User Manual

Diagnostics and Troubleshooting
4-13
Figure 4.3 – 890A SB3000 Power Module Fuse Locations
F105B
F104B
PHASE W
PHASE V
POWER MODULE B
F103B
PHASE U
AC INPUT
181 182 183
PMI RACK
PHASE W
F105A
F104A
S
L
O
T
7
S
L
O
T
6
PWR. MOD A
GDI
PWR. MOD B
GDI
+
F101AF101BF102B F102A
PHASE U
F103A
∗
PS
PS
LPI CIRCUIT
2FU
3FU
1FU
+24V
±15V
D/S
110V
-
-24V
25KHZ
PS
(
+
)
POWER MODULE A
PHASE V
PS
DC Bus
Fuses
Control Power
Fuses
AC Input
Phase
Fuses
AC Input
Phase
Fuses
∗
∗
See Table 4.5
∗∗∗
21FU-
26FU
11FU
12FU