Toshiba FT-8859 Service Manual
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Toshiba FT-8859 Service Manual

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Teléfonos inalámbricos
Contenido y precauciones de seguridad
Controles de operación
FT-8859
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-8859

  • Page 1 Teléfonos inalámbricos Contenido y precauciones de seguridad Controles de operación FT-8859 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. 2B0-9907 SERVICE MANUAL CORDLESS TELEPHONE FT-8859 PUBLISHED IN JAPAN, Oct., 1999...

  • Page 3: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ........................... 1 OPERATING CONTROLS .......................... 2 ALIGNMENT PROCEDURE ........................3 BLOCK DIAGRAMS............................ 9 SCHEMATIC DIAGRAMS ......................... 11 TROUBLESHOOTING HINTS ........................16 IC AND TRANSISTOR VOLTAGE CHART ....................23 SEMICONDUCTOR LEAD IDENTIFICATION................... 28 ELECTRICAL PARTS LOCATION......................30 WIRING DIAGRAMS..........................33 EXPLODED VIEW AND MECHANICAL PARTS LIST ................

  • Page 4: Operating Controls

    OPERATING CONTROLS HANDSET CONTROLS AND FUNCTIONS Antenna Dot matrix display VOL/RING Button Number of calles Date Time Liquid Crystal Display (LCD) Caller's telephone number REDIAL Button SELECT Button Caller's name TALK Button CID (Caller ID) Button Dialpad (TONE) Button (0~9, and # buttons) MEM (Memory) Button PAUSE Button...

  • Page 5: Alignment Procedure

    ALIGNMENT PROCEDURE Test Mode For Base Unit Press the "  " and "#" keys at the same time about 2 seconds while turning the power on, the confirmation beep will sound to indicate that the unit is in the test mode. 1.
  • Page 6 Test Mode For Handset Unit 7R#SHUIRUP#WKH#7(67#PRGH/#WXUQ#WKH#SRZHU#21#E\#SUHVVLQJ#WKH#³  ´#DQG#³&´#EXWWRQV#DW#WKH#VDPH#WLPH1 When entered the TEST mode, the bell rings and the unit enters TEST mode 1. (Refer to the following table.) 1. To change the TEST mode: Press the number key for the corresponding TEST mode. (Refer to the following table) 2.
  • Page 7 Base Unit Transmitter Section AF GEN. BASE Unit Power Test Point Connections Dummy Load Meter (600-ohm) DC IN TEL Line 9V Jack Jack 1kHz 77.6mV Test Point Frequency Counter AC 120V Adapter 60Hz Deviation Meter Preset Place the Base unit in VCO/TX FREQ. ADJ mode in accordance with the procedure on page 3. Alignment Procedure step Adjutment...
  • Page 8 Receiver Section Connections BASE Unit AC Voltmeter RF SG Dummy Load (600-ohm) TEL Line Test Point Jack DC Voltmeter Terminal DC IN 9V Jack AC 120V 60Hz Adapter Preset Place the Base unit in RX SENS mode (step 4) in accordance with the procedure 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 Meter DC 3.8V Preset a) Connect the handseet RF unit to the handset main unit. b) Connect DC power supply to battery connector on the handset unit.
  • Page 10 Receiver Section Connection HANDSET Unit AC Voltmeter RF SG Dummy Load (150-ohm) Test Point Connector DC Power Supply J603 DC Voltmeter Terminal Battery Connector DC 3.8V Preset a) Connect the handset RF unit to the handset main unit. b) Connect DC power supply to battery connector on the handset unit. c) Turn the DC power supply ON while pressing “...

  • Page 11: Block Diagrams

    BLOCK DIAGRAMS Base Unit...
  • Page 12 Handset Unit...

  • Page 13: Schematic Diagrams

    SCHEMATIC DIAGRAMS Base Unit, Main...
  • Page 14 Base Unit, Key NOTES: 1. RESISTANCE VALUES ARE SHOWN IN OHMS UNLESS OTHERWISE NOTED. (K=KIRO OHM, M=MEG OHM)
  • Page 15 Handset...

  • Page 16: Troubleshooting Hints

    TROUBLESHOOTING HINTS 1. The bell does not ring. When the INTCOM key of See 2. The bell does not the base is pressed, does ring & page does not ring. the ringer on the handset ring? When the TEL SG is joined Check IC4 and TEL with the base to make bell network circuit.
  • Page 17 2. The bell does not ring & page does not ring. Can the base and handset See 3. The base and handset be connected. cannot be connected. Press handset DIAL key When Check IC603. while in TALK MODE. handset is pressed, can the Can key touch sound be pulse output at pin 58 of heard from the ringer?
  • Page 18 3. The base and handset cannot be connected. Check whether the base is Check IC22 and its peripheral able to set in the test mode circuit. Check the TX POWER and Check base RF unit. the TX FREQUENCY on the base unit. Set the base in the test Check RT3, C234, R58 and Check whether there is a...
  • Page 19 Set the handset in the test Check whether there is a Check R634, R635, R636, mode 3, check whether 250 Hz data waveform at R632, R619, C610, C669 deviation of the TX data is C669. and RT603. app. 8 kHz Dev. Check handset RF unit.
  • Page 20 4. Will not dial out. (TONE) Check IC22, Q20 and their Check whether there is a peripheral circuits. DTMF waveform on Pin 60 of IC22. Check IC3, Q20 and their Check whether there is a peripheral circuits. DTMF waveform on Pin7 of IC3.
  • Page 21 5. TROUBLE WITH INTERCOM MODE 5-1. The voice from the Base unit cannot be heard on the Handset. Check whether there is an Check MC1 and IC32. audio waveform on Pin 4 of IC32. Check Pin 7 of IC32. 5-2. The voice from the Handset cannot be heard on the Base unit. Check whether there is an Check IC15.
  • Page 22 6. TROUBLE WITH SPEAKERPHONE MODE 6-1. The voice of the caller cannot be heard (INCOMING CALL). Check whether there is an Check IC3, RL1 and Q2. audio waveform on Pin 1 of IC3. Check whether there is an Check IC15. audio waveform on Pin 1 of IC15.

  • Page 23: 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 4.0-5.5 3.6-5.1 CLK(SIN) 3.9-4.0 3.5-4.4 CLK(SIN) 3.6-4.1 --/(PULSE) 3.6-4.1 --/(SIN) IC11 1.2-2.5 1.4-1.9 0.4-1.0 IC15 OPEN OPEN 0.1-4.7 0.1-4.4 (PULSE) IC18 OPEN...
  • Page 24 Unit[V] Unit[V] Ref No. PIN STBY TALK NOTE Ref No. PIN STBY TALK NOTE 0.0-4.9 0.0-4.6 CLK(SIN) 1.1-3.0 1.0-2.9 CLK(SIN) VCPU OPEN OPEN IC22 OPEN OPEN OPEN VCPU VCPU VCPU OPEN IC23 OPEN OPEN 4.8/0.0 0.0/0.0 TONE/PULSE IC22 4.8/0.0 4.5/0.0 RING0N/OFF OPEN 0.06-0.1...
  • Page 25 Unit[V] Ref No. PIN STBY TALK NOTE...
  • Page 26 Handset Unit[V] Unit[V] Ref. No. PIN STAND-BY TALK NOTE Ref. No. PIN STAND-BY 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 27 Unit[V] Unit[V] Ref. No. PIN STAND-BY TALK NOTE Ref. No. PIN STAND-BY 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 28 SEMICONDUCTOR LEAD INDENTIFICATION Base Unit Q1/Q2/Q6/Q20/Q21/Q25/Q26 : 2SC1623 D1/D3/D5/D6/D11/D12 D751/D755 : SML-310LT Q5 : 2SC2714 /D13/D14/D15/D16/D17 : 1N4148 D752/D753/D754 : SML-310MT Q7/Q8/Q23/Q28 : 2SA812(M) D2 : HZ33-2 D7 : HZ6C3 Anode Cathode D26 : HZ9A1 Anode B : Base E : Emitter Cathode C : Collector MC3361CDR2...
  • Page 29 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 30: Electrical Parts Location

    ELECTRICAL PARTS LOCATION Base Unit Main PCB...
  • Page 31 Base Unit Key PCB...
  • Page 32 Handset Main PCB...

  • Page 33: Wiring Diagrams

    WIRING DIAGRAMS Base Unit...
  • Page 34 Handset...

  • Page 35: Exploded View And Mechanical Parts List

    EXPLODED VIEWS AND MECHANICAL PARTS LIST Base Unit SPEAKER KEY PCB MAIN PCB RF MODULE (BASE) ANTENNA...
  • Page 36 Base Unit LOC. PART NO. REF. NO. DESCRIPTION RC008819 GNBZ358191A BUTTON, FUNCTION RC008412 GCAS142458Z CASE, BOTTOM RC008628 GCAS242890A CASE, TOP RC008414 HTML442750Z CHARGE TERMINAL C5191(PBP) RC005608 RCUN451804Z CUSHION NEOPRENE RC002384 LFUT428079Z FOOT BUMPON SJ-5916 1.6T RC005689 LHDZ453179Z HOLDER, MIC RC005444 HHDS431080B HOLDER, SPEAKER SUS304 CSP 0.8T 3/4H OR H...
  • Page 37 Handset RF MODULE (HANDSET) MAIN PCB ASSY...
  • Page 38 Handset LOC. PART NO. DESCRIPTION RC008346 RBLD442400Z BLIND RC008568 GNBZ442808Z BUTTON, FUNCTION (COMP) RC008634 GCAS342891Z CASE, FRONT RC008338 GCAS242332Z CASE, REAR RC008342 HTML442336Z CHARGE TERMINAL C2680(BSP) RC008703 GCAS457897Z COVER, ANTENNA ELASTOMER RC008702 GCAS357889Z COVER, BATTERY RC008347 RCUM441150Z CUSHION MOLTPRENE, 40x20x8 RC008348 RCUN442433Z CUSHION...

  • Page 39: 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 40 LOC. REF. PART NO. DESCRIPTION RC001811 BCAZ901016Z ELECTROLYTIC 100UF 6.3V M C-156 RC005202 BCML311045Z CERAMIC M/L (1608) TAPE 0.1UF 16V K B RC005205 BCML811035Z CERAMIC M/L (1608) TAPE 0.01UF 50V K B C102 RC001805 BCAZ811096Z ELECTROLYTIC 1UF 50V M C-156 C103 RC001794 BCAZ111016Z...
  • Page 41 LOC. REF. PART NO. DESCRIPTION C194 RC001805 BCAZ811096Z ELECTROLYTIC 1UF 50V M C-156 C195 RC005202 BCML311045Z CERAMIC M/L (1608) TAPE 0.1UF 16V K B C196 RC008731 BCXK311050Z CERAMIC M/L (2125) TAPE 1UF 16V Z F C197 RC005202 BCML311045Z CERAMIC M/L (1608) TAPE 0.1UF 16V K B C198 RC001805...
  • Page 42 LOC. REF. PART NO. DESCRIPTION C601 RC004347 BCXK514740Z CERAMIC M/L (2125) TAPE 0.47UF 25V Z F C602 RC008319 BCSH904796Z TANTALUM CHIP TAPE 4.7UF 6.3V M C-122 C603 RC008319 BCSH904796Z TANTALUM CHIP TAPE 4.7UF 6.3V M C-122 C605 RC005216 BCMM813304Z CERAMIC M/L (1608) TAPE 33PF 50V J CH C606 RC008731...
  • Page 43 LOC. REF. PART NO. DESCRIPTION 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 RC005214 BCMM812214Z CERAMIC M/L (1608) TAPE 220PF 50V J CH C653 RC005217 BCMM813314Z CERAMIC M/L (1608) TAPE 330PF 50V J CH...
  • Page 44 LOC. REF. PART NO. DESCRIPTION RC002236 BDAY0246003 AX TS 26+ 1N4148 T-77 RC008517 BDAY0492020 ZENER AX TS 26 + HZ9A1 TD D602 RC001826 BDAY0433001 RLS4148 TE11 D604 RC001826 BDAY0433001 RLS4148 TE11 D606 RC001826 BDAY0433001 RLS4148 TE11 D607 RC001826 BDAY0433001 RLS4148 TE11 D608 RC003195 BDAY0432004...
  • Page 45 LOC. REF. PART NO. DESCRIPTION J603 RC001653 BJKY0571001 JACK JK-571 M60-002-020-HKAD J751 RC008409 BJKY0943017 JACK JK-943 9604S-17F 17P COILS RC008281 BLBY1175001 COIL LB-1175 7002BE-A0026HM RC008397 BLZY0136100 INDUCTOR:MOLDED CHIP LZ-136 MLF1608K100KT 10UH RC004073 BLZY0051479 INDUCTOR:MOLDED LZ-051 SP0305-4R7K2 4.7UH RC004073 BLZY0051479 INDUCTOR:MOLDED LZ-051 SP0305-4R7K2 4.7UH RC008587 BLZY0181107...
  • Page 46 LOC. REF. PART NO. DESCRIPTION RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1/16W J TAPING RC008479 BRFC161844Z CARBON FIXED CHIP 180K 1/16W J TAPING RC008479 BRFC161844Z CARBON FIXED CHIP 180K 1/16W J TAPING RC005242 BRFC161044Z CARBON FIXED CHIP 100K 1/16W J TAPING RC005242 BRFC161044Z CARBON FIXED CHIP...
  • Page 47 LOC. REF. PART NO. DESCRIPTION RC005260 BRFC166834Z CARBON FIXED CHIP 68K 1/16W J TAPING RC005410 BRPA614744Z CARBON AX TS 26 470K 1/6W J TAPING RC005239 BRFC161014Z CARBON FIXED CHIP 100 1/16W J TAPING RC005410 BRPA614744Z CARBON AX TS 26 470K 1/6W J TAPING RC005240 BRFC161024Z CARBON FIXED CHIP...
  • Page 48 LOC. REF. PART NO. DESCRIPTION R139 RC005240 BRFC161024Z CARBON FIXED CHIP 1K 1/16W J TAPING R141 RC005248 BRFC162234Z CARBON FIXED CHIP 22K 1/16W J TAPING R142 RC005242 BRFC161044Z CARBON FIXED CHIP 100K 1/16W J TAPING R143 RC005251 BRFC163304Z CARBON FIXED CHIP 33 1/16W J TAPING R144 RC008027...
  • Page 49 LOC. REF. PART NO. DESCRIPTION R253 RC005257 BRFC164734Z CARBON FIXED CHIP 47K 1/16W J TAPING R254 RC005240 BRFC161024Z CARBON FIXED CHIP 1K 1/16W J TAPING R259 RC005248 BRFC162234Z CARBON FIXED CHIP 22K 1/16W J TAPING R260 RC002327 BRFC016804Z CARBON FIXED CHIP 68 1/10W J TAPING R263 RC004174...
  • Page 50 LOC. REF. PART NO. DESCRIPTION R626 RC005240 BRFC161024Z CARBON FIXED CHIP 1K 1/16W J TAPING R627 RC005253 BRFC163324Z CARBON FIXED CHIP 3.3K 1/16W J TAPING R628 RC005288 BRFC168244Z CARBON FIXED CHIP 820K 1/16W J TAPING R629 RC008455 BRFC168204Z CARBON FIXED CHIP 82 1/16W J TAPING R630 RC005240...
  • Page 51 LOC. REF. PART NO. DESCRIPTION R674 RC008765 BRFC161004Z CARBON FIXED CHIP 10 1/16W J TAPING R675 RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1/16W J TAPING R676 RC008030 BRFC165624Z CARBON FIXED CHIP 5.6K 1/16W J TAPING R677 RC005311 BRFC160004Z CARBON FIXED CHIP 0 1/16W J TAPING R678 RC005311...
  • Page 52 LOC. REF. PART NO. DESCRIPTION WIRES RC008358 CUQB015033Z WIRE W-005 UL 1571 #26 7-150- 7 RED RC008359 CUQK015033Z WIRE W-005 UL 1571 #26 7-150- 7 BLK RC008405 CUQB009022Z WIRE W-005 UL 1571 #26 5- 90- 5 RED RC008406 CUQK009022Z WIRE W-005 UL 1571 #26 5- 90- 5 BLK W601 RC005699 CZDZ072147Z...

  • Page 53: Assembly Parts List

    LOC. REF. PART NO. DESCRIPTION RC008783 VNYL2304060 VINYL BAG 300x400x600x0.07T RC008353 VNYL3101000 VINYL BAG 100x100x0.1T RC008423 VNYL3102500 VINYL BAG 100x250x0.1T ASSEMBLY PARTS LIST LOC. REF. PART NO. DESCRIPTION RC008637 AC229BLBA BASE MAIN PCB ASSEMBLY RC008638 AC229BLBC BASE KEY PCB ASSEMBLY RC008639 AC229BLPA HANDSET MAIN PCB ASSEMBLY...

  • Page 54: Specifications

    SPECIFICATIONS MEASUREMENT CONDITIONS 1. Standard Voltage :Portable Unit ..DC 3.8V ± 0.025V :Base Unit ..AC 120V ± 3V 60Hz 2. Temperature :25°C ±5°C 3. Channel FCC CH Portable(TX Frequency) Base(TX Frequency) 902.052464MHz 925.997470MHz 902.102465MHz 926.047470MHz 902.152465MHz 926.097470MHz 902.202465MHz 926.147470MHz 902.252465MHz 926.197470MHz...
  • Page 55 BASE UNIT RECEIVER UNIT NOMINAL LIMIT 1. Sensitivity 12 dB SINAD with CCITT Filter -115 < -107 2. Frequency Response (Ref:1kHz) 0.3kHz -1.0 -5.0~+3.0 3.0kHz -8.0 -12.0~-4.0 3. Distortion at 1 mV RF Input < 5 4. S/N ratio at 1 mV RF Input with CCITT Filter 60 <...
  • Page 56 HANDSET RECEIVER UNIT NOMINAL LIMIT 1. Sensitivity 12 dB SINAD with CCITT Filter -115 < -107 2. Frequency Response (Ref:1kHz) 0.3kHz -3.0 -7.0~+1.0 3.0kHz -3.5 -7.5~+0.5 VOL. LOUD VOL.LOW+15 ±2 3. Audio Output Level VOL. HIGH VOL.LOW+10 ±2 VOL. MEDIUM VOL.LOW+5 ±2 VOL.

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