14
COMPONENT TESTING PROCEDURES
Illustration
Component
Testing
Results
Transformer, HV
Discharge Capacitor
Remove all wires from terminals.
Measure resistance from:
230 to COM ..........................................
Less than 1
208 to COM ..........................................
Less than 1
230 to Ground
Infinite
208 to Ground----------------------------------
Infinite
Terminal 5 to 6---------------------------------
Less than 1
Terminal 7 to 8---------------------------------
Less than 1
Terminal 4 to Ground-------------------------
Approximately 27
Main board
See Main Board page 5
Left interlock switch assembly
Disconnect wires to switch.
With door open measure resistance from:
Monitor
– Terminals Rd- Bk..............
Primary
– Terminals Bk - Brn ...........
With door closed measure resistance from:
Monitor
– Terminals RD - BK ...........
Primary
– Terminals BK - BN ...........
After verifying or replacing the
assembly, re-connect wires to switch
and check operation of monitor circuit
before operating the oven.
(Mechanical)
Indicates continuity
Infinite
Infinite
Indicates continuity
Right interlock switch
Disconnect wires to switch.
With door open measure resistance from:
Monitor
– Terminals RD- BK ............
Secondary
– Terminals GY -RD.......
With door closed measure resistance from:
Monitor
– Terminals RD - BK ...........
Secondary
– Terminals GY - RD......
After verifying or replacing the
assembly, re-connect wires to switch
and check operation of monitor circuit
before operating the oven.
assembly
(Mechanical)
Indicates continuity
Infinite
Infinite
Indicates continuity
Transformer, control
(1) BU to (5) BR ----------------------------- --
Approximately 40
or Line Voltage
(6) YL to (10) WH-------------------------------
Approximately 1
or 28 VAC
Fan, cooling
Disconnect connector from fan.
Measure voltage at incoming leads ...........
Approximately 24VDC
Fan, exhaust
Disconnect connector from fan.
Measure voltage at incoming leads .......
Approximately 24VDC
!
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor
before servicing, unless testing requires power.