© 20
10
Viking Preferred Service
45
Service Diagnostics and Procedures–Disassembly
High Voltage Board
A control board is used to operate functions of the
unit. Once an input is received from the low voltage
board, the high voltage board sends an output to
activate the components.
1.
To access the high voltage board, remove the
upper air grill assembly, and control panel (
see
Air Grill and Control Panel Removal sections)
.
2.
Remove screws securing low voltage board,
disconnect wiring and remove.
High voltage board is now accessible. To check
high voltage board,
refer to chart on page 46
.
3. Reverse procedure to reinstall.
Low Voltage Board
The unit uses a control board in conjunction with
an overlay switch to operate functions of the
refrigerator/freezer. Input comes to the low voltage
board via the ribbon cable attached to the overlay
switch.
1.
To access the low voltage board, remove the
upper air grill assembly, control panel (
see Air
Grill and Control Panel Removal sections)
.
2.
Remove screws securing low voltage board
disconnect wiring and remove.
3. Reverse procedure to reinstall.
High Voltage Board
WARNING
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power to unit using power
switch before servicing. Wires removed during disassembly must be replaced on proper terminals to insure
correct earth ground and polarization. After servicing, reconnect power using power switch.
Low Voltage Board