– 28 –
Disconnect
Disconnect
Disassembly
To remove the Power Supply Board:
1. Remove the Outer Cover. (See
Outer Cover
.)
2. Disconnect the 2 wire harnesses from the power
board.
3. Remove the Phillips-head screw and ground
wire from the oven frame.
4. Remove the 2 Phillips-head screws that attach
the power board to the Air Tunnel Inlet.
Relay Board
RY7
CN16
CN6
CN5
RY9
RY11
RY12
RY14
• Location
(See
Control Boards and Panel
Connections
.)
• Used for load switching, but also contains
voltage compensation circuits and the Buzzer.
• To energize relays that operate any of the
heat sources, the Smart Board has to supply
a 12 VDC relay operating voltage (CN01 pin
2), a 5 VDC relay enable voltage (CN01 pin 28),
and another 5 VDC "turn on" voltage. (See
Relay
Chart
on the next page.)
• To energize relays that operate loads that are
not heat sources, all of the above is required
except for the "relay enable" voltage.
• Buzzer is activated by supplying DC Ground to
CN02-29.
• DC Ground is on CN01 pins 4, 5, and 6.
CN01
(
Continued next page
)
Note:
Where applicable, board callout arrows
identify pin #1.
