DOWNLOAD Panasonic KX-NS0290CE Service Manual ↓ Size: 1.85 MB | Pages: 46 in PDF or view online for FREE

Model
KX-NS0290CE
Pages
46
Size
1.85 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / PRI30 CARD
File
kx-ns0290ce.pdf
Date

Panasonic KX-NS0290CE Service Manual ▷ View online

3
KX-NS0290CE
1 Safety Precautions
1. Before servicing, unplug the AC power cord to prevent an electric shock.
2. When replacing parts, use only the manufacturer's recommended components.
3. Check the condition of the power cord. Replace if wear or damage is evident.
4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.
5. Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent
the customer from being exposed to shock hazards.
1.1.
For Service Technicians 
• Repair service shall be provided in accordance with repair technology information such as service manual so as to prevent fires,
injury or electric shock, which can be caused by improper repair work.
1. When repair services are provided, neither the products nor their parts or members shall be remodeled.
2. If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced.
3. FASTON terminals shall be plugged straight in and unplugged straight out.
• ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
1. Cover plastic parts boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on worktable.
4. Do not grasp IC or LSI pins with bare fingers.
4
KX-NS0290CE
2 Warning
2.1.
About Lead Free Solder (PbF: Pb free)
Note:
In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that con-
tains lead.
We will use PbF when discussing the lead free solder used in our manufacturing process which is made from Tin, (Sn), Silver,
(Ag), and Copper, (Cu).
This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair
work we suggest using the same type of solder. 
Caution
• PbF solder has a melting point that is 50
° ~ 70° F, (30° ~ 40°C) higher than Pb solder. Please use a soldering iron with tempera-
ture control and adjust it to 700
° ± 20° F, (370° ± 10°C). 
Exercise care while using higher temperature soldering irons.:
Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB.
• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100
°F, (600°C).
• When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the
opposite side (See figure, below).
5
KX-NS0290CE
2.1.1.
Suggested PbF Solder
There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper,
(Sn+Ag+Cu), you can also use Tin and Copper, (Sn+Cu), or Tin, Zinc, and Bismuth, (Sn+Zn+Bi). Please check the manufac
turer's specific instructions for the melting points of their products and any precautions for using their product with other 
materials. 
The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3mm, 0.6mm and 1.0mm.
2.2.
Discarding of P. C. Board
When discarding P. C. Board, delete all personal information such as telephone directory and caller list or scrap P. C. Board.
6
KX-NS0290CE
3 Specifications
PRI BLOCK
SLT BLOCK
PRI I/F
NUMBER OF PORT
PRI30 : 30 PORTS
Transfer rate
PRI30 : 2.048Mbit/s
Line code
PRI30 : HDB3
Framing
PRI30 : CRC-Multiframe or SMF(Sub Multiframe)
PRI FRAMER IC
Lantiq PEF2256H VER.2.2
DPLL
Build-in IC
Line i/f circuit
Main frontend parts
 Pulse trans
 Surge protector
 EMC filter
 Termination : 120
 RJ45 connecter
Line SYNC
Line SYNC clock Freq. : 2.048MHz
LED 
Status information LED : 5
SERR (RED)  OFF NORMAL / ON ALARM
RAI (RED)  OFF NORMAL / ON ALARM
AIS(RED)   OFF NORMAL / ON ALARM
SYNC(GREEN) ON/FLASH Normal
* FLASH = External Clock Master
DLK(GREEN) ON NORMAL / OFF ALARM
Line I/F connector
CO
RJ45 (Selected by SW501)
Extention
Onboard DC/DC circuit
Input : +15V
Output :  +3.3V
Self diagnosing function
Loopback test by FRAMER IC
Local Loopback function by primary Relay
EXT Interface
Number of Ports
2 Ports
Line interface circuit
2chSLIC/2chCODEC
(PEF4365T/PEB3265F) function
-52V/26mA feeding function
Dial Pulse signal detection function
DTMF signal detection function
Bell signal issuing sending
Hook detecting function
Ring trip detecting function
2w/4w converting function
CODEC function
Test function (loopback, Tone generation)
Programmable digital filtering function
Serial interface function
Caller ID(FSK)generator function
Surge protective function
EXT line interface connector
RJ45* Connector x 1
LED display circuit
None
Onboard DC/DC circuit
Input  :  +15V
Output :  +80V / -55V / +3.3V
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Panasonic KX-NS0290CE Service Manual ▷ Download

  • DOWNLOAD Panasonic KX-NS0290CE Service Manual ↓ Size: 1.85 MB | Pages: 46 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Panasonic KX-NS0290CE in PDF for free, which will help you to disassemble, recover, fix and repair Panasonic KX-NS0290CE PBX. Information contained in Panasonic KX-NS0290CE Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.