AEC Star T3 - Charger Module Analysis

ST3 6-10kVA Service Manual Rev.1
Allis Electric Page 8 of total 12 September 2006
3. Troubleshooting
3.5 Charger Module Analysis
6/10 kVA-Charger Module- Long back-up type
Step Checked components Instrument
function
Reference
Value
Failure Mode
1
F1
Ω
0
Ω
open
(E,C)
Ω
≈1M
Ω
2
Q301
Q105
(G,E)
Ω
10k
Ω
3
D303
DIODE
≈0.4V
0V
4
R315
Ω
10
Ω
open
5
R319
Ω
1k
Ω
open
6
D106
DIODE
≈0.4V
0V
7
R112,R159
Ω
10
Ω
open
(A,K)
Ω
≈1M
Ω
8
Q04
(G,K)
Ω
≈12
Ω
9
R320,R321,R322,R340,R339,
R341
Ω
≈0.5/6
Ω
open