High-Voltage Transformer; Turntable Motor - Whirlpool MH3184XPB Service Manual

Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.

HIGH-VOLTAGE TRANSFORMER

Filament
Wire (OR/RD)
Primary
Terminals
Refer to page 4-24 for the procedure for ac-
cessing the high-voltage (H.V.) transformer.
1. Unplug microwave oven or disconnect
power.
2. Disconnect the wires from the H.V. trans-
former terminals.
3. Disconnect the H.V. transformer wires from
the magnetron and the H.V. capacitor.
4. Set the ohmmeter to the R x 1 scale.
5. Touch the ohmmeter test leads to the fol-
lowing H.V. transformer locations:
• Filament wire (org/red) to ground =
Infinite.
• Primary terminals (red & white) wires =
less than 1 Ω.
• Secondary (red & white) wires = 60 Ω
(approximately).
WARNING
Electrical Shock Hazard

TURNTABLE MOTOR

Secondary Wires
(WH and RD)
Refer to page 4-25 for the procedure for ac-
cessing the turntable motor.
1.
2.
3.
4.
5-8
Unplug microwave oven or disconnect
power.
Disconnect one of the wires from the
turntable motor terminals.
Set the ohmmeter to the R x 10K scale.
Touch the ohmmeter test leads to the
motor terminals. The meter should indi-
cate between 2700 and 3800 Ω.