Daewoo DWF-5590DP Series Service Manual page 32

3) CAUTION AND CHECKING FOR A/S
•If load is active as soon as the power switch is 'ON', check the driving TRIAC of load.
SM12JZ47 (12A), SM8JZ47 (8A) SM12JZ47 (12A), SM8JZ47 (8A)
shape
• CHECK the resistance of the T1 & T2
of the TRIAC. (∞Ω).
• CHECK the total parts without fail, in
case the TRIAC has a short circuit.
T1 T2 G
•Check the MICOM output terminal, if the load doesn't act although the TRIAC isn't anything wrong.
•Sometimes it is happened that the TRIAC DRIVE TR has a short circuit or an open circuit. In this case, being measured the
resistance between the TR E & C with tester, the resistance value should be near the oo Ω. If not, the DRIVE TR is out of
order.
•If the ceramic condenser (C17, C19, C20, C23, C24, C26, C29) using by protecting the noise between the GATE & T1 of
each TRIAC has a short circuit, it has no voltage drop between the T1 and GATE. Therefore, the TRIAC is not turn on.
•If MICOM terminal No. 6 is not active from 5.4V to 0V, all DRIVE TR of the TRIAC are not turn on. Therefore, if the TRIAC is
out of order, to begin with, check the MICOM terminal No. 6 and TR Q15(A1271) necessarily.
•The TRIAC's names and the values of the snubber & resistance of the total parts.
LOAD
CW WASH
CCW WASH
DRAINAGE
HOT & COLD
WATER
BUBBLE
GENERATOR
FUNCTION
OF POWER
AUTO OFF
RESISTANCES OF
TRIAC'S NAME
SM12JZ47
BCR 12PM-14L
SM12JZ47
BCR12PM-14L
BCR1AM-12L
BCR1AM-12L
BCR1AM-12L
SM8JZ47
BCR8PM-14L
shape
T1 G T2
THE GATE'S
THE VALUES OF
LIMITED THE SNUBBER
CURRENTS
100Ω, 1W+683K
63Ω, 1/2W
100Ω, 1W+683K
62Ω, 1/2W
100Ω, 1W+103K
330Ω, 1/4W
100Ω, 1/W+223K
330Ω, 1/4W
100Ω, 1W+103K
330Ω, 1/4W
100Ω, 1W+103K
62Ω, 1/2W
BCR1AM-12L BCR1AM-12L
• CHECK the resistance of the T1 & T2
of the TRIAC. (∞Ω).
• CHECK the total parts without fail, in
case the TRIAC has a short circuit.
RESISTANCES OF
TOTAL PARTS
AC 250V
AC 250V
AC 250V
AC 250V
AC 250V
AC 250V
THE
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