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touch control panel with a jumper, which brings about
an operational state that is equivalent to the oven door
being closed. As for the sensor-related controls of the
touch control panel, checking them is possible if dummy
resistor(s) with resistance equal to that of the controls
are used.
(2) Servicing the touch control panel with power supply
from an external power source:
Disconnect the touch control panel completely from
the oven proper,and short both ends of the door
sensing switch (on PWB) of the touch control
panel,which brings about an operational state that is
equivalent to the oven door being closed. Connect an
external power source to the power input terminal of
the touch control panel, then it is possible to check and
repair the controls of the touch control panel it is also
possible to check the sensor-related controls of the
touch control panel by using the dummy resistor(s).
4. Servicing Tools
Tools required to service the touch control panel as-
sembly.
1) Soldering iron: 60W
(It is recommended to use a soldering iron with a
grounding terminal.)
2) Oscilloscope: Single beam, frequency range: DC-
10MHz type or more advanced model.
3) Others: Hand tools
5. Other Precautions
1) Before turning on the power source of the control unit,
remove the aluminium foil applied for preventing static
electricity.
2) Connect the connector of the key unit to the control unit
being sure that the lead wires are not twisted.
3) After aluminium foil is removed, be careful that abnor-
mal voltage due to static electricity etc. is not applied to
the input or output terminals.
4) Attach connectors, electrolytic capacitors, etc. to PWB,
making sure that all connections are tight.
5) Be sure to use specified components where high
precision is required.
1) Practice for checking total service counts
(eg; 234,567 Counts).
--- flashing / ---0.1sec. BUZZER
PAD DISPLAY INDICATOR LED PHONE
(door close) •
•
CHECK NUMBER • CHECK
CHECK #1 82 68 CHECK
(user total count)
#2
VOLUME
VOLUME
DOUBLE 2 34 56 7
QUANTITY (service total count)
1 NUMBER 1
(after 1 sec.)
45
(filter used time)
2 NUMBER 2
(after 1 sec.)
2 00
(filter lim. time)
0 (No 10) NUMBER 10
(after 1 sec.)
35 43 2
(service total cook time)
CHECK •
#1: Denotes total service counts within the reach of user,
of which checking and clearing practices are de-
scribed in this instruction manual.
PROCEDURE FOR CHECKING/CLEARING SERVICE COUNTS OF MICROWAVE OVEN
The following procedure enables the servicer to obtain the total service counts (cook cycles) for memory cooking, manual,
repeat, double quantity cooking and defrost. The maximum capacity of the counter is 999,999 counts, above which the
counter will reset to "0". The counter will retain the total counts (will not clear) in the event of a power disruption.
#2: Denotes the procedure for the servicer to disable
checking/clearing. This procedure is instructed to serv-
ice personnel only and is excluded from the operation
manual.
2) Practice for clearing Service's counts
" " : Flicker / : 0.1 sec BUZZER
PAD ORDER DISPLAY PHONE
(Door close) •
CHECK "NUMBER" • CHECK
CHECK 82 68 "CHECK"
(User's Total Counts)
#1 VOLUME 82 68 "CHECK"
VOLUME 82 68 "CHECK"
DOUBLE QUANTITY 2 34 56 7 "CHECK"
(Total Counts Service)
SET 0 "CHECK"
00 "CHECK"
SET 0 "CHECK"
CHECK •
#1: Denotes the procedure for the servicer to disable
clearing. This procedure is instructed to service per-
sonnel only and is excluded from the operation manual.