STG

RRA Diode

Check with multimeter 

Value between 300 to 450 only

STG Cleaning

1. Cleaning with Dry Ice

STG

Bearing Test

Damaged or not 

1. Thickness 

2. Cracking with DP test

Bimetallic Bearing - Bearing metal 0.4mm , rest other metal SS

1. Bearing metal 

0.4mm thickness

While removing checking by lead wires

STG - 0.278mm

2. 

DP Test

Die Penetrating Test

1. Cleaner

2. Penetrant 10min apply then clean with cloth

3. Developer - white flim with purple patches where damaged area