Daewoo DWF-5590DP Series Service Manual page 30

LOAD DRIVE UNIT
(CW WASH, CCW WASH, DRAINAGE, HOT WATER, COLD WATER, BUBBLE, AUTO OFF)
1) CIRCUIT DIAGRAM AND EXPLANATION
S7 32
S6 31
S5 30
S4 29
S3 28
S2 27
S1 26
S0 25
SCK1 6
• Controlling load of button input in MICOM terminal, it is selected to 'L' or 'H'. It is selected to 'H' in running load case and
in 'L' case, load driving is finished. In clockwise rotation of washing motor, as MICOM No. 31 is changed 0V to 5.4V,
TR(Q14, C3202Y) is turn on. And then, the TRIAC1(SM12JZ47) is turn on, the source of electric power is supplyed to
washing motor for clockwise rotation. The TRIAC, as switching element, force to 'ON' or 'OFF' by use of the
Q14(C3202Y). In the rest loads, when the MICOM terminal voltage changes 0V to 5.4V, each TRIAC DRIVE TR is active,
and then TRIAC switches the source of electric power to loads.
• The purpose of using the MICOM terminal No. 6 Q15(A1271Y) is that the Q15 prevents the instant supply of electric
power supply to loads, in case MICOM's action is wrong by means of pushing initial power switch.
R84.3.9K
RA6
R38.3.9K
(4X103J)
R37.3.9K
R36.3.9K
R35.3.9K
RA5
R34.3.9KK
(4X103J)
R33.3.9K
R32.3.9K
C36
103
R10,10K
R45,1K C2,104Z
R86,100,1W C40,103,250V/AC
C41 C104Z
TRC8,SM8JZ47
R85,62,1/2W
R63,100,1W C28,683,250V/AC
Q18 C3202
C29
C43
R52,62,1/2W
103Z TRC1,SM12JZ47
C30,683
R62
Q14
C23
C39
R51,62,1/2W
TRC2,SM12JZ47
103Z
R60
C22,103
Q13
C19
C37
R50,330,1/4W
TRC3,BCR1AM
103Z
R56
C18.223
Q12
C17
R49,330,1/4W
TRC4,BCR1AM
R57 C21.223
Q11
C20
R48,330,1/4W
TRC5,BCR1AM
R58 C25,103
Q10
C24
R47,330,1/4W
TRC6,BCR1AM
R59
C27,103
Q9 6V
C26
R46,62,1/2W
TRC7,SM8JZ47
Q8
Q15
A1271
! BL/YW
^ BL/WH
@ VT
D4
1N5399
# BL
R61
100K.
2W
& YW/BK
% YW
$ RD/BL
* PK
( WH/BK
30