Component Testing Procedures
!
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitor
before servicing, unless testing requires power.
©2006 Maytag Services 16023463 19
H.V. Board
Pin 1
Pin 1
Pin 1
Pin 1
Pin 1
Pin 1
Pin 1
Pin 1
Pin 50
Pin 28
J1
J2
J5
J8
J6
J7
J3
J4
E4 E5
E7 E6
E1
E2
E3
In straight convection mode, both elements operate simultaneously.
In combination mode, the rear element will operate simultaneously with either the microwave or front element.
Function Test Set-Up
Meter
Setting
Probe Placement Results
Input to H.V. board At H.V. board Volts
J1 pin 1 (Black wire)
& J1 pin 2 (Red wire)
Line voltage
Output to display board
Disconnect
J5 connector
Volts
J5 pin 28 &
J5 pin 50
- 24 VDC
NOTE: For the following test, place oven in Service Test Mode (see page 23).
Relay Function
Meter
Setting
Probe Placement Results
K1
Cooling &
Conv fan
Volts
E2 (Red wire) &
E4 (Black wire)
Test mode pad 1 off – No voltage
Test mode pad 1 on – Voltage
K2
Heater Top
RH & LH
Volts
E2 (Red wire) &
Back terminal on Heating Element (Hinge
Side) (Violet wire)
Test mode pad 2 off – No voltage
Test mode pad 2 on – Voltage
K3
Convection
heater
Volts
E2 (Red wire) & Convection Heating
Element (Gray wire)
Test mode pad 4 off – No voltage
Test mode pad 4 on – Voltage
K5
Cooling &
Conv fan
Volts
E2 (Red wire) & Auto Transformer
(Orange wire 230 terminal)
Test mode pad 1 off – No voltage
Test mode pad 1 on – Voltage
K7
Microwave Volts
E2 (Red wire) & Power Relay (Orange
wire terminal 0)
Test mode pad 3 off – No voltage
Test mode pad 3 on – Voltage
K8
Microwave
Volts
E2 (Red wire) & Transformer
(Red wire 230 terminal)
Test mode pad 3 off – No voltage
Test mode pad 3 on – Voltage
K4
Cooling &
Conv fan
Volts
E2 (Red wire) & Auto Transformer (Yellow
wire 208 V terminal)
Test mode pad 1 off – No voltage
Test mode pad 1 on – Voltage
K9
Microwave
Volts
E2 (Red wire) & Transformer
(Black wire 208 terminal)
Test mode pad 3 off – No voltage
Test mode pad 3 on – Voltage
