IC error amplifier (I806) which corrects unexpected DC voltage variations on

this line.

* power supply IC delivery during TV set normal run

power supply line

IC power supply delivery

Remarks

143V

FBT

FBT supplies 43V to I301 vertical IC
FBT supplies 43
V to T401 H- drive for CP785
FBT supplies 12V to I301 vertical IC
FBT supplies 33V to the tuner
FBT supplies 188V to I901 video amplifier pin 6

14.5V

I602 sound amplifier pins 3-16

14V

T401 H- drive

8V

I501 Main IC pins 14-39
I601 Sound Demod pins 38-39-40

5V

I703 IR receiver pin 1
I501 Main IC pins 3-15-45
I601 Sound Demod pins 7-18-57
I702 EEPROM pin 8
tuner

3.3V

I501 Main IC  pins 25-54

b) TV set on stand-by mode

* TV set circuit diagram on stand-by mode