KX-NCP1280XJ - Panasonic PBX Service Manual (repair manual)

Model
KX-NCP1280XJ
Pages
41
Size
1.34 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / 2-PORT BRI CARD
File
kx-ncp1280xj.pdf
Date

View Panasonic KX-NCP1280XJ Service Manual online

ORDER NO. KMS0810583CE
2-Port BRI Card
Model No.
KX-NCP1280XJ
(for Asia, Oceania, Middle Near Esat, Africa and 
Latin America)
2
KX-NCP1280XJ
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions -----------------------------------------------3
1.1. For Service Technicians  ---------------------------------3
2 Warning --------------------------------------------------------------3
2.1. About Lead Free Solder (PbF: Pb free) --------------3
2.1.1. Suggested PbF Solder -------------------------------3
2.2. Discarding of P. C. Board --------------------------------4
3 Specifications ------------------------------------------------------5
4 Technical Descriptions
------------------------------------------6
4.1. Block Diagram ----------------------------------------------6
4.2. Hardware Functional Specification --------------------7
4.2.1. ISDN Primary Rate Interface Function-----------7
4.2.2. Local Highway Interface Function-----------------8
4.2.3. EC Bus Interface --------------------------------------9
4.2.4. Outline of Reset System--------------------------- 10
4.2.5. Power Supply----------------------------------------- 11
5 Location of Controls and Components------------------ 12
5.1. Names and Locations----------------------------------- 12
6 Installation Instructions--------------------------------------- 13
6.1. Information about the Physical Trunk Cards ------ 13
6.1.1. BRI2 Card --------------------------------------------- 13
7 Troubleshooting Guide---------------------------------------- 15
7.1. BRI2 --------------------------------------------------------- 15
8 Miscellaneous ---------------------------------------------------- 21
8.1. How To Replace a Flat Package IC ----------------- 21
8.1.1. Preparation-------------------------------------------- 21
8.1.2. Removal Procedure--------------------------------- 21
8.1.3. Procedure --------------------------------------------- 21
8.1.4. Removing Solder From Between Pins --------- 21
8.2. Terminal Guide of the ICs Transistors and
Diodes------------------------------------------------------- 22
8.3. Memo-------------------------------------------------------- 23
9 Schematic Diagram--------------------------------------------- 24
9.1. No.1---------------------------------------------------------- 24
9.2. No.2---------------------------------------------------------- 26
9.3. No.3---------------------------------------------------------- 28
9.4. No.4---------------------------------------------------------- 30
10 Printed Circuit Board ------------------------------------------ 31
10.1. Component View ----------------------------------------- 31
10.2. Bottom View ----------------------------------------------- 32
11 Appendix Information of Schematic Diagram --------- 33
12 Exploded View and Replacement Parts List ----------- 34
12.1. IC Data------------------------------------------------------ 34
12.1.1. IC2 ------------------------------------------------------ 34
12.2. Mechanical Specification ------------------------------- 35
12.2.1. Table of Connectors -------------------------------- 35
12.3. Cabinet and Electrical Parts Location--------------- 36
12.4. Accessories and Packing Material------------------- 37
12.5. Replacement Parts List --------------------------------- 38
12.5.1. Cabinet and Electrical Parts Location ---------- 38
12.5.2. Accessories and Packing Materials------------- 38
12.5.3. Main Board Parts ------------------------------------ 38
3
     KX-NCP1280XJ
1 Safety Precautions
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.
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).
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.
4
KX-NCP1280XJ
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.
5
     KX-NCP1280XJ
3 Specifications
Function
Description
BRI Line Interface
Number of Ports
BRI2:2Ports (4Line:2B 
× 2)
Transfer Rate
192Kbit/s
Line Code
AMI
BRI Line Interface IC
PEB21150 made by Infineon
Major Function
Framer
Line Driver/Receiver
HDLC Controller (D channel)
Clock Extraction/Monitoring
Elastic Buffer (Bchannel)
Line Interface Circuit (IC)
Main Front End Circuit
Pulse Transformer
Surge Absorber
EMC Fitter
Terminating Resistance
DC Supply circuit
Supplies DC power during the intercom mode
Supplied voltage:40V
Max. power supply:4.5W [max]/1 line
BRI2
→9W[max]/The entire board
Power supply mode:Separate-line power supply mode
Phantom power supply mode
Power supply ON/OFF switching function (Software regulated)
Surge protection function
Software protection by comparator
→Relay OFF
Hardware protection by poly-switch
eSAMSON (ASIC)
EC Bus Interface Functional (Slave)
H.100 Bus Interface Functional
Digital PLL Functional Local Bus Interface Functional (Compatible with legacy)
Timing Switch Function, Gain Control Function, FIFO/DPRAM Function
See the specification of eSAMSON for details.
eSAMSON (ASIC)
Card State Display LED:1
Line State Display LED:2
Lin Interface Connector
RJ45:2ports
On-board DC/DC Power Supply
Input+15V
Output+3.3V
Self-diagnostic Functional
Condition: Port 1
→outside line, Port 2 →extension line
6
KX-NCP1280XJ
4 Technical Descriptions
4.1.
Block Diagram
EC bus
H100 bus
28
11
+3.3v
+3.3V
Status
Indication x 2
Local
Reset
nRESET
eSAMSON 2
(ASIC)
LA[12:0]
LD[7:0]
nRD,nWR
nCSI
LnRST
P0[7:0]
Jumper
+3.3V
DC/DC Converter
+
15V
BRI_RST_7-0
nBREQ
nBACK
P1[7:0]
P5[7:0]
nW
AIT
OSC
16.384MHz
A12-0
D7-0
nRD,nWR
nIRQ[1]
nCS[0]
DHW0(2.048Mbps)
UHW0(2.048Mbps)
Line Interface Block #1
TX+
TX-
RX+
RX-
CLK(4.096MHz)
CP
 [0]
CLKOUT_0(1536kHz)
RJ45
+3.3V
BRI_RST_1
T
ransformer
T
ransformer
Serge
Absor
ber
BRI-IC
(PSB21
150)
USA:On
Euro:Of
f
USA:Of
f
Euro:On
MODE_[0]
MODE0
40V
GND2
DC_CONT
 [0]
7.68MHz
nCS_BRI[0]
A7-0
D7-0
NWR,nRD
Selector
(2
1)
CLKOUT_0
CLKOUT_1
1536kHz
CLK Select
P2[6:4]
MODE_7-0
P3[7:0]
DC_cont_7-0
P4[7:0]
LA10-8
nCS[0]
nCS_BRI[1:0]
ALM(Red)
40V
GND
GND2
Jumper
SFG
SFG
EC_CLK
EC_AD[15:0]
EC_BE[1:0]
EC_FRAME
EC_TRDY
EC_ST
OP
EC_INT
EC_P
AR
EC_PERR
EC_nRST
EC_IDSEL
EC_DET
CT_NETREF
nCT_FRAME_A
CT_CLK_A
CT_D[7:0]
nRESET
PLLCLK
LDHW[1:0]
LUHW[1:0]
PC[7:0]
HW_CLK0
L_NETREF
nIRQ[0]
+3.3V
P2[7]
CT_LOS
Decoder
TCK
TDI
TDO
TMS
TRST
JT
AG
nINT_BRI
nINT_BRI
P2[2]
LED
(Red)
P2[3]
(Gr)
KX-NCP1280XJ BLOCK DIAGRAM
40V
GND
Serge
Absor
ber
C768A
XT
AL1
XT
AL2
C768
MODE1
SX
SR
nINT_BRI
Buf
fer
Line Interface Block #2
TX+
TX-
RX+
RX-
CLK(4.096MHz)
CP
 [0]
CLKOUT_1
RJ45
+3.3V
BRI_RST_2
T
ransformer
T
ransformer
Serge
Absor
ber
BRI-IC
(PSB21
150)
USA:On
Euro:Of
f
USA:Of
f
Euro:On
MODE_[1]
MODE0
40V
GND2
DC_CONT
 [1]
7.68MHz
nCS_BRI[1]
A7-0
D7-0
NWR,nRD
SFG
+3.3V
40V
GND
Serge
Absor
ber
C768B
XT
AL1
C768
MODE1
SX
SR
nINT_BRI
C768A
nINT
DHW0(2.048Mbps)
UHW0(2.048Mbps)
7
     KX-NCP1280XJ
4.2.
Hardware Functional Specification
4.2.1.
ISDN Primary Rate Interface Function
4.2.1.1.
Line Interface Outline
The reference point of the line interface on the BRI2 cards is Point S/T (Dose not support U point). and supports External call
mode and internal call mode as operating mode.
During External call mode, the power is supplied from PBX, not from DSU. During internal call mode, PSB21150 (Infineon) is
installed as ISDN basic interface IC for BRI2. Refer to "Line Interface Block" for connection diagram of basic interface.
For mode detailed specifications, refer to PSB21150 data sheet.
Line Interface Summary.
PSB21150 Block figure summary
PSB21150 Characteristics
Item
Contents
Remarks
Interface reference point
S/T point
 
Transmission mode
4 line (TX+/TX-/RX+/TX-)
 
Transmission capacity
144kbps, 2B+D(B=64kbps, D=16kbps)
BRI2:line capacity
Transmission Line code
AMI Code
 
Power Supply
External call mode: None Internal call mode:+40V power
supply
 Internal call power supply BRI2: 4.5W max/1line,
9W max/entire card
Internal call power supply
method
Phantom power supply Separate line power supply
 
Interface connector
RJ45
Item
Contents
Remarks
Transceiver mode
LT-T (External)/LT-S(Internal)
 
Line Extraction Clock
1.536MHz
 
Dch FIFO
32Byte
×2
TX/RX
Bch FIFO
64Byte
×2 (×2)
TX/RX
PCM highway interface
2.048m (Bch interface only) 
JOM-2interface
2.048m (Bch/Dch dual interface) 
Not in use for BRI2
uP-interface
8bit parallel (Intel/Motorola)
Intel mode is used for BRI2
8
KX-NCP1280XJ
4.2.2.
Local Highway Interface Function
This card utilizes an 2.048 Mbps local highway and local TSW for the purpose of switching the communications channel (B ch.)
detected from the ISDN main interface by the PSB21150, with the CT bus interface. (eSAMSON internal module)
Figure illustrates the B ch. Highway assign and eSAMSON/PSB21150 input/output timing. Refer to the eSAMSON specifica-
tions and PSB21150 databook.
Bch highway assign & eSAMSON/PSB21150 input/output timing
9
     KX-NCP1280XJ
4.2.3.
EC Bus Interface
4.2.3.1.
Dual Port RAM (DPRAM) Communication
This card sends/receives data by dual-port RAM communication as illustrated.
DPRAM communication schematic
10
KX-NCP1280XJ
4.2.4.
Outline of Reset System
4.2.4.1.
Reset Operation
Reset commands to this cards LPR (and devices under control by LPR) normally be accepted unless issued by hardware reset
or software command reset from the MPR routed through the eSAMSON.
This card's internal power reset circuit is for resetting the eSAMSON during power on and live wire connection/disconnection.
BRI2 card reset type is illustrated in table Reset system diagram.
Reset type
Reset system diagram
Reset Type
The way of Reset
Specification
Resting ASIC(eSAMSON)
OR condition of the following Reset
L active
Power on reset
Rest via Reset IC
Reset IC spec
Power Supply voltage: 3.3V
Reset voltage: 2.9V
Reset delay time: 50msec
Over 10msec
Hard reset via EC bus
Reset by EC_RST
Over 10msec 
Soft reset via EC bus
Disengaged after a set period of time
16cycles after EC_CLK about 2usec
Resetting
BRI_IC(PSB21150)
Soft reset via EC Bus
eSAMSON port P5[1:0] control
H active 4msec or above

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Here you can view online and download Panasonic KX-NCP1280XJ Service Manual in PDF. KX-NCP1280XJ service manual will guide through the process and help you recover, restore, fix, disassemble and repair Panasonic KX-NCP1280XJ PBX. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.