GE Monogram ZV30RS, Technical Service Manual, Page: 18 / 28

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Surface Lights
Yes
No
!
Is the circuit breaker open or fuse
blown?
Reset the circuit
breaker or replace the
fuse.
Replace the faulty
lamp socket.
!
Does the lamp bulb have continuity?
Yes
No
Replace the lamp bulb.
One or both
of the
surface
lights do
not work.
No
Repair faulty wiring.
!
W ith the lamp switch set to OFF, is 120 volts present between pin
(e) on the lamp switch and pin (6) on the autotransformer?
!
Is continuity present between pin (5) on the lamp switch and pin (1) on the autotransformer?
!
Is continuity present between pin (4) on the lamp switch and pin (6) on the autotransformer?
!
Is continuity present between pin (3) on the lamp switch and pin (5) on the autotransformer?
!
Is continuity present between pin (2) on the lamp switch and pin (4) on the autotransformer?
!
Is continuity present between pin (1) on the lamp switch and pin (3) on the autotransformer?
Yes
Isolate the lamp switch.
!
Is continuity present between pin (1) and pin (2) on the autotransformer?
!
Is the resistence between pin (1) and pin (3) on the autotransformer approximately 3.2 ohms?
!
Is the resistence between pin (1) and pin (4) on the autotransformer approximately 3.9 ohms?
!
Is the resistence between pin (1) and pin (5) on the autotransformer approximately 4.4 ohms?
!
Is the resistence between pin (1) and pin (6) on the autotransformer approximately 5.0 ohms?
No
Repair faulty wiring.
Yes
No
Replace the
autotransformer.
!
Is continuity present between lamp switch pin (a) and terminal (L) on both lamp sockets?
!
Is continuity present between autotransformer pin (2) and terminal (N) on both lamp sockets?
No
Repair faulty wiring.
Yes
Yes
No
Replace the
lamp switch.
Isolate the lamp switch.
!
W ith the lamp switch set to (1), is continuity present between pin (a) and pin (1) on the lamp switch?
!
W ith the lamp switch set to (2), is continuity present between pin (a) and pin (2) on the lamp switch?
!
W ith the lamp switch set to (3), is continuity present between pin (a) and pin (3) on the lamp switch?
!
W ith the lamp switch set to (HI), is continuity present between pin (a) and pin (4) on the lamp switch?
!
W ith the lamp switch set to (1), is continuity present between pin (e) and pin (5) on the lamp switch??
!
W ith the lamp switch set to (2), is continuity present between pin (e) and pin (5) on the lamp switch?
!
W ith the lamp switch set to (3), is continuity present between pin (e) and pin (5) on the lamp switch?
!
W ith the lamp switch set to (HI), is continuity present between pin (e) and pin (5) on the lamp switch?
Yes