Daewoo WP-895F, CP-885F service manual Fbt

Service manual WP 895/895F, CP885/885F

*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

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