31
R-7A55(W)/(B)
R-7E45(W)/(B)
TEST DATA AT A GLANCE
Parts Symbol Value / Data
Fuse F1 15A 250V
Fuse F2 F6.3A 250V
Fuse F3 F10A 250V
Monitor resistor R1 4.3Ω 20W
Thermal cut-out TC1 170˚C
Thermal cut-out TC2 125˚C
Thermal cut-out TC3 190˚C (Off point)
170˚C (On point)
Thermistor Approx. 326 kΩ - 175 kΩ at 20˚C - 30˚C
Grill heating element GH Approx. 22 Ω. x 2 = 44 Ω
Insulation resistance > 10MΩ
Convection heating element CH Approx. 39Ω
Insulation resistance > 10MΩ
Oven lamp OL 220 - 230 V 25W E14
High voltagr capacitor C 1.2µF AC 2100V
Magnetron MG Filament < 1Ω
Filament - chassis ∞ ohm.
High voltage transformer T Filament winding < 1Ω.
Secondary winding Approx. 81.7Ω.
Primary winding Approx. 1.22Ω
Resistance (Disconnect the
In/Out put terminal Test Point Volt power and door is closed)
Input terminal (Power supply) A1 - A3 220 - 230V Approx. 480 Ω
Input terminal (Stop switch) B1 - B2 - 0
Input terminal (Thermistor) B5 - B6 DC. 5V Approx. 69 kΩ at 20˚C - 30˚C
Output terminal (Grill heating element) N.O of RY5 - A1 220 - 230V Approx. 170 Ω
Output terminal (Convection heating element) N.O of RY3 - A1 220 - 230V Approx. 200 Ω
Output terminal (Fan motor) A1 - A7 220 - 230V Approx. 340 Ω
Output terminal (Turntable motor and Oven lamp) N.O of RY1 - A1 220 - 230V Approx. 190 Ω
Output terminal (Convection fan motor) A1 - A5 220 - 230V Approx. 300 Ω
Output terminal (Earth) B2 - Chassis - 0
TEST POINTS ON CONTROL UNIT
WARNING: DISCONNECT THE PLUG WHEN MEASURING RESISTANCE.
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