System requirements
Page 25 of 48
Message Center Description and operation
Figure 1
QSY22 Power Supply connections
Fuse block
Fuse
P14 and P15
connectors from
power wiring
harness in cabinet
To -48V input on TBC
GRD connection to GRD bus
Input switch
Left mounting
bracket
PO634871
Dummy fuse
F2
F4
F6
F8
F1
F3
F5
F7
F11
F13
F15
F10
F12
F14
F16
TB1
–48V GRD –150V
J15
–150V OUT
1 2 3 4
J14
–150V OUT
F9
–48V
6.25 A
SLO BLO
1
0
Q S Y 2 2 C
–150V FA
–150V FA
MSG WTG PWR SPLT
SW1
To GRD on TBC
Input fuse
Fuse No.
F1-F7,F10-F16
F8
Dummy fuse
Amps
0.18
1.33
—
QCODE
QFF1E
QFF1A
QFF3A
Color
Yellow
White
—
553-5853