Sharp R-820BK Service Manual page 25

PROCEDURE
LETTER
STEPS
1
2
8) Disconnect the power supply cord, and then remove outer case.
9) Open the door and block it open.
10) Discharge high voltage capacitor.
11) Reconnect all leads removed from components during testing.
12) Re-install the outer case (cabinet).
13) Reconnect the power supply cord after the outer case is installed.
14) Run the oven and check all functions.
TEST PROCEDURES
OCCURRENCE
The rated AC voltage is not present between
Pin No. 1 of the 3-pin connector (A) and the
common terminal of the relay RY6.
The rated AC voltage is present at primary
side of low voltage transformer.
23
COMPONENT TEST
CAUSE OR CORRECTION
Check supply voltage and oven power cord.
Low voltage transformer or secondary circuit defective.
Check and repair.
R-820BK
R-820BW