28
R-2275
R-2285
TEST DATA AT A GLANCE
Parts
Symbol
Value / Data
Weak point (R-2285)
WP1
A018
Weak point (R-2285)
WP2
A018
Weak point (R-2285)
F1
A017
Fuse (R-2275)
WP1
M6.3A
Fuse (R-2275)
WP2
M6.3A
Special fuse (R-2275)
F1
13A
Fuse
F2
F6.3A 250V
Thermal cut-out (Mag)
TC1
145˚C
Thermal cut-out (Mag.)
TC2
145˚C
Thermal cut-out (Blower motor)
TC3
115˚˚C
Oven temp. fuse
TF
150˚C
Thermistor (Exhaust)
Approx. 61.5k
Ω
at 20˚C, 39.5K
Ω
at 30˚C
Thermistor (Air intake)
Approx. 3.14k
Ω
at 15˚C, 2.57K
Ω
at 20˚C, 2.11K
Ω
at 25˚C
Surge resistor
R1
10
Ω
20W
Surge resistor
R2
10
Ω
20W
Monitor resistor
R3
4.3
Ω
20W
Oven lamp
OL
250V 25W
Surge relay
RY-S1
Approx. 160
Ω
Surge relay
RY-S2
Approx. 160
Ω
High voltagr capacitor
C1
1.07
µ
F ( R-2285)/ 0.94
µ
F (R-2275), AC 2100V
High voltagr capacitor
C2
1.07
µ
F ( R-2285)/ 0.94
µ
F (R-2275), AC 2100V
High voltage transformer
T1
Filament winding < 1
Ω
Secondary winding Approx. 83
Ω
(R-2285) / 98
Ω
(R-2275)
Primary winding Approx. 1.3
Ω
(R-2285) / 1.5
Ω
(R-2275)
High voltage transformer
T2
Filament winding < 1
Ω
Secondary winding Approx. 83
Ω
(R-2285) / 98
Ω
(R-2275)
Primary winding Approx. 1.3
Ω
(R-2285) / 1.5
Ω
(R-2275)
Magnetron
MG1
Filament winding < 1
Ω
Filament winding - chassis
∞
Ω
Magnetron
MG2
Filament winding < 1
Ω
Filament winding - chassis
∞
Ω
Resistance (Disconnect the
In/Out pit terminal
Test Point
Volt
power plug and close the door.)
Input terminal (Power suplly)
A5- A7
225V
Approx. 680
Ω
Output terminal (Stop switch)
B1- B2
0
Output terminal (Themistor)
B1- B3
DC. 5V
Approx.
61.5 k
Ω
at 20˚C , 39.5 k
Ω
at 30˚C
Output terminal
A1- A7
225V
Approx. 26
Ω
(Oven lamp +Blower motor)
Output terminal (Surge relay)
B4- B5
DC. 12V
Approx. 80
Ω
Output terminal (Earth)
B1- Chassis
0
WARNING: DISCONNECT THE PLUG WHEN MEASURING RESISTANCE.
TEST POINT ON CONTROL UNIT