KX-NCP1174XJ (serv.man2) - Panasonic PBX Service Manual (repair manual)

Model
KX-NCP1174XJ (serv.man2)
Pages
67
Size
3.66 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / 16-PORT SINGLE LINE TELEPHONE EXTENSION CARD
File
kx-ncp1174xj-sm2.pdf
Date

View Panasonic KX-NCP1174XJ (serv.man2) Service Manual online

ORDER NO. KMS0810585CE
16-Port Single Line Telephone Extension Card
Model No.
KX-NCP1174XJ
(for Canada, Asia, Oceania, Middle Near Esat, Africa 
and Latin America)
2
KX-NCP1174XJ
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 General/Introduction 
---------------------------------------------5
4.1. General Description ---------------------------------------5
5 Technical Descriptions------------------------------------------6
5.1. Block Diagram ----------------------------------------------6
5.2. Circuit Operation -------------------------------------------7
5.2.1. Control-System Circuit -------------------------------7
5.2.2. CODEC Function (IC201, 202, 250, 251) -------9
5.2.3. 2W-4W Conversion -----------------------------------9
5.2.4. DTMF Signal Detection ---------------------------- 10
5.2.5. Power Supply ---------------------------------------- 11
5.2.6. Dial Pulse Detection -------------------------------- 11
5.2.7. Hook Detection--------------------------------------- 12
5.2.8. Ring Trip Feature  ----------------------------------- 12
5.2.9. Surge Protection  ------------------------------------ 13
5.2.10. Bell Signal Generator------------------------------- 14
5.2.11. Bell Signal Transmission -------------------------- 14
5.2.12. EXT-CID Transmission----------------------------- 15
5.2.13. Power Supply Voltage Generator --------------- 17
6 Location of Controls and Components------------------ 18
6.1. Names and Locations----------------------------------- 18
7 Installation Instructions--------------------------------------- 19
7.1. Information about the Physical Extension
Cards -------------------------------------------------------- 19
7.1.1. SLC16 Card------------------------------------------- 19
8 Troubleshooting Guide---------------------------------------- 20
9 Miscellaneous 
---------------------------------------------------- 29
9.1. How To Replace a Flat Package IC ----------------- 29
9.1.1. Preparation-------------------------------------------- 29
9.1.2. Removal Procedure--------------------------------- 29
9.1.3. Procedure --------------------------------------------- 29
9.1.4. Removing Solder From Between Pins --------- 29
9.2. Terminal Guide of the ICs Transistors and
Diodes------------------------------------------------------- 30
10 Schematic Diagram--------------------------------------------- 31
10.1. Block Diagram -------------------------------------------- 31
10.2. No.1---------------------------------------------------------- 32
10.3. No.2---------------------------------------------------------- 34
10.4. No.3---------------------------------------------------------- 38
10.5. No.4---------------------------------------------------------- 42
10.6. No.5---------------------------------------------------------- 44
10.7. Waveform -------------------------------------------------- 45
11 Printed Circuit Board ------------------------------------------ 49
11.1. Component View ----------------------------------------- 49
11.2. Bottom View ----------------------------------------------- 50
12 Appendix Information of Schematic Diagram --------- 51
13 Exploded View and Replacement Parts List 
----------- 52
13.1. IC Data------------------------------------------------------ 52
13.1.1. IC14 (ASIC) ------------------------------------------- 52
13.1.2. IC201, IC202, IC250, IC251 (CODEC I/O
Port)----------------------------------------------------- 54
13.1.3. IC700 (Caller ID ASIC)----------------------------- 56
13.2. Cabinet and Electrical Parts Location -------------- 59
13.3. Accessories and Packing Material ------------------ 60
13.4. Replacement Parts List -------------------------------- 61
13.4.1. Cabinet and Electrical Parts Location --------- 61
13.4.2. Accessories and Packing Materials ------------ 61
13.4.3. Main Board Parts ----------------------------------- 61
3
     KX-NCP1174XJ
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-NCP1174XJ
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-NCP1174XJ
3 Specifications
4 General/Introduction
4.1.
General Description
This card is plugged into a free slot on the NCP500/1000 systems and randomly connects up to 16 SLT devices.
This card sends Caller ID signal to extension ports.
Functional Block
Functional contents
Extension Interface
Number of Ports
16 ports
SLT Interface
+30V 30mA Feeding function
Dial-pulse signal detecting function
DTMF signal detecting function
Bell signal issuing function
Hook detecting function
Ringtrip detecting function
2W/4W converting function
Surge protective function
4ch CODEC function
• Test function (Loop back, Tone generation)
• Programmable digital filtering function
• Serial interface function
• PIO function
DTMF Receiver
16 lines for each port
On-board Ringer
20/25Hz 75Vrms
Phase control (Three-phase / Four-phase)
On-board DC/DC Power Supply
Input +15V
Output +5V, +3.3V
Input +40V
Output for Bell ringing relay: +160V, -100V
ASIC
EC bus interface function
H.100 bus interface function, Digital PLL function
Local bus interface function
Time switch function, Gain controlling function, FIFO/DPRAM function
Intelligent PIO function
LED Display Circuit
Card status indicating LED: Two colors (Red/Green)
External Interface Connector
Extension interface
RJ45 16 port
Caller ID Generator
Mounted Number
 4
Supported Standard
 ITU-T V.23 (1200bps) FSK
 Bell202 (1200bps) FSK
6
KX-NCP1174XJ
5 Technical Descriptions
5.1.
Block Diagram
KX-NCP1
174XJ BLOCK DIAGRAM
DC
 Fe
e
d
in
g(
+
3
0
V
)
Se
rg
e
EM
C
DC
 Fe
e
d
in
g(
G
N
D)
H
ook
-
D
e
t
&
Ri
n
g
tr
ip
-D
e
t
Be
ll
R
e
lay D
ri
v
e
r
Tip
Ri
n
g
CH
_S
EL
FH
#H
OO
K0
BE
LL
0
+40
V
20H
z/
25
Hz
 S
ig
n
a
l
IC14
Port#
1
nR
ES
ET
P2
6
P0
[7
:0
]
P4
[7
:0
]
TO
E[
15
:0
]
LD
[7
:0
]
F
H
,H
W
CLK
,D
HW,
UH
W
IC
1
DT
MF
RE
C
#T
OE
0
PF
RL
Y
HW
CL
K
DH
W
UH
W
IC
201
PEB
24
66
Ba
la
n
c
e
Ne
tw
o
rk
(BN)
S
a
m
e
 a
s
 "
P
o
rt#2".
S
a
m
e a
s
 "
P
o
rt#2".
P
o
rt#3
Por
t#
4
S
a
m
e
 a
s
 "
P
o
rt#2".
IC
202
PEB
24
66
IC
250
PEB
24
66
IC
251
PEB
24
66
DI
N
DO
UT
C_
CS
[3
:0
]
DC
LK
nR
ST
On
-
Boa
rd
Rin
ger
Be
ll R
e
la
y
DC
 Fe
ed
in
g
(+3
0V
)
Se
rg
e
EM
C
DC
 Fe
e
d
in
g(
G
N
D)
H
ook
-
D
e
t
&
Ri
n
g
tr
ip
-D
e
t
Be
ll
R
e
lay D
ri
v
e
r
Tip
Ri
n
g
Port#
2
IC
1
DT
MF
RE
C
Ba
la
n
c
e
Ne
tw
o
rk
(BN)
Be
ll R
e
la
y
BE
LL
1
#H
OO
K1
S
a
m
e
 a
s
 "
P
o
rt#2".
S
a
m
e
 a
s
 "
P
o
rt#2".
+15
V
nR
ES
ET
nR
ES
ET
ST
D0
L
D[3:0]
ST
D1
#T
OE
1
DI
N
DO
UT
CS
[0
]
DC
LK
D
O
U
T
,DIN
,D
CLK
,C
S[
1]
D
O
U
T
,DIN
,D
CLK
,C
S[
2]
D
O
U
T
,DIN
,D
CLK
,C
S[
3]
Back Board
EC
_C
LK
nS
YS
TE_R
ST
EC
EC
_B
E[
1:
0
]
EC
_P
AR
EC
_F
RA
ME
EC
_T
RD
Y
EC
_S
TO
P
EC
_I
DS
EL
EC
_P
ER
R
EC
_I
NT
CT
_C
8_
A
CT
_D
[7
:0
]
UH
W
A
[5:
0]
D
[7:0
]
n
RD,
nWR
n
CS_
CID
+
2.5
V
n
RST
CP
0
H
WCL
K
+
2.5
V
+3
.3
V
+
15V
+
40V
+5
V
DC
/D
C
DC
/D
C
+2
.5
V
DC
/D
C
XT
AL
4.096MH
z
MO
D
E
4
J
U
M
PER
8
ASIC
(e
SA
M
S
O
N
)
M
O
D
E
[5
:0
]
P
O
[7
:0
]
n
R
ESET
P
LLC
LK
J
U
M
PER
R
ESET
IC
XT
A
L
16.
38
4
MH
z
J
U
M
PER
Be
ll SY
N
C
P
O
[7
:0
]
M
O
D
E
[3
:0
]
H
WCL
K[1
]
C
P[0
]
CP
1
L
A[1
2:0
]
L
D[7
:0]
n
RD,
nWR
n
RST
Se
rg
e
EM
C
H
o
o
k-Det &
Ringtrip-Det
Be
ll
R
e
lay D
ri
v
e
r
CH
_S
EL
FH
IC14
R
ing
er
(75V
rm
s
)
Port#
1
P2
6
P0
[7
:0
]
P4
[7
:0
]
IC
1
DT
MF
RE
C
HW
CL
K
DH
W
UH
W
IC
201
COD
EC
PEB
24
66
Ba
la
n
c
e
Ne
tw
o
rk
(BN)
S
a
m
e
 a
s
 "
P
o
rt#2".
S
a
m
e a
s
 "
P
o
rt#2".
P
o
rt#3
Por
t#
4
S
a
m
e
 a
s
 "
P
o
rt#2".
P
o
rt#5
 - #8
IC
202
COD
EC
PEB
24
66
P
o
rt#9 -
#12
IC
250
COD
EC
PEB
24
66
IC
251
COD
EC
PEB
24
66
DI
N
DO
UT
C_
CS
[3
:0
]
DC
LK
O
n
-Boa
rd
Rin
ger
Se
rg
e
EM
C
Be
ll
R
e
lay D
ri
v
e
r
Port#
2
IC
1
DT
MF
RE
C
Ba
la
n
c
e
Ne
tw
o
rk
(BN)
Be
ll R
e
la
y
S
a
m
e
 a
s
 "
P
o
rt#2".
S
a
m
e
 a
s
 "
P
o
rt#2"
.
Back Board
EC
_C
LK
nS
YS
TE
_R
ST
EC
_A
D[
15
:0
]
EC
_B
E[
1:
0
]
EC
_P
AR
EC
_F
RA
ME
EC
_T
RD
Y
EC
_S
TO
P
EC
_I
DS
EL
EC
_P
ER
R
EC
_I
NT
CT
_C
8_
A
CT
_F
RA
M
E
_
A
CT
_N
ET
R
E
F
CT
_D
[7
:0
]
IC70
0
DC
/D
C
DC
/D
C
DC
/D
C
DC
/D
C
+V
DC
/D
C
DC
/D
C
4
8
ASIC
(e
SA
M
S
O
N
)
ASIC
(CID)
M
O
D
E
[5
:0
]
P
O
[7
:0
]
n
R
ESET
P
LLC
LK
P
O
[7
:0
]
M
O
D
E
[3
:0
]
H
WCL
K[1
]
C
P[0
]
CP
1
L
A[1
2:0
]
L
D[7
:0]
n
RD,
nWR
n
RST
DC Feeding (GND)
DC Feeding (+30V)
DC Feeding (GND)
DC Feeding (+30V)
H
o
o
k-Det &
Ringtrip-Det
L
D[3:0]
Port#13 - #16
7
     KX-NCP1174XJ
5.2.
Circuit Operation
5.2.1.
Control-System Circuit
5.2.1.1.
IC14 (ASIC)
• EC bus interface
Independent bus for 16bit/8MHz two-way address data multiplex.
• CT bus interface
Supports eight 8.192MHz highways (128 time slots).
• Local TSW
Exchanges the time slots between CT bus (1024ch) and local highway (64ch).
• Local highway interface
Accommodates 2.048, 4.096, and 8.192MHz highways (Up to 64 time slots).
• Local gain control
Controls the gain of the local highway up-and-down 64ch in 1db step arbitrarily.
8
KX-NCP1174XJ
• CODEC interface
Can connect up to four Infineon-manufactured PEB2466, and is intended for enabling the line control.
• GPIO interface
Parallel interface that is arbitrarily programmable bidirectionally.
9
     KX-NCP1174XJ
5.2.2.
CODEC Function (IC201, 202, 250, 251)
Infineon PEB2466 CODEC is installed. The analogue features such as BN, frequency characteristic, volume level, side tone are
configured by ASIC CODEC interface DCLK, CS, DOUT, DIN. In addition, the CODEC has an internal I/O port that supports Hook
detection, DTMF detection, BELL relay control and DIAG relay control. Also, it converts A/D to D/A, and 4-line-analogue signal to
PCM code in G.711 format. 
5.2.3.
2W-4W Conversion
It converts 4W-VOX signal used in the PBX to 2W-VOX signal used in SLT, and vice versa. It consists of an operational amplifier in
the HIC and a balanced network in the CODEC. It can control the return loss of the audio data and frequency characteristics. By
modifying the CODEC program, it can match the corresponding impedance. 
10
KX-NCP1174XJ
5.2.4.
DTMF Signal Detection
Each port has its own DTMF receiver. The receiver detects the signal using IC1 for port A through D, IC2 for port E through H, IC4
for port I through L and IC6 for port M through P. The CODEC detects the DTMF data to be effective at EST terminal=H. This infor-
mation is detected in the MPR via SAMSON, then DTMF signal is detected by MPR reading the DTMF receiver data that came
through the SAMSON local bus.

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