New Holland CX720 Repair Manual page 1324

DO NOT use a self-powered test light for any of these tests. Use of a self-powered light can cause damage
to components in this system. M979
Before performing any of the electrical tests, be sure all operating controls are in neutral or park lock position.
This will eliminate accidental movement of the machine or start-up of power driven equipment. M980
Problem
LH and RH NASO Flashing
Lamps do not operate.
LH and RH Header
Flashing Lamps do not
operate.
LH and RH Front Hazard
Lamps (Hazard Bulbs) do
not operate.
Rear Beacon Light does
not operate.
LH and RH Front Beacons
do not operate.
LH Side Work Light does
not operate.
DISTRIBUTION SYSTEMS - LIGHTING SYSTEM
CAUTION
CAUTION
Possible Cause
Bulbs
Flasher Module
Hazard Switch
Bulbs
Flasher Module
Hazard Switch
Bulbs
Flasher Module
Hazard Switch
Bulbs
Beacon Light Relay
Beacon Light Switch
Bulbs
Beacon Light Relay
Beacon Light Switch
Bulb
C - LH NASO Flashing Lamp TestTurn/
hazard light Electrical light - Testing
(A.40.A.13.85 - G.40.A.20).
B - Flasher Module TestTurn/hazard light
Flasher unit - Testing (A.40.A.13.86 -
G.40.A.20).
A - Hazard Switch TestTurn/hazard light
Hazard switch - Testing (A.40.A.13.90 -
G.40.A.20).
E - LH Header Flashing Lamp TestTurn/
hazard light Electrical light - Testing
(A.40.A.13.85 - G.40.A.20).
B - Flasher Module TestTurn/hazard light
Flasher unit - Testing (A.40.A.13.86 -
G.40.A.20).
A - Hazard Switch TestTurn/hazard light
Hazard switch - Testing (A.40.A.13.90 -
G.40.A.20).
G - LH Front Hazard Lamp Test (Hazard
Bulb)Turn/hazard light Electrical light -
Testing (A.40.A.13.85 - G.40.A.20).
B - Flasher Module TestTurn/hazard light
Flasher unit - Testing (A.40.A.13.86 -
G.40.A.20).
A - Hazard Switch TestTurn/hazard light
Hazard switch - Testing (A.40.A.13.90 -
G.40.A.20).
DD - Rear Beacon TestBeacon Electrical
light - Testing (A.40.A.15.85 - G.40.A.20).
CC - Beacon Light Relay TestBeacon Re-
lay - Testing (A.40.A.15.82 - G.40.A.20).
GGG - Beacon Light Switch TestBeacon
Switch
G.40.A.20).
EE - LH Front Beacon TestBeacon Elec-
trical light - Testing (A.40.A.15.85 -
G.40.A.20).
CC - Beacon Light Relay TestBeacon Re-
lay - Testing (A.40.A.15.82 - G.40.A.20).
GGG - Beacon Light Switch TestBeacon
Switch
G.40.A.20).
LL - LH Side Work Light TestSide
work light Electrical light - Testing
(A.40.A.18.85 - G.40.A.20).
2 4/7/2006
A.40.A / 8
Correction
- Testing (A.40.A.15.83
- Testing (A.40.A.15.83
-
-