JVC KS-FX725R service manual Standard schematic diagrams, Receiver & System control section

KS-FX725R

Standard schematic diagrams

Receiver & System control section

5

R33
1k	C32
R32
1.5k	0.082
	C31

TU1

QAU0260-001

J1

QNB0100-002

	L1
	4.7u
	D5	1SS133-T2	D6	1SS133-T2
R34	C33		150P	C43	0.47/50
	1k
R44	1k
R43
10k
R42	C42				C2	47p
1k	2.2/50
	C41					Q2

	R12	0
				Q9	DTC114EKA-X	C8 47p
C9	220/10	R11	22k

0.047

C3	2SA1037AK/RS/-X
	Q3
	R5	47k
	X

	C5	1/50	10k		R81
	C6	1/50	10k		R82
		C7							R83 15k	1200p
0.015 C81	0.015 C82	0.1/50			Q7	2SC2412K/R/-X		Q6 2SC2412K/R/-X
		2SC2412K/R/-X								C83
		Q8
	DTA114EKA-X Q4	R8 4.7k		R9	4.7k	R10	4.7k			TU.L
		0.1			DTA114EKA-X Q10				C165	1/50
		C4

15k	1200p
R84	C84
	CH.L
C166	2.2/50

RR

RL

TU.R

TU.L

R168	2.2k
						FR
						FL
R167	22k
C172	0.0082	C173	0.15	C181	2.2/50	FL
				C183	2.2/50	RL

R307 R308

R306 R309

D353 1SS355-X

1SS355-X

LA4743K

IC301

J321

QNN0175-001

47/16

22/16

C321

C302

C327

150p

R301

C322

150p

27k

C308

2.2/50

C309

R302

2.2/50

390p

390p

27k

100

100

C303

C304

R321

R341

1k

C301

4.7/25

0.1

4.7/25

0.1

150P

R331

R351

R352

R342

390p

390p

R305

C305

C307

C306

C911

100

100

1k

1k

R311

C318

C313

C314

27k

2.2/50

R312

27k

2.2/50

R332

R322

1k

1k

C319

R353

Q351

2SD1048/6-7/-X

D343

2.2k

1SS355-X

R343

-7/-X

Q341

2.2k

C323 0.1

C324 0.1

C325 0.1

C326 0.1

4

3

2

1

CP401 QGB1214J1-18S

CJ601

VMC0334-001

-

0.0056 C178

1SS355-X R323

	0.082
	2SC3661-X
	Q32
	Q31	2SC2412K/R/-X
2SC3661-X	R31 1k

2SA1037AK/RS/-X

0.001 2SC2412K/R/-X

				R3
Q42		R2	4.7k	47k
	1.5k
Q41	R41	Q1
		DTC114EKA-X
				D7

	D3	1SS355
1SS355-X	D2	1SS355-X
		12

D4	1SS355-X
Q5
-X

R162	C164
	1/50
0
TAPE.L
R164	0

C174	0.22	C176	0.033	270
				R173	SDA
					PCNT
IC161
TEA6320T-X

47k 47k

47k 47k

D333

R333	Q331			2SD1048/6
2.2k			2.2k
2SD1048/6-7/-X		D323	Q321		0.047
					C904
			2SD1048/6-7/-X
					2200/16
					C903
					1N5401-TU-15
					D901

R748	24k
	2SC2412K/R/-X	Q701

				C1
				100/16
				D1
				MTZJ9.1C-T2
			R1	33
SW5V	FMEO	AMEO	FM/AM	10V

R4	3.3k					R6
	SK/ST	SM	MONO	SD/ST	SEEK/STOP	9V

DTA114EKA

FMOSC AFCK

	R163	0
	R161		C163
TAPE.R	0
			1/50
TU.R		C162	1/50
		C161	2.2/50
CH.R

C167

10V 9V SM

STANDBY

TAPEIN MODE

SUB02

SUB01

REEL

MS

DOLBY FR

FFREW

C77

C76

C75

47p

X71

C74

82p

47/16

0.01

QAX0263-001Z R73	R72	2.2k
	2.2k

RDSCK

C72	0.022
560P
	C71
	C73
	2.2/50
R71	2.2k
IC71
SAA6579T-X

C78

0.01

47/16 C168

R172

270

C170 C171

SCL

9V

0.150.22

C184

2.2/50

RR

C175

0.033

C177

C182

2.2/50

FR

C169

0.0082

C179

0.082

R171

100/16

R165

22k

R166

0.0056

C180

100/16

10

2.2k

MUTE

D161

R169

330k

1SS355-X

330k

LMETER

R170

1SS355-X

D162

47k

47k

47k

47k

R747

R746

R740

R741

STAGE0 R742

56k

R743

47k

R745

47k

9V

Q976

UN2211-X

POWER

27k R977

12k

R978

Q977 2SA1037AK/RS/-X

R782

47k

D782

R781	4.7k	D781 MTZJ11CT1-	C781	100/16	Q781
					DTA114EKA-X
	Q784
1SS355-X	DTC114EKA-X
D783					DTA114EKA-X Q782	2.2
1SS355-X						C910
				220/10	C782
			IC901			10k
			HA13164
						R902

L901	QQR0703-001
	0.047	10/16	47
	C902	C901	R901
	QMFZ047-100-T	F1

CP901 QNZ0112-001

MOTOR

R706	10k
R701	270	DETACH
R702	270	KEY0
R703	270	KEY1

KEY2

LCDCE

LCDCK

R704 0 LCDDA

R705 0 ENC1

ENC2

R751

10k

R752

10k

C717

0.047

D701	D702	D703	D704	D705	D706	D707	D708	D709
UDZS5.6-X	UDZS5.6-X	UDZS5.6-X	UDZS5.6-X	UDZS5.6-X	UDZS5.6-X	UDZS5.6-X	UDZS5.6-X	UDZS5.6-X

L2 47u C55

R59

470

0.47/50 2SC2412K/R/-X

R58

15k		R55	10k		R53	47k
Q52		C54
		0.1
			Q51
	2SC2412K/R/-X
R57	10k	0.0047 C53	2.2k	R56	R54 47k	DTC114EKA-X

TAPE.L

TAPE.R

	C52
	0.01
47k	R60	330P
Q53		C51

ENC1

ENC2

DETACH

RDSCK RDSDA ACCDET MODE MOTOR MS SUB01 SUB02 STANDBY POWER TELMUTE PCNT

47k	47k	47k	47k	47k	47k	47k
R732	R733	R734	R735	R736	R737	R738

C709

0.1

R731

10k

R709 0

C708 0.1

47K	R750	C707	X701	R730	390
		27P		QAX0406-002Z
		C706
		27P

MUTE

TAPEIN FFREW REEL SDA SCL DOLBY FR

IC701

UPD178018AGC623

			R976	100k
		ACCDET
		9V
		10V
4.7k	R707	PCNT
	R708	SW5V
4.7k
	STAGE0
	SD/ST	R711	47k
	FMEO
	AMEO
	R712		C702
47k	FMOSC
			0.1
C701		TELMUTE
	0.001
R713	SEEK/STOP			0.001
10k	FM/AM
	MONO
	AFCK			C713
	SK/ST

L903 47u L902 47u

C703

220/10

C714330P

R891

UN2211-X

Q891

Q902 2SA1855/RST/-T

47k	R907
DTC114EKA-X	1k	R906
	Q901

47k	R892	1k	1SS355-X
D891	1SS355-X		D892
	C891		0.1

D902

1SS355-X

		R905
		10k
				18k
C909	2200/6.3	220/10	C908	R904

4.7k R910

CRS03-W

D982

1/50	0.1/50	4.7k	100/16		C982	CRS03-W
C907	C905	R903		C906	10/16	D981	C981	0.1

R806	10k	JBUSSI	0.1	R729
R807		C705
100k		JBUSSO		47k

JBUSIO

R808

R805

100k

KEY0

R728

4.7k

100k

KEY1

R718

10k

R727

4.7k

R809

R719

10k

100

KEY2

C704

100/6.3

R726

4.7k

R720

10k

JBUSSCK

R721

10k

R722

10k

CH.R

330k

R804 22k

R723

4.7k

R810

IC801

R803

LCDCE

R725

4.7k

HD74HC126FP-X

LCDDA

R724

4.7k

CH.L

100

330k

100k

LCDCK

J801

C801

0.047

R802

R801

QNZ0095-001

C802

120p

4.7k	4.7k	4.7k	4.7k
R717	R716	R715	R714
JBUSIO	JBUSSI	JBUSSO	JBUSSCK

		LMETER
		D242	C243
				0.1
	1SS355-X
C244 0.1	R247 39k	D241	1SS355-X 47/10	Q241 C242 2SC2412K/R/-X

R243

12k

R246 15k

FM Radio signal / Radio main signal

AM Radio signal

CD signal

Cassette signal

Front signal

Rear signal

Parts are safety assurance parts. When replacing those parts make sure to use the specified one.

ABCD

E

F

G

2-3