AEC Star T3 - PFC; Boost; Inverter IGBT Driver Module Analysis

ST3 6-10kVA Service Manual Rev.1
Allis Electric Page 10 of total 13 September 2006
3. Troubleshooting
3.6 PFC / Boost / Inverter IGBT Driver Module Analysis
6/10kVA-Boost-Right side
6/10kVA-Boost-Left side
Step Checked components Instrument
function
Reference
Value
Failure Mode
ZD201 V 0.7V 0V
Q201,Q202 V V
BE
=0625V,
V
BC
=0.625V
0V
1(RED)
R203,R205
Ω 10Ω Open
D201 V 0.580V 0V 2(BLUE)
Q01
V V
SD
=0.5V
V
SG
=2.225V
0V