
Troubleshooting
Chapter 11
11-116
Fuse Locations and Types Fuse location and specific fuse information is provided in the paragraphs
that follow.
AC Control Power Fuses
The electrical location of the AC control power fuses is shown in
Figure 11.2. Refer to Figures 11.10, 11.13 and 11.14 for fuse locations.
Table 11.A provides information on fuse types.
Table 11.A
AC Control Power Fuses – Power Board
Designator Rating Vendor Name & Number A-B P/N
FU1R, FU1S 5A, 250 V Fuji-FGBO 5A 250V
1
145863
FU2R, FU2S, FU2T 5A, 250 V Fuji-FGBO 5A 250V
1
145863
On A11 & A22 only 0.5A, 250 V Fuji-FGBO 0.5A 250V
1
151287
FU3R, FU3S, FU3T
On A04 & A06 only 0.5A, 250 V Daito Tsushin - HM05 151465
FU3R, FU3S, FU3T
1
Any substitute fuse for the Fuji-FGBO type fuses must be a metric style measuring 6.35 mm
diameter by 30 mm long.
Gate Drive and +5V DC Fuses
Fuses for each of the IGBT gate drive circuit outputs and for the +5V DC
logic power supply are located on the Gate Drive or the Main Control
Board, depending on the drive rating. The following tables show the fuse
types used. Refer to Figures 11.9 and 11.12 for fuse locations.
Table 11.B
8510A-A04-x1 and 8510A-A06-x1 – Gate Drive Board
Designator Rating Vendor Name & Number A-B P/N
Gate Drive 0.3A, 250 V Daito Tsushin-HM03 148133
Fuses F1 to F12
5V DC Power Supply 5A, 250 V Daito Tsushin-MP50 148134
Fuse F13
Table 11.C
8510A-A11-x2 and 8510A-A22-x2 – Main Control Board
Designator Rating Vendor Name & Number A-B P/N
Gate Drive Fuses 0.3A, 250V Daito Tsushin - HM03 148133
F1 to F6, F8 to F13
5V DC Power 5A, 250V Daito Tsushin - MP50 148134
Supply Fuse F7
If the +5V DC power supply fuse has opened, a white indicator will show
in the window on the front of the fuse. The +5V DC test point is before the
fuse, so measuring the test point voltage will not verify that the fuse is OK.
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