Toshiba ft-7807 Service Manual
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Toshiba ft-7807 Service Manual

Toshiba ft-7807 Service Manual

400 mah battery
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FILE NO. 2B0-9707
SERVICE MANUAL
CORDLESS TELEPHONE
FT-7807
PRINTED IN U.S.A., Oct., 1997

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  • Page 1 FILE NO. 2B0-9707 SERVICE MANUAL CORDLESS TELEPHONE FT-7807 PRINTED IN U.S.A., Oct., 1997...

  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ........................1 OPERATING CONTROLS ........................2 ALIGNMENT PROCEDURE ......................... 3 BLOCK DIAGRAMS ..........................7 SCHEMATIC DIAGRAMS ........................10 TROUBLESHOOTING HINTS ......................14 IC AND TRANSISTOR VOLTAGE CHART ..................20 SEMICONDUCTOR LEAD IDENTIFICATION ................... 25 ELECTRICAL PARTS LOCATION ..................... 30 WIRING DIAGRAMS ..........................

  • Page 3: Operating Controls

    Blinks while the handset is Cradle connecting to the base unit. ALL DIGITAL CALLER ID CORDLESS TELEPHONE 25 CH SCANNING FT-7807 Displayed during the caller ID review mode. Base antenna talk call id IN USE...

  • Page 4: Alignment Procedure

    ALIGNMENT PROCEDURE BASE UNIT / TRANSMITTER Test Equipment Required and Connections • Oscilloscope • Dummy Load, 50-ohm • Frequency Counter • AC Power Supply: 120V, 60Hz (With AC Adapter) • Digital Voltmeter B a s e S e t F r e q u e n c y C o u n t e r D u m m y L o a d ( 5 0 - o h m ) −...
  • Page 5 RECEIVER Test Equipment Required and Connections • SG: RF Signal Generator, 49.830 MHz, 49.160 MHz • Dummy Load, 600-ohm • Digital Voltmeter • AF SSVM • SINAD Meter B a s e S e t A F S S V M D u m m y L o a d ( 6 0 0 - o h m ) R F T e s t...
  • Page 6 HANDSET / TRANSMITTER Test Equipment Required and Connections • DC Power Supply, 3.6V • Digital Voltmeter F r e q u e n c y C o u n t e r H a n d s e t D u m m y L o a d ( 5 0 - o h m ) R F T e s t P o i n t −...
  • Page 7 RECEIVER Test Equipment Required and Connections • SG: RF Signal Generator, 46.770 MHz, 46.610 MHz • Dummy Load, 150-ohm • VTVM • DC Power Supply: 3.6 V • Digital Voltmeter • SINAD Meter H a n d s e t V T V M D u m m y L o a d R F T e s t...

  • Page 8: Block Diagrams

    BLOCK DIAGRAMS Base — 7 —...
  • Page 13 3. The base and handset cannot connect. B y u s i n g v o l t a g e c h a r t , C h e c k w h e t h e r t h e C h e c k t h e b a s e T X p o w e r .
  • Page 14 T h e n , c a n t h e s i n e w a v e C h e c k Q 2 a n d s u r r o u n d i n g b e s e e n a t t h e Q 2 C o l l e c t o r .
  • Page 15 6. Voice cannot be transmitted to other party (outgoing call). A t t h e M I C o f t h e h a n d s e t , C h e c k R 5 4 8 , R 5 3 4 , R 5 3 2 C h e c k t h e h a n d s e t M I C d o e s t h e b i a s v o l t a g e e x i s t ? a n d C 5 5 5 .
  • Page 16 7. The voice of the caller cannot be heard (incoming call). I n t h e h a n d s e t , w i t h t h e S G C h e c k t h e h a n d s e t I F C h e c k t h e h a n d s e t R X S P s t a n d a r d m o d u l a t i o n o f c i r c u i t ( a r o u n d P i n s 2 6 ~ 2 9...

  • Page 17: Ic And Transistor Voltage Chart

    IC AND TRANSISTOR VOLTAGE CHART Transistors Unit [V] Unit [V] Ref. Ref. STBY TALK Note STBY TALK Note 2.4~2.8 4.6~5 Q503 3~3.4 3.2~3.5 0.4~1.1 Q504 1.5~3.5 1.9~2.2 3~5.6 Q505 3~3.4 1.7~1.7 2.5~2.8 Q506 3.2~3.5 1.4~1.9 3.2~3.5 2.9~3.1 Q507 3.4~3.7 4.8~5 Q508 2.4~2.8 10.2...
  • Page 18 IC’S Unit [V] Unit [V] Ref. Ref. STBY TALK Note STBY TALK Note 0.8~3.7 0.8~3.7 4.6~5.1 0~4.8 0~4.8 0~4.8 0~4.8 1~1.8 1~2.5 1.8~2.3 4.7~5 4.7~5 3.8~4.1 3.8~4.1 4~4.4 3.4~3.8 0~4.8 3.4~3.6 0.3~0.5 0.3~0.5 0.3~0.5 0.3~0.5 0~4.8 0~4.8 —21—...
  • Page 19 Unit [V] Unit [V] Ref. Ref. STBY TALK Note STBY TALK Note 0.3~4.6 0.4~4.5 1.3~4.2 1.3~4.2 1.2~3.7 1.2~3.7 IC101 IC102 4.8-5 4.7~4.9 4.7~4.9 4.6~4.8 IC103 IC501 3.2~3.5 3.2~3.4 IC502 3.1~3.6 IC503 IC101 1~3.6 1~3.6 —22—...
  • Page 20 Unit [V] Unit [V] Ref. Ref. STBY TALK Note STBY TALK Note 1~3.3 0~3.3 0~3.3 0~3.3 0~3.3 0~3.2 1.4~1.6 1~3.3 1.4~1.6 1.4~1.6 2.4~2.6 2.2~2.8 2.9~3.3 0.6~1.2 1.2~1.7 0.9~1.5 IC503 IC504 1.2~1.7 2.8~3.6 0~3.3 0~3.3 2.2~2.6 2~2.4 2.9~3.5 0~3.3 0~3.3 2.3~2.8 0~3.3 2.3~2.8 2.2~2.9...
  • Page 21 Unit [V] Ref. STBY TALK Note IC504 1.4~1.6 3.4~3.8 IC505 3.1~3.5 2.2~2.4 —24—...

  • Page 22: Semiconductor Lead Identification

    SEMICONDUCTOR LEAD IDENTIFICATION B a s e U n i t D 2 / D 6 / D 1 0 5 / D 1 0 6 / D 1 0 7 / D 1 : H Z 7 C 3 D 1 0 8 / D 1 1 0 / D 1 1 1 : R L S 4 1 4 8 D 4 : H Z 6 C 3 D 5 / D 7 / D 8 / D 1 0 1 / D 1 0 2 /...
  • Page 23 I C 1 I C 2 M C 1 3 1 1 1 F B µP D 7 5 1 1 6 H 64 63 62 61 60 59 58 57 56 55 54 53 52 P131 L O 2 I n M i x 1 I n 1 P132 L O 2 O u t...
  • Page 24 H a n d s e t D 5 0 1 : K V 1 8 3 2 C D 5 0 2 : 1 N 4 1 4 8 D 5 0 3 / D 5 1 0 : H Z 6 C 3 A n o d e C a t h o d e C a t h o d e...

  • Page 27: Wiring Diagrams

    WIRING DIAGRAM Handset — 32 —...

  • Page 28: Exploded View And Mechanical Parts List

    EXPLODED VIEW AND MECHANICAL PARTS LIST Base Unit AT701 — 33 —...
  • Page 29 Base Unit LOC. PART NO. REF. NO. DESCRIPTION RC005527 GNBZ356907Z Button, Push RC005523 GCAS356903Z Case, Bottom RC005522 GCAS156902Z Case, Top RC005665 HTML457208Z Charge Terminal (Comp) C5191(PBP) RC005530 PLBS457401Z Label, ID RC005532 RCLR419970Z Cushion Bumpon RC002384 LFUT428079Z Foot Bumpon SJ-5916 1.6T RC005526 GCAS456906Z Hook...
  • Page 30 Handset B501 DP501 SP801 AT801 — 35 —...
  • Page 31 Handset LOC. PART NO. REF. NO. DESCRIPTION RC004280 HTML451205Z Antenna Contact C5191(PBP) RC005561 RBLD456730Z Blind RC005551 GNBZ356911Z Button, Function RC005552 GNBZ456912Z Button, Push RC005547 GCAS156908Z Case, Front RC005548 GCAS356909Z Case, Rear RC005671 HTML457209Z Chage Terminal C2680(BSP) RC005672 HTML457210Z Charge Terminal C2680(BSP) RC005549 GCAS356910Z...

  • Page 32: 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 ±1...
  • Page 33 LOC. PART NO. DESCRIPTION RC004492 BCUA818204Z CERAMIC 82PF 50V J CH RC004608 BCUB312245Z CERAMIC 0.22UF 16V K B RC004500 BCUB812235Z CERAMIC 0.022UF 50V K B RC004561 BCUB813935Z CERAMIC 0.039UF 50V K B RC004945 BCAP111016Z ELECTROLYTIC 100UF 10V M C-130 RC004562 BCUB814725Z CERAMIC 0.0047UF 50V K B...
  • Page 34 LOC. PART NO. DESCRIPTION RC004740 BCUE813091Z CERAMIC 3PF 50V C CJ RC004496 BCUB811025Z CERAMIC 0.001UF 50V K B RC004659 BCXB811025Z CERAMIC 0.001UF 50V K B RC004659 BCXB811025Z CERAMIC 0.001UF 50V K B RC004497 BCUB811035Z CERAMIC 0.01UF 50V K B C101 RC005512 BCKB131025Z CERAMIC...
  • Page 35 LOC. PART NO. DESCRIPTION C527 RC004497 BCUB811035Z CERAMIC 0.01UF 50V K B C528 RC004481 BCUA811514Z CERAMIC 150PF 50V J CH C529 RC001045 BCEQ311006Z ELECTROLYTIC 10UF 16V M C-125 C530 RC004497 BCUB811035Z CERAMIC 0.01UF 50V K B C531 RC004497 BCUB811035Z CERAMIC 0.01UF 50V K B C532 RC004494...
  • Page 36 LOC. PART NO. DESCRIPTION C574 RC004659 BCXB811025Z CERAMIC 0.001UF 50V K B C576 RC004977 BCUC811591Z CERAMIC 1.5PF 50V C CK C577 RC004494 BCUB511045Z CERAMIC 0.1UF 25V K B C578 RC004497 BCUB811035Z CERAMIC 0.01UF 50V K B C579 RC004496 BCUB811025Z CERAMIC 0.001UF 50V K B C580 RC003247...
  • Page 37 LOC. PART NO. DESCRIPTION FILTERS RC004640 BFLY0778001 FL-778 B803D-1087RX RC002479 BFLY0048001 CERAMIC FL-048 SFE10.7MS2-M RC004638 BFLY0743001 CERAMIC FL-743 LTW33-455D RC004639 BFLY0766001 FL-766 B803D-1077TX FT501 RC004638 BFLY0743001 CERAMIC FL-743 LTW33-455D FT502 RC004664 BFLY0767001 FL-767 SH829D-1079RX FT503 RC002479 BFLY0048001 CERAMIC FL-048 SFE10.7MS2-M FT504 RC004397 BFLY0742001 FILTER...
  • Page 38 LOC. PART NO. DESCRIPTION L503 RC005541 BLZY0080278 INDUCTOR LZ-080 0.27UH K TAPE L504 RC004249 BLZY0041229 INDUCTOR LZ-041 2.2UH K L505 RC004668 BLBY1108001 COIL LB-1108 291XCAS-9462IB L506 RC005541 BLZY0080278 INDUCTOR LZ-080 0.27UH K TAPE L507 RC004400 BLZY0041109 INDUCTOR LZ-041 1UH K L508 RC004401 BLZY0041398...
  • Page 39 LOC. PART NO. DESCRIPTION RC004535 BRFX013334Z CARBON 33K 1/10W J BULK RC004513 BRFX011034Z CARBON 10K 1/10W J BULK RC004534 BRFX013324Z CARBON 3.3K 1/10W J BULK RC004546 BRFX016834Z CARBON 68K 1/10W J BULK RC004746 BRFX016804Z CARBON 68 1/10W J BULK RC004745 BRFX015614Z CARBON 560 1/10W J BULK...
  • Page 40 LOC. PART NO. DESCRIPTION RC004514 BRFX011044Z CARBON 100K 1/10W J BULK RC004525 BRFX012224Z CARBON 2.2K 1/10W J BULK RC004572 BRFX013934Z CARBON 39K 1/10W J BULK RC004528 BRFX012254Z CARBON 2.2M 1/10W J BULK RC004535 BRFX013334Z CARBON 33K 1/10W J BULK RC004545 BRFX016824Z CARBON 6.8K 1/10W J BULK...
  • Page 41 LOC. PART NO. DESCRIPTION RC004645 BRFX011064Z CARBON 10M 1/10W J BULK RC004512 BRFX011024Z CARBON 1K 1/10W J BULK R100 RC004510 BRFX011004Z CARBON 10 1/10W J BULK R101 RC004512 BRFX011024Z CARBON 1K 1/10W J BULK R102 RC004512 BRFX011024Z CARBON 1K 1/10W J BULK R103 RC004512 BRFX011024Z...
  • Page 42 LOC. PART NO. DESCRIPTION R512 RC004538 BRFX014724Z CARBON 4.7K 1/10W J BULK R513 RC004551 BRFX181024Z CARBON 1K 1/8W J BULK R514 RC004543 BRFX015644Z CARBON 560K 1/10W J BULK R515 RC004513 BRFX011034Z CARBON 10K 1/10W J BULK R516 RC004519 BRFX011544Z CARBON 150K 1/10W J BULK R517 RC004551...
  • Page 43 LOC. PART NO. DESCRIPTION R558 RC005416 BRFX182244Z CARBON 220K 1/8W J BULK R559 RC004513 BRFX011034Z CARBON 10K 1/10W J BULK R560 RC004514 BRFX011044Z CARBON 100K 1/10W J BULK R561 RC005173 BRFX015604Z CARBON 56 1/10W J BULK R562 RC004509 BRFX010004Z CARBON 0 1/10W J BULK R563 RC004509...
  • Page 44 LOC. PART NO. DESCRIPTION SWITCHS RC003604 BSWY0755001 SW-755 SBHA12B-06 RC004253 BSWY0784001 SW-784 KSM0611B CRYSTALS RC004251 BQXY0573001 QX-573 10.240MHZ RC003599 BQXY0492001 QX-492 3.579545M X501 RC003746 BQXY0565001 QX-565 10.24MHZ X502 RC003720 BQXY0526001 QX-526 4.192M OTHER ELECTRICAL PARTS AD901 RC005139 BADY0213001 AC ADAPTOR TAC-8000 AT701 RC005176 BATY0292001...

  • Page 45: Assembly Parts List

    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. PART NO. DESCRIPTION RC005568 AD545ZLBA BASE MAIN ASSEMBLY RC005569 AD545ZLPA PORT MAIN ASSEMBLY — 50 —...

  • Page 46: Specifications

    SPECIFICATIONS MEASUREMENT CONDITIONS 1. Standard voltage: DC 3.6 V ±0.025 V Handset: AC 120 V ±3 V 60 Hz Base: 25°C ±5 °C 2. Temperature: 3. Channel: Handset (TX Frequency) Base (TX Frequency) 48.760 MHz 43.720 MHz 48.840 MHz 43.740 MHz 48.860 MHz 43.820 MHz 48.920 MHz...
  • Page 47 BASE UNIT RECEIVER Unit Nominal Limit µV 1. Sensitivity 12 dB SINAD 2. Bandwidth at 6 dB down −3.5 −7.5 ~ +0.5 3. Frequency Response 0.3 kHz −5 −9 ~ −1 3.0 kHz 4. Distortion at 1 mV Input 5. S/N ratio at 1 mV RF Input TRANSMITTER 1.
  • Page 48 HANDSET UNIT RECEIVER Unit Nominal Limit µV 1. Sensitivity 12 dB SINAD 2. Bandwidth at 6 dB down −3 −7 ~ +1 3. Frequency Response 0.3 kHz −6 −10 ~ −2 3.0 kHz 4. Audio Output Power at 1 mV Input 75 ~ 170 5.

  • Page 49: Appendix

    APPENDIX Deletion of the Caller ID memory To delete the Caller ID memory in the EEPROM, proceed with the following steps: 1) Set the T/P switch to TONE mode. 2) Turn on AC power while pressing the Page key. 3) Keep pressing the Page key for about 2 seconds, then the EEPROM will be initialized. —...
  • Page 50 MECHANICAL PARTS LIST TOSHIBA AMERICA CONSUMER PRODUCTS, INC. 82 TOTOWA ROAD, WAYNE, N.J. 07470 TOSHIBA HAWAII, INC. 327 KAMAKEE ST., HONOLULU, H.I. 96814...

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