NAD T534AH
Instrukcja Serwisowa

ELECTRICAL TROUBLESHOOTING GUIDE
1. Power check flow
A. No VF+ B. No 5V_A

Is 5.2VA section working?
YES

NO

NO

Is 5.2VA section working?
YES

Check F102
YES

No 5.2VA

NO

Is 5.2V present at emitter of Q107?
YES

Replace D102.

Check F101

Replace Q107.
YES

Is there a DC voltage at R101?
NO

NO

Replace R101.
YES

Is there a DC voltage At (+) terminal of BD101?
YES

NO

Replace BD101.

Replace IC101.

3-2