Toshiba Strata Dk14, Dk40i, Dk424 Installation And Maintenance Manual

							DK40i Installation
Site Requirements
Strata DK I&M 5/993-3
DK40i Installation
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
If reserve power is to be installed for the Strata DK40i, the batteries will require a well-ventilated 
location close (within nine feet) to the DKSUB40 (the optional Toshiba-supplied battery cable is 
nine feet in length).
Table 3-1 provides a summary of the electrical and environmental characteristics
Table 3-1 Summary of Electrical/Environmental Characteristics
DK40i Primary Power
Input AC (Power Supply Specification)
AC frequency
Power
AC input current85~135VAC
50/60 Hz
DK40i - 75 watts maximum
1.8A maximum
Environmental Specifications
Operating temperature
Operating humidity
Storage temperature32~104° F (0 ~40° C)
20~80% relative humidity without condensation
-4~158° F (-20~70° C)
Power Supply
DC voltage output specification-24VDC (-25.94~-28.66VDC)
+5VDC (+4.5~+5.5VDC)
-5VDC (-4.5~-5.5VDC) - Expansion KSU only
Battery Charger Characteristics
Charger: current limiting
Nominal float voltage: 2.275 volts/cell
Charge current: 0.7 amps maximum
Battery discharge cut-off voltage: 20.5  
±0.5VDC
KSTU2, PSTU or PESU (Circuits 1 and 2)
Ring VoltageSquare wave output with high/low option jumper:
Low position 130 
± 20VDC peak-to-peak (no-load)
High position, 190 
± 25VDC peak-to-peak (no-load)
Ringing capability 2 REN maximum per circuit, high or low position
KSTU2, PSTU, or PESU modem interface 
data rate14,400 bps maximum
RSTU, RSTU2 or RDSU 
Ring Voltage 80V RMS sine wave
Ringing capability 1.5 REN per circuit, with or without Message Waiting
RSTU2 Message Waiting Voltage -90VDC/one telephone per circuit (max.)
RSTU, RSTU2, or RDSU modem interface 
data rate14,400 bps maximum
Traffic Rating Characteristics
9 CCS per station system-wide 
						

							DK40i Installation
AC Power and Grounding Requirements
3-4Strata DK I&M    5/99
AC Power and Grounding Requirements
The DK40i 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 DK40i; this ground 
must originate at the buildings main 
power distribution panel and have a solid 
connection to earth ground. (See Figure 
3-3.)
CAUTION!Lack of proper ground 
may cause improper 
operation and, in extreme 
cases, system failure.
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.
ä
To 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 100~125VAC on the other terminal 
is obtained, remove both probes from the outlet.
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.
Figure 3-3 DK40i Grounding Diagram
Power
Supply
FG
Third Wire 
AC GroundGround 1Third Wire Ground
To AC Power CordDK40i BaseKSU
A
Electrical Building 
Ground (Main Power 
Distribution Box)
Alternate Ground
Grounding Rod AC Voltage
115VAC
± 10VAC
AC Current 
1.8 amps max.
4236
4 5 
						

							DK40i Installation
KSU Mounting Considerations
Strata DK I&M 5/993-5
DK40i Installation
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 DK40i power supply (see Figure 3-3).
KSU Mounting Considerations
The Base KSU and the optional Expansion KSU are both designed to be mounted on a wall or 
other vertical surface. Toshiba recommends using method 1 or 2 (see Figure 3-4). 
Prior to Installation
1. Loosen the screws on the front cover and the side cover of the Base KSU, remove the covers 
(see Figure 3-5). Figure 3-6 on Page 3-11 details the interior.
2. Place the BATT jumper plug to the ON position.
3. Install a CO line board, either the TDDU or TCOU onto the TMAU board (see Figure 3-7).
The TCOU provides four loop start CO lines and can accommodate the Caller ID interface 
unit.
The TDDU provides four DID lines. 
4. Set CO line card switches.
TCOU: Set the TCOU PAD switches (SW400-SW475) to the appropriate position (see Figure 
3-21 on Page 3-32). The factory setting is NORMAL. If CO lines are connected to a PBX or 
are in close proximity to the central office the PAD position may be required.
TDDU: Set the TDDU PAD switches to the appropriate position. Also, set the high/low 
voltage jumper plugs as required for proper dial pulse operation. See Figure 3-22 on Page 3-
35.
5. If you are not installing a TCIU2, skip to Step 6. To install the TCIU2 (see Figure 3-20 on 
Page 3-29), align the prongs P20, P21, and P22 over P120, P121, and P122 of the TCOU and 
gently press down. Slip the plastic stand-off hook through the hole.
CAUTION!To prevent system malfunction, DO NOT install TCIU1 in the DK40i system. 
						

							DK40i Installation
KSU Mounting Considerations
3-6Strata DK I&M    5/99
6. The TCOU or TDDU cards have a green and yellow wire with a two-prong spade on the end. 
Slip the spade under the second screw from the right on the power supply (see Figure 3-7).
7. If applicable, install KSTU2 Standard Telephone Interface Unit. The KSTS2  comes pre-
installed onto the KSTU2. Then install both boards into the DK40i Base KSU (see Figures 
3-17~3-19, beginning on Page 3-26).
8. If applicable, install the K5RCU or K5RCU2 or K4RCU3 (which provides Automatic Busy 
Redial and DTMF tone detection) into the Base KSU (see “K4RCU, K5RCU or K5RCU2 
Installation” on Page 3-23). 
9. If applicable, install the KKYS (which provides built-in Auto Attendant) onto the K5RCU or 
K5RCU2 or K4RCU3. 
10. If applicable, install the TSIU Serial Interface PCB into the KSU (Figure 3-23 on Page 3-37). 
If the TSIU is used for SMDR or TTY, then the PIOU/PIOUS SMDR/TTY output is not 
active.
Testing the System’s Power Supply
If the “AC” or “DC” LEDs fail to light in Steps 1 or 3, see TPSU16 Circuit Breaker Reset 
Procedure–Case 1.
1. Plug the AC power cable into an outlet (see Figure 3-8). The “AC” LED on the power supply 
lights green. 
2. Turn ON the DC power switch for the TPSU16 power supply (see Figure 3-6). The “DC” LED 
on the power supply lights green.
3. Using a voltmeter or other device which checks voltage, measure the voltages referenced to 
frame ground (FG) at the P16 connector pins (test points) located on the motherboard. The 
voltages should fall within the ranges below. 
©Yellow-green, black, and green wires: 0V
©Two yellow wires: -27V
©Range: -25.94V~-28.66V
If the voltages do not fall within the ranges, unplug the DC power pins from the P16 connector 
and measure again at the same location; if the ranges remain unacceptable. See TPSU16 
Circuit Breaker Reset Procedure–Case 2. 
						

							DK40i Installation
KSU Mounting Considerations
Strata DK I&M 5/993-7
DK40i Installation
TPSU16 Circuit Breaker Reset Procedure
Case 1
If the AC and DC LEDs on the TPSU16 power supply in the Strata DK40i Base KSU do not light, 
even though the AC power plug is inserted into the wall outlet and the TPSU16 DC power switch 
is turned on, the AC overvoltage circuit breaker may have opened. 
ä
To reset the AC overvoltage circuit breaker
1. Remove the AC power plug from the wall outlet, turn the DC power switch OFF, and wait six 
minutes. 
2. After six minutes, insert the AC plug back into the wall outlet and turn the DC power switch 
ON. The AC and DC LEDs should turn on and the system should operate. 
If the system fails to operate, either the wall outlet is not providing AC power or the system’s 
power supply is defective.
3. If the AC power checks good, replace the power supply (see “Power Supply Removal and 
Replacement” on Page 3-19).
Case 2
If the TPSU16 power supply AC and DC LEDs light, but the system does not operate, the TPSU16 
DC output overcurrent circuit breaker may have opened because of a DC short circuit.
ä
To reset the DC output overcurrent circuit breaker
1. Turn the DC power switch OFF for 15 seconds and then turn it back on. The system will go 
back to normal operation if the overcurrent breaker resets. 
2. If the system continues to fail, press in the two -24VDC circuit breakers located on the bottom 
left corner of the TPSU16 power supply.
If, then, the system does not return to normal operation, the TPSU16 power supply may be 
defective or an optional PCB may be shorting out the TPSU16.
3. Remove all optional PCBs and the Expansion KSU to locate the short, then repeat Steps 1 and 
2 and perform the power supply test.
4. If the power supply fails the test, replace the power supply (see “Power Supply Removal and 
Replacement” on Page 3-19 for more information.). If the power supply passes the test, the 
DK40i Base KSU is probably defective. 
						

							DK40i Installation
KSU Mounting Considerations
3-8Strata DK I&M    5/99
Mounting the Base KSU
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To mount the Base KSU
1. Place the Base 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 Figure 3-6.
Make sure the location of the Base KSU meets the minimum clearance requirements specified 
in Figure 3-1 on Page 3-2.
NoteThe Base KSU AC power cord is 4 feet 5 inches long.
2. Drill holes on these marks. 
If mounting the KSU directly to a wall, align screws with studs behind the wall. If using a hard 
board between the KSU and the wall, install screws first to the hard board, and then secure the 
hard board to the wall, making certain that screws are aligned with studs.
3. Secure screws approximately two thirds of the way into the top two holes on the mounting 
surface.
4. Hang the unit from the top two screws and then secure the screws completely into the 
mounting surface. 
5. Finish securing the unit to the mounting surface by completely screwing the bottom two 
screws into the wall.
6. Ground system according to “AC Power and Grounding Requirements” on Page 3-4.
7. Connect applicable wiring (e.g., modular CO line cords, 25-pair amphenol connector cable–
see Figure 3-25 on Page 3-41) to the Base KSU and then fasten wiring to the unit with the tie 
wrap that comes with the Base KSU (see Figure 3-8 on Page 3-13). Remove amphenol 
connector clamp from plastic bag that comes with the Base KSU. Fasten the clamp to hold the 
amphenol connector. 
8. Connect Reserve batteries and plug battery cable into BATT connector of the KPSU16 power 
supply (see “Reserve Power Option” on Page 3-17).
9. If the Expansion KSU is going to be installed, refer to “Mounting the Expansion KSU” on 
Page 3-9. If not, proceed to Step 1.
10. Plug the AC power cable into an outlet and then turn ON the power supply switch.
11. Reinstall the front and side covers onto the Base KSU.
WARNING! To prevent electrical shock, make sure the power supply switch is turned OFF. 
						

							DK40i Installation
KSU Mounting Considerations
Strata DK I&M 5/993-9
DK40i Installation
Mounting the Expansion KSU
Important!For purposes of identification, the labels appear on the boxes and Expansion KSUs 
(see Table 3-2).
Table 3-2 Expansion Unit Labels
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To mount the Expansion KSU (see Figures 3-4, 3-6, 3-8~3-11)
1. Make sure the side cover is removed from the Base KSU. Turn Base KSU DC power switch 
OFF.
2. Set the Expansion KSU on the Base KSUs hinge mounts, making sure that the Expansion 
KSU sets properly in place.
3. Remove the safety lock from plastic bag that comes with the Expansion KSU. Install safety 
lock to the Base KSU as shown.
4. Pull out on the safety lock until it can no longer be moved, securing the Expansion KSU to the 
Base KSU. Do not detach the lock from the Base KSU.
5. Connect the Expansion KSU ribbon cable to the connector on the Base KSU. Close ribbon 
cable connector lock on Base KSU.
6. Connect Expansion KSU green/yellow ground wire plug (FG2) to TB1 of the Base KSU. 
(Make sure the plug locks on FG2.)
7. Making sure that the Expansion KSU is flush against the mounting surface, mark the location 
of the Expansion KSU mounting screw hole.
8. Swing the Expansion KSU away from the mounting surface, and drill a hole at the mark made 
in Step 7.
9. Install the PCBs per “Worksheet 1 – System PCB Assignment Guide” on Page 2-11 and slide 
the slot lock to the lock position.
10. Swing the Expansion KSU back to the mounting surface and secure it to the surface with a 
screw. 
11. Connect the wiring (e.g., modular CO line cords, 25-pair amphenol connector–per Chapter 8 – 
DK40i/DK424 Universal Slot PCB Wiring) to the PCBs. 
12. Fasten the wiring with Tie wraps (supplied) to the bottom of the expansion and Base KSUs.
13. Knock out the tab on the bottom of the side cover.
14. Plug the AC power cable into an outlet and then turn ON the power supply switch.
15. Install the side cover to the Expansion KSU.
DK40iDK40DK16eDK16
Expansion Unit Box LabelsDKSUBI40A DKSUB40A DKSUBT16A DKSUB16A
Expansion KSU Model No.
(expansion case bottom)Model DKSUE40A1
Strata DK40
1. Strata DK40 may appear on a label.
Model DKSUE40A
Strata DK40Model DKSUET16A
Strata DK16eModel DKSUE16
Strata DK16
WARNING! To prevent electrical shock, make sure the power supply switch is turned 
OFF. 
						

							DK40i Installation
KSU Mounting Considerations
3-10Strata DK I&M    5/99
 
Method 1Method 2
StudPlaster Board
StudPlaster
Board
Hard Board
(1/2 Inch Plywood)
Expansion
KSU
Base KSUBase KSU
Expansion
KSU
1614
Figure 3-4 KSU Wall Mounting
Base Cover
Side Cover
AC DC
POWER
Cover
Screws (6)
= 
4237
Six cover screws 
to be removed 
before mounting 
KSU
Model: DKSUBI40A
Strata DK40i
Label on edge of
Base KSU
Figure 3-5 Base KSU Exterior 
						

							DK40i Installation
KSU Mounting Considerations
Strata DK I&M 5/993-11
DK40i Installation
Figure 3-6 DK40i Base KSU Interior
FG2
POWER SUPPLY ASSEMBLYMODELINPUT: AC127V 2.2A 60 HZOUTPUT: -27.3V 2.8A. -27.3V 0.2A
V. 1A 1996-05 00001TOSHIBA CORPORATION
TPSU16A
MADE INWARNINGHazardous voltage inside!If servicing required
remove A. C. plug.
12
+-BATTPN2 12AC DC
DC  POWER
TMAU2AOFF
ON
4238
Connect Expansion
Unit TB1 TO FG2
Expansion KSU
Cable ReceptacleImportant Notice
Battery Jumper
-24 Volt Circuit
BreakersReserve Power
Battery Jack
Base Telephone
Tip/Ring and 
Relay Contact
Music-on-Hold
Input
Music-on-Hold
Sensitivity Adjustment
IMPORTANT: DKSUE16A is incompatible with this unit
DKSUET16A or DKSUE40A  is required for expansion 
						

							DK40i Installation
KSU Mounting Considerations
3-12Strata DK I&M    5/99
+
-
TCOU1A V1
TC1U2A
Optional with TCOU
(provides Caller ID)
Install a TCOU, TBSU 
or  TDDU here FG Screw
TDDU1A V1
3796
TBSU1AFS
LOS
TS
BSY FS
LOS
TS
BSY
Figure 3-7 CO Line Board Installation into DK40i Base KSU