TC12 Installation, Commissioning & Maintenance Handbook
Figure 17 - Master Switch Panel Fuses
FS6 FS7
PSU
FS1 FS2 FS3 FS4 FS5
MASTER SW 10A
WALL
MAP
CABINET
RCD 5A
FRONT
13A SKT
5A
REAR
13A SKT
5A
MAINS
SKT B
5A
MAINS
SKT C
5A
MAINS
SKT D
5A
MAINS
SKT E
Master Switch and RCD.
The diagram above shows the layout of the fuses on the Master Switch Panel
uses FS1 to FS7 is shown along with the fuse value.
.
ap power supply, if fitted.
2.4.1
hould be replaced every five years, otherwise it may
o the equipment. The replacement date is therefore five years
wer Supply Tests
of being faulty, check the voltage outputs of the
s easier.
terminal pins on the PCB. The terminal
also labelled with a voltage. Check these
e between TP7, GND and TP5, +5 V should be between 4.75 V and
.25 V.
assembly. The position of the f
Fuse FS1 protects the front Ma i n s so ck et s.
Fuse FS2 protects the rear Mains sockets
Fuses FS3 to FS6 protect the Mains supply to up to four 19” racks.
Fuse FS7 protects the Wall M
0 PSU
The part number of the power supply fitted to the PSU board is 667/7/22631/000.
The Instation power supply s
become prone to overheating. There may be a label already on the PSU showing
the date it was shipped. This should be covered with a label showing the date the
PSU is fitted int
after the date on the label.
Po
f the power supply is suspectedI
power supply using a Multimeter.
Slide the PSU Board forward slightly to make acces
Wires connect from the power supply to
pins are labelled TP4 to TP9 and each is
as follows:
The voltag
5
666/HE/43100/000 Page 60 Issue 9