Kcou Removal And Replacement; General; Kcou Removal; Kcou Replacement - Toshiba Strata DK 16 Installation And Maintenance Manual

16 KCOU REMOVAL AND
REPLACEMENT

16.00 General

16.01 The KCOU comes factory-installed in the
Base Key Service Unit (Figure 5-3); if necessary,
it can be removed and replaced.

16.10 KCOU Removal

1) Make sure the Power Supply (KPSU16) DC
power switch is turned off.
2) Loosen and remove screws 1 and 2 (Figure
5-23).
3) Pull back plastic stand-off tab and pull up on
KCOU until P7 is unplugged.
4) Pull wires on P6 and remove P6 connector
from Base Unit.
SCREW (1)
BASE UNIT
MOTHERBOARD
FIGURE 5-23

KCOU PCB

16.20 KCOU Replacement

1) Make sure the Power Supply (KPSU16) DC
2) Mate and connect KCOU P6 cable connector
3) Position KCOU as shown in Figure 5-23.
4) Mate and connect KCOU P7 to P7 on the Base
5) Secure plastic stand-off tab and install screws
6) Set SW400 ~ 475 to appropriate position. In
KRCU
P2A
KCOU
KCOU
P7
SW400 FOR CO1
SW425 FOR CO2
SW450 FOR CO3
SW475 FOR CO4
5-35
INSTALLATION-DK 16 KSU & PCB
power switch is off.
to P6 on Base Unit motherboard so that the
red wire is aligned as shown in Figure 5-23.
Unit motherboard.
1 and 2.
most cases set to the normal position (NOR);
if CO lines are connected to a PBX or are in
close proximity to the Central Office, set to the
PAD position to provide a 3 db loss in signal
level.
SCREW (2)
P2B
RED RED
PLASTIC STAND-OFF
(TAB)
SECTION 100-816-205
MARCH 1993
J4 (CO4)
J3 (CO4)
J2 (CO4)
J1 (CO4)