HP 24A, 83620A, 22A manual Routine Maintenance, Fuse Part Numbers

Routine

Maintenance

WARNING

How to Replace the Line Fuse

Note

Routine maintenance consists of replacing a defective line fuse, cleaning the air filter, cleaning the cabinet, and cleaning the display. These items are discussed in the following paragraphs.

Table 4-1. Fuse Part Numbers

For continued protection against fire hazard replace line fuse only with same type and rating. The use of other fuses or material is prohibited.

The value for the line fuse is printed on the rear panel of the synthesizer next to the fuse holder. See Figure 4-l

1.Turn off the synthesizer.

2.Remove the ac line cord.

The detachable power cord is the instrument disconnecting device. It disconnects the mains circuits from the mains supply before other parts of the instrument. The front panel switch is only a standby switch and is not a LINE switch.

3.Using a small flat-blade screwdriver, rotate the fuse cap counter-clockwise, and remove the fuse holder.

4.Replace the original fuse.

5.Replace the fuse holder in the rear panel. Using the screwdriver, rotate the fuse cap clockwise to secure the fuse holder in place.

6.Reconnect the synthesizer to line power.

CFIUTION:

! F O R F I R E P R O T E C T I O N R E P L A C E

A

HOLOERFUSE

Figure 4-1. Replacing the Line Fuse

4-4 Operator’s Check/Routine Maintenance Specifications