JVC HR-J691U, HR-J694, HR-J695U, HR-J698U Schematics

SECTION 4

123

2.5

(5.0)

1.8

PB and REC modes (Voltage of PB and REC modes are the same)

PB mode

REC mode

CHARTS AND DIAGRAMS

NOTES OF SCHEMATIC DIAGRAM

Safety precautions The Components identified by the symbol are

critical for safety. For continued safety, replace saf ety critical components only with manufacturer's recommended parts.

1. Units of components on the schematic diagram

Unless otherwise specified.

1) All resistance values are in ohm, 1/6 W, 1/8 W (refer to parts list). Chip resistors are 1/16 W.

K: KØ (1000Ø), M: MØ (1000KØ)

2) All capacitance values are in µF, (P: PF).

3) All inductance values are in µH, (m: mH).

4) All diodes are 1SS133, MA165 or 1N4148M (refer to parts list).

2. Indications of control voltage

AUX : Active at high AUX or AUX(L) : Active at low

3. Interpreting Connector indications

1 2

Removable connector

3

1 2

Wire soldered directly on board

3

4) Indication on schematic diagram Voltage Indications for REC and PB mode on the schematic diagram are as shown below.

Note: If the voltages are not indicated on the schematic

diagram, refer to the voltage charts.

5. Waveform measurement

1) Video circuits REC : Colour bar signal in SP mode, normal VHS mode PB : Alignment tape, colour bar SP mode, normal VHS

mode

2) Audio circuits REC : 1KHz, –8 dBs sine wave signal in SP mode, normal

VHS mode

PB : REC then playback it

3) Movie Camera circuits Measured using a correctly illuminated gray scale or colour bar test chatrs in the E-E mode

4) Indication on schematic diagram Waveform indications on the schematic diagram are as shown below.

24

22201816

Measurement point

1 2 3

1

2

3

4

4. Voltage measurement

1) Video circuits REC : Colour bar signal in SP mode, normal VHS mode PB : Alignment tape, colour bar SP mode, normal VHS

mode

— : Unmeasurable or unnecessary to measure

2) Audio circuits REC : 1KHz, –8 dBs sine wave signal in SP mode, Nor-

mal VHS mode

PB : REC then playback it

3) Movie Camera circuits Measured using a correctly illuminated gray scale or colour

S40884-03

bar test charts in the E-E mode

Non-removable Board connector

Board to Board

Connected pattern on board The arrows indicate signal path

C329

C330

0.1/50

R344 47K

R343 18K

0.1/50 C331

11/10

R345 10K

5) Waveform indications

Waveform number

WF25

REC/PB 1.2 Vp-p

50 mV/2 msec/DIV

Oscilloscope Volts and Time/Division, Probe 10 : 1

Mode : REC or PB modes

WF25

R346 15K

ALC OUT

Waveform number

Waveform name or measurement point

Level : 1.2 Vp-p

4-1

6. Signal path Symbols

R216

OPEN

The arrows indicate the signal path as follows.

Playback signal path Playback and recording signal path Recording signal path

(including E-E signal path) Capstan servo path

CIRCUIT BOARD NOTES

1. Foil and Component sides

1) Foil side (B side) : Parts on the foil side seen from foil face (pattern face) are indicated.

2) Component side (A side) : Parts on the component side seen from component face (parts face) indicated.

Drum servo path

(Example)

R-Y

Playback R-Y signal path

Y

Recording Y signal path

7. Indication of the parts for adjustments

The parts for the adjustments are surrounded with the circle as shown below.

8. Indication of the parts not mounted on the circuit board

“OPEN” is indicated by the parts not mounted on the circuit board.

2. Parts location guides

Parts location are indicated by guide scale on the circuit board.

REF No. LOCATION

Category: IC

Horizontal “A” zone Vertical “6” zone

(A : Component side)

(D : Discrete component)

B : Foil side

C : Chip component

IC

IC101 B C 6A

Note:

For general information in service manual, please refer to the Service Manual of GENERAL INFORMA TION Edition 4 No. 82054D (January 1994).

4-2

S40884-03

The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.

Note :

4.1 BOARD INTERCONNECTIONS

When replacing the parts,refer to the Parts List.

5

AC INPUT

FRONT AUDIO

REAR VIDEO REAR AUDIO

OUT

OUT[R]

OUT[L]

ANT IN

ANT OUT

FRONT VIDEO

IN IN[L]

IN[R]

IF OUTTPAUDIO OUT

SIF OUT

TUNER

AFT

VIDEO OUT

#

R.PAUSE

FW3001

FW7104 #

R.PAUSE

###

J7105

PAUSE/COMP

GND

PAUSE/COMP

99

LIVE

NEUTRAL

OPEN

CN3010

SBi0_FRSIS

SBo0_FRSIS

P20

VDD

FLASH ROM WRITER

GND

SXi

iRQ0

OPEN

4

R/P

A.E.

CTL

1 2 A/C HEAD

F.E.

FULL ERASE HEAD

#

CN7003

KEY OUT

3

99

R.PAUSE

b5/

JSB

GND

JSA

#

CN7004

b5/

KEY OUT

JSB

GND

JSA

#

8

3

ADV.JOG

CN2001 REC

PLAY ERASE GND (AUDIO) CTL[-] CTL[+]

CN2002 FULL ERASE

GND

# CN7001

JSA GND JSB

KEY_OUT

b5/

OPEN

CN1

LP/EP_CH1

LP/EP_CH2

4 1 U.DRUM

TU6001 #

SP_CH1

MATSUSHITA

NTSC

SP_CH2

NC(GND)

FMA_CH1

VIDEO IN

NC(GND)

AUDIO IN

CH SW

MOD B(SW5V)

CONV.CTL[H]

(RF AGC)

(BT)ASSCL

MAIN

3

0

VIDEO/N.AUDIO,FMA/DEMOD,SW.REG,SYSCON,TUNER,FRONT,TERMINAL

FMA_CH2

LOCK(L)

SDA

NC(5V)

MB(SW5V)

TU(30V)

CN3001

C.FG_IN

CAP.M_Vcc

IF OUT

Vcc5V

IF IN

CAP.M_F/R

NC

LM_VCTL

M_GND

M

AUDIO OUT

(SIF OUT)

AFT

OPEN

CAP.M_CTL

S_GND

Vcc12

DRUM MOTOR

NC(OPEN)

VIDEO OUT

LM_F/R/S

DRUM_PG/FG

/57CAP MDA

ALPS/LG/SANYO

DRUM_VCTL

NTSC

AUDIO IN

CH SW

MOD B(SW5V)

CONV.CTL[H]

VIDEO IN

(RF AGC)NCAS

CN3004

ROTARY ENCODER

SCL

SDANCMB(SW5V)

LSB

LSA

GND

LSC

LOCK(L)

LSD

TU(30V)

2

LP/EP

CH1 CH1 CH1

FMA

LP/EPSPSP

CH2 CH2 CH2

FMA

57

41

38

1

12

3

NO NAME

CAP MDA/DRUM MOTOR

U.DRUM

ADV. JOG

A/C HEAD

MAIN

4-3 4-4

#

For future models

p10401001a_rev0

HGFEDCBA

5

TO FMA/DEMOD

4

TO FMA/DEMOD

3

LP/EP_CH2

LP/EP_CH1

2

4.2 MAIN (VIDEO/N.AUDIO) SCHEMATIC DIAGRAM

0

3

MAIN(VIDEO/N.AUDIO)

Fsc

NA_PB

NA_REC RF_AUDIO F.AUDIO[R] F.AUDIO[L]

LINE_OUT[R]

LINE_OUT[L]

GND

TO TERMINAL

LINE_OUT[L] LINE_OUT[R]

F.AUDIO[L]

F.AUDIO[R]

GND

FRONT_V_IN

TO TUNER

TO SW.REG

TO DRUM

FMA_CH2

FMA_CH1

SP_CH2

SP_CH1

TO SYSCON

TO A/C HEAD

RF_AUDIO

TU_VIDEO

TO OSD

V_TO_OSD

SW5V

SW12V

FMA_CH1

FMA_COM

FMA_CH2

CTL[+]

CTL[-]

CN2001

ERASE

GND(AUDIO)

CTL[-]

CTL[+]

CN2002

FE

GND

CN1

REC

PLAY

D1

D2

OPEN

R78

1K

C1

0.1µ

C2

0.1µ C6

0.01

L1

10µ

C3

0.1µ

C4

C5 47 /16

470p

0.1

C7

C8

T2051 PELN0832 PELN0954

QQR0002-001

R2053

C2051

330p 4.7K

MY

C2052

0.082

The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.

Note :

When replacing the parts,refer to the Parts List.

R2007

12k

R2010

12k

C2004

C2003 47 1 4.7

OPEN

L2001 SHORT

/6.3

A.Vcc

MONO-DET

A.MUTE

Comb ctl

BDL GND

COMP

PRE/REC GND

SP2

SP

COMMON

PRE/REC

AMP

SP1

PRE/REC VCC

LP/EP2

LP/EP

COMMON

PRE/REC

LP/EP1

ENV OUT

R77

10k

TP111 D.FF

R2057 47k

Q2052 2SB1218/QR/ 2SA1576A/QR/ 2PA1576/R/

Q2051

2SC4081/QRS/

2SD1819A/QRS/

2PC4081/R/

0.0047

C2053

12k

R2054

R2055

C2054C2055

3.3

0.02210

/25

R2056

R2059 47k

Q2054 2SA1576A/QR/ 2SB1218A/QR/ 2PA1576/R/

82

R2058 18k

R2060 18k

Q2053 DTC144WUA PDTC144WU UN521E RN1309

Q2055 DTC144WUA PDTC144WU UN521E RN1309

Q2003 DTA144WUA PDTA144WU UN511E RN2309

R2018

4.7k

R2019

4.7k

C2005

C2007 22

/16

C2009

0.001 R2016

47k R2017

15k

Q2001 2SC4081/QRS/

2SD1819A/QRS/ 2PC4081/R/

Q2002 2SC4081/QRS/

2SD1819A/QRS/ 2PC4081/R/

4.7

/50

R2014 220k

C2006

0.012

C2008

/50

IC1 JCP8041-NVA

0.0015

4.7

C2010

C2011

R2013

6.8k

/50

TP106 PB FM

R2015

220

4.7

D.FF

DET

A.GND

REC

TANK

DC PB

R104

Q38

6.8K

R93 1K

B3

OPEN

R90 470

AMP

42PIN[L]

2SC4081/QRS/-X 2PC4081/R/-X

MUTE

VCA

SP

CARREA OFFSET

MAIN

EMPHA.

INT

W.C./D.C

D17 CTL

EXT

42PIN[L]

/50

4.7

R1

6.8k

C2012

C10

150p

C15 1

R2

1.5k

R

P

MAIN

DE EMPH.

C12

C11 C14

33p

0.1 0.1

R3

6.8k

2M LPF

P

R

CARR./DEV.ADJ

SECAM

629TRAP

LPF MOD

S-DET

D1*D18

TRAP

LPF

D1*D18

P

ACC

R

COMP

HPF

SEP

ET FBC ALC

ET

LPF

Y

YNR

BDL

DO DO

R

P

LPF

C136 OPEN

C16

0.1

C2002 C2001

/50 /50

INPUT_SEL

REC LEV.

R

CTL

P

SECAM SECAM

CTL.P.TRAP

Fh TRAP

P R

SUB LPF DE MOD D.LIM.

R P

SQPB

EQ

N.L.

SQPB

P

Y-LPF

R

&REC

-10dB

CLAMPCLAMP

Y GND

C62

0.1

C.K.

BPF

D.E. N.C.

FM AGC

C17

3.3 /50

PILOT

ADD

DET

DO DET

P.C .

R P

CH4

-10dB -10dB

MAIN

CONV.1

PP

LEVEL DET1 LEVEL DET2

EMPH./DE EMPH.

SQPB DL

SQPB SQPB

SB GAIN

P

R

AGC DET

AGC

PB ALC

CH1

CH2CH3

C9

0.01

GND

HIFI

DL

C-LPF

MAIN

CONV.2

RR

BURST

P EQ

G EQ

NT on PAL

CNV.

C.K.

WHITE

LIM. CLEAR SYNC

ALC FBC

-10dB SYNC SEP

Y VCC

C23

0.01

C22

C19

C21C20

47

2.2

0.11

/50

/6.3

/50

R2003 100

10

/16

C40

NC

BAND_GAP

HIFI

BDL VCC

P

VCA

R

CCD LPF

MESECAM

DET

1/2

PHASE SW.

DOWN CONV.

C.KILLER

ID DET

APC SW

DISCRI

PULSE GEN.

4PHASE GEN.

D4

SQUELCH

CLAMP

D4

6dB

BDL

C-SQUELCH

BDL DET

C

DATA

IIC LOGIC

CLK

LPF2FscVCO

D5 D5

C GND

Fh LOCK CTL

2Fsc OUT CR DET

X'tal

VCO/XO

ACC DET

REC AFC

PB APC

C VCC

REC APC

1/2

2FL VCO

KILLER DET OUT

6dB

D1*D24

R66 OPEN

L3

C24

0.1

C2014 OPEN

1K

R9

1K

R8

C36

4.7

/25

0.1

C34

C32

0.01

R

P

12µ

L11

C25

5p

10µ

Q22 2SC4081/QRS 2PC4081/R/

R49 560

C39

0.01 47

C38

/6.3

10µ

L5

C144

0.001 C37

47

2.2K

R118

C35

0.033

C120

C26

0.01

L4 10µ

Q32 OPEN

X2 QAX0575-001

QAX0682-001 QAX0690-001 QAX0575-001

1µ

/50

B2

OPEN

/6.3

2.2

820

R7

C31

27k

R6

C29

C27

B1 SHORT

/50

C33

47

/6.3

0.47

C30

/50

4700p

3.3

C28

/50

0.022

TO SYSCON

D.FF VIDEO_ENV N.REC_ST[H] N.REC[H] I2C_DATA_A/V I2C_CLK_A/V A.MUTE[H] V.PULSE SB_GAIN AGC_CTL

1

C51

/50

1

p10380001a_rev1

4-5 4-6

HGFEDCBA

4.3 MAIN (SYSCON) SCHEMATIC DIAGRAM

The Parts Number,value and rated voltage etc. in the Schematic Diagram are for references only.

Note :

When replacing the parts,refer to the Parts List.

03

MAIN[SYSCON]

5

4

3

2

TO SW.REG

AL5.8V_SYS

P.CTL[H]

TO FRONT

REC_LINK

TO

TUNER

TU_MUTE[H]

I2C_DATA

I2C_CLK

CH_SW

CONV_CTL[H]

TO FLASH WRITER CN3010

SBIO_FRSIS

SBoO_FRSIS

OPEN

TO FMA/DEMOD

A.ENV/ND[L]

A.MUTE[H]

H.REC_ST[H]

I2C_DATA

I2C_CLK

SW12V

GND[M]

GND

M12V

48V

SW5V

GND

R3241

R3240

OPEN

RC KEY1 KEY2

JSB JSA

DIG1 DIG2 DIG3 DIG4 DIG5

D_A D_B D_C D_D D_E D_F D_G

GND

AL5V

AFC

P20

VDD

GND

SXi

IRQO

D3002

#

R3210

R3211

18k

18K

R3209

180

1/4W

C3049

0.01

C3007

OPEN

#

Q3001

D3001

PTZ-NV16A

LNB2301L01VI

START SENSOR

LED

A.FF

C3052

0.01

C3008 OPEN

Q3002 PTZ-NV16A END SENSOR

R3212 R3214 120 120

PC3001 PC3002 RPI-304 RPI-304

REEL SENSOR REEL SENSOR

SUPPLY TAKE UP

1SS133

R3216 470k

S3001 REC.SAFE.SW QSW0602-004

R3219 10K

R3213 18k

R3215 18k

R3217 330k

C3041

C3042

100P

IC3003 OPEN

GND

OPEN

R3244

330

C3022

Q3007

2SC4081/QRS

Q4001 UN5211

R3018

R4006 R4004

VDDNC OUT

MTZ3.9B

680

R3243

R3114

C4011

0.22

C3004

100p

SP_FG TU_FG

NC

R.PAUSE/COMP_IN

RC D_A D_B D_C D_D

D_E D_F D_G NC NC N_REC[H]

R3017

D3016

/50

C3011

4.7

AGC_CTL

1k

I2C_DATA_A/V

1k

I2C_CLK_A/V NC NC SB GAIN REC_SAFETY

4.7k

D.FF

OPEN

V.PULSE

RESET

470

5.6k

R3222

R3220

OPEN

C3013

Q3006

0.0022

OPEN

C3015

C3070

R3245

6.8K

2SC4081/QRS

DIG4

DIG5

REC_LINK_LED

A.FF

N.REC_ST[H]

H.REC_ST[H]NCNC

DIG3

DIG1

DIG2

I2C_DATA

1k

R3031

R3032

4.7k

R3094

R3093

R3092

R3091

LSB

LSA

LSD

LSC

IC3001 MN101D06GJC

I2C_CLK/TEST

CAP_CTL_V

DRUM_CTL_V

A.MUTE[H]

2.2K

OPEN

D4003

R4001

C3036

C3016

POWER_DET

VDD

R3042

OPEN

C3035

R3223

1M

R3224

18p

KEY2

X_OUT

0.022

/6.3 100

100

C3017

JSB

KEY1

X_IN

VSS

27p

JSA

START_SENSOR

CTL_AMP_OUT

XC_IN

XC_OUT

R3242

OPEN

R3225

OPEN

C3018

C3019

##

COMP_OUT

VIDEO_ENV

SW_PT_ADJ

CLK_SEL

CH_SW

TU_MUTE[H]

0

C3020

##

OPEN

LED

PROTECT

A.ENV/ND[L]

END_SENSOR

AFC/JUST_CLK

AMP_VREF_IN

AMP_VREF_OUT

C.FG_AMP_OUT

EEPROM_DET

MODEL_OPTION3 MODEL_OPTION2

CAP.M_F/R

LM_F/R/S

MODEL_OPTION1

START_SENSOR_DEL

CTL_GAIN

COV_CTL[H]

P20

VIDEO_OSD_OUT

VSS2

V_TO_OSD

3.3k

100p

R201

C205

X3001

14.32MHz QAX0526-001

X3002

##

32kHz QAX0444-001

C4007

AMP_C

C.FG_IN

D.FG_IN

P.CTL[H]

FSCLPF

AFCLPF

SYN_IN

L203

R4026 0

VR4028 SW PT ADJ

10K

R4027 0

TP4001 CTL.P

0.01

CTL[-] CTL[+]

AVCC

AVSS

NC

FSCI

AFCC VDD2

C203

1

/50

R4018

0

C4022

OPENOPEN

C4006

0

R4003

R4021

0

C4012

OPEN

WP

SCL

A1A2VSS

R3226 10k

SDA

# IC3004

OPEN

R4024

OPEN

R4019

1k

C4019

/6.3

C4010

47

C4008

OPEN

C4014

100p

R3140

#

R3139

#

R3138

#

R3137

#

R3136

0

000

R3135

R3134

R3133

R3132

#####

C4002

/50

0.01

1

10k 10k

10k

L201

0

R3131

C3045 C3043

C3053

0.01

R4002

5.6k

OPEN OPEN

C4009

0.001 R4012

15k

R4010

470

R4011

470

C4004 33

/10

2.2k

R202

1

C207

C202

C201 47

/6.3

0.022

4.7

R3227

#

C3023

10k

1

C3055 OPEN

VCCA0

#

CP3001 NMFZ012-1R0X-M

R3254 OPEN

R3255 OPEN

R3234 OPEN

Q3004 OPEN

R3232

D3006 OPEN

OPEN

R3233 OPEN

## ##

C3030 C3029

220 0.01

/6.3

B3001

## ##

R3237

4.7k 4.7k

CP3002

#

QMFZ050-1R5X-E

CP

#

CP4001

SHORT

CP

CP4002

#

SHORT

C4016

OPEN

R4022 OPEN

Q4002

2SD1819A/QRS

D3005 11ES2

## ##

C3024 C3025

D3004 OPEN

/6.3

47 0.01

C3028 OPEN

D3007 OPEN

R3236 OPEN

R3205

R3206 R3207

R3238

10K

10K 10K

R3252

15K

L4001 SHORT /16

C4017 OPEN

Q3005 OPEN

C3071

R3253

10K

C4031 33

R3208 10K

33

/16

C3056

0.1

C4001

0.1

TO CAP_MDA CN3001

C.FG_IN CAP.M_Vcc Vcc5V CAP.M_F/R LM_VCTL M_GND S_GND Vcc12 CAP.M_CTL LM_F/R/S DRUM_PG/FG DRUM_VCTL

TO R.PAUSE

#

FW3001

PAUSE/COMP GND

OPEN

TO ROTARY ENCODER

JS3001

GND LSA LSB LSC LSD

AGC_CTL VIDEO_ENV CTL[-] CTL[+]

TO VIDEO/N.AUDIO

V_TO_OSD I2C_CLK_A/V I2C_DATA_A/V GND

TO TERMINAL

V_FROM_OSD A.MUTE[H]

TO VIDEO/N.AUDIO ,FMA/DEMOD

N.REC[H] N.REC_ST[H] SB_GAIN

TO VIDEO/N.AUDIO

V.PULSE D.FF

##MARKED SYMBOLS ARE NOT MOUNTED CP3002 is OR part of CP3001.

1

CP4002 is OR part of CP4001.

# DIFFERENCE TABLE

With EEPROM No EEPROM

With Start Sensor No Start Sensor

IC3004, C3023

Q3001, R3210

: Used : Not used

R3131 R3136

R3132 R3137

Max. 8 models

J691U, J691UC, J694U J698UC(with A/B code) J695UC(with child lock) Model_4 Model_5 Model_6 Model_7 Model_8

0

0 1

0

1

0

1

0

1

1 1

1

M_OPT1 R3135R3139 R3138

0 1 0 1 0 1 0 1

R3134 R3133R3140M_OPT2M_OPT3

p10379001a_rev0.1

4-7 4-8

HGFEDCBA