Sharp R-771(W)N - Page 32

TEST
DATA
AT
A
GLANCE
Parts
iL
Symbol
|
Value/
Data
2
Special
fuse
er
[tsafesov
=a
CR;
Td
B=
Ee
a
ee
PTT
EGU
|
Thermal
cut-out
(OVEN)
To.
|
100.OC“‘s~S*~S~C~‘“s~‘“<‘<‘<‘<;72
3
XR
Grill
heating
element
(top)
Approx.
22.5
@
x
2
=
45@
/
Insulation
resistance
>
10
M2
Botiom
heating
element
Approx.
66
@
/
insulation
resistance
>
10
M&
ce
A
Fighueiagerepaciot
||
MORO
ae
een
Filament
<
1&
/
Filament
—
chassis
2»
ohm.
T
Secondary
winding
Approx.
96
Q
/
Primary
winding
Approx.
1.9
TEST
POINTS
ON
CONTROL
UNIT
|
Resistance
(Disconnect
the
jn/Out
put
terminal
Test
Point
Volt
powerand
door
is
closed)
input
terminal
(Power
supply)
Yr
aAt-A3_—«{|—230V_——
Approx.
500
22
3
-Sutputterminal
(Fanmoto)
|
_AB-A3__—|_280V_[
Approxg2g@
Output
terminal
(Oven
lamp,
Turntable
motor)|
A3-RY4
COM
230V
Approx.
180
&
Output
terminal
(Earth)
Ba-Chassis
|
-
«+f
082
Output
terminal
(High
voltage
transformer)
|
N.O.
of
RY2
-
AS
230V
Approx.22
|
WARNING:
DISCONNECT
THE
PLUG
WHEN
MEASURING
RESISTANCE.
Note:
AC CORD CONNECTION
BAN: BROWN
BLU: BLUE
G-Y:
GREEN
AND
YELLOW
STRIPE
15:
SECTIONAL
AREA
OF
1.5mm?
MIN.
"y"
indicates
components
with
potential
‘et
above
250
V.
SCHEMATIC
NOTE: CONDITION OF OVEN
1, DOOR CLOSED.
2.[[:
__}
OR
CLOCK
APPEAR
ON
DISPLAY.
TRANSFORMER
POWER
230V ~S0Hz
GRILL HEATER (TOP}
BOTTOM HEATER
HY. RECTIFIER
NOISE SUPPRESSION COIL
Tic TRANSFORMER
‘ L
ASYMMETRIC i,
RECTIFIER,
E
=
(=)
= SWITCH
ee
Figure
O-1
Oven
Schematic-OFF
Condition
R-771
-
32