Toshiba Strata Dk14, Dk40i, Dk424 Installation And Maintenance Manual

							DK40i/DK424 Universal Slot PCBs
PDKU2 Digital Telephone Interface Unit
Strata DK I&M    5/997-7
DK40i/DK424 Universal 
Slot PCBsPrograms 28 and 29: Digital Direct Station Selection Consoles (DDSS) assignments.
Program *29: Enables ADMs on 2000-series digital telephones.
Program 27: Adjusts initial off-hook volume level for digital telephone handsets.
Programs 30, 31: Enables OCA.
Programs 77-1, 77-2, 79, *79: Digital Door Phone/Lock Control Unit (DDCB) and door phone 
ringing assignments.
Program 92-5: Initializes initial ringing, speaker, and muted ring volume levels of digital 
telephones.
Backplane Connector
50-Pin Female Amphenol Connector 
1371
Figure 7-2 PDKU2 PCB 
						

							DK40i/DK424 Universal Slot PCBs
PDKU2 Digital Telephone Interface Unit
7-8Strata DK I&M    5/99
PEKU
Electronic Telephone Interface Unit
System:DK40i Expansion KSU, DK424
Circuits per PCB:eight electronic telephone circuits
Interfaces with:electronic telephones
HDSS console (circuits 7 and 8 only–each console requires two circuits)
alternate BGM source (circuit 3 only)
EOCU PCB for OCA
external conference amplifier (circuits 2 and 3 only–ports 09 and 10, 17 and 18, 25 and 
26, 33 and 34–each amplifier requires two circuits)
HDCB (circuit 5 only–ports 004, 012, 020, and 028)
Older Version(s):none
PEKU controls and interface connectors are shown in Figure 7-4 and described in Table 7-2.
Speaker Off-hook Call Announce Unit (EOCU) Installation onto the PEKU  
(Internal Option)
NotePEKU connectors P10, P20, P40, P50, and P60 are positioned to allow installation of the 
EOCU only in the proper position (Figure 7-3).
1. Mate EOCU connectors J10, J20, J40, J50, and 
J60 with PEKU connectors P10, P20, P40, P50, 
and P60.
2. Apply firm, even pressure to EOCU to ensure 
proper mating of connectors.
3. Use a three-pair cable for making connections 
between the PEKU and the speaker OCA 
electronic telephone. 
4. Refer to “Electronic Telephone Upgrades” on 
Page 9-16 for procedures to upgrade electronic 
telephones for Speaker OCA.
NoteElectronic telephones do not support handset 
OCA.
External Options
NoteRefer to Chapter 9 – Station Apparatus and Chapter 10 – Peripheral Installation for 
installation of electronic telephones (including the following upgrades: HVSU2 or HVSU, 
HVSI for Off-hook Call Announce and HHEU for headset and/or loud ringing bell 
interface) and external options, respectively.
PEKU Configuration to Support an HDSS Console Option
1. Set the SW1 switch to DSS.
2. See “HDSS Console” on Page 9-21 for console installation instructions. Each HDSS console 
requires dedicated use of circuits 7 and 8 of a particular PEKU PCB.
J60
J50J40
J20 J10
1373
Figure 7-3 Off-Hook Call Announce 
Unit (EOCU) Installation 
						

							DK40i/DK424 Universal Slot PCBs
PDKU2 Digital Telephone Interface Unit
Strata DK I&M    5/997-9
DK40i/DK424 Universal 
Slot PCBsPEKU Configuration to Support Door Phone/Lock Control Unit (HDCB)
1. Cut the W9 Door Phone jumper wire on the PEKU PCB.
2. Refer to “Door Phone (MDFB)” on Page 9-22 for HDCB, associated Door Phones (MDFBs) 
and door lock control installation procedures. Only circuit 5 of a PEKU associated with ports 
004, 012, 020, and 028 can support HDCBs.
PEKU Configuration to Support Separate BGM Source Connection
1. Cut the W5 (BGM) jumper wire on the PEKU PCB.
2. Refer to Chapter 10 – Peripheral Installation for installation procedures for BGM connection. 
Only circuit 3 can support a BGM source.
3. In Program 10-2, set LED 09 on to enable the PEKU (Port 002) BGM source to be sent to 
digital and electronic telephone speakers and/or PIOU2, PIOUS2, PEPU PCBs.
4. Use Program 19 to identify the slot in which the PEKU supporting the BGM source will be 
installed.
PEKU Installation
1. Make sure the PEKU has been configured for the appropriate hardware options. See previous 
pages for more information.
2. Insert the PEKU (component side facing right) into the appropriate slot, and apply firm, even 
pressure to ensure proper mating of connectors. (For DK40i, the PEKU can be installed only 
in place of the RSTU2, PDKU, or RDSU. See Chapter 2 – DK40i Configuration.)
3. After installing the PEKU, gently pull the PCB outward. If the connectors are properly mated, 
a slight resistance will be felt.
PEKU Programming
Program 03: Door phones, the BGM source connection, and external amplifiers do not require a 
special code.
ä
Specify Code 21 to indicate a non-optioned station line PEKU.
ä
Specify Code 22 to indicate a PEKU configured for Speaker OCA.
ä
Specify Code 23 to indicate a PEKU configured for an HDSS console.
ä
Specify Code 24 to indicate a PEKU configured for Speaker OCA and an HDSS console.
NoteIf there are no PEKU options, Program 03 can be skipped, and Program 91 can be run 
instead.
Programs 10-2 and 19: BGM connection.
Programs 10-3: Assigns external amplifiers to ports.
Programs 28 and 29: HDSS console assignments.
Programs 77-1, 77-2, 79: HDCB and door phone ringing assignments. 
						

							DK40i/DK424 Universal Slot PCBs
PDKU2 Digital Telephone Interface Unit
7-10Strata DK I&M    5/99
Table 7-2 PEKU Controls, Indicators, and Connectors
Control/Indicator/ConnectorType of ComponentDescription
Off-hook call announce P10
10-pin connectorInterface connector for optional Off-hook Call 
Announce subassembly connector (used with 
P20, P40, P50, and P60).
Off-hook call announce P20 Used with P10, P40, P50, and P60.
Off-hook call announce P40 Used with P10, P20, P50, and P60.
Off-hook call announce P50 Used with P10, P20, P40, and P60.
Off-hook call announce P60Interface connector for optional Off-hook Call 
Announce subassembly connector (used with 
P10, P20, P40, and P50).
DSS/EKT HDSS Console/
Electronic Telephone SW1 Switch2-position slide switchConfigures PEKU for operation with an HDSS 
console or electronic telephones.
Door phone W9 jumper wire
White jumper wireWhen cut, configures PEKU for installation of 
an optional HDCB.
BGM source connection W5 
jumper wireWhen cut, configures PEKU for BGM source 
connection. 
Backplane Connector
SW1
50-Pin Amphenol Connector (Female)
EKT
DSS
W9, cut for HDCB option
W5, cut for BGM option P20 P60
P50
P40P10
1372
Figure 7-4 PEKU PCB 
						

							DK40i/DK424 Universal Slot PCBs
PEPU2 External Page Interface Unit
Strata DK I&M    5/997-11
DK40i/DK424 Universal 
Slot PCBsPEPU2
External Page Interface Unit
System:DK40i Expansion KSU, DK424
Circuits per PCB:(see interfaces)
Interfaces with:built-in paging amplifier or page speaker
door lock control
external amplifier control
external paging 600 ohm (duplex) interface (one zone)
MOH control
night relay control
Older Version(s):none
The PEPU is similar to the PIOU2 and PIOUS2, but supports fewer peripherals than both PCBs. 
PEPU controls, indicators, and interface connectors are illustrated in Figure 7-5 and described in 
Table 7-3.
PEPU does not support the following PIOU2 and PIOUS2 options:
©Alarm sensor
©Four-zone page
©SMDR port
©Remote maintenance modem or ASCII terminal connector
©IMDU connection
NoteRefer to Chapter 10 – Peripheral Installation and Chapter 8 – DK40i/DK424 Universal 
Slot PCB Wiring for installation of external options.
PEPU2 Installation
1. Make sure P15 is in the Mu Law position for U.S. and Canada.
2. Ensure the PEPU2 has been configured for the appropriate hardware options. (Refer to 
Chapter 10 – Peripheral Installation.)
3. Insert the PEPU2 (component side facing right) into the last slot (S16) of the Base KSU/
cabinet if the system has only a Base KSU/cabinet and no Expansion KSUs/cabinets. If there 
are Expansion KSU/cabinets, install the PEPU2 in the highest slot number of the highest 
numbered KSU/cabinet. Apply firm, even pressure to ensure proper mating of connectors.
4. After installing the PEPU2, gently pull the PCB outward. If the connectors are properly mated, 
a slight resistance is felt.
PEPU2 Programming
Program 03: Specify Code 41 for the slot that will support a PEPU.
Program 10-2: Activates External Page with All Call Page (with access code 
 only, not with 
$OO&DOO3DJH button).
Program 77-1: Assigns relay control options.
Program 78: Sets Night Ringing over External Page. 
						

							DK40i/DK424 Universal Slot PCBs
PEPU2 External Page Interface Unit
7-12Strata DK I&M    5/99
 
 
Table 7-3 PEPU Controls, Indicators, and Connectors
Control/Indicator/ConnectorType of ComponentDescription
M/B make/break jumper plug P10
3-terminal jumper plugExternal page/door lock control relay make or 
break jumper plug.
M/B make/break jumper plug P11 Night/hold relay make or break jumper plug.
SPI/SPO internal/external 
amplifier switch SW42-position slide switchSelects built-in 3-watt amplifier (SPI) or 600-
ohm output (SPO) for external page/BGM 
operation.
Volume control VR1 Trim potentiometer Adjusts volume of built-in 3-watt amplifier.
Backplane Connector
50-Pin Female Amphenol Connector
SPO
BBSPIMM
SW4
P11P10
VR1
1390
Figure 7-5 PEPU PCB 
						

							DK40i/DK424 Universal Slot PCBs
PEPU2 External Page Interface Unit
Strata DK I&M    5/997-13
DK40i/DK424 Universal 
Slot PCBsPESU
Standard/Electronic Telephone Interface Unit
System:DK40i Expansion KSU, DK424
Circuits per PCB:two standard telephone or two-wire device circuits (circuits 1,2)/
four electronic telephone circuits (circuits 5~8)
Interfaces with:standard telephone circuits
standard telephones
voice mail ports
off-premises stations
alternate BGM source
auto attendant digital announcer
electronic telephone circuits
electronic telephones
alternate BGM source (circuit 8 only)
EOCU PCB for OCA
HDCB (circuit 5 only–ports 004, 012, 020, and 028)
external conference amplifier
Older Version(s):none
The PESU provides a ring generator that can be set for either 130V P-P or 190V P-P for the two 
standard interface circuits. PESU circuits 3 and 4 are nonfunctional, but they are each assigned a 
port in system programming.
NoteFor the system to recognize the DTMF tones generated by a standard telephone (or any 
other device connected to a standard telephone port), a DTMF receiver unit (RRCS4, 8, or 
12) must be installed on the DK40i K4RCU3 or the DK424 common control unit.
PESU controls and interface connectors are shown in Figure 7-6 and described in Ta b l e  7 - 4.
DK40i General Information
The PESU must be installed in the DK40i Expansion KSU in place of RDSU, RSTU or PDKU. 
See Chapter 2 – DK40i Configuration.
CAUTION!To prevent system malfunction, DO NOT install the PESU in slot 18 of the 
DK40i system.
Installing the Speaker Off-hook Call Announce Unit (EOCU) (Internal Option)
1. Mate the EOCU connectors J10, J20, J40, J50, and J60 (Figure 7-6) with the PESU connectors 
P10, P20, P40, P50, and P60.
NotePESU connectors P10, P20, P40, P50, and P60 are positioned to allow installation of the 
EOCU only in the proper position.
2. Apply firm, even pressure to the EOCU to ensure proper mating of connectors.
3. Use three-pair cable for connecting the PESU and the Speaker OCA electronic telephone. 
Refer to Chapter 8 – DK40i/DK424 Universal Slot PCB Wiring for wiring/ interconnecting 
details. 
						

							DK40i/DK424 Universal Slot PCBs
PEPU2 External Page Interface Unit
7-14Strata DK I&M    5/99
4. See “PDIU-DI Installation into 1000-series Digital Telephone” on Page 9-9 for procedures to 
add required speaker OCA upgrade to electronic telephones.
External Options
NoteRefer to Chapter 9 – Station Apparatus to connect electronic telephones (including the 
following upgrades: HVSU2 or HVSU/HVSI for Off-hook Call Announce and HHEU for 
headset and/or Loud Ringing Bell interface), standard telephones, and HDCBs to the 
PESU. See Chapter 10 – Peripheral Installation to connect peripherals.
PESU Configuration to Support Door Phone/Lock Control Unit (HDCB)
1. Cut the W9 door phone jumper wire on the PESU PCB.
2. See “Door Phone/Lock Programming” on Page 9-24 for installation procedures for the HDCB 
and associated door phones (MDFBs) and door lock control.
3. Each HDCB requires dedicated use of circuit 5 of a particular PESU PCB.
PESU Configuration to Support Background Music (BGM) Source
1. Cut the W7 (BGM) jumper wire on the PESU.
2. Refer to Chapter 10 – Peripheral Installation for BGM installation procedures.
PESU Configuration for Square Wave Ring Generator
ä
Ensure the P90 jumper plug is set to the “H” (190V P-P) position for initial installation. The 
“L” (130V P-P) position is used if devices connected to the PSTU1 or PSTU2 experience ring 
trip.
PESU Installation
1. Make sure that the PESU subunit (ESTS) is securely attached to the PESU (Figure 7-6).
2. Ensure the PESU has been configured for the appropriate hardware options. “PESU Controls, 
Indicators, and Connectors” on Page 7-15.
3. Insert the PESU into the appropriate slot, and apply firm, even pressure to ensure proper 
mating of connectors.
CAUTION!To prevent system malfunction, DO NOT install the PESU in slot 18 of the 
DK40i system.
4. After installing the PESU, gently pull it outward. If the connectors are properly mated, a slight 
resistance will be felt.
WARNING! The protective shield on the back of the PESU is designed to protect the 
installer from potentially hazardous ring voltage. Do not remove this 
shield. 
						

							DK40i/DK424 Universal Slot PCBs
PEPU2 External Page Interface Unit
Strata DK I&M    5/997-15
DK40i/DK424 Universal 
Slot PCBsPESU Programming
Enter Code 25 in Program 03 for a non-optioned PESU or Code 26 for a PESU supporting Off-
hook Call Announce. To program the PESU standard telephone ports, see “PESU Programming” 
on Page 7-15. To program the PESU electronic telephone ports, see “PESU Programming” on 
Page 7-15. If there are no PESU options, skip Program 03 and run Program 91 instead. 
Table 7-4 PESU Controls, Indicators, and Connectors
Control/Indicator/ConnectorType of ComponentDescription
Off-hook call announce P10
10-pin connectorInterface connector for optional Off-hook Call 
Announce subassembly connector (used with 
P20, P40, P50, and P60).
Off-hook call announce P20 Used with P10, P40, P50, and P60.
Off-hook call announce P40 Used with P10, P20, P50, and P60.
Off-hook call announce P50 Used with P10, P20, P40, and P60.
Off-hook call announce P60 Used with P10, P20, P40, and P50.
Ring voltage jumper plug P90 3-terminal jumperSets ring generator voltage level for circuits 1 
and 2.
H=190V P-P (factory setting)
L=130V P-P
Door phone W9 jumper wire
White jumper wireWhen cut, configures PESU, circuit 5 for 
installation of an optional HDCB.
BGM W7 jumper packWhen cut, configures PESU, port 07, circuit 8, 
for BGM source connection (slot 01 only with 
PCTU2 and PCTU1). 
						

							DK40i/DK424 Universal Slot PCBs
PEPU2 External Page Interface Unit
7-16Strata DK I&M    5/99
Up
PESU
P60
P50 P40
W9
P10
P20
ESTS
P70 P80Optional
EOCU, Equip.
for OCA
Feature
Backplane 
Connector
ESTS:  Standard Telephone
Interface, Always Equipped
From Factory Ring Voltage Option (Ports 1 & 2):
L = Low Level (130V P-P)
H = High Level (190V P-P) 50-Pin 
Amphenol
Connector
(Female)
P90 LH
Note   
Connect two ringers maximum per port (H or L).
Cut W9 for 
Door Phone
Option (HDCB
on Circuit 5)
PESU
W7Cut W7 Only if BGM Is Connected to 
Port 07, Circuit 8
1378
Figure 7-6 PESU PCB