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CORDLESS TELEPHONE

PUBLISHED IN JAPAN, June., 2000

SERVICE MANUAL

FILE NO. 2B0-200001

FT-7800

Содержание FT-7800

Страница 1: ...CORDLESS TELEPHONE PUBLISHED IN JAPAN June 2000 SERVICE MANUAL FILE NO 2B0 200001 FT 7800 ...

Страница 2: ... 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 have...

Страница 3: ...3 4 5 6 7 8 9 0 abc def jkl gfi mno tuv pqrs wxyz oper TEL LINE Jack DC In 9V Jack T P TONE PULSE Switch VOL RING button Charging Contacts CH button MEM button TALK BATT LOW LED Speaker TALK button TONE button REDIAL button PAUSE button Rechargeable Battery Pack back FLASH button Dialpad Hook Antenna IN USE CHARGE LED PAGE button One touch dialing button MEM1 MEM3 Charging Contacts ...

Страница 4: ...rks Connect the Power Meter to the RF test point on the Base MAIN PCB Adjust RT301 for a 7 5dBm reading on the Power Meter Connect the Frequency Counter to the RF test point on the Base MAIN PCB Adjust CT1 to make sure that the frequency is 926 897468 MHz Press the PAGE 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 kH...

Страница 5: ...ignal Generator to the RF test point on the Base MAIN PCB Make sure that the frequency is 902 952467 MHz Connect the DC Voltmeter to the AF test point Adjust L3 to indicate DC 1 00 V Connect the AC Voltmeter across a 600 ohm dummy to the Telephone Line Jack Adjust RT2 for a 220 mV reading on the AC voltmeter Press the PAGE key to enter the TEST Mode 5 Make sure that the frequency of RF SG output i...

Страница 6: ...X Modulation Remarks Connect the RF power Meter to the RF test point on the handset MAIN PCB Adjust RT501 for a 7 5dBm reading on the Power Meter Connect the Frequency Counter to the RF test point on the handset MAIN PCB Adjust CT401 to make sure that the frequency is 903 052467 MHz Press the 2 key to enter the TEST Mode 2 Connect the AF Generator to the MIC Connector Make sure that the output is ...

Страница 7: ... sure that the frequency is 926 997467 MHz Connect the DC Voltmeter to the AF test point Adjust L402 to indicate DC 1 00 V 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 SP Terminal Adjust RT402 for a 130 mV reading on the AC Voltmeter Press the 5 key to enter the TES...

Страница 8: ...7 BLOCK DIAGRAMS Base Unit ...

Страница 9: ...8 Handset ...

Страница 10: ...9 10 SCHEMATIC DIAGRAMS Base Unit ...

Страница 11: ...11 12 Handset ...

Страница 12: ... T P switch to TONE position 2 Diconnect the AC adaptor and telephone line code from the base 3 While pressing the PAGE key plug the AC adaptor Keep pressing the PAGE key for about 3 seconds 4 Keep pressing the PAGE key then the IN USE LED will light and the base unit will be reset HANDSET Delection of the Caller ID memory To delete the Caller ID memory in the EEPROM proceed with the folloing proc...

Страница 13: ...of the base is pressed does pin20 of IC5 change from high to low Check IC5 and its peripheral circuit When the key of the handset is pressed can the pulse output at pin 38 of IC404 be seen Check RINGER Y401 Check R55 R77 and S1 See 3 The base and handset cannot be connected Check IC404 OK OK OK NG OK NG NG NG At the Q408 collector can the pulse wave be seen OK Check R454 R457 and D402 NG ...

Страница 14: ...67 MHz 250 Hz 8 kHz Dev 1mV output signal from RF jack is applied Can the IN USE LED be lighted OK NG Check whether there is a 250 Hz data waveform at pin 9 of IC3 Check base RF unit and the peripheral circuit of IC3 NG OK Check whether there is a 250 Hz data waveform at the Q2 collector Check RT2 Q2 and their peripheral circuit NG OK Check whether there is a 250 Hz data waveform at pin 38 of IC5 ...

Страница 15: ...ck whether the bell ring NG Check whether the 250 Hz data waveform from pin 9 of IC401 Check handset RF unit and the peripheral circuit of IC401 NG OK Check whether there is a 250 Hz data waveform at the Q402 collector Check RT402 Q402 and their peripheral circuit NG OK Check whether there is a 250 Hz data waveform at pin 40 of IC404 Check R428 R429 IC403 and their peripheral circuit NG OK Check I...

Страница 16: ...ck Q10 RL1 and their peripheral circuits NG OK OK 5 Cannot make a phone call tone Can the base and handset be connected See 3 The base and handset be cannot be connected OK NG While in TALK MODE press dial key of the handset Can tone waveform from Pin 1 of IC5 is fed Check IC5 OK NG Can tone signal be heard from the handset speaker Check IC1 Q3 and their peripheral circuits NG OK Check the base TE...

Страница 17: ... output signal from the handset is detected by the liner detector can the 1 kHz sine waveform be fed Check handset RF unit NG OK Check whether there is the 1 kHz sine waveform at pin 9 of IC3 on the base unit Check base RF unit and the peripheral circuit of IC3 NG OK Check whether there is the 1 kHz sine waveform at pin 3 of IC1 Check RT2 Q2 and their peripheral circuits NG OK Check whether there ...

Страница 18: ...TX output signal from the base is detected by the liner detector can the 1 kHz sine waveform be fed Check base RF unit NG OK Check whether there is the 1 kHz sine waveform at pin 9 of IC401 on the handset unit Check handset RF unit and the peripheral circuit of IC401 NG OK Check whether there is the 1 kHz sine waveform at pin 3 of IC403 Check RT402 Q402 and their peripheral circuits NG OK Check wh...

Страница 19: ... 0 OPEN 15 0 0 0 0 GND 16 3 3 3 2 1 0 0 0 0 IC4 2 0 0 0 0 3 0 0 0 0 GND 4 3 2 3 1 Ref No PIN STBY TALK NOTE 1 0 0 0 0 2 3 2 3 1 3 0 0 0 0 GND 4 0 0 0 0 GND 5 1 2 AC 1 2 AC 6 1 8 AC 1 8 AC 7 3 3 3 1 8 0 0 0 0 GND 9 0 0 0 0 OPEN 10 0 0 0 0 OPEN 11 0 0 0 0 OPEN 12 0 0 0 0 OPEN 13 0 0 2 8 14 0 0 0 0 OPEN 15 0 0 0 0 OPEN 16 0 0 0 0 OPEN 17 0 0 0 0 OPEN 18 3 4 3 4 19 0 0 0 0 GND 20 3 4 3 1 21 3 4 3 1 IC...

Страница 20: ... B 0 7 0 7 E 0 2 0 1 Q2 C 2 0 2 0 B 0 8 0 8 E 1 1 1 1 Q3 C 4 8 4 8 B 1 7 1 7 E 0 5 0 5 Q4 C 1 6 1 6 B 1 1 1 1 E 0 0 0 0 GND Q6 C 3 3 3 1 B 0 0 0 0 E 6 1 6 1 Q7 C 9 0 9 0 B 6 8 6 8 E 0 0 0 0 Q8 C 0 0 0 0 B 0 7 0 7 E 0 0 0 0 GND Q9 C 3 2 3 1 B 0 0 0 0 E 0 0 0 0 GND Q10 C 6 2 0 0 B 0 0 0 7 E 3 3 3 2 Q11 C 6 1 6 1 B 4 0 3 8 E 3 3 3 2 Q12 C 0 0 3 1 B 2 7 2 4 ...

Страница 21: ...1 0 0 3 0 6 22 0 0 1 5 23 0 0 1 5 24 0 0 1 5 1 0 0 0 0 OPEN IC404 2 3 5 3 4 3 0 0 0 0 GND 4 0 0 0 0 GND Ref No PIN STBY TALK NOTE 5 0 0 2 0 AC 6 0 3 5 2 0 AC 7 3 5 3 4 VCC 8 0 0 0 0 GND 9 0 0 0 0 OPEN 10 0 0 0 0 OPEN 11 0 0 3 4 12 0 0 3 4 13 0 0 3 4 14 0 0 3 4 15 0 0 0 0 16 3 5 0 0 3 17 0 0 0 0 OPEN 18 0 0 0 0 OPEN 19 0 0 0 0 GND 20 0 0 0 0 OPEN 21 0 0 0 0 22 0 0 0 0 23 0 0 0 0 24 0 0 0 0 25 0 0 0...

Страница 22: ...2 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 Q411 C 3 5 3 4 B 0 0 0 0 Ref No PIN STBY TALK NOTE E 0 0 3 3 Q41...

Страница 23: ...11 33 P02 L12 32 P03 L13 31 P04 L14 30 P05 L15 29 P06 L16 28 P07 L17 27 P10 26 P11 25 1 DTMF 2 RST 3 MDD0 4 MDD1 5 X0 6 X1 7 Vcc 8 P50 X0A 9 P51 Z1A 10 P27 11 P26 12 P25 IC5 MB89173PF IC1 LA8633VU 1 2 3 IC6 PH5VL28CA IC3 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 VCC 13 1 LPF1 IN 2 LPF1 OUT 3 EXP IN...

Страница 24: ...12 32 P03 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...

Страница 25: ...26 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...

Страница 26: ...27 Handset Main PCB ...

Страница 27: ...28 WIRING DIAGRAMS Base Unit ...

Страница 28: ...29 Handset ...

Страница 29: ...30 EXPLODED VIEWS AND MECHANICAL PARTS LIST Base Unit 3 10 6 1 8 12 9 4 13 4 10 10 RF MODULE BASE 2 ANTENNA 11 7 11 5 ...

Страница 30: ...C002384 LFUT428079Z FOOT BUMPON SJ 5916 1 6T 2 6 RC009205 GCAS456869A HOOK ABS 1 7 RC009208 PLBS447453Z LABEL ID POLYESTER 1 8 RC009204 GCAS442792A LED LENS PMMA 1 9 RC008289 SSCW192005N SCREW BIND HD M2X5 NI 4 10 RC000941 SSCW802608N SCREW P TIGHT BIND HD D2 6X8 NI 5 11 RC004893 SSCW802612N SCREW P TIGHT BIND HD D2 6X12 NI 4 12 RC001752 SSCW283012N SCREW TAPPING BIND SP WASHER D3X12 NI 1 13 RC009...

Страница 31: ...32 Handset 15 7 4 9 18 1 12 19 18 19 18 RF MODULE HANDSET 5 11 17 13 2 8 6 16 14 10 3 ...

Страница 32: ...86 RCUN451209Z CUSHION NEOPRENE 1 9 RC008347 RCUM441150Z CUSHION MOLTPRENE 40 20 8 1 10 RC009214 GCAS447433Z DISPLAY WINDOW PMMA 1 11 RC004911 LHDZ453970A HOLDER MIC EPDM 1 12 RC009216 GHDZ359361Z HOLDER SPEAKER ABS 1 13 RC009219 LNBZ342477Z KEY RUBBER SI 1 14 RC004285 PLBZ451727Z LABEL CAUTION PAPER 1 15 RC009221 PLBZ447493Z LABEL CAUTION POLYESTER 1 16 RC009220 PLBS447454Z LABEL ID 1 17 RC008289...

Страница 33: ...C001797 BCAZ114706Z ELECTROLYTIC 47UF 10V M C 156 C11 RC005205 BCML811035Z CERAMIC M L 1608 TAPE 0 01UF 50V K B C12 RC008268 BCML314735Z CERAMIC M L 1608 TAPE 0 047UF 16V K B C13 RC004138 BCAZ811006Z ELECTROLYTIC 10UF 50V M C 156 C14 RC005202 BCML311045Z CERAMIC M L 1608 TAPE 0 1UF 16V K B C17 RC008318 BCML815625Z CERAMIC M L 1608 TAPE 0 0056UF 50V K B C18 RC008269 BCML316835Z CERAMIC M L 1608 TAP...

Страница 34: ...L 2125 TAPE 1UF 16V Z F C61 RC005202 BCML311045Z CERAMIC M L 1608 TAPE 0 1UF 16V K B C62 RC005209 BCMM811002Z CERAMIC M L 1608 TAPE 10PF 50V D CH C63 RC005205 BCML811035Z CERAMIC M L 1608 TAPE 0 01UF 50V K B C64 RC005205 BCML811035Z CERAMIC M L 1608 TAPE 0 01UF 50V K B C65 RC005212 BCMM811504Z CERAMIC M L 1608 TAPE 15PF 50V J CH C66 RC005210 BCMM811014Z CERAMIC M L 1608 TAPE 100PF 50V J CH C67 RC0...

Страница 35: ...TAPE 100PF 50V J CH C430 RC005210 BCMM811014Z CERAMIC M L 1608 TAPE 100PF 50V J CH C431 RC008268 BCML314735Z CERAMIC M L 1608 TAPE 0 047UF 16V K B C432 RC008319 BCSH904796Z TANTALUM CHIP TAPE 4 7UF 6 3V M C 122 C433 RC008268 BCML314735Z CERAMIC M L 1608 TAPE 0 047UF 16V K B C434 RC005205 BCML811035Z CERAMIC M L 1608 TAPE 0 01UF 50V K B C435 RC005202 BCML311045Z CERAMIC M L 1608 TAPE 0 1UF 16V K B ...

Страница 36: ...ML311045Z CERAMIC M L 1608 TAPE 0 1UF 16V K B C474 RC008296 BCSH901006Z TANTALUM CHIP TAPE 10UF 6 3V M C 122 C488 RC008731 BCXK311050Z CERAMIC M L 2125 TAPE 1UF 16V Z F C490 RC002223 BCXK811030Z CERAMIC M L 2125 TAPE 0 01UF 50V Z F CT1 RC008272 BCTY0076100 TRIMMER CT 076 TZ3Z100FR 10PF CT401 RC008272 BCTY0076100 TRIMMER CT 076 TZ3Z100FR 10PF DIODES D1 RC002236 BDAY0246003 AX TS 26 1N4148 T 77 D3 R...

Страница 37: ...5 RC008538 BLZY0087397 INDUCTOR MOLDED CHIP LZ 087 0 039UH J TAPE T1 RC003234 BTFY0265001 TRANSFORMER HYBRID TF 265 IT 24E 1B R295403 TRANSISTORS Q1 RC002245 BDBC2714124 DB 718 2SC2714 Y TE85L Q2 RC003031 BDBC1623648 DB 380 2SC1623 L6 T1B Q3 RC003031 BDBC1623648 DB 380 2SC1623 L6 T1B Q4 RC003031 BDBC1623648 DB 380 2SC1623 L6 T1B Q6 RC003031 BDBC1623648 DB 380 2SC1623 L6 T1B Q7 RC003200 BDBD0471111...

Страница 38: ...1 16W J TAPE R24 RC002349 BRSJ221034Z METAL OXIDE BULK 10K 1 2WS J R25 RC002350 BRSN101514Z METAL OXIDE FORMED 12 5 150 1W J R26 RC005249 BRFC162244Z CARBON FIXED CHIP 220K 1 16W J TAPE R27 RC005255 BRFC164714Z CARBON FIXED CHIP 470 1 16W J TAPE R29 RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1 16W J TAPE R30 RC005240 BRFC161024Z CARBON FIXED CHIP 1K 1 16W J TAPE R33 RC005249 BRFC162244Z CARBON FIX...

Страница 39: ...CHIP 47K 1 16W J TAPE R78 RC005257 BRFC164734Z CARBON FIXED CHIP 47K 1 16W J TAPE R79 RC005258 BRFC164744Z CARBON FIXED CHIP 470K 1 16W J TAPE R80 RC008734 BRFC162254Z CARBON FIXED CHIP 2 2M 1 16W J TAPE R84 RC005248 BRFC162234Z CARBON FIXED CHIP 22K 1 16W J TAPE R86 RC005242 BRFC161044Z CARBON FIXED CHIP 100K 1 16W J TAPE R87 RC008735 BRFC166824Z CARBON FIXED CHIP 6 8K 1 16W J TAPE R88 RC005257 B...

Страница 40: ... CHIP 6 8K 1 16W J TAPE R434 RC005258 BRFC164744Z CARBON FIXED CHIP 470K 1 16W J TAPE R435 RC005241 BRFC161034Z CARBON FIXED CHIP 10K 1 16W J TAPE R436 RC005280 BRFC161534Z CARBON FIXED CHIP 15K 1 16W J TAPE R437 RC005254 BRFC164704Z CARBON FIXED CHIP 47 1 16W J TAPE R438 RC005281 BRFC162224Z CARBON FIXED CHIP 2 2K 1 16W J TAPE R439 RC005280 BRFC161534Z CARBON FIXED CHIP 15K 1 16W J TAPE R440 RC00...

Страница 41: ...R480 RC005242 BRFC161044Z CARBON FIXED CHIP 100K 1 16W J TAPE R481 RC005280 BRFC161534Z CARBON FIXED CHIP 15K 1 16W J TAPE R482 RC005280 BRFC161534Z CARBON FIXED CHIP 15K 1 16W J TAPE R483 RC005281 BRFC162224Z CARBON FIXED CHIP 2 2K 1 16W J TAPE R484 RC005311 BRFC160004Z CARBON FIXED CHIP 0 1 16W J TAPE R485 RC005311 BRFC160004Z CARBON FIXED CHIP 0 1 16W J TAPE R486 RC005311 BRFC160004Z CARBON FIX...

Страница 42: ...9 CZDZ072199Z WIRES ASSEMBLED W 072199 W801 RC009223 CUPB005511Z WIRE W 004 UL 1571 26 3 55 3 RED W802 RC009224 CUQK005511Z WIRE W 005 UL 1571 26 3 55 3 BLK WZ901 RC008231 BWZY1401001 TEL CORD WZ 1401 UNL 020 2GY 214 Y401 RC008787 BYYY1392001 BUZZER YY 1392 ST 1285 APH PACKING PARTS RC009225 WBAG455865Z AIR CAP RC005198 UDZZ73535ZZ CAUTION BELT RC004291 WETC420086Z COVER ANT EPE RC009159 WBXZ34739...

Страница 43: ...z 19 902 952467MHz 926 897468MHz 20 903 002467MHz 926 947468MHz 21 903 052467MHz 926 997467MHz 22 903 102467MHz 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 502468MHz 927 447466MHz 31 903 552468MHz 927 49746...

Страница 44: ... On hook Impedance 20Hz 75Vrms 4 Minimum Ringer Input Level 5 Pulse Dialing a Dialing Rate 10pps b Make Ratio 10pps 6 DTMF Output 600Ω Load a Minimum Level of Single Tone Low Group High Group 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 UNIT dBm dB dB dB kHz kHz dB dB dBm UNIT dBm dBm dB dB kHz kHz dB dB dB UNIT OHM OHM kOHM ...

Страница 45: ...ION 1 Base Unit a Stand by Charge Off b Stand by Charge On c Talk 2 Charge Current at BATTERY 3 Portable Unit a Stand by b Super Sleep c Talk 4 Battery Low Detect Voltage UNIT dBm dB dB mV mV mV dB kHz kHz dB dB DBSPL UNIT dBm mV dB dB kHz kHz dB dB dB UNIT mA mA mA mA mA mA mA V NOMINAL 115 0 5 0 280 130 50 1 5 70 15 15 30 45 90 NOMINAL 7 5 8 2 5 1 0 0 8 0 1 5 55 55 35 NOMINAL 75 140 110 45 3 2 1...

Страница 46: ......

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