Daewoo DV-K*84W Series, Руководство по обслуживанию

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CIRCUIT 6
SECTION 3.
CIRCUIT OPERATION PRINCIPLES
1. OUTLINE
The part that supply DV VOLTAGE to each circuit change AC input voltage into DC voltage. It is based on
SMPS(switching mode power supply) system which is located on main PCB. SMPS module is composed of the
switching circuit and the transformer of the primary part and the recitifier circuit of the secondary part.
2. NAME AND OPERATION OF PINS ON SMPS MODULE
1) Primary Part
2) Secondary Part
3-1. P
OWER
C
IRCUIT
PIN NO NAME FUNCTION
1
AC INPUT SUPPLY AC INPUT VOLTAGE
2
PIN NO NAME FUNCTION
1 +37V
TURN VOLTAGE OF
TUNER (33V)
2 (F+4.5V)
F/L DISPLAY FILAMENT
VOLTAGE SUPPLY
3 (F-GND)
F/L DISPLAY DRIVE
VOLTAGE SUPPLY
4 –27V
F/L DISPLAY DRIVE
VOLTAGE SUPPLY
5 GND SECONDARY GND
6 GND SECONDARY GND
7 GND SECONDARY GND
8 6V EVER 5V, ON/OFF 5V
9 12.4V
CAP MOT, DRUM MOT (12V)
LOADING MOT (12V)