Nortel Meridian SL-1 Supplementary Manual page 31

Figure 2-8
Typical QSD81 Shelf Circuit Pack Layout
Q Q Q
P P P
C C C
4 4 4
N Q Q N 1 Q 1 Q 1 Q
o P P T 4 P 4 P 4 P
C C C C
t C 8
6 7 D E 4 E 4 E 4
U 8 4 1 N 1 N 1 N 1
s 7 2 9 E 4 E 4 E 4
e A T T T
d C F A E E E
P D or N or N or N
U I E E E
N T N T N T
M
M T T T
P 8 8 8
S D D D
0 0 0
4 4 4
1 2 3 4 5 6 7 8 9 10
MEM CPU MSI MS/PS LP LP LP LP LP LP
0/1 2/3 4/5 6/7 8/9 10/11 12/13
Note 3
Note 1: To avoid a system failure, do not install a QPC471 or QPC775 Clock Controller circuit
pack in slots 13, 14 or 15. These circuit packs can be installed in any available slot 5 through 12.
Note 2: When the NT8D68AA Floppy Disk Module is installed within two slot spaces of the
Converter the shield must be installed between it and the Converter.
The NT8D68AA Floppy Disk Module can be located elsewhere or in another shelf if these slots
are not available.
Note 3: QPC414 ENET can be installed in slots 5 through 12.
NT8D04 can be installed in slots 5 through 12 (default slots are 5, 7, 9, 11).
SDI can be installed in slots 5 through 15 (recommended slots are 13, 14, 15).
NT8D17AA can be installed in slots 5 through 12 (recommended slot 12).
Upgrading LE, A, M, MS to Option 21 2-23
Shelf
Backplane
Q Q
D
Connector
P P
P7
C
C
4 1
1 N 3 Q
4 T 9 P
NT8D68AA GND
Black (or White)
FLOPPY
8 C
Short Lead
DISK
E D S 3
MODULE
-48V-0
N 1 D 5
Red
Note 2
E 7 I 5
T A
-48VGND
or
Black (or White)
A C
Long Lead
or O
C Q N
-48V-1
Shield
N T P
V
C
T
8 8
D 4
0 1
G
4 Note 1
11 12 13 14 15 16
LP LP SDI SDI SDI CONV
14/15 DTI DTI DTI
Shelf upgrades to Meridian 1 553-3001-253
To Cabinet
Power Wiring
Harness
(Tape and store
remaining blue
lead)