KX-NCP1180X - Panasonic PBX Service Manual (repair manual)

Model
KX-NCP1180X
Pages
50
Size
2.39 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / 4-PORT ANALOGUE TRUNK CARD
File
kx-ncp1180x.pdf
Date

View Panasonic KX-NCP1180X Service Manual online

ORDER NO. KMS0810586CE
4-Port Analogue Trunk Card
Model No.
KX-NCP1180X
(for Asia, Oceania, Middle Near Esat, Africa and 
Latin America)
2
KX-NCP1180X
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. Circuit Operation -------------------------------------------7
4.2.1. Description of Control System Circuits-----------7
4.2.2. Description of Functions and Circuits ------------9
4.2.3. Power Supply Voltage Generator --------------- 15
5 Location of Controls and Components------------------ 16
5.1. Names and Locations----------------------------------- 16
6 Installation Instructions--------------------------------------- 17
6.1. Information about the Physical Trunk Cards ------ 17
6.1.1. LCOT4 Card ------------------------------------------ 17
7 Troubleshooting Guide---------------------------------------- 18
8 Miscellaneous 
---------------------------------------------------- 25
8.1. How To Replace a Flat Package IC ----------------- 25
8.1.1. Preparation-------------------------------------------- 25
8.1.2. Removal Procedure--------------------------------- 25
8.1.3. Procedure --------------------------------------------- 25
8.1.4. Removing Solder From Between Pins --------- 25
8.2. Terminal Guide of the ICs Transistors and
Diodes------------------------------------------------------- 26
8.3. Memo-------------------------------------------------------- 27
9 Schematic Diagram--------------------------------------------- 28
9.1. No.1---------------------------------------------------------- 28
9.2. No.2---------------------------------------------------------- 30
9.3. Waveform -------------------------------------------------- 32
10 Printed Circuit Board ------------------------------------------ 35
10.1. Component View ----------------------------------------- 35
10.2. Bottom View ----------------------------------------------- 36
11 Appendix Information of Schematic Diagram --------- 37
12 Exploded View and Replacement Parts List ----------- 38
12.1. IC Data------------------------------------------------------ 38
12.1.1. IC5 (ASIC)--------------------------------------------- 38
12.1.2. IC203 (CODEC) ------------------------------------- 40
12.1.3. IC3 (Caller ID ASIC) -------------------------------- 41
12.2. Cabinet and Electrical Parts Location--------------- 44
12.3. Accessories and Packing Material------------------- 45
12.4. Replacement Parts List --------------------------------- 46
12.4.1. Cabinet and Electrical Parts Location ---------- 46
12.4.2. Accessories and Packing Materials------------- 46
12.4.3. Main Board Parts ------------------------------------ 46
3
     KX-NCP1180X
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-NCP1180X
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-NCP1180X
3 Specifications
Functional Block
Functional contents
Analog External Line Interface
Number of Ports
4 ports
Main Function
Dial pulse signal transmission function
DTMF signal transmission function
Polarity reversal detecting function
Bell detection function
End-call signal detection function
2W/4W Conversion function
Surge Protection function
4ch CODEC by STMENS function
• CODEC Function
• Power down function
• µ/A law switching function
• Test function (Loop back, tone generation)
• Programmable digital filter function
• Serial interface function
• PIO function
• CO Caller ID function (FSK/DTMF)
DTMF Generator
Available to transmit an optional tone every 4 line port
On-board DC/DC Power
Input +15V
Output +15V, +5V, +3.3V
Power Failure Transfer
Supports 1 line
ASIC (IC3)
EC bus interface function
H.100 bus Interface function
Digital PLL function Local bus interface function
Time switch function, Gain Control function
Intelligent PIO function, JTAG
LED Display Circuit
Card state Display LED: 2 colors (Red/Green)
External Interface Connector
Extension interface
RJ45: 4 port
Power Failure Transfer
RJ45: 1 port
6
KX-NCP1180X
4 Technical Descriptions
4.1.
Block Diagram
KX-NCP1180X BLOCK DIAGRAM
BACK BOARD
nR
E
S
L_n
R
S
T
nW
R
nR
D
LA
[12:
0]
L
D
[7
:0
]
M
O
D
E
[5
:0
]
P1
[7
:0
]
n
R
ESET
P
LLC
LK
DI
N
DO
UT
DCL
K
C_
CS
[0
]
FH
HW
C
L
K
[0
]
LD
H
W
[0
]
LU
H
W
[0
]
E
C
_C
LK
EC
_
P
A
R
E
C
_
T
RDY
EC
_
S
T
O
P
EC
_
PER
R
EC
_
IN
T
EC
_
N
R
S
T
C
T
_C
8_A
C
T
_
D
[7
:0
]
ASI
C
(C
ID
nW
R
nR
D
nR
E
S
R
ESET IC
IC
6
XT
A
L
16.
38
4
MH
z
C_
CS
[0
]
DH
W
[0
]
ASI
C
(e
SAM
SO
N)
UH
W
[0
]
CL
K
FH
CS
CO
DE
C
PEB
2466
EC
_
D
ET
C
T
_
C
B_
A
n
C
S[0]
XT
AL
4.096MH
z
DR
IV
E
R
DR
IV
E
R
P2
2
P2
3
+3
.3
V
P2
0
MO
D
E
4
J
U
M
PER
8
n
C
P
CDE
T
[0
]
S
HUNT
[0
]
OP
 A
M
P
R
e
v&Be
ll
&
S
hunt
Detec
tor
Por
t#
1
T
rans
for
m
e
r
DI
A
L
 &
D
C
 Loop &
CP
C
Detec
tor
n
BEL
D
E
T
[0
]
n
L
OOP
[0
]
Se
rg
e
EM
C
n
R
E
V
D
E
T
][0
]
OP
 A
M
P
R
e
v&Be
ll
&
S
hunt
Detec
tor
Por
t#
2
T
rans
for
m
e
r
DI
A
L
 &
D
C
 Loop &
CP
C
Detec
tor
n
BEL
D
E
T
[1]
n
L
O
O
P[1]
Se
rg
e
EM
C
n
R
E
V
D
ET[1]
OP
 A
M
P
R
e
v&Be
ll
&
S
hunt
Detec
tor
Por
t#
3
T
rans
for
m
e
r
DI
A
L
 &
D
C
 Loop &
CP
C
Detec
tor
n
BEL
D
E
T
[2]
n
L
O
O
P[2]
Se
rg
e
EM
C
n
R
E
V
D
ET[2]
OP
 A
M
P
R
e
v&Be
ll
&
S
hunt
Detec
tor
Por
t#
4
T
rans
for
m
e
r
DI
A
L
 &
D
C
 Loop &
CP
C
Detec
tor
n
BEL
D
E
T
[3]
n
L
O
O
P[3]
Se
rg
e
EM
C
n
R
E
V
D
ET[3]
n
C
PC
D
E
T
[1]
S
HUNT
[1
]
n
C
PC
D
E
T
[2]
S
HUNT
[2
]
S
HUNT
[3
]
nC
S
[0
]
+2
.5
V
+5
V
+3
.3
V
+
15V
DC
/D
C
DC
/D
C
+2
.5
V
DC
/D
C
L_n
R
S
T
nW
R
nR
D
LA
[12:
0]
L
D
[7
:0
]
M
O
D
E
[5
:0
]
P1
[7
:0
]
n
R
ESET
P
LLC
LK
DI
N
DO
UT
DCL
K
C_
CS
[0
]
FH
HW
C
L
K
[0
]
LD
H
W
[0
]
LU
H
W
[0
]
E
C
_C
LK
E
C
_A
D
[15:
0
]
EC
_
P
A
R
EC
_
F
R
A
M
E
E
C
_
T
RDY
EC
_
S
T
O
P
EC
_
BE[
1
:0
]
EC
_
PER
R
EC
_
IN
T
EC
_
ID
SEL
EC
_
N
R
S
T
CT
_
N
E
T
RE
F
CT
_
F
RA
M
E
_
A
C
T
_C
8_A
C
T
_
D
[7
:0
]
A
[5:0]
D
[7:
0]
ASI
C
(C
ID
)
J
U
M
PER
J
U
M
PER
ASI
C
(e
SAM
SO
N)
DO
UT
DX
A
DX
B
PC
L
K
MC
L
K
DI
N
DCL
K
CS
DRA
DRB
CO
DE
C
PEB
2466
FS
C
R
ESET
EC
_
D
ET
C
T
_
C
B_
A
NC
S
0
NW
R
NR
S
T
NR
D
DR
IV
E
R
DR
IV
E
R
P2
2
P2
3
P2
0
P
O
[7
:0
]
OP
 A
M
P
DI
A
L
 &
D
C
 Loop &
CP
C
Detec
tor
Se
rg
e
EM
C
OP
 A
M
P
DI
A
L
 &
D
C
 Loop &
CP
C
Detec
tor
Se
rg
e
EM
C
OP
 A
M
P
DI
A
L
 &
D
C
 Loop &
CP
C
Detec
tor
Se
rg
e
EM
C
OP
 A
M
P
DI
A
L
 &
D
C
 Loop &
CP
C
Detec
tor
Se
rg
e
EM
C
n
C
PC
D
E
T
[3]
nC
S
[0
]
+2
.5
V
DC
/D
C
DC
/D
C
DC
/D
C
DC
/D
C
DC
/D
C
DC
/D
C
IC5
IC5
IC203
7
     KX-NCP1180X
4.2.
Circuit Operation
4.2.1.
Description of Control System Circuits
4.2.1.1.
Reset
On startup, releasing the ASIC reset is executed by EC_nRST through MPR.
After releasing the ASIC, the local reset signal should be sent to CODEC by releasing the soft rest from MPR, and CODEC fac-
tor should be downloaded from MPR.
• LED operational state display LED (2 colors)
Red ON: Fault (includes RESET)
Green ON: INS (line free)
Green flash (60/sec): INS (line busy)
Red flash (60/sec): OUS
OFF: the power section failure
4.2.1.2.
Local Highway Interface
Packs 2.048, 4.096, 8.192 MHz highway (Max.64 timeslot). (voice communication bus in the circuit board)
The PCM data of arbitrary streams 0-15 (128 timeslot / 1 stream) on the CT bus can switch to the arbitrary local highway (64
timeslot) by the local TSW.
The timeslot configuration example of the local highway is shown below.
8
KX-NCP1180X
4.2.1.3.
ASIC...IC5
• EC bus Interface
16bit/8MHz two-way address data multiplex self-bus (communication bus with MPR).
• CT bus Interface
Supports eight of 8.192MHz highway (128 timeslot) (voice communication bus with MPR).
• Local  TSW
Timeslot switching between CT bus (1024ch) and local highway (64ch).
(Timeslot switching between the voice communication bus in MPR and that in the circuit board).
• Local Gain Control
Gain control of the local highway up-down 64ch by 1dB/step randomly.
• GPIO Interface
A parallel interface that can be set in random interactively.
Refer to IC5 (ASIC) (P.38).
9
     KX-NCP1180X
4.2.2.
Description of Functions and Circuits
4.2.2.1.
Dial Pulse Signal Transmission
Transmits 10pps/20pps dial pulse by a open/close action between Tip and Ring with Photo MOS relay.
The make width, break width and inter digital width for 10pps/20pps can be set respectively.
When making, 37pin (DIAL [0]) of IC203 becomes Low level, and RL3 turns ON. When breaking, 37pin (DIAL [0]) of IC203
becomes High level, and RL3 turns OFF.
It provides the SHUNT control function for the stabilization of line power depending on the destination. Turning ON PC5 when
transmitting pulse reduces the impedance at making, and stabilizes the line power.
4.2.2.2.
Circuit For Line Acquisition
Making CODEC (e.g. pin-37 of IC203, DIAL [0]) Low level, the photo MOS relay (RL3) turns ON and the line is acquired.
It is used in common as Dial Pulse transmitting circuit.
DC Loop Path:
• Ring
→L1→D1→D2→D3→RL3→Q4(C-E)→D4→D3→L1→J1→Tip
• Tip
→J1→L1→D3→RL3→Q4(C-E)→D4→D3→D2→D1→L1→Ring
10
KX-NCP1180X
4.2.2.3.
DTMF Signal Transmission
This transmits the DTMF signal on the highway timeslot. The different DTMF signals can be transmitted to the optional ports at
the same time.
They are transmitted to the line through CODEC.
4.2.2.4.
Bell Signal Detection
During on-hook, transmitting the bell signal to the AC loop in the CR series circuits (C2 and R2) detects the current by Photo
Coupler (PC1,2), and it determines the presence of a bell signal. Software performs the operation for recognition and determina-
tion of a pattern of bell signals.
Bell loop path
• Ring
→L1→R2→PC(1-2)→C3→R5→L1→J1→Tip
In this path, PC1 4-pin converts from High to Low, and a bell signal is detected.
• Tip
→J1→L1→R5→C3→PC(1-2)→R2→RL1→L1→Ring
In this path, PC2 4-pin converts from High to Low, and a bell signal is detected.

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