9
4
CONNECTIONS…
4.4
Replacing the Fuses – Fig. 4.5
The instrument is protected by two fuses located on the probe heater supply p.c.b. In order to replace the fuses, the main analyzer
p.c.b. must be removed for access as shown.
Unlock and carefully
remove the upper
enclosure cover.
See
Caution.
1
Disconnect the front panel
ribbon cable at the main
p.c.b. end
2
Remove the screws securing the main
p.c.b. and carefully move it aside to gain
access to the fuses located on the probe
heater supply p.c.b. beneath
3
4
Locate and replace the fuses
as required
Offer the cover up to the enclosure and reconnect the
ribbon cable
6
Refit the upper enclosure cover and lock securely
7
Relocate the main p.c.b. and secure with the screws
5
F2
115V
230V
ZDT-0203
-0200B
ISS.1
Fuse 1 – Probe Heater Supply
Fuse 2 – Mains Supply
Note.
Fuse Part No: B10144
Rating:
2.5A
Size:
20mm
Type:
Anti-surge
Fig. 4.5 Replacing the Fuses
Caution. The upper enclosure door is not hinged
or captive when unlocked.
