Panasonic KX-TC1040LAB User manual

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Service Manual
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ORDERNO.KM40111725C3
TelephoneEquipment
lKX-TC1040LAB/KX-TC1040LAW
Cordless AnsweringSystem
BlackVersion
White Version
(forLatinAmerica)
©2001 Kyusyu MatsushitaElectronicsCO.,Ltd. All rightsreserved. Unauthorized copying and distribution isaviolation of law.
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5ADJUSTMENTS(BASEUNIT)
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Ifyourunithavebelowsymptoms,adjusteachitemusingremedy columnfromthetable.
Howtosetthetestmode.
CH25 TestMode
*Atthestep3,thetransmission frequencymaynotbethenormalvalue(about1/5times).Therefore,
ifthevalueisnotnormalinTXVCOAdjustment, TXFrequency Confirmation and LineInput
Modulation Adjustment,performthisprocedurefromthestep1again.
Whilepressing"S2",supplyDCvoltagetobaseunitby S3.Baseunit issettotestmodethenpress
"paging"keytwice.
SymptomRemedy
Thebaseunitdosenotrespondtoacall fromhandset.Makeadjustmentsinitem(A)
Thebaseunitdosenottransmit orthetransmit frequencyisoff.Makeadjustmentsinitem(B)
Thetransmitfrequencyisoff.Makecomfirmationinitem(C)
Thetransmitpoweroutputislow, andtheoperating distance betweenbaseunitandhandsetislessthannormal.Makeadjustmentsinitem(D)
Thereception sensitivityof baseunitislowwithnoise.Makeadjustmentsinitem(E)
Thetransmitlevel islargeor small.Makeadjustmentsinitem(F)
Thereception level islargeor small.Makeadjustmentsinitem(G)
Theunitdoesnotlink.Makecomfirmationinitem(H)
CHTXFrequencyRXFrequency
CH2546.970MHz49.970MHz

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Theconnection ofadjustmentequipmentsareasshownin CIRCUITBOARD(BASEUNIT) ()
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6ADJUSTMENTS (HANDSET)
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Ifyourunithavebelowsymptoms,adjusteachitemusingremedy columnfromthetable.
Unitcondltion:
1.Removetheantennalead wirefromP.C.Boardof
handset.
2.PowerSupply:DC2.6V
3.Volume:HIGH(WhenP.C.Boradofhandsetisintestmode,volumecondition ismedium.
Press"LOUD"keyonce.)
4.SpeakerLoad:150
Howtosetthetestmode.
CH25 TestMode
SymptomRemedy
ThemovementofBattery LowIndicator iswrong.Makeconfirmation initem(A)
Thebaseunitdoesnotrespondtoacall fromhandset.Makeadjustmentinitem(B)
Thebaseunitdoesnottransmit orthetransmit frequencyisoff.Makeadjustmentinitem(C)
Thetransmitfrequencyisoff.Makeconfirmation initem(D)
Thetransmitpoweroutputislow,andtheoperating distancebetweenbaseunit andhandsetislessthannormal.Makeconfirmation initem(E)
Thereception sensitivityof baseunitislowwithnoise.Makeadjustmentinitem(F)
Doesnotlinkbetweenbaseunitandhandset.Makeconfirmation initem(G)
Thereception level ishighor low.Makeadjustmentinitem(H)
Thetransmitlevel ishighor low.Makeadjustmentinitem(I)
CHTXFrequencyRXFrequency
CH25 49.970MHz46.970MHz

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Theconnectionsofadjustmentequipmentsareasshown CIRCUITBOARD(HANDSET) ()
6.1TestModeFlowChartforMaintenanceoftheBASEUNIT
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6.1TestModeFlowChartforMaintenanceof
theBASEUNIT
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17 TROUBLESHOOTINGGUIDE
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DisplaySymptomRemedy
E1Theinitialization wastried,butit couldnotbedone.1.ConfirmFlashMemoryisequipped.
2.Confirmtheconnection ofFlashMemory.
3.ConfirmthepowersupplyofFlashMemory.
Whenno errorisfoundinabove-mentioneditems,FlashMemoryhasadefect.
Replace FlashMemory.
E2ThedefectofFlashMemorywasdetected.WhenFlashMemory hasthefataldetect,replace FlashMemory.
Thiserror hardlyoccurs.
E3,E9 Whentheadjustmentdata waschecked,anerror wasdetected.
(Theadjustmentdata maynotbewritten.)
1.Confirmtheadjustmentdata iswritten.
2.ConfirmFlashMemoryisequipped.
3.Confirmtheconnection ofFlashMemory.
4.ConfirmthepowersupplyofFlashMemory.
Whenno errorisfoundinabove-mentioneditems,FlashMemoryhasadefect.
Replace FlashMemory.
E4ThedefectofDSPwasdetected.
(ThechipinDSP mayhaveadefect.)
1.Confirmtheconnection ofDSP.
2.Confirmtheoscillation frequencyofDSP.
Whenno errorisfoundinabove-mentioneditems,DSP hasadefect.Replace DSP.
E5,E6 ThedefectofDSPwasdetected.WhenDSPhasthefatal defect,replace DSP.
Thiserror hardlyoccurs.
E7Thedefectofsynthesizedvoice wasdetected.
(Thesynthesizedvoice maynotbewritten.)
1.Confirmthesynthesizedvoice iswritten.
2.ConfirmFlashMemoryisequipped.
3.Confirmtheconnection ofFlashMemory.
4.ConfirmthepowersupplyofFlashMemory.
Whenno errorisfoundinabove-mentioneditems,FlashMemoryhasadefect.
Replace FlashMemory.

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18 TROUBLESHOOTINGGUIDE(BASE
UNIT)
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BaseUnit Condition:
1.Setthedialingmodeselectorto"Tone".
Checkthebaseunit asshownby followingbelowflowchart.
Whenchecking thebaseunit only.

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18.1TroubleshootingStep1:
18.2TroubleshootingStep2:
18.3TroubleshootingStep3:
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18.1TroubleshootingStep1:
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Thebaseunit doesnotflashInUse/Chargeindicator.
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18.2TroubleshootingStep2:
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Thechargeindicatordoesnotlight.
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18.3TroubleshootingStep3:
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1.TheINUSE/CHARGEindicatordoesnotflash.
2.Thebeepisnotheardfromthehandset.
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19 TROUBLESHOOTINGGUIDE
(HANDSET)
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Usetherightbaseunit forthistroubleshooting.Chargethebatteryofthehandseton thebaseunit.
Baseunit condition:
1.ConnecttheACAdaptor(PQLV1Z)plugintoDCINjackand theanotherend into apower
outlet(AC120V, 60Hz).
2.Connecttheloop simulator(DC48 V)toteljack.
Checkthehandsetasshownby followingbelowflowchart.
19.1TroubleshootingStep1:
19.2TroubleshootingStep2:
19.3TroubleshootingStep3:
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19.1TroubleshootingStep1:
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Thehandsetdoesnotbecomesthebatterysavemode.
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19.2TroubleshootingStep2:
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TheBeepisnotheardon theHandset.
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19.3TroubleshootingStep3:
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TheTALKindicatordoesnotflash(Checkthedatareception).
CheckPoint
Checkthesignalofreceiverdatacircuit RECEIVERDATACIRCUIT ().
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Stránka .1z1
5.8.2004file://C:\Documents%20and%20Settings\Admin\Plocha\SCHÉMATA\VIDEA\PANAS...

3.0kHz/devi
8V
1kHz
3.1kHz/devi
1kHz
TX SIGNAL
RX SIGNAL
300mV
(-20dBm)
150mV
(-26dBm)
350mV
(-16dBm)
130mV
(-27dBm)
800mV
8V
(-9dBm)
400mV
(-15dBm)
IC801
IC802

300mV
(TX)
1kHz
-25dBm/600
(RX)
300mV
(TX)
180mV
(RX)
8V 4.9V
250mV
(TX)
4.2V
4.2V
4.2V
4.2V 4.2V
4.2V
4.2V
4.2V
TX SIGNAL
Int'com TX RX SIGNAL Int'com RX
(1)(2)(3)(4)
(5)(6)(7)(8)(9)
(10)(11)(12)(13)(14)(15)(16)(17)
(18)
(19)(20)(21)
(22) (23) (24) (25)
(26)(27)(28)
(29)(30)(31)(32)(33) (34)(35)(36) (37)(38)(39)(40)
(41) (42) (43)(44)
IC702
IC703
IC701
IC301

1kHz 3kHz/devv
1kHz
-51dBm/600
(RX)
450mV
(RX)
200mV 800mV
(Int'com TX)
(Int'com RX)
1800mV
(TX)
(TX)
450mV
450mV
(RX)
100mV
8V
(RX)
8V
TX SIGNAL
Int'com TX RX SIGNAL Int'com RX
(1)(2)(3)(4)
(5)(6)(7)(8)(9)
(10)(11)(12)(13)(14)(15)(16)(17)
(18)
(19)(20)(21)
(22) (23) (24) (25)
(26)(27)(28)
(29)(30)(31)(32)(33) (34)(35)(36) (37)(38)(39)(40)
(41) (42) (43)(44)
0
IC401
KX-TC1040LAB/LAW : SCHEMATIC DIAGRAM (BASE UNIT) Main

TX DATA
DC
50Ω
AC(RF)
SEND
1.969
1.973
DC 2.596V TALK
2.613V STBY
AC(AF)
AC(AF)
AC(AF)
AC(AF)
AC(AF)
25.53V
255mV
AC(AF)
DC
AC(AF)
BETWEEN
BOTH
TERMINALS
2.046
2.05
DC
AC(RF)
SEND
SEND
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13)
IC301
IC101