Maytag 111990" Automatic Dryers Service Manual page 17

C. Remove BK wire from buzzer.
D. Attach motor test cord to the BK
wire (removed from buzzer) and to
the O-BK wire (removed from relay).
E. Plug motor test cord into outlet
(coil in relay should now be ener-
gized).
F. Check for continuity from ter-
minal RD on relay to terminal O-BK
on relay. No continuity, replace
relay.
CAUTION SHOULD BE EXERCISED
WHENEVER WORKING AROUND
LIVE VOLTAGE.
3. Check continuity across contacts
W-BK to RD in relay. When closed,
this set of contacts is used to ener-
gize the timer motor by bringing the
neutral side of the power supply
through the relay, to the timer
motor.
A. Disconnect power supply.
B. Remove wires W-BK, O-BK and
RD from relay.
C. Remove BK wire from buzzer.
D. Attach motor test cord to the BK
wire (removed from buzzer) and to
the O-BK wire (removed from relay).
E. Plug motor test cord into outlet
(coil in relay should now be ener-
gized).
\"-
CAUTION
F. Check for continuity from ter-
minal RD on relay to terminal W-BK
on relay. No continuity, replace
relay.
4. Replace electronic control (printed
circuit board).
If neon bulb does not "FIRE":
1. Check capacitor.
A. Disconnect power supply.
B. Remove electronic control
(printed circuit board).
C. Set ohmmeter to an ohm scale,
such as Rx100.
D. Place meter leads into openings
in the edgeboard connector where
capacitor leads terminate. First,
make sure you have discharged the
capacitor by shorting the leads. Use
a piece of insulated wire with the
ends stripped.
E. Needle should deflect to one side
and then slowly drop back to zero.
F. Failure to deflect the needle
would indicate an open capacitor.
Failure of the needle to drop back
would indicate a shorted capacitor.
Replace edgeboard connector
assembly.
2. Replace electronic control (printed
circuit board).
Always disconnect power supply before making any continuity checks or resist-
ance readings.
ED/GD401 1090 SECTION 2. ELECTRICAL - MECHANICAL TROUBLESHOOTING
2-5