Test Data At A Glance - Sharp R-363(IN) Service Manual

TEST DATA AT A GLANCE

Parts
Fuse
Thermal cut-out (MG)
Thermal cut-out (OVEN)
Oven lamp
High voltage capacitor
Magnetron
Power transformer
TEST POINT ON CONTROL UNIT
In/Out put terminal
Input terminal (Power supply)
Input terminal (Stop switch)
Output terminal (Oven lamp,
Fan motor, Turntable motor)
Output terminal (Power transformer)
WARNING: DISCONNECT THE PLUG WHEN MEASURING RESISTANCE
WIRING / RE-WIRING
RE-WIRING
Ensure the following:
1. Wires must not touch:
a) High voltage parts.
(Magnetron, high voltage transformer, high voltage capacitor and high voltage rectifier assembly)
b) Parts that become hot.
(Heating elements, oven lamp, oven cavity magnetron and high voltage transformer)
c) Sharp edges.
(Bottom plates, oven cavity, waveguide flange, chassis support and other metallic parts)
d) Movable parts.
(Fan blade, any motor, switch, switch lever and open button)
2. Positive lock connectors are fitted correctly. Ensure the locking pin is located correctly.
3. Wires are connected correctly as per pictorial diagram.
4. No wire leads are trapped by the outer wrap.
Symbol
TC1
TC2
OL
MG
Test Point
RY.COM. - A5
B1–B2
A1–A5
NO. of RY2–A5
WARNING: Before carrying out any work carry out 3D checks
1) Disconnect the supply.
2) Door opened, and wedged open.
3) Discharge high voltage capacitor.
R-363 -
Value / Data
F1 F8A / 250V
125°C
125°C
240-250 V 25W
C 1.0µF AC 2100V
Filament < 1Ω
Filament – chassis ∞ ohm.
T Filament winding < 1Ω
Secondary winding Approx. 130Ω
Primary winding Approx. 2 Ω
Resistance (Disconnect the
power plug and close the door.)
∞
0.2 ohm.
Approx. 197Ω
Approx. 2.5Ω
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