Norcold 121X series, Service Manual

Page: 16 / 100

14
S
ection
3
11
If possible make repairs. If repairs are not suc -
cessful or cannot be made, call Norcold Technical
Support 1-800-444-7210 for assistance.
From page 13
NO
10
Continuity through the Wire Harness
White/Red wire ?
9
Continuity through the Wire Harness
Blue wire ?
1. Plug the wire harness back into the
Power Board P1 connector.
2. Connect volt meter + probe to the
White/Red and the – probe to the White/
Violet wire . See Figure 3-8, page 17.
3. Press and release the OFF/ON switch
button to turn ON refrigerator.
12
NO
YES
NO
YES
NO
YES
YES
Controls okay
1. Unplug the Wire Harness at the P1 Power Board
connector
2. Check the Wire Harness
Blue wire and White/
Red for continuity. See Figure 3-7, page 17.
Refrigerator ON?
Replace the Optical Control Display Assembly.
Voltage present after releasing
switch button?
MIN MAX RANGE HOLD H
Hz REL
mA
A
mV
V
V
OFF
!
!
A COM V mA µ A
1000V MAX
400mA MAX
FUSED
10A MAX
FUSED
PEAK MIN MAX
µ A
CAT II
4 1/2 DIGITS
1 Seconds
TRUE RMS MULTIMETER
V
Figure 3-1. —Checking continuity of power board F1 fuse.
Installed in power board
Removed from power board