GE Advantium SCA1000, Technical Service Manual

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Humidity Sensor Test
Note:
• An open or shorted humidity sensor will cause
fault code F4.
• Oven should be plugged in at least 5 minutes
before the test.
• Room temperature should not exceed 95° F.
• Be sure the exterior of the cooking container
and the interior of the oven are dry.
• No sensor cooking is available during the 5
minutes immediately after speedcook.
The humidity sensor can be tested from the
control panel area using the following diagnostic
procedure:
1. Remove control panel enough to gain access
to connector CN5 on main PCB.
2. Disconnect the humidity sensor connector
(CN5) from the main PCB.
3. Using an ohmmeter, set the scale to Rx1000
and confirm the following approximate
resistance readings:
a. BLK - RED = 6.2K ohms
b. RED - WHT = 3.1K ohms
c. BLK - WHT = 3.1K ohms
Voltage Compensation Test
A voltage compensation test should be conducted
any time the main PCB is changed. To perform a
voltage compensation test, do the following:
1. Measure and record the line voltage.
Note: No load is required during this test.
2. Select Speedcook, Biscuits, Refr, Large.
3. Press the Start key. Normal cook time for this
selection is 12 minutes. After 7 seconds,
voltage compensated time should be
displayed.
4. Compare your recorded line voltage and cook
time with the line voltage and cook time on the
chart. Your recorded time should be within 20
seconds of the times listed in the Voltage
Compensation Chart.
t r a h C n o i t a s n e p m o C e g a t l o V
e g a t l o V
e g n a h C e m i T
) s d n o c e S (
8 0 1 0 8 1 +
0 1 1 0 5 1 +
2 1 1 0 2 1 +
4 1 1 0 9 +
6 1 1 0 6 +
8 1 1 0 3 +
0 2 1 0
2 2 1 1 2 -
4 2 1 2 4 -
6 2 1 3 6 -
8 2 1 4 8 -
0 3 1 5 0 1 -
2 3 1 6 2 1 -