American Magnetics 4Q12125PS-430 High Stability Integrated Power Supply System - Manual (Page 155)

Rev. 5 137
Service
Troubleshooting Hints
b. Remove the Model 430 Programmer top cover and check all fuses
for continuity.
c. If a fuse is bad, replace with a fuse of identical rating:
Caution
Installing fuses of incorrect values and ratings could result in
damage to the Model 430 Programmer in the event of component
failure.
c. Replace the fuse and securely fasten the Model 430 Programmer
top cover. Reconnect the power-cord.
4. Verify the input voltage selector switch on the Model 430
Programmer printed circuit board is in the proper position for the
available input power. Checking the input voltage selector requires
removal of the top cover of the Model 430 Programmer. Observe the
same safety procedures as presented in step 2, above.
5.2.3 FAILURE TO LOAD message displayed after power-up
1. Power the Model 430 Programmer off using the front panel power
switch.
2. Wait at least 15 seconds.
3. Power the Model 430 Programmer on using the front panel switch.
Table 5-1. V-V Mode Input Range Picklist Values
Fuse Identification Fuse Rating Fuse Size
F1 T 800 mA
5 x 20 mm
F2
T 250 mA
F3
F4
T 100 mA
F5
F6
F7