TurboChef i5 Service Manual page 58

Is control board
detecting 10A or
more current? Test
for 24 VDC on pin
2 of J7 connector
(page 51).
YES NO
Is amperage present at the
current transformer even
if the control board is not
detecting it?
Run test cook
cycles to see if fault
repeats (page 10).
If not, clear faults.
Did fault repeat?
Replace the
capacitor(s).
See page A-7
through A-8.
Troubleshooting:
F3: MAG CURR (Magnetron Current Low)
Intl.
Is the oven U.S. or International?
Replace the
control board.
See page A-8.
YES
NO
Are the F3 and F4 fuses
functioning properly?
Test the high-voltage
transformers (page 30). Are the
YES
high voltage transformers
functioning properly?
NO
Replace the HV
transformers(s).
See page A-7
through A-8.
Test the filament transformers
(page 30). Are the filament trans-
formers functioning properly?
NO
Replace the filament
transformers(s). See
page A-7 through A-8.
Test the capacitors (page 29).
Are the capacitors
NO
functioning properly?
Check the condition of the
F3 and F4 fuses (pages 42,
A-5 through A-6). Are they
12-amps?
YES
YES
YES
YES
YES
Is the K6 mechanical
relay in good working
U.S.
order?
YES
NO
Replace K6 relay
(see pages A-5
through A-6).
Replace the F3
NO
and/or F4 fuse (see
pages A-5 through
A-6) and verify the
NO
operation of the
interlock switches
(page 26).
Test the high-voltage diodes
(page 30). Are the diodes
functioning properly?
NO
Replace the
YES
diode(s). See page
A-7 through A-8.
Test the magnetron for an
open/shorted filament (page
32). Are the filaments
functioning properly?
NO YES
Replace the
Replace the
magnetron(s).
control board.
See page A-12
See page A-8.
through A-13.
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