Daewoo DWF-5590DP Series, Service Manual, Page: 30 / 63

LOAD DRIVE UNIT
(CW WASH, CCW WASH, DRAINAGE, HOT WATER, COLD WATER, BUBBLE, AUTO OFF)
1) CIRCUIT DIAGRAM AND EXPLANATION
• 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.
30
S7 32
S6 31
S5 30
S4 29
S3 28
S2 27
S1 26
S0 25
R84.3.9K
R38.3.9K
R37.3.9K
R36.3.9K
R35.3.9K
R34.3.9KK
R33.3.9K
R32.3.9K
RA6
(4X103J)
RA5
(4X103J)
Q14
Q13
Q12
Q11
Q10
Q9
Q8
C39
103Z
C36
103
C37
103Z
R52,62,1/2W
R51,62,1/2W
R50,330,1/4W
R49,330,1/4W
R48,330,1/4W
R47,330,1/4W
R46,62,1/2W
R63,100,1W C28,683,250V/AC
C29
R62
TRC1,SM12JZ47
C30,683
C23
C19
R60
TRC2,SM12JZ47
C22,103
R56
TRC3,BCR1AM
C18.223
C17
TRC4,BCR1AM
C21.223
C20
R57
R58
TRC5,BCR1AM
C25,103
R59
C24
TRC6,BCR1AM
C27,103
C26
TRC7,SM8JZ47
6V
D4
1N5399
R61
100K.
2W
!
BL/YW
@
VT
#
BL
&
YW/BK
%
YW
$
RD/BL
*
PK
(
WH/BK
SCK1 6
R10,10K
R45,1K C2,104Z
Q15
A1271
R86,100,1W C40,103,250V/AC
C43
103Z
Q18 C3202
R85,62,1/2W
C41 C104Z
TRC8,SM8JZ47
^
BL/WH