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Toshiba FT-8989 Service Manual

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Teléfonos inalámbricos
Contenido y precauciones de seguridad
Controles de operación
FT-8989
Procedimientos de alineamiento
Diagrama a bloques
Diagramas esquemáticos
Procedimiento de localización de fallas
Carta de voltajes de transistores y de IC
Identificación de terminales de semiconductores
Localización de partes eléctricas
Diagramas de conexiones (alambrado)
Vistas explotadas y lista de partes mecánicas
Lista de partes
Lista de partes del ensamble
Especificaciones

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Summary of Contents for Toshiba FT-8989

  • Page 1 Teléfonos inalámbricos Contenido y precauciones de seguridad Controles de operación FT-8989 Procedimientos de alineamiento Diagrama a bloques Diagramas esquemáticos Procedimiento de localización de fallas Carta de voltajes de transistores y de IC Identificación de terminales de semiconductores Localización de partes eléctricas Diagramas de conexiones (alambrado) Vistas explotadas y lista de partes mecánicas...
  • Page 2 FILE NO. 2B0-9905 SERVICE MANUAL CORDLESS TELEPHONE FT-8989 PUBLISHED IN JAPAN, Sep., 1999...

  • Page 3: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ......................1 OPERATING CONTROLS ......................2 ALIGNMENT PROCEDURE ......................3 BLOCK DIAGRAMS ........................9 SCHEMATIC DIAGRAMS ......................12 TROUBLESHOOTING HINTS ....................18 IC AND TRANSISTOR VOLTAGE CHART ................25 SEMICONDUCTOR LEAD IDENTIFICATION ................32 ELECTRICAL PARTS LOCATION ..................... 35 WIRING DIAGRAMS .........................

  • Page 4: Operating Controls

    OPERATING CONTROLS HANDSET CONTROLS AND FUNCTIONS Dot matrix display VOL/RING ( ) button (up arrow button) Number of calles VOL/RING ( ) button Date Time (down arrow button) Liquid Crystal Display FLASH ( ) button (LCD) (Right arrow button) REDIAL ( ) button SELECT button Caller's telephone number...

  • Page 5: Alignment Procedure

    ALIGNMENT PROCEDURE Test Mode For Base Unit Press the “PAGE” key about 3.0 seconds while turning the power on. 1. To change the TEST mode: Press the “PAGE” key with T/P switch to PULSE position. 2. To change channel: Press the “PAGE” key with T/P switch to TONE position. If changing the step, the channel returns to the start channel.
  • Page 6 Test Mode For Handset Unit To Perform the TEST mode, turn the power ON by pressing the “ ” and “#” buttons at the same time. When entered the TEST mode, the bell rings and the unit enters TEST mode 1. (Refer to the follwing table.) 1.
  • Page 7 Base Unit Transmitter Section BASE Unit AF GEN. Test Point Power Connections Meter DC IN TEL Line 1kHz 77.5mV 9V Jack Jack Test Point Frequency Counter AC 120V Adapter 60Hz Deviation Mater Preset Place the Base Unit in VCO/TX FREQ.ADJ mode in accordance with the procedure on page 3. Alignment Procedure step Adjustment...
  • Page 8 Receiver Section Connections BASE Unit AC Voltmeter RF SG Dummy Load (600-ohm) TEL Line Test Point Jack DC Voltmeter DC IN 9V Jack Terminal AC 120V 60Hz Adapter Preset Place the Base Unit in RX SENS mode (step 4) in accordance with the precedure on page 3. Alignment Procedure step Preset to...
  • Page 9 Handset Unit Transmitter Section Connection HANDSET Unit AF GEN. Test Point Power Meter J603 Battery 1kHz 9mV MIC+Pin Connector Test Point Frequency Counter DC Power Supply Deviation Mater DC 3.8V Preset Place the Handset in VCO/TX FREQ. ADJ mode in accordance with the procedure on page 4. Alignment Procedure step Adjustment...
  • Page 10 Receiver Section Connections HANDSET Unit AC Voltmeter RF SG Dummy Load (150-ohm) Test Point Connector DC Power Supply J603 DC Voltmeter Battery Terminal Connector DC 3.8V Preset Place the Handset in RX SENS mode (step 4) in accordance with the procedure on page 4. Alignment Procedure step Preset to...

  • Page 11: Block Diagrams

    BLOCK DIAGRAMS Base Unit, Main...
  • Page 12 Base Unit, DSP...
  • Page 13 Handset...

  • Page 14: Schematic Diagrams

    SCHEMATIC DIAGRAMS Base Unit, Main...
  • Page 15 Base Unit, Key...
  • Page 16 Handset...

  • Page 17: Troubleshooting Hints

    TROUBLESHOOTING HINTS 1. The bell does not ring. See 2. The bell does not ring When the PAGE SW of the & page does not ring. base is pressed, does the ringer on the handset ring? When the TEL SG is joined Check IC1 and TEL network with the base to make bell circuit.
  • Page 18 2. The bell does not ring & page does not ring. Can the base and handset be See 3. The base and handset connected? cannot be connected. Press handset DIAL key When the key of the handset is Check IC603. while in TALK MODE.
  • Page 19 3. The base and handset cannot be connected. Check whether the base Check IC6 and its is able to set in the test peripheral circuit. mode 1. Check the TX POWER Check base RF unit. and the TX FREQUENCY on the base unit. Set the base in the test Check whether there is a Check RT3, R51, R52,...
  • Page 20 Press “3” key, check Check whether there is a C h e c k R 6 3 5 , R 6 3 6 , whether deviation of the 250 Hz data waveform at R 6 3 4 , R 6 3 2 , R 6 1 9 , TX data is app.
  • Page 21 4. Cannot make a phone call (pulse). Can the base and handset See 3. The base and handset be connected? cannot be connected. While in TALK MODE, press Check IC6. dial key of the handset. Check whether square waveform from pin 23 of IC6 is fed.
  • Page 22 6. Voice cannot be transmitted to other party (outgoing call). Can the base and handset be See 3. The base and handset connected? cannot be connected. The 1 kHz, 9.0mV sine Check Q604 and its wavefor m i s a p p l i e d t o peripheral circuit.
  • Page 23 7. The voice of the caller cannot be heard (incoming call). Can the base and handset be See 3. The base and handset connected? cannot be connected. The 1 kHz, 77.5mV sine Check the base TEL-line waveform is applied to TEL- circuit and REPLAY control line of the base, can the 1 kHz circuit.

  • Page 24: Ic And Transistor Voltage Chart

    IC AND TRANSISTOR VOLTAGE CHART Base Unit Unit[V] Unit[V] Ref. No. PIN STBY TALK NOTE Ref. No. PIN STBY TALK NOTE...
  • Page 25 Unit[V] Unit[V] Ref. No. PIN STBY TALK NOTE Ref. No. PIN STBY TALK NOTE IC201...
  • Page 26 Unit[V] Unit[V] Ref. No. PIN STBY TALK NOTE Ref. No. PIN STBY TALK NOTE OPEN OPEN OPEN OPEN OPEN IC202 IC202 3.6(AC) 3.6(AC) OPEN OPEN OPEN OPEN OPEN OPEN OPEN OPEN OPEN...
  • Page 27 Unit[V] Unit[V] Ref. No. PIN STBY TALK NOTE Ref. No. PIN STBY TALK NOTE IC202 OPEN OPEN OPEN IC208 OPEN OPEN OPEN OPEN OPEN OPEN OPEN IC204 OPEN 3.6(AC) 3.6(AC) OPEN 3.1(AC) 3.1(AC) 3.1(AC) 3.1(AC) IC207 OPEN 1.33.29 OPEN OPEN IC208 OPEN OPEN...
  • Page 28 Unit[V] Unit[V] Ref. No. PIN STBY TALK NOTE Ref. No. PIN STBY TALK NOTE 0.07 0.07 4.11 4.06 1.36 1.35 0.17 0.17 2.49 2.48 0.77 0.77 3.01 0.91 0.91 Q201 Q202 10.0 10.7 5.27 5.22 0.07 1.36 9.76...
  • Page 29 Handset Unit[V] Unit[V] Ref. No. PIN STBY TALK NOTE Ref. No. PIN STBY TALK NOTE 0-2.8 0-2.8 1.4-3.0 -0.2-2.6 0.4-0.8 0.4-1.5 0.4-1.5 0-2.0 0.3-1.9 0.3-1.9 SINE WAVE 0-3.0 0-3.0 0-3.0 SINE WAVE 0-3.0 0-3.0 PULSE LCD- IC601 0-1.5 2.9/0 SP-VOL2 0-3.0 MIC-ON 0-1.5...
  • Page 30 Unit[V] Unit[V] Ref. No. PIN STBY TALK NOTE Ref. No. PIN STBY TALK NOTE Q602 0-0.2 IC603 Q603 IC604 Q604 IC605 0-0.3 Q609 0-3.7 2.3-3.7 SINE WAVE 0-3.0 0-2.9 2.2-2.9 SINE WAVE 0-2.5 2.2-2.8 Q610 0-2.5 2.3-2.8 0-2.5 Q611 0-2.5 IC606 0-3.0 0-1.5...

  • Page 31: Semiconductor Lead Identification

    SEMICONDUCTOR LEAD IDENTIFICATION Base Unit D38 : RB420D D3/D35/D37/D207/D209 D1/D2/D5/D6/D7/D8/D10 /D213/D217/D218 : RLS4148 /D12/D13/D14/D15/D16/D18 Cathode D20/D214 : HZK6C /D19/D21/D30/D32/D34/D36: 1N4148 D4 : HZ7C3 D11 : HZ33CP Anode Cathode D17 : HZ4B1 Anode D22 : HZ7A1 D33 : HZ4C3 D205 :LTD-482P Anode (open) Cathode...
  • Page 32 IC9 : RH5VL40CA IC207 : RH5VL45AA MT88E43 UPD75116HGC St/GT VRef TRIGin TRIGRC IC201 TRIGout DATA MC34119D MODE DCLK OSCin FSKen OSCout PWDN P13/INT3 P140 P12/INT2 P140 P11/INT1 P142 P10/INT0 P143 PTH03 P130 PTH02 P131 PTH01 P132 IC202 D16559 CD11 IC204 CD12 TC74HC00AF CD13...
  • Page 33 Handset D602 / D604 D612 / D613 / D614 : PG3822K D610 / D611 : 1SS226 / D606 / D607 : RLS4148 Cathode / Anode D608 / D609 : HZK6C Anode Cathode Anode Cathode Cathode Anode D615 : RB420D Q600 / Q601 / Q602 / Q603 / Q604 / Q610 / Q611 / Q614 / Q616 / Q617 : 2SC1623 Cathode Q609 / Q613 : 2SA812(M)

  • Page 34: Electrical Parts Location

    ELECTRICAL PARTS LOCATION Base Unit Main PCB...
  • Page 35 Base Unit Key PCB...
  • Page 36 Handset Main PCB...

  • Page 37: Wiring Diagrams

    WIRING DIAGRAMS Base Unit...
  • Page 38 Handset...

  • Page 39: Exploded View And Mechanical Parts List

    EXPLODED VIEWS AND MECHANICAL PARTS LIST Base Unit SPEAKER KEY PCB MAIN PCB RF MODULE (BASE) ANTENNA...
  • Page 40 Base Unit LOC. REF. PART NO. DESCRIPTION RC008562 GNBZ442806Z BUTTON, FUNCTION RC008561 GCAS242805Z CASE, BOTTOM RC008560 GCAS242804A CASE, TOP RC008414 HTML442750Z CHARGE TERMINAL C5191(PBP) RC005608 RCUN451804Z CUSHION NEOPRENE RC005439 GCAS254442Z DISPLAY WINDOW PMMA RC002384 LFUT428079Z FOOT BUMPON SJ-5916 1.6T RC008013 RBLD459155A HIMELON RC008891...
  • Page 41 Handset RF MODULE (HANDSET) MAIN PCB ASSY...
  • Page 42 Handset LOC. REF. PART NO. DESCRIPTION RC008346 RBLD442400Z BLIND RC008568 GNBZ442808Z BUTTON, FUNCTION (COMP) RC008567 GCAS342807Z CASE, FRONT RC008338 GCAS242332Z CASE, REAR RC008342 HTML442336Z CHARGE TERMINAL C2680(BSP) RC008703 GCAS457897Z COVER ELASTOMER RC008702 GCAS357889Z COVER, BATTERY RC008347 RCUM441150Z CUSHION MOLTPRENE,40*20*8 RC008348 RCUN442433Z CUSHION NEOPRENE...

  • Page 43: Parts List

    PARTS LIST PRODUCT SAFETY NOTE : Products marked with a have special characteristics important to safety. Before replacing any of these components, read carefully the product safety notice of this service manual. Don’t degrade the safety of the product through important servicing. Symbol Symbol ±...
  • Page 44 LOC. REF. PART NO. DESCRIPTION RC008270 BCML811235Z CERAMIC M/L (1608) TAPE 0.012UF 50V K B RC008318 BCML815625Z CERAMIC M/L (1608) TAPE 0.0056UF 50V K B RC001809 BCAZ814786Z ELECTROLYTIC 0.47UF 50V M C-156 RC005205 BCML811035Z CERAMIC M/L (1608) TAPE 0.01UF 50V K B RC005202 BCML311045Z CERAMIC M/L (1608) TAPE...
  • Page 45 LOC. REF. PART NO. DESCRIPTION RC005205 BCML811035Z CERAMIC M/L (1608) TAPE 0.01UF 50V K B RC008548 BCEQ902216Z ELECTROLYTIC 220UF 6.3V M C-125 RC008731 BCXK311050Z CERAMIC M/L (2125) TAPE 1UF 16V Z F RC005204 BCML811025Z CERAMIC M/L (1608) TAPE 0.001UF 50V K B RC005215 BCMM812704Z CERAMIC M/L (1608) TAPE...
  • Page 46 LOC. REF. PART NO. DESCRIPTION C140 RC001802 BCAZ314706Z ELECTROLYTIC 47UF 16V M C-156 C142 RC005202 BCML311045Z CERAMIC M/L (1608) TAPE 0.1UF 16V K B C143 RC005205 BCML811035Z CERAMIC M/L (1608) TAPE 0.01UF 50V K B C203 RC001811 BCAZ901016Z ELECTROLYTIC 100UF 6.3V M C-156 C205 RC008146 BCML816825Z...
  • Page 47 LOC. REF. PART NO. DESCRIPTION C251 RC005202 BCML311045Z CERAMIC M/L (1608) TAPE 0.1UF 16V K B C252 RC008884 BCAZ904716Z ELECTROLYTIC 470UF 6.3V M C-156 C253 RC005202 BCML311045Z CERAMIC M/L (1608) TAPE 0.1UF 16V K B C600 RC005202 BCML311045Z CERAMIC M/L (1608) TAPE 0.1UF 16V K B C601 RC004347...
  • Page 48 LOC. REF. PART NO. DESCRIPTION C648 RC005216 BCMM813304Z CERAMIC M/L (1608) TAPE 33PF 50V J CH C649 RC008447 BCSH312296Z TANTALUM CHIP 2.2UF 16V M C-122 TAPE C650 RC005202 BCML311045Z CERAMIC M/L (1608) TAPE 0.1UF 16V K B C651 RC005214 BCMM812214Z CERAMIC M/L (1608) TAPE 220PF 50V J CH C652...
  • Page 49 LOC. REF. PART NO. DESCRIPTION RC002236 BDAY0246003 AX TS 26+ 1N4148 T-77 RC002236 BDAY0246003 AX TS 26+ 1N4148 T-77 RC002236 BDAY0246003 AX TS 26+ 1N4148 T-77 RC002236 BDAY0246003 AX TS 26+ 1N4148 T-77 RC002236 BDAY0246003 AX TS 26+ 1N4148 T-77 RC008273 BDAY0492036 ZENER AX TS 26 +...
  • Page 50 LOC. REF. PART NO. DESCRIPTION FT602 RC008280 BFLY0974001 CERAMIC FL-974 KBF-455RL-30K2 IC’s RC001640 BDEY1146001 PC817CD RC004870 BDEY2768003 MC3361CDR2 RC008278 BDEY3870003 LA8633VU-TLM RC004045 BDEY0861002 M5223FP-600C TAPE RC001640 BDEY1146001 PC817CD RC008550 BDDY0923001 UC2382 UPD75116HGC-196-AB8 RC005516 BDEY1058003 LC7366NM-TP-T2 RC008809 BDEY3544003 MT88E43ASR RC005075 BDEY2938003 RH5VL40CA-T1 IC201 RC005423 BDEY1533003...
  • Page 51 LOC. REF. PART NO. DESCRIPTION RC003031 BDBC1623648 DB-380 2SC1623-L6 T1B RC008275 BDBA0812695 DB-035 2SA812(M)-M6A T1B RC008275 BDBA0812695 DB-035 2SA812(M)-M6A T1B RC003031 BDBC1623648 DB-380 2SC1623-L6 T1B RC003031 BDBC1623648 DB-380 2SC1623-L6 T1B RC003031 BDBC1623648 DB-380 2SC1623-L6 T1B RC003200 BDBD0471111 DB-411 2SD471-L RC003031 BDBC1623648 DB-380 2SC1623-L6 T1B RC003031...
  • Page 52 LOC. REF. PART NO. DESCRIPTION RC005258 BRFC164744Z CARBON FIXED CHIP 470K 1/16W J TAPING RC008091 BRFC165614Z CARBON FIXED CHIP 560 1/16W J TAPING RC005281 BRFC162224Z CARBON FIXED CHIP 2.2K 1/16W J TAPING RC005311 BRFC160004Z CARBON FIXED CHIP 0 1/16W J TAPING RC005253 BRFC163324Z CARBON FIXED CHIP...
  • Page 53 LOC. REF. PART NO. DESCRIPTION RC005240 BRFC161024Z CARBON FIXED CHIP 1K 1/16W J TAPING RC005261 BRFC168224Z CARBON FIXED CHIP 8.2K 1/16W J TAPING RC005257 BRFC164734Z CARBON FIXED CHIP 47K 1/16W J TAPING RC008767 BRFC163344Z CARBON FIXED CHIP 330K 1/16W J TAPING RC005281 BRFC162224Z CARBON FIXED CHIP...
  • Page 54 LOC. REF. PART NO. DESCRIPTION R109 RC005242 BRFC161044Z CARBON FIXED CHIP 100K 1/16W J TAPING R110 RC005259 BRFC166814Z CARBON FIXED CHIP 680 1/16W J TAPING R111 RC005257 BRFC164734Z CARBON FIXED CHIP 47K 1/16W J TAPING R112 RC005256 BRFC164724Z CARBON FIXED CHIP 4.7K 1/16W J TAPING R113 RC005261...
  • Page 55 LOC. REF. PART NO. DESCRIPTION R158 RC005240 BRFC161024Z CARBON FIXED CHIP 1K 1/16W J TAPING R159 RC008735 BRFC166824Z CARBON FIXED CHIP 6.8K 1/16W J TAPING R161 RC005281 BRFC162224Z CARBON FIXED CHIP 2.2K 1/16W J TAPING R162 RC005281 BRFC162224Z CARBON FIXED CHIP 2.2K 1/16W J TAPING R163 RC005281...
  • Page 56 LOC. REF. PART NO. DESCRIPTION R214 RC008935 BRFC012294Z CARBON FIXED CHIP 2.2 1/10W J TAPING R215 RC005257 BRFC164734Z CARBON FIXED CHIP 47K 1/16W J TAPING R216 RC005257 BRFC164734Z CARBON FIXED CHIP 47K 1/16W J TAPING R217 RC005257 BRFC164734Z CARBON FIXED CHIP 47K 1/16W J TAPING R218 RC005257...
  • Page 57 LOC. REF. PART NO. DESCRIPTION R265 RC005257 BRFC164734Z CARBON FIXED CHIP 47K 1/16W J TAPING R266 RC005311 BRFC160004Z CARBON FIXED CHIP 0 1/16W J TAPING R267 RC005311 BRFC160004Z CARBON FIXED CHIP 0 1/16W J TAPING R268 RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1/16W J TAPING R269 RC005240...
  • Page 58 LOC. REF. PART NO. DESCRIPTION R616 RC005280 BRFC161534Z CARBON FIXED CHIP 15K 1/16W J TAPING R617 RC008454 BRFC165604Z CARBON FIXED CHIP 56 1/16W J TAPING R618 RC005242 BRFC161044Z CARBON FIXED CHIP 100K 1/16W J TAPING R619 RC005278 BRFC161244Z CARBON FIXED CHIP 120K 1/16W J TAPING R620 RC005240...
  • Page 59 LOC. REF. PART NO. DESCRIPTION R665 RC005281 BRFC162224Z CARBON FIXED CHIP 2.2K 1/16W J TAPING R666 RC005280 BRFC161534Z CARBON FIXED CHIP 15K 1/16W J TAPING R667 RC005258 BRFC164744Z CARBON FIXED CHIP 470K 1/16W J TAPING R668 RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1/16W J TAPING R669 RC005253...
  • Page 60 LOC. REF. PART NO. DESCRIPTION R760 RC002502 BRFC181044Z CARBON FIXED CHIP 100K 1/8W J TAPING R761 RC005257 BRFC164734Z CARBON FIXED CHIP 47K 1/16W J TAPING R762 RC005285 BRFC165634Z CARBON FIXED CHIP 56K 1/16W J TAPING R763 RC005257 BRFC164734Z CARBON FIXED CHIP 47K 1/16W J TAPING R764 RC005240...
  • Page 61 LOC. REF. PART NO. DESCRIPTION WIRES RC008406 CUQK009022Z WIRE W-005 UL 1571 #26 5- 90- 5 BLK RC008405 CUQB009022Z WIRE W-005 UL 1571 #26 5- 90- 5 RED RC008359 CUQK015033Z WIRE W-005 UL 1571 #26 7-150- 7 BLK RC008358 CUQB015033Z WIRE W-005 UL 1571 #26 7-150- 7 RED W202 RC004204...

  • Page 62: Assembly Parts List

    100X100X0.1T RC008423 VNYL3102500 VINYL BAG 100X250X0.1T ASSEMBLY PARTS LIST NOTE: Following part numbers are not available as replacement parts. Order parts necessary for repair or contact the Toshiba Factory Service Center. LOC. REF. PART NO. DESCRIPTION RC008508 AC222ZLBA MAIN PCB ASSEMBLY, BASE...

  • Page 63: Specifications

    SPECIFICATIONS MEASUREMENT CONDITIONS 1. Standard Voltage :Portable Unit ..DC 3.8V ± 0.025V :Base Unit ..AC 120V ± 3V 60Hz 2. Temperature ± 5 3. Channel FCC CH Portable(TX Frequency) Base(TX Frequency) 904.052470MHz 925.997470MHz 902.102465MHz 926.047470MHz 902.152465MHz 926.097470MHz 902.202465MHz 926.147470MHz 902.252465MHz 926.197470MHz...
  • Page 64 RECEIVER UNIT NOMINAL LIMIT 1. Sensitivity 12 dB SINAD with CCITT Filter -115 < -107 2. Frequency Response (Ref:1kHz) 0.3kHz -2.0 -6.0~+2.0 3.0kHz -6.0 -10.0~-2.0 3. Distortion at 1 mV RF Input < 5 4. S/N ratio at 1 mV RF Input with CCITT Filter 60 <...
  • Page 65 PORTABLE UNIT RECEIVER UNIT NOMINAL LIMIT 1. Sensitivity 12 dB SINAD with CCITT Filter -115 < -107 2. Frequency Response (Ref:1kHz) 0.3kHz -2.0 -5.0~+1.0 3.0kHz -4.0 -7.0~+1.0 3. Audio Output Level VOL. LOUD VOL. LOW +15±2 VOL. HIGH VOL. LOW +10±2 VOL.

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