DOWNLOAD Panasonic KX-TDA0156CE Service Manual ↓ Size: 1.7 MB | Pages: 54 in PDF or view online for FREE

Model
KX-TDA0156CE
Pages
54
Size
1.7 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / 4-CHANNEL CELL STATION UNIT FOR DECT PORTABLE STATION
File
kx-tda0156ce.pdf
Date

Panasonic KX-TDA0156CE Service Manual ▷ View online

3
KX-TDA0156CE
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 pre-
vent 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.
1.2.
Caution
When you note the serial number, write down all of the 11 digits.
The serial number may be found on the label affixed to the bottom of the unit.
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).
4
KX-TDA0156CE
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.
3 Specifications
Item
Description
Radio Access Method
Multi Carrier TDMA-TDD
Frequency Band
1880  MHz to 1900 MHz*
1
 (*
1
 The number may vary depending on the country /area . In Taiwan,
it is 1880 MHz to 1895 MHz.)
Number of Carriers
10*
 (*
The number may vary depending on the country /area . In Taiwan, it is 8.)
Carrier Spacing
1728 kHz
Bit Rate
1152 kbps
Carrier Multiplex
TDMA, 24 (Tx12, Rx12) slots per frame
Frame Length
10 ms
Modulation Scheme
GFSK
Roll-off factor=0.5  50% roll-off in the transmitter
Max Number of PS Conversations
4 pieces
Data Coding for Modulator
Differential Coding
Voice CODEC
32 kbps ADPCM (CCITT G.721)
Transmission Output
Peak 250 mW
Operating conditions
0-40
°C (32°F-104°F), 20-80% relative air humidity (not condensing)
Operation range
Up to 300 m outdoors, Up to 50 m indoors
Dimension
Cell Station  164 (L) mm 
× 133 (W) mm × 40 (D) mm 
Weight
about 260 g
5
KX-TDA0156CE
4 Technical Descriptions
4.1.
Block Diagram
4.1.1.
Main Board
KX-TDA0156CE MAIN BOARD
S
RAM
(2
M
b
it)
IC
1
0
2
F
L
AS
H RO
M
(3
2
M
b
it)
IC
1
0
1
D1
R5
V
FP
G
A
IC
1
0
3
AD
2
3
-A
D
1
DA
B
1
5
-DA
B
0
R
ESET
FP
G
A
BBI
C (
S
C1
4
4
2
9
C
N
F
)
  IC
1
0
0
X1
0
0
(1
0.
368M
H
z
)
IC
2
0
1
2.5V
 R
e
g
.
D3
R2
V
LD
O
1
LD
O
2
A
d
d
ress/
D
a
ta
 B
u
s
F-
R
S
T
D3
R2
V
DC/
DC
Co
n
ve
rt
o
r
IC
2
0
3
 6.7V
DCDCO
UT
PC
M
 I
/F
FS
C
0
FS
C
1
PC
M
 I
/F
D1
R5
V
X1
0
1
AC
S0
AC
S1
UT
X UR
X
CN1
0
1
Test mode
software D.L.
connector
(R
S
2
3
2
C
 i
/f)
Re
d
GPI01
R
F
2R5V
AC
S2
AC
S2
/C
S
1
D1
R8
V
G
A
3R
2V
D3
R2
V
D3
R2
V
G
A
3R
2V
Q3
2
0
Q3
2
1
/C
E
CN1
0
0
GPI00
P2
[2
]
D3
R2
V
Gr
e
e
n
Q4
5
0
D3
R2
V
H
Tr
a
n
s
.
T1
0
0
L
SC
L
K
Q4
5
1
SW
1
0
0
D
IP SW
(6
b
it
)
T
R
DNI
C
IC
1
0
6
S
tar
t-
up
co
n
tr
o
l ci
rc
u
it
C
3
39,
340,
341,
342
1.0 F
×
4
IC
1
0
4
C
o
nf
ig
ra
ti
on
RO
M
PA_V3.3V
IC
2
0
0
1.
5V
 R
e
g.
IC
2
0
4
4.
9V
 R
e
g.
DNI
C5
V
D1
R8
V
RF1R8V
IC
2
0
2
3
.3V
 R
e
g
.
DNI
C5
V
(1
6.
384M
H
z
)
+
++
+
+
+
A
n
te
nna 2
A
n
tenna 1
D90
0
(A
nt
enna S
w
it
c
h
)
R
F2R5V
R
F1R8V
T
x
D
A
    SK
R
F
C
L
K  SO
RxDSG  LE
PA_
V
3.3V
AN
T
2
AN
T
1
RF  out/in
RF  Module
IC900
R
F2R5V
R
F1R8V
PA_
V
3.3V
AN
T
2
AN
T
1
RF  out/in
RF  Module
IC901
RxDA
6
KX-TDA0156CE
4.2.
Hardware Description
4.2.1.
Function Description
KX-TDA0156CE is the Cell Station (CS) for TDA series. CS converts voice data from PBX to radio signal and transmits to Porta-
ble Station (PS). Conversely CS converts radio signal from PS to voice data and transmits to PBX.
4.2.2.
 CPU Circuit
The IC100(SC14429) is CPU with BBIC and DSP and is manufactured by Sitel. This CPU has 16 bits data bus and  processes
control command from PBX and PS.
Application software is stored in 32Mbit Flash Memory (IC101). This Flash Memory is so called Dual Operation type Flash. It is
possible to write data onto this Flash Memory in active status so that this Flash Memory is used as EEPROM. The FLASH mem-
ory of this Dual Operation type is effective in preventing fatal destruction when remote uploading is failed. If the power failure
occurs during program uploading, the FLASH memory data is lost. However, this type of memory is recoverable.
Furthermore calibration data for RSSI measurement and clock is stored in the Flash Memory, too.
2Mbit SRAM(IC102) is used as the work area. CN101 is the communication port for service purpose. CN101 is connected to the
serial port of the CPU.
SW100 is 6bits DIP switch to set the operating modes of CS, site survey mode, program upload mode and so on.
4.2.3.
Line Interface
This circuit handles data communication to CSIF card (KX-TDA0144/KX-TDA0143). CS is connected to CSIF card by 4 wires.
The power voltage of CS is DC 40V supplied from CSIF card by 4 wires. The analog signal for data transmission is transferred
via outside wires. Voice data, control data and superframe synchronisation signal for CS synchronisation is carried on this ana-
log signal.
The signal from CSIF card is provided to CN100, and provided to DNIC (IC106) via filters and pulse transformer (T100).
DNIC is the abbreviation of Digital Network IC. DNIC has 2 operating modes, namely master mode and slave mode. DNIC
works as slave in CS. DNIC extracts clocks ( 8kHz frame signal and 4MHz clock ) and digital data in ST-BUS format the analog
signal provided by PBX.
These clocks and digital data are transferred to FPGA(IC103).
This ST-BUS digital data contains data channel, control channel and voice channel.
The first 2bits of the data channel are the control data. Voice channel contains 4 ADPCM data. And superframe synchronization
signal is carried by HK bit of control channel.
Note:
The GND of CS(KX-TDA0156CE) is not common to the GND of the PBX itself, so care must be taken when using a measuring
device such as an oscilloscope.(Make sure to use the measuring device with its frame ground open.)
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  • Here you can View online or download the Service Manual for the Panasonic KX-TDA0156CE in PDF for free, which will help you to disassemble, recover, fix and repair Panasonic KX-TDA0156CE PBX. Information contained in Panasonic KX-TDA0156CE 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.