Jvc SRV 10 Service Manual

Page 1

JVB
SERVICE MANUAL

VIDEO CASSETTE RECORDER

SR-V10E,
SR-V10EK

SHOWVIEW
HiFi 5m;
Super VHS ET
Professiqsggsl

Note:
Most of the schematic diagrams for this model are the same as for the HR-S7950EU model. The schematic
diagram and circuit boards that are different in the case of the HR-S7950EU model are described below.

- MAIN(SYSCON) SCHEMATIC DIAGRAM page 4-57

- MAIN(MAIN TERMINAL) SCHEMATIC DIAGRAM page 4-53

- MAIN CIRCUIT BOARD page 4-55

5 PECI FICATIONS (The specifications shown pertain specifically to the model SFl-V10E.)

GENERAL
Power requirement : AC 220 V 7 240 VN, 50 Hz/60 Hz
Power consumption

Power on : 18 W

Power off :3.6 W
Temperature

0 perating : 5°C to 40"C

Storage 20C to 60C
O perating position : Horizonoal only
DimensionSIWxHxDI
: 400 mm x94 mmx 270 mm

Weight . 4 kg

Format : S7VH SNHS PAL standard

M aximum recording time
ISPI : 240 min with E7240 video cassette
lLPl :480 min with E7240 video cassette
IEPI : 720 min with E7240 video cassette

VIDEO/AUDIO

Signal system :PAL7type colour signal and CCIR
monochrome signal, 625 lines
50 fields
Recording system DA4 (DoubleAZimuth) head helical
scan system
Signa|7to7noise ratio 45 dB
Horizontal resolution

(SP/LP) 250 lines (VHS)
400 lines (S7VHS)
IEPI : 220 lines IVHSI

350 lines (S7VHS)
Frequency range :70 Hz to 10,000 Hz (Normal audio)
20 Hz to 20,000 Hz lHi7Fi audiol
input/Output : RCA connectors:
VIDEO IN X2,VIDEO OUTX 1,
AUDIO IN XZ,AUDIO OUTX 1
S7Video connectors
[N X 2, OUT X 1

TU NER/TIMER

TV channel storage capacity

Tuning system
Channel coverage

Aerial output

99 positions (+AU X position)
Frequency synthesized tuner
VHF47 MHZ 7 89 MHZ/

104 MHZ 7 300 MHZ/

302 MHZ 7 470 MHZ

UHF470 MHZ 7 862 MHZ

U H F channels 22 7 69 (Adjusoable)

Memory backup time

AC C ESSO RI ES

Provided accessories

Approx 6 months

Estimated figure based on provided
fresh battery; actual performance
may differ.

RF cable,

S7Video cable,

Audio/video cable,

Infrared remote control unit,
"R6 battery x 2,

Lithium battery CRZOZS,
ENC/RCA adapterx 2

Specifications shown are for SP mode unless othenivrse

specified.

E & 0.5 Design and specifications subiect to change Wimout

notice

This service manual is printed on 100% recycled paper.

SR-V10E, SR-V10EK V1582

No.82945
October 2002

Page 2

TABLE OF CONTENTS

Section Title

DIFFERENCE LIST
Important Safety Precautions
INSTRUCTIONS

1. DISASSEMBLY
1.1 Manually removing the cassette tape ..
1.2 Removing the major parts ..........

1.2.1 How to read the procedure table.
.2.2 Disassembly procedure .
Emergency display function .
.1 Displaying the EMG information .
.2 Clearing the EMG history ..
.3 Details of the OSD display int e
.4 EMG content description

Page

1

5 EMG detail information<1>
6 EMG detail information<2>
7 EMG detail information<3>
Service position
.1 How to set the
'g RCU mode ..
.5.1 Setting the Jig RCU mode

.5.2 Setting the User RCU mode

Mechanism service mode .

.6.1 How to set the "Mechanism serVIce mo e
.6.

M

.7.

.3
.3
.3
.3
.3
.3
.3
.4
J

1

1

2 How to exit from the "Mechanism service mode
aintenance and inspection
1 Cleaning ..
1.7.2 Lubrication
1.7.3 Suggested sen/icing schedule for main components.
1.8 Sevicing items related to video navigation ...........

1
.3
1

1

1

1

1

1

1
1.4
1
.5
1

1
.6
1

1
1.7
1

OOOOOCOLOLOLOLOLOLOC'OOOOONmmbb-bNNNA

2. MECHANISM
2.1. Before disassembling/assembling
.1 Notes.

1
1.2 Mecha p

1.3 Setting the mechanism assembling mode
1

1

.4 Layout of the main mechanism parts
.5 Disassembling procedure table ......
Replacement of the main mechanism parts
2.2.1 Cassette holder.
2.2.2 A/C head.
2.2.3 Guide arm, pinch roller arm .
2.2.4 Idler arm, idlergear 1/2
2.2.5 Main brakeIT), brake lever, tension amreel disk(S/T), Rec safety lever
2.2.6 Press lever, control cam, capstan brake assemblyloading rmtor assembly
2.2.7 Capstan motor, load gear, control plate
2.2.8 Clutch unit assembly, direct gear
2.3. Mechanism timing chart ................

2.
2.
2.
2.
2.
.2.

2

NNNNNNNIIQNNNNNNN

ocoooummmt'nbAQN-x-xAA

't

3. AD] USTMENT

3.1 Before adjustment
3.1.1 Precaution ..
3.1.2 Required test equrpments.
3.1.3 Required adjustment tools
3.1.4 Color(colour) bar signal, color(colour) bar pattern
3.1.5 Switch settings ..
3.1.6 Manual tracking m
3.

.2

3.

1.7 EVR sdjustment
Mechanism compati ty adjustment
2.1 Tension pole position
3.2.2 FM waveform linearity.
3.2.3 Height and tilt of the A/C head .
3.2.4 A/C head phase(X-value)
3.3 Electrical Adjustment .....

3

uuuuuclouuuuuuww
bbmmmNN-kAAAAAA

Section Title

Page

3.3.1 Servo circuit ......
3.3.1.1 Switching point
3.3.1.2 Slow tracking preset

3.3.2 Video circuit....
3.3.2.1 EE Y/PB Y(S-VHS/VHS

3.3.3 Audio circuit....
3.3.3.1 Audio REC FM

3.3.4 Sysoon circuit(EU/EK MODEL)
3.3.4.1 Timer clock .........

3.3.5 PAL/SECAM converter circuit(MS MODEL)
3.3.5.1 Colour difference level .
3.3.5.2 SECAM burst position ..

LL

)Ievel .

wwwwwoawwwwww
mmmmmumnurmm

4. CHARTS AND DIAGRAMS
4.1 BOARD INTERCONNECTIONS .......................
4.2 MAIN(VIDEO/N.AUD|O) SCHEMATIC DIAGRAM
4.3 MAIN(ON SCREEN) SCHEMATIC DIAGRAM .....
4.4 MAIN(SECAM) SCHEMATIC DIAGRAM [HR»86950MS/S7955MS] .
4.5 MAIN(FMA) SCHEMATIC DIAGRAM ..
4.6 MAIN(SYSCON) SCHEMATIC DIAGRA
4.7 MAIN(SWREG) SCHEMATIC DIAGRAM
4.8 MAIN(TUNER) SCHEMATIC DIAGRAM.
4.9 MAIN(FRONT) ,MINI FRONT, S-JACKAND ADV.JOG SCHEMATIC DIAGRAM
4.10 MAIN(MAIN TERMINAL) SCHEMATIC DIAGRAM ............
4.11 2D DIGITAL SCHEMATIC DIAGRAM [HR-56950EU/36955MSIS7955MS]
4.12 SDITBC (2M) SCHEMATIC DIAGRAM [HR-S7950EUIS7955EK]

4.13 TERMINAL(S-SUB) SCHEMATIC DIAGRAM.

4.14 TERMINAL(|/O) SCHEMATIC DIAGRAM
4.15 DEMODULATOR SCHEMATIC DIAGRAM .

4.16 S-P CONVERTER SCHEMATIC DIAGRAM [HR-36955M5/87955MS]
4.1

4.1

4.1

4.2

1

7 MAIN CIRCUIT BOARD ............................................
8 2D DIGITALAND 3D DIGITAL/2M CIRCUIT BOARDS
9 DEMODULATOR CIRCUIT BOARD .........................
0 SP CONVERTER CIRCUIT BOARD[HR-SG955MS/S7955MS
4.21 TERMINAL CIRCUIT BOARD ............
4.22 WAVEFORMS .......
4.23 VOLTAGE CHARTS .
4.24 REMOTE CONTROLLER SCHEMATIC DIAGRAM
4.25 FDP GRIDASSIGNMENT AND ANODE CONNECTION
4.26 CPU PIN FUNCTION .........................
4.27 SYSTEM CONTROL BLOCK DIAGRAM .
4.28 VIDEO BLOCK DIAGRAM ..
4.29 AUDIO BLOCK DIAGRAM ..
4.30 MAIN(MAIN TERMINAL) SCHEMATIC DIAGRAM [SR-V10E, SR»V10EK] .
4.31 MAIN CIRCUIT BOARD [SR-V10E, SR-V10EK]
4.32 MAIN(SYSCON) SCHEMATIC DIAGRAM [SR-V10E, SR-V10EK].. 4-57

w-ANow:Law-stoooxlwmw-uowmmdtoumw-uoooxiuww

mmbbbbbbwwwwmmwNNNNNAAAA

5. PARTS LIST
5.1 PACKING AND ACCESSORY ASSEMBLY
5.2 FINAL ASSEMBLY .........
5.3 MECHANISM ASSEMBLY
5.4 ELECTRICAL PARTS LIST ..
MAIN BOARD ASSEMBLY .
3D D/2M BOARD ASSEMBLY<05>
TERMINAL BOARD ASSEM BLY<06>
A/C HEAD BOARD ASSEMBLY<12>
DEMOD BOARD ASSEMBLY<14>
S.JACK BOARD ASSEMBLY<36>.
ADV.JOG BOARD ASSEMBLY<38>
LOADING MOTOR BOARD ASSEMBLY<55>

I
N _\

_._._._._._._.<,n<,nm mmmmmmmmmi: