Sharp R-4G54M (serv.man13) Service Manual / Technical Bulletin ▷ View online
Sharp Electronics (UK) Limited
Originator AJ Supervisor Approval Date / / Reference TRS-036
Revision
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
MWO960107
Month of Issue:
Classification: Routine
MICROWAVE TECHNICAL BULLETIN
Page 1 of 1
MODELS
R4E54M
R4G55M
R4E55M
R4G55SM
SYMPTOM Intermittant fuse blowing.
CAUSE
The above symptom may be caused by.
1. Open lever 'bounce' sufficient to result in it engaging the primary latch switch when
the door is closed.
2. Open lever 'locking' in an upward position thus affecdting the contact opening time
between primary latch and monitor switches.
ACTION
1. Remove the open button from the control panel.
2. Remove the open button spring.
3. Clean the contact surfaces of the open button and control panel.
4. Re-fit the open button applying one spring on each of the outer embosses of the
2. Remove the open button spring.
3. Clean the contact surfaces of the open button and control panel.
4. Re-fit the open button applying one spring on each of the outer embosses of the
open button.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
3-6
Open Button Spring
MSPRCA045WREO
AA
Display
