procedure(s) required to correct them. These are often
produced in table form.
Most trouble-shooting tables are arranged in
columns that list the trouble, the probable cause(s), and
the remedy(ies) (table AII-1). Once the trouble is
identified, you should refer to the table for the probable
cause and then make necessary repairs or adjustments
to correct the malfunction.
Another type of trouble-shooting table is the logic
flow diagram. In a logic flow diagram, you simply
"enter" the diagram and follow the arrows to various
blocks or segments and perform the functions indicated
or move on to the next segment in a prearranged, logical
manner. A logic flow diagram is usually accompanied
by other types of diagrams and instructions.
ELECTRICAL DIAGRAMS
The majority of imaging equipment is operated by
electricity. To troubleshoot and perform maintenance
on this equipment adequately, you must have a basic
knowledge of electricity and be able to read electrical
diagrams. You should spend a few moments studying
Table AII-1.—Trouble-Shooting Table for Electric Ranges
TROUBLE
Range does not heat.
No heat at one surface burner.
Surface burner too hot.
PROBABLE CAUSE(S)
REMEDY(IES)
No voltage at outlet.
Correct voltage.
Blown fuse.
Replace fuse.
Open breaker.
Reset breaker.
Broken wire in power cord.
Check continuity of cord.
Faulty wall outlet.
Check for voltage at outlet.
Faulty prongs on male plug.
Replace if necessary.
Faulty slots in wall outlet.
Replace if necessary.
Loose terminal connections at
Clean and tighten connections.
burner unit.
Corroded contacts in control switch.
Clean contacts with sandpaper.
A burned-out element.
Replace element.
Open in burner circuit.
Replace wires if necessary.
Incorrect or reverse connections.
Switch wires as required.
No heat in oven.
Element connections loose and
corroded.
Clean and tighten connections.
Oven too cool.
Oven too hot.
Appliances fail to heat when
plugged into appliance.
Uneven baking.
Appliances fail to heat when
plugged into appliance outlets.
Burned-out element or elements.
Replace elements.
Inoperative oven control.
Adjust or replace control.
Inoperative oven control.
Adjust and replace control.
Range tilted.
Level range.
Oven racks not on proper supports.
Place racks on proper supports.
Blown fuse.
Replace fuse.
Loose and corroded circuit connections. Clean and tighten connections.
Broken circuit wires.
Faulty outlet.
Replace wires.
Replace if necessary.
AII-2
