Jenn-Air JMC2427IM Fiche Technique page 4

FOR SERVICE TECHNICIAN'S USE ONLY
IMPORTANT: Before powering microwave magnetron, be sure that a load,
such as a microwave-safe cup of water, is present in the microwave oven
cavity.
Unplug oven or disconnect power before performing the following checks:
A potential cause of a control not functioning is corrosion on connections.
■
Observe connections and check for continuity with an ohmmeter.
All tests/checks should be made with a VOM or DVM having a sensitivity
■
of 20,000 Ω per volt DC or greater.
Check all connections before replacing components, looking for broken
■
or loose wires, failed terminals, or wires not pressed into connectors far
enough. Damaged harness must be entirely replaced. Do not rework a
harness.
Resistance checks must be made with power cord unplugged from
■
outlet, and with wiring harness or connectors disconnected.
IMPORTANT: Do not replace the control if there is no evidence of any failure.
Diagnostics
To Enter Diagnostics Mode:
Before proceeding with any corrective action, perform the following steps to
enter the Diagnostics Mode.
1.
Enter Diagnostics Mode by pressing KITCHEN TIMER>TOOLS>KITCHEN
TIMER (repeat two more times).
NOTE: You do not need to wait for any audible or visual feedback from the
control between keypad presses.
2.
If control does not enter Diagnostics, continue repeating the keypad
sequence from Step 1. All the keypads will light up when the control enters
Diagnostics.
3.
From the Diagnostic Menu, scroll to the desired selection using the touch
screen.
Error Diagnostics: View and clear the failure history.
Component Activation: Manually activate each relay.
Sensors & Switches: View the traditional oven cavity temperatures and
door/latch switch status.
System Information: View the model number, serial number, and
software versions.
Exit Diagnostics
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