Download 2.Specifications

Troubleshooting
Test point No.
Test point
Corresponding component
Test value under normal
situation
Test 1
Between A and C
Neutral wire and live wire
160V-265V
Test 2
Between B and C
Neutral wire and live wire
160V-265V
Test 3
Between D and E
Electrolytic capacity of DC bus bar
180VDC-380VDC
Test 4
Between F and G
Electrolytic capacity of switch power
180VDC-380VDC
supply
Test 5
Two terminal of diode D10
D10
(IPM
modular+15V
power
14.5V-15.6VDC
supply)
Test 6
Two terminal of flaky capacity C56
C56 (+12V power supply)
12V-13VDC
Test 7
Two terminal of flaky capacity C58
C58 (+5V power supply)
5VDC
Test 8
Two terminal of flaky capacity C83
C83 (+3.3V power supply)
3.3VDC
Test 9
Two terminal of flaky capacity C80
C80 (+17V power supply)
15-18VDC
Test 10
M forward to GND
M terminal of R75 forward to ground
Jump between 0-3.3V
(outdoor signal send TXD)
Test 11
N forward to GND
N terminal of R78 forward to ground
Jump between 0-3.3V
(outdoor signal send RXD)
Test 12
O
Receiving terminal of optical coupling
Jump between 0.3-1.7V
(audion side)
Test 13
P
Sending terminal of optical coupling
Jump between 0-1.1V
(LBD side)
Test 14
Q
Sending terminal of optical coupling
Jump between 0-1.1V
(LBD side)
Test 15
R
Receiving terminal of optical coupling
Test 16
Between S-T
Power supply of communication ring
Jump between 0-24V
(audion side)
66
56VDC