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12. SERVICE PROCEDURES
6 6 6 6 6
Continuity of fuse on P.C.B. Ass'y
• Check for continuity using a multimeter
as shown in Fig. 19.
NOTE
Method Used to Replace Fuse on PCB
Ass'y
1. Remove the PCB Ass'y from the electri-
cal component box.
2. Remove the fuse from PCB Ass'y using
pliers while heating the soldered leads
on the back side of the PCB Ass'y with
a soldering iron (30W or 60W). (Fig. 20)
3. For replacement, insert a fuse of the
same rating to the intended position and
solder it.
(Allow time to radiate heat during sol-
dering so that the fuse does not melt.)
CAUTION
4)
Thermistor Characteristic Curve
1
Room temp. sensor
(KTEC-35)
10
9
8
7
6
5
4
3
2
1
50
59
68
Temperature ( F)
When replacing the
fuse, be sure not to
break down the varis-
tor.
77
86
95
104
1044_M_I
– 65 –
Soldering iron
Pliers
1
Coil sensor
(PBC-41E)
40
35
30
25
20
15
10
5
0
–4
5
14
23
Temperature ( F)
Fuse
1042_X_S
Fig. 19
PCB Ass'y
Fuse
Varistor
1043_X_S
Fig. 20
32
41
50
59
68
1045_M_I
SM830078
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