Test Data At A Glance - Sharp R-2277 Service Manual

Parts
Weak point
Fuse
Weak point
Fuse
Fuse
Thermal cut-out (Mag)
Thermal cut-out (Mag.)
Thermal cut-out (Blower motor)
Thermal cut-out (Oven)
Thermistor (Exhaust)
25˚C
Thermistor (Intake)
Thermistor (Magnetron)
Monitor resistor
Oven lamp
High voltage capacitor (R-2287)
High voltage capacitor (R-2287)
High voltage transformer (R-2287)
High voltage transformer (R-2277)
Magnetron
Magnetron
In/Out pit terminal
Input terminal (Power suplly)
Output terminal (Stop switch)
Output terminal
(Oven lamp +Blower motor
+ Stirrer motor)
Output terminal (Earth)
WARNING: DISCONNECT THE PLUG WHEN MEASURING RESISTANCE.

TEST DATA AT A GLANCE

Symbol Value / Data
WP1 , WP1 A018 for R-2287
WP1, WP2 M6.3A for R-2277
F1 A017 for R-2287
F1 13A for R-2277
F2 F6.3A 250V
TC1 145˚C
TC2 145˚C
TC3 115˚˚C
TC4 115˚˚C
Approx. 77.45kΩ at 15˚C, 61.47KΩ at 20˚C, 49.12KΩ at
Approx. 15.8kΩ at 15˚C, 13.03KΩ at 20˚C, 10.74KΩ at 25˚C
Approx. 15.91kΩ at 15˚C, 13.04KΩ at 20˚C, 10.74KΩ at 25˚C
R1 4.3Ω 20W
OL 250V 25W
C1, C2 1.07µF AC 2100V
C1, C2 0.94µF AC 2100V
T1, T2 Filament winding < 1Ω
Secondary winding Approx. 57Ω
Primary winding Approx. 1Ω
T1, T2 Filament winding < 1Ω
Secondary winding Approx. 83Ω
Primary winding Approx. 2Ω
MG1 Filament winding < 1Ω
Filament winding - chassis ∞ Ω
MG2 Filament winding < 1Ω
Filament winding - chassis ∞ Ω
TEST POINT ON CONTROL UNIT
Test Point
A5- A7
B1- B2
A1- A7
B1- Chassis
29
Resistance (Disconnect the
Volt power plug and close the door.)
230V Approx. 790Ω
0
230V Approx. 225Ω
0
R-2277
R-2287