Haier EA-1770EG Service Manual page 19

The resistance value of the two terminals shall be 14k~15kohm
H. Measurement of the AK rectifier
Under normal condition, it is infinite to measure in two condition.
Attention: If the fuse is burned out, it is probably breakdown by the AK
rectifier. Please first replace that part then do the test. Note that the
direction shall be correct.
Attention: All of the tests shall be performed after the H:
filter
stubs are pulled off.
CONTROL BOARD
Grill relay
Microwave relay
Transformer
Maintenance Service and Trouble Shooting
- 18 -
Test of the
Film switch interface
Power interface