STC30 Plus (v4.1) Transformer
(Rev 1.0 8/8/08)
Corporate Headquarters:
1080 North 11th Street, San Jose, CA 95112 Phone: (408) 292-2214 Fax: (408) 292-2733
www.etorque.com
Step 01
Check Q33, Q31. Mostly you can find burn, ark or broken evidence visually with a damaged one. Q33 is more open than Q31 in damaged
condition. If you didn't find any evidence of failure, please test the component with multi-tester as below.
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Step 01
Step 02
With the failure of Q33 and Q31, the following components are commonly damaged, too. Check the following process
The Q01 is same kind of component with the Q33 and Q31. The damaged Q01 is related with the preceding failure of SB01 circuit module
by mainly continuous over load situation.2 The R05 ( 0.1 ohm ), R06 and R07 resistor can be damaged, too. Q01 can be check visually
first, and multi-tester. The SB01 should be always replaced with the damaged Q01.
