Toshiba Strata DK 280 Installation Manual page 120

because an RRCS PCB can be installed on RCTUBA
only and not on BB. The combined RCTUC/D
common control unit can support up to 24 DTMF
receiver circuits. Both the RCTUC and the RCTUD
PCBs can be equipped with any of the three RRCS
versions. RRCSs can be installed on both the RCTUC
and the RCTUD at the same time. If only one RRCS is
installed, the RRCS must be on the RCTUC. Always
install the RRCS on the RCTUC before RCTUD.
Remove the RCTUBA or the RCTUC and the
RCTUD from their protective packages. Remove
the RRCS(s) from its protective packaging.
1
Note:
The RRCS connectors on the RCTUBA or
RCTUC PCB are labeled P3, P4, P5, and P6.
The RRCS connectors on the RCTUD PCB
are labeled P5, P6, P7, and P8. The
connectors on both PCBs are positioned to
allow installation of the RRCS only in the
proper position.
2. Mate RRCS connectors J1, J2, J3, and J4 (Figure
4-2) with RCTUBA
P5, P6. (The connectors on each of the three
RRCS versions are labeled J1, J2, J3, and J4.)
3. Apply firm, even pressure to the RRCS
proper mating of the connectors.
If applicable, mate
4.
and J4 (Figure 4-5) with RCTUD connectors P5,
P6, P7, P8.
RRCS versions are labeled J1, J2, J3, and J4.)
Apply firm, even pressure to the RRCS to ensure
5.
proper mating of the connectors.
4-6
to 12 DTMF receiver circuits
or RCTUC connectors
RRCS connectors J1, J2, J3,
on
(The connectors each of the three
4.3.2 Common
Procedures
RCTU PCB Installation
Install the RCTU common control unit in accordance
with the following steps (refer to Figures 4-4
Do not remove the plastic insulation shield
from the back of the RCTU PCB. If the shield
comes off, do not allow the back
contact metal.
packaging.
2. Set the P8 or P9 battery jumper on the RCTU to
the "ON" position.
The RCTU PCBs are shipped from the factoty
with the battery jumper in the "OFF" position.
Ensure it is moved to the "ONposition before
installing the RCTU to protect customer
configuration information stored in the RCTU
P3, P4, RAM.
3. Ensure the RCTU has been configured for the
appropriate hardware options (i.e., RRCS
ensure
to
RKYS). Refer to Subsection 4.3.1.
The power supply must be off when installing
the RCTU PCB or damage to the board could
result.
4. Insert the RCTUA (1 or 3), RCTUB (1 or 2), BB,
RCTUD (1, 2 or 3) into the "RCTU" slot in the base
cabinet. If RCTUA3 and RSlU is installed, you
must also install a ribbon cable between them
(see Figure 4-39).
Note:
Ensure the component side of the RCTU PCB
is facing right when installing
cabinet.
5. Insert the RCTUBA or RCTUC
slot "R1 1
6. After installing the RCTU PCBs, gently pull it
outward. If the connectors are properly mated, a
slight resistance will be felt.
Control Installation
-
CAUTION !
o f
the PCB to
CAUTION !
CAUTION !
it in
the base
or 3) PCB into
4-14).
or
or
1996