MELODY SERVICE MANUAL
PAGE 4
2006
SUNRISE MEDICAL
Section 1
1.6 Check Battery Wire Harness
Check that the battery wire harness has the polarity cor-
rect. Set the meter to dc volts and measure the connector
with the red lead on the positive terminal and the black lead
on the negative terminal as shown in (figure 1.6.1) If both
the battery wire harness have full voltage and correct polar-
ity, then proceed to circuit breaker test. If the voltage is ab-
sent proceed to battery fuse test. If the polarity is reversed
correct battery wiring.
A1.6.1
If polarity is reversed correct battery wiring.
Check that the battery fuse is in good condition. Inspect
the fuse to see if the fuse is blown. Set the meter to ohms
and measure the resistance across the fuse. Measure the
negative terminal of the battery box and the positive termi-
nal of the battery harness. Measure the positive terminal
of the battery box and the negative terminal of the battery
harness (figure A1.7.1). If the meter reads more than one
ohm, change the harness, or else proceed to the next step.
1.7 Battery Fuse
A1.7.1
If the meter reads more than one ohm, change the Battery harness.
1.8 Circuit Breaker Test
To check the circuit breaker set the meter to ohms and
measure the resistance across the circuit breaker as shown
in (figure A1.8.1). If the meter reads more than 1 ohm,
then change the circuit breaker, otherwise proceed to next
step.
A1.8.1
If the meter reads more than 1 ohm, then change the circuit breaker.
If the above steps did not correct the problem, change the
main harness.
1.9 Main Harness
A1.7.2
Troubleshooting: No Power (cont.)
