Panasonic KX-T7603X User manual

ORDERNO. KMS0303669C8
Add on KeyModule
KX-T7603X
(for Asia, MiddleNearEast, Africa, Oceania, LatinAmerica, Russia,
Europe)
2003 PanasonicCommunicationsCo., Ltd. All rights reserved.
Unauthorizedcopying and distribution isaviolation oflaw.

IMPORTANT INFORMATIONABOUT LEAD FREE, (PbF),
SOLDERING
Ifleadfree solderwas usedinthe manufacture of this productthe printedcircuitboards will be
markedPbF.
Standardleaded, (Pb), soldercanbe usedas usual on boards without the PbF mark.
Whenthis mark does appearplease readand followthe special instructions describedinthis
manual on the use of PbF and howitmight be permissible to use Pbsolderduring service and
repairwork.
1. ABOUTLEADFREE SOLDER(PbF:Pbfree)
Note:
Inthe information below, Pb, the symbol forleadinthe periodic table of elements, will referto
standardsolderorsolderthatcontains lead.
We will use PbF whendiscussing the leadfree solderusedinourmanufacturing process which
is made from Tin, (Sn), Silver, (Ag), and Copper, (Cu).
This model, and others like it, manufacturedusing leadfree solderwill have PbF stampedon
the PCB. Forservice and repairwork we suggestusing the same type of solderalthough, with
some precautions, standardPbsoldercanalsobe used.
Caution
-PbF solderhas amelting pointthat is50° ~70° F, (30° ~40°C)
higherthanPbsolder. Please use asoldering iron with
temperaturecontrol and adjust itto700° ±20° F, (370° ±10°C). In
case ofusing high temperaturesoldering iron, please becareful
nottoheat too long.
-PbF solderwill tend tosplashifitisheatedmuchhigherthanits
melting point, approximately1100°F, (600°C).
-Ifyou must use Pbsolderon aPCB manufacturedusing PbF
solder, removeas muchoftheoriginal PbF solderas possibleand
besurethat anyremaining ismeltedprior toapplying thePb
solder.
-Whenapplying PbF soldertodoublelayeredboards, please check
thecomponentsidefor excess whichmayflowontotheopposite
side(See figure, below).

1.1. SUGGESTEDPbF SOLDER
There are several types of PbF solderavailable commercially. While this productis
manufacturedusing Tin, Silver, and Copper,
(Sn+Ag+Cu), you canalsouse Tinand Copper, (Sn+Cu), orTin, Zinc, and Bismuth, (Sn+Zn+Bi).
Please check the manufac
turer’s specific instructions forthe melting points of theirproducts and anyprecautions for
using theirproductwith other
materials.
The following leadfree (PbF) solderwire sizes are recommendedforservice of this product:
0.3mm, 0.6mm and 1.0mm.
1.2. HOWTO RECOGNIZE THATPbFREE SOLDERIS USED
PbF is stampedto showthatPbfree solderis used. (See the figure below.)
2. FORSERVICE TECHNICIANS
ICs and LSIs are vulnerable to static electricity.
Whenrepairing, the following precautions will helpprevent recurring malfunctions.
1. Covertheplasticparts boxes withaluminum foil.
2. Ground thesoldering irons.
3. Use aconductivemat on theworktable.
4. DonottouchICor LSI pinswithbarefingers.
3. SPECIFICATIONS

Jacks: TELJack
Dimensions: Low
Angle:
High
Angle:
255 (D)mm [Operate]×47 (W)mm ×94 (H)mm
206 (D)mm [Operate]×47 (W)mm ×178 (H)mm
213 (D)mm [Base]
Weight: 210g
Design and specifications are subjectto change without notice.
4. INSTALLING
ForKX-T7633 / KX-T7636
The Add-on KeyModule has 12 CObuttons. These buttons are usedto seize anoutside line,
make a call using One-touchDialing, oraccess certainfeatures.

1Openthe cover.
2Attachthe KX-T7603 to your
telephone with screws.
3 Insertthe flatcable into the
connector.

4 Close the cover.
5. DISASSEMBLY INSTRUCTIONS
1. Remove TwoScrews (A).
2. Remove the ConnectPlate.
3. Remove Screw(A).
4. Remove the Bottom Cabinetand Top Cabinet
(Base).

5. Remove TwoScrews (A).
6. Remove the Bottom Cabinet(Oper).
7. Remove the MainBoardfrom the Top Cabinet.
6. HOWTO REPLACE AFLATPACKAGE IC
6.1. PREPARATION
-PbF (:Pbfree) Solder
-Soldering Iron
TipTemperatureof700°F±20°F(370°C±10°C)
Note:Werecommend a30 to40 Watt soldering iron. Anexpert
maybeabletouse a60 to80 Watt iron wheresomeonewithless
experience couldoverheat and damagethePCB foil.
-Flux
RecommendedFlux:SpecificGravity0.82.
TypeRMA(lowerresidue, non-cleaning type)
Note:See ABOUT LEAD FREE SOLDER (PbF: Pb free) ().

6.2. PROCEDURE
1. Tack theflat pack ICtothePCB bytemporarilysoldering two
diagonallyopposite pinsinthecorrect positionson thePCB.
Be certaineachpinis locatedoverthe correctpadon the PCB.
2. Applyfluxtoall ofthepinson theIC.
3. Being careful tonotunsolderthetack points, slidethesoldering
iron along thetipsofthepinswhilefeeding enough soldertothe
tipsothat itflowsunderthepinsas theyareheated.
6.3. REMOVING SOLDERFROMBETWEENPINS
1. Add asmall amountofsoldertothebridgedpins.
2. Withahotiron, use asweeping motion along theflat partofthe
pintodrawthesolderfrom betweentheadjacentpads.

7. TROUBLESHOOTINGGUIDE
CROSS REFERENCE:
WAVEFORM ()
8. BLOCK DIAGRAM
9. CIRCUITOPERATIONS

9.1. LEDCIRCUITAND KEY INPUTCIRCUIT
CircuitOperation:
Adrive pulse wave, as inFig.1, is output byIC1. Thatsignal goes through the drive digital
transistorand connects the keybutton and LED cathode. Bypressing the key, the drive pulse
wave is input to Pin9~Pin11. Inorderto light the appropriate LED, the LED control portis turned
ON. ThatresultLED is litbythe pulse Driver.
10. ICDATA

PinNo. Terminal Name I/OSetting Description
1P12 O LED-K6
2P11 I Not usedVss Connection
3P10 I Not usedVss Connection
4P47/KR07 O LED-C1
5P46/KR06 O LED-C2
6P45/KR05 O LED-C3
7P44/KR04 O LED-C4
8P43/KR03 I Not usedVss Connection
9P42/KR02 I KEY-IN3
10 P41/KR01 I KEY-IN2
11 P40/KR00 I KEY-IN1
12 P31/BZO90 I Not usedVss Connection
13 IC0 I Vpp
14 X2 O OSC(4MHz)
15 X1 I OSC(4MHz)
16 Vss0 - Vss
17 Vdd0 - Vdd
18 XT2 - Not usedOpen
19 XT1 I Not usedVss Connection
20 RESET/ I Reset/
21 P30/TO90 I Not usedVss Connection
22 P27/TI80/TO80 I Not usedVss Connection
23 P26/INTP2/CPT90 I Not usedVss Connection
24 P25/INTP1 I Not usedVss Connection
25 P24/INTP0 I Not usedVss Connection
26 P23/SS20/ I Rx-RDY
27 P22/SI20/RxD20 I RxD
28 P21/SO20/TxD20 O TxD
29 P20/SCK20//
ASCK20 ISCK
30 P07 I Not usedOpen
31 P06 I Not usedOpen
32 P05 I Not usedOpen
33 P04 I Not usedVss Connection

PinNo. Terminal Name I/OSetting Description
34 P03 I Not usedVss Connection
35 P02 I Not usedVss Connection
36 P01 I Not usedVdd Connection
37 P00 I Not usedVdd Connection
38 Vdd1 - Vdd
39 Vss1 - Vss
40 P17 O LED-K1
41 P16 O LED-K2
42 P15 O LED-K3
43 P14 O LED-K4
44 P13 O LED-K5
11. TERMINALGUIDE OF ICs, TRANSISTORS AND
DIODES
12. CABINETAND ELECTRICALPARTS LOCATION

13. ACCESSORIES AND PACKINGMATERIALS

14. REPLACEMENTPARTS LIST
1. RTL(Retention TimeLimited)
Note:
Themarking (RTL)indicates that theRetention Timeislimitedfor
thisitem.
Afterthediscontinuation ofthisassemblyinproduction, theitem
will continuetobeavailablefor aspecificperiod oftime. The
retention period ofavailabilityisdependenton thetypeof
assembly, and inaccordance withthelawsgoverning parts and
product retention.
Aftertheend ofthisperiod, theassemblywill no longerbe
available.
2. Importantsafetynotice
Components identifiedbymarkhavespecial characteristics
importantfor safety. Whenreplacing anyofthese components,
use onlymanufacture's specifiedparts.

3. TheS markmeansthepartisoneofsomeidentical parts. For that
reason, itmaybedifferentfrom theinstalledpart.
4. ISO code(Example:ABS-HB) oftheremarks column shows
qualityofthematerial and aflameresisting gradeaboutplastics.
5. RESISTORS &CAPACITORS
Unless otherwise specified;
All resistorsareinohms( )K=1000 , M=1000k
All capacitorsareinMICRO FARADS ( F)P= F
*Type&WattageofResistor
14.1. CABINETAND ELECTRICALPARTS
Ref. No. PartNo. PartName& Description Remarks
1PSHR1253Z TRANSPARENTPLATE
2PSGD1064Z TEL. CARD
3PSKM1087Z1 CABINETBODY, APRON ABS-HB
4PSKK1041Z2 DOOR-LID, SHAFT COVER ABS-HB
5PSKM1086Z1 CABINETBODY, UPPER ABS-HB
6PSBX1090Z1 PUSH BUTTON, CO KEY ABS-HB
7PSSX1020Z KEYBOARD SWITCH
8PSKF1056Z1 CABINETCOVER, LOWER ABS-HB
9PSJE1033Z LEAD WIRE
10 PSKM1088Z1 CABINETBODY, UPPER BASE ABS-HB
11 PSYF1038Z1 LOWER CABINETCOVER ASS'Y PS-HB
11-1 PSHA1010Z RUBBER PARTS, FOOT
12 PSGT2185Z NAMEPLATE
13 PSMH1226Z ANGLE, CONNECTPLATE
14.2. PACKING MATERIALS

Ref. No. PartNo. PartName& Description Remarks
A1 XTW3+S12P TAPPING SCREW, STEEL
P1 PSZKT7603X GIFT BOXASS'Y
P2 XZB34X48A05 PROTECTION COVER
P3 XZB05X08A03 PROTECTION COVER
14.3. MAINBOARD PARTS
Ref. No. PartNo. PartName& Description Remarks
PCB1 PSWPT7603X P. C. BOARD ASS'Y(RTL)
(IC)
IC1 C2BBFD000372 IC
(TRANSISTORS)
Q1 B1GHCFCJ0001 TRANSISTOR(SI)
Q2 B1GHCFCJ0001 TRANSISTOR(SI)
Q3 B1GHCFCJ0001 TRANSISTOR(SI)
Q4 B1HBGBA00001 TRANSISTOR(SI)
Q5 B1HBGBA00001 TRANSISTOR(SI)
(DIODES)
D1~D12 PQVDBRPY1204 LED S
(CONNECTOR)
CN1 PSJS18A74Z CONNECTOR, 18 PIN
(COMPONENTPARTS)
RA1 D1H81224A010 RESISTOR ARRAY, 1.2k
(CRYSTALOSCILLATOR)
X1 PQVBCST400MG CRYSTALOSCILLATOR S
(RESISTORS)
R1 ERJ3GEYJ220 22
R2 ERJ3GEYJ151 150
R3 ERJ3GEYJ220 22
R4 ERJ3GEYJ151 150
R5 ERJ3GEYJ220 22
R6 ERJ3GEYJ151 150
R10 ERJ3GEYJ104 100k
R11 ERJ3GEYJ101 100
R12 ERJ3GEYJ101 100
R13 ERJ3GEYJ101 100
R14 ERJ3GEYJ101 100
R15 ERJ3GEYJ103 10k
R16 ERJ3GEYJ563 56k
(CAPACITORS)
C1 ECUV1C104ZFV 0.1
C2 F2G0J1010014 100
C3 ECUV1H103KBV 0.01 S

Ref. No. PartNo. PartName& Description Remarks
15. FORTHE SCHEMATICDIAGRAM
Note:
1. DC voltagemeasurements aretakenwithanoscilloscopeor a
testerwithaground.
2. Theschematicdiagramsand circuitboard maybemodifiedat any
timewiththedevelopmentofnewtechnology.
16. SCHEMATICDIAGRAM
17. WAVEFORM
18. PRINTEDCIRCUITBOARD
18.1. COMPONENTVIEW
18.2. BOTTOMVIEW
Y / KXT7603X /

B5
A3
A4 A1
A2
B4
B3
Q4
Q3
Q2
Q5
E2
E1
R15
E3 11
1
44
IC1
34
12
DX1
RA1
R4
R3
R2
R1
B6
Q1 B1
R6
R5 R7
18 2
1
CN1
DG C4 R17
R16
PSUP1378Z PbF
17
D3V C5
C3
R8
R9
R11
R12
R13
R14
R10
C2
C1
B2
Marked PbF

IC1 CPU
ROM F 16kB
RAM F 512B
GND CN1
TO
DPT
SCLK, TxD, RxD,BUSY
RESET
56k
X1
4MHz
Function Key 12
LED drive
Q1~3
LED drive+
Key-out
Q4, Q5
Key-out
Key-in
OPDET(TO DPT)
LED
CO1~12 (2color)
+3.3V
KX-T7603X : BLOCK DIAGRAM

D1
CO1
D2
CO2
D3
CO3
D4
CO4
D5
CO5
D6
CO6
D7
CO7
D8
CO8
D9
CO9
D10
CO10
D11
CO11
D12
CO12
1
2
3
4
R1
22
R2
150
R3
22
R4
150
R5
22
R6
150
Q1 1
43
2
5
Q2 1
43
2
5
Q3 1
43
2
5
SW1
CO1
SW2
CO2
SW3
CO3
SW4
CO4
SW8
CO8
SW7
CO7
SW6
CO6
SW5
CO5
SW9
CO9
SW10
CO10
SW11
CO11
SW12
CO12
Q4
1
62
5
3
4
Q5
1
62
5
3
4
RA1
1.2K
1
2
3
45
6
7
8
DG
DG
D3V
D3V
D3V
DG
A1
A2
A3
A4
B1
B2
B3
B4
B5
B6
E1
E2
E3
TP16
TP3
TP7
TP10
TP6
TP8
TP9
TP17
TP18
TP19
TP20
R
G
G
R
G
R
G
R
R
G
G
R
G
R
G
R
G
R
G
R
G
R
G
R
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
KX-T7603X : MAIN BOARD (1/2)