Forza Elipse Series, Service Manual

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5.4.4 Static Impedance Characteristic Of PCB board.
After find out the failure board, to find out the broken component, you can measure the
impedance of the major components with multimeter. Following tables record Static Impedance
Characteristic Of PCB board for reference.
5.4.4.1 PSDR Board
a. IP Rectifier parts:
Item Checked components DVM Function Reference Value Fail Condition
1 F301, F302
Ω
0
Ω
open
(A, K)
Ω ≈
1.4M
Ω
short
2
Q301
Q302
(G, K)
Ω
≈
10
Ω
short
b. Voltage boosting parts:
Item Checked components DVM Function Reference Value Fail Condition
(E, C)
Ω
≈
800k
Ω
short
1
Q306, Q308
、
Q310
Q307, Q309
、
Q311
(G, E)
Ω
15.8k
Ω
short or open
2 D308, D310 DIODE
≈
0.35V
0V
3
R325, R331, R334, R342
、
R337 、 R328
Ω
10
Ω
open
4
390, R388, R389
、
R393
、
R392 、 R391
Ω
2.2
Ω
open
4
D302, D304, D306, D303
、
D305 、 D307
DIODE
≈
12
Ω
open
c. Battery switch parts:
Item Checked components DVM Function Reference Value Fail Condition
1
F303
、
F304
Ω
0
Ω
open
(A, K)
Ω
≈
2.5M
Ω
short
2 Q305
(G, K)
Ω ≈
10
Ω
short
d. INV parts:
Item Checked components DVM Function Reference Value Fail Condition
1 Q201, Q202, (E, C)
Ω
≈
100k
Ω
short