Sharp R-8720M (serv.man13) Service Manual / Technical Bulletin ▷ View online
Sharp Electronics (UK) Limited
Reference TB-M9905182
Revision 1
White – Carry out as required, Yellow – Carry out as required and whenever the unit comes in for service, Red – Carry out on all units
MWO990603
Month of Issue: June 1999
Classification: White
COMMERCIAL MICROWAVE TECHNICAL BULLETIN
Page 1 of 1
MODELS
R8720M
SYMPTOM Due to a printing error on pages 4 and 5 of the service manual, the circuit description
relating to the pre-heat function is incorrect.
ACTION
Please amend the following text in the service manual.
Page 4 SECTION 1
CURRENT:-
The coil shut-off relays RY1, RY5 and RY7 are energized, the oven lamp, cooling fan
motor, turntable motor and covection motor are turned on.
The coil shut-off relays RY1, RY5 and RY7 are energized, the oven lamp, cooling fan
motor, turntable motor and covection motor are turned on.
AMEND TO:-
The coil of shut-off relays RY1 and RY7 are energized, the oven lamp, cooling
fan motor and turntable motor are turned on.
The coil of shut-off relays RY1 and RY7 are energized, the oven lamp, cooling
fan motor and turntable motor are turned on.
Page 5 SECTION 3-2
CURRENT:-
The oven will continue to function for 15 minutes, turing the convection heating
elements on and off, as needed to maintain the selected preheat temperature. The
oven will shut down completely after 15 minutes.
The oven will continue to function for 15 minutes, turing the convection heating
elements on and off, as needed to maintain the selected preheat temperature. The
oven will shut down completely after 15 minutes.
AMEND TO:-
The oven will continue to function for 15 minutes, turning the top and bottom
grill heating elements on and off, as needed to maintain the selected pre-heat
temperature. The oven will shut down completely after 15 minutes.
The oven will continue to function for 15 minutes, turning the top and bottom
grill heating elements on and off, as needed to maintain the selected pre-heat
temperature. The oven will shut down completely after 15 minutes.
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