Maytag Bravos MED6300TQ Technical Education page 95

6. In a similar way, check the continuity be-
tween the L1 terminal of the plug and P9-2
(black wire) on the control board. See Fig-
ure 16.
• If there is continuity, go to step 8.
• If there is no continuity, check the con-
tinuity of the power cord in a similar
way to that illustrated in Figure 5, but
for power cord's L1 wire.
• If an open circuit is found, replace the
power cord. Otherwise, go to step 7.
7. Replace the main harness.
8. Visually check that the P5 connector is
inserted all the way into the machine
control electronics.
9. Visually check that the user interface as-
sembly is properly inserted into the front
console.
10. If both visual checks pass, replace the
user interface assembly.
11. Plug in dryer or reconnect power.
12. Perform the Console Buttons and Indica-
tors Diagnostic test to verify repair.
13. If indicators still do not light, the machine
control electronics has failed:
• Unplug dryer or disconnect power.
• Replace the machine control electron-
ics.
• Plug in dryer or reconnect power.
• Perform the Console Buttons and Indi-
cators Diagnostic test to verify repair.
TEST #2 Machine Control Power Check
This test is used to determine if power is pres-
ent at the machine control electronics.
NOTE: The drum light is controlled by the ma-
chine control on all models.
1. Plug in dryer or reconnect power.
2. Open the door.
• If the drum light illuminates, then power
is present at the machine control. Go
to TEST #6.
• If the drum light fails to illuminate, do
not assume the machine control elec-
tronics needs replacement. Several
conditions may cause the drum light
not to illuminate, including a bad bulb.
If the drum light does not illuminate, go
to TEST #1.
TEST #3 Drive Motor Circuit
This test will check the wiring to the motor and
the motor itself. The following items are part
of this motor system:
• Harness/connection
• Belt/belt switch
• Drive motor
• Centrifugal switch
• Door switch
• Machine control electronics
1. Unplug dryer or disconnect power.
2. Access the machine control electron-
ics and measure the resistance across
P8-4 and P9-1. See Accessing & Remov-
ing the Electronic Assemblies.
• If resistance across P8-4 and P9-1 is
in the range of 1 to 6 ohms, replace the
machine control electronics.
• Otherwise, go to step 3.
3. Check the wiring and components in the
path between these measurement points
by referring to the appropriate wiring dia-
gram and strip circuit in Section 7.
4. Check the belt switch and drive motor.
Access the belt switch and drive motor
by removing the front panel/drum assem-
bly. See Removing the Front Panel/Drum
Assembly. Slowly remove the drum belt
from the spring-loaded belt switch ten-
sion pulley, gently letting the belt pulley
down. See Figure 6 on the next page.
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