Introduction; Accessing The Fuse; Cleaning The Air Filter - Fluke 5700A Series II Service Manual

4-1. Introduction

Because this is a high performance instrument, it is not recommended that the user
service the boards to the component level. In many different ways it is easy to introduce a
subtle long-term stability problem by handling the boards. Access procedures are
provided for those who want to replace a faulty module.

4-2. Accessing the Fuse

The fuse is accessible from the rear panel. The fuse rating label to the right of the fuse
holder shows the correct replacement fuse ratings for each operating voltage. To access
the fuse, refer to Figure 4-1 and proceed as follows:
1. Disconnect line power.
2. Using a standard screwdriver, turn the fuse holder counterclockwise until the cap and
fuse are disengaged.
CHASSIS
GROUND
S2 S3 S4

4-3. Cleaning the Air Filter

Damage caused by overheating may occur if the area around
the fan is restricted, the intake air is too warm, or the air filter
becomes clogged.
The air filter must be removed and cleaned every 30 days or more frequently if the
calibrator is operated in a dusty environment. The air filter is accessible from the rear
panel of the calibrator.
VOLTAGE VOLTAGE
FUSE-F1 FUSE-F1
SELECTION SELECTION
S2 S3 S4 S2 S3 S4
100V 200V
T 3A
110V 220V
250V
115V 230V
(SB)
120V 240V
!
FUSE -F1
Figure 4-1. Accessing the Fuse
WCaution
T 1.5A
250V
(SB)
Maintenance 4

Introduction

f7-1.eps
4-3