Magic Chef CER3725AGW, Сервисная инструкция

Страница: 12 / 33

Component Testing Procedures
!
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to range before servicing, unless
testing requires power.
12 16026839
© 2006 Maytag Services
Illustration Component Test Procedure Results
Oven light socket Remove one wire from receptacle
and test resistance of terminals.............
Measure voltage at oven light ...............
Indicates continuity with bulb
inserted.
220 - 240 VAC, see wiring
diagram for terminal identification.
If voltage is not present at oven
light, check wiring or light
switches.
L2
L1
H2
P
H1
1
2
3
4
5
Push-to-turn infinite switch Connect Volt-ohms meter to
H1 and H2.
Measure the following for voltages at
LO, MED, HI:
H1 to H2 ........................................
Approximate
Time On Time Off
LO 5% 95%
MED (4-5) 35% 65%
HI 100% 0%
220 - 240 VAC. If not, replace
switch.
Step-down transformer
WHITE
RED
BLACK
STEP-DOWN TRANSFORMER SCHEMATIC
220/240 VOLT
PRIMARY
2
110/220 VOLT
SECONDARY
3
1
Measure voltage:
Primary
terminals...........................
Secondary terminals ......................
220 - 240 volts
110 - 120 volts
Bake element Measure voltage at bake element .........
Disconnect wire leads to element and
measure resistance of terminals ........... 220 - 240 VAC, see wiring
diagram for terminal identification.
If voltage is not present at bake
element, check wiring.
Approximately 21.7
Ω
.
Broil element Measure voltage at broil element ..........
Disconnect wire leads to element and
measure resistance of terminals ........... 220 - 240 VAC, see wiring
diagram for terminal identification.
If voltage is not present at broil
element, check wiring.
Approximately 18.7
Ω
.
Ribbon element
1200W Measure voltage at coil element............
Disconnect wire leads to element and
measure resistance of terminals ........... 220 - 240 VAC, see wiring
diagram for terminal identification.
If voltage is not present at
element, check wiring.
Approximately 44 to 49
Ω
.
Ribbon element
2500W Measure voltage at coil element............
Disconnect wire leads to element and
measure resistance of terminals ........... 220 - 240 VAC, see wiring
diagram for terminal identification.
If voltage is not present at
element, check wiring.
Approximately 21 to 24
Ω
.
Oven indicator light
and
Surface indicator light Measure voltage at indicator light.......... If voltage is present and light
does not work, replace light.
If voltage is not present at
indicator light, check wiring.
Rocker switch Measure continuity of switch
positions:
Closed ...............................................
Open .................................................
Continuity
Infinite
Oven temperature sensor Measure resistance............................... Approximately 1050 to 1100
Ω
at
room temperature 80° F.