TurboChef HIGH H BATCH 2, Service Manual, Page: 51 / 82

DIAGNOSING
AN
ISSUE
33
NO
Troubleshooting:
No Display – Screen is Blank
YES
NO
Does the control beep when
a key is pressed?
Is wiring from the
control board to
display OK?
Is J3 connector
receiving 5 VDC?
(page 52)
NO
YES
YES
Replace the display.
(page 32)
NO
NO
YES
Is the power supply
output at 24 VDC?
NO
YES
YES
Verify 5 VDC is
present on J3 con-
nector. If not, replace
the control board
(page 39)
Is the control board
receiving correct VDC?
Check voltage on D6
Diode on striped end
(page 52 for schematic
of the control board)
Replace fuses.
(page 40)
Check wiring from
Power Supply to the
control board. Correct
wiring if necessary.
Replace the control
board. (page 39)
Correct wiring.
If ribbon cable is
damaged, replace
with P/N 103024.
Is the power supply
receiving power?
Replace power supply.
(page 39)