6-1
DIAGNOSTICS & TROUBLESHOOTING
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
DIAGNOSTICS
Disconnect power and perform the following
checks:
A potential cause of a control not function-•
ing is corrosion on connections. Observe
connections and check for continuity with
an ohmmeter.
All tests/checks should be made with a VOM •
or DVM having a sensitivity of 20,000 ohms
per volt DC or greater.
Check all connections before replacing com-•
ponents, looking for broken or loose wires,
failed terminals, or wires not pressed into
connectors far enough. Damaged harness
must be entirely replaced. Do not re-work a
harness.
Resistance checks must be made with power •
cord unplugged from outlet, and with wiring
harness or connectors disconnected.
IMPORTANT
Electrostatic Discharge (ESD)
Sensitive Electronics
ESD problems are present everywhere.
ESD may damage or weaken the elec-
tronic control assembly. The new control
assembly may appear to work well after
repairisnished,butfailuremayoccurat
a later date due to ESD stress.
Use an anti-static wrist strap. Connect •
wrist strap to green ground connection
point or unpainted metal in the appli-
ance.
-OR-
Touchyourngerrepeatedlytoagreen
ground connection point or unpainted
metal in the appliance.
Before removing the part from its pack-•
age, touch the anti-static bag to a green
ground connection point or unpainted
metal in the appliance.
Avoid touching electronic parts or termi-•
nal contacts; handle electronic control
assembly by edges only.
W h e n r e p a c k ag i n g f a i l e d e l e c t r o n i c c o n -•
trol assembly in anti-static bag, observe
above instructions.
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