Vulcan-Hart 126172, Service Manual

Page: 10 / 68

ELECTRIC COMBI OVEN - REMOVAL AND REPLACEMENT OF PARTS
Page 10 of 68
PROGRAMABLE OVEN
CONTROL
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
CAUTION: Certain components in this system
are subject to damage by electrostatic discharge
during field repairs. A field service ground kit is
available to prevent damage. The field service
grounding kit must be used anytime the control
board is handled.
1. Remove the right side panel as outlined under
“COVERS AND PANELS”.
2. Disconnect the ribbon cable, connectors and
ground leads from the oven control board.
3. Remove the cover from the oven control by
removing the mounting nuts at the top and
bottom.
4. Remove the hex nuts securing the CPU board
to the display/keypad board.
5. Pull outwards on the CPU board and lift it off
from the display/keypad board pin connections.
NOTE: When installing the control board onto the
keypad board, make sure that the pins on the
keypad board are aligned with the plug on the
control board.