Panasonic KX-TD612NE User manual

ORDERNO.KMS0005498C2
Digital Super HybridSystem
KX-TD612NE / KX-TD61260CE / KX-TD61261G / KX-
TD61280CE / KX-TD61291CE / KX-A227X
(for North Europe)
2000 Kyushu Matsushita ElectricCo., Ltd. All rights reserved.
Unauthorized copying and distribution isaviolation of law.
1. INTRODUCTION
1.1. SAFETY PRECAUTIONS
1. Before servicing, unplug the power cord to prevent an electric
shock.
2. When replacing parts, use onlythe manufacturer’srecommended
components.
3. Check the condition of the power cord. Replace ifwear or damage
isevident.
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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 make the following insulation resistance test to prevent the
customer from being exposed to shock hazards.
1.2. INSULATIONRESISTANCETEST
1. Unplug the power cord and short the twoprongs of the plug with
ajumper wire.
2. Turn on the power switch.
3. Measure the resistance value with an ohmmeter between the
jumpered AC plug and each exposed metal cabinet part
(screwheads, control shafts, handlebrackets, etc.). / "Note: Some
exposed parts maybe isolated from the chassisbydesign. These
will read infinity.
4. Ifthe measurement isoutside the specified limits, there isa
possibilityof ashock hazard. / The equipment shouldbe repaired
and rechecked before itisreturned to the customer.
Resistance=more than5 M ohm/ (at DC 500V)
1.3. BATTERYCAUTION
CAUTION:
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Danger of explosion ifbatteryisincorrectlyreplaced. Replace only
with the same or equivalent type recommended bythe
manufacture. Discard used batteries according to following caution:
/
Disposal of lithium batteries shouldbe performed bypermitted,
professional disposal firms knowledgeableinstate government
federal and local hazardous materialsand hazardous waste
transportation and disposal requirements. / Batterycontinues to
have no transportation limitations as long as theyare separated to
prevent short circuits and packed instrong packaging. /
Commercial firms that dispose of anyquantityof lithium cells
shouldhave amechanism inplace to account for theirultimate
disposition. Thisisagood practice for all types of commercial or
industrial waste. /
Recommend Type Number: / CR2354 (BATT) Manufactured by
MATSUSHITA
1.4. FORSERVICETECHNICIANS
ICs and LSIs are vulnerable tostatic electricity. / Whenrepairing, the following precautions will
helpprevent recurring malfunctions.
1. Cover the plasticparts boxes with aluminum foil.
2. Ground the soldering irons.
3. Use aconductive on the worktable.
4. Donot touch ICor LSI pins with bare fingers.
Warning:
Static sensitive devices are used.
To
printedcircuit boards fromstatic
electricity,
do not touchconnectors indicated
to
To discharge bodystatic, touch
ground
weara grounding strap.
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Note:
Fordetails of installation, refertothe SystemReference Manual.
1.5. SPECIFICATIONS
General Description
1. Capacity: ISDN lines / Extension lines 3max. (CO lines 6max.)
(12max. withXDP)
2. Control Method: StoredProgramCPU: 16 bits CPU
3. Switching: Non Blocking PCM Time Sharing
Switch
4. PowerSupplies: Primary/ Secondary AC 110-240 V, 50/60 Hz
/
Volt: +5V, +26V, -15V
PowerFailure
-Memoryback-up duration:seven yearsbyfactory-provided lithium battery
-System operation for several hoursbyrecommended batteries (consisting oftwo 12
V
batteries)
5. Dialing: Dial Pulse (DP) 10pps, 20pps, Tone (DTMF) Dialing, DTMF-DP
6. Connector: ISDN lines RJ45 Modular
connector
Extension lines 8pinterminal block
Doorphone 9pinterminal block
Paging Output Two-conductors Jack (
MINI
JACK 3.5 mm
diameter)
External Music Input Two-conductors Jack (
MINI
JACK 3.5 mm
diameter)
7. EXTConnection Cable: Single line telephone 1 pairwire (T, R)
KX-T7230, KX-T7235, KX-T7250, KX-
T7531, / KX-T7533, KX-T7536 etc. 1 pairwire (L, H): T
and
not necessaryor/ 2
pair
R, L, H) forXDP
KX-T7310 etc. 1 pairwire (T, R)
KX-T7130, KX-T7020, KX-T7050 etc. 2 pairwire (L, H, T, R)
8. SMDR: / (Station Message
Detail Recording) Interface EIA (RS-232C) (D-SUB,
9
Output Equipment Printer
Detail Recording Date, Time, Extension
Number,
Department Code,
ISDN
Number, Call Duration,
Charge
Fee, Account Code
9. Dimensions: 368(W) × 95(H) × 284(D) mm (14 1/2” × 3 3/4” × 11 3/16”)
10. Weight: 2.5 kg(5.5 lb)
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CHARACTERISTICS
1.Station Loop Limit: KX-T7531/ KX-T7533/ KX-T7536/ KX-
T7230/
KX-T7235/ KX-T7250/ KX-T7130/ KX-
T7020/
KX-T7050 etc.
40 ohms
Single line telephone/ KX-T7310/ etc.600 ohms including set
Doorphone 20 ohms
2.MinimumLeak Resistance: 15000 ohms
3.MaximumNumberof Station: 1 fora KX-T7531/ KX-T7533/ KX-T7536/ KX-T7230/ KX-T7235/
KX
KX-T7130/ / KX-T7020/ KX-T7050 ora single line telephone. /
2
parallel connection of a proprietarytelephone and a single
line
telephone.
4.Ring Voltage: 80 Vrms at 25 Hz depends on Ringing Load
5.PrimaryPower: AC 110-240 V, 50/60 Hz
6.Central Office Loop Limit: 1600 ohms maximum
7.Environmental Requirements: 0-40°C, 10%-90%(relative humidity)
1.6. LOCATIONOFCONTROLS
1.7. SYSTEM CONNECTIONDIAGRAM
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1.8. DISASSEMBLY INSTRUCTIONS
1.8.1. HOW TO REMOVE THE COVER (Procedure1)
1. Loosen the screw A.
2. Slide the top upper cabinet to the direction of the / arrow while
pressing the marked position.
3. Remove the 2screwsB.
4. Open the upper cabinet (45°).
5. Remove the upper cabinet.
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1.8.2. HOW TO REMOVE THE POWER SUPPLY BOARD (Procedure1 2)
1. Open the upper cabinet. (Refer to steps 1~3of No.1.8.1.)
2. Remove the 3screwsB.
3. Remove the power unitcover.
4. Pull out the 4connectors.
5. Remove the 1screw C.
6. Remove the power supplyboard ass’y.
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1.8.3. HOW TO REMOVE THE MAIN BOARD (Procedure1 3)
1. Pull out the connector.
2. Remove the 2screwsBand D.
3. Remove the mainboard.
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2. KX-TD612NE (MAIN UNIT)
2.1. CIRCUITOPERATIONS
2.1.1. OUTLIES AND FUNCTIONS OFEACH UNIT
Inthis section, the unit compositions, outlines, and functions of this systemare describedas
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follows.
Classification BoardName Model No. Quantity
Remarks
Initial Equipment PowerSupplyUnit KX-TD612NE 1
MainBoard KX-TD612NE 1
Option 1 BRI Expansion Card KX-TD61280CE 1 1S0
Voice Message Card KX-TD61291CE 1
Doorphone/DooropenerCardfor
KX-T30865 KX-TD61260CE 1
Doorphone
/
Dooropener
2port
Doorphone/DooropenerCardfor
Germantype KX-TD61261G 1
Doorphone
Dooropener
Back-up BatteryCable KX-A227X 1
2.1.2. POWER SUPPLY UNIT
The powersupplyunit generates twokinds of DC voltage, +26V and +5.8V fromAC power
supply, and supplythemtothe system.
Function Description
DC voltage generation function This function generates twoDC voltage (+
26V,
5.8V) fromthe AC powersupplyand
supplies
Ringing signal output function Basedon the 25Hz sine wave signal
output
TD612, this function generates ringing and
supplies
it tothe system.
AC cutoff detection function This function detects anycut off of the AC
power
supplyand outputs anAC alarm signal to
the
Batteryback up adapterfunction This function connect batteryand service
unit
without batteryadapter, onlyneeds cable
to
batteryand service unit.
2.1.3. BLOCK DIAGRAM FOR POWER UNIT
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2.1.4. MAIN BOARD
The mainboardhas CPU, whichcontrol the system, and TSW (Time Switch), whichswitchthe
PCM telephone call way, as its mainfunction. Furthermore, the mainboardhas common
resources tothe systems as clock function, clock making function, and soon. Also, I/Ffunction,
whichconnects the systemand the terminal units.
Function Content
Inside of
CPU CPU Core Following the programs, CPU function controls all the
system.
Serial DMA Controller Controls the transmission betweenSCC1 and Internal
RAM
RAM.
SCC1, SCC2 SCC1 controls RS 232C interface. SCC2 is reserved.
Inside of G/A TSW Function Conducts a time division transforming process such
as
PCM data temporally, and outputting the data to
random
randomPCM serial data stream.
HDLC Controller Controls the transmission of DPITS data. Two
channels
controllerare equipped. Equivalent toMT8952B forKX-
TD
Clock Function Equivalent toClock IC (MS6242) forKX-TD series.
Tone GeneratorDetection
Controller 1) Enables Three Persons Conference. (6 channels) / 2)
Generates
a dual tone. (4 channels)
TimerCounter The basic frequencyis 16.384 MHz. The timercounter
is
composedof aninterval timerof twochannels, a
watchdog
and baud rate generator.
A/DPITS Communication
Controller Usedtocontrol the digital communication of 2B + D for
analogue
typedtelephones and digital typedtelephones.
Parallel I/O Port Usedtoreceive comparativelyslowstatus, and to
control
status at bit unit. Parallel I/O Port is composedof
system
port groups #A ~ #F, whichcanbe able toaccess by8
bit,
port group #G, whichcanbe able toaccess by4 bit.
PCM StreamController Composedof the basic Timing generatorof PCM
stream,
eight channel pulse generatorblocks.
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Function Content
ISDN Block ISDN circuit interface This is aninterface circuit toconnect ISDN lines and
the
Expansion
Block Current Supply Supplies the communicative current toSLT.
Hook Detection Detects On-Hook and Off-Hook whena bell signal is
not
Ring TripDetection Detects Off-hook whena bell signal is presented.
2W-4W Lines Conversion Converts 2W signals fromSLT to4W signals.
A/D and D/A conversion Conducts a conversion between4W analog signals
and
digital signals byCODEC.
Door-phone Door-phone Calling
detection Detects a calling sign froma door-phone side.
DoorOpenerController
Function Has one channel of relaycontact output fora door
opener
controller.
Current supply Supplying the current tothe Door-phone.
Detect connection of Door-
phone Detect if the Door-phone is connected.
Internal Music on Hold Possible byMusic on HoldIC.
Voltage Watching Function Observes +5V and +15V voltages. It conducts the
system
when+5V voltage is derated.
Back-up Function -Back up thearound CPU (+5V)when AC power momentarilyfails.
-Back up thesystem data ofRAMbylithium battery.
Bell Signal GeneratorFunction Generates 25 Hz signal fromI/O port of G/A, Amplifies
and
voltage bypoweramplifierand transformer, and
supplies
extensions.
2.2. KX-TD612 Block Diagram
2.3. EXPLANATIONOFCIRCUITOPERATION
2.3.1. POWER SUPPLY UNIT
1. DC voltage generation circuit:
A. Switching section
The switching frequencyis80kHz. Q1isPWM-controlled byIC1
inorder to regulate the output voltage. Secondaryvoltage
detection isperformed byR113, R114 and VR101, and changes
inthe secondaryvoltage with respect to the base voltage of
Q101 are isolated byphoto coupler PC1and sent to IC1.
B. Secondarycircuit
Atfirst, itproduces +26V DC voltage. And itproduces +5V DC
voltage from voltage drop chopper circuit.
2. Ringing signal output function:
Ringing signal (25Hz, 8Vac from mainboard) isamplified inpower
bypower amplifier circuits (including of IC301, IC304, R301-307,
C301-303 and D301). Ringing signal amplified inpower is
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transmitted to the ringing transformer through pin7of CN101.
3. AC cut off detection function:
AC power failure isdetected byR31 -R36, R38, D31-34, C31 and
PC2. When AC power ison, pin4of PC4ishigh. When AC power
isturned off, pin4of PC2changes to low.
4. Batteryback up function:
Thisback up batteryadapter circuithas DC supplyfunction, from
battery(+24V) to service unitand DC charge function from service
unitto battery(+24V). Charge current is0.4A.
2.3.2. MAIN BOARD
1. CPUBlock
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CPUcircuitismainlycomposed of following parts. / 16 bitCPU
(IC100) / ROM(IC102, IC103, IC104, IC105) / RAM(IC106, IC107) /
Gate Array(IC101) etc. /
CircuitOperation:
CPU(IC100) controlsthe programs inROM(IC102, IC103, IC104,
IC105), that is, the system. / RAM(IC104, IC105) isbacked up by
back-up battery(BAT1), and keeps system data. / Gate Arrayis
equipped with following function.
(a) TSW (Time division Switch) Controller Function / (b) Clock
Function / (c) Tone Generator Detection Processor / (d) Timer
Counter / (e) Parallel I/O Port / (f) PCMHighwayController
Function / (g) APT Data Communication Circuit/ (h) DPT Data
Communication Circuit/ (i)HDLCController /
(a) TSW (time Division Switch) Controller Function / Inside of G/A,
four PCMhighwayare installed. One PCMhighwaycan have 32
channelsof 8bitPCMdata, therefore maximum 128 channelsof
PCMdata are available. Followings are the assignments of each
highway. / HW0: Conference Circuit, Tone-DTMF Generator / HW1:
ISDN#1~#3, Paging, Musicon hold, Door-phone, Option / HW2:
EXT#1~#8(DPT), EXT#1~#4(APT, SLT) / HW3: EXT#5~#8(APT, SLT)
/
(b) Clock Function / Thisfunction supplies areal time clock to the
system. Thisfunction has its ownpower source, and isbacked up
bybattery. /
(c) Tone Generator Detection / Thisissignal processor to use
following function
1. Three Persons Conference / Conference function is forenabling the three person’s
conference. This function is connectedwithHWS0 of the downhighwayand HWR0 of the up
highway. Afterthe voice data whichare transferredtoHWS0 at TSW are processedwiththe
summation, and representedtoHWR0 and transferredat TSW again. This function covers 3-
person 6-conference. / 2. Tone GeneratorFunction / Tone GeneratorFunction presents 4 kinds
of the call progress tone and 2 channels of the DTMFtone toHWS0 of the downhighway. /
(d) Timer Counter / The timer counter, its basicfrequencyis
16.384 MHz, iscomposed of Watchdog timer, and other kinds of
timer. /
(e) Parallel I/O Port / Gate Array(IC101) iscomposed of system
port and port group #A~#F, which can be ableto access by8bit,
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and of port group #G, which can be ableto access by4bit. /
(f) PCMHighwayController Function / Thisfunction generates the
basictiming of PCMHighway, and eight channel pulses.
Following are the clocks generated. / CHS0 ~ 4: 128, 64, 32, 16, 8
kHzChannel select signal / CP0 ~ 5: 8kHzSynchronous signal for
CODEC/
(g) APT Data Communication Circuit/ APT Data Communication
Circuitisacircuitwhich performs the serial/parallel conversion of
the control data between APT comm. Paths and the main
CPU(IC100). Thiscircuitcovers 4lines corresponding to each
extension, and 4lines are integrated into on Gate Array(IC101). / /
/ / / / /
(h) DPT Data Communication Circuit/ DPT Data Communication
Circuitisacircuitwhich has the following functions. Thiscircuit
covers 8lines corresponding to each extension, and 8lines are
integrated into one Gate Array(IC101).
1. B channel communication / The B channel data are transferredbetweenthe DPTcomm. Path
and the PCM highway. The transmitting capabilityis 64 kbps X2. / Note: B channel stands for
"BarerChannel", normallytransmitting the voice data. / 2. D channel communication / The data
are transferredbetweenthe DPTcomm. Pathand the HDLC controller, serial bus. The
transmitting capabilityis 16 kbps. Because the communication betweenHDLC controllerand
this circuit is done as 1 by1, the HDLC controllerswitches the communication extension every
for8 ms. / Therefore, the communication perone extension is done only8 ms at 64 ms cycles,
the actual transmitting capabilityis 2 kbps. / Note: D channel stands for"Data Channel",
transmitting CPU control data. / 3. C channel communication / The serial/parallel data
conversion is done betweenthe DPTcomm. Pathand the mainCPU data bus. The level (H orL)
transmission is onlypossible through the C channel. / Note: C channel stands for"Control
Channel". /
(i)HDLCController / HDLCcontroller isacircuitwhich functions
the data format conversion of the Dchannel between the DPT
comm. line installed with aGate Array(IC101) and the CPUdata
bus byfollowing the HDLCprotocol. The serial/parallel
conversion isdone at the same time. Though thiscircuit
communicates with 8channel of the DPT comm. circuit, since it
can communicate onlywith one channel at atime, as before
mentioned it, switches the communicating extension everyfor 8
ms. /
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2. ISDN Block
Composition: / ISDN I/FIC(IC500, IC501) / ISDN Transformer
(T500, T501) etc. / / CircuitOperation: / Thiscircuithas the S-Bus
interface circuitand the ISDN lower LAYER(LAYER1only)
control circuit. / The component switches Band Dchannel
between the S/Tinterface and the PCMHighwayI/F. /
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/ / / / / /
3. Expansion Block
Composition: / Thisiscomposed of the following circuits: / (a)
Current SupplyCircuit/ (b) Hook Detection Circuit/ (c) Ring Trip
Detection Circuit/ (d) Bell ringing section /
CircuitOperation: / (a) Current SupplyCircuit/ Current Supply
Circuitisconstant-current circuitwhich supplies the call current
to SLT. / With the telephone off hook, aDC loop isformed, and
current issupplied to the telephone. / Thiscircuitislimited to
about 25mAbyR610, D601 R614 and D602. / +24V R611
R610 Q602 RL60 L602 telephone L603 RL60
Q603 R614 R615 GND /
(b) Hook Detection Circuit/ When the telephone handset istaken
off, DC loop isformed and collector of Q604 change to Lfrom H.
And Gate Arraydetects off hook condition. / When the handset is
replaced back on hook, the DC loop isinterrupted and collector of
Q604 change to Hfrom L. / And Gate Arraydetects on hook
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condition. / Pulse dialing isainput either inthe on hook or off
hook condition, and the break number (on hook condition) is
counted and read as the dial number. /
(c) Ring TripDetection Circuit/ Thisisfor detecting off-hook of
SLT when the bell signalsare presented. /
(d) Bell ringing section / When the telephone isasignal line
telephone, extension calling isexecuted bymeans of aringing
signal. / When the ringing signal issupplied, RL60 turns ONand
the current flowsare as follows: / Bell transformer ringing
signal line RL60 L602 telephone L603 RL60 R632
GND Bell transformer /
/ / / / / / / / / / / / / / / / /
4. APT/DPT Circuit
Composition: / Q600, Q601, T600 etc. / / CircuitOperation: / The
circuitfunctions the wave shaping and the level conversion
between the date line from the telephone terminal and the Gate
Array(IC101), and supplies the current to the terminal through the
data line. / The data communication isdone through thiscircuit
with anykinds of the terminal whichever APT of DPT. / Thiscircuit
consists of the drive circuit(Q600, Q601 etc.)and the transformer
(T600). /
/ / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /
/ / / / /
5. Door phone Circuit
Door-Phone Interface Circuitisacircuitwhich functions the
interface between the door-phone and the PCMhighway, and is
composed of the following circuits. / / Composition: / (a) Circuit
for detection whether the door-phone isconnected or not. / (b)
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Current supplycircuit / (c) Hook detection circuit/ (d) 2-4 lines
conversion circuit/ (e) A/Dand D/Aconversion circuit(CODEC)
IC118 /
CircuitOperation: / (a) Circuitfor detection whether the Door-
Phone isconnected or not. / When the Door-Phone isnot
connected, base of Q105 ishigh. When corrector of Q105 islow,
input pinof G/A(IC101) islow. When the Door-Phone is
connected, base of Q105 islow. When corrector of Q105 ishigh,
input pinof G/A(IC101) ishigh. CPU(IC100) on 1APgets
information through IC101 whether the Door-Phone isconnected
or not. /
(b) Current SupplyCircuit/ Q106 supplies current to the Door-
Phone line through the transformer (T10). /
(c) Hook Detection Circuit/ When the call button of Door-Phone
isn't pushed, base of Q110 ishigh. When corrector of Q110 islow,
input pinof G/A(IC101) islow. When the call button of Door-Phone
ispushed, base of Q110 islow. When corrector of Q110 ishigh,
input pinof IC101 ishigh. CPU(IC100) on 1APgets information
through IC101 whether the call button ispushed or not. /
(d) 2-4 Lines Conversion Circuit/ Thiscircuitconverts 2-line
analogue signalsto 4-line signals. /
(e) A/D, D/AConversion Circuit/ Thiscircuitisfor converting the
analogue signalsfrom Door-Phone to the PCMdigital signalsto
present to the PCMhighway, and also converting the data on the
PCMhighwayinto the analogue signalsto the Door-Phone. This
circuithas the power downfunction and the u/Aconversion
function. /
/ / / / / / / / / / /
6. Door Opener Circuit
Thisisthe relaycircuitwhich controlsthe Door Opener
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connected externally. The control ismade bythe "DOPEN"signal.
One of thiscircuitare installed on acard. / / CircuitOperation: /
When CPU(IC100) make the "DOPEN"signal high, transistor
(Q111) controlsthe relay(RL10) ON. When CPU(IC100) make the
"DOPEN"signal low, transistor controlsthe relayOFF.
/ / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /
/ / / /
7. DTMF Receiver Circuit
Composition: / DTMF Receiver IC(IC604, IC605) / 4to 1Analogue
Switches (IC602, IC603) / / CircuitOperation: / DTMF Receiver
Circuitisacircuitfor receiving the DTMF dialspresented bySLT.
/ Thiscircuitiscomposed of the 4to 1Analogue Switches (IC602,
IC603) and the DTMF Receiver IC(IC604, IC605). / Thiscircuitis
incorporated twolines on one card, each line isconnected
through the four extensions and the analogue switches (IC602,
IC603) to the DTMF receiver IC(IC604, IC605). / The received data
of DTMF receiver are read through the data bus bythe mainCPU
(IC100). /
8. Paging and Monitor Circuit
Composition: / CODECIC(IC109), T12 etc. / / CircuitOperation: /
The External HoldTone Circuitisacircuitwhich presents the hold
tone for the system. The analogue signalsfrom the tone sources
are changed to the digital ones byCODECIC(IC109) and
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