Toshiba FT-8509 Service Manual Download Page 16 | Manualshive

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16

TROUBLESHOOTING HINTS

1. The bell does not ring.

When the INTCOM key of
the base is pressed, does
the ringer on the handset
ring?

When the TEL SG is joined
with the base to make bell
signal, is there pulse wave
at pin 4 of IC5?

Is there pulse wave at pin
37 of IC10?

Check IC10 and its
peripheral circuit.

See 2. The bell does not
ring & page does not ring.

OK

NG

Check IC5 and TEL network
circuit.

NG

Check R50, R113 and C47.

NG

OK

OK

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Summary of Contents for FT-8509

Page 1: ...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 ...

Page 2: ... 121 5 30 36 6 59 0 18 25 66 7 3 21 70 83 38 6 1 3 1 XJ1 4 ...

Page 3: ...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 4: ...ontact MUTE Button CH Button VOL RING Button Dialpad FLASH Button REDIAL Button Antenna TEL Line Jac DC 9V IN Jack TONE Button RDL Redial Button HOLD Button IN USE LED CHARGE LED POWER LED TONE PULSE Switch Line Ringer Volume Switch Speaker Antenna MEM Memory Button Speed Dial Index 1 to 10 PAUSE Button MUTE Button INTCOM LED Green Speaker Volume Control INTCOM Button FLASH Button SPEAKER Button M...

Page 5: ...EMARKS 1 VO TX FRQ ADJ 1 19 L L L L 2 TX MODE CHECK 2 19 L H L H 3 TX DATA 3 19 L L L L 1 4 RX SENS 4 19 H L H H 5 SQ SENS 5 19 L L H L H 2 6 RING CHECK 6 19 H L L L 7 DUAL TONE CHECK 7 19 H L L H 3 8 DATA IN CHECK 8 19 L L L H 4 9 CHANNEL DATA CHECK 9 19 H L L L 5 10 DUPLE 0 19 L H H H 11 INT COM MEM 19 L H H L 1 0000 250Hz will be fed out continuously as transmitting data 2 Bell rings when sensi...

Page 6: ...CH TX CONT SC TX MUTE RX MUTE CONV REMARKS 1 VO TX FRQ ADJ 1 21 L H L L H 2 TX MOD CHECK 2 21 L H H 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 DUPLE 0 21 L H H H L A Squelch ON is H or Squelch OFF is L 1 In the TEST mode 3 0000 ...

Page 7: ...at the frequency is 926 897468 MHz 3 RT3 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 77 6 mV from the AF Generator Connect the Deviation Meter to the RF test point on the Base MAIN PCB Adjust RT3 to indicate 8 kHz Dev Alignment Point Location on Base Main PCB and Base RF PCB RF Test Poi...

Page 8: ...ion RT2 RX AF Voltage Connect the AC Voltmeter across a 600 ohm dummy to the Telephone Line Jack Adjust RT2 for a 218 mV reading on the AC voltmeter 3 SG 7dBµV No modulation RT1 SQ Point Press the 5 key to enter the TEST Mode 5 Make sure that the frequency of RF SG output is 902 952467 MHz Adjust RT1 to turn to the point where the bell rings Alignment Point Location on Base Main PCB and Base RF PC...

Page 9: ...handset MAIN PCB Adjust CT401 to make sure that the frequency is 903 052467 MHz 3 RT403 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 1kHz 9mV from the AF Generator Connect the Deviation Meter to the RF test point on the handset MAIN PCB Adjust RT403 to indicate 8 kHz Dev Alignment Point Location on Handset Main PC...

Page 10: ...meter to the AF test point Adjust L402 to indicate DC 1 00V 2 SG 1mV 1kHz 8kHz Deviation RT402 RX AF Voltage Connect the RF Signal Generator to the RF test point on the handset MAIN PCB Make sure that the frequency is 926 997467 MHz Connect the AC Voltmeter across a 150 ohm dummy to the MIC Connector Adjust RT402 for a 128 mV reading on the AC Voltmeter 3 SG 7dBµV 1kHz 8kHz Deviation RT401 SQ Poin...

Page 11: ...9 BLOCK DIAGRAMS Base Unit ...

Page 12: ...10 Handset Unit ...

Page 13: ...6 0 7 5 06 DVH 8QLW 0DLQ 45 44 ...

Page 14: ...13 Base Unit ke NOTES 1 RESISTANCE VALUES ARE SHOWN IN OHMS UNLESS OTHERWISE NOTED K KILO OHM M MEG OHM ...

Page 15: ... DQGVHW 0DLQ 48 47 ...

Page 16: ... the handset ring When the TEL SG is joined with the base to make bell signal is there pulse wave at pin 4 of IC5 Is there pulse wave at pin 37 of IC10 Check IC10 and its peripheral circuit See 2 The bell does not ring page does not ring OK NG Check IC5 and TEL network circuit NG Check R50 R113 and C47 NG OK OK ...

Page 17: ... base is pressed does pin 14 of IC10 change from to low Check IC10 and its peripheral circuit See 3 The base and handset cannot be connected OK NG When the key of the handset is pressed can the pulse output at pin 38 of IC404 be seen NG Check Keyboard Rubber NG OK OK Check IC404 NG At the Q408 collector can the pulse wave be seen OK Check RINGER Y401 OK Check R454 R457 R456 Q408 Q409 and D402 NG ...

Page 18: ...gnal from RF jack is applied Does the bell ring Check whether there is a 250 Hz data waveform at pin 9 of IC2 OK NG Check whether the handset is able to set in the test mode 1 Check IC404 and its peripheral circuit OK NG Check the TX POWER and the TX FREQUENCY on the handset unit Check handset RF unit OK NG Check RT3 R56 C60 C59 R55 and C50 NG Check base RF unit OK Check base RF unit NG Check whet...

Page 19: ...base to charge about 5 seconds then connect again Check whether there is a 250Hz data waveform at the Q402 collector Check RT402 Q402 and their peripheral circuits NG Check IC404 and its peripheral circuit OK A Check RT403 R441 R442 R443 R444 R445 and C453 NG Check handset RF unit OK Check whether the 250 Hz data waveform from pin 9 of IC401 is fed Check handset RF unit and the peripheral circuit ...

Page 20: ...eform on Pin 1 of IC10 Check whether there is a DTMF waveform on Pin1 of IC1 Check the collector of Q6 Check RL1 Check IC10 Q15 and their peripheral circuits OK NG Check IC1 NG Check Q6 R49 and R64 NG OK OK Check whether there is a pulse on Pin 10 of IC10 Check IC10 NG ...

Page 21: ... the Handset cannot be heard on the Base unit Check whether there is an audio waveform on Pin 4 of IC7 Check Pin 7 of IC6 Check whether there is an audio waveform on Pin 15 of IC7 Check WF701 and SP701 Check MC251 and IC7 OK NG Check IC7 NG OK OK Check whether there is an audio waveform on Pin 1 of IC6 Check IC6 NG ...

Page 22: ...here is an audio waveform on Pin 1 of IC6 Check IC1 OK NG Check IC6 RL1 and Q6 NG Check whether there is an audio waveform on Pin 15 of IC7 OK Check IC7 NG OK Check WF701 and SP701 Check whether there is an audio waveform on Pin 4 of IC7 Check whether there is an audio waveform on Pin 1 of IC1 Check MC251 and IC7 OK NG Check IC1 NG Check whether there is an audio waveform on collector of Q3 OK Che...

Page 23: ...5 2 5 2 Vcc 9 1 5 3 0 2 0 2 4 1 2 2 2 2 10 0 7 0 7 2 2 2 2 2 11 0 3 2 0 0 5 0 8 3 1 6 1 6 12 0 8 0 8 4 2 4 2 4 13 5 2 0 0 SQ 5 2 9 2 9 14 0 0 0 0 OPEN 6 2 8 2 8 15 0 0 0 0 GND 7 2 9 2 9 IC2 16 5 2 5 2 8 2 8 2 8 1 2 8 2 8 9 2 9 2 9 2 2 8 2 8 10 2 8 2 8 3 2 5 3 0 2 8 11 2 4 2 4 4 0 8 0 7 12 2 8 2 8 5 2 8 2 8 OPEN 13 2 9 2 9 6 2 8 2 8 14 0 0 0 0 GND 7 2 6 2 6 15 3 4 3 4 8 5 2 5 2 OPEN 16 7 8 7 8 9 0 ...

Page 24: ...E E 0 2 0 2 7 5 2 5 2 C 4 5 4 5 8 0 0 0 0 GND Q1 B 1 0 1 0 9 0 0 0 0 GND E 0 2 0 2 10 0 0 5 2 C 2 8 2 8 11 0 0 5 2 5 2 Q2 B 0 8 0 8 12 0 0 5 2 5 2 E 0 0 0 0 13 0 0 5 2 0 0 C 2 8 2 8 14 5 2 0 0 Q3 B 5 2 1 5 15 0 0 0 0 OPEN E 0 7 0 9 16 5 2 5 2 C 3 8 3 4 17 5 2 5 2 Q4 B 1 4 1 6 18 5 2 0 0 SQ E 0 0 0 0 19 0 0 0 0 GND C 2 0 2 0 20 0 0 5 2 0 0 5 2 Q5 B 5 2 1 5 21 5 2 5 2 E 0 0 0 0 GND 22 5 2 0 0 C 9 0 ...

Page 25: ...nit V Ref No PIN STBY TALK NOTE E 0 7 0 7 C 0 0 0 0 Q12 B 0 0 0 0 E 0 0 0 0 GND C 5 2 5 2 Q13 B 0 0 0 0 E 5 2 5 2 C 0 0 0 0 Q14 B 2 2 2 2 E 2 5 2 5 C 5 0 5 0 Q15 B 3 2 3 2 E 2 5 2 5 C 2 5 2 5 Q16 B 5 2 5 2 ...

Page 26: ... 9 21 0 0 0 0 2 0 2 0 1 9 22 0 0 0 0 3 0 1 5 1 5 23 0 0 0 0 4 0 0 4 0 6 24 0 0 0 0 5 0 0 4 1 5 25 0 0 0 0 6 0 0 4 1 5 26 1 0 3 0 3 4 7 0 1 8 1 8 27 1 0 3 0 3 4 8 0 0 3 4 28 0 0 OPEN 9 0 0 0 0 GND 29 3 8 3 8 10 0 3 0 1 6 30 3 5 3 4 11 0 0 0 0 GND 31 3 5 3 4 12 0 1 0 1 5 32 3 5 3 4 13 0 3 0 3 0 33 3 5 3 4 14 0 0 1 5 34 3 5 3 4 15 0 0 1 5 OPEN 35 3 8 3 8 16 0 0 3 4 36 3 8 3 8 17 0 0 3 4 37 0 0 3 3 18...

Page 27: ... 3 8 3 8 E 0 0 0 0 GND Q401 C 0 2 0 1 7 B 0 0 8 0 7 E 0 0 0 0 Q402 C 0 2 0 1 9 B 0 0 8 0 7 E 0 3 0 3 0 Q403 C 0 0 2 9 B 0 2 4 2 2 E 0 0 0 4 Q404 C 0 0 1 9 B 0 0 1 0 E 0 0 0 5 Q405 C 3 8 2 6 B 0 0 1 2 E 0 0 0 5 Q406 C 3 8 2 5 B 0 0 1 2 E 0 0 0 0 GND Q407 C 0 0 0 0 B 0 0 0 0 E 0 0 0 0 Q408 C 3 8 3 8 B 0 0 0 0 E 0 0 0 0 GND Q409 C 0 0 0 0 B 0 0 0 0 E 0 0 0 0 GND Q410 C 3 8 3 8 B 0 0 0 0 E 0 0 0 0 GND...

Page 28: ...P25 IC10 MB89174LPF IC1 IC6 M5223L IC3 LA8633VU 1 2 3 IC9 PH5VL40CA IC2 MC3361CDR2 IC7 MC34018P PRE IN 24 PRE NF 23 CMP NF 22 CMP VREC 21 CMP OUT 20 LPF2 IN 19 LPF2 OUT 18 CMP MUTE CONT 17 EXP MUTE CONT 16 TX DATA IN 15 VREF 14 VCC 13 1 LPF1 IN 2 LPF1 OUT 3 EXP IN 4 EXT VREC 5 INT OUT 6 TEL OUT 7 V HOLD 8 INTC CONT 9 CHARGE CONT 10 FSK OUT 11 GND 12 ST BY RRX 28 RXI 27 RXO 26 ACF 25 VLC 24 XDC 23 ...

Page 29: ...3 L13 31 P04 L14 30 P05 L15 29 P06 L16 28 P07 L17 27 P10 26 P11 25 1 NC 2 RST 3 MDD0 4 MDD1 5 X0 6 X1 7 Vcc 8 NC 9 NC 10 P27 11 P26 12 P25 IC404 MB89174LPF IC405 TK11130SCL V DET 2 5 V IN 2 4 1 V DET 1 2 V IN 1 3 V SS IC406 XC612N3328MR IC403 LA8633VU IC401 MC3361CDR2 PRE IN 24 PRE NF 23 CMP NF 22 CMP VREC 21 CMP OUT 20 LPF2 IN 19 LPF2 OUT 18 CMP MUTE CONT 17 EXP MUTE CONT 16 TX DATA IN 15 VREF 14...

Page 30: ...30 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...

Page 31: ...31 Base Unit Key PCB ...

Page 32: ...32 Handset Main PCB ...

Page 33: ...33 WIRING DIAGRAMS Base Unit ...

Page 34: ...34 Handset ...

Page 35: ...35 EXPLODED VIEWS AND MECHANICAL PARTS LIST Base Unit SPEAKER KEY PCB RF MODULE BASE MAIN PCB ANTENNA ...

Page 36: ...57883Z KEY RUBBER SI 1 11 RC005124 GNBZ455306Z KNOB SLIDE ABS 1 12 RC008415 PLBB442827Z LABEL BARCODE PAPER 1 13 RC008416 PLBZ442826Z LABEL INDICATION 1 14 RC005329 PLBZ456718Z LABEL INDICATION 1 15 RC005682 GCAS357878Z LED LENS PMMA 1 16 RC008818 GCAS458189Z LED LENS PMMA 1 17 RC005688 KDPZ457908Z PLATE DISPLA PC 1 18 RC008289 SSCW192005N SCREW BIND HD M2X5 NI 4 19 RC000941 SSCW802608N SCREW P TI...

Page 37: ...37 7 8 4 1 16 17 17 5 10 15 11 12 2 9 6 13 14 3 17 Handset RF MODULE HANDSET MAIN PCB ASSY ...

Page 38: ...RC008702 GCAS357889Z COVER BATTER ABS 1 8 RC008347 RCUM441150Z CUSHION MOLTPRENE 40 20 8 1 9 RC008348 RCUN442433Z CUSHION NEOPRENE 1 10 RC008709 LHDZ456969Z HOLDER MIC EPDM 1 11 RC008339 GHDZ342333Z HOLDER SPEAKER ABS 1 12 RC008344 LNBZ342335Z KEY RUBBER SI 1 13 RC008421 PLBS442828Z LABEL ID 1 14 RC008343 KDPZ442337Z PLATE DISPLA PMMA 1 15 RC008289 SSCW192005N SCREW BIND HD M2 5 NI 4 16 RC003327 S...

Page 39: ... M L 1608 TAPE 0 1UF 16V K B C16 RC008270 BCML811235Z CERAMIC M L 1608 TAPE 0 012UF 50V K B C17 RC005203 BCML512235Z CERAMIC M L 1608 TAPE 0 022UF 25V K B C18 RC008146 BCML816825Z CERAMIC M L 1608 TAPE 0 0068UF 50V K B C19 RC005202 BCML311045Z CERAMIC M L 1608 TAPE 0 1UF 16V K B C20 RC008008 BCMM812714Z CERAMIC M L 1608 TAPE 270PF 50V J CH C21 RC005202 BCML311045Z CERAMIC M L 1608 TAPE 0 1UF 16V K...

Page 40: ...TAPE 1UF 16V Z F C71 RC005202 BCML311045Z CERAMIC M L 1608 TAPE 0 1UF 16V K B C72 RC001810 BCAZ814796Z ELECTROLYTIC 4 7UF 50V M C 156 C73 RC001805 BCAZ811096Z ELECTROLYTIC 1UF 50V M C 156 C74 RC005274 BCML811535Z CERAMIC M L 1608 TAPE 0 015UF 50V K B C75 RC005202 BCML311045Z CERAMIC M L 1608 TAPE 0 1UF 16V K B C76 RC008731 BCXK311050Z CERAMIC M L 2125 TAPE 1UF 16V Z F C77 RC008390 BCAZ811016Z ELEC...

Page 41: ...RAMIC M L 1608 TAPE 330PF 50V J CH C408 RC005207 BCML813325Z CERAMIC M L 1608 TAPE 0 0033UF 50V K B C409 RC005202 BCML311045Z CERAMIC M L 1608 TAPE 0 1UF 16V K B C410 RC005203 BCML512235Z CERAMIC M L 1608 TAPE 0 022UF 25V K B C414 RC005202 BCML311045Z CERAMIC M L 1608 TAPE 0 1UF 16V K B C416 RC002594 BCXT516835Z CERAMIC M L 2125 TAPE 0 068UF 25V K B C417 RC004347 BCXK514740Z CERAMIC M L 2125 TAPE ...

Page 42: ...C003284 BCFZ901016Z ELECTROLYTIC 100UF 6 3V M C 258 C468 RC005205 BCML811035Z CERAMIC M L 1608 TAPE 0 01UF 50V K B C469 RC008296 BCSH901006Z TANTALUM CHIP TAPE 10UF 6 3V M C 122 C470 RC005203 BCML512235Z CERAMIC M L 1608 TAPE 0 022UF 25V K B C471 RC005205 BCML811035Z CERAMIC M L 1608 TAPE 0 01UF 50V K B C472 RC005205 BCML811035Z CERAMIC M L 1608 TAPE 0 01UF 50V K B C473 RC005202 BCML311045Z CERAMI...

Page 43: ...08397 BLZY0136100 INDUCTOR MOLDED CHIP LZ 136 MLF1608K100KT 10UH L402 RC008281 BLBY1175001 LB 1175 7002BE A0026HM L403 RC008283 BLZY0181127 INDUCTOR MOLDED CHIP TAPE LZ 181 12NH J T1 RC003234 BTFY0265001 TRANSFORMER HYBRID TF 265AT 24E7 1B R295403 TRANSISTORS Q1 RC002245 BDBC2714124 DB 718 2SC2714 Y TE85L Q2 RC001637 BDBC2712303 DB 381 2SC2712 GR TE85L Q3 RC001081 BDBA1162107 DB 036 2SA1162 G GR T...

Page 44: ... BRFC161014Z CARBON FIXED CHIP 100 1 16W J TAPING R25 RC005259 BRFC166814Z CARBON FIXED CHIP 680 1 16W J TAPING R26 RC002335 BRFC183314Z CARBON FIXED CHIP 330 1 8W J TAPING R27 RC002350 BRSN101514Z METAL OXIDE FORMED 150 1W J P 12 5 R28 RC005311 BRFC160004Z CARBON FIXED CHIP 0 1 16W J TAPING R29 RC005245 BRFC161834Z CARBON FIXED CHIP 18K 1 16W J TAPING R30 RC005241 BRFC161034Z CARBON FIXED CHIP 10...

Page 45: ...05249 BRFC162244Z CARBON FIXED CHIP 220K 1 16W J TAPING R83 RC005248 BRFC162234Z CARBON FIXED CHIP 22K 1 16W J TAPING R84 RC005281 BRFC162224Z CARBON FIXED CHIP 2 2K 1 16W J TAPING R85 RC005248 BRFC162234Z CARBON FIXED CHIP 22K 1 16W J TAPING R88 RC005257 BRFC164734Z CARBON FIXED CHIP 47K 1 16W J TAPING R89 RC005239 BRFC161014Z CARBON FIXED CHIP 100 1 16W J TAPING R90 RC005240 BRFC161024Z CARBON F...

Page 46: ...66824Z CARBON FIXED CHIP 6 8K 1 16W J TAPING R155 RC005311 BRFC160004Z CARBON FIXED CHIP 0 1 16W J TAPING R401 RC005249 BRFC162244Z CARBON FIXED CHIP 220K 1 16W J TAPING R403 RC005252 BRFC163314Z CARBON FIXED CHIP 330 1 16W J TAPING R404 RC005255 BRFC164714Z CARBON FIXED CHIP 470 1 16W J TAPING R405 RC005245 BRFC161834Z CARBON FIXED CHIP 18K 1 16W J TAPING R406 RC005281 BRFC162224Z CARBON FIXED CH...

Page 47: ...461 RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1 16W J TAPING R462 RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1 16W J TAPING R463 RC005253 BRFC163324Z CARBON FIXED CHIP 3 3K 1 16W J TAPING R464 RC005246 BRFC162204Z CARBON FIXED CHIP 22 1 16WJ TAPING R465 RC005240 BRFC161024Z CARBON FIXED CHIP 1K 1 16W J TAPING R466 RC005240 BRFC161024Z CARBON FIXED CHIP 1K 1 16W J TAPING R467 RC005284 BRFC163334Z ...

Page 48: ...71 26 7 150 7 BLK W2 RC008358 CUQB015033Z WIRE W 005 UL 1571 26 7 150 7 RED W251 RC008405 CUQB009022Z WIRE W 005 UL 1571 26 5 90 5 RED W252 RC008406 CUQK009022Z WIRE W 005 UL 1571 26 5 90 5 BLK W401 RC008329 CZDZ072199Z WIRES ASSEMBLED W 072199 W701 RC008417 CUQB008022Z WIRE W 005 UL 1571 26 5 80 5 RED W702 RC008418 CUQK008022Z WIRE W 005 UL 1571 26 5 80 5 BLK W801 RC008350 CUQJ007011Z WIRE W 005 ...

Page 49: ...49 ASSEMBLY PARTS LIST LOC NO PART NO REF NO DESCRIPTION RC008428 AC220BLBA MAIN PCB ASSEMBLY BASE RC008429 AC220BLBC KEY PCB ASSEMBLY BASE RC008430 AC220BLPA MAIN PCB ASSEMBLY HANDSE ...

Page 50: ...67MHz 926 897468MHz 20 903 002467MHz 926 947468MHz 21 903 052467MHz 926 997467MHz 22 903 102467M z 927 047467MHz 23 903 152467MHz 927 097467MHz 24 903 202468MHz 927 147467MHz 25 903 252468MHz 927 197467MHz 26 903 302468MHz 927 247467MHz 27 903 352468MHz 927 297467MHz 28 903 402468MHz 927 347466MHz 29 903 452468MHz 927 397466MHz 30 903 502468M z 927 447466MHz 31 903 552468MHz 927 497466MHz 32 903 6...

Page 51: ...up b DTMF Level c DTMF Frequency Row 1 Row 2 Row 3 Row 4 Column 1 Column 2 Column 3 d Signal Length e Interdigital Pause SPEAKER PHONE 1 Microphone Sensitivit 20dBm TEL Output set to MIC Gain is MAX and SPEAKER Gain is MIN 2 Receiver Response Audio Out Audio Output at 20dBm TEL Input 20 Pin and 25 Pin at IC7 is Shout INTERCOM 1 Microphone Sensitivit 1kHz 6 0kHz Dev set to MIC Gain is MAX and SPEAK...

Page 52: ... Stand by Charge On c Talk 2 Charge Current at BATTERY 3 Portable Unit a Stand b b Talk 4 Battery Low Detect Voltage UNIT dBm dB dB mV mV mV dB kHz kHz DBSPL DBSPL DBSPL DBSPL dBSPL dBSPL UNIT dBm mV dB dB Hz kHz dB UNIT mA mA mA mA mA mA V NOMINAL 115 2 0 4 0 229 128 51 2 0 70 15 15 80 70 70 60 82 70 NOMINAL 7 5 9 1 5 1 5 0 8 0 1 5 40 NOMINAL 110 195 150 50 2 3 70 3 3 LIMIT 107 6 0 2 0 8 0 0 0 16...

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