JVC SR-VS30E/EK Service Manual

SERVICE MANUAL

Mini DV/S-VHS VIDEO CASSETTE RECORDER

SR-VS30E/EK

TV

VHSDV

CABLE/SAT

– –:– –

LCD PROG

1

AUDIO

TV/VCR

2

123

3

456

DAILY/QTDN.

VPS/PDC

WEEKLY/HEBDO

4

789

4

0000

AUX

MENU

0

ENTER/ENTREE

OK

1

PROG

30

SEC

3

2

START

STOP

DATE

PR

DEBUT

FIN

EXPRESS

P

V

R

T

+

+

T

V

–

PULL-OPEN
TIRER-OUVRIR

V

T

–

T

R

V

P

DV

DUB

VHS

DV

COPIE

PR / +
PUSH / TURN

VHS

EXPRESS

1

24H

32

PULL-OPEN
TIRER-OUVRIR

625

SPECIFICATIONS

GENERAL

Power requirement : AC 220 V - 240 Vd, 50 Hz/60 Hz
Power consumption

Power on : 31 W
Power off : 6.5 W

Temperature

Operating :

Storage :
Operating position : Horizontal only
Dimensions (WxHxD)

Weight : 5.1 kg
Input/Output : 21-pin SCART connectors:

VHS DECK VIDEO/AUDIO

Signal system : PAL-type colour signal and CCIR

Recording system : DA4 (Double Azimuth) head helical

Format : S-VHS/VHS PAL standard
Signal-to-noise ratio: 45 dB
Horizontal resolution

(SP/LP) : 250 lines (VHS)

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

Maximum recording time

(SP) : 240 min. with E-240 video cassette

(LP) : 480 min. with E-240 video cassette

5°C to 40°C
–20°C to 60°C

: 435 mm x 106 mm x 380 mm

IN/OUT x 1, IN/DECODER x 1
RCA connectors:
VIDEO IN x 1, AUDIO IN x 1,
AUDIO OUT x 1
S-Video connectors:
IN x 1, OUT x 1
DV connector:
IN/OUT x 1 (4-pin, IEEE1394
conformity, digital input/output)

monochrome signal, 625 lines
50 fields

scan system

400 lines (S-VHS)

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

(The specifications shown pertain specifically to the model SR-VS30E.)

DV DECK VIDEO/AUDIO

Signal system : PAL-type colour signal, 625 lines

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

TUNER/TIMER

TV channel storage capacity

Tuning system : Frequency synthesized tuner
Channel coverage : VHF 47 MHz

Memory backup time

ACCESSORIES

Provided accessories

Specifications shown are for SP mode unless otherwise specified.
E.& O.E. Design and specifications subject to change without
notice.

50 fields

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

32 kHz, 12 bit (4 ch)

: 99 positions (+AUX position)

104 MHz
302 MHz

–

300 MHz/

–

470 MHz

UHF 470 MHz

: Approx. 10 min.

: RF cable,

21-pin SCART/RCA cable,
BNC/RCA adapter x 2,
Satellite Controller,
Infrared remote control unit,
"R6" battery x 2

–

89 MHz/

–

862 MHz

SR-VS30E/EK V14SD1

This service manual is printed on 100% recycled paper.

COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD

No.82910

March 2002

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 DISASSEMBLY AND 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>.............................. 1-1 1

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 Holder Assembly........................................................... 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 Lever Assembly, 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

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

2.2.17

2.2.18 Capstan Brake Assembly......................................................... 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 Arm Assembly ...............................................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

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

2.3.2

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

2.3.3

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

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

2.5

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

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

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

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

2.7

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

2-13

2-17
2-17

2-21

2-24

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

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

2.13

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 SYSCON CIRCUIT ...........................................................................3-4

3.5.1 Timer clock................................................................................... 3-4

ELECTRICAL ADJUSTMENT (DV)

3.6 PREPARATION.................................................................................3-5

3.6.1 Precautions .................................................................................. 3-5

3.6.2 Equipment required for adjustment ..............................................3-5

3.6.3 Tools required for adjustments ..................................................... 3-5

3.6.4 Setup............................................................................................ 3-5

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.......................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

MAIN (VIDEO I/O & SUB EMPHA) SCHEMATIC DIAGRAM ..................

4.6

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...................................4-25

POWER SW, SW/DISPLAY AND JOG SCHEMATIC DIAGRAMS...................

4.13

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 ................................................4-39

4.20 DV AUDIO AD/DA SCHEMATIC DIAGRAM .................................4-40

4.21 MAIN(ON SCREEN) SCHEMATIC DIAGRAM .............................4-41

4.22 REMOTE CONTROL SCHEMATIC DIAGRAM ............................ 4-42

4.23 SWITCHING REGULATOR CIRCUIT BOARD .............................4-43

4.24 MAIN CIRCUIT BOARD................................................................ 4-45

4.25 3D DIGITAL/2M CIRCUIT BOARD ............................................... 4-48

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

4.26

4.27 TERMINAL CIRCUIT BOARD.......................................................4-51

4.28 DV MAIN CIRCUIT BOARD.......................................................... 4-53

4.29 WAVEFORMS ............................................................................... 4-55

4.30 VOLTAGE CHARTS......................................................................4-57

FDP GRID ASSIGNMENT AND ANODE CONNECTION .................

4.31

4.32 CPU PIN FUNCTION ....................................................................4-60

4.33 SYSTEM CONTROL BLOCK DIAGRAM (VHS) ........................... 4-61

4.34 VIDEO BLOCK DIAGRAM(VHS) .................................................. 4-63

4.35 AUDIO BLOCK DIAGRAM (VHS) .................................................4-67

4.36 SYSTEM CONTROL BLOCK DIAGRAM (DV) .............................4-69

4.37 VIDEO BLOCK DIAGRAM (DV) ...................................................4-71

5. PARTS LIST

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

5.2 FINAL ASSEMBLY <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 BOARD ASSEMBLY <01> ........................................ 5-8

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

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

TERMINAL BOARD ASSEMBLY <06> ................................................. 5-19

AUDIO CONTROL HEAD BOARD ASSEMBLY <12> ..........................5-20

DEMOD BOARD ASSEMBLY <14>......................................................5-20

POWER SW BOARD ASSEMBLY <27>...............................................5-21

SW/DISPLAY BOARD ASSEMBLY <28> .............................................5-21

DV MAIN BOARD ASSEMBLY <50> ....................................................5-22

LOADING MOTOR BOARD ASSEMBLY <55>.....................................5-27

JOG BOARD ASSEMBLY <85>............................................................5-27

2-39

4-13

4-27

4-49

4-59

The following table lists the differing points between models SR-VS30EK and SR-VS30E.

ITEM

MODEL

SR-VS30EK

SR-VS30E

POWER PLUG 3PIN(CLASS II) CEE(CLASSII)
VIDEO SYSTEM PAL/NTSC ON PAL TV PAL/MESECAM(MANUAL)/NTSC ON PAL TV
BROADCASTING STANDARD I B/G, D/K
STEREO DECODER NICAM NICAM/A2
VCR PLUS+

VIDEO PLUS+ DELUXE

SHOWVIEW DELUXE

LANGUAGE[INITIAL](ON SCREEN DISPLAY) ENGLISH 10 LANGUAGE [E]

Important Safety Precautions

cut close to connector

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.

v

Precautions during Servicing

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 com­ply with these and other cautionary notices appearing in the
operation and service manuals.

2. Parts identified by the
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.

symbol and shaded ( ) parts are

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 or­der 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.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.1

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.

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 cath­ode 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.

Fig.4

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

the wires fully into the connector.

Metal sleeve

Connector

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.

1.25

2.0

5.5

Fig.6

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

Not easily pulled free

Wire insulation recessed

more than 4 mm

Fig.7

Crimping tool

Crimped at approx. center

of metal sleeve

Conductors extended

1

S40888-01

v

d'

d

Chassis

Power cord,
primary wire

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 compli­ance 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’) be­tween soldered terminals, and between terminals and surrounding metallic parts. See table 1
below.

Fig. 8

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 accessi­ble parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and
following table 2.

Externally
exposed
accessible part

Z
V

Fig. 9

ab

c

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.

AC inlet

Earth pin

AC Line Voltage

100 V

100 to 240 V

110 to 130 V

110 to 130 V

200 to 240 V

Exposed accessible part

Milli ohm meter

Fig. 10

Region

Japan

USA & Canada

Europe & Australia R 10 MΩ/500 V DC

Region Load Z

Insulation Resistance (R)

≤

R 1 MΩ/500 V DC

≥≥

1 MΩ R 12 MΩ/500 V DC

≤

Table 1 Specifications for each region

Grounding Specifications

Region

USA & Canada

Europe & Australia

Dielectric Strength

AC 1 kV 1 minute

AC 1.5 kV 1 miute

AC 1 kV 1 minute
AC 3 kV 1 minute

AC 1.5 kV 1 minute

(Class 2)

(Class 1)

Grounding Impedance (Z)

≤

Z 0.1 ohm

≤

Z 0.5 ohm

Clearance Distance (d), (d')

≤

d, d' 3 mm

≤

d, d' 4 mm

≤

d, d' 3.2 mm

≤

d 4 mm

≤

d' 8 mm (Power cord)

≤

d' 6 mm (Primary wire)

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

100 V

110 to 130 V

110 to 130 V

220 to 240 V

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

Japan

USA & Canada

Europe & Australia

Table 2 Leakage current specifications for each region

1 kΩ

0.15 µF

1.5 kΩ

2 kΩ

50 kΩ

2

≤

i 1 mA rms Exposed accessible parts

≤

i 0.5 mA rms

≤

i 0.7 mA peak

≤

i 2 mA dc

≤

i 0.7 mA peak

≤

i 2 mA dc

Exposed accessible parts

Antenna earth terminals

Other terminals

S40888-01

SECTION 1

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

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

< TOP VIEW >

1. COMMON section

2. VHS section

1.3 DISCONNECTION OF CONNECTORS (WIRES)

3. DV section

Fig. 1-1-1

1.2 HOW TO READ THE DISASSEMBLY AND ASSEMBLY

Step/

Loc No.

1

Top cover, Bracket COM1
Front panel

2

assembly

Fig. No.

COM2 8(L3),

§§ §§ §

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

(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

Point NotePart name

4(S1), 3(S2), 2(L1), (L2)
2(S3)

CN7507(WR1),
CN3011(WR2)

<Note
1,2,3,4>

—

1-1

1.4

HOW TO REMOVE THE MAJOR PARTS <COM section>

1.4.1 Disassembly flow chart

This flowchart shows the disassembly procedure for the ex­terior parts and electrical parts.
Basically, reverse this procedure when assembling them.

[1] Top cover, Bracket

[2] Front panel assembly

(S1a)

[1] Top cover

(S1b)

(S1b)

SW/Display board assembly, Power SW board assembly,

[3]

Jog board assembly

[4] SW REG board assembly

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

[5]

Disassembly/assembly method <COM section>

1.4.2

Step/

Loc No.

Top cover

[1]

Bracket
Front panel

[2]

assembly

SW/Display board assembly

[3]

Power SW board assembly
Jog board assembly
SW REG board

[4]

assembly

[5]

Foot assembly
Foot(center)
Foot(rear)

Bottom cover

Fig. No.

4(S1a), 2(S1b)

COM1

2(S1c)

COM2 8(L2a),

CN7510(WR2a),
CN3011(WR2b)

COM3 8(S3a)

2(S3b)
2(S3c),Knob(Jog)

COM4 4(S4a),

CN5322(WR4a),
CN5321(WR4b),
CN5325(WR4c),
CN5324(WR4d),
CN5323(WR4e)

COM5Lug wire

(S5a)
5(L5a)

4(L5b), 9(L5c),
2(L5d)

Point NotePart name

—

<Note 2a,
2b, 2c,2d>

—

<Note 2a>

<Note 5a>

<Note 2a>

• When attaching the FPC, be sure to connect it in the cor­rect 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.

<Note 2b>

When attaching the Front panel assembly, make sure that
the door openers of both decks (DV, VHS) are in the down
position.

<Note 2c>

When attaching the Front panel assembly, be careful not
to damage the DV terminals.

<Note 2d>

When attaching (WR2a) and (WR2b), insert supporting
long side to connector in the Main board assembly.

<Note 3a>

When attaching Jog board assembly, attach it before SW/
Display board assembly.

<Note 5a>

When removing Bottom cover, remove it after VHS sec­tion parts and DV section parts.

<Note 2b>
DV SIDE

(L2a)

DV terminals
<Note 2c>

(L2a)

(S1c)

[1] Bracket

Fig. COM1

CN3011

(L2a)

(WR2b)

<Note 2a, 2b>

[2] Front panel assembly

Fig. COM2

<Note 2b>

CN7510

VHS SIDE

(WR2a)
<Note 2a, 2d>

(L2a)

(S1a)

1-2

[2] Front panel assembly

Knob (Jog)

[5] Lug wire

(S5a)

(L5a)

(L5a)

(L5d)

(L5a)

(S3a)

(S3a)

(S3c)

(S3a)

(S3c)

(S3a)

(S3a)

(S3a)

[4] SW.REG board assy

[3]

(S3a)

(S3a)

Fig. COM3

(S4a)

Jog board assembly
<Note 3a>

SW/Display board
assembly

(S3b)

(S3b)

Power SW board
assembly

(L5a)

(L5b)

[5] Foot assy

(L5c)

[5] Foot(center)

[5] Foot(rear)

(L5a)

(L5b)

[5] Foot assy

Fig. COM5

(L5c)

(L5b)

[5] Bottom cover

(L5c)

[5] Foot(rear)

CN5324

(WR4d)

<Note 2a>

(WR4e)

<Note 2a>

(S4a)

CN5323

(S4a)

Fig. COM4

(S4a)

CN5325

CN5322

CN5321

(WR4c)
<Note 2a>

(WR4a)
<Note 2a>

(WR4b)
<Note 2a>

1-3

1.5

HOW TO REMOVE THE MAJOR PARTS <VHS section>

1.5.1 Disassembly flow chart

This flowchart shows the disassembly procedure for the ex­terior 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 as­sembly” in advance. (See section 1.4.)

[1] Drum assembly

[2] Mechanism assembly

[3] Main board assembly

1.5.2 DIsassembly/assembly method <VHS section>

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 un­screwed when removing the Mechanism assembly.

Fig. 2

Fig. 1

Step/

Loc No.

Drum assembly

[1]

(Inertia plate)
(Roller arm assy)
Mechanism

[2]

assembly

Main board

[3] <Note 1b>

assembly

Fig. No.

V1

V2

V3 (S8a), 6(L8a),

Point NotePart name

CN1(WR6a),
CON1(WR6b),
(S6a), (S6b), (S6c)

4(L6a)
(P6a), (L6b)
(S7a), (S7b), (S7c),

(S7d), 2(L7a),
CN1(WR7a)

CN701(WR8a),
CN2601(WR8b),
CN3014(WR8c)

<Note 1a,1b>

<Note 1b,
2a, 2b, 2c>

<Note 1a>

When attaching or removing the FPC, take care not to dis­connect any of the wires.

<Note 1b>

• When attaching the FPC, be sure to connect it in the cor­rect orientation.

• When removing or attaching the WIRE/FPC, refer to "1.7
CONNECTION"(page 1-8) at same time.

<Note 2a>

When it is required to remove the screws ((S7a), (S7b),
(S7c) and (S7d)) retaining the Mechanism assembly , please
refer to the “Procedures for Lowering the Cassette holder
assembly”(See on page 1-4).

<Note 2b>

• 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 sen­sor, 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.

Fig. 3

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.

Procedures for Lowering the Cassette holder assembly

Note: When installing the Drum assembly, secure the screws

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

Inertia plate

(S6c)

Roller arm
assy

(S6a)

(L6a)

(P6a)

(L6b)

[1]
Drum
assembly

CON1

CN1

(WR6b)

<Note 1b>

(S6b)

(WR6a)

<Note 1a,1b>

Cleaner assy

(L6c)

Not used

<Note 2c>

• When removing the Mechanism assembly only, 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.

1-4

Fig. V1

Note:

(S8a)

(L8a)

(L8a)

CN2601

CN701

CN3014

[3] Main board

assembly

(WR8a)

<Note 1b>

(WR8b)

<Note 1b>

(WR8c)

<Note 1b>

Make a crease on the position where
the dotted line is not exceeded.

A/C head base

(WR7a)

Note:
When installing the
Mechanism assembly,
secure the screws
(S7a to S7b) in the
order of a, b.

[2]
Mechanism
assembly

(S7b)

<Note 2a>

(L7a)

spacer

<Note 2c>

(S7d)

Q3003

Q3003

End sensor

<Note 2b>

D3001

(WR7a)
<Note 1b>

CN2

(S7a)

<Note 2a>

CN1

Q3002

S3002

S3002
S cassette switch
<Note 2b>

CN2
<Note 2b>

(S7c)

D3001
LED
<Note 2b>

<Note 2c>

Q3002
Start sensor
<Note 2b>

(L7a)

spacer

Fig. V3

Fig. V2

1-5

1.6

HOW TO REMOVE THE MAJOR PARTS <DV section>

1.6.1 Disassembly flow chart

This flowchart shows the disassembly procedure for the ex­terior 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 as­sembly” in advance. (See section 1.5.)

(S9b)

(S9a)

(S9a)

(S9a)

[1] Base(DV)

[2] DV Mechanisam assembly, DV Main board assembly

[3] DV MDA board assembly

1.6.2 Disassembly/assembly method <DV section>

Step/

Loc No.

[1]
[2]

[3]

Base(DV)
DV Mechanism

assembly

DV Main board
assembly

DV MDA board
assembly

Fig. No.

D1 3(S9a), (S9b)
D2 3(S10a),

D3 2(S11a), 2(S11b),

Point NotePart name

CN1502(WR10a),
CN4001(WR10b)
CN1501(WR10c)

4(S10b)

2(L11a),
CN5503(WR11a),
CN5504(WR11b),
CN5502(WR11c),
CN5505(WR11d),
CN5507(WR11e),
Bracket(MDA)

<Note 1a>
<Note 2a,

2b, 2c>

<Note 2c>

<Note 1a>

With due regard to operational considerations, remove the
parts located on the Base(DV) (i.e. DV Mechanism assem­bly, DV MDA board assembly etc.) together before remov­ing the major parts.

<Note 2a>

Take care not to scratch or damage the drum assembly
by the cleaner assembly when performing work.

<Note 2b>

Take care not to damage the board assembly when de­taching parts.

<Note 2c>

• When attaching the FPC, be sure to connect it in the cor­rect orientation.

• When removing or attaching the WIRE/FPC, refer to "1.7
CONNECTION"(page 1-8) at same time.

Lug wire

(S9b)
Lug wire

Base(DV)
Bottom chassis

When reattaching (S9b), attach
in the order of the above figure.

Fig. D1

[2] Mechanism
assembly(DV)
<Note 2a>

[1] Base(DV)

[2] DV Main
board assembly
<Note 2b>

(S10a)

(S10b)

CN1502

(S10a)

(WR10a)
<Note 2c>

CN4001

(WR10c)
<Note 2c>

(WR10b)
<Note 2c>

CN4001

CN1501

1-6

(S10b)

CN1502

(S10b)

Fig. D2

[3] DV MDA board assembly

5

(S11a)

CN5504

Bracket(DV)

(WR11b)
<Note 2c>

3

(S11b)

2

5

(S11a)

(S11b)

3

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

CN5505

CN5503

1

4
(WR11a)
<Note 2c>

CN5507

3

(L11a)

(WR11d)
<Note 2c>

CN5502

1

(WR11c)
<Note 2c>

1

5

1

(WR11e)
<Note 2c>

Fig. D3

1-7

1.7 CONNECTION

Treat the wire so as not to come to fan.

right side

7

CN5323

CN1001

right side

bend

right side

6

11

CN5501

DV DRUM

FAN

bend

CN3701

18

14

bend

CN5506

back side

CN1501

16

right side

TERMINAL PWB

5

Hold wire by stylepin.

3

ST2

12

right side

CN502CN901

right side

15

right side

make a crease

4

8

CN1

right side

CN3001

right side

A

10

right side

A/C HEAD

bend

13

back side

DRUM

Should be confirmed that wire not
touch to IC of STATOR PWB ASS'Y.

9

B

17

NOTE) Wire the wires as

shown in a figure.

21

CN1502

CN5502

NOTE) Wire the wires as shown in a figure.
NOTE) Put the surplus

wire into this space.

"D"

CN5505

22

CN5503

19

CN5507

back side

To SW/Display board

CN7001

NOTE) Twist a wire one time.

20

2

To SW/Display board

CN7191

1

back side

C

1-8

NOTE) Wire the wires as shown in a figure.

Fig. 1-7-1

DETAIL"A"

Absorb the looseness of
the wire in the B part.

B

CN1

MAIN PWB

WIRING for MECHA ADJ

DRUM

DETAIL"B"

DV MAIN
PWB

FINAL WIRING

DV MECHA

CN1502

electrode side

Push into the BOTTOM CHASSIS
and treat the wire according
to the following figure.

BOTTOM
CHASSIS

DETAIL"C"

FRONT
PANEL

Absorb the looseness of the wire
according to the following figure.

BOTTOM CHASSIS

CN7510

MAIN PWB

CN3011

DETAIL "D"

DV MDA BOARD ASSEMBLY

CN5504

23

BRACKET(DV)

AC/ HEAD

right side

(WR7a)

AC/ HEAD

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.

Fig. 1-7-2

Fig

No.

Symbol

Connected point

Connection

Connected point

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 9 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

Table 1-7-1

1-9

1.8 SERVICE POSITIONS

The servicing locations for use in troubleshooting or servic­ing of the set are provided separately for the VHS and DV.

I SERVICE POSITIONS <VHS SIDE>
II SERVICE POSITIONS <DV FOIL SIDE>

III SERVICE POSITIONS <DV COMPONENT SIDE>

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

1.8.2 Service position <VHS SIDE>
<Removal>

(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.

1.8.3 Service position <DV FOIL SIDE>
<Removal>

(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.

DV Mechanism

Insulation Sheet

assembly

DV Main board
assembly

CN1502

CN3501

Base(DV)

CN3701

CN1503

Front panel assembly

CN2601

CN701

CN7001

CN3014

CN3011

CN7510

CN7191

Fig. 1-8-2

CN2601

CN7509

Main board assembly

1-10

CN701

CN7508

CN5322

CN3011

CN3014

CN5321

CN7510

Fig. 1-8-1

CN1503
CN3701
CN3501

1

2

CN7191

CN7001

Front panel assembly

1.8.4 Service position <DV COMPONENT SIDE>
<Removal>

(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).

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 serv­icing.

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.

DV Mechanism
assembly

Insulation Sheet

CN4001

DV Main board
assembly

3

Front panel assembly

Fig. 1-8-3

CN7001

CN1502

CN3011

CN7510

CN7191

1-11

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.

(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 “Pro­cedures for Lowering the Cassette holder assembly” on
page 1-4 of 1.5 HOW TO REMOVE THE MAJOR PARTS
<VHS section>

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

completed, the mechanism enters the desired mode.

bend

right side

DV MAIN BOARD

ASSEMBLY

SW/REG BOARD

ASSEMBLY

CP5321

CN1001

right side

CN5501

DV DRUM

FAN

right side

CP5322

CN5323

CN3701

bend

back side

CP5325

bend

CN5506

CN2001
(JIG CONN.)

CN1501

TERMINAL BOARD ASSEMBLY

right side

TP701
D YV IN

ST2

right side

MAIN BOARD

ASSEMBLY

DRUM

back side

bend

3D DIGITAL/2M BOARD ASSEMBLY

VR701
D YV IN

CN1

CN502CN901

right side

CP3004

right side

VR1401

right side

make a crease

CN3001

right side

A/C HEAD

DEMOD BOARD
ASSEMBLY

right side

CP4001

CP3003

TP111
D.FF

TP4001
CTL. P

TP106
PB. FM

TP2253
A. PB.FM

1-12

DV MDA BOARD

ASSEMBLY

FW7002

DV MECHANISM

ASSEMBLY

POWER SW BOARD

ASSEMBLY

CN1502

FW7001

back side

SW/DISPLAY BOARD ASSEMBLY

<FRONT PANEL ASSEMBLY>

Fig. 1-10-1

VHS MECHANISM ASSEMBLY

JOG BOARD

CN7001

CN7191

back side

ASSEMBLY

TPGND
TP7001

TEST

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 mo­ment an emergency occurred can also be confirmed.

FDP display model
[FDP display]

0: 00 : 00

E:**:**

*1: *2 :34
*5: *6 : *7

FDP (7segment LED) display model
[FDP display]

0: 00

E: **

1: **

2: *1

3: *2

4: 34

5: *5

6: *6

7: *7

OSD display model
[OSD display]

Normal display

EMG content display
(E:Latest:Previous)

EMG detail information <1>
EMG detail information <2>

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
E:**:**
*1: *2 : 34

*5: *6 : *7

EMG content display
(E:Latest:Previous)

EMG detail information <1>
EMG detail information <2>

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).

Jig RCU

[Data transmitting method]
Depress the “ ” ( 3 ) button
after the data code is set.

CUSTOM CODE
43: A CODE

DATA CODE

INITIAL MODE

Fig. 1-11a Jig RCU [PTU94023B]

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:**:**”.

<Example 1> E : 01 : 03

Previous EMG

Latest EMG

<Example 2> E : –– : – –

No EMG record

(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 descrip­tion”.

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

(EMG-02e)

1-13

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

FDP CONTENT CAUSE

E01:Loading EMG

E02:

Unloading EMG

E03:Take Up Reel

Pulse EMG

E04: Drum FG

EMG

E05:Cassette Eject

EMG

E06:Capstan FG

EMG

E07:SW Power

Short-Circuit
EMG

E08:

DD Initialized
(Absolute
Position
Sensor)
EMG

E09: DD FG EMG

E0A:Supply Reel

Pulse EMG

EC1 or EU1:
Head clog warning

When the mechanism mode cannot be changed to an­other 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 an­other 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 iden­tified, the pinch rollers are turned off and stopped, and
the power is turned off.

When the eject operation does not complete in 3 sec­onds 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 sec­onds, [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.

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.

The mechanism is locked in the middle of mode transition.

1.
2

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

reading error during mode transition.

3.

Power is not supplied to the loading MDA.

1.

The mechanism is locked in the middle of mode transition.

2.

The mechanism is locked at the unloading end due to the encoder posi­tion reading error during mode transition.

3.

Power is not supplied to the loading MDA.

1.

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-

2)
ing due to too large mechanical load (abnormal tension);

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

2.

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.

3.

Power is not supplied to the reel sensors.

1.

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.

2)

2.

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.

3.

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

4.

Power is not supplied to the drum MDA.

1.

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

2.

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 tempera­ture, etc.), mechanism wear or failure.

3.

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

4.

The loading motor drive voltage is lower than specified or power is not sup­plied to the motor (MDA).

5.

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.

1.

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.).

2.

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.

3.

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

4.

Power is not supplied to the capstan MDA.

1.

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

2.

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.

4.

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.)

6.

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/

1.
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.

2.

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.

3.

The power to a reel sensor is not supplied.

1-14

Table 1-11-3a

1.11.4 EMG detail information <1>

The status (electrical operation mode) of the VCR and the sta­tus (mechanism operation mode/sensor information) of the
mechanism in the latest EMG can be confirmed based on the
figure in EMG detail information <1> .

[FDP/OSD display]

*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

Note:

• For EMG detailed information <1>, the content of the code
that is shown on the FDP (or OSD) differs depending on
the parts number of the system control microprocessor
(IC3001) of the VCR. The system control microprocessor
parts number starts with two letters, refer these to the cor­responding table.

*1 : Deck operation mode
[Common table of MN*, HD* and M3*]

Display

MN*/M3* HD*

00 - Mechanism being initialized
01 00 STOP with pinch roller pressure off (or tape present with P.OFF)
02 01 STOP with pinch roller pressure on
03 - POWER OFF as a result of EMG
04 04 PLAY
0C 0E REC
10 11 Cassette ejected
20 22 FF
21 - Tape fully loaded, START sensor ON, short FF
22 - Cassette identification FWD SEARCH before transition to FF (SP

24 26 FWD SEARCH (variable speed) including x2-speed
2C 2E INSERT REC
40 43 REW
42 - Cassette identification REV SEARCH before transition to REW (SP

44 47 REV SEARCH (variable speed)
4C 4C AUDIO DUB
6C 6E INSERT REC (VIDEO + AUDIO)
84 84 FWD STILL / SLOW
85 85 REV STILL / SLOW
8C 8F REC PAUSE
8D - Back spacing

8E - Forward spacing (FWD transport mode with BEST function)
AC AF INSERT REC PAUSE
AD - INSERT REC back spacing
CC CD AUDIO DUB PAUSE
CD - AUDIO DUB back spacing
EC EF INSERT REC (VIDEO + AUDIO) PAUSE
ED - INSERT REC (VIDEO + AUDIO) back spacing

x7-speed)

x7-speed)

Deck operation mode

*2 : Mechanism operation mode
[Common table of MN* and M3*]

Display

MN* M3*

00 00 Command standby (Status without executing command)
02 02 POWER OFF by EMG occurrence
04 04 Moving to the adjacent position in the LOAD direction
06 06 Moving to the adjacent position in the UNLOAD direction
08 08 Cassette ejection being executed / Cassette housing ejection being

- 0A Mode transition to STOP with cassette ejection end
0A 0C Cassette insertion being executed
0C 0E Tape being loaded
0E 10 Tape being unloaded

10 12 Mode transition to STOP with pinch roller compression ON
12 14 Mode transition to STOP with pinch roller compression OFF
14 16

16 18

18 1A Mode transition to PLAY
1A 1C Mode transition to FWD SEARCH
1C 1E Mode transition to REC
1E 20 Mode transition to FWD STILL / SLOW

20 22 Mode transition to REV STILL / SLOW

22 24 Mode transition to REV SEARCH

24 26 Mode transition from FF / REW to STOP

26 28 Mode transition to FF

28 2A Mode transition to REW
2A 2C 4 sec. of REV as a result of END sensor going ON during loading
2C 2E
2E 30 Mechanism position being corrected due to overrun

80 80 Mechanism in initial position (Dummy command)

executed

Mode transition to STOP with pinch roller compression OFF as a result
of POWER OFF
Mode transition to STOP with pinch roller compression ON as a result
of POWER ON

Short FF / REV as a result of END sensor going ON during unloading

Mechanism operation mode

[Table of HD*]

Display

00 STOP with pinch roller pressure off
01 STOP with pinch roller pressure on
02 U/L STOP (or tape being loaded)
04 PLAY
05 PLAY (x1-speed playback using JOG)
0E REC
11 Cassette ejected
22 FF
26 FWD SEARCH (variable speed) including x2-speed
2E INSERT REC
43 REW
47 REV SEARCH
4C AUDIO DUB
6E INSERT REC (VIDEO + AUDIO)
84 FWD STILL/SLOW
85 REV STILL/SLOW
8F REC PAUSE
AF INSERT REC PAUSE
C7 REV SEARCH (x1-speed reverse playback using JOG)
CD AUDIO DUB PAUSE
EF INSERT REC (VIDEO + AUDIO) PAUSE
F0 Mechanism being initialized
F1 POWER OFF as a result of EMG
F2 Cassette being inserted
F3 Cassette being ejected
F4 Transition from STOP with pinch roller pressure on to STOP with pinch

roller pressure off
F5 Transition from STOP with pinch roller pressure on to PLAY
F6 Transition from STOP with pinch roller pressure on to REC
F7 Cassette type detection SEARCH before FF/REW is being executed
F8 Tape being unloaded
F9 Transition from STOP with pinch roller pressure off to STOP with pinch

roller pressure on
FA Transition from STOP with pinch roller pressure off to FF/REW
FB Transition from STOP with pinch roller pressure off to REC.P (T.REC,etc.)
FC Transition from STOP with pinch roller pressure off to cassette type de-

tection SEARCH
FD Short REV being executed after END sensor on during unloading
FE Tension loosening being executed after tape loading (STOP with pinch

roller pressure on)

Mechanism operation mode

1-15