Maytag 111990" Automatic Dryers Service Manual page 21

C. Connect power supply.
D. If motor runs, the switch in the
relay has failed, replace relay.
3. Check drive motor. Refer to Elec-
trical Test Equipment section for
drive motor test.
, - CAUTION - - - - - - - - - - ,
I
Always disconnect power supply
before making continuity or
resistance checks.
4. Make continuity checks on thermal
fuse and cut-off. No continuity,
replace.
5. Make continuity check on door
switch with door closed. No conti-
nuity, replace.
CONTROL CIRCUIT
No heat (electric dryer):
1. Check for continuity or resistance
across the coil on the Heater Relay.
A. Disconnect power supply.
B. Place meter leads across YL and
W-BU.
C. Should see about 310 ohms if
reading resistance. No continuity,
replace relay.
\ CAUTION
CAUTION:
Use extreme care when checking
voltage.
2. Check 24 DC voltage to relay.
A. Place meter leads across wire
connectors YL and W-BU.
NOTE: Checking DC voltage, set
and use meter accordingly.
B. Make voltage check. No voltage,
suspect microprocessor board,
transformer, edgeboard connector
AA or power supply.
CONTROLLED CIRCUIT
1. Check for continuity across switch
contacts in Heater Relay.
A. Disconnect power supply.
B. Remove wire connectors BK and
BK from relay.
C. Place meter leads across termi-
nals BK and BK on relay.
D. Connect power supply.
CAUTION SHOULD BE EXERCISED
WHEN WORKING AROUND LIVE
VOLTAGE.
E. Make continuity check. No conti-
nuity, replace relay.
Always disconnect power supply before making any continuity checks or
resistance readings.
E DIG D401 1090
SECTION 2. ELECTRICAL - MECHANICAL TROUBLESHOOTING
2-9