Toshiba Strata Dk14, Dk40i, Dk424 Installation And Maintenance Manual

							Introduction
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							Introduction
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xxStrata DK I&M    5/99
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							Strata DK I&M 5/991-1
DK14 InstallationDK14 Installation1
This chapter explains how to install the Strata DK14 system. It includes information on site 
requirements, wiring diagrams, and step-by-step instructions on how to install the unit(s), the 
ground wiring, AC power cabling, reserve power (battery backup) cabling, and PCB cabling.
Inspection
1. When the system is received, examine all packages carefully and note any visible damage. If 
any damage is found, do not open the packages. Contact the delivery carrier immediately and 
make the proper claims.
2. After unpacking (and before installing), check the system against the packing list and inspect 
all equipment for damage. If equipment is missing or damaged, contact your supplier 
immediately.
3. Be sure to retain original packaging materials for re-use when storing or transporting system 
hardware.
Packaging and Storage
CAUTION!When handling (installing, removing, examining) PCBs, do not touch the back 
(soldered) side or edge connector. Always hold the PCB by its edges.
äWhen packaging and storing the system, remove PCBs from the system cabinet (the power 
supply may remain installed in the cabinet for storage and shipment). PCBs should be 
packaged in their original antistatic bags for protection against electrostatic discharge. Be sure 
to package equipment in its original shipping containers.
Site Requirements
This section defines the installation site requirements necessary to ensure a proper operating 
environment for the DK14. Also included are grounding requirements. (Ta b l e  1 -1 for electrical/
environmental characteristics.) 
						

							DK14 Installation
Site Requirements
1-2Strata DK I&M    5/99
Input Power
The system requires an input power source of 115VAC ± 10VAC, 50/60 Hz, 10 amps. The AC 
outlet is recommended to be dedicated and unswitched, with a solid third-wire ground. (See “AC 
Power and Grounding Requirements” on Page 1-3 for details).
This is to eliminate interference from branch circuit motor noise or the like, and to prevent 
accidental power-off. To avoid accidental power turn-off, Toshiba recommends that you do not use 
an ON/OFF wall switch on this dedicated AC circuit.
For the DK14, a reserve power source (two customer-supplied 12-volt batteries) may be connected 
to the system to serve as a power failure backup.
Clearance and Location
The minimum clearance requirements for the DK14 
KSU are shown in Figure 1-1. The HPFB should be 
mounted directly above the D14 KSU.
Consider the following conditions when selecting a 
location for the KSU(s):
The location must be:
©Dry and clean
©Well ventilated
©Well illuminated
©Easily accessible
The location must not be:
©Subject to extreme heat or cold
©Subject to corrosive fumes, dust, or other 
airborne contaminants
©Subject to excessive vibration
©Next to television, radio, office automation, or 
high frequency equipment
2
2 16.4
Front View
Top View
3
3 Front Clearance Wall
2
DK14 KSUHPFB
2
2 10
2399
Figure 1-1 DK14 KSU Clearance 
Requirements 
						

							DK14 Installation
AC Power and Grounding Requirements
Strata DK I&M 5/991-3
DK14 Installation
AC Power and Grounding Requirements
The DK14 requires a solid earth ground 
for proper operation. The AC power cord 
contains a conductor for the “third-wire 
ground” provided by the commercial 
power outlet. 
The third-wire ground should be the only 
ground necessary for the DK14; this 
ground must originate at the buildings 
main power distribution panel and have a 
solid connection to earth ground. (See 
Figure 1-2.)
AC Voltage Range:
©115VAC ± 10VAC
©0.7 amp. max
CAUTION!Lack of proper ground may cause improper operation and, in extreme cases, 
system failure.
Table 1-1 Summary of Electrical/Environmental Characteristics 
DK14 Primary Power
Input AC (Power Supply Specification)
AC frequency
Power
AC Current85~135VAC
50/60 Hz
75 watts maximum

						

							DK14 Installation
AC Power and Grounding Requirements
1-4Strata DK I&M    5/99
AC Power and Third-wire Ground Test
Test the “third-wire ground” for continuity by either measuring the resistance between the third 
prong terminal (earth ground) and a metal cold water pipe (maximum: 1 ohm), or by using a 
commercially available earth ground indicator. If neither procedure is possible, perform the 
following earth ground test procedure.
äTo perform the earth ground test procedure
1. Obtain a suitable voltmeter, and set it for a possible reading of up to 250VAC.
2. Connect the meter probes between the two main AC voltage terminals (white and black wires) 
on the wall outlet. The reading obtained should be between 100~125VAC.
3. Move one of the meter probes to the third terminal (green wire ground). Either the same 
reading or a reading of zero volts should be obtained.
4. If the reading is zero volts, leave one probe on the ground terminal and move the other probe 
to the second voltage terminal. 
CAUTION!If a reading of zero volts is obtained on both voltage terminals (white wire to 
green wire, black wire to green wire), the outlet is not properly grounded. Omit 
Steps 5 and 6, and see following CAUTION!
5. If a reading of zero volts on one terminal, and a reading of 105~125VAC on the other terminal 
is obtained, remove both probes from the outlet.
6. Set the meter to the “OHMS/Rx1” scale. Place one probe on the ground terminal, and the other 
probe on the terminal that produced a reading of zero volts. The reading should be less than 1 
ohm.
CAUTION!If the reading is more than one ohm, then the outlet is not adequately grounded. 
If the above tests show the outlet AC voltage is not in range or is not properly 
grounded, the condition should be corrected (per Article 250 of the National 
Electrical Code) by a qualified electrician before the system is connected.
Alternate or Additional Ground
If the “third-wire” AC ground can not practically be improved or if extreme motor noise or other 
disturbance causes system malfunction, or if local area lightning storms exist, a separate direct 
ground may be warranted.
Connect a separate earth ground from a cold water pipe or earth grounding rod directly to the FG 
screw terminal on the DK14 power supply (see Figure 1-2).
This chapter provides the instructions necessary to mount the DK14 Key Service Unit  (KSU). 
Instructions are also provided on how to remove and replace the power supply.
WARNING! Hazardous voltages that may cause death or injury are exposed during the 
following test. Use great care when working with AC power line voltage. 
						

							DK14 Installation
KSU Mounting Considerations
Strata DK I&M 5/991-5
DK14 InstallationKSU Mounting Considerations
The KSU is designed to be mounted on a wall or other vertical surface. Toshiba recommends using 
the following method.
Pre-installation
1. Loosen the screws on the front cover of the 
KSU, and remove the cover (Figure 1-3). 
2. Move the SW1 RAM Storage Battery jumper 
plug strap on the motherboard to the ON 
position (Figure 1-4).
3. If the DK14 is less than one mile from the 
central office (or PBX), set the CO line PAD 
switches, SW401 and SW451, to the PAD 
position to provide a 3db level loss to avoid 
excessive loudness. 
4. Install all optional PCBs per instructions later 
in this chapter.
Figure 1-4 DK14 Interior View
AC
DC
6.87
10
Front Cover
Screws (4)
16.3
6.7
Wall Mount
Screws (4)2361
Figure 1-3 DK14 Dimensions
J15 QRCU
J11 J14
J10 QCDU#2 QCDU#1
J9
0 PAD 3 NOR BNPAD
0 PAD 3 NOR BNPAD
SW401 SW451
QSTUJ12
QSTUJ13
VR701
J19 J21
WSIU
J20
WSIU
J2C01
J7J8
QSTU SW1
Off
On
QSTU
J16 QRCU
J3C02
FG
FG BAR
25-pair Female
Amphenol Connector
(to Station Tip/Ring
and Relay Contact)
SW451 (CO1)
SW401 (CO2):
3-db PAD
Switches for
CO Line 1 and 2
2404
Modular Jack Cover Holders
(for Storage of Modular Jack Covers)System Frame
Ground Bar DK14 Main Printed
Circuit Board
J3, CO Line 2
Modular Jack (RJ11)
J2, CO Line1
Modular Jack (RJ11) WMAU1A 
						

							DK14 Installation
KSU Mounting Considerations
1-6Strata DK I&M    5/99
Mounting the KSU
1. Make sure the power supply switch is turned OFF.
2. Place the KSU on the desired location on the mounting surface and mark the location of the 
four screw holes (there is one on each corner). See Figures 1-3 and 1-5.
3. Make sure the location of the KSU meets the minimum clearance requirements.
4. Drill holes on these marks. 
5. Secure screws approximately two thirds 
of the way into the top two holes on the 
mounting surface.
6. Hang the unit from the top two screws 
and then secure the screws completely 
into the mounting surface.
7. Finish securing the unit to the mounting 
surface by completely screwing the 
bottom two screws into the wall.
8. Ground system according to previous 
“AC Power and Grounding 
Requirements” on Page 1-3 instructions.
9. Connect applicable wiring (modular CO 
line cords, 25-pair amphenol connector 
cable, etc.) to the KSU. Route the wiring 
as shown in Figure 1-6, and then fasten 
wiring to the unit with the tie wraps that 
come with the KSU. (See Figures 
1-16~1-18 for additional wiring details.)
NoteFigure 1-6 shows cables routed to 
the right; they may also be routed to 
the left, depending on the location of 
the MDF.
10. If the Reserve Power Battery and Charger (HPFB) is going to be installed, refer to the 
following section. If not, proceed to Step 11.
11. Plug the AC power cable into an outlet and then turn ON the DC power supply switch.
12. Reinstall the front cover onto the KSU.
Stud
PlasterboardHard Board
(1/4 inch plywood)
DK14 KSU 
2360
Figure 1-5 DK14 KSU Wall Mount Method 
						

							DK14 Installation
Reserve Power Battery
Strata DK I&M 5/991-7
DK14 Installation
Reserve Power Battery
A second HPFB can be installed directly above the unit to supply backup reserve power.
äTo install the Reserve Power Battery and Charger (HPFB)
1. Place the HPFB directly above the DK14 KSU (Figure 1-7).
2. Mark the location of the two screw holes, then drill holes.
3. Screw the two screws two-thirds into the mounting surface.
4. Hang the HFPU on the screws then tighten the screws into the mounting surface.
5. Plug the first HPFB connector into BATT connector on the right side of the KSU.
6.Connect a ground wire from the HPFB “FG” screw to the DK14 QPSU8 screw labeled 
“HPFB6.” The ground wire can be fed through the opening by the AC power cord. 
NoteThe DK14 should be plugged into AC power and the DC power switch should be turned 
ON. The HFPU will not start to operate if AC power is not available during the initial 
installation.
7. The 24VDC LED on the HPFB should light. If it does not light, press the battery OFF switch 
with a pencil point or other small-tipped object.
O —AC Power Cord 
and Plug 4 7
Station 
Tip/Ring 
Amphenol 
25-pair Jack 
(female)
Left Side ViewRight Side View
RJ11 CO 
Line Jacks
RS-232 
Interface 
Jacks, TTY, 
Caller ID, 
SMDR
DC ON/OFF
Power Switch
Reserve 
Battery (HPFB) 
Connector
RJ11 Power 
Failure 
Transfer Jack
BATT
DC
SI01 SI02
Tie-wrap supplied 
to Hold Amphenol 
Connector
CO4
CO2
CO1
CO3
PFT
To HPFB FG 
Screw
3
2397
Tie-wrap Holder
Tie-wrap 
Holder
Figure 1-6 DK14 Side View and Jack Locations 
						

							DK14 Installation
Power Supply Removal and Replacement
1-8Strata DK I&M    5/99
8. Dress and tie-wrap the HPFB cables.
9. To mount a second HPFB, repeat Steps 1~4, then plug the second HPFB connector in the first 
HPFB and connect an FG wire between each HPFB FG screw.
10. To test the HPFB, remove the DK14 AC plug from the AC outlet. The DK14 AC LED will go 
out, but the DK14 DC LED remains on. Also the system remains in normal working order and 
the HPFB 24V LED remains on.
11. If it is desired to turn off the HPFB (after loss of AC power), use a pencil or other sharp object 
to press the Battery OFF switch. 
CAUTION!Once the HPFB is turned OFF or unplugged (during AC power loss) it will not 
operate again until AC power is restored to the DK14 KSU.
Power Supply Removal and Replacement
The power supply comes factory-installed in the KSU; if necessary, it can be removed and 
replaced.
Power Supply Removal
1. Make sure that the power supply switch is OFF and that the AC power cable is not plugged 
into an outlet. Confirm that green AC LED is not lit. See Figure 1-8.
2. Loosen the screws on the front cover of the KSU, and remove the cover.
3. Unplug HPFB cable from BATT connector of power supply and disconnect the HPFB ground 
wire.
AC
DC
AC Power 
Cord/Plug 4 7To Second HPFB (optional)
Second HPFB 
Connector
FG Screw 
Tie-wrap
Note
Do not run power cables with 
station and CO line cables.DC Power Switch Tie-wrap
Battery Connector HPFB Unit: 
Reserve Power Battery 
and Charger (optional)
HPFB FG Wire
2403
Figure 1-7 DK14 Reserve Power Installation