R-354M (serv.man4). Complete - Sharp Home Appliance Service Manual (repair manual). Page 5

R354M - 5

Ensure the following:

1. Wires must not touch:

a) High voltage parts.
    (Magnetron, high voltage transformer, high voltage capacitor and high voltage rectifier assembly)
b) Parts that become hot.
    (Oven lamp, oven cavity magnetron and high voltage transformer)
c) Sharp edges.
    (Bottom plates, oven cavity, waveguide flange, chassis support and other metallic parts)
d) Movable parts.
    (Fan blade, any motor, switch)

2. Positive lock connectors are fitted correctly.
3. Wires are connected correctly as per pictoral diagram.
4. No wire leads are trapped by the outer wrap.

WARNING: WIRING/RE-WIRING
Before carrying out any work; carry out 3D checks.
1. Disconnect the supply.
2. Door opened, and wedged open.
3. Discharge the high voltage capacitor.

Latch Hooks

Stop Switch
SW3

Monitor Switch
SW2

Monitored Latch
Switch SW1

1.  When the oven door is closed, the contacts (COM-

NO) must be closed.

2.  When the oven door is opened, the contacts (COM-

NO) must be opened.

If the oven door is opened and the contacts
(COM-NO) of the monitored latch switch SW1
fail to open, the fuse F1(F8A) blows
simultaneously with closing the contacts
(COM-NC) of the monitor switch SW2.

CAUTION:  BEFORE REPLACING A BLOWN

FUSE F1 TEST THE MONITORED
LATCH SWITCH SW1, MONITOR
SWITCH SW2.