EFJohnson 764X, 761X service manual VHF 7610 MAIN BOARD SCHEMATIC, Vhf Main Unit

LVIN

R55	75k	R232
		470k

REF

R54	C82
47k	33p

T5

R5

5V

15.3MHz

CP1

Q11

2SK880

R47 1k

R41 1k

	MA111			Q10	R38		R32	100
D11		R40	4.7k	2SC4081		1k

T5

R242	R243	68
470	Q38
			R7
	2SD1664
			33

R6	L4
22	LW-25

VHF MAIN UNIT

BAL

R233

1k

C85	C86	0.001	D12 HVU17
2.2

X1 CR-575

C80 12p C79 56p

R51

100

1

IC2 µPD3140GS

20

R48	47k	C66	0.001	R46
				10k
		R44 10

C65 0.001

C64 0.001

C63 10 R39 47k C62 0.001 R33 470 C49 0.001

R30 680 R28 470 R26 390

R22 100

R18 100 3.9k(PMR) 8.2k(LMR)

R16

R14 22

C299 0.001

10nH(LMR,H-band only) 47nH(Others)

R9

56

C19	0.001	C18	470p
IC1

C17 0.001

C16	470p
	18p(LMR,L-band)
	8p(PMR,L-band)
	12p(H-band)

1k(PMR) 100(LMR,H-band) 330(LMR,L-band)

PLST

SCK

SO

UNLK

L16

C75 9p (H-bandonly) C74 20p(L-band) 9p(H-band)

32nH
R50	100	C72	47p	C70	47p
C73	0.001	C71	47p	C69	0.001

R49

EXB-V8V

(1kx4)

R45 2.2k

C68 0.01

2

3

4

5

6

7

8

9

10

VCC1 GND1

IN1IN2

ENBVCC2

CLKXB

DATAXI

T1XO

LOKGND2

CP1CP2

FI1FI2

FO1FO2

19

18

17

16

15

14

13

12

11

C67 0.001

R43	2.2k		R42
			560
C61	0.68	C60	2.2	C59	0.1
MOD			R59	22k
IN			R238	18k
		F	R245 10k		R60 15k

L15

2.7µH

C58	0.001
	C281	0.001

Q9

DTC114EU

C57 0.001

R37

1k

D10

MA77

L14 MC152-E558CN -100024

D9	MA77	C54 100p(L-band) 56p(H-band)		D8	HVU350
C56	0.001	C55	33p	D7	HVU350

C52

2p

C51	0.001
R36	8.2k

C53

1.5p

R34 8.2k

Q7 2SC4226

R35 220

Q8

2SC4226

C50 0.001

C47 0.001 R31 68k

Q6

2SC4215

C48

0.5p

L13	0.1µH	C44	0.001	R29	68k	L12	0.1µH
C45				Q5
	5p			2SC4215
		C46
		22p

	C42	0.001
C43	12p

R27 39k

Q4

2SC4215

C41

18p

R25 4.7k

C40 0.001

D5

MA77

D6

MA77

R23 4.7k

R24

100

R20 8.2k(PMR) 15k(LMR)

C39

10p

R21 5.6k

R246	150	C37	0.001
			C36
Q3			47p
2SC4215
C38	0.001	R19	150

L9 0.12µH(L-band) 0.15µH(H-band)

Q2

2SC4215

R17 1.8k C35 0.001

C33 R13 2.2k

15p(PMR) 18p(LMR,L-band) 8p(LMR,H-band)

R15 100 C32 0.001

C31	470p	L8	68nH	C28	470p		C27	0.001	C26	0.001
R12				C29
560
				Q1
				2SC4703
D29				C30	0.001	R11	27(PMR)	5.6(LMR)	R10 27(PMR) 5.6(LMR)
DA221

SC-1364(PMR,L-band)				GND
SC-1365(PMR,H-band)
M68702L(LMR,L-band)				PI
M68702H(LMR,H-band)
				1
L7	L6
C25	C24	C23	R8	270 (PMR only)
	36p(PMR,L-band only)
	27p(H-band)

VGG	VDD
2	3

GND

FWD

PO

4

L5

R3 C5 47 0.5p

C22 22p(L-band)

20p(H-band)

LA253

22p(L-band)

20p(H-band)

REV

C20

R5

1.5k(PMR)

C7

470p

1.8k(LMR)

C275

C274

470p

C273

0.001

C272

0.001

C271

0.001

C297

D2

47p

470

1SS375

	10p(L-band)
D3	C15	9p(H-band)
MI407	0.001
C4		L3
470P		LA253
R2 47	C13 36p(L-band) 33p(H-band)	C11 20P(PMR) 15P(LMR)
R4

L2		L1
LA243		LA253
C9	C8 12p(PMR only)
C10 15P(PMR) 12P(LMR)		C3 6p	C1 5p
D1
1SS375

W1ANT

R1 82k

R5

18p(LMR,H-band only)

22p(Others)

5V

18p(PMR,L-band only) 12p(H-band)

R112

100

R111

100

Q16

DTA144EU

NWC

	R108	22k	R109	10k
		FI3
		SFPC450G
D23		I	O
DAN202U
R106	15k

	C147	0.01	C146	0.01	R110	47k
R107	22k		0.1
			C148
			D22
			DAN202U
			C149		R104
			0.1		10
	R105	15k

C144			C142			C140
15p			4p			10p
C145 10p		L27 1µH	C143 12p	C141 18p		L26	1µH
FI4		C139	220p	220p	R98	100k
				C138
SFPC450E
I	O			R99 2.2k (L-band) 3.3k	(H-band)
		R100	330k			C137	0.1

R101 390

R102

1.5k

C136 1 C135 0.01

	IC3			R241	100k
	TA31136FN
1			16
		OSCIN	MIXIN
2
			15
3		OSCOUT	GND
			14
4		MIXOUT	N-REC
			13
5		VCC	N-DET
		IFIN	12
6			RSSI
		DEC	11
7			IFOUT
		FILOUT	10
			QUAD

89

FILIN AFOUT

3.6V NOIS

C134	0.001	R96	1.8k	X3
				CDBCA450CX24
		C131	100p	R95	C130
				1.5k	0.01
				Q15			R93	10k
	R97		470	2SC4081
	C133	0.033	C132	0.001	C290	0.01	C129	0.01
		SD

				R90	1.5k
		2.2V
C127	0.01	R92	470	R91	100k
C128				R89

0.01560

Q14

2SC2714

FI2

SFPC450G

R84	100
C119	0.01	C120	0.001	C121	68p

R78

4.7k

R77	100
C115	0.001

R69	47			RX:4.7V
					RX:0V
C101	0.001	L21	33nH	R67	10k

	Q35
	DTA144EU
0.001	0.001

C280 47p C279 470p C278 0.001

R228

C277 0.001 C276 6.8

C151 0.001 C153 0.001 C155 0.001

R167

4.7k

C150 0.001 C152 0.001 C154 470p

Q17

2SB1143

R113

3.9k

C156

FI1b

	C124	R87
FI1a	0.001	820

RX:0V

C113

C107

1p

HVU350 HVU350 HVU350 HVU350

C104

C99

1.5p

Q12

3SK239

C286	C202
	HVU350

C93

1P

HVU350

C90	18k
4p

L18	L17
656LZ-09K	656LZ-09K

15k(LMR,L-band only) 4.7k(Others)

2.2

C126 11p

				Q13
RX:1.2V				3SK166
FI1
FL-285
R86	220	C123	0.01	C122	0.001

R83 10k

C118 L23

15p 47nH

R81 100k L24 0.1µH C117 56p C116 15p

5p

L22 33nH

C112 15p(L-band) 8p(H-band)

D21	D20	D19		D18
C111 120p(L-band) 100p(H-band)	R74	R76	1M	R75	1M
	100k
	C110 0.001	C109	0.001	R73
				100k
					T3
	T4

0.001

		RX:0.63V
C106 120p(L-band) 100p(H-band)	C105 6p(L-band) 4p(H-band)	R72 100k	C103 0.001	C102 0.01	R71 100	C100 0.001	R66 100k

	-band)
C98	9p(L			R62	R64	1M
				100k
	54nH band)6p(H-	RFATT C97 220p(Lband)- 100p(Hband)-	T2 D17
L20				C96 0.001	C95	0.001

D16

R63 1M

R61

100k

T1

			4p(L-band) 1.5p(H-band)
	-band) -band)
		C91
C92	150p(L 100p(H		L19 54nH

D15 1SS352 C89 7p

D14 MI809 D13 MI809 C88 22p C87 15P(PMR) 18P(LMR)

DAREF

		R118
Q19	R119	15k
	100k
DTC144EU
		R248	330k

T4 TMUT

R117	150k		IC6c
			NJM2902V
			9
				8
			-
			10 +
C160	0.001	C159	0.001	R249	10k
		Q23
		DTC144EU

Q18

R116 2SC4081

R120 4.7k

C157 0.001 C298 R115 10k

22(LMR,L-band only) 10(Others)

T5

5V

5V 5V

D31

DA204U

R234 100k

R178

33k

C287

B

R229

C196

R227

100p

C198 15p

47k

0.1

680k

R236

R175

R174 680k

R230

2.2k

R226 180k

C191 0.01

C188

0.047

100k

C288

0.01

C295

C192

C190

C189

10k

A

4

13

0.001

0.01

8

0.01

0.01

-

14

3

5

2

-

1

12 +

C197

R166

2 +

1

R160

6 +

7

3

+

120k

-

4

Q22

15k

-

11

0.1

IC8b

R235

0.001

R176

680k

C199

IC8a

DTC144EU

NJM2904V

10k

C296

IC7a

0.1

R165

NJM2904V

NJM2902V

R171

C194

R162

AFREF

1M

47k

2.2

68k

R179 150k

R180 39k

C201

10

R181

4.7k

MICOUT

R172 15k DET

AFOUT

R170

1M

C294

0.01

R164 4.7k

AFHPF

R163 1M

R161

470k

MIC

MICIN

R168

1M

a

b

c

8V

R157

12k

R159 10k

R156	C213	R150
680k	0.001	210k
	W6

6

-7

5 +

IC7b

NJM2902V

R158 680k C187 0.01 R155 10k TONE

R146

68k

R149	180k	R148	56k		R147	180k		C284
								390p
							R223
							33k	9
C186	0.1	C185	0.1		C184	2.2			+	8
								10
									-
					R177			IC7c
								NJM2902V
					47k
R153	10k EXTONE	R152	10k	DTCS	R151	10k	C283 0.0018	R154 100k	C183	0.01

R145 10k

e

R141

R140

100

100k

R142

100k

R143

C181

0.001

C180

0.001

100k

C182 10 T1

T2

T3

T4

C179

0.001

C178

0.001

DAST

SCK

SO

C177 0.01

C176

0.01

	IC5
	M62363FP-650C
1		VIN1		VIN8	24
2					23
		VOUT1	VOUT8
3					22
		VOUT2	VOUT7
4					21
		VIN2		VIN7
5					20
		VDD		GND
6					19
		LD	RESET
7		DI		DO	18	R139 1M
8		CLK	VDAREF		17
9		VIN3		VIN6	16

1015

VOUT3 VOUT6

1114

VOUT4 VOUT5

1213

VIN4 VIN5

	e	C175 0.01	C174 0.01	REF	DTCS	BAL	NWC
AFREF

R136

68k

Q21

DTC144EU

C171

0.001

R135	IC6b
	NJM2902V
27k
	5
		7
	+
	6
C172	-
200p

R169

2.2k

R137 1M C173 0.001 R211 2.2k

R134

4.7k

IC4

BU4066BCFV

14

13

12

11

10

9

8

VDD

CONT A

CONT D

I/O

B O/I

C O/I

I/O

I/O

O/I

O/I

I/O

CONT

CONT

VEE

1

2

3

4

5

6

7

C170 0.01

C169 0.01

MMUT

b

c

a

RMUT

MOD

BEEP

C168	0.1	R130
R131			10k
68k
		C167	0.01
R133	47k	R127	100k

C164 0.022

R128 100k

13

-14

12 +

IC6d

NJM2902V

C165 0.01 R126 10k

R125						C293
10						0.1
		R240	6.8k	R123		Q20
Q39						DTC363EK
				6.8k
DTC144EU
AFON	AFONOP			C163	1	R124	100k
		D33
		DAN202U

C162 0.01

		IC6a
		NJM2902V
R121	300k		2	-	1
					4
			3	+
					11
R122		C161
	75k		0.1

C166 2.2

T5

R5

5V

CPU5

GR129 560

AFO

7.7V			VCC
	H	TX:0V	TX:5.0V
		RX:5.0V	RX:0V

T5	Q29	13.2V
R5	2SB1201

R212 EXB-V8V

(1kX4)

OPINT

OPCS

BUSY

BEEPOUT

R213

EXB-V8V(1kX4)

TONE

BEEP

C238

0.001

C236

0.001

C237

0.001

R182

47k

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

C292

C254

C253

C252

C251

C250

C249

C248

J1

C291

C285

C270

C269

C268

C267

C266

C265

C264

AFO

8V

1

2

5V

SI

CPU5V

AFO

R216

GND

SI

R237 1k

EXB-V8V(1kx4)

OPINT

OPT3

OPT3

OPCS

OPT2

OPT2

BUSY

OPT1

OPT1

BEEPOUT

OPV3

OPV3

TONE

OPV2

R217

EXST

TMUT

BEEP

OPV1

SO

SCK

T5C

EXB-V8V(1kx4)

DTCS

PTT

OPV2

RFATT

PTTIN

OPV1

IC11

BU4094BCFV

1

STRB

2

DATA

3

CLK

4

Q1

5

Q2

6

Q3

7

Q4

8

VSS

D24

MA111

VDD	16
	15
OENA
	14
Q5
	13
Q6
	12
Q7
	11
Q8
	10
Q'S
	9
QS
R222 47k	HORNO	AFON	AFHPF	NWC	EXEN	C203 0.01
					5V

MA111	R183	100k
D25
D26
DAN202U
	Q24	RMUT
	DTC144EU

MMUT

R184	100k
R185 NTCCF20124AH (47k)
TEMP

R186 100k

Q36	R221
2SD1664	22
	R193	2.2k

C282 10 D30 MA8082

	C205	0.1
	IC10
	LA4425A
		1
		2
C204	220

		13.2V
5		C206
		470
4
3
R194	10k	R195	10k

Q25

DTC114EU

PWON

Q26

2SB1124

R197	1k	R196
		47k

5V

CPU5

Q27

2SA1588

R199 4.7k

C207 22 C208 0.001 C209 22 C210 0.001 C211 22 C212 0.001 T5C

		5.0V
	Q28	(PMR)
			6	5	4
	2SA1588
R198	47k	R200	47k
	R201		1	2	3
		1k	R203
			4.7k
Q37		PWON	Q31
DTC144WU			DTC144EU

	R202	10k
Q30
XP6501
R204
1k
C215	10	C216	100

		5.0V
	IC9
	S-81250PG-PD
			O	I
C217	0.01			G	C218	0.01
	5V

15K	R251
R252	PTH9C32
Q40
2SC4081
C301	0.001
VIN	C219 0.001	R206 100k

LMR (only)

R205	300k
C220	470	D27 DSA3A1	C221 0.001	C222 470p	C223 47p	D32 RD20E

W7

VCC

GND

J4

SP

P1

DTCS

RFATT

R214

EXB-V8V(1kX4)

NOIS

UNLK

EXEN

EXST

R215

EXB-V8V(1kX4)

DAST

PLST

VIN TEMP MIC

NOIS

DET

PTTOUT

R187

R188

UNLK

PWON

PTTIN

1M

1M

EXEN

EXPTT

R218

EXST

DIMIN

EXB-V8V(1kx4)

DAST

SO

DET

PLST

SCK

PWON

VIN

SD

EXPTT

TEMP

LVIN

DIMIN

MIC

GND

R219

39

40

EXB-V8V(1kx4)

47k

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

47p

to

SO

SCK

FRONT UNIT

SD

R247

C247

C246

C245

C244

C243

C242

C241

C240

J2

C263

C262

C261

C260

C259

C258

C257

C255

C256

LVIN

C200

0.22

IN

EXTONE

R189 1M R190 100k R191 100k R192 100k

J2

	C	1	30
		PTTIN
		PTTOUT	5V
		MICOUT	HV
		MICIN	MICMUTE
		NC	AFONOP
		BUSY	BEEPOUT
		NC	RXMUTE
		SIGOUT	DET
		OPT1	AFOUT
		OPT2	REM
		OPT3	OPCS
			OPINT
		OPV3	SO
		OPV2	SI
		OPV1	SCK
		15	16
		for
D	E	OPTIONAL
		UNIT

C224 0.001

C225 0.001

NOTE: All 7610 Models are LMR (U.S.A.), H-Band (146-174 MHz).

Q32

DTC114EU

DIMIN

HORNO

AFO

DET

EXPTT

C229	Q34
1	2SJ144
IN
R208	1M	R209	1M	R210	1M

Q33

DTC114EU

R207 100k

C230

0.22

D28

MA111

I

C226 0.001 C227 0.001 C228 0.001

C231 0.001 C232 0.001 C233 0.001 C234 0.001 C235 0.001

SP GND

AF OUT J5

TO SP

SP GND

J6

HV

GND

J3

HV

DIM

HORN

GND

AFO

GND

DET

GND

IN

GND

PTT

R220

100

SP1

to

EXTERNAL SPEAKER

to FAN

for

OPTIONAL CABLE

8-5	November 1998
	Part No. 001-7600-001

VHF (7610) MAIN BOARD SCHEMATIC