Toshiba FT-8508 Service Manual Download Page 3

Page: 3 / 71

— 2 —

OPERATING CONTROLS

BASE UNIT CONTROLS

HANDSET CONTROLS

Summary of Contents for FT-8508

Page 1: ...SERVICE MANUAL PUBLISHED IN JAPAN Jun 1998 FILE NO 2B0 9804 FT 8508 CORDLESS TELEPHONE ...

Page 2: ...ve circuitry etc may alter the safety characteristics of these models and potentially create a hazardous situation for the user Any design alterations or additions will void the manufacturer s warranty and will further relieve the manufacturer of responsibility for personal injury or property damage resulting therefrom 2 PRODUCT SAFETY NOTICE Many electrical and mechanical parts in this chassis ha...

Page 3: ... 2 OPERATING CONTROLS BASE UNIT CONTROLS HANDSET CONTROLS RS YZ 1 2 ...

Page 4: ... data 2 Bell rings when sensing SQ 3 Every pushing of FLASH key makes tone change In the case of Dual Tone changes as 1 2 3 4 5 6 7 8 9 0 1 DTMF Frequency ROW1 697 ROW2 770 ROW3 852 ROW4 941 COL1 1209 COL2 1336 COL3 1477 4 Bell rings when the received data are 0000 250Hz 5 Charge LED lights when detecting Charge ON Channel rotation 19 20 21 40 1 2 3 4 5 37 38 39 40 STEP FUNCTION KEY START CH TX CO...

Page 5: ...CH TX CONT SC TX MUTE RX MUTE CONV REMARKS 1 VCO TX FREQ ADJ 1 21 L H H L H 2 TX MOD CHECK 2 21 L H L L L 3 TX DATA 3 21 L H L L L 1 4 RX SENS 4 21 H H L H L 5 SQ SENS 5 21 L H L A L 6 RECEIVE DATA CHECK 6 21 L H L L H 2 7 BELL 7 21 H L L L H 3 8 BATTERY LOW CHECK 8 21 H L L L H 4 9 CHARGE CHECK 9 21 H L L L H 5 10 DUPLEX 0 21 L H H H L A Squelch ON is H or Squelch OFF is L 1 In the TEST mode 3 00...

Page 6: ...926 893873 MHz 3 RT2 TX Modulation Press the 2 key to enter the TEST Mode 2 Connect the AF Generator to the TEL Line Jack on the Base Main PCB Make sure that the output is 1 kHz 61 0 mV from the AF Generator Connect the Deviation Meter to the RF test point on the Base RF PCB Adjust RT2 to indicate 8 kHz Dev Alignment Point Location on Base Main PCB and Base RF PCB Power Meter Frequency Counter Dev...

Page 7: ...tage Connect the RF Signal Generator to the RF test point on the Base RF PCB Make sure that the frequency is 902 984676 MHz Connect the AC Voltmeter across a 600 ohm dummy to the Telephone Line Jack Adjust RT1 for a 218 mV reading on the AC voltmeter 3 SG 7 dBµV No modulation VR201 SQ Point Press the 5 key to enter the TEST Mode 5 Make sure that the frequency of RF SG output is 902 984676 MHz Adju...

Page 8: ... frequency is 903 085147 MHz 3 VR601 TX Modulation Press the 2 key to enter the TEST Mode 2 Connect the AF Generator to the MIC Connector Make sure that the output is 1 kHz 11 0 mV from the AF Generator Connect the Deviation Meter to the RF test point on the handset RF PCB Adjust VR601 to indicate 8kHz Dev Alignment Point Location on Handset Main PCB and Handset RF PCB Power Meter Frequency Counte...

Page 9: ...ross a 150 ohm dummy to the SP Connector Adjust VR602 for a 60 mV reading on the AC Voltmeter 3 SG 7 dBµV 1 kHz 8 kHz deviation VR501 SQ Point Press the 5 key to enter the TEST Mode 5 Make sure that the frequency of RF SG output is 926 994344 MHz Adjust VR501 to turn to the point where the bell rings Alignment Point Location on Handset Main PCB and Handset RF PCB Preset Place the Handset in RX SEN...

Page 10: ...Handset Main 9 BLOCK DIAGRAMS ...

Page 11: ...Handset RF 10 ...

Page 12: ...Base RF 11 ...

Page 13: ...Base Main 12 13 ...

Page 14: ...SCHEMATIC DIAGRAMS Base Main 14 15 ...

Page 15: ...Base RF 16 17 ...

Page 16: ...Base Key 18 19 ...

Page 17: ...Handset Main 20 21 ...

Page 18: ...Handset RF 22 23 ...

Page 19: ... on the handset ring See 2 The bell does not ring page does not ring When the TEL SG is joined with the base to make bell signal is there pulse wave at Pin 4 of IC3 Check IC3 and TEL network circuit NG OK NG OK Is there pulse wave at Pin 33 OK NG Check R42 R80 R107 and C51 Check IC18 and its peripheral circuit ...

Page 20: ...8 of J1 change from high to low Press handset DIAL key while in TALK MODE Can key touch sound be heard from the ringer When the key of the handset is pressed can the pulse output at pin 38 of IC603 be seen NG NG Check IC603 OK At the Q606 collector can the pulse wave be seen NG Check R627 R629 Q605 and Q606 OK Check RINGER Y601 OK NG Check KEY RUBBER OK Check IC18 and its peripheral circuit ...

Page 21: ...he base unit NG Set the base in the test mode 3 check whether deviation of the TX data is app 7 kHz Dev NG OK OK OK Check whether there is a 250 Hz data waveform at Pin 1 of J1 NG Check base RF unit NG OK Check whether there is a 250 Hz data waveform at the Q2 collector Check RT1 Q2 and their peripheral circuits NG OK Check whether there is a 250 Hz data waveform at Pin 48 of IC18 Check Q5 Q6 and ...

Page 22: ... R619 R632 R634 R635 R636 and C611 OK Check handset RF unit Check whether the 250 Hz data wareform from Pin 1 of J601 is fed Place the handset on the base to charge about 5 seconds then connect again NG Check handset RF unit NG OK Check whether there is a 250 Hz data waveform at the Q601 collector OK Check VR602 Q601 and their peripheral circuits NG OK Check whether there is a 250 Hz data waveform...

Page 23: ...e is a DTMF waveform on Pin 11 of IC1 Check IC10 and IC1 NG OK Check whether there is a DTMF waveform on Pin 7 of IC2 Check IC2 NG Check whether there is a pulse on Pin 34 of IC18 NG OK Check the collector of Q8 NG Check IC18 Check Q8 and R82 OK Check RL1 ...

Page 24: ...e Handset cannot be heard on the Base unit Check MC401 and IC20 Check whether there is an audio waveform on Pin 23 of IC20 NG OK Check Pin 2 of IC15 Check IC15 Check whether there is an audio waveform on Pin 4 of IC15 NG OK Check IC20 Check whether there is an audio waveform on Pin 14 of IC20 NG OK Check W702 and SP701 ...

Page 25: ... NG OK Check IC20 Check whether there is an audio waveform on Pin 14 of IC20 NG OK Check W702 and SP701 Check IC16 RL1 and Q8 Check whether there is an audio waveform on Pin 1 of IC16 NG Check MC351 and IC20 Check whether there is an audio waveform on Pin 23 of IC20 NG OK Check IC1 Check whether there is an audio waveform on Pin 2 of IC1 NG OK Check IC2 Check whether there is an audio waveform on ...

Page 26: ... 0 E 0 0 C 0 0 Q18 B 0 7 0 7 E 0 0 C 0 0 Q19 B 0 0 7 E 0 0 C 0 0 Q20 B 0 0 7 E 0 0 C 8 2 8 2 Q22 B 0 0 E 0 0 C 0 0 Q23 B 9 0 9 0 E 0 0 Unit V Ref No Pin STBY TALK Note C 0 0 Q24 B 0 7 0 E 0 0 C 3 6 3 6 Q25 B 0 0 E 0 0 C 0 0 Q201 B 0 8 0 E 0 0 C 0 0 Q202 B 0 0 E 0 0 C 2 2 2 2 Q203 B 0 7 0 7 E 0 0 C 0 0 Q206 B 0 0 E 0 0 C 0 0 Q207 B 0 0 E 0 0 C 2 6 2 6 Q212 B 2 4 2 4 E 1 8 1 8 C 0 2 4 Q501 B 0 0 8 E...

Page 27: ...Unit V Ref No Pin STBY TALK Note 1 2 2 0 2 0 0 3 0 0 4 0 0 5 0 0 6 0 0 7 0 0 8 2 1 2 0 9 0 0 10 5 1 5 1 11 0 0 12 0 0 13 0 0 IC1 14 5 1 5 1 1 2 0 2 0 2 2 1 2 1 3 2 0 2 1 4 0 0 5 2 0 2 0 6 2 0 2 1 7 2 0 2 0 IC2 8 5 0 5 1 1 0 0 2 0 0 3 0 0 IC3 4 5 0 5 0 1 5 1 5 1 2 0 0 3 1 3 1 3 4 1 0 0 9 5 1 3 1 3 6 1 3 1 3 7 1 3 1 3 8 1 3 1 3 9 1 0 0 6 10 1 3 1 2 11 0 0 IC4 12 0 0 1 0 5 1 2 0 0 3 5 1 5 0 4 5 1 5 0...

Page 28: ... 3 6 0 5 10 3 7 3 7 11 4 6 4 6 12 0 0 13 0 0 14 0 0 15 1 7 5 0 16 5 1 5 0 17 0 0 18 5 1 5 0 IC18 19 4 6 4 6 Unit V Ref No Pin STBY TALK Note 20 0 0 21 0 0 22 0 1 6 23 5 0 2 1 24 0 0 25 0 0 26 0 0 27 0 0 28 0 0 29 0 0 30 0 0 31 0 0 32 0 0 33 5 1 5 0 34 0 0 35 2 7 0 8 36 0 4 6 37 0 4 6 38 0 0 39 0 0 40 0 0 41 0 0 42 0 0 43 0 4 6 44 0 4 5 45 5 1 5 0 46 1 4 0 47 1 4 0 48 2 4 2 6 49 0 0 50 0 0 51 0 0 5...

Page 29: ... 6 2 8 2 8 7 2 8 2 8 IC201 8 3 2 3 2 9 0 9 1 0 10 0 6 0 6 11 0 7 0 7 12 0 6 0 6 13 3 1 3 1 14 0 0 15 0 0 16 0 3 2 1 0 0 IC202 2 0 0 3 0 0 Unit V Ref No Pin STBY TALK Note 4 0 0 5 0 0 6 0 0 7 0 0 8 8 3 1 3 1 9 3 1 3 1 10 2 6 1 0 11 1 7 1 7 12 0 0 IC202 13 3 1 3 1 14 0 0 15 0 0 1 16 3 0 3 0 17 0 2 9 18 0 1 6 19 0 0 20 1 0 1 1 21 1 8 0 7 22 2 6 2 5 23 1 6 2 4 24 1 6 1 6 1 0 2 5 2 0 2 4 3 0 2 6 4 0 3 ...

Page 30: ...0 3 3 3 0 0 4 0 0 5 0 1 2 6 0 3 3 7 0 3 3 8 0 0 9 0 1 2 10 0 0 IC603 11 0 0 12 0 0 13 0 0 14 0 3 4 15 0 3 3 16 0 0 17 0 0 18 0 0 19 0 0 20 0 0 21 0 0 22 0 0 23 0 0 Unit V Ref No Pin STBY TALK Note 24 0 0 25 0 0 26 0 1 5 27 0 1 5 28 0 3 6 29 0 3 3 30 0 3 3 31 0 3 3 32 0 3 3 33 0 3 3 34 0 3 3 IC603 35 0 3 6 36 0 3 6 37 0 3 6 38 0 3 2 39 0 1 2 40 0 0 41 0 0 6 42 0 0 6 43 0 0 44 0 0 45 0 0 46 0 0 47 0...

Page 31: ...5 C B E B Base E Emitter C Collector Anode Cathode Anode Cathode Q201 2SC4095 B E E C Q18 2SD471 E B C D401 VR1102W D402 D403 D405 PG1102W Cathode Anode D24 HZK6C Cathode Anode Cathode Anode D9 RLS4148 D202 D203 1SV270 Cathode Anode D406 BRPG1202W Anode Cathode D23 HSM88WA Cathode Anode Cathode Q10 2SD1683 Q14 2SB1118 Q16 2SA950 E C B B Base C Collector E Emitter E C B B Base E Emitter C Collector...

Page 32: ... A15 P45 SCK2 P44 BZ P43 P42 P41 P40 P37 PTO P36 WTO V cc P35 PWC P34 EC P33 SI1 P32 SO1 P31 SCK1 P30 ADST V ss P63 INT3 P64 RST MOD0 MOD1 X0 X1 V ss P27 ALE P26 RD P25 WR P24 CLK P23 RDY P22 HRQ P21 HAK P20 BUFC 1 2 3 4 5 6 12 11 10 8 7 IC4 IR3N74AN Vcc MUTE EO EREC EPI VREF GND MUTE CO CREC ACP CPI 9 IC3 LTV 817 1 2 3 4 IC2 IC16 M5223L 1 8 1 2 3 4 5 6 7 14 13 12 11 10 9 8 IN OUT1 OUT IN1 OUT IN2...

Page 33: ...Vcc 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 IC20 MC33219AP 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 20 19 18 17 23 22 21 24 CP2 XDI CPT TLI TLO VB CT CD NC CPR RLI RLO Vcc TAO TAI MCO MCI VLC MUTE RXI RXO RAI RAO GND 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 NC Tx OUT Tx Vcc TxB TxE Tx GND PD1 Vcc Xin Xout XBo GND MIX REF MIX IN Rx Vcc RxB RxE Rx GND PD2 RST SI CPS Lock MIX OUT ...

Page 34: ... Input Filter Output Filter Input Demodulator Audio Crystal Osc Mixer Output Limiter Input Decoupling Quad Input Vcc 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 IC502 M64084AGP D608 LTL 16KPE Cathode Anotde 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 NC Tx OUT Tx Vcc TxB TxE Tx GND PD1 Vcc Xin Xout XBo GND MIX REF MIX IN Rx Vcc RxB RxE Rx GND PD2 RST SI CPS Lock MIX OUT D607 HZK6C D5...

Page 35: ...74APF P41 P42 P43 P44 Vss P30 SDK P31 S0 P32 S1 P33 EC P34 TO INT0 P35 INT1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 36 35 34 33 32 31 30 29 28 27 26 25 47 46 45 44 43 42 41 40 39 38 37 48 P40 P36 INT2 P37 BZ P00 L10 P01 L11 P02 L12 P03 L13 P04 L14 P05 L15 P06 L16 P07 L17 P10 P11 P24 P23 P22 P21 P20 P17 Vss P16 P15 P14 P13 P12 DTMF RST MDD0 MDD1 X0 X1 Vcc P50 X0A P51 Z1A P27 ...

Page 36: ...Base Main 41 ELECTRICAL PARTS LOCATION ...

Page 37: ...Base RF 42 ...

Page 38: ...Base Key 43 ...

Page 39: ...Handset Main 44 ...

Page 40: ...Handset RF 45 ...

Page 41: ...Base 46 WIRING DIAGRAMS ...

Page 42: ...Handset 47 W501 W 072147 J502 JK 736 9P J601 IC603 PORTABLE RF B501 PE1294DA TOP VIEW SOLDERING ...

Page 43: ...ase Unit Note To remove the RF Assembly from the unit remove four screws 24 Three screws 23 are used for fastening the Shield Cases 26 and 27 16 31 10 17 9 22 19 5 18 22 1 13 22 24 23 25 27 22 30 28 2 14 3 15 24 7 21 29 26 8 7 5 22 22 22 4 33 32 6 ...

Page 44: ...el ID 1 16 RC005329 PLBZ456718Z Label Indication 1 17 RC008821 PLBZ458611Z Label Indication 1 18 RC008818 GCAS458189Z LED Lens PMMA 1 19 RC005682 GCAS357878Z LED Lens PMMA 1 21 RC005688 KDPZ457908Z Plate Display PC 1 22 RC000941 SSCW802608N Screw P Tight Bind HD D2 6X8 NI 26 23 RC004893 SSCW802612N Screw P Tight Bind HD D2 6X12 NI 3 24 RC004028 SSCW802616N Screw P Tight Bind HD D2 6X16 NI 8 25 RC0...

Page 45: ...remove the RF Assembly from the unit remove four screws 69 Three screws 68 are used for fastening the Shield Cases 70 and 71 Handset 58 59 67 55 68 69 72 71 67 67 70 56 64 61 63 52 67 62 60 53 54 57 66 65 51 74 73 ...

Page 46: ...9Z Cushion NEOPRENE 1 61 RC008709 LHDZ456969Z Holder Mic EPDM 1 62 RC008704 GHDZ357890A Holder Speaker ABS 1 63 RC008710 LNBZ357895Z Key Rubber SI 1 64 RC008713 PLBZ458086Z Label Caution 1 65 RC008828 PLBS458612Z Label ID 1 66 RC008827 KDPZ458199Z Plate Display PMMA 1 67 RC000941 SSCW802608N Screw P Tight Bind HD D2 6X8 NI 8 68 RC004893 SSCW802612N Screw P Tight Bind HD D2 6X12 NI 3 69 RC004028 SS...

Page 47: ...C10 RC001632 BCXT813335Z CERAMIC 0 033UF 50V K B C11 RC000777 BCZY0120001 SEMI CONDUCTOR 0 022UF 18V CZ 120 C12 RC000752 BCKB821025Z CERAMIC 0 001UF 500V K YB B C13 RC002204 BCQL525645Z MYLAR 0 56UF 250V K C 167 C14 RC001068 BCXT811025Z CERAMIC 0 001UF 50V K B C16 RC001071 BCXT813325Z CERAMIC 0 0033UF 50V K B C17 RC002229 BCXT511045Z CERAMIC 0 1UF 25V K B C18 RC008731 BCXK311050Z CERAMIC 1UF 16V Z...

Page 48: ...50V K B C100 RC002651 BCAZ312216Z ELECTROLYTIC 220UF 16V M C 156 C101 RC001069 BCXT811035Z CERAMIC 0 01UF 50V K B C102 RC001794 BCAZ111016Z ELECTROLYTIC 100UF 10V M C 156 C103 RC001069 BCXT811035Z CERAMIC 0 01UF 50V K B C105 RC004412 BCXT312245Z CERAMIC 0 22UF 16V K B C106 RC004412 BCXT312245Z CERAMIC 0 22UF 16V K B C107 RC002229 BCXT511045Z CERAMIC 0 1UF 25V K B C108 RC002229 BCXT511045Z CERAMIC ...

Page 49: ...UF 50V Z F C201 RC005223 BCMS812091Z CERAMIC 2PF 50V C CK C202 RC005218 BCMM814091Z CERAMIC 4PF 50V C CH C203 RC005223 BCMS812091Z CERAMIC 2PF 50V C CK C204 RC005216 BCMM813304Z CERAMIC 33PF 50V J CH C205 RC005218 BCMM814091Z CERAMIC 4PF 50V C CH C206 RC005222 BCMS811091Z CERAMIC 1PF 50V C CK C207 RC005216 BCMM813304Z CERAMIC 33PF 50V J CH C208 RC005222 BCMS811091Z CERAMIC 1PF 50V C CK C209 RC0087...

Page 50: ...035Z CERAMIC 0 01UF 50V K B C249 RC005211 BCMM811204Z CERAMIC 12PF 50V J CH C250 RC005209 BCMM811002Z CERAMIC 10PF 50V D CH C251 RC005204 BCML811025Z CERAMIC 0 001UF 50V K B C252 RC005202 BCML311045Z CERAMIC 0 1UF 16V K B C253 RC005205 BCML811035Z CERAMIC 0 01UF 50V K B C254 RC005220 BCMM816804Z CERAMIC 68PF 50V J CH C255 RC005213 BCMM811804Z CERAMIC 18PF 50V J CH C256 RC005219 BCMM814704Z CERAMIC...

Page 51: ... 33PF 50V J CH C508 RC005222 BCMS811091Z CERAMIC 1PF 50V C CK C509 RC008755 BCMM815098Z CERAMIC 5PF 50V B CH C510 RC005216 BCMM813304Z CERAMIC 33PF 50V J CH C511 RC005212 BCMM811504Z CERAMIC 15PF 50V J CH C512 RC005205 BCML811035Z CERAMIC 0 01UF 50V K B C513 RC005205 BCML811035Z CERAMIC 0 01UF 50V K B C514 RC005205 BCML811035Z CERAMIC 0 01UF 50V K B C515 RC005205 BCML811035Z CERAMIC 0 01UF 50V K B...

Page 52: ... CERAMIC 0 01UF 50V K B C554 RC005220 BCMM816804Z CERAMIC 68PF 50V J CH C555 RC005213 BCMM811804Z CERAMIC 18PF 50V J CH C556 RC005219 BCMM814704Z CERAMIC 47PF 50V J CH C557 RC008758 BCSS116896Z TANTALUM CHIP 6 8UF 10V M A C 241 C558 RC005205 BCML811035Z CERAMIC 0 01UF 50V K B C559 RC005217 BCMM813314Z CERAMIC 330PF 50V J CH C560 RC004185 BCSS951006Z TANTALUM CHIP 10UF 7V M A C 241 C561 RC005218 BC...

Page 53: ...0 022UF 50V K B C613 RC002229 BCXT511045Z CERAMIC 0 1UF 25V K B C614 RC002229 BCXT511045Z CERAMIC 0 1UF 25V K B C615 RC004185 BCSS951006Z TANTALUM CHIP 10UF 7V M A C 241 C616 RC004185 BCSS951006Z TANTALUM CHIP 10UF 7V M A C 241 C617 RC002229 BCXT511045Z CERAMIC 0 1UF 25V K B C618 RC008731 BCXK311050Z CERAMIC 1UF 16V Z F C619 RC004448 BCSS956896Z TANTALUM CHIP 6 8UF 7V M A C 241 C620 RC005205 BCML8...

Page 54: ...74001 DIODE 1SS226 TE85L D202 RC008759 BDAY0908001 DIODE 1SV270 TPH3 D203 RC008759 BDAY0908001 DIODE 1SV270 TPH3 D401 RC002241 BDAY0597001 LED VR1102W TR D402 RC005060 BDAY0598001 LED PG1102W TR D403 RC005060 BDAY0598001 LED PG1102W TR D404 RC005060 BDAY0598001 LED PG1102W TR D406 RC008729 BDAY0824001 LED BRPG1202W TR D501 RC001635 BDAY0274001 DIODE 1SS226 TE85L D502 RC008759 BDAY0908001 DIODE 1SV...

Page 55: ...UC2199 MB89174APF G 213 BND IC604 RC004906 BDEY2936003 RH5VL33CA T1 IC605 RC005074 BDEY2937003 RH5VL28CA T1 JACKS J1 RC004854 BJKY0599009 JK 599 IMSA 9110S 09 9P J2 RC001094 BJKY0234001 JK 234 DJ13 1 J3 RC005475 BJKY0944019 JK 944 9604S 19C 19P J6 RC003586 BJKY0803002 TEL JK 803 A36 006 4910A 2P J201 RC004886 BPGY0147003 PLUG PG 147 9218B 1 03A T 3P J202 RC004875 BJKY0736009 JK 736 9210B 1 09Z386 ...

Page 56: ...UCTOR LZ 108 0 01UH K TAPE L509 RC005235 BLZY0127566 INDUCTOR LZ 127 0 0056UH TAPE L511 RC005232 BLZY0080159 INDUCTOR LZ 080 1 5UH K TAPE L512 RC004876 BLFY0274001 COIL LF 274 615LN 0124 P3 L515 RC005234 BLZY0127157 INDUCTOR LZ 127 0 015UH J TAPE T1 RC003234 BTFY0265001 TRANSFORMER TF 265 IT 24E 1B R295403 TRANSISTORS Q1 RC001637 BDBC2712303 DB 381 2SC2712 GR TE85L Q2 RC001637 BDBC2712303 DB 381 2...

Page 57: ...BRFC014734Z CARBON 47K 1 10W J TAPING R23 RC002915 BRFC011514Z CARBON 150 1 10W J TAPING R24 RC002322 BRFC014734Z CARBON 47K 1 10W J TAPING R25 RC002307 BRFC012234Z CARBON 22K 1 10W J TAPING R26 RC002501 BRFC018234Z CARBON 82K 1 10W J TAPING R27 RC002298 BRFC011044Z CARBON 100K 1 10W J TAPING R28 RC002303 BRFC011544Z CARBON 150K 1 10W J TAPING R29 RC002321 BRFC014724Z CARBON 4 7K 1 10W J TAPING R3...

Page 58: ...7K 1 10W J TAPING R73 RC002321 BRFC014724Z CARBON 4 7K 1 10W J TAPING R74 RC002321 BRFC014724Z CARBON 4 7K 1 10W J TAPING R75 RC002321 BRFC014724Z CARBON 4 7K 1 10W J TAPING R76 RC005117 BRSJ221804Z METAL OXIDE BULK 18 1 2WS J R77 RC002321 BRFC014724Z CARBON 4 7K 1 10W J TAPING R78 RC002611 BRFC013324Z CARBON 3 3K 1 10W J TAPING R79 RC002297 BRFC011034Z CARBON 10K 1 10W J TAPING R80 RC002298 BRFC0...

Page 59: ...1K 1 10W J TAPING R125 RC002296 BRFC011024Z CARBON 1K 1 10W J TAPING R126 RC002296 BRFC011024Z CARBON 1K 1 10W J TAPING R127 RC002296 BRFC011024Z CARBON 1K 1 10W J TAPING R128 RC002296 BRFC011024Z CARBON 1K 1 10W J TAPING R129 RC002898 BRFC010004Z CARBON 0 1 10W J TAPING R130 RC002295 BRFC011014Z CARBON 100 1 10W J TAPING R131 RC005659 BRSJ224794Z METAL OXIDE BULK 4 7 1 2W S J R132 RC002296 BRFC01...

Page 60: ...10W J TAPING R196 RC002322 BRFC014734Z CARBON 47K 1 10W J TAPING R197 RC002322 BRFC014734Z CARBON 47K 1 10W J TAPING R202 RC005257 BRFC164734Z CARBON 47K 1 16W J TAPING R203 RC008765 BRFC161004Z CARBON 10 1 16W J TAPING R204 RC005247 BRFC162214Z CARBON 220 1 16W J TAPING R205 RC005241 BRFC161034Z CARBON 10K 1 16W J TAPING R206 RC005252 BRFC163314Z CARBON 330 1 16W J TAPING R207 RC005253 BRFC163324...

Page 61: ... 16W J TAPING R262 RC008732 BRFC161214Z CARBON 120 1 16W J TAPING R263 RC005255 BRFC164714Z CARBON 470 1 16W J TAPING R401 RC002320 BRFC014714Z CARBON 470 1 10W J TAPING R402 RC002301 BRFC011524Z CARBON 1 5K 1 10W J TAPING R502 RC005257 BRFC164734Z CARBON 47K 1 16W J TAPING R503 RC008776 BRFC166894Z CARBON 6 8 1 16W J TAPING R504 RC005247 BRFC162214Z CARBON 220 1 16W J TAPING R505 RC005241 BRFC161...

Page 62: ...W J TAPING R558 RC005256 BRFC164724Z CARBON 4 7K 1 16W J TAPING R559 RC005255 BRFC164714Z CARBON 470 1 16W J TAPING R561 RC005256 BRFC164724Z CARBON 4 7K 1 16W J TAPING R562 RC005279 BRFC161514Z CARBON 150 1 16W J TAPING R563 RC005255 BRFC164714Z CARBON 470 1 16W J TAPING R601 RC005256 BRFC164724Z CARBON 4 7K 1 16W J TAPING R602 RC005256 BRFC164724Z CARBON 4 7K 1 16W J TAPING R603 RC005256 BRFC164...

Page 63: ...288 BRFC168244Z CARBON 820K 1 16W J TAPING R649 RC005285 BRFC165634Z CARBON 56K 1 16W J TAPING R650 RC005281 BRFC162224Z CARBON 2 2K 1 16W J TAPING R651 RC005241 BRFC161034Z CARBON 10K 1 16W J TAPING R652 RC005240 BRFC161024Z CARBON 1K 1 16W J TAPING R653 RC005240 BRFC161024Z CARBON 1K 1 16W J TAPING R654 RC005285 BRFC165634Z CARBON 56K 1 16W J TAPING R655 RC005285 BRFC165634Z CARBON 56K 1 16W J T...

Page 64: ...Y0169001 PLUG PG 169 IMSA 9215H T RL1 RC002347 BRLY0052001 RELAY RL 052 OMR 105H SP701 RC001282 BSPY0166001 SPEAKER SP 166 C060A20G0060 SP801 RC004272 BSPY0348001 SPEAKER SP 348 KR 286HA W351 RC005674 CUPB007022Z WIRE W 004 UL 1571 26 5 70 5 RED W352 RC005675 CUPK007022Z WIRE W 004 UL 1571 26 5 70 5 BLK W501 RC005699 CZDZ072147Z WIRES ASSEMBLED W 072147 WA701 RC005697 CZDZ071954Z WIRES ASSEMBLED W...

Page 65: ...29 WCTZ458209Z SHIPPING CARTON BOX RC005080 WSLV453148Z SLEEVE RC008723 WSLV456258Z SLEEVE RC008719 VNYH1103000 VINYL BAG 100X300X0 05T HIPE RC005067 VNYH1255000 VINYL BAG 250X500X0 05T HIPE RC008720 VNYL2304070 VINYL BAG 300X400X700X0 07T RC002946 VNYL3070800 VINYL BAG 70X80X0 1T RC000936 RNUT440314Z WALL MOUNT SCREW D3 5X35 ...

Page 66: ... parts necessary for repair or contact the Toshiba Factory Service Center LOC NO PART NO REF NO DESCRIPTION RC008873 AC400BLBA BASE MAIN ASSEMBLY RC008746 AC400BLBB BASE RF ASSEMBLY RC008874 AC400BLBC BASE KEY ASSEMBLY RC008875 AC400BLPA HANDSET MAIN ASSEMBLY RC008876 AC400BLPB HANDSET RF ASSEMBLY ...

Page 67: ...8MHz 19 902 984676MHz 926 893873MHz 20 903 034911MHz 926 944109MHz 21 903 085147MHz 926 994344MHz 22 903 135382MHz 927 044580MHz 23 903 185618MHz 927 094815MHz 24 903 235853MHz 927 145051MHz 25 903 286089MHz 927 195286MHz 26 903 336325MHz 927 245521MHz 27 903 386560MHz 927 295757MHz 28 903 436796MHz 927 345992MHz 29 903 487031MHz 927 396228MHz 30 903 537267MHz 927 446463MHz 31 903 587503MHz 927 49...

Page 68: ...com Ringer Level at 30cm from Speaker Frequency 1 0 kHz Called from Handset dBSPL 75 70 Call to Handset dBSPL 59 HI LEVEL 16dB 3dB Transmitter RF Power 50 W Load dBm 6 5 9 5 3 5 Modulation Sensitivity dBm 22 26 18 Frequency Response 0 3 kHz dB 0 5 4 5 3 5 3 0 kHz dB 1 5 3 Frequency Tolerance 25 C Hz 0 1500 Code Deviation kHz 8 11 Distortion 1 5 5 S N Ratio CCITT Filter ON Compander ON dB 40 35 Tel...

Page 69: ...0 Intercom Microphone Sensitivity 1 kHz 8 kHz Dev mV 2 6 1 6 4 2 Receiver Response Audio Out 1 kHz 4 kHz Dev mV 550 340 880 Handset Unit Receiver Unit Nominal Limit Sensitivity 12 dB SINAD CCITT Filter ON dBm 115 107 Frequency Response 0 3 kHz dB 1 3 5 3 0 kHz dB 7 11 3 Audio Output Level mV 60 42 85 Distortion at 1 mV RF Input 1 5 5 S N ratio at 1 mV RF Input CCITT Filter ON Compander ON dB 70 60...

Page 70: ...mA 185 165 205 c Talk mA 150 170 Charge Current with full charged battery Handset Battery mA 50 35 65 2nd Battery mA 30 15 45 Handset Unit a Stand by mA 3 5 4 b Talk mA 85 100 Battery Low Detect Voltage V 3 3 3 0 3 6 Battery Ni Cd Battery 600 mAH 1 2 V x 3 3 6 V Memory Handset 10 Memories 16 Digits 1 Redial Memory 32 Digits Base 10 Memories 16 Digits 1 Redial Memory 32 Digits Operating Temperature...

Page 71: ...MECHANICAL PARTS LIST ...

Search results

Summary of Contents for FT-8508

Reviews:

Related manuals for FT-8508

Brands by name

Popular brands

Toshiba FT-8508, Service Manual

Search results

Summary of Contents for FT-8508

Reviews:

Related manuals for FT-8508

Brands by name

Popular brands