GE JKP18 Series, Technical Service Manual

Page: 21 / 70

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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.
Control Voltage
• 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.
TERMINALS
L1A & B TO N
VOLTAGE
120 VAC ALL THE TIME
240 VOLTS when oven is
calling for heat (BAKE & BROIL
relay contacts closed)
DLB TO BAKE
DLB TO BROIL
120 VAC when light is off
120 VAC locking or unlocking
AUX1 - N
OVL1-OVL2
Model JCKP15
Model JCKP18
TERMINALS
L1-N
N to COM, COM 0,C
L1-1 & 2-BAKE 1
L1-1 & 2-BROIL1
L1-1 & 2 CONV 1
L1 to Con P101 Term, 1 & 3
L1 TO MDL 1
L1-to CON P101 Term 5 &
6 (See Conv. Fan Assy.)
VOLTAGE
120 VAC ALL THE TIME
120 VAC ALL THE TIME
240 VOLTS when oven is not
calling for heat (BAKE, CONV. ,
& BROIL relay contacts open).
120 VOLTS when light is on.
120 VOLTS locking or unlocking
120 VOLTS when oven door is
closed and Conv. Bake, Conv.
Roast not operating.
Model JCKS05
TERMINALS
L1A & B TO N
DLB TO BAKE
DLB TO BROIL
VOLTAGE
120 VAC ALL THE TIME
240 VOLTS when oven is
calling for heat (BAKE & BROIL
relay contacts closed)
120 VAC when light is off
OV1 - OV2
Model JKP15
TERMINALS
L1A & B TO N
L1A & B TO BAKE
L1A & B TO BROIL
OVL1-OVL2
AUX1 - N
VOLTAGE
120 VAC ALL THE TIME
240 VOLTS when oven is not
calling for heat (BAKE & BROIL
relay contacts open)
120 VAC when light is off
120 VAC locking or unlocking
Models ZEK937 and JKP18
TERMINALS
L1-N
N to COM
L1-1 BAKE-1
L1-1 BROIL-1
L1-1 CONV-1
L1 to Con P101 Term, 1 & 3
L1 TO MDL 1
L1-to CON P101 Term 5 &
6 (See Conv. Fan Assy.)
VOLTAGE
120 VAC ALL THE TIME
120 VAC ALL THE TIME
240 VOLTS when oven is not
calling for heat (BAKE, CONV. ,
& BROIL relay contacts open).
120 VOLTS when light is on.
120 VOLTS locking or unlocking
120 VOLTS when oven door is
closed and Conv. Bake, Conv.
Roast not operating.
Model JKP27
L1A,& B -N
AUX1
L1A & B TO BAKE
L1A & B TO BROIL
OVL2 - L1
AUX2 - N
TERMINALS VOLTAGE
120 VAC ALL THE TIME
120 VAC ALL THE TIME
240 VOLTS when oven is not
calling for heat (BAKE & BROIL
relay contacts open)
120 VAC when light is on
120 VAC locking or unlocking
Models ZEK957, JKP56, and JKP45
TERMINALS
L1-N
N to COM, COM 0,C
L1-1 & 2-BAKE 1 & 2
L1-1 & 2-BROIL 1 & 2
L1-1 & 2 CONV 1 & 2
L1 to Con J6 Term, 1 & 3
L1 TO MDL 1 & 2
L1-to CON J6 Term 5 &
6 (See Conv. Fan Assy.)
VOLTAGE
120 VAC ALL THE TIME
120 VAC ALL THE TIME
240 VOLTS when oven is not
calling for heat (BAKE, CONV. ,
& BROIL relay contacts open).
120 VOLTS when light is on.
120 VOLTS locking or unlocking
120 VOLTS when oven door is
closed and Conv. Bake, Conv.
Roast not operating.
Model JKP85
TERMINALS
L1 TO N
VOLTAGE
120 VAC ALL THE TIME
240 VOLTS when oven is not calling for
heat (BAKE & BROIL relay contacts open) L1 TO BAKE
L1 TO BROIL
120 VAC when light is on
120 VAC Not locking or unlocking, door closed.
LAMP-L1
MOTOR 1-MOTOR 2
Model JKS05
TERMINALS
L1A & B TO N
L1A & B TO BAKE
L1A & B TO BROIL
VOLTAGE
120 VAC ALL THE TIME
240 VOLTS when oven is not calling
for heat (BAKE & BROIL relay
contacts open)
120 VAC when light is off
OV1 - OV2