Norcold 121X series, Service Manual

Page: 87 / 100

S
ection
10
85
The multimeter test probe tips must be at least
1/2 inch long to contact the test points.
Checking Voltage to the Stepper Motor
Connection
AC voltage at the stepper motor connection
can be checked through test points N and M
1. Remove the ice bin and freezer shelf.
2. Detach the ice maker from the evaporator
plate. Do not to pull on the wire harness.
3. Rotate the ice maker so the module cover
faces toward the freezer door, then remove
the cover.
4. Lower the shut-off arm to the ON position
5. Make sure AC power is available to the ice
maker.

108 to 132 VAC: normal voltage to motor.

0 voltage: check voltage at AC outlet and
continuity of ice maker power cord.

108 to 132 volts AC through AC power cord:
Check ice maker wire harness BLACK wire
and WHITE wire for continuity.
5. Set the multimeter to ohmmeter function,
then insert one probe into point L and the
other into point H as Figure 10-14 illustrates.
The multimeter test probe tips must be at least
1/2 inch long to contact the test points.
Figure 10-15. —Measuring mold heater resistance.
6. Set the multimeter to AC voltage function,
then insert one probe into point N and the
other into point M as Figure 10-15 illustrates.
628135
D
O
N
O
T
R
OTATE
62
83
58
DISCONNECT POWER
TO MODULE
106 626649 IM
REMOVE
#S
W 2
01/13/03
185W–115V– 60 HZ
U R
MIN MAX RANGE HOLD H
Hz REL
mA
A
mV
V
V
OFF
!
!
A COM V mA m A
1000V MAX
400mA MAX
FUSED
10A MAX
FUSED
PEAK MIN MAX
m A
CAT II
4 1/2 DIGITS
1 Seconds
87 TRUE RMS MULTIMETER III
628
135
D
O
N
O
T
R
OTATE
62
83
58
DISCONNECT
POWER
TO
MODULE
106
626649 IM
REMOVE
#S
W
2
01/13/03
185W–115V– 60 HZ
U R
MIN MAX RANGE HOLD H
Hz REL
mA
A
mV
V
V
OFF
!
!
A COM V mA m A
1000V MAX
400mA MAX
FUSED 10A MAX
FUSED
PEAK MIN MAX
m A
CAT II
4 1/2 DIGITS
1 Seconds
87 TRUE RMS MULTIMETER III
V
V
Figure 10-16. —Measuring voltage at stepper
motor.

NOTE

NOTE