Kenwood TKR-750 Service Manual Download

Page: 55 / 101

C21

C22

C27

C28

C29

C31

C32

C37

C42

C53

C46

C49

C54

C55

C57

C64

L16

C68

C69

C70

C71

C72

C74

C77

C91

C92

C96

C99

L10

L11

L12

R71

CN51

C106

CN52

D51

D52

IC1

C112

C117

C118

R10

R11

R13

R14

R15

R16

R17

R18

R19

R20

R21

R22

R23

R24

R25

R26

C136

R27

C137

C
B

R28

R29

R30

R31

R32

C143

R34

R35

R36

C165

R38

L17

R40

R41

R70

R45

VR1

R48

R49

R50

C161

C162

R52

C163

R53

C164

C47

R57

R61

R62

R63

R64

CN1

TX IN

CN3

ANT SW

GND

PDT

BUP

TMP

CN4

CN5

CN6 MAIN DC

(RED)

CN7 BACKUP

(ORANGE)

GND

+B2

GND

+B1

CN8 GND

(BLACK)

C10

C11

C12

C13

C14

C15

C16

C19

J72-0910-19 (B/2)

J72-0910-19 (A/2)

CHARGE

FAB 1

FAG

TMP

C30

PDT

DET

FWD

TH1

REV

ANT

Main DC

Back up battery

+B1

GND

+B2

C160

L20

C173

L19

D53

CN53

TKR-750

PC BOARD

TKR-750

FINAL UNIT (X45-373X-XX) 0-10 : K,E 0-11 : K2
Component side view (J72-0910-19)

FINAL UNIT (X45-373X-XX) 0-10 : K,E 0-11 : K2

Component side view (J72-0910-19)

Ref. No. Address

IC1

Ref. No. Address

D51

D52

D53

Component side

Foil side

Layer 1

Layer 2

Layer 3

Layer 4

Summary of Contents for TKR-750

Page 1: ...MODIFICATION 8 DISASSEMBLY FOR REPAIR 10 CIRCUIT DESCRIPTION 11 SEMICONDUCTOR DATA 18 COMPONENTS DESCRIPTION 20 PARTS LIST 22 EXPLODED VIEW 34 PACKING 36 ADJUSTMENT 37 CONTENTS TERMINAL FUNCTION 46 INTERCONNECTION DIAGRAM 50 PC BOARD FINAL UNIT X45 373X XX 52 DISPLAY UNIT X54 3330 21 56 TX RX UNIT X57 695X XX A 2 60 TX RX UNIT X57 695X XX B 2 64 RX VCO UNIT X58 4780 10 68 TX VCO UNIT X58 4790 10 6...

Page 2: ...ions are recommended for personal safety DO NOT transmit until all RF connectors are secure and any open connectors are properly terminated SHUT OFF this equipment when near electrical blasting caps or while in an explosive atmosphere This equipment should be serviced by only qualified tech nicians SERVICE This radio is designed for easy servicing Refer to the schematic diagrams printed circuit bo...

Page 3: ... displayed while in PC mode PG is displayed while in firmware programming mode 2 decimal points displayed 115 200bps 1 decimal point displayed 57 600bps No decimal 38 400bps E1 is displayed when FPU data is not written E2 is displayed when the channel data is not written E3 is displayed when PLL is unlocked Receiver PLL unlocked BUSY LED blinks Transmitter PLL unlocked TX LED blinks E4 is displaye...

Page 4: ... pro Use when changing the firmware program gramming mode of the flash memory 2 How to Enter Each Mode Mode Operation User mode Power on PC mode Received commands from PC Firmware Pro PF1 key Power on one second gramming mode 3 PC Mode 3 1 Preface The TKR 750 repeater is programmed by using a personal computer programming interface and KPG 91D software ver 2 0 or later 3 2 Connection Procedure 1 C...

Page 5: ...o external power supply connectors Main DC and Backup If an external DC power supply is connected to the main DC connector and a backup battery is connected to the Backup connector at the same time the DC power supply switches to the battery automatically if power failure occurs Therefore the operation of the repeater can be continued If the battery is used but both the battery and power sup ply n...

Page 6: ...ng tool Removing the jumper lead Fig 4 2 1 Insert the extracting tool J5800 002 into the connec tor while pushing the jumper lead in the direction of a 2 Push the extracting tool into collapse the barbs of the crimp terminal 3 Pull out the lead while continuing to push the extracting tool in the direction b 3 Reinsert the terminal with the black and white stripe lead into hole number 12 and the te...

Page 7: ...13 1801 04 and or G13 1802 04 to the top plate J21 8402 04 in order to adjust the space between the cabinet and the top plate Then insert the 3 tabs of the plate into the slots in the side of the cabinet High middle or low positions are available To afix the plate inset and tighten 2 screws on the other side of the plate You can also flip the top plate upside down to adjust a height of the cabinet...

Page 8: ...92 04 Spacers J02 0475 05 7 Installing Name Plates Punch out the name plate card Then insert the plates onto the reltative function keys You can reconfigure the name plates at any time Side view of the key Squeeze and insert the plates Name plates for the function keys Name plates Punch out the name plate cards MODIFICATION 1 DC Source Switch To prevent the power supply from turning off due to mis...

Page 9: ...CATION K1 R61 CN7 BACKUP ORANGE CHARGE Final unit A 2 Component side Fig 3 Strip off the insulation so that the cable can be soldered Cut off the coaxial cable at this point About 20mm About 8 10mm Fig 4 3 Single Antenna The TKR 750 can be used as a base station by sharing an external antenna connector for both transmitting and receiv ing data 3 1 Modification 1 Change the installation position of...

Page 10: ...s t on top and bottom You can remove the panel as sembly by pulling to front while you are pulling up the tabs Fig 5 CN16 CN18 TX RX unit A 2 Component side Route the coaxial cable under the lead wire extending from CN3 and CN16 Style the coaxial cable as illustrated in the figure Solder the coaxial cable CN3 E RX Final unit A 2 Component side 3 2 Connection 1 Solder the prepared coaxial cable to ...

Page 11: ...gnals and sends only the necessary signal to the first mixer DBM A1 2 2 First Mixer The signal from the BPF is heterodyned with the first local oscillator signal from the PLL frequency synthesizer circuit at the first mixer DBM A1 to become a 44 85MHz first inter mediate frequency IF signal The first IF signal is fed through two monolithic crystal filters XF2 Wide XF1 Nar row to further remove spu...

Page 12: ...ircuit The transmitter circuit consists of the following circuits 3 1 microphone circuit 3 2 modulation level adjustment circuit 3 3 driver and final power amplifier circuit 3 4 automatic power control circuit 3 5 RF power down detect and 3 6 fan action control circuit 3 1 Microphone Circuit The signal from the microphone is passed through AGC circuit located in display unit X54 333 so that it doe...

Page 13: ...IC6 located in the TX RX unit An APC voltage proportional to the difference between the sensed voltage and the reference voltage appears at the output of IC1 This output voltage controls the gate voltage for the drive ampli fier Q4 and final amplifier Q5 which keeps the transmitter output power constant 3 5 RF Power Down Detect When the transmitter output power has dropped to or be low the preset ...

Page 14: ...fier Q355 and high frequency amplifier Q302 The VCXO generates 16 8MHz The frequency stability is within 2 0ppm Temperature range of 30 to 60 C The frequency tuning and modulation of the VCXO are done to apply a voltage to pin 1 of the VCXO The output of the VCXO is applied to pin 8 of the PLL IC through the pin 7 of the VCO The VCO oscillator frequency is 136 000 to 174 000MHz Two VCOs cover the ...

Page 15: ...equency is shifted Shift on off can be set through programming 5 4 Shift Register Circuit Serial data is sent to the shift register IC502 to IC505 lo cated in display unit IC602 IC623 IC7 located in TX RX unit from the CPU IC604 to control various functions in the unit 5 5 Display Circuit The display circuit X54 333 contains two 7 segment LEDs D506 D507 orange D503 red transmission two color D504 ...

Page 16: ...he DSP operated at 3 3V 5 7 Base Band Circuit The base band circuit switches between the modulation signal to the transmitter circuit and remote audio and adjusts their levels This circuit consists of IC605 IC607 IC611 IC615 and IC617 Modulation inputs include local microphone input low speed data LSD high speed data HSD external audio in put TA and external data input TD and demodulation out puts...

Page 17: ...kle charging of 0 5A max can be performed from the Main DC power supply to the Battery The default is OFF See the Modification section for infor mation on the modification method The battery is charged from the Main DC with D8 D9 and R61 If it exceeds 0 5A the charging circuit is turned OFF by D9 6 2 SB Switching Relay Circuit 1 SB Switched B is supplied through the relay K1 in the TX RX unit A 2 ...

Page 18: ...CP O PLL IC clock 36 DP O PLL IC data 37 RDY I CPU ready input Pin No Name I O Function 38 ALE Not used 39 HOLD Not used 40 HLDA Not used 41 BCLK O Not used 42 RD O Flash ROM WR DSP HDS1 43 BHE Not used 44 WR O Flash ROM WR DSP HDS2 45 STB2 O Control shift register STB 46 INTx O DSP interrupt H Off L On 47 HCS O DSP HCS 48 CS0 O Flash ROM CS 49 A19 O Not used 50 59 A18 A9 O Flash ROM address bus 6...

Page 19: ...nc for receiver input LRCK 16 128kHz 44 BFSR1 I Frame sync for receiver input LRCK 16 128kHz Pin No Name I O Function 45 BDR0 I Serial data receive input 46 HCNTL1 I HPI control 1 47 BDR1 Not used No connection 48 BCLKX0 I Transmit clock input SCLK 516 09375kHz 49 BCLKX1 O Master clock output MCLK 4 12875MHz 50 Vss GND 51 HINT TOUT1 O Boot mode select Pull up 52 CVDD VDD for core CPU 1 8V 53 BFSX0...

Page 20: ... O HPI data bus 136 141 A14 A19 O Not used No connection 142 CVDD VDD for core CPU 1 8V 143 144 NC17 NC18 Not used No connection Final Unit X45 373X XX Ref No Part name Description IC1 IC DC amplifier IC2 IC Thermostat IC3 IC Voltage reguator Q2 3 Transistor RF amplifier Q4 FET TX drive amplifier Q5 FET Final amplifier Q8 9 Transistor DC switch D1 Diode Thermal sense D2 Zener diode Voltage referen...

Page 21: ...601 Transistor DC switch Q602 FET DC switch Q603 Transistor Inverter Ref No Part name Description Q604 FET DC switch Q605 Transistor Inverter Q606 Transistor AF mute switch Q607 609 Transistor DC switch Q610 FET DC switch Q611 612 Transistor DC switch Q613 614 Transistor Current control Q615 Transistor DC switch D1 4 Diode Wide Narrow switch D5 Diode Noise detection D7 Diode DC switch D8 Diode TX ...

Page 22: ...30 470 750 Tolerance More than 10pF Code C D G J K M X Z P No code 0 25 0 5 2 5 10 20 40 80 100 More than 10µF 10 50 20 20 0 Less than 4 7µF 10 75 Voltage rating 2nd word A B C D E F G H J K V 1st word 0 1 0 1 25 1 6 2 0 2 5 3 15 4 0 5 0 6 3 8 0 1 10 12 5 16 20 25 31 5 40 50 63 80 35 2 100 125 160 200 250 315 400 500 630 800 3 1000 1250 1600 2000 2500 2150 4000 5000 6300 8000 CHIP CAPACITORS EX C ...

Page 23: ...1B 2B G02 0576 14 FLAT SPRING 45 3B G02 0885 13 EARTH SPRING 51 1B G02 0894 04 EARTH SPRING FINAL FET 46 2B 3B G10 1263 04 FIBROUS SHEET CHASSIS 47 3C 2D G10 1264 04 FIBROUS SHEET PANEL 50 3B G10 1344 04 FIBROUS SHEET 58 3B G10 1345 04 FIBROUS SHEET 48 1F G13 1801 04 CUSHION ACCESSORY 49 1F G13 1802 04 CUSHION ACCESSORY 52 1E H25 0029 04 PROTECTION BAG 60 110 0 07 53 1F H25 0747 04 PROTECTION BAG ...

Page 24: ... TERMINAL F1 F53 0217 05 FUSE CN51 52 J13 0071 05 FUSE HOLDER L2 L40 4775 34 SMALL FIXED INDUCTOR 47NH L3 L40 6875 34 SMALL FIXED INDUCTOR 68NH L4 5 L34 4518 05 AIR CORE COIL L6 L34 4520 05 AIR CORE COIL L7 L34 4523 05 AIR CORE COIL L8 L34 4517 05 AIR CORE COIL K2 L8 L34 4518 05 AIR CORE COIL K E L9 11 L34 4520 05 AIR CORE COIL L12 L34 4523 05 AIR CORE COIL L16 L40 1575 92 SMALL FIXED INDUCTOR 15N...

Page 25: ... OHM J 1 16W R505 RK73GB1J683J CHIP R 68K J 1 16W R506 RK73GB1J103J CHIP R 10K J 1 16W R507 RK73GB1J682J CHIP R 6 8K J 1 16W R508 RK73GB1J102J CHIP R 1 0K J 1 16W R509 RK73GB1J103J CHIP R 10K J 1 16W R510 RK73GB1J224J CHIP R 220K J 1 16W R511 512 RK73GB1J103J CHIP R 10K J 1 16W R513 RK73GB1J104J CHIP R 100K J 1 16W R514 RK73GB1J154J CHIP R 150K J 1 16W R516 R92 2565 05 CHIP R 1 2K J 1 2W R517 R92 ...

Page 26: ...11 CC73GCH1H270J CHIP C 27PF J C113 CC73GCH1H150J CHIP C 15PF J C122 123 CK73GB1H103K CHIP C 0 010UF K C124 125 C92 1341 05 ELECTRO 100UF 16WV C126 127 C92 0633 05 CHIP TAN 22UF 10WV C128 129 CK73GB1H103K CHIP C 0 010UF K C134 135 CK73GB1H103K CHIP C 0 010UF K C136 139 C90 4016 05 ELECTRO 47UF 16WV C140 141 CK73GB1H103K CHIP C 0 010UF K C145 C92 0606 05 CHIP TAN 4 7UF 10WV C147 C92 0633 05 CHIP TA...

Page 27: ... J C769 771 C92 0560 05 CHIP TAN 10UF 6 3WV C772 C92 0823 05 CHIP TAN 100UF 10WV C773 C92 0514 05 CHIP TAN 2 2UF 10WV C774 CK73FB1C105K CHIP C 1 0UF K C775 779 C92 0519 05 CHIP TAN 1 0UF 25WV C780 782 CK73FB1C105K CHIP C 1 0UF K C783 CK73GB1H471K CHIP C 470PF K C784 CK73FB1C105K CHIP C 1 0UF K C785 786 CK73GB1C104K CHIP C 0 10UF K C787 CK73FB1C105K CHIP C 1 0UF K C788 CC73GCH1H101J CHIP C 100PF J ...

Page 28: ...J CHIP R 2 7K J 1 16W R3 RK73GB1J681J CHIP R 680 J 1 16W R4 RK73GB1J100J CHIP R 10 J 1 16W R5 RK73GB1J680J CHIP R 68 J 1 16W R6 RK73GB1J102J CHIP R 1 0K J 1 16W R7 RK73GB1J103J CHIP R 10K J 1 16W R8 RK73GB1J333J CHIP R 33K J 1 16W R9 RK73GB1J101J CHIP R 100 J 1 16W R10 RK73GB1J473J CHIP R 47K J 1 16W R11 RK73GB1J223J CHIP R 22K J 1 16W R13 RK73GB1J470J CHIP R 47 J 1 16W R14 15 RK73GB1J271J CHIP R ...

Page 29: ...1252 05 CHIP R 0 OHM J 1 16W R630 631 RK73GB1J473J CHIP R 47K J 1 16W R633 634 RK73GB1J473J CHIP R 47K J 1 16W R635 RK73GB1J102J CHIP R 1 0K J 1 16W R637 R92 1252 05 CHIP R 0 OHM J 1 16W R638 RK73GB1J102J CHIP R 1 0K J 1 16W R639 R92 1252 05 CHIP R 0 OHM J 1 16W R640 RK73GB1J102J CHIP R 1 0K J 1 16W R641 R92 1252 05 CHIP R 0 OHM J 1 16W R642 RK73GB1J102J CHIP R 1 0K J 1 16W R643 RK73GB1J473J CHIP ...

Page 30: ...GB1J473J CHIP R 47K J 1 16W R799 RK73GB1J102J CHIP R 1 0K J 1 16W R802 RK73FB2A2R2J CHIP R 2 2 J 1 10W R803 RK73GB1J473J CHIP R 47K J 1 16W R804 RK73GB1J102J CHIP R 1 0K J 1 16W R805 RK73GB1J473J CHIP R 47K J 1 16W R806 RK73GB1J102J CHIP R 1 0K J 1 16W R807 RK73GB1J473J CHIP R 47K J 1 16W R808 RK73GB1J102J CHIP R 1 0K J 1 16W R809 RK73GB1J473J CHIP R 47K J 1 16W R810 RK73GB1J102J CHIP R 1 0K J 1 1...

Page 31: ...1H102K CHIP C 1000PF K C308 310 CK73FB1E104K CHIP C 0 10UF K C311 C92 0001 05 CHIP TAN 0 1UF 35WV C312 CC73GCH1H150J CHIP C 15PF J C313 CC73GCH1H030C CHIP C 3 0PF C C314 CC73GCH1H270J CHIP C 27PF J C315 CK73FB1H473K CHIP C 0 047UF K C316 CC73GCH1H030C CHIP C 3 0PF C C317 CC73GCH1H150J CHIP C 15PF J C318 C92 0514 05 CHIP TAN 2 2UF 10WV C319 CK73GB1H102K CHIP C 1000PF K C320 C92 0514 05 CHIP TAN 2 2...

Page 32: ...GCH1H180G CHIP C 18PF G C356 CC73GCH1H270G CHIP C 27PF G C357 CK73GB1H102K CHIP C 1000PF K C360 361 CK73FB1C474K CHIP C 0 47UF K C362 CC73GCH1H220G CHIP C 22PF G C363 CC73GCH1H180G CHIP C 18PF G C364 365 CK73GB1H102K CHIP C 1000PF K C366 CC73GCH1H270G CHIP C 27PF G C367 CC73GCH1H180G CHIP C 18PF G C368 CC73GCH1H150G CHIP C 15PF G C369 CC73GCH1H090B CHIP C 9 0PF B C370 CC73GCH1H150G CHIP C 15PF G C...

Page 33: ... R 22K J 1 16W R373 RK73GB1J104J CHIP R 100K J 1 16W R374 RK73GB1J223J CHIP R 22K J 1 16W R375 RK73GB1J104J CHIP R 100K J 1 16W D350 353 1SV282 VARIABLE CAPACITANCE DIODE D354 355 1SV214 VARIABLE CAPACITANCE DIODE IC300 CD8468 MOS IC IC300 SA7025DK MOS IC Q300 301 2SC4116 GR TRANSISTOR Q302 2SC4215 Y TRANSISTOR Q350 351 2SK508NV K52 FET Q352 353 2SC4116 Y TRANSISTOR Q354 DTC114EUA DIGITAL TRANSIST...

Page 34: ...y A 2 Display B 2 50 58 A N09 2292 05 B M2 6 x 6 N30 2606 46 C M4 x 6 N30 4006 46 D M4 x 14 N30 4014 46 E M4 x 20 BLK N30 4020 45 F M3 x 6 F N32 3006 46 G M4 x 8 F BLK N32 4008 45 H M3 x 6 OC BLK N33 3006 45 J M3 x 6 Bi BLK N35 3006 45 K M4 x 6 Bi BLK N35 4006 45 L M3 x 8 N67 3008 46 M M2 6 x 8 BLK N80 2608 45 N M2 6 x 6 Br Tap N87 2606 46 O M3 x 5 Br Tap BLK N87 3005 45 P M3 x 6 Br Tap N87 3006 4...

Page 35: ... 12 12 28 33 30 31 14 1 19 47 4 41 37 35x2 36 16 21 15 47x2 Fx2 Kx14 Fx2 Nx2 Hx6 R R Bx2 Mx4 Ex4 Ax2 Bx2 F F 702 701 Dx3 Gx3 706 706 704 Final B 2 nal A 2 703 704 705 Parts with the exploded numbers larger than 700 are not supplied ...

Page 36: ...ion bag 709 Carton board 57 Item carton case H52 1621 02 17 DC cord E30 3427 15 54 Protection bag H25 0762 04 65 Handle K01 0418 15 18 TEST SPKR plug E31 3228 05 35 Fuse Blade 15A 32V F15 1537 05 52 Protection bag H25 0029 04 11 Instruction manual B62 1835 00 K K2 B62 1837 00 E 52 Protection bag H25 0029 04 59 Foot J02 0475 05 x 2 60 Foot J02 0492 04 x 2 62 Grommet J59 0302 05 x 2 C Pan head machi...

Page 37: ...ess 7 Ammeter 15A or more 8 AF Volt Meter Frequency Range 50Hz to 10kHz AF VTVM Voltage Range 3mV to 3V 9 Audio Generator AG Frequency Range 50Hz to 5kHz Output 0 to 1V 10 Distortion Meter Capability 3 or less at 1kHz Input Level 50mV to 10Vrms 11 Voltmeter Measuring Range 10 to 1 5V DC or less Input Impedance 50kΩ V or greater 12 4Ω Dummy Load Approx 4Ω 5W MIC connector Front panel view Test cabl...

Page 38: ...0 143 00 3 173 90 174 00 149 90 150 00 4 150 10 150 00 146 10 146 00 5 155 10 155 00 155 90 156 00 6 165 10 165 00 140 10 140 00 7 170 10 170 00 148 10 148 00 8 158 60 161 50 147 50 149 00 9 161 60 158 50 149 00 147 50 10 136 10 136 00 151 10 151 95 11 151 90 151 95 152 10 152 00 12 152 10 152 00 173 90 174 00 Test Signaling No Decode tone Encode tone 1 None None 2 None 100Hz square wave 3 QT 67 0...

Page 39: ...ect the unit to a suitable DC power supply 2 Write test 1 Turn the DC source switch on after connecting a PC and FPU cable to the radio E1 appears on LED display frequency 2 Write the test and shipping frequency to the radio Green BUSY LED lights up 3 End of test frequency writing 3 Setting 1 Connect the unit to a suitable DC power supply 2 Turn the power switch on after connecting a PC and FPU ca...

Page 40: ...nect the frequency f counter TX RX CN19 PC adj 50Hz or less frequency counter to CN19 then A 2 measure the frequency CH 2 10 TX 1 High CH Automatically PC adj 50Hz or less frequency 173 9975MHz tune 2 Low CH Automatically PC adj 136 0025MHz 11 Setting 1 Insert 8 pin cable and the coaxial cable to CN16 and CN19 on TX RX side 12 Maximum 1 Measure the RF power at Power meter Rear TX ANT Final VR1 Adj...

Page 41: ... to RX ANT SSG Rear RX ANT PC adj squelch CH 2 Wide Adjust to point of Wide SSG output 4dB below to Audio TEST SPKR closing squelch 12dB SINAD level analyzer jack SPO SSG MOD 1kHz VTVM pin 12 SSG DEV 3kHz Oscilloscope AF 2V 4Ω 2 SSG OFF Check Squelch must be closed Narrow 3 CH 2 Narrow PC adj SSG output 4dB below to Adjust to point of 12dB SINAD level closing squelch SSG MOD 1kHz SSG DEV 1 5kHz AF...

Page 42: ...asis OFF AG 1kHz 50mV Terminal load Transmission Narrow 2 A low CH TX VCO A low PC adj 0 1kHz A center CH VCO A center 2 05kHz A high CH TX VCO A high B low CH TX VCO B low B center CH VCO B center B high CH TX VCO B high Transmission Note After adjustment of the Max Deviation be sure to check the DQT balance 23 DQT 1 Low CH VCO A center MOD ANA Rear TX OUT PC adj Oscilloscope DC range balance Hig...

Page 43: ...Wide Deviation meter filter HPF OFF LPF 15kHz De emphasis OFF Transmission Narrow 2 VCO A CH TX VCO A center PC adj 0 05kHz VCO B CH TX VCO B center 1 5kHz Transmission 28 TA TX 1 Insert AG output into the MOD ANA Rear TX ANT PC adj 0 1kHz audio input control I O TA terminal pin 9 or 3 0kHz deviation VCO A CH TX VCO A center Deviation Wide VCO B CH TX VCO B center meter Deviation meter filter Osci...

Page 44: ...O B CH TX VCO B center 0 5kHz Transmission 32 Battery 1 VCO A CH TX VCO A center PC adj 0 1kHz warning tone VCO B CH TX VCO B center 3 0kHz deviation Deviation meter filter Wide HPF OFF LPF 15kHz De emphasis OFF Transmission Narrow 2 VCO A CH TX VCO A center PC adj 0 05kHz VCO B CH TX VCO B center 1 5kHz Transmission 33 Battery 1 VCO A CH TX VCO A center PC adj 0 05kHz operation VCO B CH TX VCO B ...

Page 45: ...pleted confirm the Repeater Desensitization as mentioned below 1 Disable the repeater mode 2 Adjust the level of the RF generator until 12dB SINAD is reached 3 Increase the output of the RF generator by 1dB This in creases the SINAD 4 Enable the repeater mode 5 Read the SINAD level It should not drop below 12dB SINAD If the SINAD is less then 12dB check the tight ness of the connectors and the tun...

Page 46: ...t RXD output 11 SOE I Output enable for shift register 12 PTT TXD I O PTT output TXD input Connector Terminal Terminal I O Terminal function No No Name 13 STB1 I Strobe data for shift register 14 CLK I Clock data input 15 DAT I Serial data input 16 PSW O Power switch output 17 GND Ground 18 NC No connection 19 SB I Power supply input after power switch 20 SB I Power supply input after power switch...

Page 47: ...O Power supply output after power switch To X54 2 SB O Power supply output after power switch B 2 3 GND Ground Connector Terminal Terminal I O Terminal function No No Name 4 NC No Connection display 5 DAT O Serial data output unit 6 PSW I Power switch input 7 STB1 O Strobe data for shift register 8 CLK O Clock data output 9 SOE O Output enable for shift register 10 TXD1 I O PTT input TXD output 11...

Page 48: ... IO4 I O Programable I O 4 9 RD O RX data output voice data 10 IO3 I O Programable I O 3 11 TA I TX audio input voice 12 IO2 I O Programable I O 2 13 TD I TX data input data or signaling Connector Terminal Terminal I O Terminal function No No Name 14 IO1 I O Programable I O 1 15 DG Control line ground 16 TXG TX signal ground 17 AI3 I Auxiliary input 3 FPU selectable 18 NC No connection 19 AI2 I Au...

Page 49: ... for RA RD ground only Connector Terminal Terminal I O Terminal function No No Name 13 SPM I Speaker mute signal input L Mute on 14 NC No connection 15 EMON I External monitor switch input L Monitor on H Monitor off 16 EPTT I External press to talk switch input L PTT on H PTT off 17 SC O Squelch control output L Busy H Not busy 18 NC No connection 19 TXG TX signal ground for TA TD ground only 20 A...

Page 50: ... AC BC3 BC1 BC4 BC2 RXI GND PTI NC PTO CLRC 14 1 RXD2 DG AI3 TD RD NC AI2 SPM AI1 RXG RA TXD2 TA AIO2 NC EMON TXG AIO1 AIO4 NC SC AIO6 AIO5 EPTT AIO3 SPG GND SB RD GND RSI SB AO1 SPO AO5 SPI AO3 AO2 AO4 DISPLAY UNIT B 2 X54 333 MIC SPG SPO CONTROL I O CN606 CN603 1 4 CN601 LDT RSSI EPR PSW GND MO SC LD2 TMP CK GND FWD DET SOE SB CP BUP NC SB EPT ASQ 8C DT NC LDR STB DP MB GND NC GND QS NC SB SB 8C...

Page 51: ...T TX ANT GND B2 B1 BACKUP BATTERY 2 ON 4 6 5 T 3 GND B1 B2 GND 1 FAB FAN CN5 CN4 CN3 CN1 1 8 CN6 CN8 CN7 CN15 1 3 CN16 CN18 CN19 E B B 3 1 NC BUP 8T TMP PC GND PDT FAS MAIN DC MAIN DC GND BACKUP 1 8 TEST SPKR 9 12 W3 W4 W5 W6 W7 W8 W2 W1 2 FAG B 8V AVR 8V AVR 9V AVR SUB UNIT RX VCO PLL X58 478 SUB UNIT TX VCO PLL X58 479 5V AVR 5V AVR INTERCONNECTION DIAGRAM ...

Page 52: ... ANT GND B2 B1 BACKUP BATTERY RXD2 DG AI3 TD RD NC AI2 SPM AI1 RXG RA TXD2 TA AIO2 NC EMON TXG AIO1 AIO4 NC SC AIO6 AIO5 EPTT AIO3 SPG GND SB RD GND RSI SB AO1 SPO AO5 SPI AO3 AO2 AO4 GND B1 B2 GND DISPLAY UNIT B 2 X54 333 1 FAB MIC FAN SPG SPO CN5 CN4 CN3 CN1 1 8 CN6 CN8 CN7 CN15 1 3 CN16 CN18 CN19 CONTROL I O E B B 3 1 NC BUP 8T TMP PC GND PDT FAS CN606 CN603 1 4 CN601 LDT RSSI EPR PSW GND MO SC...

Page 53: ... C143 R1 R6 R7 R8 R9 R48 R49 R50 R52 R53 R61 R64 CN1 TX IN CN4 CN5 CN6 MAIN DC RED CN7 BACKUP ORANGE GND B2 GND B1 CN8 GND BLACK C10 C11 C12 C13 C14 C15 C16 C19 J72 0910 19 B 2 CHARGE Vg FAB 1 2 FAG Q4 G D TM C30 Main DC Back up battery B1 GND B2 TKR 750 PC BOARD FINAL UNIT X45 373X XX 0 10 K E 0 11 K2 Component side view J72 0910 19 Ref No Address IC1 8K Q2 9H Q3 9F Q4 6I Ref No Address Q5 5L D2 ...

Page 54: ...26 R27 R28 R29 R30 R31 R32 R34 R35 R36 C165 R38 L17 R40 R41 R70 R45 VR1 C161 C162 C163 C164 C47 R57 R62 R63 CN3 ANT SW 1 8 GND NC 8T PC FAS PDT BUP TMP J72 0910 19 A 2 Vg TMP C30 PC 1 4 5 8 PDT 8T DET Q5 G D FWD TH1 REV ANT C160 L20 C173 L19 RX E D53 CN53 PC BOARD TKR 750 FINAL UNIT X45 373X XX 0 10 K E 0 11 K2 Component side view J72 0910 19 Component side Foil side Layer 1 Layer 2 Layer 3 Layer ...

Page 55: ...2 R52 C163 R53 C164 C47 R57 R61 R62 R63 R64 CN1 TX IN CN3 ANT SW 1 8 GND NC 8T PC FAS PDT BUP TMP CN4 CN5 CN6 MAIN DC RED CN7 BACKUP ORANGE GND B2 GND B1 CN8 GND BLACK C10 C11 C12 C13 C14 C15 C16 C19 J72 0910 19 B 2 J72 0910 19 A 2 CHARGE Vg Vg FAB 1 2 FAG Q4 G D TMP C30 PC 1 4 5 8 PDT 8T DET Q5 G D FWD TH1 REV ANT Main DC Back up battery B1 GND B2 C160 L20 C173 L19 RX E D53 CN53 TKR 750 PC BOARD ...

Page 56: ...0 C81 C82 C83 C84 C85 C86 IC2 Q8 1 3 4 5 D56 C174 D55 R73 C60 C155 R72 C145 C146 C171 C172 R60 C167 TKR 750 PC BOARD FINAL UNIT X45 373X XX 0 10 K E 0 11 K2 Foil side view J72 0910 19 Ref No Address IC2 7J IC3 9O Q8 8I Q9 7O Ref No Address D1 8L D6 8O D8 5O D9 6O Ref No Address D55 7A D56 6B ...

Page 57: ...D6 D8 D9 C107 C108 C109 C110 IC2 IC3 I G O Q9 R55 R56 1 3 4 5 GND B2 GND B1 Main DC Back up battery B1 GND B2 R60 C166 C167 C89 C170 C103 C168 C105 C169 PC BOARD TKR 750 FINAL UNIT X45 373X XX 0 10 K E 0 11 K2 Foil side view J72 0910 19 Component side Foil side Layer 1 Layer 2 Layer 3 Layer 4 ...

Page 58: ... GND B1 Main DC Back up battery B1 GND B2 D56 C174 D55 R73 C60 C155 R72 C145 C146 C171 C172 R60 C166 C167 C89 C170 C103 C168 C105 C169 TKR 750 PC BOARD PC BOARD TKR 750 FINAL UNIT X45 373X XX 0 10 K E 0 11 K2 Foil side view J72 0910 19 FINAL UNIT X45 373X XX 0 10 K E 0 11 K2 Foil side view J72 0910 19 Ref No Address IC2 7J IC3 9O Q8 8I Q9 7O Ref No Address D1 8L D6 8O D8 5O D9 6O Ref No Address D5...

Page 59: ... 3 4 5 6 7 8 9 10 11 12 13 14 VR601 Q512 J601 S501 PF1 S502 PF2 S503 PF3 S504 PF4 D503 TX IC504 J72 0756 12 B 2 NC MIC PTT SB NC GND MIG HK 1 3 4 6 1 8 1 TKR 750 PC BOARD DISPLAY UNIT X54 3330 21 Component side view J72 0756 12 ...

Page 60: ...BUSY D505 D506 D507 IC504 IC505 J72 0756 12 A 2 1 6 4 3 MAIN DC BACK UP GRN RED 1 8 9 16 1 8 9 16 DISPLAY UNIT X54 3330 21 Component side view J72 0756 12 PC BOARD TKR 750 Component side Foil side Layer 1 Layer 2 Ref No Address IC504 6J IC505 6L Q512 10A Q514 9P D503 7J D504 7M D505 5R D506 5J D507 5L ...

Page 61: ...06 D507 IC504 IC505 J72 0756 12 B 2 J72 0756 12 A 2 NC MIC PTT SB NC GND MIG HK 1 3 4 6 1 6 4 3 MAIN DC BACK UP GRN RED 1 8 9 16 1 8 9 16 TKR 750 PC BOARD DISPLAY UNIT X54 3330 21 Component side view J72 0756 12 DISPLAY UNIT X54 3330 21 Component side view J72 0756 12 PC BOARD TKR 750 Component side Foil side Layer 1 Layer 2 Ref No Address IC504 6J IC505 6L Q512 10A Q514 9P D503 7J D504 7M D505 5R...

Page 62: ...01 CP502 CP503 CP504 RED GRN BACKUP MAIN DC 1 3 4 6 1 1 3 3 4 4 6 6 D S G 1 1 3 3 4 4 6 1 3 4 6 1 3 4 6 6 1 3 4 6 1 3 4 6 1 3 4 6 1 3 4 6 RED GRN BUSY RED TX 1 4 VLI 5M GND NC SB NC GND PTT MIG MIC HK 11 1 J72 0756 12 A 2 TKR 750 PC BOARD Component side Foil side Layer 1 Layer 2 DISPLAY UNIT X54 3330 21 Foil side view J72 0756 12 Ref No Address IC501 9J IC502 7D IC503 9P IC506 8I IC507 8F Q501 9I ...

Page 63: ...HK D603 Q513 Q516 Q519 R509 R510 R511 R512 R513 R514 R516 CN502 R521 R522 R523 R524 R529 R530 R531 R532 R533 7 C508 C509 C510 C512 C513 C514 C515 1 2 20 SB NC PSW CLK PTT TXD HK RXD K3 K5 5C MIC SB GND DAT STB1 SOE K1 K2 K4 VLI MIG 19 IC501 1 8 9 16 IC503 1 3 4 6 1 3 4 6 RED GRN TX 1 4 5 8 1 3 4 6 J72 0756 12 B 2 PC BOARD TKR 750 DISPLAY UNIT X54 3330 21 Foil side view J72 0756 12 ...

Page 64: ... C521 C522 C523 C524 C525 VR501 C526 D501 D502 D508 D509 D510 D511 D512 D513 D514 IC501 IC502 1 8 9 16 1 8 9 16 IC503 IC506 O G I IC507 O G I CP501 CP502 CP503 CP504 RED GRN BACKUP MAIN DC 1 3 4 6 1 1 3 3 4 4 6 6 D S G 1 1 3 3 4 4 6 1 3 4 6 1 3 4 6 6 1 3 4 6 1 3 4 6 1 3 4 6 1 3 4 6 RED GRN BUSY RED GRN TX 1 4 5 8 1 3 4 6 VLI 5M GND NC SB NC GND PTT MIG MIC HK 11 1 J72 0756 12 B 2 J72 0756 12 A 2 T...

Page 65: ...NARROW Q4 R41 R44 R45 R46 C158 C159 R196 R197 R198 R50 C160 C161 R54 R57 R60 R61 R62 C172 R63 C173 1 35 2 36 NC NC ASQ SC CP EPT LDT CK FWD BUP TMP GND MO GND NC SB SB 8C DET GND RSSI DP EPR LDR DT STB LD2 PSW SOE MB GND QS SB SB NC 8C C174 R65 R69 R70 CN2 CN4 X1 1 2 IC10 I O G PSW SB 8CR MO WIDE NARROW A5 A6 A A4 FCT 9V TKR 750 PC BOARD TX RX UNIT X57 695X XX A 2 0 11 K 0 12 K2 2 70 E Component s...

Page 66: ...58 C159 C171 C174 CN1 CN2 CN3 A7 A8 9V A10 TP102 TX CV 8CT TP101 RX CV 8CR LDR EPR DP CP FCT CP CP EPT LDT A2 TX VCO X58 479 A3 RX VCO X58 478 GND2 VO FIN 5C LDR EPR DP CP REF GND1 SRR 8CL CV 9CL NC GND2 VO FIN 5C LDT EPT DP CP REF GND1 STT 8CL CV 9CL MO J72 0923 19 A 2 TX RX UNIT X57 695X XX A 2 0 11 K 0 12 K2 2 70 E Component side view J72 0923 19 A 2 PC BOARD TKR 750 Component side Foil side La...

Page 67: ... 1 35 2 36 NC NC ASQ SC CP EPT LDT CK FWD BUP TMP GND MO GND NC SB SB 8C DET GND RSSI DP EPR LDR DT STB LD2 PSW SOE MB GND QS SB SB NC 8C C174 R65 R69 R70 CN1 CN2 CN3 CN4 X1 1 2 IC10 I O G PSW SB 8CR MO WIDE NARROW A5 A6 A7 A8 A4 FCT 9V A10 TP102 TX CV 8CT TP101 RX CV 8CR LDR EPR DP CP FCT CP CP EPT LDT A2 TX VCO X58 479 A3 RX VCO X58 478 GND2 VO FIN 5C LDR EPR DP CP REF GND1 SRR 8CL CV 9CL NC GND...

Page 68: ...2 C133 C134 C135 Q2 B Q8 Q9 B C E C140 C141 C142 R33 C143 R34 R35 C145 R36 C146 R37 R3 C148 R3 C149 R6 R9 C150 C152 C164 C166 C167 C175 C176 C177 C178 C179 R73 R74 R75 R76 R77 R78 R79 C191 R82 C192 C193 C194 C195 R87 R88 R90 R91 R92 R93 R94 R95 R96 X2 R97 X3 R98 R99 C16 C17 C18 C19 IC11 O G I GND2 VO FIN 5C LDT EPT DP CP REF GND1 STT 8CL CV 9CL MO 1 4 5 8 GND2 VO FIN 5C LDR EPR DP CP REF GND1 SRR ...

Page 69: ...12 L13 L21 L23 R150 IC6 1 1 8 8 16 16 9 9 IC7 L33 R11 R161 R162 R163 R164 R165 R166 L43 Q1 E C B Q2 B C E Q3 Q5 R176 Q6 Q7 R34 R1 R35 R36 R3 R37 R4 R38 R5 R39 R7 R8 R40 C151 R42 R43 C153 C154 C155 C156 R47 C157 R48 R49 R51 R52 C162 R53 C163 R55 R56 R58 R66 R67 R68 R71 R72 C184 C185 C189 C190 R83 C197 C198 C199 C10 C11 C12 C13 C14 C15 6 TX RX UNIT X57 695X XX A 2 0 11 K 0 12 K2 2 70 E Foil side vie...

Page 70: ... C B C135 Q2 B C E Q3 Q5 R176 Q6 Q7 Q8 Q9 B C E C140 C141 C142 R33 C143 R34 R1 R35 C145 R36 C146 R3 R37 R4 R38 C148 R5 R39 C149 R6 R7 R8 R9 R40 C150 C151 R42 C152 R43 C153 C154 C155 C156 R47 C157 R48 R49 R51 R52 C162 R53 C163 C164 R55 R56 C166 C167 R58 C175 R66 C176 R67 C177 R68 C178 C179 R71 R72 R73 R74 C184 R75 C185 R76 R77 R78 R79 C189 C190 C191 R82 C192 C193 R83 C194 C195 R87 C197 R88 C198 C19...

Page 71: ...AT GND SB 1 2 Q612 L601 L604 L606 L C780 C781 C785 C786 5 TONE 3 3D TMS TD1 DVDD TD0 TCK TCK EMU0 TRST GND NC GND GND GND EMU1 1 J72 0923 19 B 2 TKR 750 PC BOARD Ref No Address IC601 6A IC602 7K IC605 6K IC607 8O IC623 8K IC624 4G IC625 4K IC627 4A Ref No Address IC628 3G IC629 4R IC630 4N Q607 8L Q608 9L Q612 5B Q613 8M Q614 9M Ref No Address D600 4B D614 6M D618 6M D621 7M D626 4M D629 6N TX RX ...

Page 72: ...4 5 8 30 NC NC NC EMON EPTT 5C NC TXG IO1 IO2 IO3 IO4 IO5 IO6 NC 29 NC NC RXD2 TXD2 AI1 AI2 AI3 DG TD TA RD RA RXG SPM NC 2 1 D629 CP600 CP601 IC623 1 1 1 8 8 8 9 9 9 16 16 16 IC625 O I G IC630 G O I R742 R749 R750 R751 R752 R760 R764 R765 R766 R768 R771 R781 R785 R789 R793 1 1 SPO SPG 2 12 Q607 TXO TXI RXO AC BC1 BC2 BC3 BC4 PTI CLRC RXI PTO NC GND Q608 C760 C762 C765 C767 Q613 Q614 C770 C772 C77...

Page 73: ...G I IC630 G O I R742 R749 R750 R751 R752 R760 R764 R765 R766 R768 R771 R781 R785 R789 R793 1 1 SPO SPG 2 12 Q607 TXO TXI RXO AC BC1 BC2 BC3 BC4 PTI CLRC RXI PTO NC GND Q608 C760 C762 C765 C766 C767 C769 20 MIC 5C K5 K3 HK RXD1 PTT TXD1 CLK PSW NC SB 19 MIG VLI K4 K2 K1 SOE STB1 DAT GND SB 1 2 Q612 Q613 Q614 L601 C770 L604 C772 L606 C773 L607 C774 L608 L611 L612 L613 C780 C781 C785 C786 C788 C789 C...

Page 74: ...21 C722 C723 C724 C725 R762 C726 C852 R763 C728 C729 R767 C730 R772 C736 R773 R774 R775 C739 R776 R777 R778 R779 C740 C743 R780 C744 R782 C746 R783 R786 R787 R790 R791 R794 C758 R795 Q6 R798 R799 Q605 Q606 C761 Q609 C763 C764 C768 Q610 1 8C NC SB SB QS GND MB SOE PSW LD2 STB DT LDR EPR DP RSSI GND DET 8C SB SB NC GND MO GND TMP BUP FWD CK LDT EPT CP SC ASQ NC NC 35 36 2 G S D Q611 Q615 C771 L605 C...

Page 75: ...76 1 4 5 8 4 5 8 IC603 1 12 13 24 IC604 IC606 IC609 C693 IC613 1 16 C694 C695 C696 IC618 1 144 CP603 CP604 CP605 CP606 CP607 CP608 CP609 CP610 IC631 CP611 IC632 1 4 5 8 CP612 CP613 CP614 CP615 CP616 CP617 CP618 CP619 CP620 R700 R701 R702 R703 R704 R705 R720 R723 R724 R726 R727 R730 R731 R733 R734 C707 C708 C709 C710 C711 C712 C713 C714 C716 C717 C718 C719 C727 C731 C732 C733 C734 C735 C737 C738 C7...

Page 76: ...R728 R729 R730 R731 R732 R733 R734 R735 R736 R737 R738 R739 C700 C701 C703 TH700 R740 C704 TH701 R741 C705 C706 R743 C707 R744 C708 R745 C709 R747 C710 C711 C712 C713 C714 C715 C716 R753 C717 R754 C718 C719 R758 C720 C721 C722 C723 C724 C725 R762 C726 C852 R763 C727 C728 C729 R767 C730 C731 C732 C733 C734 C735 R772 C736 R773 C737 R774 C738 R775 C739 R776 R777 R778 R779 C740 C741 C742 C743 R780 C74...

Page 77: ...56 C357 C358 C359 C360 C361 C362 C363 C364 C365 C366 C367 C368 TC350 C369 TC351 C370 C371 C372 C373 C374 C375 C377 C378 C379 IC300 1 10 11 20 C383 D350 D351 D352 D353 G S D G S D CN350 CN300 GND SRR 8CL CV 9CL NC FIN 5C LDR EPR DT CP REF 1 7 6 1 CN350 CN300 NC 9CL CV 8CL SRR GND REF CP DT EPR LDR 5C FIN 7 1 1 6 J72 0749 02 A 2 J72 0749 02 A 2 J72 0749 02 B 2 J72 0749 02 B 2 TKR 750 PC BOARD RX VCO...

Page 78: ... C360 C361 C362 C363 C364 C365 C366 C367 C368 TC350 C369 TC351 C370 C371 C372 C373 C374 C375 C377 C378 C379 C382 C383 D350 D351 D352 D353 CN351 GND VO 2 1 CN350 CN300 GND STT 8CL CV 9CL MO FIN 5C LDR EPT DT CP REF 1 7 6 1 VO GND 1 2 CN351 G S D G S D CN350 CN300 MO 9CL CV 8CL STT GND REF CP DT EPT LDR 5C FIN 7 1 1 6 IC300 1 10 11 20 J72 0750 12 A 2 J72 0750 12 A 2 J72 0750 12 B 2 J72 0750 12 B 2 P...

Page 79: ...356 R24 Q2 R11 4 7k R50 2 2k R6 22 R17 150k R8 10 2 COM 3 IN 1 OUT C12 1000p R9 56 C98 1000p R53 1k C16 1000p C21 22p C85 1000p C2 1000p C1 1000p C10 1000p C84 1000p R52 1k C96 18p C80 1000p C143 33p R14 180 R16 180 L4 22n L5 22n 1 GND1 2 GND2 3 HYST 4 VCC 5 ToVER R60 0 R32 100k C53 0 047u FINAL UNIT X45 3730 XX A 2 X45 3730 XX 11 10 Q2 3 RF AMP FAG THERMAL SENSE FAB DC SWITCH 146 173MHz 136 150MH...

Page 80: ...R34 0 R61 5 6 C162 27p PD55003S Q4 C31 27p C47 C164 82p C70 9p CN5 1 E 2 B 3 B C165 1000p L16 15n R70 120 R71 0 L17 18n C166 22p C167 100p C146 100p C145 22p C160 1000p L19 9 5T D53 MA4PH633 L20 5T C60 1000p C173 R73 0 C174 27p R72 120 C155 1000p C89 100p C170 22p C172 100p C171 22p C103 100p C168 22p C169 22p C105 100p K1 B1 SURGE PROTECTOR B2 CURRENT PROTECTOR GND BACK UP BATTERY REVERSE CURRENT...

Page 81: ...62 27p R52 1k C96 18p C80 1000p C143 33p R14 180 R16 180 L4 22n L5 22n PD55003S Q4 C31 27p C47 C164 82p C70 9p CN5 1 E 2 B 3 B 1 GND1 2 GND2 3 HYST 4 VCC 5 ToVER R60 0 R32 100k C53 0 047u C165 1000p L16 15n R70 120 R71 0 L17 18n C166 22p C167 100p C146 100p C145 22p C160 1000p L19 9 5T D53 MA4PH633 L20 5T C60 1000p C173 R73 0 C174 27p R72 120 C155 1000p C89 100p C170 22p C172 100p C171 22p C103 10...

Page 82: ...2W C519 0 01u C511 0 01u C512 0 01u VR601 10k CN601 1 2 3 4 5 6 7 8 9 10 11 CN501 1 2 3 4 5 6 7 8 9 10 11 D601 DA204U D602 DA204U D506 LA 501DD 1 10 6 5 C501 10u10 R502 0 R534 1k R535 1k R536 1k R537 1k R538 1k R539 1k R540 1k D512 DA204U D513 DA204U D514 DA204U C607 0 1u 2SK1824 Q525 R606 47k KEY5 KEY1 KEY3 KEY2 KEY2 KEY3 KEY1 KEY4 PF6 PF5 PF4 PF3 PF2 PF1 DISPLAY UNIT X54 3330 21 A 2 7SEGMENT DC ...

Page 83: ... Q510 DTA114EUA R505 68k VR501 10k CN502 MIG MIC VLI 5C K4 K5 K2 K3 K1 HK RXD SOE PTT TXD STB1 CLK DAT PSW GND NC SB SB D503 B30 2151 05 D504 B30 2151 05 2SA1586 Y GR Q502 S507 R516 1 2k 1 2W D507 LA 501DD 1 10 5 6 R541 10k R542 10k R543 10k R544 10k R518 1 2k 1 2W KEY5 KEY1 KEY2 KEY4 KEY3 CALL TX BACKUP MAIN DC MIC AMP LEVEL CONTROLLER AF DETECTOR 7SEGMENT DC SW CLK SOE BUSYC SHIFT REGISTER DC SW...

Page 84: ...TXD STB1 CLK DAT PSW GND NC SB SB VR601 10k D503 B30 2151 05 D504 B30 2151 05 2SA1586 Y GR Q502 CN601 1 2 3 4 5 6 7 8 9 10 11 CN501 1 2 3 4 5 6 7 8 9 10 11 S507 D601 DA204U D602 DA204U R516 1 2k 1 2W D506 LA 501DD 1 10 6 5 D507 LA 501DD 1 10 5 6 C501 10u10 R502 0 R534 1k R535 1k R536 1k R537 1k R538 1k R539 1k R540 1k D512 DA204U D513 DA204U D514 DA204U R541 10k R542 10k R543 10k R544 10k C607 0 1...

Page 85: ... 50n LDT R352 0 C311 0 1u35 DP R350 0 R371 10k C383 1000p STT 7 8 R318 0 C368 15p R358 47 R365 47k R304 100 C382 1000p R303 100 C80 10u10 L27 C103 10p C102 10p C82 0 01u C89 0 01u X3 16 8MHz 1 VC 2 GND 3 OUT 4 VDC 5CT R74 22 R21 680k R79 100k R18 470k C25 10u10 R82 470k R20 820k IC1 NJM2904E 1 AOUT 2 A IN 3 A IN 4 V 5 6 7 8 R78 47k FCT 8CT R19 220k C179 0 01u C24 10u10 L306 L301 39n C307 1000p C31...

Page 86: ...C379 10p C363 47p C364 1000p R305 0 C359 8p L350 10u SRR C369 15p R75 22 C83 0 01u C81 10u10 5CR R76 100k R73 470k R77 47k FCR 8CR C84 0 01u IC2 NJM4558E 1 AOUT 2 A IN 3 A IN 4 V 5 6 7 8 X2 16 8MHz 1 VC 2 GND 3 OUT 4 VDC C105 10p C104 10p L28 10u IC300 SA7025DK 1 2 3 4 5 6 7 8 9 10 11 PHA 12 VSSA 13 PHI 14 PHP 15 VDDA 16 RN 17 RF 18 LOCK 19 TEST 20 VDD L301 39n R315 330 R321 22k C321 47p R322 10k ...

Page 87: ... 10p R91 4 7k C141 0 01u L33 10u L30 33n C107 15p R120 1 5k L16 L34 4527 05 R129 47k C177 1000p C126 22u10 R109 100 2 COM 3 IN 1 OUT R40 27 R99 100 R15 270 L25 56n C167 1000p C30 68p L9 56n C23 18p C9 1000p 2 COM 3 IN 1 OUT L8 22n R31 5 6 C154 10u6 3 F1 C127 22u10 C209 0 01u C106 1000p R41 2 2k C31 330p R34 1k C140 0 01u R46 2 2k R100 22 C99 1000p 9CLR C172 1000p Q23 DTC114EUA R5 68 C149 0 01u R36...

Page 88: ...MP C64 0 1u CP FCT C71 0 01u C54 0 01u R164 270 Q25 DTC114EUA L23 1u R161 470 R56 6 8k C59 15p D3 DAN235K EPR C210 0 01u C66 330p 8CR C57 0 01u R54 1k R67 56 EPT R139 0 L24 L34 4459 05 Q27 DTC144EUA R197 1 8k R198 0 CN14 E40 6009 05 1 2 3 4 5 6 7 8 9 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 R71 82k R72 330k C79 0 22u D13 MA742 R176 47k C218 0 01u L43 C78 0 1...

Page 89: ...C311 0 1u35 DP R367 220 C140 0 01u R88 1k R46 2 2k C366 18p L353 10u R161 470 R100 22 8CLR R56 6 8k C99 1000p C59 15p D3 DAN235K R350 0 C379 10p C363 47p 9CLR C172 1000p EPR C210 0 01u C66 330p Q23 DTC114EUA R5 68 R371 10k C383 1000p STT 8CR C149 0 01u C364 1000p R36 1k R305 0 C359 8p 7 8 C128 0 01u R318 0 L350 10u C57 0 01u C98 1000p R13 47 C368 15p 5CR R358 47 R54 1k 9CLT C171 1000p R365 47k R12...

Page 90: ...01u R613 0 DAT CN600 E40 6102 05 1 20 CN602 E40 6009 05 1 36 CN601 E40 5701 05 1 14 1 A0 2 A1 3 A2 4 GND 5 6 7 8 STB SC STB CLK AM SOE AMPSW BUP TMP SHIFT REGISTER TX RX UNIT X57 695X XX B 2 EEP ROM VOLTAGE DETECTOR SURGE PROTECTOR DC SW DC SW D600 DA204U DISPLAY UNIT X54 3330 21 A 2 CN502 SB SB GND NC DAT PSW STB1 CLK SOE PTT TXD1 K1 HK RXD1 K2 K3 K4 K5 VLI 5C MIG MIC X57 695X XX A 2 CN14 TX RX U...

Page 91: ...00 2 R817 100 R836 47k Q612 DTC144EUA R622 1k R837 3 3k C851 0 1u R834 3 3k STB 1 IO5 IO4 5TONE IO2 IO1 BYTE CNVss ENT ENR RESET Xout Vss Xin Vcc NMI BUP TMP INT0 CLK DAT SFT LD1 IO3 BEEP 25 LD2 26 RS EPTT PTT TXD1 RXD1 SCLK SDAT TXD0 RXD0 CP DP RDY ALE HOLD HLDA BCLK RD BHE WR STB INTx HCS CS0 A19 50 A18 51 75 76 100 EPTT C843 0 1u C844 0 1u TMP IO3 DC SW TXO DATA 5C MO RXI MIC DEI MB GND RXO TXI...

Page 92: ...SS12 77 CLKMD1 78 CLKMD2 79 CLKMD3 80 NC13 81 HD2 82 TOUT0 83 EMU0 84 EMU1 OFF 85 TDO 86 TDI 87 TRST 88 TCK 89 TMS 90 NC14 91 CVDD5 92 HPIENA 93 VSS13 94 CLKOUT 95 HD3 96 X1 97 X2 CLKIN 98 RS 99 D0 100 D1 101 D2 102 D3 103 D4 104 D5 105 A16 106 VSS14 107 A17 108 A18 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 1...

Page 93: ...8u6 3 LRCK R736 47k C775 1u25 R741 150k 1 Y1 Y0 Z1 Z Z0 INH VEE 8 VSS 9 16 R732 47k C728 0 01u SDTI R745 47k C721 10u10 1 VSS 2 VIN 3 VOUT C648 0 01u C780 1u C724 1800p R684 47k R682 15k C649 33p C723 1u C652 100p R671 22k 1 VCOM AINR AINL VSS VDD DEMO DEM1 8 SDTO 9 16 C806 47u25 R714 22k R676 82k C698 10u10 C690 100p 2 COM 3 IN 1 OUT C679 10u10 R737 47k R722 330k DAT C763 1000p C730 0 01u C823 47...

Page 94: ... Q5 OE 16 VDD AI2 EMON R807 47k AI1 R768 1 2k R781 470 R749 0 R799 1k C799 1000p C816 1000p SC C788 100p D629 DA204U R776 1k CN603 E40 5887 05 1 SB SB GND 4 GND C819 1000p C808 1000p C791 470p R804 1k R762 4 7k DAT IC629 LA4422 1 VCC 2 IN 3 NC1 4 DC 5 NFA 6 NFB 7 BS 8 GND 9 NC2 10 OUT D628 1SS355 R790 47k SPM CLK D610 DA204U R771 1 2k R778 1k R793 1k L608 C805 1000p RSSI R760 1 2k C783 470p C773 2...

Page 95: ...LKX1 50 VSS7 51 HINT TOUT1 52 CVDD3 53 BFSX0 54 BFSX1 55 HRDY 56 DVDD3 57 VSS8 58 HD0 59 BDX0 60 BDX1 61 IACK 62 HBIL 63 NMI 64 INT0 65 INT1 66 INT2 67 INT3 68 CVDD4 69 HD1 70 VSS9 71 NC9 72 NC10 73 74 75 DVDD4 76 VSS12 77 CLKMD1 78 CLKMD2 79 CLKMD3 80 NC13 81 HD2 82 TOUT0 83 EMU0 84 EMU1 OFF 85 TDO 86 TDI 87 TRST 88 TCK 89 TMS 90 NC14 91 CVDD5 92 HPIENA 93 VSS13 94 CLKOUT 95 HD3 96 X1 97 X2 CLKIN...

Page 96: ...t Reg 2 IC504 BU4094BCFV Shift Reg 1 IC503 BU4094BCFV SW SW SW Q510 Q511 DTA114EUA x 5 SW SW SW Q508 AMP ATT DET D501 502 HSM88AS VR501 IC501 NJM4558E Q501 2SC4116 Y Q502 2SA1586 Y GR MIC Q516 519 UPA627T Q521 524 UPA627T KEY1 5 S501 S502 S503 S504 S505 PF1 5 Q512 514 UPA627T D506 D507 S507 Power source SW Main DC Back UP BUSY CALL TX D505 D504 D503 VLI PSW DAT SO SI SI SO SO SI CLK SOE STB1 CLK S...

Page 97: ...EUA DIVIDER IC613 TC74VHC4040FT XF SW SFT Q604 2SK1824 X601 16 515M Interface IC603 606 TC74LVX4245FS LD1 DAT CLK CPU IC604 M30622M4 FLASH ROM IC609 AT29C020 90TI Reset IC IC601 RH5VL42C A0 A18 D0 D7 WR RD CS0 WR HCS D0 D7 A0 D3 EEPROM IC600 AT2408N10S12 5 SCLK SDAT SOE STB1 CLK DAT KEY1 5 VLI TXD1 RXD1 PTT EPTT EMON AI1 3 TXD0 RXD0 IO1 6 SFT SW Q600 2SK1824 X600 14 754M SCLK LRCLK ASQ RSSI FWD BA...

Page 98: ... 2SC4116 GR IC7 BU4094 BCFV D5 MA742 Q7 2SC4617 S SW SW D4 DAN235K D3 DAN235K Q4 DTC144EUA FM IC IC9 TK14489V 2 TXD2 CN602 MO MB P CP EPT T CK SOE PSW SB CN606 SW BUP K1 SW Final AMP Q5 RD70HVF1 01 FAS Q9 DTD123EK CN6 CN7 CN4 TX ANT FAB BACKUP DC AMP REF AMP PC FWD DET REV DET IC1 TA75W01FU 15A 15A Main DC CN1 CN3 B Vcont TEMP Final unit X45 373 A 2 X45 373 B 2 TX RX unit X57 695 A 2 DET 8C 8C EMP...

Page 99: ... power is tuned off 2 When using the external speaker remove the jumper lead from the connector and attach the speaker cable 3 When not using the external speaker replace the jumper lead and insert the connector into the speaker jack pin9 and 12 Specifications Maximum input power 40W Impedance 4Ω Dimensions W x H x D 129 x 129 x 77 mm projection not included 5 1 16 x 5 1 16 x 3 inches Weight 820g ...

Page 100: ... 140 F Dimensions 483 19 W x 88 3 1 2 H x 340 13 1 3 D mm inch Weight 9 7kg 21 4 lbs RECEIVER Measured by TIA EIA 603 Sensitivity 12dB SINAD 0 35µV 116dBm 20dB Quieting 0 45µV 114dBm Selectivity Wide 85dB 30kHz 25kHz Narrow 80dB 15kHz 77dB 12 5kHz Intermodulation Wide 80dB 30kHz 60kHz Narrow 75dB 15kHz 30kHz Hum and Noise Wide 50dB Narrow 45dB Spurious Image Rejection 90dB Audio Output Ext Speaker...

Page 101: ...kHz Spurious Emission 36dBm 1GHz 30dBm 1GHz FM Noise EIA 25kHz 50dB 12 5kHz 45dB Modulation Distortion Less than 3 at 1000Hz Microphone Impedance 600Ω Band Spread 28MHz KENWOOD CORPORATION 2967 3 Ishikawa machi Hachioji shi Tokyo 192 8525 Japan KENWOOD U S A CORPORATION P O BOX 22745 2201 East Dominguez Street Long Beach CA 90801 5745 U S A KENWOOD ELECTRONICS CANADA INC 6070 Kestrel Road Mississa...

Search results

Summary of Contents for TKR-750

Reviews:

Related manuals for TKR-750

Brands by name

Popular brands

Kenwood TKR-750, Service Manual

Search results

Summary of Contents for TKR-750

Reviews:

Related manuals for TKR-750

Brands by name

Popular brands