Kenwood TK-270G, TK-260G service manual PC Board View

Page 42

1

2

ABCD	E	FG

TK-260G/270G	PC BOARD VIEW

TX RX UNIT (X57-5870-XX) Component Side View

0-10:TK260G K,M, 0-11:TK-270G K, 0-21:TK-270G M

H

I

J

K

L

M

N

O

P

Q

R

S

R218

Q35

TX-RX UNIT (X57-5870-XX)

C243

C196

R157

1

C211

Component Side View

4

1

C194

6

2

5

3

4

5

6

7

MIC1

C266

R131

R130

R92

D18

R135

L42	C174
	10
	IC11
C204	1
Q32
R151

CN3

RXD

C177

TXD

R185

C173

C244

L44

R206

R201

R200

C229

R205

6

C178

R161

AFO

D22

C176

S

D

G

L39

Q30

F1

R139

C182

C181

R138

R127

C161

B

5

R145

C201

D15

C159

Q33

R166

C71

C101

C210

R70

C179

R160

C200

R59

R49IC3R64

C95

C96

C104

R55

Q13

R50

R46

Q34

1

R54

8

C111

R62

R68

5

R45

4

Q15

R73

R207

A / 2 J72-0664-02

R165

3

4

R184

C217

C221

D23

R118

R259

Ref. NO.

Address

IC17

C184

R164 C202

C209

IC1

8E

R148

R123 R122

C261

R147

C207

R170 C216

8

5

16

9

1

IC3

6F

R239

22

C203

12

C215

C223

8

IC5

4O

R159

C218

8

C271 C225

R144

IC10

IC6

IC6

4P

C268

5

23

11

C224

R199

R210

IC10

4N

R232 R230

C58

IC11

5D

R231

R31

C246

C260

R240

CP10

R137

R209

R202C233

C235

C240C236

R213C239

1

4

1

IC5

8

9

16

R104

IC12

5O

R34

C234

IC13

7O

BPF

17

16

R133

IC14

R40

IC14

4L

R186

C227

C230

R212

C165 L40

R35

X2

IC15

6M

C238

R224

33

1

IC12

IC16

7K

C226

R211

R237

IC17

3I

44

R208

C190

34

R179 R174

CP14

CP13

CP12

CP11

CP9

CP8

CP7

CP6

IC18

6J

R149 C219

C191

R163

C208

IC19

8J

C248

R150

C199

8 R152

R143

R154

C183

R153

32

1

R158

C198

C205

C206

R167

CP15

Q13

6G

8

IC18

7

CP5

C212

Q15

6E

CP19

5

CP3

R162

R156

R183

R173

IC15 1

R169

R175 Q36

CP17

75

51

Q26

8K

76

50

Q30

4E

R171

CP18 CP16

CP2

Q31

8N

C250

R220

1

4

C220

14

Q32

5D

R221

C247

R225

R181

C222

CP4

Q33

5D

C253

C252

C251

R168

Q34

5E

R226

C242

R120

R219

R214

KIN0 KIN1 KIN2

KIN3

KOUT3

KOUT2 KOUT1

KOUT0 SB

C245

R182

C213R176

IC13

R121

Q35

3L

VR1

Q36

6M

L41

R65

R71

1

16

D15

5F

8 R215

C231

CE

5M DI CL GND LMP

CN1 KIN4

L43

R60

5

D19

D17

7M

8

9

2

1

L11

IC1	GND

ANT

IC16

C162

C189

D19

7M

R204

C232

C249

D17

R155

R100

D22

4F

100

26

R146

D23

3M

R101

1

25

C257

R222

C258

R126

C255

R234

LAMP

MONI

IC19

1

1

4

R18

0

R177

R233

R

250

C185

R172

R260

R256

54

8

R

249

C180

PTT

R223R61

R235

R261 R198 C270

C138

C141

Q26

Q31

C193

C192

R140

CP20

R178

R241

C259

R242

C254

C269

R203

X3

C100

LV

X9C103SI

TC35453F

TA73W01FU

2SK1824

TC75W51FU

D

5

5

10

11

12

13

14

Component side

Pattern 1

Pattern 2

Pattern 3

Pattern 4

Foil side

43

S401

PTT

30622M4102GP

DTA114EE

DTA144EE

DTC114EE

S402

B / 2	LAMP

2SA1362(GR)

2SC4619

B

E

C

2SK1588

S403			8		8
MONI			S

				4	4
				4
		G	1		1
			1
	TA7368F		AT29C020-90TI	BU4094BCFV	LC73872M
			AT29C020-90TI
UPA672T
			AT2408SN10SI2.5	NJM2904V	M68732H
				NJM2904V

					5
					4
					4
					3
44					3
44					2

1

Image 42

Contents Contents TK-260G/270GTK-260G/270G General / System SET-UPOperating Features Operation FeaturesDtmf keypad Programmable keys3 keys SP/MIC jacksIcon Description Display TK-270G onlyScan Operating TK-270G only Scan typesDetails of Features Option Signalling DTMF/2 tone For the panel Test Mode TK-270G only Operating Features / RealignmentHow to Enter Each Mode Audible user feedback tonesRealignment PC ModeFirmware Programming Mode ChecksumClone Mode FunctionChannel Setting Mode Self Programming Mode TK-270G onlySelf programming mode setting Flow ChartDelete DtmfTone ADDFunction Setting Mode Function Setting ModeYES Cttyes YES/NOTOT CttnoMemory Reset Mode Disassembly for Repair Separating the case assembly from the chassisSeparating the chassis from the unit TK-260G Frequency configuration Circuit DescriptionReceiver PLL frequency synthesizer Transmitter System Power supplyEncode signaling Microphone amplifierControl Circuit Optional Board TerminalCircuit DESCRIPTION/SEMICONDUCTOR Data UPB1509GV IC301LCD Driver LC75823W Display Unit IC501 TK-270G only Shift register 1BU4094BCFVIC5 Semiconductor DataMicroprocesser 30622M4102GP TX-RX Unit IC13 Shift register 2BU4094BCFVIC6Description of Components Display Unit X54-3250-10 TK-270G OnlyTX-RX Unit Parts List TK-260G/270GTX-RX Unit Ceramic Trimmer CAP10P CN1 Coil R92 RK73GB1J100J VR1 Exploded View TK-260G Exploded View TK-270G TK-260G/270G PackingAdjustment Test Equipment Required for AlignmentRepair Jig Chassis Test Mode TK-270G only Test mode operating featuresRepair Jig Extention Flat cable part No E37-0851-05 LCD display Tuning mode Wide/Narrow indicator Panel Tuning ModeTuning mode Common Section Transmitter SectionAF Vtvm Hpfoff Ptton Dtmf BPF-WAVE Adjustment points TX-RX unit X57-587 Component side view Foil Side ViewPC Board View TK-260G/270G Display Unit X54-3250-10 Component Side ViewDisplay Unit X54-3250-10 Foil Side View PC Board View DTA114EE TK-260G/270G PC Board View TK-260G TK-270GSCHEMATIC Diagram Block Diagram Level Diagram KNB-14KNB-15A KMC-17 Speaker microphone KMC-17 Parts List KMC-21 Speaker microphone KMC-21 Parts ListOptions Specification General