AEC Star T3 - Boost Analysis

ST3 6-10kVA Service Manual Rev.1
Allis Electric Page 5 of total 12 September 2006
3. Troubleshooting
3.3 Boost Analysis
6/10kVA-Boost-Right side
6/10kVA-Boost-Left side
Step Checked components Instrument
function
Reference
Value
Failure Mode
(E,C) Ω 800kΩ short 1 Q306~Q311
(G,E) Ω 15.8kΩ short or open
2 D308, D310, D309, D311 DIODE 0.35V 0 V
3 D302, D304, D306, D303,
D305, D307
DIODE 12Ω open