Daewoo KOR-616T2S Service Manual page 41

2) Display prolems
NO. CAUSE
1 Poor contact between
P.C.B and display
filament.
2 The Display has some
troubles in its segment
3 Loss of vacuum in the
display.
Display trouble shooting data
TROUBLE
TIME DEFROST, g do not come on
WEIGHT DEFROST, WATT do not come on.
QUANTITY does not come on
STAGE 2,AUTO COOK do not come on.
STAGE 1, LOCK do not come on.
SEGMENT, "a" does not come on from G1 to G5.
SEGMENT, "b" does not come on from G1 to G5.
SEGMENT, "c" does not come on from G1 to G5.
SEGMENT, "d" does not come on from G1 to G5.
SEGMENT, "e" does not come on from G1 to G5.
SEGMENT, "f" does not come on from G1 to G5.
SEGMENT, "g" does not come on from G1 to G5.
DEFROST, QUANTITY, STAGE2, STAGE1 do not come on UPPER BAR l,5
LOCK, AUTO COOK, WATT, g do not come on
4) When there is not microwave oscillation.
(1) When pressing " START " button, oven lamp does not turn on.
Fan motor and turntable motor do not rotate, but cook indicator in display comes on.
* Cause : RELAY "2"does not operate.
MEASUREMENT
1. Check the voltage of PIN
1 & PIN 25.
Refer to "The display
trouble shooting data"
Stop
1 2 Quantity Weight
Lock Auto cook Watt
B
RY2
D9
-24V
RESULT
2.6 VAC
White
Defrost
Time
spot is generated on
the display
g
DISPLAY NAME & PIN NO. MICOM OUTPUT IN PIN NO.
GRID 1 (G1), 21
GRID 2 (G2), 17
GRID 3 (G3), 14
GRID 4 (G4), 20
GRID 5 (G5), 4,7
SEGMENT d, 19
SEGMENT e, 18
SEGMENT f, 16
SEGMENT a, 23
SEGMENT b, 22
SEGMENT c, 20
SEGMENT g, 15
LOWER BAR h,i,j,k,6,8,9,11
Q12
40
REMEDY
Fix the Pin 1 &
25 on the
P.C.B.
Replace P.C.B.
assembly.
Replace P.C.B
assembly.
10
6
3
2
1
8
7
5
12
11
9
4
63
62
A
MICOM
37