CHECKER
The checker is used when repairing or adjusting the touch
control panel assembly and relay unit.
When connectors coming from the checker are connected
to respective connectors on the control panel components
or relay unit, A.C. power can be supplied from checker
(including relay unit) to control panel components so that
the panel components can be operated, being separated
from the oven circuit electrically.
Use of Checker
a) for repairing
for executing test program
“Test Program” is executed by using the checker.
Connection Method
Control Panel Assembly:
1. Connect the 1 l-pin connector
to the control
unit.
2. Connect the
connector
(for stop switch)
to the control unit.
3. Connect the
connector
(for damper
switch and thermistor) to the control unit.
Relay Unit:
1. Connect the
connector
(for stop switch)
to the New control unit.
2. Connect the
connector
(for damper
switch and thermistor) to the New control unit.
3. Connect the
connector
to the de-
fective relay unit.
4. Connect the 1 l-pin connector
of defective
relay unit to the New control unit.
Table 1 shows the relation between the indicator lamps of
the checker, energized relays of the relay unit, and LSI
(I-1 ) signals.
Table 1
INDICATOR
OPERATIONAL
SIGNAL
LAMP
RELAY
FROM LSI (l-l)
Oven Lamp
RY2
D2
Turntable Motor
Cooling Fan Motor
Convection Motor
Heater
Cook
Damper
RY3
Operates at
12V D.C
RY4
D4
D O
D3
D5
Note: The damper- indicator light is turned on or off by
the damper motor and damper switch in the checker.
Damper indicator light on: Damper is open posi-
tion
Damper indicator light off: Damper is closed posi-
tion
SENSOR DUMMY RESISTANCE
R e s i s t a n c e
D
i
s
p
l
a
y
V
a
l
u
e
2
1 % L O C
3
: 3 0
4 --
: 6 . 1
5
:
4
11
6
: 1 . 7
7
: 400
0.1%
8
:
1
1%
Open judge
80
Summary of Contents for R-8320E
Page 119: ...PRINTED WIRING BOARD CONTROL UNIT P M 0 3 12 1 I To 12 n 118 ...
Page 122: ...PRINTED WIRING BOARD RELAY UNIT t 121 ...
Page 133: ...CABINET PARTS 0 7 2 132 ...
Page 134: ...0 4 4 0 4 l 133 ...
Page 135: ...134 ...
Page 136: ...OVEN PARTS II I k5 rI f 135 ...
Page 137: ...136 ...
Page 138: ...CONTROL PANEL PARTS 3 3 P 0 0 J I I f I I I I II II I 3 l 0P 0 7 i J a 81 J Y0 3 5 137 ...
Page 139: ...DOOR ASSEMBLY I MISCELLANEOUS Tra Capa Mag 138 ...