GTX/LTS2000 Handheld Radio Service Manual Part 3 of 3
Contents
1. F2 Alignment Menu F3 TX Deviation Adjustment F5 Reference Oscillator Warp F7 Transmitter Power F8 Squelch Adjustment F6 Board Replacement Menu F2 Logic or RF Board Replacement F3Tx Power F4 Warp Reference Frequency F5 Tx Power Calibration F6 Tx Deviation Calibration L F9 Squelch Adjustment Figure 7 2 Service Menu Structure 0 Min Value He HY 15 Max Value MAEPF 22858 O Figure 7 8 Softpot Concept 7 2 68P02948C90 O February 1997 GTX GTX LTR LTS 2000 Portable Radios Service Manual 6 Press F6 again to dekey the radio and then press F8 to program the softpot value 7 Press F10 F10 to return to the SERVICE menu Squelch The squelch softpots set the signal to noise ratio at which the squelch opens 1 From the SERVICE menu press F2 to select ALIGNMENT TRANSMITTER amp RECEIVER 2 Press F8 to select SOUELCH Adjustment 3 Adjust the UP DOWN arrow key to the minimum squelch value 4 Setthe RF test generator to the test frequency plus 500 Hz offset 5 Adjust the UP DOWN arrow key until the squelch just closes 6 Monitor for squelch chatter if chatter is present continue to adjust the UP DOWN arrow Wait a few seconds and repeat step 7 7 When no chatter is detected press F8 to program this value Press ENTER to select next softpot adjustment 8 Press F10 F10 to return to the Se2. SHILD_890U01 SPI DATA SPI DATA U260 VCO SHIELD VCO 900MHZ SPI CLOCK SPI CLOCK 0270 C274 7 D74F VCOBIC 4 7PF SYNT_EN 1 VOC 5 IC gt TX_INJ 3 TX BIAS RX g 520 5 1 SEV TRB 5 2 FLIP PS OUT L270 V 2 Ped LOSE FILT_5V Ne A Yn MOD_IN cles 15NH TO U220 y GNDGND1GND4 T C221 l C264 CLOSE 3 3NF C272 L C275 TO U220 39PF T TX_RX C240 1 239 22NF C271 CR220 C223 C224 C225 0 1UF 3PF 228 A TRIPLE_DIODE 0 1UF 39PF 4 7UF 4 4 i 39PF E CLOSE IN SH229 TO U220 PS IN SHIELD zt PIN 32 OCK_DET VOLTAGE C229 A MULTIPLIER 39PF 5 ev SHIELD Ltt 8 18 R245 3 eeel C280 C281 292 C230 mi 0 1UF z x 39PF 0 1UF 620 FILT 5V n 4 0 1UF V 19 U220 voo S2 3 C24 R242 FR 6246 C247 L L 21 2 35l FREF_OUT LADAPT 22NF 10NF 3 3K 10NF 510PF 39PF DC 5V FRACTIONAL W46 55 NO 2 DEN 5V ENP LOUT
3. 0 1UF CBUFIN Rss gt RSSIIN FFIN VAG NFILIN FFCNTL CFBBYP 0 pee Bt NC CLIPREF gs 1 NOISHLD pe NC_2 COMPBYP pisc 25 HCIDSAB NC 4 EXPADJ C567 GND R555 C564 3300PF 1K 3300PF R557 ES C563 3300PF L C556 T 3 3UF R556 10 0K R554 100K R552 47 5K R553 1 5K C554 01UF R551 R550 22K 100K 551 BET E 73B02948C84 O 470PF SHEET 2 OF 5 ASFIC_MIC_AUD_OUT _ gt Schematic Diagram for FUF5690A RF Board Hear Clear 6 68P02948C90 O February 1997 8163 8164 im 3 C103 2 C438 0412 e 5 0410 i o e 8 R554 8 C563 R556 Rao 9405 R555 a E c235 VIEWED FROM SIDE 1 E275 x 8 5 Fs Ez 3 E53 9 5 ur Ea le 5118 s S ul U409 5 U405 25 z o ale 4 4 H 3 Q408 pss css e fe 8 9 6554 Rasa EE cio U260 VIEWED FROM SIDE 2 R152 52 53 64 55 56 57 44 45 46 47 48 49 50 4 39 40 41 42 34 35 36 25 26 27 30 31 32 33
4. 2113741F49 0 01 u F 2311049A40 2 2 uF 2113743E20 100 nF 2113743E07 22 nF 2113741F17 470 pF 2113741F49 0 01 uF 2311049J11 4 7 uF 2311049A07 1 uF 2113743F08 0 22 uF 2113741A45 10 nF 2113743E20 100 nF 2113743F01 0 1 uF 2113741A45 10 nF 2311049A01 0 1 uF 2113740F41 39 pF 2113740F41 39 pF 2113740F41 39 pF 2113740F41 39 pF 2113743K15 0 1 uF 2113743E20 100 nF 2113743E20 100 nF 2113740F41 39 pF 2113741F49 0 01 uF 2113743E20 100 nF 2113740F41 39 pF 2311049A07 1 uF 2113743E20 100 nF 2113743E20 100 nF 2113743K15 0 1 uF 2113740F41 39 pF 2113741F13 330 pF diodes see note 4813833C02 MMBD6100L LEDs 4805729G92 GREEN shield 2683423K03 423 0 connectors receptacle 0904658J02 edge 0980332L01 edge transistors see note 1 4813824A10 NPN 3904L 4882033T01 NPN 1_DTC144YK resistors 5 1 16 W unless other wise stated 0662057A97 100K 0662057A73 10K 0662057A97 100K REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO R705 0662057A89 47K R710 0662057A89 47K R725 0662057A94 75K R726 0662057A95 82K R753 0662057A73 10K R756 0662057A73 10K R763 0662057A65 4 7K R764 0662057A73 10K R790 0662057A81 22K R792 0662057A73 10K R793 0662057C55 150 R794 0662057C55 150 R795 0662057A85 33K R797 798 0662057A73 10K integrated circuits see note 1 U701 5105835045 ASFIC F83 1 U703 5108444849 X25320 U704 5180633 01 11950 0705 5105662054 Hybrid 32K 8 SRAM U706 5108444S41 SRAM 32Kx8 U707 5102463421 MSM6606 U709 510
5. 7 C102 l_ C108 za EM T 0 1UF C104 C107 NEAR P A NEAR P A 39PF 0 1UF MODULE MODULE NEAR P A NEAR P A SMBV1032LTI L162 wu MODULE MODULE 2 1 22NH SH121 ST STD 9111 SHIELD A S 4 COUPLER_34L01 SV1 SV2 SV4 TX IN RF OUT INPUT OUTPUT P HARMONIC FILTER 2 C OUTPUT C TERMINAL SHIELD 1 R87151 Ld NC ul C101 3 Rods A ue R164 2 zl MODULE 2 100K ee o gt N C R113 s R114 FK 3 3K C156 VVV 100 E Citi L C112 R112 E 39PF 158 0 220 1 ALL CAPACITORS MARKED NO PART NOT ASSEMBLED SWB V 2 ALL RESISTORS MARKED NO PART ASSEMBLED C155 C154 0 1UF 39PF 9133 LM2902DR 14 VVV a LM2902DR iss ES R158 5 6K 151 0 1UF LM2902DR E R141 CR141 6 8K MMBD6100L m R134 3 PX LM2902DR PWR REF VVV L mE 1 2 C133 0 1UF Dr RIT R149 sk gt VW 4 73B02948C84 O SHEET 4 OF 5 Schematic Diagram for FUF 5690A RF Board Transmitter Module February 1997 68P02948C90 O 5 C560 AUDIO 0 1UF SWB WV swB gt U550 CLEAR NFILOUT Di CENAB FFOUT lt RX IN gt CPNENAB EXPOUT C561 C550 FFENAB CBUFOUT 100NF COMPOUT j lt FILTERED AUDIO gt lt EXPIN _ LODSAB
6. GND 1 DUC ES DATA AUD 3 UP_CLK 73 BCS OPE R752 ET ray RX IN RX_IN SPI CLK 58 eLock SEGA EXTAL 78 RXD R795 l 0 1UF IX DATA Gil Rk CLK UNA pxl UNATT AUDIO et i mode m SEG3 Hilts me EDO 79 TXD IX Hej Rx E DETAUDIG lt lt DETAUDIO RESEF RESET SEG4 80 SPI DATA 0455 IX 4 NC 5 5 Ld 76 PD2H 797 100NF TXIN EXT RSSI RSSI 5 Asai 56 ter SWB Hus MODB VSTBY 203 5 GLK VDD DETAUDIO AN abel ay uk vag 98 VAG R468 5 di V LOWBATT 49 Pig EE SEL JI ADAPT ADAPT co SEG8 5 T PEO 60 PFO 0 C790 MIC B8 Ht sa 10K SEG9 48 59 1 330PF a7 MIC SQ DET LOCK DET LOCKDET7 42 C1 SEG1 10 VOL SENSE 48 PE1 PF1 2 Ct PL H2 CHACT LOCKDET Se fT i Born Mg Pra 99 2 4 4 82 CHACT DNE SYNE LE 48 Ice C763 lt R726 56 4 TK ENCODE NO K pL um E 44 SEG13 14 0 01UF 82K ROT2 46 55 5 PLENCODE C3 bi Ci MODIN y MODIN 9 MODIN SEGI 1 1 1 1 LL Pes PFS H J5 EXP AUD i CC b Pre 54 6 5V C720 IMING CAP EXP AUDIO 7 EMERG MON 10 46 secie 3 sot so2 H soa RSS 45 53 7 ge Y t ETT lt EMERG MON C4 SEG168 5 PE4 PF7 10NF ELA EE A5 C6 17 L P L CAP VOX NC E
7. SWB 5V 5R TXB 5R SWB 2424 R409 200K swa4ot SW FREQ 16POS 3 SWB 5V 5R 1 5V 5R SWB SQ ATT IN 1 Q401 SQ ATT IN NOT USED 39041 Goce sae CONNECTOR 2 DET_AUDIO 4200 4 C401 DET AUDIO SN 1 33K 39PF ANTENNA CONTACT TRANSMITTER DET_AUDIO T ANTENNA CONTACT ANT CONN RX_IN RX_IN RECEIVER RSSI J200 5 RSSI R401 10 32401 1 ADAPT 200 6 ADAPT GND 1 40 PWR_REF TX_INJ RX_INJ 2 s gt QU BIAS_EN TEMP SEL BATT 2 POLE HC CNTL a is MUTE TX_INJ 5R RX_INJ W LOCK_DET J200 7 WARP LOCK_DET LOCK_DET SYNT_EN J200 8 2 amp SYNT_EN SYNT_EN MOD IN MOD IN J200 9 MOD IN SPI DATA 2200 17 390 1 3K SPI CLOCK J200 24 SPI CLOCK m UNATT AUDIO 2 FILTERED AUDIO R402 swB B ans 0 2 1MHZ 200 28 ASFIC_MIC_AUD_OUT DTC144YK TX_RX 24MHZ R488 R489 R490 EXP_AUDIO dic oo 25 HC CNTL EXP AUDIO 1 2 AUDIO DISC RX IN WN C438 RSSI TX 4 TXIN SWB Q412 1 4 7UF a 3906L 18 25V V TP405 d Q410 HOLE 070 RESET J200 26 SN W68GLT1 HEAR CLEAR SPI CLOCK J200 24 22 aati 1688 3 BTA13 0405 C426 SN M2904DR 3 wp 1 FROM U400 17 MUTE 1 2 18NF EDGE1 EDGE2 EDGES EDGE4 EDGE5 EDGE6 GND EDGE 1 GND EDGE 2 GND EDGE 3 GND EDGE 4 GND EDGE 5 GND_EDGE 6 E D GND lenp ND U405 LM2904DR C437 E E 0 47UF R487 GROUND CLIPS
8. logic board assembled light pipe logic board shield battery latch spring 2 used latch shield clip 4 used front shield RF to Logic flexible circuit RF board assembled O ring gasket chassis insulator chassis FCC label Pad PTT contact B B battery filter board assembled battery standard belt clip LTR Mechanical Parts List 12 68P02948C90 O February 1997 GTX GTX LTR Exploded View 13 68P02948C90 O February 1997 LTS 2000 Mechanical Parts List REFERENCE SYMBOL 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 MOTOROLA PART NO 1580422K01 3380455 01 7580430 01 1380431 01 3880428 01 6180687 01 3280960 01 1380463 01 5880376L01 8505241U03 3680433 01 3680432 01 3580998704 3080560001 1480577 01 5013920 03 5005589005 7580506602 3980546802 7580685K01 7580428K01 FLN8514A 6180687 01 2680402 01 4105944 01 5580438 01 4280190R04 2680532C01 8408051Y01 FUF5690A 3286063C01 1480610B01 2780549B01 5480673K02 3286074601 3980188201 FLN8517A HNN9628 HLN9724 HLN8255 Not field repairable LTS 2000 Mechanical Parts List 14 DESCRIPTION front housing LCD cover part of 1580422K01 cannot be ordered separately name plate PTT keypad PTT beze dust cap light pipe seal 2 used escutcheon
9. 03689A15 1 REFERENCE SYMBOL C163 C165 C203 C204 C206 C207 C210 C211 C212 C213 C220 221 C223 C224 C225 C226 227 C228 230 C231 C232 C233 234 C235 C236 C237 C238 C239 C240 C241 C243 C245 C246 C247 C249 253 C258 C260 262 C263 264 C270 C271 C272 C274 C275 C280 C281 C282 C284 C285 C286 C290 C291 C292 C401 402 C408 409 C418 C419 C421 C424 C425 C426 427 C428 C429 C430 C436 MOTOROLA PART NO 2113740F41 2113740F41 2113740F41 2113743E07 2113743E07 2113740F41 2113740F41 2113743E07 2113740F41 2311049A07 2113741F37 2113743K15 2113740F41 2311049712 2113743K15 2113740F41 2113743K15 2113743E07 2113743K15 2311049A63 2113743K15 2113740F41 2311049A63 2113743K15 2113743E07 2105248W01 2109720D01 2109720D01 2113741F18 2113740F41 2109720D14 2113740F41 2113743E07 2113740F41 2113743E07 2113740F14 2113740F41 2113740F19 2113740F10 2113740F41 2113743K15 2113740F41 2113740F10 2113740F41 2113743K15 2113740F41 2113743K15 2113740F12 2113740F41 2113740F41 2311049C09 2113743E05 2311049A05 2113740F59 2113743E12 2113743E05 2113740F 41 2113741F 41 2113740741 2113740F41 DESCRIPTION REFERENCE SYMBOL C437 C438 C439 C441 C442 443 C444 C445 C446 C449 C451 C452 C453 C454 C455 C456 C457 C460 C461 C464 465 C466 468 C469 C470 C471 C472 475 C476 C477 C478 C479 C480 C481 C500 C550 C551 552 C553 C554 C555 556 C557 C558 C560 561 C562 C563 564 C56
10. 16 17 18 21 22 23 24 15 8 9 D dS 12 13 14 456 R133 2 C82 R67 a parts lists FUF5690A RF Board REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO capacitors pF 5 50V unless other wise specified C1 2103689A08 18 C2 3 2113741F49 0 01 uF C4 2113740741 39 C5 2113741F49 0 01 uF C6 2113740F41 39 C7 2113741F49 0 01 uF C8 2113740F10 2 C9 2113740F41 39 C10 2113741F49 0 01 uF C51 2113740F37 27 C53 2113740F35 22 C54 2113740F31 15 C55 2113743K15 0 1 uF C56 2113740F34 20 C59 60 2113743K15 0 1 uF C61 2113741F29 1500 C62 2311049A05 0 47 uF C63 64 2113740F41 39 C66 2113743K15 0 1 uF C67 2311049J11 4 7 uF C68 2113743K05 0 039 uF C69 2311049A11 3 3 uF C70 2113743K15 0 1 uF C71 2311049A63 10 uF C73 2113740F30 13 C74 2113740F40 36 C75 2113740F17 3 9 C77 2113740F 14 3 C79 2113740F32 16 C81 82 2113743K15 0 1 uF C83 2113740F41 39 C85 87 2113740F41 39 C101 102 2113740F41 39 C103 2113743K15 0 1 uF C104 2113740F41 39 C105 2113743E07 22nF C106 2311049A07 1 uF C107 108 2113743K15 0 1 uF C111 112 2113740F41 39 C122 123 2103689A15 1 C125 2113740F24 7 5 C126 2110368A15 1 C131 133 2113740F41 39 C141 142 2113740F41 39 C143 2113743K15 0 1 uF C151 2113743K15 0 1 uF C152 154 2113740F41 39 C155 2113743K15 0 1 uF C156 2113743E20 100 nF C158 2113743A23 0 220 C161 2113740F28 11 C162 21
11. 2057427 120 0662057B47 0 0662057A73 10K 0662057480 20K 0662057488 43K 0662057480 20K 0662057488 43K 0662057452 1 3K 0662057A39 390 0662057B14 470K 0662057A88 43K 0662057A80 20K 0662057A25 100 0662057A73 10K 0662057 81 22K 0662057A52 1 3K 0662057A39 390 0662057B05 200K 0662057 61 3 3K 0662057A67 5 6K 0662057A90 51K 0662057A97 100K 0662057A73 10K 0662057A57 2 2K 0662057B05 200K 0662057A37 330 0662057A56 2K 1880143S03 potentiometer 50 0K 0662057A01 10 0662057A65 4 7K 0662057A55 1 8K 0662057A49 1K 0611077A12 2 7 0611077A12 2 7 0662057A99 120K 0662057A97 100K 0662057A97 100K 0662057A37 330 0662057A41 470 0662057G13 100K 0662057 81 22K 06620579892 47 5K 0662057A53 1500 0662057G13 100K 0662057R30 1000 0662057R60 10K 0662057A97 100K shields 2680456K01 LNA shield 2605417V01 mixer shield 2680471K01 harmonic filter shield 2680510K01 synthesizer shield 2605259V01 voltage multiplier shield 2680470K01 loop filter shield 2605890U01 VCO shield 2680456 01 RX injection buffer shield REFERENCE SYMBOL SWA401 TP401 TP402 U50 U51 U101 0111 0151 0210 0220 0260 0270 0400 0405 0409 0410 0420 0550 MOTOROLA DESCRIPTION PART NO switch 4080650D01 rotary switch test points contacts 3980442K02 antenna ground 3980443K02 antenna contact integrated circuits see note 1 0108106L10 MIXER_MOT91 5180207R01 IFIC 5108038H16 Module PA for 900 MHz 5880334L01 COUPLER 900 MHz 5113819A02 LM2902DR 510284
12. 2460591401 4 2 nH L2 2462587112 56 nH L3 2460591401 4 22 nH L51 L52 2483411T69 0 47 uH L53 2462587M19 1200 nH L55 2483411774 1 2 uH L58 2483411T74 1 2 uH L121 2460591A11 7 66 nH L122 2413926E11 10 0 nH L161 2460591A11 7 66 nH L162 2462587V26 22 nH L163 2462587V36 150 nH L206 2462587130 1 0 uH L246 2462587P24 10 uH L270 2462587V24 15 nH L290 2413926E11 10 0 nH L404 407 2462587117 150 nH L420 2462587117 150 nH L460 2462587117 150 nH pushbutton switches PB1 PB3 4080485C05 pushbutton switch transistors see note 1 Q1 4813827418 NPN 2E MRF9411L Q51 4813827A07 NPN MMBR941 Q151 4813824A10 NPN 3904L Q152 4813824A17 PNP 3906L Q280 4813824A17 PNP 3906L Q281 4813827A07 NPN MMBR941 Q400 4880141L03 PNP BCW68GLT1 Q401 4813824A10 NPN 3904L Q405 4813824A17 PNP 3906L Q408 4813824A17 PNP 3906L Q410 4880141L03 PNP BCW68GLT1 Q411 4813824A06 NPN Darlington BTA13 Q412 4813824A17 PNP 3906L Q413 4882033T01 NPN DTC 144YK Circuit Board Details and Parts List for FUF5690A RF Board February 1997 68P02948C90 O 7 REFERENCE SYMBOL R1 R2 R3 R4 R5 R6 R21 R22 R23 R51 R52 R53 R54 R55 R57 R58 R60 R64 R66 R67 R78 R112 R113 R114 R131 R132 R133 R134 R141 R142 R143 R144 R145 R146 R147 R148 R149 R151 152 R153 R154 R155 R156 R157 R158 R161 162 R163 R164 R232 R237 R238 R242 R244 R245 R258 R270 R274 R280 R282 Parts List for MOTOROLA PART NO DESCRIPTION resistors Q 5 1 16 W unless
13. 2463J20 MC68HC11K1 Zener diodes see note 1 VR707 4813830A27 MMBZ5244L Notes 1 For optimum performance diodes transistors and integrated circuits must be ordered by MOTOROLA part numbers 2 When ordering quartz crystal units or ceramic resonators specify carrier frequency crystal or resonator frequency and crystal or res onator type number R753 SWB VDD ae V V C742 I U703 TP9 VDD i SPI DATA Q 3904L Y VDD a A T 2 Sonoro 2 a 3 Rie 39PF EE_SEL 1 45
14. 3380455K01 logo 1 3580998704 speaker felt 1 3880428601 dust 2 4105944 01 battery latch spring 1 5580438B01 latch 1 5880376L01 adapter antenna 1 6180687K01 light pipe 1 7580430K01 PTT keypad FLN8515A Hardware REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO Qty non referenced items 1 8408050Y01 flexible circuit 1 7204616J01 LCD display FLN8518A Chassis Hardware REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO Qty non referenced items 1 1480610B01 insulator chassis 1 2780549B01 chassis 1 3980188R01 Contact B B 1 5402498S01 label 16 68P02948C90 O February 1997 FLN8574A Miscellaneous Parts GTX REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO Qty non referenced items 1 2680402 01 logic board shield 1 3202386L03 RFI shield 1 6180687K01 light reflector 1 7580427K01 main keypad 1 7580685 01 pad FLN8576A Miscellaneous Parts LTS 2000 REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO Qty non referenced items 1 2680402 01 logic board shield 1 3202386L03 RFI shield 1 6180687K01 light reflector 1 7580428K01 main keypad 1 7580685K01 pad FLN8575A Shield amp Parts REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO Qty non referenced items 1 2680532C01 front shield 4 4280190R04 shield clip FLN8577A Miscellaneous Parts GTX REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO Qty non referenced items 1 3286063C01 O ring rectangular 1 3680447K01 volume knob 1 3680448 01 freq
15. 5 C567 C574 CR1 CR51 CR111 112 CR141 CR161 162 CR220 CR405 CF51 CF52 MOTOROLA PART NO DESCRIPTION 2311049A05 0 47 uF 2311049J11 4 7 uF 21137417549 0 01 uF 2113743 15 0 1 uF 2113741 25 1000 2113740741 39 21137417549 0 01 uF 2113740741 39 2113740F41 39 2113740F41 39 2311049J11 4 7 uF 2113740741 39 21137417549 0 01 uF 2113740741 39 21137417549 0 01 uF 2113740F41 39 2113740F41 39 2113743 15 0 1 uF 2113743K15 0 1 uF 2113740F41 39 2113743E12 47 nF 2113741F17 470 2113740F43 47 2113740F41 39 2113741F49 0 01 uF 2113740F41 39 2113741 49 0 01 uF 2113740F41 39 2113740F57 180 2113740F41 39 2113743A23 0 22 uF 2113743A19 0 1 uF 2113741F17 470 2311049A04 0 33 uF 2113741F49 0 01 uF 2311049A42 6 2113741F49 0 01 uF 2311049A04 0 33 uF 2113743K15 0 1 uF 2113743A19 0 1 uF 2113741A33 3 3 nF 2113743K15 0 1 uF 2113741A33 3 3 nF 2113741A33 0 01 uF diodes see note 4880154 03 3531 4880154 03 3531 4805218N57 Schottky R87151 4813833C02 MMBD6100L 4805129M96 SMBV1032LTI 4802233J09 triple diode 4880107R01 BYD17D filters ceramic 9180453B04 filter 455 KHz 9180454Bo4 filter 455 KHz REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO LEDs DS401 4805729G49 LED Red Yel ferrite bead E101 2484657R01 ferrite bead filters FL1 2 9102603525 938 connectors receptacle J3 0180417601 External microphone speaker jack J5 0180159R03 Speaker mic header J6 0180965701 connector B J200 0904358402 edge coils L1
16. 5C11 VCO 16 8 MHz 5105457W46 SCW39129ZP 5105279V01 VCO 900MHZ 5105662076 D74F VCOBIC 5105226P38 D A 5113818A01 LM2904DR 5180175R01 TDA7052 5180159R01 POLARITY IMX1 5113816A23 LP2951ACDR2 5105662U60 Hear Clear REFERENCE SYMBOL VR436 VR460 Y51A Y51B Y53 Qty Ll al Notes MOTOROLA PART NO DESCRIPTION Zener diodes see note 1 4813830A23 MMBZ5240BL 4813830A18 MMBZ5235L crystals see note 2 9180112R06 filter 45 1 MHz Set of 2 4880008K02 crystal 44 645 MHz non referenced items 4280138R03 butterfly clip 1405160A02 crystal insulator 5404977P01 Label Board Serial Number 7505295B07 Pad XTAL base 4280429 01 PA clip 1 For optimum performance diodes transistors and integrated circuits must be ordered by MOTOROLA part numbers 2 When ordering quartz crystal units or ceramic resonators specify carrier frequency crystal or resonator frequency and crystal or res onator type number BATTERY FILTER BOARD J3 SCI SCI m 39PF F1 cua 2 1 2 J1 V et L c2 EH C4 ii 39PF lt V 73A02951C19 O FLN8517A Battery Filter Board REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO capacitors fixed pF 5 50 V unless otherwise specified C2 C4 2113740F41 39 coils RF L1 L2 2484657R01 ferrite bead fuse F1 6580561D01 fuse Qty non referenced item 1 3980165902 contact B VIEWED FROM SIDE 1
17. 82 R50 R67 NU PART cse 0 1UF zs 20 Y51A 3 Y51B 2 45 1MHz C54 Fry o 45 1MHz R78 MMBR941 NPN 3 0 Ph i53 C77 R53 C57 L54 L55 C58 1200NH 12K T NO NO 2 1200NH NO PART PART PART zi 2 1 LI C59 0 1UF CR51 MMBD353LT 1500PF N C _ gt 80 ATT IN DET AUDIO RSSI JADAPT 28 PREAMP 1 PREAMP OUT S RSSI_OUT 55 It MIXER_IN U51 RSSI BYP C60 LO IN 0 1UF SQ LIM OUT 2 OSC_OUT SQ_RECT_IN 52 OSC_FB ADAPT SQ OUT hs TR bo CHAN_DET 50 SQ NOISE 005 DAVE 89599 5 3 9PF tr t cr cr Bde gt O 000 R60 ES 7 5K C85 C81 Sea 39PF 0 108 cer R58 C64 C86 C87 C83 C66 T 4 7UF 13K 39PF 39P T 0 1UF 69 3 3UF 39PF 1 ALL CAPACITORS MARKED NO PART ARE NOT ASSEMBLED 2 ALL RESISTORS MARKED NO PART ARE NOT ASSEMBLED Y53 _L_ ces R57 44 645MHZ T 039UF lt 130K 5v i dn 1 C79 T 16PF us 71 10UF 0 1UF L58 coe Ec 1200NH 73B02948C84 O SHEET 3 OF 5 Schematic Diagram for FUF5690A RF Board February 1997 68P02948C90 O Receiver Module FILT_5V 1 0UH L206 7 5 gt IV YY C207 C206 39PF 22NF C260 BH 22NF SH260 gt gt gt
18. ATT AUDIO 9 SEG3 000E2 UNATT AUDI 35 gt gt gt VDD d iS cu 35 e sp y VOL_SENSE20 rcx SEG37 TX IN 21 55 1 1 1 1 USD MK TX_IN 8 4 2 INT_EXT_PTT22 b EXT secot zg H soo H sto Hsi H s12 Ciel 555 0740 INT_EXT_PTT SEG4Q c 100NF 39PF sci 23 BLANH 2 2 2 2 4 EPROM FLASH g m ibi a 7 voc E LL 00 3 encor ock T LD 6746 C787 R798 20 ao DACLE25 19 M DACLE DACLE 100NF 10K 0705 DATA BUS 0 7 m RESET 1 LL DATA_BUS 0 7 lt C738 RESET eer 28 16 39PF ME 15 2 GND lt ND 1 1 1 x 4 5 VPP BOOTJ750 1 5 m 7 ioo n P CR707 lt PP 1 519 c7 2 1MHZ28 700 DISPLAY DRIVER sis 14 H 15 ste TA 102 MMBD61008 NIAE IK 21 470PF EAS 2 2 2 2 7142 U706 03 2 8 J700 4 5 104 10 31 A9 1 5 A4 105 d 27 A5 106 5 x 3 6 107 13 gy 12 2 761 251 197 14 A VR707 T 39PF zg 8 15 7414 MMBZ5244L AS 884256 10 15 C777 S QI PS38 10 SRAM 27 6 16 AUF 23 ips WE gt 539 SHIELD 2 MEMWR EN ROME ag 17 Fal gt 540 26 12 20 06 J750 32 73D02948C96 O OPS41 E01 A13 cs RAM_CE1 Tx_Data_to_Fl
19. Maintenance GTX GTX LTR LTS 2000 Portable Radios Service Manual This page intentionally left blank 6 4 68P02948C90 O February 1997 Section 7 Radio Tuning Procedure Radio Tuning Procedure General An IBM PC personal computer and RSS Radio Service Software are required to align the radio Refer to the applicable RSS Manual for installation and setup procedures for the software To perform the alignment procedures the radio must be connected to the PC RIB Radio Interface Box and Test Set as shown inFigure 7 1 All SERVICE screens read and program the radio codeplug directly you do NOT have to use the RSS GET SAVE functions to program new tuning values SYSTEM ANALYZER R2000 SERIES RF CABLE AUDIO AUDIO OUT IN RKN4034 OO OO OO RTX4005B e TEST SET CABLE CAUTION Do NOT switch radios in the middle of any SERVICE procedure Always use the EXIT key to return to the MAIN menu screen before disconnecting the radio Improper exits from the SERVICE screens may leave the radio in an improperly configured state and result in seriously degraded radio or system performance The SERVICE screens use the concept of the Softpot an analog SOFTware controlled POTentiometer used for adjusting all transceiver alignment controls Each SERVICE screen provides the capability to increase or decrease the softpot value with the COMPUTER poe 7 5 VDC POWE
20. PART C231 15 XTALI MOD OUT 57 a eo C Gell 0 1UF XTAL2 CPBAIS1 L246 39PF 22NF 16 CLOSE 6 warp CPBAIS2 10UH TO U220 umo L er ZR ES ME 1 VCO 16 8MHZ gt VCC os R282 WARP gt VwarpOUT Te ue l GND C237 C284 aie UE zs C233 C234 C236 gor eer EX C204 0 1UF 0 1UF 0 1UF 22NF AT T CLOSE CLOSE C235 CLOSE C238 0220 0220 10UF TO U220 7 PIN 19 PIN 22 PIN 23 Ta ree ae Co83 C285 ll C286 M AT SHIELD TP231 22NF T 0 1UF TX gt TX NO INJ BUFFER PART SHIELD SH220 SH250 ES SHIELD SHIELD SYNTHESIZER LOOP FILTER SHIELD SHIELD LOCK_DET Lock pET R258 100 2 1 MHZ 122 gt 24MHZ 1 ALL CAPACITORS MARKED NO PART ARE NOT ASSEMBLED CLOSE TO U220 C258 2 ALL RESISTORS MARKED NO PART ARE NOT ASSEMBLED 39PF CLOSE TO U220 73B02948C84 O SHEET 5 OF 5 Schematic Diagram for FUF5690A RF Board Synthesizer Module 4 68P02948C90 O February 1997 39PF RX_IN 2 4 LII SWB swe gt L cte L cies 5V 7T 1PF AT 1PF E101 C105 T 106 NO Syene BEAD 22NF 1UF T pane L121 C125 5V ANT CONN TXB 9108 3 V 7 5PF 0 1UF L122 TXB gt NEAR BEAD 10n
21. R SUPPLY RADIO ANTENNA ADAPTER PORTABLE TEST SET PROGRAMMING CABLE BATTERY ELIMINATOR RTX4005B HKN9857 RIB RLN4008B 110 VAC Figure 7 1 Radio Alignment Test Setup February 1997 68P02948C90 O 7 1 Radio Tuning Procedure GTX GTX LTR LTS 2000 Portable Radios Service Manua Tuning Procedure keyboard UP DOWN arrow keys respectively A oscillator should be checked every time the radio is graphical scale is displayed indicating the minimum serviced The frequency counter used for this maximum and proposed value of the softpot as procedure must have a stability of 0 1 ppm or better shown in Figure 3 1 From the SERVICE menu press F2 to select Tuning Procedure ALIGNMENT TRANSMITTER amp RECEIVER NOTE 2 Press F5 to select the REFERENCE Perform the following procedures in the OSCILLATOR softpot sequence indicated 3 Press F6 to key the radio The screen will Reference Oscillator Alignment indicate that the radio is transmitting Adjustment of the reference oscillator is critical for 4 Measure the transmit frequency on your proper radio operation Improper adjustment will not frequency counter only result in poor operation but also a misaligned radio that will interfere with other users operating on 5 Use the UP DOWN arrow keys to adjust the adjacent channels For this reason the reference reference oscillator Service Menu
22. R498 1 8K NC OUTPUT1 0 RX_AUDIO INPUT 4 CL5 CL6 CL7 CL8 CL9 NO PART NC1 OUTPUT2 C471 R486 C470 C469 NDGND1 R499 47PF 4 7K 470PF 47NF S NO PART 1 ALL CAPACITORS MARKED NO PART ARE NOT ASSEMBLED 2 ALL RESISTORS MARKED NO PART ARE NOT ASSEMBLED U420 LP 2951AC DET AUDIO gt gt SWB4SOURCE 2 CR405 BYD17D 1 1 MMBZ5235L LOCK DET SYNT EN MOD IN C446 C449 i 39PF J6 B SCI IN RX IN Ee H ADAPT MOD IN Saar bere XP AUDIO 44 EXP AUD 131 lt 2 2 5V 5V 5 171 2 lt DATA C428 39PF L407 150NH L404 150NH C429 RX_AUDIO C444 39PF 444 2 C481 C408 C436 VR436 39PF 1 INT_MIC 3 INT_SPKR UNATT AUDIO 201 TX IN 21 TXIN 22 INT_EXT_PTT scl SPI CLOCK 26 RESET 28 2 1MHZ INT_SPKR C442 1000PF J3 EXT_MIC_SPKR 1000PF 73B02948C84 O SHEET 1 OF 5 RX_INJ lt 5 R3 270 LNA SHIELD 4 2NH CR1 3 W 5 1 C10 IN 938MH 0 01UF FL2 CASE LNA SH2 SHIELD 1 MIXER SHIELD R21 470 NO MIXER SH51 SHIELD 1 CF51 INP 455K OUTP GND GND MIXER_MOT91 LO gu 050 IF Np P Papa L51 0 47UH C
23. V SPI CLK a 5 CS 3 R763 zzz e x SCK WP V RESET ANA EPROM FD a 4 PA2 3 REF 22958 747 eras VDD 8 39PF 0786 SWB Y DS703 DS704 i p764 U709 PA3 100NF ZT TOONE 21 39PF gt vop R700 R794 GREEN GREEN pi PL ENCODE sj VIN U704 R403 C407 x AN 150 uP CONTROLLER PAS 5 TX DATA ADD BUS 0 17 VOUT 4 100K 2 2UF E HH 100K gt 5 MAE INT EXT PTT BYPASS LA C745 PA Bie 8 3 S S PBO L 2 RESET OUT C765 ppt 20 2 od CONTROL 100NF 19 C406 VES R793 05701 08702 EHT 11 pel vi k RSSI 0 01UF T EZ J700 coma 4 480 GREEN GREEN b 17 12 UP_CLK Di OK agai 68 j lt uec z mE 13 B 83 pps H 0 pe U707 A 71 6 5 NC 908 _1 o7 wc BS MEC i T VS 61 pay DATA BUS 0 7 NOg IGCB 2 Bt MBGAREE 60 TNT SIGCB_3 RF J700 ma C700 N22NF RESET 75 PCO J750 5V 47 a ops RESET PC1 lt SIG_NAME s 0701 E2NC E 48 P2 _ _ PC2 scl Fz GCB 5 XTAL OUT 1 28 a0 VPP 30 PGM_ENA ASFIC SWB SWB R2 gt 0TPS3 XIRQ PC3 766 875 12 2 G4 RX_DATA 9 lt SONC 2 PCI 9 HMM GND 2 palo NC A XTAL PCS C788 RX IN VA SPLDATA E3P AS RES RXAUDIO
24. VIEWED FROM SIDE 2 Circuit Board Details Schematic Diagram amp Parts List February 1997 for FLN8517A Battery Filter Board 68P02948C90 O 9 VIEWED FROM SIDE 1 r DS702 S DS701 tof 32 17 R793 746 0787 22 7 U706 05704 DS703 21 8 747 753 C758 U701 U709 C718 Circuit Board Details amp Parts List for FLN8836A Logic Board 10 68P02948C90 O February 1997 e o g R763 R726 C763 R725 N m s C738 VIEWED FROM SIDE 2 1 J701 34 S04 S03 S02 S01 16 15 14 13 10 S09 S08 S07 12 S11 S06 S05 parts list FLN8836A Logic Board REFERENCE SYMBOL C406 C407 C435 C700 C707 C708 C710 C711 C716 C717 C718 C719 C720 C721 C733 C737 C738 0741 747 C752 C754 C758 C761 C763 C765 C769 C777 C781 C786 787 C788 C789 C790 CR707 708 DS701 704 E01 J700 J750 Q1 Q2 R403 R468 R700 MOTOROLA PART NO DESCRIPTION capacitors 5 50 V unless other wise stated
25. XP AUD 11 SEG1 2 2 2 PGOL2 ADAPT i C5 8 lt 46 os SEG18 18 2 EMERG pE5 Pat 39 MEM 1 x C721 T E 4 Ow 5 EXP_AUD di EE 1 Z LOCK DET 43 PG2 57 MS 16 952 gaur pe D C P REF NC C733 C737 l C769 12 lt SPI DATA 59 DATA IO sEGed 20 ae PES 55 1 CR708 4 7UF p7 BUFF DISC C8 Z 39PF T 39PF T Z 39PF ROT d 21 4 MMBD6100L 716 CAP PRE AMP 18 SEG2 42 35 SYNTHLE 3 o22UF VCO ATN ROT2 57 oad Sead 22 9 PGS ERI C719 i cat pal LIM HS MODIN 123 E Pae 34 ENAB 1 R710 6 VOLS VAG 14 SEG24 7 35 MEM_WR_EN CANA 22299985 829 2506 7 2 5VDC 5 024 25 5 22 IX C718 SS 66000006600 C708 SEG2 PHO 22 47K 5 0 0 15 26 23 LOAD 0 1UF 100 n Jou cof eo 10 ol co 45V 5 0VDC SEG2 5 PH1 m eu ui SSS 24 SEG21 27 7 1 1 1 1 PH2 55 28 PH3 E NC x MIC MICIN H L SEGad 29 a L sos 506 L sos 46 _ DACLE m SPI DATA17 Ho T pus 27 SPI DATA SEG3 4 2 2 2 e o 28 CE1 J750 C789 31 zzz PHe 8 LT XD RXAUDIO 18 1 5 28 5 RXAUDIO 93 gala 1B UN
26. antenna adapter antenna whip frequency knob volume knob speaker felt speaker mic cable microphone boot microphone speaker speaker pad front shield ground contact pad keypad heat sealed flexible cable LCD 7 segments 8 characters 8 annunciators logic board assembled light pipe logic board shield battery latch spring 2 used latch shield clip 4 used front shield RF to logic flexible circuit RF board assembled O ring gasket chassis insulator chassis FCC label Pad PTT contact B B battery filter board battery standard belt clip 68P02948C90 O February 1997 LTS 2000 Exploded View 15 68P02948C90 O February 1997 miscellaneous parts lists FHN5873A Housing GTX REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO Qty non referenced items 1 1380159S01 PTT bezel shadow black 1 1386080C01 escutcheon 1 1580421K01 housing 1 5880376K01 antenna nut 2 3280960Y01 seal 1 3286074C01 pad ptt 1 3380425K01 logo 1 3580998704 speaker felt 1 3880428C01 dust cap 2 4105944 01 battery latch spring 1 5580438 01 latch 1 5880376L01 adapter antenna 1 6180687K01 light pipe 1 7580427C01 PTT keypad FHN5874A Housing LTS 2000 REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO Qty non referenced items 1 1380431K01 PTT bezel 1 1380463K01 top escutcheon 1 1580422 01 housing 1 5880376K01 Antenna nut 1 3280960Y01 seal 1 3286074C01 pad ptt 1
27. ash OE C754 1 2 MEM WR EN 7 we SHIELD_2P 14 100NF 20 R792 VPP 9 SK gt 0 543 1 9 GND ADD_BUS 0 17 10K GND VPP 14 27 I SHORT WHEN PROGRAM grs L ADD_BUS 0 17 EI VDD ee pan Schematic Diagram for FLN8836A Logic Board February 1997 68P02948C90 O 11 GTX GTX LTR Mechanical Parts List REFERENCE MOTOROLA SYMBOL PART NO 1 1580421 01 09 3 3380425K01 4 3286074C01 5 1380159501 6 3880428601 7 6180687Y01 8 3280960Y01 9 1386080C01 10 5880376L01 11 8505241U03 12 3680448K01 13 3680447K01 14 3580998204 15 3080560001 16 1480577C01 17 5013920A03 18 5005589U05 19 7580506C02 20 3980546B02 21 7580685K01 22 7580427K01 23 en 252 A 25 FLN8514A 26 6180687K01 27 2680402 01 28 4105944 01 29 5580438 01 30 4280190R04 31 2680532C01 32 8408051 Y01 33 FUF5690A 34 3286063C01 35 1480610B01 36 2780549B01 37 5480673K02 38 3286074C01 39 3980188R01 40 FLN8517A 41 HNN9628 42 HLN9724 HLN8255 Not field repairable DESCRIPTION front housing LCD cover part of 1580421K01 cannot be ordered separately name plate PTT keypad PTT bezel dust cap light pipe seal 2 used escutcheon antenna adapter antenna whip frequency knob volume knob Speaker felt speaker mic cable microphone boot microphone speaker speaker pad front shield ground contact pad keypad heat sealed flexible cable LCD 7 segments 8 characters 8 annunciators
28. djust the deviation until the value in step 5 and the value in step 6 are equal 8 Press F6 to dekey the radio Press ENTER to move to next softpot value 9 Press F8 to program the softpot value Transmit Deviation Limit The transmit deviation limit softpot sets the maximum deviation of the carrier Tuning is performed for 25 kHz channel spacing 1 Press F10 to select the DEVIATION LIMIT ADJUSTMENT softpot The screen will indicate the transmit test frequencies to be used 2 Begin with the lowest test frequency shown on the screen 3 With Test Box 4460A inject a 1 kHz tone 2000 mVrms 4 Press F6 to key the radio and use the UP DOWN arrow keys to adjust the deviation between 2 1 kHz and 2 4 kHz for 900 MHz 5 Press F6 to dekey the radio Press ENTER to move to the next softpot value 6 Press F8 to program the softpot value 7 Press F10 F10 to return to the SERVICE menu 68P02948C90 O 7 3 Radio Tuning Procedure GTX GTX LTR LTS 2000 Portable Radios Service Manua This page intentionally left blank 7 4 68P02948C90 O February 1997 SCHEMATIC DIAGRAMS CIRCUIT BOARD DETAILS amp PARTS LISTS 68P02948C90 O Schematic Diagram for FUF5690A RF Board Wiring Diagram 68P02948C90 O February 1997 5V V 5 SWB V T Q400 R419 BCW68GLT1 PB401 10K 2 3 MON D TXB SOURCE 215 SL 1 2 8416 R404 R405 R406 R407 R400 10K 10K 10K 10K
29. ist Page No o General comments suggestions PLEASE USE TAPE TO SEAL POSTAL REGULATIONS PROHIBIT USE OF STAPLES REPLACEMENT PARTS ORDERING ORDERING INFORMATION When ordering replacement parts or equipment information the complete identification number should be included This applies to all components kits and chassis If the component part number is not known the order should include the number of the chassis or kit of which it is a part and sufficient description of the desired component to identify it Crystal and channel element orders should specify the crystal or channel element type number crystal and car rier frequency and the model number in which the part is used Orders for active filters Vibrasender and Vibrasponder resonant reeds should specify type number and fre quency should identify the owner operator of the communications system in which these items are to be used and should include any serial numbers stamped on the components being replaced MAIL ORDERS Send written orders to the following addresses Test Equipment Manuals Motorola Inc 1313 E Algonquin Road Schaumburg IL 60196 Replacement Parts Federal Government Orders International Orders Motorola Inc Crystal Service Items Americas Parts Division Americas Parts Division Motorola Inc Attention Order Processing Attention International Americas Parts Division 7230 Parkway Drive Order Processing Attenti
30. on Order Processing Landover MD 21076 1313 E Algonquin Road Schaumburg IL 60196 TELEPHONE ORDERS Americas Parts Division 1 800 826 1913 For Federal Government Orders Call 847 576 8012 1 847 538 8023 International Orders TELEX FAX ORDERS Americas Parts Division FAX 847 538 8198 Domestic 847 576 3023 International Parts ID 847 538 8194 Telex 280127 Domestic 403305 International Federal Government Orders FAX 410 712 4991 PARTS CUSTOMER SERVICE Americas Parts Division Call 1 800 422 4210 Parts Identification Call 847 538 0021 PRODUCT CUSTOMER SERVICE Customer Response Center Sales and Service Assistance Call 1 800 247 2346 FAX 1 800 232 9272
31. other wise stated 0662057A83 27K 0662057A83 27K 0662057A35 270 0662057A35 270 0662057A33 220 0662057A38 360 0662057A41 470 0662057A01 10 0662057A41 470 0662057A18 51 0662057A85 33K 0662057A75 12K 0662057A56 2K 0662057A25 100 0662057B01 130K 0662057A76 13K 0662057A70 7 5K 0662057A67 5 6K 0662057A47 820 0662057A69 6 8K 0662057B47 0 0662057A18 51 0662057A65 4 7K 0662057A61 3 3K 0662057A55 1 8K 0662057A52 1 3K 0662057A92 62K 0662057A92 62K 0662057A69 6 8K 0662057A87 39K 0662057A89 47K 0662057A89 47K 0605621T02 thermistor 50K 0662057A89 47K 0662057A89 47K 0662057A43 560 0662057B47 0 0662057A89 47K 0662057A65 4 7K 0662057B47 0 0662057A89 47K 0662057A39 390 0662057A36 300 0662057A67 5 6K 0662057A45 680 0662057A18 51 0662057A97 100K 0662057A49 1K 0662057A95 82K 0662057B02 150K 0662057A61 3 3K 0662057A18 51 0662057A44 620 0662057A25 100 0662057A77 15K 0662057B47 0 0662057A76 13K 0662057A73 10K FUF5690A RF Board Cont 68P02948C90 O February 1997 REFERENCE SYMBOL R285 R290 292 R400 R401 R402 R404 407 R408 R409 R410 R411 R412 R413 R414 415 R416 R417 R418 R419 420 R421 R422 R423 R424 R438 R447 R448 R449 R450 R451 R452 R453 R454 R460 R467 R486 R487 R488 R489 R490 R491 R492 R494 R496 R497 R550 R551 R552 R553 R554 R555 R556 R557 SH2 SH51 SH121 SH220 SH229 SH250 SH260 SH283 MOTOROLA DESCRIPTION PART NO 0662057A40 430 0662057A44 620 0662057A45 680 066
32. rvice menu Transmitter Power 1 From the SERVICE menu press F2 to select ALIGNMENT TRANSMITTER amp RECEIVER 2 Press F7 to select the Tx POWER calibration softpot The screen will indicate the transmit test frequencies to be used 3 Press F6 to key the radio and use the UP DOWN arrow keys to adjust the transmit power value Press F6 to dekey the radio Press ENTER to select next softpot frequency 4 Press F8 to program the value 5 Press F10 F10 to return to the SERVICE menu Transmit Deviation Balance Compensation amp Deviation Limit Compensation alignment balances the modulation sensitivity of the VCO and reference modulation synthesizer low frequency port lines Compensation algorithm is critical to the operation of signaling schemes that have very low frequency components e g DPL and could result in distorted waveforms if improperly adjusted February 1997 Tuning Procedure 1 From the SERVICE menu press F2 to select ALIGNMENT TRANSMITTER amp RECEIVER 2 Press F3 to select the transmit deviation balance and deviation limit softpot The screen will indicate the transmit test frequencies to be used 3 Begin with the lowest test frequency shown on the screen 4 Press to select 60 Hz 5 Press F6 to key the radio Record this measurement 6 Press F6 again to dekey the radio and press F4 to select 2 5 KHz 7 Press F6 to key the radio then use the UP DOWN arrow keys to a
33. the appropriate boxes Proceres Al gne s Pnn ire ese Sehen 25 E Board E Leta x Harte T Liste Forts 2 How would you rate the overall organization of this manual Llexcellent Llvery good L1good 3 Did this Service manual provide you with the information necessary to service and maintain the specific equipment Llvery much so Llgenerally yes Cito some extent 4 How do you rate this particular Service Manual Llexcellent Llvery good 5 We would appreciate any corrections or recommendations for improving this manual Please include the specific page number s of the diagram or procedure in question a Disassembly Procedures Page No b Alignment Procedures Page No c Exploded Views Page No NO POSTAGE BUSINESS REPLY MAIL FRSTCLASS MAIL PERMIT NO 904 FT LAUDERDALE FL qm ur POSTAGE WILL BE PAID BY ADDRESSEE NENNEN Sa MOTOROLA Vg i Attention Media and Communication 8000 Sunrise Boulevard Ft Lauderdale FL 33322 all ull deed ll Continued Please specify the page number along with any corrections or recommendations for improvement d Schematic Diagrams Page No Component Location Details Page No Electrical Parts List Page No Exploded View Parts L
34. uency knob 1 5480673K02 FCC label 1 8408051 Y01 rf to logic flexible circuit FLN8665A Miscellaneous Parts LTS 2000 REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO Qty non referenced items 1 3286063C01 O ring rectangular 1 3680432 01 volume knob 1 3680433K01 frequency knob 1 5480673K02 FCC label 1 8408051 Y01 rf to logic flexible circuit FSN5509A Speaker amp Microphone Assembly REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO Qty non referenced items 1480577C01 microphone boot 2113740F 41 chip capacitor 39 5 50V 3080560D01 speaker mic cable 3980546B02 front shield ground contact 5005589U05 speaker 5013920A03 microphone 7580506C02 speaker pad ee ee ee ee ee Ce NAF5039A Antenna REFERENCE MOTOROLA DESCRIPTION SYMBOL PART NO Qty non referenced item 1 8505241U03 whip antenna 900 MHz February 1997 68P02948C90 O 17 18 68P02948C90 O February 1997 Notes Cut along dotted line SERVICE MANUAL QUESTIONNAIRE We believe that reports from users provide valuable information for producing quality manuals By taking a few moments to answer the following questions as they relate to this specific man ual you can take an active role in the continuing effort to ensure that our manuals contain the most accurate and complete information of benefit to you Thank you for your cooperation In reference to Manual Number 68P02948C90 O GTX GTX LTR LTS 2000 Portable Radios 1 Please check all
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