Jvc Sr-vs30u User manual

SERVICE MANUAL

No.82909

March 2002

Mini DV/S-VHS VIDEO CASSETTE RECORDER

SPECIFICATIONS

This service manual is printed on 100% recycled paper.

SR-VS30U

SR-VS30U V14SD1

123

456

789

T W

DV S-VHS

POWER

TV/VCRA/B DISPLAY

ENTER/OSD

A.MONITOR

VCR TV CABLE/DBS

CANCEL

TIMER

START STOP DATE CH

C. RESET

DBS DAILY(M-F)

AUX

WEEKLY

PROG

EXPRESS PROGRAMMING

PROG

CHECK

SP/LP

SP/EP

PLAY

REW

REC

STOP

PAUSE

TV CH +

TV CH

VOL

JOG/

SHUTTLE

S-VHS REC

DUB

S-VHS

CH – / +

PUSH / TURN

24HR

QUICK

PROGRAM

PULL-OPEN PULL-OPEN

REW FF

PAUSEPLAYSTOP

EJECT

POWER EJECT

GENERAL

Power requirement : AC 120 V

, 60 Hz

Power consumption

Power on : 35 W

Power off : 4.4 W

Temperature

Operating : 5°C to 40°C (41°F to 104°F)

Storage : –20°C to 60°C (–4°F to140°F)

Operating position : Horizontal only

Dimensions (WxHxD)

: 435 mm x 106 mm x 380 mm

(17-

” x 4-

” x 15”)

Weight : 5.1 kg

(11.2 lbs)

Input/Output : RCA connectors:

IN x 2, OUT x 2

S-Video connectors:

IN x 2, OUT x 2

DV connector:

IN/OUT x 1 (4-pin, IEEE1394

conformity, digital input/output)

VHS DECK VIDEO/AUDIO

Signal system : NTSC-type color signal and EIA

monochrome signal, 525 lines/

60 fields

Recording system : DA4 (Double Azimuth) head helical

scan system

Format : S-VHS/VHS NTSC standard

Signal-to-noise ratio: 45 dB

Horizontal resolution

: 230 lines (VHS)

400 lines (S-VHS)

Frequency range : 70 Hz to 10,000 Hz (Normal audio)

20 Hz to 20,000 Hz (Hi-Fi audio)

Maximum recording time

(SP) : 210 min. with ST-210 video cassette

(EP) : 630 min. with ST-210 video cassette

DV DECK VIDEO/AUDIO

Signal system : NTSC-type colour signal, 525 lines

60 fields

Recording system : Digital Component Recording

Format : DV format (SD mode)

Cassette : Mini DV Cassette

Maximum recording time

(SP) : 80 min. with M-DV80ME cassette

(LP) : 120 min. with M-DV80ME cassette

Audio recording system

: PCM 48 kHz, 16 bit (2 ch)/

32 kHz, 12 bit (4 ch)

TUNER

Tuning system : Frequency synthesized tuner

Channel coverage

VHF : Channels 2–13

UHF : Channels 14–69

CATV : 113 Channels

TIMER

Clock reference : Quartz

Program capacity : 1-year programmable timer/

6 programs each on the VHS and

DV deck

Memory backup time

: Approx. 10 min.

ACCESSORIES

Provided accessories

: RF cable (F-type),

BNC/RCA adapter x 2,

Audio/Video cable,

S-Video cable (4-pin),

Controller,

Infrared remote control unit,

“AA” battery x 2

Specifications shown are for SP mode unless otherwise specified.

E.& O.E. Design and specifications subject to change without

notice.

This equipment has been tested and found to comply with

the limits for a Class B digital device, pursuant to Part 15 of

the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference in a

residential installation. This equipment generates, uses, and

can radiate radio frequency energy and, if not installed and

used in accordance with the instructions, may cause harmful

interference to radio communications. However, there is no

guarantee that interference will not occur in a particular

installation. If this equipment does cause harmful

interference to radio or television reception, which can be

determined by turning the equipment off and on, the user is

encouraged to try to correct the interference by one or more

of the following measures:

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and

receiver.

Connect the equipment into an outlet on a circuit

different from that to which the receiver is connected.

Consult the dealer or an experienced radio/TV

technician for help.

TABLE OF CONTENTS

Section Title Page Section Title Page

Important Safety Precautions

INSTRUCTIONS

1. DISASSEMBLY

1.1 HOW TO REMOVE THE MAJOR PARTS ........................................1-1

1.1.1 Introduction ..................................................................................1-1

1.2 HOW TO READ THE DISASSEMBLYAND ASSEMBLY..................1-1

1.3 DISCONNECTION OF CONNECTORS (WIRES) ............................1-1

1.4 HOW TO REMOVE THE MAJOR PARTS <COM section> ..............1-2

1.4.1 Disassembly flow chart ................................................................1-2

1.4.2 Disassembly/assembly method <COM section> .........................1-2

1.5 HOW TO REMOVE THE MAJOR PARTS <VHS section> ...............1-4

1.5.1 Disassembly flow chart ................................................................1-4

1.5.2 DIsassembly/assembly method <VHS section> ..........................1-4

1.6 HOW TO REMOVE THE MAJOR PARTS <DV section>..................1-6

1.6.1 Disassembly flow chart ................................................................1-6

1.6.2 Disassembly/assembly method <DV section>.............................1-6

1.7 CONNECTION ..................................................................................1-8

1.8 SERVICE POSITIONS....................................................................1-10

1.8.1 Requirement PATCH CORDS ....................................................1-10

1.8.2 Service position <VHS SIDE>....................................................1-10

1.8.3 Service position <DV FOIL SIDE> .............................................1-10

1.8.4 Service position <DV COMPONENT SIDE>.............................. 1-11

1.9 Jig RCU mode................................................................................. 1-11

1.9.1 Setting the Jig RCU mode ......................................................... 1-11

1.9.2 Setting the User RCU mode ...................................................... 1-11

1.10 MECHANISM SERVICE MODE ...................................................1-12

1.10.1 How to set the “MECHANISM SERVICE MODE” ....................1-12

1.11 EMERGENCY DISPLAY FUNCTION............................................1-13

1.11.1 Displaying the emergency information .....................................1-13

1.11.2 Clearing the emergency history ...............................................1-13

1.11.3 Emergency content description ................................................1-14

1.11.4 Emergency detail information <1> ...........................................1-15

1.11.5 Emergency detail information <2> ...........................................1-16

2. MECHANISM ADJUSTMENT (VHS)

2.1 BEFORE STARTING REPAIR AND ADJUSTMENT .........................2-1

2.1.1 Precautions ..................................................................................2-1

2.1.2 Checking for Proper Mechanical Operations ...............................2-1

2.1.3 Manually Removing the Cassette Tape .......................................2-1

2.1.4 Jigs and Tools Required for Adjustment.......................................2-2

2.1.5 Maintenance and Inspection ........................................................2-3

2.2 REPLACEMENT OF MAJOR PARTS...............................................2-6

2.2.1 Before Starting Disassembling

(Phase matching between mechanical parts)...............................2-6

2.2.2 How to Set the Mechanism Assembling Mode.............................2-6

2.2.3 Cassette HolderAssembly ...........................................................2-6

2.2.4 Pinch Roller Arm Assembly ..........................................................2-8

2.2.5 Guide Arm Assembly and Press Lever Assembly ........................2-8

2.2.6 Audio Control Head ......................................................................2-8

2.2.7 Loading Motor ..............................................................................2-8

2.2.8 Capstan Motor .............................................................................2-9

2.2.9 Pole Base Assembly (supply or take-up side)..............................2-9

2.2.10 Rotary Encoder ........................................................................2-10

2.2.11 Clutch Unit................................................................................2-10

2.2.12 Change LeverAssembly, Direct Gear, Clutch Gear

and Coupling Gear....................................................................2-10

2.2.13 Link Lever ................................................................................ 2-11

2.2.14 Cassette Gear, Control Cam and Worm Gear ......................... 2-11

2.2.15 Control Plate ............................................................................2-11

2.2.16 Loading Arm Gear (supply or take-up side)

and Loading Arm Gear Shaft ....................................................2-12

2.2.17

Take-up Lever, Take-up Head and Control Plate Guide ..................

2-13

2.2.18 Capstan BrakeAssembly .........................................................2-13

2.2.19 Sub Brake Assembly (take-up side).........................................2-13

2.2.20 Main Brake Assembly (take-up side),

Reel Disk (take-up side)

and Main Brake Assembly (supply side) ...................................2-13

2.2.21 Tension Brake Assembly, Reel Disk (supply side)

and Tension Arm Assembly.......................................................2-14

2.2.22 Idler Lever, Idler ArmAssembly ...............................................2-14

2.2.23 Stator Assembly .......................................................................2-14

2.2.24 Rotor Assembly ........................................................................2-14

2.2.25 Upper Drum Assembly .............................................................2-15

2.3 COMPATIBILITY ADJUSTMENT ..................................................2-16

2.3.1 Checking/Adjustment of FM Waveform Linearity .......................2-16

2.3.2

Checking/Adjustment of the Height and Tilt of the Audio Control Head ....................

2-17

2.3.3

Checking/Adjustment of the Audio Control Head Phase (X-Value) ...............

2-17

2.3.4 Checking/Adjustment of the Standard Tracking Preset .............2-18

2.3.5 Checking/Adjustment of the Tension Pole Position....................2-18

MECHANISM ADJUSTMENT (DV)

2.4 PREPARATION ...............................................................................2-20

2.4.1 Precautions ................................................................................2-20

2.4.2 Tools Required for Adjustments .................................................2-20

2.4.3 Disassembly and Assembly Procedures....................................2-20

2.4.4 Screws and Washers Used in Disassembly/

Assembly of the Mechanism Assembly......................................2-20

2.5

DISASSEMBLY/ASSEMBLY OF THE MECHANISM ASSEMBLY...................

2-21

2.5.1 Introduction ................................................................................2-21

2.5.2 Mechanism Modes .....................................................................2-21

2.6 MECHANISM TIMING CHART .......................................................2-23

2.7

MECHANISM ASSEMBLY/DISASSEMBLY PROCEDURE TABLE ..................

2-24

2.8 DISASSEMBLY/ASSEMBLY ...........................................................2-26

2.9 LIST OF PROCEDURES FOR DISASSEMBLY .............................2-34

2.10 MECHANISM PHASE CHECK/ADJUSTMENT ............................2-35

2.11 MECHANISM DISASSEMBLY/ASSEMBLY SHEET .....................2-36

2.12 POSITIONING THE TENSION POLE ...........................................2-38

2.13

COMPATIBILITY AND ERROR RATE ADJUSTMENTS .................

2-39

2.13.1 Preparation ..............................................................................2-39

2.13.2 Adjustment ...............................................................................2-39

2.13.3 Linearity adjustment .................................................................2-40

2.13.4 PB switching point adjustment .................................................2-40

2.13.5 Error rate adjustment ...............................................................2-40

2.13.6 Error rate measuring method ...................................................2-40

2.14 TAPE EJECTION ..........................................................................2-41

3. ELECTRICAL ADJUSTMENT (VHS)

3.1 PRECAUTION ..................................................................................3-1

3.1.1 Required test equipments ............................................................3-1

3.1.2 Required adjustment tools ...........................................................3-1

3.1.3 Color (colour) bar signal,Color (colour) bar pattern .....................3-1

3.1.4 Switch settings and standard precautions ...................................3-1

3.1.5 EVR Adjustment ...........................................................................3-1

3.2 SERVO CIRCUIT..............................................................................3-2

3.2.1 Switching point .............................................................................3-2

3.2.2 Slow tracking preset.....................................................................3-2

3.3 VIDEO CIRCUIT ...............................................................................3-2

3.3.1 D/A level .......................................................................................3-2

3.3.2 EE Y/PB Y (S-VHS/VHS) level.....................................................3-2

3.3.3 REC color (colour) level ...............................................................3-3

3.3.5 Video EQ (Frequency response) .................................................3-3

3.3.6 AUTO PICTURE initial setting......................................................3-4

3.3.6 DV EE Y level...............................................................................3-4

3.4 AUDIO CIRCUIT ...............................................................................3-4

3.4.1 Audio REC FM .............................................................................3-4

3.5 DEMODULATOR CIRCUIT...............................................................3-5

3.5.1 Input level.....................................................................................3-5

3.5.2 Stereo VCO..................................................................................3-5

3.5.3 Stereo filter...................................................................................3-5

3.5.4 Separation-1 ................................................................................3-5

3.5.5 Separation-2 ................................................................................3-6

3.5.6 SAP VCO .....................................................................................3-6

ELECTRICAL ADJUSTMENT (DV)

3.6 PREPARATION .................................................................................3-7

3.6.1 Precautions ..................................................................................3-7

3.6.2 Equipment required for adjustment..............................................3-7

3.6.3 Tools required for adjustments .....................................................3-7

3.6.4 Setup............................................................................................3-7

4. CHARTS AND DIAGRAMS

NOTES OF SCHEMATIC DIAGRAM ..................................................... 4-1

CIRCUIT BOARD NOTES ......................................................................4-2

4.1 BOARD INTERCONNECTIONS .......................................................4-3

4.2

SWITCHING REGULATOR SCHEMATIC DIAGRAM[HR-DVS3U/SR-VS30U] ..

4-5

4.3 MAIN (VIDEO/AUDIO) SCHEMATIC DIAGRAM ..............................4-7

4.4 MAIN (VHS SYSCON) SCHEMATIC DIAGRAM ..............................4-9

4.5 MAIN (TUNER) SCHEMATIC DIAGRAM .......................................4-11

4.6 MAIN (VIDEO I/O & SUB EMPHA) SCHEMATIC DIAGRAM .........4-13

4.7 MAIN (AUDIO I/O) SCHEMATIC DIAGRAM...................................4-15

4.8 MAIN (CONNECTION) SCHEMATIC DIAGRAM............................4-17

4.9 3D DIGITAL/2M SCHEMATIC DIAGRAM .......................................4-19

4.10 TERMINAL (S-SUB) SCHEMATIC DIAGRAM ..............................4-21

4.11 TERMINAL (I/O) SCHEMATIC DIAGRAM ....................................4-23

4.12

DEMODULATOR SCHEMATIC DIAGRAM[HR-DVS3U/SR-VS30U] ..

4-25

4.13

POWER SW, SW/DISPLAYAND JOG SCHEMATIC DIAGRAMS ....

4-27

4.14 DV MSD SCHEMATIC DIAGRAM ................................................4-29

4.15 DV MAIN SCHEMATIC DIAGRAM ...............................................4-31

4.16 DV I/O SCHEMATIC DIAGRAM ...................................................4-33

4.17 DV V OUT SCHEMATIC DIAGRAM .............................................4-35

4.18 DV PRE/REC SCHEMATIC DIAGRAM ........................................4-37

4.19 DV REG SCHEMATIC DIAGRAM ................................................4-38

4.20 DV AUDIO AD/DA SCHEMATIC DIAGRAM .................................4-39

4.21 MAIN(ON SCREEN) SCHEMATIC DIAGRAM .............................4-40

4.22 SWITCHING REGULATOR CIRCUIT BOARD .............................4-41

4.23 MAIN CIRCUIT BOARD................................................................4-43

4.24 3D DIGITAL/2M CIRCUIT BOARD ...............................................4-46

4.25

DEMODULATOR, POWER SW, SW/DISPLAY AND JOG CIRCUIT BOARDS ....

4-47

4.26 TERMINAL CIRCUIT BOARD.......................................................4-49

4.27 DV MAIN CIRCUIT BOARD..........................................................4-51

4.28 REMOTE CONTROL SCHEMATIC DIAGRAM ............................4-53

4.29 WAVEFORMS ...............................................................................4-54

4.30 VOLTAGE CHARTS ......................................................................4-55

4.31 FDP GRIDASSIGNMENT AND ANODE CONNECTION .............4-57

4.32 CPU PIN FUNCTION ....................................................................4-58

4.33 SYSTEM CONTROL BLOCK DIAGRAM (VHS) ...........................4-59

4.34 VIDEO BLOCK DIAGRAM(VHS) ..................................................4-61

4.35 AUDIO BLOCK DIAGRAM (VHS) .................................................4-65

4.36 SYSTEM CONTROL BLOCK DIAGRAM (DV) .............................4-67

4.37 VIDEO BLOCK DIAGRAM (DV) ...................................................4-69

5. PARTS LIST

5.1 PACKING AND ACCESSORY ASSEMBLY <M1> ............................5-1

5.2 FINALASSEMBLY <M2> ..................................................................5-2

5.3 MECHANISM ASSEMBLY (VHS) <M3> ...........................................5-4

5.4 MECHANISM ASSEMBLY (DV) <M4>..............................................5-6

5.5 ELECTRICAL PARTS LIST...............................................................5-8

SW REGULATOR BOARDASSEMBLY <01> ........................................5-8

MAIN BOARD ASSEMBLY <03> ............................................................5-9

3D DIGITAL/2M BOARD ASSEMBLY <05> ..........................................5-17

TERMINAL BOARD ASSEMBLY <06> .................................................5-18

A/C HEAD BOARD ASSEMBLY <12> ..................................................5-19

DEMOD BOARD ASSEMBLY <14> ......................................................5-19

POWER BOARD ASSEMBLY <27>......................................................5-19

SW/DISPLAY BOARD ASSEMBLY <28> .............................................5-19

DV MAIN BOARD ASSEMBLY <50> ....................................................5-20

LOADING MOTOR BOARDASSEMBLY <55>.....................................5-25

JOG BOARD ASSEMBLY <85> ............................................................5-25

Important Safety Precautions

Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes

of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the

following precautions when a set is being serviced.

Fig.1

1. Locations requiring special caution are denoted by labels and

inscriptions on the cabinet, chassis and certain parts of the

product. When performing service, be sure to read and com-

ply with these and other cautionary notices appearing in the

operation and service manuals.

2. Parts identified by the symbol and shaded ( ) parts are

critical for safety.

Replace only with specified part numbers.

Note: Parts in this category also include those specified to com-

ply with X-ray emission standards for products using

cathode ray tubes and those specified for compliance

with various regulations regarding spurious radiation

emission.

3. Fuse replacement caution notice.

Caution for continued protection against fire hazard.

Replace only with same type and rated fuse(s) as specified.

4. Use specified internal wiring. Note especially:

1) Wires covered with PVC tubing

2) Double insulated wires

3) High voltage leads

5. Use specified insulating materials for hazardous live parts.

Note especially:

1) Insulation Tape 3) Spacers 5) Barrier

2) PVC tubing 4) Insulation sheets for transistors

6. When replacing AC primary side components (transformers,

power cords, noise blocking capacitors, etc.) wrap ends of

wires securely about the terminals before soldering.

Power cord

Fig.2

10. Also check areas surrounding repaired locations.

11. Products using cathode ray tubes (CRTs)

In regard to such products, the cathode ray tubes themselves,

the high voltage circuits, and related circuits are specified for

compliance with recognized codes pertaining to X-ray emission.

Consequently, when servicing these products, replace the cath-

ode ray tubes and other parts with only the specified parts.

Under no circumstances attempt to modify these circuits.

Unauthorized modification can increase the high voltage value

and cause X-ray emission from the cathode ray tube.

12. Crimp type wire connector

In such cases as when replacing the power transformer in sets

where the connections between the power cord and power

transformer primary lead wires are performed using crimp type

connectors, if replacing the connectors is unavoidable, in or-

der to prevent safety hazards, perform carefully and precisely

according to the following steps.

1) Connector part number : E03830-001

2) Required tool : Connector crimping tool of the proper type

which will not damage insulated parts.

3) Replacement procedure

(1) Remove the old connector by cutting the wires at a point

close to the connector.

Important : Do not reuse a connector (discard it).

Fig.7

cut close to connector

Fig.3

(2) Strip about 15 mm of the insulation from the ends of

the wires. If the wires are stranded, twist the strands to

avoid frayed conductors.

15 mm

Fig.4

(3) Align the lengths of the wires to be connected. Insert

the wires fully into the connector.

Connector

Metal sleeve

Fig.5

(4) As shown in Fig.6, use the crimping tool to crimp the

metal sleeve at the center position. Be sure to crimp fully

to the complete closure of the tool.

Precautions during Servicing

7. Observe that wires do not contact heat producing parts

(heatsinks, oxide metal film resistors, fusible resistors, etc.)

8. Check that replaced wires do not contact sharp edged or

pointed parts.

9. When a power cord has been replaced, check that 10-15 kg of

force in any direction will not loosen it.

1.25

2.0

5.5

Crimping tool

Fig.6

(5) Check the four points noted in Fig.7.

Not easily pulled free Crimped at approx. center

of metal sleeve

Conductors extended

Wire insulation recessed

more than 4 mm

S40888-01

v Safety Check after Servicing

Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been

returned to original positions, Afterwards, perform the following tests and confirm the specified values in order to verify compli-

ance with safety standards.

1. Insulation resistance test

Confirm the specified insulation resistance or greater between power cord plug prongs and

externally exposed parts of the set (RF terminals, antenna terminals, video and audio input

and output terminals, microphone jacks, earphone jacks, etc.). See table 1 below.

2. Dielectric strength test

Confirm specified dielectric strength or greater between power cord plug prongs and exposed

accessible parts of the set (RF terminals, antenna terminals, video and audio input and output

terminals, microphone jacks, earphone jacks, etc.). See table 1 below.

3. Clearance distance

When replacing primary circuit components, confirm specified clearance distance (d), (d’) be-

tween soldered terminals, and between terminals and surrounding metallic parts. See table 1

below.

4. Leakage current test

Confirm specified or lower leakage current between earth ground/power cord plug prongs

and externally exposed accessible parts (RF terminals, antenna terminals, video and audio

input and output terminals, microphone jacks, earphone jacks, etc.).

Measuring Method : (Power ON)

Insert load Z between earth ground/power cord plug prongs and externally exposed accessi-

ble parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and

following table 2.

5. Grounding (Class 1 model only)

Confirm specified or lower grounding impedance between earth pin in AC inlet and externally exposed accessible parts (Video in,

Video out, Audio in, Audio out or Fixing screw etc.).

Measuring Method:

Connect milli ohm meter between earth pin in AC inlet and exposed accessible parts. See figure 10 and grounding specifications.

Chassis

Power cord,

primary wire

Region

USA & Canada

Europe & Australia

Grounding Impedance (Z)

Z 0.1 ohm

Z 0.5 ohm

≤

AC inlet

Earth pin

Exposed accessible part

Milli ohm meter

Grounding Specifications

Fig. 10

Externally

exposed

accessible part

Fig. 9

Fig. 8

Clearance Distance (d), (d')

d, d' 3 mm

d, d' 4 mm

d, d' 3.2 mm

1 MΩR 12 MΩ/500 V DC

Dielectric Strength

AC 1 kV 1 minute

AC 1.5 kV 1 miute

AC 1 kV 1 minute

AC Line Voltage

100 V

100 to 240 V

110 to 130 V

200 to 240 V

Japan

USA & Canada

Europe & Australia R 10 MΩ/500 V DC

Region

Insulation Resistance (R)

R 1 MΩ/500 V DC

≤

≥≥

≤

≤≤

≤

AC 3 kV 1 minute

(Class 2)

AC 1.5 kV 1 minute

(Class 1)

d 4 mm

d' 8 mm (Power cord)

d' 6 mm (Primary wire)

Table 1 Specifications for each region

a, b, cLeakage Current (i)AC Line Voltage

100 V

110 to 130 V

220 to 240 V

Japan

USA & Canada

i 1 mA rms Exposed accessible parts

Exposed accessible parts

Antenna earth terminals

Other terminals

i 0.5 mA rms

i 0.7 mA peak

i 2 mA dc

i 0.7 mA peak

i 2 mA dc

Europe & Australia

Region Load Z

≤

1 kΩ

2 kΩ

1.5 kΩ

0.15 µF

50 kΩ

Table 2 Leakage current specifications for each region

Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.

2S40888-01

1-1

SECTION 1

DISASSEMBLY

1.1 HOW TO REMOVE THE MAJOR PARTS

1.1.1 Introduction

This set is a double-deck video recorder integrating a Mini DV

deck and a VHS deck. Its internal structure is divided into three

sections that include the power supply, VHS and DV sections.

Therefore, the removal of major parts will also be described

under three separate sections as listed below.

1. COMMON section

2. VHS section

3. DV section

1.2 HOW TO READ THE DISASSEMBLY AND ASSEMBLY

3. DV section

1. COMMON section 2. VHS section

< TOP VIEW >

(1) Order of steps in Procedure

When reassembling, perform the step(s) in the reverse order.

These numbers are also used as the identification (location) No.

of parts Figures.

(2) Part name to be removed or installed.

(3) Fig. No. showing procedure or part location.

(4) Identification of part to be removed, unhooked, unlocked,

released, unplugged, unclamped or unsoldered.

P= Spring, W= Washer, S= Screw, L= Locking tab, SD= Solder,

CN**(WR**)= Remove the wire (WR**) from the connector

(CN**).

Note:

• The bracketed ( ) WR of the connector symbol are as-

signed nos. in priority order and do not correspond to

those on the spare parts list.

(5) Adjustment information for installation

Fig. 1-1-1

§§ §§ §

(1) (2) (3) (4) (5)

Step/

Loc No.

Fig. No.

Point NotePart name

Top cover, Bracket COM1

4(S1), 3(S2), 2(L1), (L2)

2(S3)

1—

Front panel

assembly COM2 8(L3),

CN7507(WR1),

CN3011(WR2)

<Note

1,2,3,4>

1.3 DISCONNECTION OF CONNECTORS (WIRES)

CONNECTOR

FPC

CONNECTOR

FPC

Fig. 1-3-1 Fig. 1-3-2

Fig. 1-3-3 Fig. 1-3-4

CONNECTOR

FPC

Fig. 1-3-5

CONNECTOR

FPC

CONNECTOR

FPC

1-2

1.4

HOW TO REMOVE THE MAJOR PARTS <COM section>

1.4.1 Disassembly flow chart

This flowchart shows the disassembly procedure for the ex-

terior parts and electrical parts.

Basically, reverse this procedure when assembling them.

[1] Top cover, Bracket

[2] Front panel assembly

SW/Display board assembly, Power SW board assembly,

[3]

Jog board assembly

[4] SW REG board assembly

[5]

Foot assembly, Foot(center), Foot(rear), Bottom cover

• When attaching the FPC, be sure to connect it in the cor-

rect orientation.

• When attaching the FPC take care that it is not caught.

• When removing or attaching the WIRE/FPC, refer to "1.7

CONNECTION"(page 1-8) at same time.

When attaching the Front panel assembly, make sure that

the door openers of both decks (DV, VHS) are in the down

position.

When attaching the Front panel assembly, be careful not

to damage the DV terminals.

When attaching (WR2a) and (WR2b), insert supporting

long side to connector in the Main board assembly.

When attaching Jog board assembly, attach it before SW/

Display board assembly.

When removing Bottom cover, remove it after VHS sec-

tion parts and DV section parts.

1.4.2

Disassembly/assembly method <COM section>

Fig. COM1

Fig. COM2

Step/

Loc No.

Fig. No.

Point NotePart name

Top cover

Bracket COM1 4(S1a), 2(S1b)

2(S1c)

[1] —

—

Front panel

assembly COM2 8(L2a),

CN7510(WR2a),

CN3011(WR2b)

<Note 2a,

2b, 2c,2d>

[2]

SW REG board

assembly

[4]

COM3 8(S3a)

2(S3b)

2(S3c),Knob(Jog)

[3]

COM4 4(S4a),

CN5322(WR4a),

CN5321(WR4b),

CN5325(WR4c),

CN5324(WR4d),

CN5323(WR4e)

[5] COM5Lug wire

Foot assembly

Foot(center)

Foot(rear)

Bottom cover

(S5a)

5(L5a)

4(L5b), 9(L5c),

2(L5d)

SW/Display board assembly

Power SW board assembly

Jog board assembly

(S1a)

(S1b)

(S1c)

[1] Top cover

[1] Bracket

(L2a)

(WR2a)

(WR2b)

<Note 2a, 2b> CN7510

CN3011

VHS SIDE

DV SIDE

DV terminals

[2] Front panel assembly

1-3

Fig. COM3

Fig. COM4

Fig. COM5

SW/Display board

assembly

Power SW board

assembly

Jog board assembly

Knob (Jog)

(S3b)

(S3a)

(S3c)

(S3a)

(S3a) (S3c)

(S3a)

(S3b)

[3]

[2] Front panel assembly

CN5325

(WR4a)

(WR4d)

[4] SW.REG board assy

(WR4e)

(WR4c)

(WR4b)

CN5322

CN5321

CN5324

CN5323

(S4a)

[5] Foot assy

[5] Lug wire

[5] Foot(center)

[5] Bottom cover

[5] Foot(rear) [5] Foot(rear)

[5] Foot assy

(L5c)

(L5b)

(L5d)

(S5a)

(L5a)

1-4

1.5

HOW TO REMOVE THE MAJOR PARTS <VHS section>

1.5.1 Disassembly flow chart

This flowchart shows the disassembly procedure for the ex-

terior parts and electrical parts.

Basically, reverse this procedure when assembling them.

However, it is required to remove the common section parts

as far as [1] “Top cover Bracket” and [2] “Front panel as-

sembly” in advance. (See section 1.4.)

[1] Drum assembly

[2] Mechanism assembly

[3] Main board assembly

1.5.2 DIsassembly/assembly method <VHS section>

When attaching or removing the FPC, take care not to dis-

connect any of the wires.

• When attaching the FPC, be sure to connect it in the cor-

rect orientation.

• When removing or attaching the WIRE/FPC, refer to "1.7

CONNECTION"(page 1-8) at same time.

When it is required to remove the screws ((S7a), (S7b),

(S7c)and(S7d)) retaining theMechanismassembly, please

refer to the “Procedures for Lowering the Cassette holder

assembly”(See on page 1-4).

• When reattaching the Mechanism assembly to the Main

board assembly, take care not to damage the sensors on

the Main board assembly (D3001: LED, Q3002: Start sen-

sor, Q3003: End sensor, S3002: S cassette switch).

• When reattaching the Mechanism assembly to the Main

board assembly, CN2 of LOADING MOTOR BOARD

should not be floated.

• WhenremovingtheMechanismassemblyonly,unhook the

two spacers connecting it with the Main board assembly

with pliers from the back side of the Main board assembly

first, and then remove the Mechanism assembly.

Fig. 1

Fig. 2

Fig. 3

Procedures for Lowering the Cassette holder assembly

As the mechanism of this unit is integrated with the Housing

assembly, the holder must be lowered and the two screws un-

screwed when removing the Mechanism assembly.

Procedures for Lowering the Cassette holder assembly

Turn the loading motor pulley in the direction as indicated by

Fig.2. As both A and B levers are lodged twice, push the

levers in the direction as indicated by Fig.3 to release them.

When pushing the levers, do it in the order of A , B , B , A .

When the holder has been lowered, turn the pulley until the

cassette holder is securely in place without allowing any up/

down movement.

Fig. V1

Step/

Loc No.

Fig. No.

Point NotePart name

Drum assembly

(Inertia plate)

(Roller arm assy)

(Cleaner assy)

CN1(WR6a),

CON1(WR6b),

(S6a), (S6b), (S6c)

4(L6a)

(P6a), (L6b)

(L6c)

[1]

Mechanism

assembly V2

(S7a), (S7b), (S7c),

(S7d), 2(L7a),

CN1(WR7a)

[2]

<Note 1b,

2a, 2b, 2c>

Main board

assembly V3 (S8a), 6(L8a),

CN701(WR8a),

CN2601(WR8b),

CN3014(WR8c)

[3] <Note 1b>

(S6b)

[1]

Drum

assembly

CN1

CON1

(WR6b)

(L6a)

(L6b)

(P6a)

Roller arm

assy

Inertia plate

(L6c)

(WR6a)

Cleaner assy

(S6a) (S6c)

Note: When installing the Drum assembly, secure the screws

(S6a to S6c) in the order of a, b, c.

1-5

Fig. V2

Fig. V3

CN1

Q3003

D3001

S3002

Q3002

CN2

Q3002

Start sensor

S3002

S cassette switch

D3001

LED

Q3003

End sensor

(L7a)

spacer

(L7a)

spacer

(S7a)

(S7b)

(S7c)

(S7d) (WR7a)

CN2

[2]

Mechanism

assembly

A/C head base (WR7a)

Note:

When installing the

Mechanism assembly,

secure the screws

(S7a to S7b) in the

order of a, b.

Note:

Make a crease on the position where

the dotted line is not exceeded.

(S8a)

(L8a)

CN2601

CN701

CN3014

[3] Main board

assembly

(WR8a)

(WR8b)

(WR8c)

1-6

1.6

HOW TO REMOVE THE MAJOR PARTS <DV section>

1.6.1 Disassembly flow chart

This flowchart shows the disassembly procedure for the ex-

terior parts and electrical parts.

Basically, reverse this procedure when assembling them.

However, it is required to remove the common section parts

as far as [1] “Top cover, Bracket” and [2] “Front panel as-

sembly” in advance. (See section 1.5.)

1.6.2 Disassembly/assembly method <DV section>

With due regard to operational considerations, remove the

parts located on the Base(DV) (i.e. DV Mechanism assem-

bly, DV MDA board assembly etc.) together before remov-

ing the major parts.

Take care not to scratch or damage the drum assembly

by the cleaner assembly when performing work.

Take care not to damage the board assembly when de-

taching parts.

• When attaching the FPC, be sure to connect it in the cor-

rect orientation.

• When removing or attaching the WIRE/FPC, refer to "1.7

CONNECTION"(page 1-8) at same time.

Fig. D1

Fig. D2

Step/

Loc No.

Fig. No.

Point NotePart name

Base(DV)

D1 3(S9a), (S9b)

[1] <Note 2a,

2b, 2c>

DV MDA board

assembly D3 2(S11a), 2(S11b),

2(L11a),

CN5503(WR11a),

CN5504(WR11b),

CN5502(WR11c),

CN5505(WR11d),

CN5507(WR11e),

Bracket(MDA)

[3]

DV Mechanism

assembly

DV Main board

assembly

D2 3(S10a),

CN1502(WR10a),

CN4001(WR10b)

CN1501(WR10c)

4(S10b)

[2]

[1] Base(DV)

[2] DV Mechanisam assembly, DV Main board assembly

[3] DV MDA board assembly

(S9b)

Lug wire

Base(DV)

Bottom chassis

When reattaching (S9b), attach

in the order of the above figure.

(S9a)

(S9a) (S9b)

(S9a)

Lug wire

CN4001

CN1502

[2] DV Main

board assembly

[1] Base(DV)

[2] Mechanism

assembly(DV)

<Note 2a> (S10a) (S10a)

(S10b)

(S10b) (S10b)

(WR10a)

(WR10b)

(WR10c)

CN4001

CN1501

CN1502

1-7

Fig. D3

CN5507

CN5503

CN5505

CN5502

(WR11e)

(WR11c)

(WR11d)

(S11a)

[3] DV MDA board assembly (S11a)

(S11b)

(L11a)

Bracket(DV) CN5504

(WR11b)

(WR11a)

NOTE:When removing, remove in order of a number to .

1-8

1.7 CONNECTION

CN5501

CN5323

CN1001

CN3701

DRUM

DV DRUM

CN5506

CN1501

CN1

CN3001

A/C HEAD

ST2

CN502CN901

TERMINAL PWB

FAN

CN1502

To SW/Display board

CN7001 To SW/Display board

CN7191

910

CN5507

CN5503

CN5505

CN5502

"D"

Treat the wire so as not to come to fan.

right side

Hold wire by stylepin.

right side

make a crease

right side

Should be confirmed that wire not

touch to IC of STATOR PWB ASS'Y.

right side

back side

bend

back side

right side

bend bend

bend

right side

NOTE) Wire the wires as shown in a figure.

NOTE) Wire the wires as

shown in a figure. NOTE) Put the surplus

wire into this space. NOTE)Twist a wire one time.

NOTE) Wire the wires as shown in a figure.

Fig. 1-7-1

1-9

CN5504

CN1

DRUM

MAIN PWB

DV MECHA

CN1502

DV MAIN

PWB

BOTTOM

CHASSIS

FRONT

PANEL

MAIN PWB

BOTTOM CHASSIS

CN7510

CN3011

AC/ HEAD (WR7a)

AC/ HEAD

DETAIL"A"

Absorb the looseness of

the wire in the B part.

DETAIL"B"

electrode side

Push into the BOTTOM CHASSIS

and treat the wire according

to the following figure.

DETAIL"C"

Absorb the looseness of the wire

according to the following figure.

WIRING for MECHA ADJ

right side

FINAL WIRING

right side

After MECHA adjustment,

Treat the wire (WR7a) according

to the following figure.

Make a crease on the position where

the dotted line is not exceeded.

DETAIL "D"

DV MDA BOARD ASSEMBLY

BRACKET(DV)

Fig

No. Symbol Connected point Connected point

Connection Pin

No.

Type

(FPC/

WIRE)

1 WR2a MAIN CN7510 SW/DISPLAY CN7191 10 FPC

2 WR2b MAIN CN3011 SW/DISPLAY CN7001 20 FPC

3 WR4a MAIN CN7508 SW/REG CN5322 10 FPC

4 WR4b MAIN CN7509 SW/REG CN5321 12 FPC

5 WR4c SW/REG CN5325 FAN MOTOR - 2 WIRE

6 WR4d SW/REG CN5324 DV MDA CN5501 5 WIRE

7 WR4e SW/REG CN5323 DV MAIN CN1001 8 FPC

8 WR6a MAIN CN1 UPPER DRUM - 13 FPC

9 WR6b DRUM MOTOR CON1 MAIN CN3001 5 FPC

10 WR7a A/C HEAD CN1 MAIN CN2001 7 FPC

11 WR8a MAIN CN701 DV MAIN CN3501 14 FPC

12 WR8b MAIN CN2601 DV MAIN CN3701 8 FPC

13 WR8c MAIN CN3014 DV MAIN CN1503 4 FPC

14 WR10c DV MAIN CN1501 DV MDA CN5506 20 FPC

15 - MAIN CN7506 TERMINAL CN502 15 FPC

16 - MAIN CN7507 TERMINAL CN901 5 FPC

17 WR10a SENSOR(DV) - DV MAIN CN1502 15 FPC

18 WR10b PRE/REC(DRUM)(DV) - DV MAIN CN4001 8 FPC

19 WR11a DRUM MOTOR(DV) - DV MDA CN5503 11 FPC

20 WR11e HOUSING MOTOR(DV) - DV MDA CN5507 4 WIRE

21 WR11d ROTARY ENCODER(DV) - DV MDA CN5505 4 WIRE

22 WR11c LOADING MOTOR(DV) - DV MDA CN5502 2 WIRE

23 WR11b CAPSTAN MOTOR(DV) - DV MDA CN5504 18 FPC

Fig. 1-7-2

Table 1-7-1

1-10

1.8 SERVICE POSITIONS

The servicing locations for use in troubleshooting or servic-

ing of the set are provided separately for the VHS and DV.

ISERVICE POSITIONS <VHS SIDE>

II SERVICE POSITIONS <DV FOIL SIDE>

III SERVICE POSITIONS <DV COMPONENT SIDE>

1.8.2 Service position <VHS SIDE>

(1) Remove the top cover and bracket.

(2) Remove the front panel assembly.

(3) Remove the Main board assembly together with the

Mechanism assembly.

< Installation >

(1) Stand up the Bottom chassis assembly so that the DV/

Regulator side is in the lower position.

Note: • Take care to the fall of the Fan.

(2) Connect FPCs and wires accordingly in Fig. 1-8-1.

Point: • Take care that the FPCs and wires are not

subjected to stress in this positioning.

(3) Connect the PATCH CORDS to the two FPCs of the Front

panel assembly, then connect the CORDS to the

CN7510/CN3011.

For the PATCH CORD is required, see Table 1-8-1.

CN5322

CN2601

CN7509

Main board assembly

Front panel assembly

CN7508

CN701

CN3014

CN3501

CN7001

CN7191

CN3701

CN1503

CN7510

CN3011

CN5321

Fig. 1-8-1

1.8.3 Service position <DV FOIL SIDE>

(1) Remove the top cover and bracket.

(2) Remove the front panel assembly.

(3) Remove the Base(DV) together with DV Mechanism as-

sembly and DV Main board assembly.

Note:

• Take care not to damage the parts during operating.

< Installation >

(1) Place an insulation sheet on the SW/Reg board assem-

bly.

(2) Place a DV section(Base(DV) with DV Mechanism as-

sembly and DV Main board assembly) on the insulation

sheet.(refer to Fig. 1-8-2)

Note:

• Confirm that FPCs and wires are not unconnected from

the connectors.

Insulation Sheet

DV Mechanism

assembly

DV Main board

assembly

Base(DV)

CN3701

CN1503

Front panel assembly CN7001 CN7191

CN7510

CN3011

CN3014

CN701

CN2601

CN1502

CN3501

Fig. 1-8-2

1.8.1 Requirement PATCH CORDS

The following PATCH CORDS is required.

Board to Board Wire Used

1 PTU94022-10 QUQ212-1040CG I

2 PTU94022-20 QUQ112-2040CG I

3 YTU94074-15 QUQ105-1540AA III

Table 1-8-1

1-11

Insulation Sheet

DV Mechanism

assembly

DV Main board

assembly

CN4001

Front panel assembly CN7001 CN7191

CN7510

CN3011

CN1502

1.8.4 Service position <DV COMPONENT SIDE>

(1) Remove the top cover and bracket.

(2) Remove the front panel assembly.

(3) Remove the Base(DV) together with DV Mechanism as-

sembly and DV Main board assembly.

(4) Remove the DV Mechanism assembly and DV Main

board assembly from Base(DV).

Note:

• Take care not to damage the parts during operating.

< Installation >

(1) Place a DV Main board assembly on the Bottom chas-

sis.

(2) Place an insulation sheet on the rear side of DV Main

board assembly.

(3) Place a DV Mechanism assembly on the insulation sheet.

Note:

• Confirm that DV Mechanism assembly be getting on on

the insulation sheet completely.

(4) Connect PATCH CORD to the connector(CN1502) and

connect FPC from DV Mechanism assembly.(refer to Fig.

1-8-3)

(5) Connect other FPCs and wires to the connector that cor-

responds each.(refer to "1-7 CONNECTION")

For the PATCH CORD is required, see Table 1-8-1.

Note:

• Confirm that FPCs and wires are not unconnected from

the connectors(especially CN4001).

Fig. 1-8-3

1.9 Jig RCU mode

This unit uses the following two modes for receiving remote

control codes.

1) User RCU mode : Ordinary mode for use by the user.

2) Jig RCU mode : Mode for use in production and serv-

icing.

When using the Jig RCU, it is required to set the VCR to the Jig

RCU mode (the mode in which codes from the Jig RCU can be

received). As both of the above two modes are stored in the

EEPROM, it is required to set the VCR back to the User RCU

mode each time that an adjustment is made or to check that the

necessary operations have been completed. These modes can be

set by the operations described below.

1.9.1 Setting the Jig RCU mode

(1) Unplug the power cord plug from the power outlet.

(2) Press and hold the “REC” and “PAUSE” buttons on the

VCR simultaneously, while plugging the power cord plug

into the power outlet.

When the VCR is set to the Jig RCU mode, the symbols

( “ : ” ) in the time display of the FDP are turned off.

1.9.2 Setting the User RCU mode

(1) Turn off the power.

(2) Press the “REC” and “PAUSE” buttons of the VCR simul-

taneously. Alternatively, transmit the code “80” from the

Jig RCU.

1-12

1.10 MECHANISM SERVICE MODE

This model has a unique function to enter the mechanism

into every operation mode without loading of any cassette

tape. This function is called the “MECHANISM SERVICE

MODE”.

1.10.1 How to set the "MECHANISM SERVICE MODE"

(1) Disconnect VCR from AC.

(2) Connect TPGND and TP7001 (TEST) on the Display

board assembly with a jump wire.

(3) Connect VCR to AC.

(4) Press the POWER button.

Fig. 1-10-1

(5) With lock levers A B on the left and right of the Cassette

holder assembly pulled toward the front, slide the holder

in the same direction as the cassette insertion direction.

(For the positions of lock levers A B , refer to the “Pro-

cedures for Lowering the Cassette holder assembly” on

page 1-4 of 1.5 HOW TO REMOVE THE MAJOR PARTS

(6) The cassette holder lowers and, when the loading has

completed, the mechanism enters the desired mode.

CN7191

CN7001

FW7002

FW7001

CN5501

CN5323

CN1001 CN3701

DRUM

DV DRUM

CN5506

CN1501

CN1

CN3001

A/C HEAD

ST2

CN502CN901

FAN

CN1502

TERMINAL BOARD ASSEMBLY

3D DIGITAL/2M BOARD ASSEMBLY DEMOD BOARD

ASSEMBLY

TP111

D.FF

TP4001

CTL. P

VR1401

D/A LEVEL

ADJ

VR701

D YV IN

TP701

D YV IN

TP106

PB. FM

TP2253

A. PB.FM

CP3003

TPGND

TP7001

TEST

CP3004

CP4001

CP5325

CP5322

CP5321

MAIN BOARD

ASSEMBLY

SW/REG BOARD

ASSEMBLY

VHS MECHANISM ASSEMBLY

SW/DISPLAY BOARD ASSEMBLY

DV MECHANISM

ASSEMBLY

DV MAIN BOARD

ASSEMBLY

DV MDA BOARD

ASSEMBLY

POWER SW BOARD

ASSEMBLY JOG BOARD

ASSEMBLY

CN2001

(JIG CONN.)

right side right side

right side

make a crease

right side

back side

bend

back side

right side

bend bend

bend

right side

1-13

1.11 Emergency display function

This unit has a function for storing the history of the past two

emergencies (EMG) and displaying them on each FDP (or

OSD). With the status of the VCR and mechanism at the mo-

ment an emergency occurred can also be confirmed.

Fig. 1-11a Jig RCU [PTU94023B]

(2) Transmit the code “59” from the Jig RCU again.

The FDP shows the EMG detail information <1> in the form

of “ *1: *2 : 34 ”.

*1 : Deck operation mode at the moment of EMG

*2 : Mechanism operation mode at the moment of EMG

3– : Mechanism sensor information at the moment of

EMG

–4 : Mechanism mode position at the moment of EMG

(3) Transmit the code “59” from the Jig RCU once again.

The FDP shows the EMG detail information <2> in the form

of “ *5 : *6 : *7 ”.

*5 : Type of the cassette tape in use <1> .

*6 : Winding position of the cassette tape in use

*7 : Type of the cassette tape in use <2> (Winding area)

(4) Transmit the code “59” from the Jig RCU once again to re-

set the display.

Notes:

• For the OSD display model, all EMG information are

showed by transmitting first code from the Jig RCU.

• For the EMG content, see “1.7.3 EMG content descrip-

tion”.

• For the EMG detail information <1> , see “1.7.4 EMG de-

tail information <1> ”.

• For the EMG detail information <2> , see “1.7.5 EMG de-

tail information <2>”.

1.11.2 Clearing the EMG history

(1) Display the EMG history.

(2) Transmit the code “36” from the Jig RCU.

(3) Reset the EMG display.

<Example 1> E : 01 : 03

Previous EMG

Latest EMG

No EMG record

<Example 2> E : – – : – –

1.11.1 Displaying the EMG information

(1) Transmit the code “59” from the Jig RCU.

The FDP shows the EMG content in the form of “E:**:**”.

INITIAL MODE

DATA CODE

CUSTOM CODE

43: A CODE

[Data transmitting method]

Depress the “ ” ( 3 ) button

after the data code is set.

Jig RCU

Notes:

• The EMG detail information <1><2> show the information

on the latest EMG.

It becomes “ – – : – – : – –” when there is no latest EMG

record.

• When using the Jig RCU, it is required to set the VCR to

the Jig RCU mode (the mode in which codes from the Jig

RCU can be received).

FDP display model

[FDP display]

0: 00 : 00

E:**:**

*1: *2 : 34

*5: *6 : *7

E:**:**

*1: *2 : 34

*5: *6 : *7

EMG detail information <2>

EMG detail information <1>

EMG content display

(E:Latest:Previous)

Normal display

OSD display model

[OSD display]

EMG EMG content display

(E:Latest:Previous)

FDP (7segment LED) display model

[FDP display]

0: 00

E: **

1: **

2: *1

3: *2

4: 34

5: *5

6: *6

7: *7

Normal display

EMG content display (Latest)

EMG content display (Previous)

EMG detail information <1>

[Deck operation mode]

EMG detail information <1>

[Mechanism operation mode]

EMG detail information <1>

[Mechanism sensor information and Mechanism mode position]

EMG detail information <2>

[Type of the cassette tape in use <1>]

EMG detail information <2>

[Winding position of the cassette tape in use]

EMG detail information <2>

[Type of the cassette tape in use <2> (Winding area)]

(EMG-02e)

1-14

1.11.3 EMG content description

Note: EMG contents “E08/E09” are for the model with Dynamic Drum (DD).

Table 1-11-3a

When the mechanism mode cannot be changed to an-

other mode even when the loading motor has rotated

for more than 4 seconds in the loading direction, [E:01]

is identified and the power is turned off.

When the mechanism mode cannot be changed to an-

other mode even when the loading motor has rotated

for more than 4 seconds in the unloading direction, [E:02]

is identified and the power is turned off.

When the take-up reel pulse has not been generated for

more than 4 seconds in the capstan rotating mode, [E:03]

is identified, the pinch rollers are turned off and stopped,

and the power is turned off. However, the reel EMG is

not detected in STILL/SLOW modes.

When the drum FG pulse has not been input for more

than 3 seconds in the drum rotating mode, [E:04] is iden-

tified, the pinch rollers are turned off and stopped, and

the power is turned off.

When the eject operation does not complete in 3 sec-

onds after the start, [E:05] is identified, the pinch rollers

are turned off and stopped, and the power is turned off.

When the cassette insertion operation does not complete

in 3 seconds after the start, the cassette is ejected. In

addition, when the operation does not complete within

3 seconds after the start, [E:05] is also identified and the

power is turned off immediately.

When the capstan FG pulse has not been generated for

more than 1 second in the capstan rotating mode, [E:06]

is identified, the pinch rollers are turned off and stopped,

and the power is turned off.However, the capstan EMG

is not detected in STILL/SLOW/FF/REW modes.

When short-circuiting of the SW power supply with GND

has lasted for 0.5 second or more, [E:07] is identified,

all the motors are stopped and the power is turned off.

When DD tilting does not complete in 4 seconds, [E:08]

is identified, the tilt motor is stopped and the power is

turned off.

When the DD FG pulse is not generated within 2.5 sec-

onds, [E:09] is identified, the tilt motor is stopped and

the power is turned off.

When the supply reel pulse has not been generated for

more than 10 seconds in the capstan rotating mode,

[E:0A] is identified and the cassette is ejected (but the

power is not turned off). However, note that the reel EMG

is not detected in the SLOW/STILL mode.

The mechanism is locked in the middle of mode transition.

. The mechanism is locked at the loading end due to the encoder position

reading error during mode transition.

Power is not supplied to the loading MDA.

The mechanism is locked in the middle of mode transition.

The mechanism is locked at the unloading end due to the encoder posi-

tion reading error during mode transition.

Power is not supplied to the loading MDA.

The take-up reel pulse is not generated in the FWD transport modes (PLAY/

FWD SEARCH/FF, etc.) because;

1) The idler gear is not meshed with the take-up reel gear;

The idler gear is meshed with the take-up reel gear, but incapable of wind-

ing due to too large mechanical load (abnormal tension);

3) The take-up reel sensor does not output the FG pulse.

The supply reel pulse is not generated in the REV transport modes (REV

SEARCH/REW, etc.) because;

1) The idler gear is not meshed with the supply reel gear.

2) The idler gear is meshed with the supply reel gear, but incapable of wind-

ing due to too large a mechanical load (abnormal tension);

3) The supply reel sensor does not output the FG pulse.

Power is not supplied to the reel sensors.

The drum could not start or the drum rotation has stopped due to too large

a load on the tape, because;

1) The tape tension is abnormally high;

The tape is damaged or a foreign object (grease, etc.) adheres to the tape.

The drum FG pulse did not reach the System controller CPU because;

1) The signal circuit is disconnected in the middle;

2) The FG pulse generator (hall device) of the drum is faulty.

The drum control voltage (DRUM CTL V) is not supplied to the MDA.

Power is not supplied to the drum MDA.

The cassette cannot be ejected due to a failure in the drive mechanism of

the housing.

When the housing load increases during ejection, the loading motor is

stopped because of lack of headroom in its drive torque.

Housing load increasing factors: Temperature environment (low tempera-

ture, etc.), mechanism wear or failure.

The sensor/switch for detecting the end of ejection are not functioning normally.

The loading motor drive voltage is lower than specified or power is not sup-

plied to the motor (MDA).

When the user attempted to eject a cassette, a foreign object (or perhaps

the user's hand) was caught in the opening of the housing.

The capstan could not start or the capstan rotation has stopped due to too

large a load on the tape, because;

1) The tape tension is abnormally high (mechanical lock);

2) The tape is damaged or a foreign object (grease, etc.) is adhered to the

tape (occurrence of tape entangling, etc.).

The capstan FG pulse did not reach the System controller CPU because;

1) The signal circuit is disconnected in the middle;

2) The FG pulse generator (MR device) of the capstans is faulty.

The capstan control voltage (CAPSTAN CTL V) is not supplied to the MDA.

Power is not supplied to the capstan MDA.

The SW 5 V power supply circuit is shorted with GND.

The SW 12 V power supply circuit is shorted with GND.

1. The absolute value sensor is defective. (The soldered parts have separated.)

2. The pull-up resistor at the absolute sensor output is defective. (The soldered parts

have separated.)

3. Contact failure or soldering failure of the pins of the connector (board-to-board) to the

absolute value sensor.

The absolute value sensor data is not sent to the System Controller CPU.

1. The FG sensor is defective. (The soldered parts have separated.)

2. The pull-up resistor at the FG sensor output is defective. (The soldered parts have

separated.)

3. Contact failure or soldering failure of the pins of the connector (board-to-board) to the FG sensor.

4. The power to the sensor is not supplied. (Connection failure/soldering failure)

5. The FG pulse is not sent to the System Controller CPU.

The tilt motor is defective. (The soldered parts have separated.)

7. The drive power to the tilt motor is not supplied. (Connection failure/soldering failure)

8. The tilt motor drive MDA - IC is defective.

9. Auto-recovery of the DD tilting cannot take place due to overrun.

The supply reel pulse is not generated in the FWD transport mode (PLAY/

FWD SEARCH/FF, etc.) because;

1) PLAY/FWD or SEARCH/FF is started while the tape in the inserted cas-

sette is cut in the middle;

2) A mechanical factor caused tape slack inside and outside the supply

reel side of the cassette shell. In this case, the supply reel will not rotate

until the tape slack is removed by the FWD transport, so the pulse is not

generated until then;

3) The FG pulse output from the supply reel sensor is absent.

The take-up reel pulse is not generated in the REV transport mode (REV

SEARCH/REW, etc.).

1) REV SEARCH/REW is started when the tape in the inserted cassette

has been cut in the middle;

2) A mechanical factor caused tape slack inside and outside the take-up

reel side of the cassette shell. In this case, the supply reel will not rotate

until the tape slack is removed by the REV transport, so the pulse will

not be generated until that time;

3) The FG pulse output from the take-up reel sensor is absent.

The power to a reel sensor is not supplied.

FDP CONTENT CAUSE

Presupposing the presence of the control pulse output in the PLAY mode, when the value obtained by mixing the two V.FM output

channels (without regard to the A.FM output) has remained below a certain threshold level for more than 10 seconds, [E:C1] or [E:U1]

is identified and recorded in the emergency history. During the period in which a head clog is detected, the FDP and OSD repeat the

“3-second warning display” and “7-second noise picture display” alternately.

EMG code : “E:C1” or “E:U1” / FDP : “U:01” / OSD : “Try cleaning tape.” or “Use cleaning cassette.”

The head clog warning is reset when the above-mentioned threshold has been exceeded for more than 2 seconds or the mode is

changed to another mode than PLAY.

EC1 or EU1:

Head clog warning

E0A:Supply Reel

Pulse EMG

E07:SW Power

Short-Circuit

EMG

E06:Capstan FG

EMG

E05:Cassette Eject

EMG

E04: Drum FG

EMG

E03:Take Up Reel

Pulse EMG

E02:

Unloading EMG

E01:Loading EMG

E08:

DD Initialized

(Absolute

Position

Sensor)

EMG

E09: DD FG EMG

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JVC SR-VS30U User manual