Turbo Chef Technologies Troubleshooting F3 Magnetron Current Low Error in TurboChef Ovens

Troubleshooting:

F3: MAG CURR (Magnetron Current Low)

Is the K6 mechanical

Is control board

relay in good working

U.S.

Intl.

Is the oven U.S. or International?

detecting 10A or

order?

more current? Test

for 24 VDC on pin

YES

NO

2 of J7 connector

Replace the

(page 51).

control board.

Check the condition of the

Replace K6 relay

F3 and F4 fuses (pages 42,

See page A-8.

(see pages A-5

A-5 through A-6). Are they

YES

through A-6).

NO

12-amps?

YES

NO

Replace the F3

Is amperage present at the

NO

YES

and/or F4 fuse (see

current transformer even

pages A-5 through

if the control board is not

Are the F3 and F4 fuses

A-6) and verify the

detecting it?

NO

functioning properly?

operation of the

interlock switches

YES

(page 26).

41

Run test cook cycles to see if fault repeats (page 10). If not, clear faults.

YES

Test the high-voltage transformers (page 30). Are the high voltage transformers functioning properly?

Test the high-voltage diodes (page 30). Are the diodes

functioning properly?

Did fault repeat?

Replace the capacitor(s). See page A-7 through A-8.

NO

YES

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
				YES
	transformers(s). See
	page A-7 through A-8.
		Test the capacitors (page 29).
		Are the capacitors
NO
		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.
YES
	See page A-12				See page A-8.
	through A-13.

TROUBLESHOOTING