Bcu Installation - Toshiba DK14 Installation And Maintenance Manual

DK424i Installation
Step 6: BCU Processor PCBs

BCU Installation

CAUTION!
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1. Set the battery jumper, "BATT", on the B1CU, B2CAU/B2CBU, B3CAU/B3CBU or B5CBU,
to the "On" position (see
2. Ensure the BCU has been configured for the appropriate hardware options (i.e., BRCS or
RKYS). See
3. Insert the B1CU, B2CBU,
B3CBU, or B5CBU (1, 2 or 3)
into the "B101" slot in the
Base Cabinet. If B1CU and
RSIU is installed, you must
also install a ribbon cable
between them
Ensure the component side of
the BCU PCB is facing right
when installing it in the Base
Cabinet.
4. Insert the B2CAU, B3CAU, or
B5CAU PCB into slot B102.
5. After installing the BCU
PCBs, gently pull it outward.
If the connectors are properly
mated, a slight resistance will
be felt.
6. Connect the supplied ribbon
cables between B1CU,
B2CAU/B2CBU, B3CAU/
B3CBU and B5CAU/B5CBU
and RSIU, if installed.
Note
7-44
Do not remove the plastic insulation shield from the back of the BCU PCB. If the
shield comes off, do not allow the back of the PCB to contact metal.
The BCU PCBs are shipped from the factory with the battery jumper in the "Off"
position. Ensure it is moved to the "On" position before installing the BCU to protect
customer configuration information stored in the BCU RAM.
The power supply must be off when installing the BCU PCB or damage to the board
could result.
Figures 7-26~7-32
"Internal Hardware Options"
(Figure 7-25).
Do not adjust the C14 or
C15 trimmer capacitor.
The capacitor is factory-
calibrated.
and Tables 7-13~7-19).
on Page 7-42.
Two-connector
ribbon cable
(supplied with
RCTU)
Three-connector
ribbon cable
(supplied with
RSIU)
Slot
B101
B2CAU,
B3CAU or
B5CAU
B1CU (see Note),
B2CBU, B3CBU
or B5CBU
Note: B1CU doesn't use 2-connector ribbon;
There is no partner processor PCB.
Figure 7-25 Processor PCB Connectors and RSIU Placement
Port 1
Port 2
Port 3
Port 4
B102 S_01 S_02 S_03
5240
RSIU
RSIS or
PDKU or
RMDS PEKU
Strata DK I&M 5/00