Control Voltage; Key Panel Test - GE ZEK957 Series Technical Service Manual

Control Voltage

Model JCKP15
TERMINALS VOLTAGE
120 VAC ALL THE TIME
L1A & B TO N
240 VOLTS when oven is
DLB TO BAKE
calling for heat (BAKE & BROIL
DLB TO BROIL
relay contacts closed)
OVL1-OVL2 120 VAC when light is off
AUX1 - N
120 VAC locking or unlocking
Model JCKP18
TERMINALS VOLTAGE
L1-N 120 VAC ALL THE TIME
N to COM, COM 0,C 120 VAC ALL THE TIME
240 VOLTS when oven is not
L1-1 & 2-BAKE 1
calling for heat (BAKE, CONV. ,
L1-1 & 2-BROIL1
& BROIL relay contacts open).
L1-1 & 2 CONV 1
120 VOLTS when light is on.
L1 to Con P101 Term, 1 & 3
120 VOLTS locking or unlocking
L1 TO MDL 1
120 VOLTS when oven door is
L1-to CON P101 Term 5 &
closed and Conv. Bake, Conv.
6 (See Conv. Fan Assy.)
Roast not operating.
Model JKP15
TERMINALS
VOLTAGE
120 VAC ALL THE TIME
L1A & B TO N
240 VOLTS when oven is not
L1A & B TO BAKE
calling for heat (BAKE & BROIL
L1A & B TO BROIL
relay contacts open)
OVL1-OVL2 120 VAC when light is off
120 VAC locking or unlocking
AUX1 - N
Models ZEK937 and JKP18
TERMINALS VOLTAGE
L1-N 120 VAC ALL THE TIME
N to COM 120 VAC ALL THE TIME
240 VOLTS when oven is not
L1-1 BAKE-1
calling for heat (BAKE, CONV. ,
L1-1 BROIL-1
& BROIL relay contacts open).
L1-1 CONV-1
120 VOLTS when light is on.
L1 to Con P101 Term, 1 & 3
120 VOLTS locking or unlocking
L1 TO MDL 1
120 VOLTS when oven door is
L1-to CON P101 Term 5 &
closed and Conv. Bake, Conv.
6 (See Conv. Fan Assy.)
Roast not operating.

Key Panel Test

The key panel is connected to the control by a
ribbon connector. The control will sound a tone
when any of the pads are depressed except for the
+/- pads.
To help isolate a problem to either the control or
key panel, depress each pad on the key panel
followed by the Clear / Off pad and observe the
following:
• Bake, Broil, Clean, Timer, Clock, Stop Time,
and Cook Time Modes - Audible tone plus
display showing mode of operation selected.
Model JKP27
TERMINALS VOLTAGE
L1A,& B -N
120 VAC ALL THE TIME
AUX1
120 VAC ALL THE TIME
L1A & B TO BAKE
240 VOLTS when oven is not
L1A & B TO BROIL
calling for heat (BAKE & BROIL
relay contacts open)
OVL2 - L1
120 VAC when light is on
AUX2 - N
120 VAC locking or unlocking
Models ZEK957, JKP56, and JKP45
TERMINALS VOLTAGE
L1-N 120 VAC ALL THE TIME
N to COM, COM 0,C 120 VAC ALL THE TIME
240 VOLTS when oven is not
L1-1 & 2-BAKE 1 & 2
L1-1 & 2-BROIL 1 & 2
& BROIL relay contacts open).
L1-1 & 2 CONV 1 & 2
120 VOLTS when light is on.
L1 to Con J6 Term, 1 & 3
120 VOLTS locking or unlocking
L1 TO MDL 1 & 2
120 VOLTS when oven door is
L1-to CON J6 Term 5 &
6 (See Conv. Fan Assy.)
Roast not operating.
Model JKP85
TERMINALS
VOLTAGE
120 VAC ALL THE TIME
L1 TO N
240 VOLTS when oven is not calling for
L1 TO BAKE
heat (BAKE & BROIL relay contacts open)
L1 TO BROIL
120 VAC when light is on
LAMP-L1
120 VAC Not locking or unlocking, door closed.
MOTOR 1-MOTOR 2
Model JCKS05
TERMINALS VOLTAGE
120 VAC ALL THE TIME
L1A & B TO N
240 VOLTS when oven is
DLB TO BAKE
calling for heat (BAKE & BROIL
DLB TO BROIL
relay contacts closed)
120 VAC when light is off
OV1 - OV2
Model JKS05
TERMINALS
VOLTAGE
L1A & B TO N 120 VAC ALL THE TIME
240 VOLTS when oven is not calling
L1A & B TO BAKE
for heat (BAKE & BROIL relay
L1A & B TO BROIL
contacts open)
120 VAC when light is off
OV1 - OV2
• Clear / Off - Audible tone and display shows
time of day.
• +/- Pads - No audible tone. Can only be used
after another function pad has been selected.
If some of the pads work and some don't, the
problem is probably with the key panel. To verify
that the key panel is the problem, check the
connector for proper insertion of the ribbon cable
and perform the Ohmmeter Test. If the ohmmeter
reads infinity W when depressing the pad, or
shows some resistance without depressing the
pad, the key panel is bad.
– 19 –
calling for heat (BAKE, CONV. ,
closed and Conv. Bake, Conv.