Nitsuko 24i/28i/124i/384i Hardware Manual

PCB INSTALLATION
2. PCB Installation
and Startup
2-8
CPRU Installation (Figures 2-3 through 2-7)
1. Install the battery on the CPRU using the tie wrap.
2. Connect the battery to the BAT connector with the red wire
up (Figure 2-3).
3. Insert the CPRU into the CPU slot in the Main Cabinet
(Figure 2-4).
Figure 2-3  CPRU BATTERY INSTALLATION4. Set the MOH jumper for internal/external MOH source (Figure
2-5). Use the HTVR potentiometer to adjust MOH volume.
Note:When the S jumper is set for internal MOH, and...

2. PCB Installation
and Startup2-9
PCB INSTALLATION
5. Set DIP switch 1 ONfor system data and customer program-
ming data loaded from the disk.  Set DIP switch 1 OFFfor
system data from disk and customer programming data
loaded from RAM.
Figure 2-5  SETTING MOH SOURCE
AND SYSTEM DATA SOURCE6. Insert the software disk into the disk drive (Figure 2-6).
7. Install the 10-pin to 16-pin filter cable after 48FU installation.
Figure 2-6  INSTALLING THE SYSTEM DISK
92000 - 13
INT
INTEXT
EXTONOFF
12
ON - Cold...

PCB INSTALLATION
2. PCB Installation
and Startup
2-10
16DSTU Description
The 16DSTU PCB provides:
- 16 digital extension circuits
- 16 extension status LEDs
- One 16-pin connector(s) for 48FU filter unit connection
- One PCB status LED
- One run/block switch
16DSTU Installation(Figure 2-7)
To install a 16DSTU PCB:
1. Set the run/block switch DOWN.
2. Install the 16DSTU into a slot.
3. Install the 16-pin filter cable(s) after 48FU installation.
4. Set the 16DSTU run/block switch UP.
Figure 2-7  16DSTU...

2. PCB Installation
and Startup2-11
PCB INSTALLATION
8ASTU/16ASTU Description
The ASTU PCB provides:
- 8/16 analog extension circuits
- 8/16 extension status LEDs
- one/two 16-pin connectors for 48FU filter unit connection
- one PCB status LED
- one run/block switch
8ASTU/16ASTU Installation (Figure 2-8)
1. Set the run/block switch DOWN.
2. Install the ASTU into the slot.
3. Install the 16-pin filter cable(s) after 48FU installation.
4. Set the ASTUs run/block switch UP.
Figure 2-8  ASTU INSTALLATION...

PCB INSTALLATION
2. PCB Installation
and Startup
2-12
8ATRU-LS1 Description
The 8ATRU-LS1 PCB provides:
- 8 analog loop start line/trunk circuits
- 8 trunk status LEDs
- Six 2/3 pin jumpers for ground start or PF operation
- One 16-pin connector for 24FU filter unit connection
- One PCB status LED
- One run/block switch
8ATRU-LS1 Installation (Figure 2-9)
Note:Refer to instructions for the GSAU (ground start) or
PFTU (power failure) PCBs if either is required before
installing the 8ATRU.
1. Set the...

2. PCB Installation
and Startup2-13
PCB INSTALLATION
8GSAU Description
The GSAU PCB provides 8 analog ground start line/trunk
circuits.
Note:When a GSAU PCB is installed, loop start operation and
PF operation cannot be used.
8GSAU Installation(Figures 2-10 and 2-11)
1. If the 8ATRU-LS1 is installed: Set the 8ATRU-LS1
run/block switch UP, remove the 16-pin filter cable(s) from
the 8ATRU-LS1, and remove the PCB from the cabinet.
2. Remove all six jumpers from connectors CN4 and CN5 from
the 8ATRU-LS1....

PCB INSTALLATION
2. PCB Installation
and Startup
2-14
8GSAU Installation (cont’d)
3. Install the GSAU on the 8ATRU-LS1.  GSAU jumper J1
(female) plugs into 8ATRU-LS1 CN4 (male).  GSAU
jumper J2 (female) plugs into 8ATRU-LS1 CN5 (male).
GSAU jumper J3 (male) plugs into 8ATRU-LS1 CN3
(female).
4. Install the 8ATRU-LS1 into a PCB slot.
5. Set the run/block switch UP.
6. Install the filter cable to the 24FU.
Figure 2-11 INSTALLING THE GSAU
92000 - 22A
CN1RUN
BLK
Circuits for
Trunks 1-88ATRU
Status LED...

2. PCB Installation
and Startup2-15
PCB INSTALLATION
4ATRU-LD1 Direct Inward Dial (DID) PCB
Description
The 4ATRU-LD1 DID Trunk PCB provides:
- 4 DID trunk circuits
- 4 DID trunk status LEDs
- One 16-pin connector for 24FU filter unit connection
- One PCB status LED
One run/block switch
4ATRU-LD1 Installation (Figure 2-12)
1. Set the run/block switchDOWN.
2. Install the 4ATRU-LD1 into a slot.
3. Install the 16-pin filter cable after 24FU installation.
4. Set the run/block switch UP.
Figure 2-12...

PCB INSTALLATION
2. PCB Installation
and Startup
2-16
4ATRU-EMI Tie Line PCB Description
The 4ATRU-EMI Tie Line PCB provides:
- 4 Tie line circuits
- 4 Tie line status LEDs
- One 16-pin connector for 24FU filter unit connection
- One PCB status LED
- One run/block switch
4ATRU-EMI Installation (Figure 2-13)
1. Set the run/block switch DOWN.
2. Install the 4ATRU-EMI into a slot.
3. Install the 16-pin filter cable after 24FU installation.
4. Set the run/block switch UP.
Figure 2-13  4ATRU-EMI TIE LINE PCB...

2. PCB Installation
and Startup2-17
PCB INSTALLATION
4PGDU Description
- 8 alarm/fax sensors
- 4 external page or door box circuits
- 4 potentiometers for External Page/Door Box volume
control
- 4 switches to determine page/door box circuit function
- 4 dedicated dry relay contacts for page/door box operation
- Two 16-pin connectors for 48FU filter unit connection
- One PCB status LED
4PGDU Installation (Figure 2-14)
1. Set switches SW1-4 according to circuit type required.
Note:Dip switches are read top...