Kenwood TK-7108H Service Manual Download Page 25

Page: 25 / 43

TK-7108H

PARTS LIST

Ref. No.

Address

Parts No.

Description

Desti-

nation

New

parts

Ref. No.

Address

Parts No.

Description

Desti-

nation

New

parts

TX-RX UNIT (X57-6700-24)

R279

RK73GB1J472J

CHIP R

4.7K

1/16W

R280

RK73GB1J391J

CHIP R

390

1/16W

R281

R92-0670-05

CHIP R

0 OHM

R301,302

RK73GB1J472J

CHIP R

4.7K

1/16W

R303

RK73GB1J223J

CHIP R

22K

1/16W

R304

RK73GB1J472J

CHIP R

4.7K

1/16W

R305

RK73GB1J182J

CHIP R

1.8K

1/16W

R306

RK73GB1J274J

CHIP R

270K

1/16W

R308

RK73GB1J334J

CHIP R

330K

1/16W

R309

RK73GB1J332J

CHIP R

3.3K

1/16W

R310

RK73GB1J102J

CHIP R

1.0K

1/16W

R311

RK73GB1J333J

CHIP R

33K

1/16W

R312

RK73GB1J473J

CHIP R

47K

1/16W

R313

RK73GB1J104J

CHIP R

100K

1/16W

R314

RK73GB1J222J

CHIP R

2.2K

1/16W

R315

RK73GB1J183J

CHIP R

18K

1/16W

R316

RK73GB1J223J

CHIP R

22K

1/16W

R317-320

RK73GB1J103J

CHIP R

10K

1/16W

R321

RK73GB1J223J

CHIP R

22K

1/16W

R322

RK73GB1J101J

CHIP R

100

1/16W

R323

RK73GB1J224J

CHIP R

220K

1/16W

R324

R92-1252-05

CHIP R

0 OHM J

1/16W

R325

RK73GB1J333J

CHIP R

33K

1/16W

R349

RK73GB1J473J

CHIP R

47K

1/16W

R350

RK73GB1J273J

CHIP R

27K

1/16W

R351

RK73GB1J471J

CHIP R

470

1/16W

R352

RK73GB1J101J

CHIP R

100

1/16W

R353

RK73GB1J104J

CHIP R

100K

1/16W

R354

RK73GB1J331J

CHIP R

330

1/16W

R355

RK73GB1J471J

CHIP R

470

1/16W

R356

RK73GB1J102J

CHIP R

1.0K

1/16W

R358

RK73GB1J470J

CHIP R

1/16W

R359

RK73GB1J224J

CHIP R

220K

1/16W

R360

RK73GB1J474J

CHIP R

470K

1/16W

R361

RK73GB1J470J

CHIP R

1/16W

R362

RK73GB1J474J

CHIP R

470K

1/16W

R363

RK73GB1J154J

CHIP R

150K

1/16W

R364

R92-1252-05

CHIP R

0 OHM J

1/16W

R365

RK73GB1J104J

CHIP R

100K

1/16W

R366

RK73GB1J471J

CHIP R

470

1/16W

R367

RK73GB1J470J

CHIP R

1/16W

R368

RK73GB1J104J

CHIP R

100K

1/16W

R369

R92-1252-05

CHIP R

0 OHM J

1/16W

R370

RK73GB1J151J

CHIP R

150

1/16W

R371

RK73GB1J474J

CHIP R

470K

1/16W

R372

RK73GB1J224J

CHIP R

220K

1/16W

R373

RK73GB1J684J

CHIP R

680K

1/16W

R374

RK73GB1J184J

CHIP R

180K

1/16W

R375,376

RK73GB1J104J

CHIP R

100K

1/16W

R378

R92-1252-05

CHIP R

0 OHM J

1/16W

R379

RK73GB1J104J

CHIP R

100K

1/16W

R401-403

RK73GB1J102J

CHIP R

1.0K

1/16W

R404

RK73GB1J103J

CHIP R

10K

1/16W

R405

R92-1252-05

CHIP R

0 OHM J

1/16W

R407

RK73GB1J152J

CHIP R

1.5K

1/16W

R408

RK73GB1J100J

CHIP R

1/16W

R409

RK73GB1J104J

CHIP R

100K

1/16W

R410

RK73GB1J822J

CHIP R

8.2K

1/16W

R411

RK73GB1J562J

CHIP R

5.6K

1/16W

R412,413

RK73GB1J103J

CHIP R

10K

1/16W

R414

RK73GB1J471J

CHIP R

470

1/16W

R415

R92-1252-05

CHIP R

0 OHM J

1/16W

R416

RK73GB1J471J

CHIP R

470

1/16W

R417

RK73GB1J224J

CHIP R

220K

1/16W

R418,419

RK73GB1J102J

CHIP R

1.0K

1/16W

R420

RK73GB1J272J

CHIP R

2.7K

1/16W

R421

RK73GB1J152J

CHIP R

1.5K

1/16W

R422

RK73GB1J103J

CHIP R

10K

1/16W

R423,424

RK73GB1J221J

CHIP R

220

1/16W

R425,426

RK73GB1J473J

CHIP R

47K

1/16W

R427

RK73GB1J104J

CHIP R

100K

1/16W

R428

RK73GB1J473J

CHIP R

47K

1/16W

R429,430

RK73GB1J101J

CHIP R

100

1/16W

R431

RK73GB1J104J

CHIP R

100K

1/16W

R432

RK73GB1J102J

CHIP R

1.0K

1/16W

R433

RK73GB1J472J

CHIP R

4.7K

1/16W

R434

R92-1252-05

CHIP R

0 OHM J

1/16W

R435

RK73GB1J101J

CHIP R

100

1/16W

R436

RK73GB1J124J

CHIP R

120K

1/16W

R437

RK73GB1J102J

CHIP R

1.0K

1/16W

R438

RK73GB1J223J

CHIP R

22K

1/16W

R439

RK73GB1J473J

CHIP R

47K

1/16W

R440-442

RK73GB1J101J

CHIP R

100

1/16W

R443

RK73GB1J222J

CHIP R

2.2K

1/16W

R444

RK73GB1J102J

CHIP R

1.0K

1/16W

R501

RK73GB1J102J

CHIP R

1.0K

1/16W

R502

RK73GB1J271J

CHIP R

270

1/16W

R503

RK73GB1J180J

CHIP R

1/16W

R504

RK73GB1J271J

CHIP R

270

1/16W

R505

RK73GB1J222J

CHIP R

2.2K

1/16W

R506

RK73GB1J103J

CHIP R

10K

1/16W

R507

RK73GB1J100J

CHIP R

1/16W

R509

RK73GB1J220J

CHIP R

1/16W

R510

RK73GB1J152J

CHIP R

1.5K

1/16W

R511

RK73FB2A470J

CHIP R

1/10W

R512

RK73FB2A100J

CHIP R

1/10W

R513

RK73FB2A222J

CHIP R

2.2K

1/10W

R514

R92-1217-05

CHIP R

0 OHM

R516

R92-0670-05

CHIP R

0 OHM

R518

RK73EB2B330J

CHIP R

1/8W

R519

RK73GB1J333J

CHIP R

33K

1/16W

R520

RK73GB1J183J

CHIP R

18K

1/16W

R521

RK73GB1J101J

CHIP R

100

1/16W

R522

RK73EB2B181J

CHIP R

180

1/8W

R523

RK73GB1J393J

CHIP R

39K

1/16W

R524

R92-1215-05

CHIP R

470

1/2W

R525

RK73GB1J563J

CHIP R

56K

1/16W

R526

R92-1261-05

CHIP R

150

1/2W

R527

RK73GB1J224J

CHIP R

220K

1/16W

R528,529

RK73GB1J471J

CHIP R

470

1/16W

R530

RK73GB1J102J

CHIP R

1.0K

1/16W

R531

RK73GB1J473J

CHIP R

47K

1/16W

R532,533

R92-1252-05

CHIP R

0 OHM J

1/16W

R601,602

RK73GB1J223J

CHIP R

22K

1/16W

R603

RK73GB1J473J

CHIP R

47K

1/16W

R605

RK73GB1J153J

CHIP R

15K

1/16W

R606

RK73GB1J221J

CHIP R

220

1/16W

VR1

R12-6427-05

TRIMMING POT. (47K)

D1-11

DA221

DIODE

Summary of Contents for TK-7108H

Page 1: ...NG 28 ADJUSTMENT 29 TERMINAL FUNCTION 34 PC BOARD DISPLAY UNIT X54 3460 20 35 TX RX UNIT X57 6700 24 37 SCHEMATIC DIAGRAM 43 BLOCK DIAGRAM 47 LEVEL DIAGRAM 49 SPECIFICATION 51 CONTENTS REVISED This service manual applies to products with 50300001 or subsequent serial numbers In terms of the products with the serial numbers earlier than 50300001 refer to the TK 7108H service manual as per part No B...

Page 2: ...required to install or operate the radio 3 PRE INSTALLATION CHECKOUT 3 1 Introduction Each radio is adjusted and tested before shipment How ever it is recommended that receiver and transmitter opera tion be checked for proper operation before installation 3 2 Testing The radio should be tested complete with all cabling and accessories as they will be connected in the final installation Transmitter...

Page 3: ...he schematic diagrams printed circuit board views and align ment procedures contained in this manual Speaker jack cap Power input connector Antenna connector NOTE If you do not intend to use the 3 5 mm jack for the external speaker fit the supplied speaker jack cap to stop dust and sand from getting in Merchandise received License and frequency allocated by FCC Choose the type of transceiver Trans...

Page 4: ... volume level e key Press to decrease the volume level r key PF Programmable Function key The default setting of this key is None no function The programmable func tions available for this key are listed below t key PF Programmable Function key The default setting of this key is Monitor Other programmable functions avail able for this key are listed below y 1 2 3 4 keys Press to select a channel f...

Page 5: ... Monitor Used to release signalling press once or squelch press and hold for approximately two seconds when operating as a conventional It is also used to reset option signalling Scan ON OFF Press this key starts scanning Pressing this key stops scanning Talk around Press this key the transceiver uses the receive frequency and the tone for transmission The operator can call the other party directl...

Page 6: ... scan re start immediately The temporary deleted channels return to pre set delete add channels when the transceiver is turned off or the scan function is switched off 5 Details of Features Time out timer The time out timer can be programmed in 30 seconds in crements from 30 seconds to five minutes and off If the transmitter is transmitted continuously for longer than the programmed time the trans...

Page 7: ...hibited or TX RX inhibited While stun is active if the stun code code is received stun will deactivate When stun matches transpond will function Alert will not be output 7 Audible User Feedback Tones The transceiver outputs various combinations of tones to notify the user of the transceiver operating state Refer to the help file on the KPG 70D regarding the func tions that are not listed below Stu...

Page 8: ... the Power is switched on user mode can be en tered immediately When the PC sends a command the radio enters PC mode When data is transmitted from transceiver the red LED blink When data is received by the transceiver the green LED blink In the PC mode 4CH LEDs MON LED and LED are turned on Notes The data stored in the personal computer must match model type when it is written into the EEPROM Atta...

Page 9: ...y the same program as the master 5 The other slave can be continuously cloned Carry out the operation in step 2 to 4 4 1 Adding the data password If the data password is set in the optional feature menu you must enter the password Master transceiver to activate a clone mode you can use 1 2 3 and 4 to configure the password The maximum length of the password is 10 digits 1 1 Power ON 2 1 4 LED and ...

Page 10: ...13 2 5 8 11 14 3 6 9 12 15 No Color Internal Name connector 1 Red CN2 1 SB 2 Pink CN3 1 IGN 3 Black CN2 3 GND 4 Brown CN3 3 DETO 5 Orange CN3 2 DATAI 6 Yellow CN2 8 FNC4 7 Green CN2 7 FNC3 8 Blue CN2 9 FNC5 9 Purple CN2 12 FNC8 10 Gray CN2 10 FNC6 11 White CN2 11 FNC7 12 NC NC 13 NC NC 14 Sky blue CN2 6 FNC2 15 Turquoise CN2 5 FNC1 Accessory Port Function REALIGNMENT 6 Ignition Sense Cable KCT 18 ...

Page 11: ...Scrambler Board Connection Modification 1 Remove the cabinet and shielding cover from the trans ceiver 2 Delete R202 and R267 on the TX RX unit A 9 8 7 D C B A A12 1 3 7 8 9 10 11 12 1 12 B A11 C A10 D A9 E 1 2 3 4 5 B5 6 B7 7 A8 8 A7 9 A3 10 B11 11 B9 12 B4 E18 Voice scrambler board 12 pins lead wire with connector A E37 1081 05 CN2 12 6 5 11 10 1 4 5 7 9 11 1 11 11 pins lead wire with connector ...

Page 12: ...r board is connected subsequent to the de emphasis circuit Cushion G13 1963 04 Cushion G13 1964 04 Voice scrambler board Front side to CN2 and CN3 to CN2 and CN3 CN3 Voice scrambler board CN2 TX RX UNIT Component side Avoid forming the wiring towards shielding cover closure area 1 2 Example for Connection Picture Trunking Board Fig 3 Insulation sheet Cushion D G13 1972 04 Cushion C Cushion B Trunk...

Page 13: ...the display unit PCB detach the PCB by lifting at the indents of the PCB as shown below Fig 3 Fig 5 5 When mounting the front panel match the 4 tabs of the chassis with the panel being sure they attach securely Tabs Tabs Tabs Indents Tabs Tabs 4 Mount the display unit To mount the display unit on the panel follow the correct procedures shown to ensure easy display unit assembly and good fitting on...

Page 14: ...SYSTEM PLL VCO 16 8MHz 50 4MHz ANT RX TX SP MIC 1 2 Fig 1 Frequency configuration IF Amplifier The first IF signal is amplified by Q351 and the enters IC301 FM processing IC The signal is heterodyned again with a second local oscillator signal within IC301 to create a 450kHz second IF signal The second IF signal is then fed through a 450kHz ceramic filter Wide CF301 Narrow CF302 to further elimina...

Page 15: ...1 IC251 IC161 W NO EVOL2 AF PA IC252 SP IF IC IC301 Q301 NOISE AMP D301 IC301 IC101 AFO RSSI DET CPU IF SYSTEM SQIN RSSI Fig 3 Wide Narrow changeover circuit Fig 4 AF signal system Fig 5 Squelch circuit PLL Frequency Synthesizer The PLL circuit generates the first local oscillator signal for reception and the RF signal for transmission PLL The frequency step of the PLL circuit is 5 or 6 25kHz A 16...

Page 16: ...om ponents and the resulting signal is goes the antenna termi nal APC Circuit The automatic transmission power control APC circuit detects part of a final amplifier output with a diode D606 D607 and applies a voltage to IC501 IC501 compares the APC control voltage PC generated by the D A converter IC161 and DC amplifier IC203 with the detection output voltage IC501 generates the voltage to control...

Page 17: ...trix of the KMI1 to KMO2 ports of the microprocessor The KMO1 to KMO2 ports are always high while the KMI1 to KMI4 ports are al ways low The microprocessor monitors the status of the KMI1 to KMO2 ports If the state of one of the ports changes the microprocessor assumes that the key at the matrix point cor responding to that port has been pressed IC101 CPU KMI1 KMI2 KMI3 KMI4 KMO1 KMO2 1 2 3 P M 4 ...

Page 18: ...ge detect IC IC34 IC34 will generate signal RESET in to the reset terminal on the CPU IC101 to carry out a power ON reset Also CPU IC101 is checking on port 91 Battery Volt age If DC power is less than about 9 5V the radio is unable to power on When the DC power voltage deceases from normal volt age the INT voltage detector IC IC35 will set to high on CPU port 18 INT if B line will became less tha...

Page 19: ...rt 3 44 CEFLS I O CE for flash 45 46 FNC4 FNC5 I O Function port 4 5 47 48 FNC7 FNC6 I O Function port 7 6 49 FNC8 I O Function port 8 50 AFM O AF mute 51 SPM O Speaker mute Pin No Name I O Function 52 AMPSW O AF AMP switch 53 DT O Common data 54 CK O Common clock 55 56 NC I 57 59 DST1 DST3 I Destination 1 3 60 VCC 5V 61 NC I 62 VSS GND 63 NC I 64 NARROW O 65 WIDE O 66 68 NC I 69 CL O Clock for LC...

Page 20: ...ier RX audio Q252 253 FET AF mute Active while AFM is H Ref No Parts name Description Q254 Digital transistor AF mute Active while SPM is H Q255 Transistor AF mute Active while AMPSW is H Q301 Transistor Noise amplifier SQL amplifier Q302 Transistor Buffer amplifier 16 8MHz 3rd over tone Q351 Transistor IF amplifier Q352 FET Mixer Q353 FET RF amplifier LNA Q354 Transistor RF BPF Q402 403 Transisto...

Page 21: ...99 0395 05 SCREW SET ACCESSORY 47 3A T07 0739 05 SPEAKER D1 4 B30 2238 05 LED Y D5 10 B30 2239 05 LED SY D11 B30 2237 05 LED YG D12 B30 2240 05 LED SR C4 CK73GB1H103K CHIP C 0 010UF K C8 17 CK73GB1H103K CHIP C 0 010UF K C18 CK73GB1A105K CHIP C 1 0UF K C25 CK73GB1H103K CHIP C 0 010UF K C27 CK73GB1C104K CHIP C 0 10UF K CN1 E40 6005 05 FLAT CABLE CONNECTOR J1 E08 0877 05 MODULAR JACK L1 L92 0138 05 F...

Page 22: ...2 05 CHIP ELE 470UF 16WV C283 CK73GB1H102K CHIP C 1000PF K C301 C92 0507 05 CHIP TAN 4 7UF 6 3WV C302 CK73GB1H102K CHIP C 1000PF K C303 CK73GB1H472K CHIP C 4700PF K C304 305 CC73GCH1H331J CHIP C 330PF J C306 CK73GB1H102K CHIP C 1000PF K C307 CK73GB1E223K CHIP C 0 022UF K C308 CK73GB1H102K CHIP C 1000PF K C309 CK73GB1E223K CHIP C 0 022UF K C310 CK73FB1C334K CHIP C 0 33UF K C311 312 CK73GB1C104K CHI...

Page 23: ...UF K C549 CM73F2H221J CHIP C 220PF J C550 CM73F2H680J CHIP C 68PF J C552 553 C93 0562 05 CHIP C 15PF J C554 C93 0603 05 CHIP C 1000PF K C555 C93 0555 05 CHIP C 5 0PF C C556 C93 0603 05 CHIP C 1000PF K C557 558 CK73GB1H103K CHIP C 0 010UF K C559 CK73GB1C104K CHIP C 0 10UF K C560 CK73GB1H102K CHIP C 1000PF K C574 CK73GB1H102K CHIP C 1000PF K C576 CK73GB1H221K CHIP C 220PF K C601 CC73GCH1H120J CHIP C...

Page 24: ...5 CHIP R 0 OHM J 1 16W R130 131 RK73GB1J102J CHIP R 1 0K J 1 16W R151 RK73GB1J103J CHIP R 10K J 1 16W R152 RK73GB1J472J CHIP R 4 7K J 1 16W R161 RK73GB1J122J CHIP R 1 2K J 1 16W R162 RK73GB1J152J CHIP R 1 5K J 1 16W R163 RK73GB1J473J CHIP R 47K J 1 16W R164 166 RK73GB1J102J CHIP R 1 0K J 1 16W R201 RK73GB1J681J CHIP R 680 J 1 16W R202 R92 0670 05 CHIP R 0 OHM R203 RK73GB1J104J CHIP R 100K J 1 16W ...

Page 25: ...73GB1J152J CHIP R 1 5K J 1 16W R408 RK73GB1J100J CHIP R 10 J 1 16W R409 RK73GB1J104J CHIP R 100K J 1 16W R410 RK73GB1J822J CHIP R 8 2K J 1 16W R411 RK73GB1J562J CHIP R 5 6K J 1 16W R412 413 RK73GB1J103J CHIP R 10K J 1 16W R414 RK73GB1J471J CHIP R 470 J 1 16W R415 R92 1252 05 CHIP R 0 OHM J 1 16W R416 RK73GB1J471J CHIP R 470 J 1 16W R417 RK73GB1J224J CHIP R 220K J 1 16W R418 419 RK73GB1J102J CHIP R...

Page 26: ...4V MOS IC IC203 NJM2902V MOS IC IC251 NJM2902V MOS IC IC252 2B LA4600 AF POWER IC IC301 TK14489V BI POLAR IC IC401 MB15A02 MOS IC IC402 UPB1509GV BI POLAR IC IC501 TA75W01FU MOS IC Q1 2SK1824 FET Q31 2SA1641 S T TRANSISTOR Q32 KRC102S DIGITAL TRANSISTOR Q33 2SA1745 6 7 TRANSISTOR Q34 KRC102S DIGITAL TRANSISTOR Q35 KTA1664 Y TRANSISTOR Q36 KRC102S DIGITAL TRANSISTOR Q61 KRC404RTK DIGITAL TRANSISTOR...

Page 27: ... 26 24 15 Q504 IC252 A 700 Caution label 701 S No label A A C C C C C C Cx2 Bx12 B B 12 30 27 25 10 TX RX unit Display unit A M2 6 x 8 N67 2608 46 B M2 6 x 6 Br Tap N87 2606 46 C M2 6 x 14 Br Tap N87 2614 46 Parts with the exploded numbers larger than 700 are not supplied ...

Page 28: ...2 05 35 Packing fixture H12 3112 05 8 Instruction manual B62 1665 10 702 Pamphlet 703 Pamphlet 38 Item carton cse H52 1829 22 45 Screw set N99 0395 05 41 Bracket J29 0662 03 36 Carton board H13 1190 02 14 DC cord E30 3339 05 22 Fuse 6x30 F51 0017 05 x 2 Parts with the exploded numbers larger than 700 are not supplied ...

Page 29: ...r 20A 8 AF Volt Meter Frequency Range 50Hz to 10kHz AF VTVM Voltage Range 1mV to 3V 9 Audio Generator AG Frequency Range 20Hz to 20kHz or more Output 0 to 1V 10 Distortion Meter Capability 3 or less at 1kHz Input Level 50mV to 10Vrms 11 4Ω Dummy Load Approx 4Ω 10W or more 12 Regulated Power Supply 13 6V approx 20A adjustable from 9 to 17V Useful if ammeter requipped 13 Spectrum Analyzer Center fre...

Page 30: ...shield cover as below Fuse To mount the fuse the cable terminal direction must be as follow Locator Speaker cable This side up This side up Cable terminal Cable terminal Fuse Pin 1 marker IC252 Part name label face down TX RX UNIT Component side Power MIC jack 1 2 3 4 keys Volume up down key key Speaker Display CV R518 F501 Q503 Q504 IC252 R516 R524 CNVSS RESET POWER 5M E B RF RXD TXD DC PC 8T IGN...

Page 31: ...ide Spectrum analyzer BPF TC352 to Fig 1 filter CH RX high Wide 2 Tra generator output 30dBm Connect the spectrum analyzer to BPF terminal Adjustment of TX VCO lock voltage 1 Remove R516 F501 R518 and R524 all on component side 2 Remove PCB from chassis 3 Transmit and check voltage at CV point Warning Do not transmit if step 1 is not complete 4 Adjust of voltage can be done by tuning TC402 Item Co...

Page 32: ...CH RX center Wide Narrow CH RX high Wide 2 SSG output 120dBm 0 22µV Wide 119dBm 0 25µV Narrow Mod 1kHz Dev 3 0kHz Wide Dev 1 5kHz Narrow Item Condition Test equipment Terminal Parts Method Specifications Remarks Measurement Adjustment Transmitter Section 1 Frequency 1 CH TX center Frequency counter ANT PC key Adjust to center frequency Within 100Hz 2 Transmit 2 Maximum 1 CH TX high Power meter VR1...

Page 33: ...he wire to RF location Transmit and check for power to be within the range of 0 3W 0 6W If power found is less than 0 3W check the circuit before the Drive FET ADJUSTMENT 5 DQT 1 CH TX low Wide Modulation analyzer ANT PC key Adjust the waveform as below balance CH TC center Wide Narrow or Linear detector CH TX high Wide LPF 3kHz 2 Transmit Oscilloscope 6 MAX 1 CH TX low Wide Modulation analyzer AN...

Page 34: ...ler Code1 1 O FNC6 Scrambler Code2 2 O FNC7 Scrambler Code3 4 O FNC8 Scrambler Code4 8 O Port Function is Low Active Exclude Scrambler Code CN3 No Name I O Function 1 IGN I Ignition sens input 2 DATAI I External transmit signal input 3 DETO O FM detector output 4 TXAFI I TX audio input from scrambler board 5 TXAFO O TX audio output to scrambler board 6 EMGMIC I Emergency MIC input 1kHz 1 2mVrms 7 ...

Page 35: ...R12 R13 R14 R15 R16 R17 R18 R19 R20 Q4 Q9 R1 R2 R3 R4 R5 R6 R7 R8 R9 CP3 CP4 C10 C11 C12 C13 C14 C15 C16 C17 C18 J72 0916 09 J1 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 POWER UP DOWN 1 2 3 4 MONI PROG J72 0916 09 J1 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 POWER UP DOWN 1 2 3 4 MONI PROG PC BOARD TK 7108H 36 35 DISPLAY UNIT X54 3460 20 Component side view J72 0916 09 DISPLAY UNIT X54 3460 20 Foil side...

Page 36: ... POWER PTT CL 5C KMO2 KMO1 KMI1 KMI2 GND MIC GND 17 2 18 C E I R229 R420 R230 R231 C203 C206 R249 C210 C211 C213 C408 C214 C215 C602 C603 C410 X401 C412 C413 C417 C226 C227 C228 C229 R269 C423 C230 C82 Q35 F501 R276 R278 R279 R280 C98 C250 D1 D4 D5 D6 D7 D201 C267 C268 D401 Q503 C273 Q504 G D C275 C277 C278 IC252 1 10 D602 L302 L303 L304 IC201 C281 IC202 L503 L504 L505 L506 L507 IC401 Q351 R107 D1...

Page 37: ... C101 R526 C102 C104 C301 C302 C306 C307 C308 C309 C501 C502 C503 C504 D61 C505 C506 C507 C509 R356 R358 C510 C511 R359 C512 C513 C515 R360 XF351 R361 R362 C326 R363 R364 R365 R366 R367 R368 R369 C526 R370 R371 R31 R372 R32 R33 R373 R34 R374 R375 R376 R4 R378 R38 R39 R40 R41 C357 C358 C359 C360 D301 C361 C556 C362 C557 C363 C558 C364 R61 R62 C366 C367 Q404 C368 Q405 G S D G S D C369 TC351 Q406 G S...

Page 38: ...18 R322 R323 R518 R519 R520 R521 C103 R528 R530 R531 C303 C304 C305 R151 R152 C310 C311 C312 R350 R351 C315 C316 C317 R354 C318 R161 R162 R163 R164 R165 R166 C517 C323 C518 C519 Q1 C522 C527 C528 C529 R1 R35 R2 R37 C530 R379 R5 C533 C536 C152 C545 C351 C546 C162 C163 C164 Q201 C550 C554 C555 D303 Q402 Q403 L201 R72 R74 R76 L403 R78 L404 C574 C576 R81 R82 C389 IC501 CN1 CN3 1 11 CN4 1 GND NC TXDATA...

Page 39: ...549 220p 27p 27p L506 9 5T C545 1000p C546 0 47u C574 1000p C576 220p C552 C553 C550 68p 15p 15p L508 2 5T 8T D605 C601 12p D603 C605 C388 R378 CN1 69 5C SB 100 R126 1k R127 1k 83 R125 1k 84 86 R128 1k 85 2SK1824 Q1 5C R5 22k C10 1000p 5C POWER 35 R110 47k 5M R151 10k R163 47k C269 0 1u R270 2 7k 5M CNVSS R101 47k R78 1k 5M R86 0 2SK1824 Q87 C87 18p C88 6p X86 L77 1934 05 C90 18p C89 6p R76 18k D ...

Page 40: ...GE PUMP CHARGE PUMP 16 8MHz BPF Q36 KRC102S Q254 DTC363EU IC161 M62363FP 3 8 IC161 M62363FP 4 8 8T Q406 2SK508NV K52 IC35 PST9140NR IC161 M62363FP 8 8 5C RESET X86 IC161 M62363FP 1 8 IC34 PST9140NR DTMF BEEP 8TC SB SQIN Q32 KRC102S 8C PTT SBC KMI3 Q251 2SC4617 S PTT TXD 8C MICBL MIC IDC FINAL AMP Q404 2SC4649 N P 16 8MHz 8C SPM MICEM SIGNAL PTT TXD Q34 KRC102S CM 8T DRIVE AMP SB B IF DEMODULATOR G...

Page 41: ... measurements in the RF section connect the RF level meter In the RF section use a 0 01µF coupling capacitor The display shows the SSG input value required to obtain 12dB SINAD TX RX Unit Q410 18dBm 12 1 1 G1 4Ω 11 2 Q411 10 FINAL Amp 2 Q503 IC251 2 S 7 Q352 10 D409 IC252 TX RX Unit S IC251 Display Unit IC402 D Audio Frequency 5 IC161 Q501 1 D TX RX Unit VCO IC251 MIC To make measurements in the A...

Page 42: ...37 D inch mm 2 60 lbs 1 18kg Channel Frequency Spread 28MHz RECEIVER Measurements made per EIA standard EIA TIA 603 Sensitivity 12dB SINAD Wide 0 28µV Narrow 0 35µV Selectivity Wide 75dB Narrow 65dB Intermodulation Wide 70dB Narrow 60dB Spurious Response 75dB Audio Power Output 4 0W Frequency Stability 2 5ppm TRANSMITTER Measurements made per EIA standard EIA TIA 603 RF Power Output High 50W Low 2...

Page 43: ...is France KENWOOD ELECTRONICS U K LIMITED KENWOOD House Dwight Road Watford Herts WD18 9EB United Kingdom KENWOOD ELECTRONICS EUROPE B V Amsterdamseweg 37 1422 AC Uithoorn The Netherlands KENWOOD ELECTRONICS ITALIA S p A Via G Sirtori 7 9 20129 Milano Italy KENWOOD IBERICA S A Bolivia 239 08020 Barcelona Spain KENWOOD ELECTRONICS AUSTRALIA PTY LTD A C N 001 499 074 16 Giffnock Avenue Centrecourt E...

Search results

Summary of Contents for TK-7108H

Reviews:

Related manuals for TK-7108H

Brands by name

Popular brands

Kenwood TK-7108H, Service Manual

Search results

Summary of Contents for TK-7108H

Reviews:

Related manuals for TK-7108H

Brands by name

Popular brands