Hitachi vt-fx240e Service Manual

TK No. 5204E

VT-FX240EUK

SERVICE MANUAL

VT-MX210EUK

This video deck is VHS type video
recorder. For proper operation, only
the VHS type cassette must be
used.

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

VIDEO CASSETTE RECORDER

June 2002

Digital Media Division, Tokai

CONTENTS

CHAPTER 1 GENERAL INFORMATION

SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1-1

FUNCTION INDICATOR SYMBOLS . . . . . . . . . . . . . . 1-2-1

IMPORTANT SAFETY PRECAUTIONS . . . . . . . . . . . . 1-3-1

Product Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-1

Precautions during Servicing. . . . . . . . . . . . . . . . . . . . 1-3-1

Safety Check after Servicing . . . . . . . . . . . . . . . . . . . . 1-3-2

STANDARD NOTES FOR SERVICING . . . . . . . . . . . . 1-4-1

Circuit Board Indications . . . . . . . . . . . . . . . . . . . . . . . 1-4-1

Instructions for Connectors . . . . . . . . . . . . . . . . . . . . . 1-4-1

How to Remove/Install Flat Pack-IC . . . . . . . . . . . . . . 1-4-1

Instructions for Handling

Semi-conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4-3

PREPARATION FOR SERVICING . . . . . . . . . . . . . . . . 1-5-1

How to Enter the Service Mode. . . . . . . . . . . . . . . . . . 1-5-1

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 1-6-1

ORERATING CONTROLS AND FUNCTIONS . . . . . . . 1-7-1

CHAPTER 2 DISASSEMBLY AND ADJUSTMENT

CABINET DISASSEMBLY INSTRUCTIONS . . . . . . . . 2-1-1

1. Disassembly Flowchart . . . . . . . . . . . . . . . . . . . . . . 2-1-1

2. Disassembly Method . . . . . . . . . . . . . . . . . . . . . . . . 2-1-1

DISASSEMBLY/ASSEMBLY PROCEDURES OF

DECK MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2-1

ALIGNMENT PROCEDURES OF MECHANISM . . . . . 2-3-1

ELECTRICAL ADJUSTMENT INSTRUCTIONS . . . . . 2-4-1

Test Equipment Required . . . . . . . . . . . . . . . . . . . . . . 2-4-1

Head Switching Position Adjustment. . . . . . . . . . . . . . 2-4-1

FIXTURE AND TAPE FOR ADJUSTMENT . . . . . . . . . 2-5-1

How to Use The Fixtures. . . . . . . . . . . . . . . . . . . . . . . 2-5-1

MECHANICAL ALIGNMENT PROCEDURES . . . . . . . 2-6-1

Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6-1

1.Tape Interchangeability Alignment. . . . . . . . . . . . . . 2-6-2

1-A.Preliminary/Final Checking and

Alignment of Tape Path . . . . . . . . . . . . . . . . . . . 2-6-3

1-B.X Value Alignment . . . . . . . . . . . . . . . . . . . . . . . . 2-6-3

1-C.Checking/Adjustment of Envelope Waveform . . . 2-6-4
1-D.Azimuth Alignment of

Audio/Control/Erase Head . . . . . . . . . . . . . . . . .2-6-4

STANDARD MAINTENANCE . . . . . . . . . . . . . . . . . . . . 2-7-1

Service Schedule Components . . . . . . . . . . . . . . . . . . 2-7-1

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7-2

CHAPTER 4

SCHEMATIC DIAGRAMS/CBA’S AND

TEST POINTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-1

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-3

Main 1/5 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-4

Main 2/5 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-5

Main 3/5 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-6

Main 4/5 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-7

Main 5/5 Schematic Diagram ( VT-FX240EUK ). . . . . 4-1-8

Function Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-9

AFV Schematic Diagram ( VT-FX240EUK ) . . . . . . . 4-1-10

Jack Schematic Diagram. . . . . . . . . . . . . . . . . . . . . . 4-1-11

Main CBA Top View . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-12

Main CBA Bottom View. . . . . . . . . . . . . . . . . . . . . . . 4-1-13

Function/Power SW CBA Top/Bottom View . . . . . . . 4-1-14

AFV CBA Top/Bottom View. . . . . . . . . . . . . . . . . . . . 4-1-15

Jack CBA Top/Bottom View . . . . . . . . . . . . . . . . . . . 4-1-16

BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2-1

Servo/System Control Block Diagram . . . . . . . . . . . . 4-2-1

Video Block Diagram(VT-MX210EUK) . . . . . . . . . . . . 4-2-2

Video Block Diagram(VT-FX240EUK). . . . . . . . . . . . . 4-2-3

Audio Block Diagram(VT-MX210EUK) . . . . . . . . . . . . 4-2-4

Audio Block Diagram(VT-FX240EUK). . . . . . . . . . . . . 4-2-5

Hi-Fi Audio Block Diagram(VT-FX240EUK) . . . . . . . . 4-2-6

Power Supply Block Diagram . . . . . . . . . . . . . . . . . . . 4-2-7

SYSTEM CONTROL TIMING CHARTS . . . . . . . . . . . . 4-3-1

IC PIN FUNCTION DESCRIPTIONS . . . . . . . . . . . . . . 4-4-1

LEAD IDENTIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . 4-5-1

SCHEMATIC AND BLOCK DIAGRAMS/
CBA’S

CHAPTER 3 EXPLODED VIEWS AND PARTS LIST

EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1-1

Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1-1

Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1-2

Deck Mechanism View 1 . . . . . . . . . . . . . . . . . . . . . . . 3-1-3

Deck Mechanism View 2 . . . . . . . . . . . . . . . . . . . . . . . 3-1-4

Deck Mechanism View 3 . . . . . . . . . . . . . . . . . . . . . . . 3-1-5

REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . 3-2-1

Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . 3-2-1

Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2-3

CHAPTER 1 GENERAL INFORMATION

SPECIFICATIONS

VT-FX240EUK VT-MX210EUK

General Specifications

Television system: PAL I

Video heads Six comprising of Four-video

Tape width : 12.65mm
Tape speed

SP : 23.39mm/s
LP : 11.70mm/s

Tuner channel

RF converter : Built-in UHF converter
Converter output : UHF Channel 22 to 69

Timer indication : 24-hour system
Operating temperature : 5
Terminals

AERIAL : Coaxial type, male
RF OUT : Coaxial type, female
AUDIO/VIDEO : 21 pin scart socket x 2
AUDIO output

: RCA connector x 2

TV standard

and Two-audio heads
Helical scan system

IRA to IRJ
E21 to E69
CATV

(adjustable)

C to 40 C

Electrical Specifications

Video output level : 1Vp-p
Video output impedance : 75Ω unbalanced
Audio output level : -6dBv
Video input level : 0.5 to 2.0Vp-p
Audio input level : -10dBv
Video S/N ratio

(STANDARD): 45dB

Audio S/N ratio

(STANDARD): 41dB

General Specifications

Television system: PAL I

Video heads Rotary two-head

Tape width : 12.65mm
Tape speed

SP : 23.39mm/s
LP : 11.70mm/s

Tuner channel

RF converter : Built-in UHF converter
Converter output : UHF Channel 22 to 69

Timer indication : 24-hour system
Operating temperature : 5
Terminals

AERIAL : Coaxial type, male
RF OUT : Coaxial type, female
AUDIO/VIDEO :

TV standard

Helical scan system

IRA to IRJ
E21 to E69
CATV

(adjustable)

C to 40 C

21 pin scart socket x 2

Electrical Specifications

Video output level : 1Vp-p
Video output impedance : 75Ω unbalanced
Audio output level : -6dBv
Video input level : 0.5 to 2.0Vp-p
Audio input level : -10dBv
Video S/N ratio

(STANDARD): 45dB

Audio S/N ratio

(STANDARD): 41dB

Other Specifications

Power requirement : 220-240V to 50Hz
Power consumption : 20 Watts (Stand by:3.3 watts)
Dimensions : W 360mm

H 92mm
D 226mm

Weight : 2.6 kg. (approx.)

Designs and specifications are subject to change with­out notice.

Other Specifications

Power requirement : 220-240V to 50Hz
Power consumption : 20 Watts (Stand by: 3.3 watts)

Dimensions : W 360mm

H 92mm
D 226mm

Weight : 2.6 kg. (approx.)

1-1-1

FUNCTION INDICATOR SYMBOLS

Note:

The following symbols will appear on the indicator panel to indicate the current mode or operation of the VCR.
On-screen modes will also be momentarily displayed on the tv screen when you press the operation buttons.

Display panel

PWR. REC

" H "= LED Light on, " L "= LED Light off

LED MODE INDICATOR ACTIVE

CASSETTE "IN"
CASSETTE "OUT"

CLOCK " 88:88 "

POWER ON " PWR. " ON

REC " REC " ON

REC PAUSE " REC " Blinks at 0.8Hz interval

T-REC, OTR " " ON

When reel and capstan mechanism is not
functioning correctly

When tape loading mechanism is not func­tioning correctly

When cassette loading mechanism is not
functioning correctly

When the drum is not working properly " "

S-INH condition All modes Blinks at 0.8Hz interval

" "
" "

" PM "

" "
" 1 "

" "
" 2 "

" "
" 3 "

" 4 "

ON
OFF

ON
ON/OFF

(T-REC OFF, T-REC incomplete
Blinks at 0.8Hz interval)

Blinks at 0.8Hz interval

Blinks at 0.8Hz interval

Blinks at 0.8Hz interval

Blinks at 0.8Hz interval

1-2-1

IMPORTANT SAFETY PRECAUTIONS

Product Safety Notice

Some electrical and mechanical parts have special
safety-related characteristics which are often not evi­dent from visual inspection, nor can the protection
they give necessarily be obtained by replacing them
with components rated for higher voltage, wattage,
etc. Parts that have special safety characteristics are
identified by a ! on schematics and in parts lists. Use
of a substitute replacement that does not have the
same safety characteristics as the recommended
replacement part might create shock, fire, and/or other
hazards. The Product’s Safety is under review contin­uously and new instructions are issued whenever
appropriate. Prior to shipment from the factory, our
products are carefully inspected to confirm 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.

Precautions during Servicing

A. Parts identified by the ! symbol are critical for

safety. Replace only with part number specified.

B. In addition to safety, other parts and assemblies

are specified for conformance with regulations
applying to spurious radiation. These must also be
replaced only with specified replacements.
Examples: RF converters, RF cables, noise block­ing capacitors, and noise blocking filters, etc.

C. Use specified internal wiring. Note especially:

1)Wires covered with PVC tubing

2)Double insulated wires

3)High voltage leads

D. Use specified insulating materials for hazardous

live parts. Note especially:

1)Insulation tape

2)PVC tubing

3)Spacers

4)Insulators for transistors

E. When replacing AC primary side components

(transformers, power cord, etc.), wrap ends of
wires securely about the terminals before solder­ing.

F. Observe that the wires do not contact heat produc-

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

G. Check that replaced wires do not contact sharp

edges or pointed parts.

H. When a power cord has been replaced, check that

5 - 6 kg of force in any direction will not loosen it.

I. Also check areas surrounding repaired locations.

J. Use care that foreign objects (screws, solder drop-

lets, etc.) do not remain inside the set.

K. Crimp type wire connector

The power transformer uses crimp type connectors
which connect the power cord and the primary side
of the transformer. When replacing the transformer,
follow these steps carefully and precisely to pre­vent shock hazards.
Replacement procedure

1)Remove the old connector by cutting the wires at a
point close to the connector.

Important: Do not re-use a connector. (Discard it.)

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.

3)Align the lengths of the wires to be connected.
Insert the wires fully into the connector.

4)Use a crimping tool to crimp the metal sleeve at its
center. Be sure to crimp fully to the complete clo­sure of the tool.

L. When connecting or disconnecting the internal con-

nectors, first, disconnect the AC plug from the AC
outlet.

1-3-1

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 their original posi­tions. Afterwards, do the following tests and confirm
the specified values to verify compliance with safety
standards.

1. Clearance Distance

When replacing primary circuit components, confirm
specified clearance distance (d) and (d’) between sol­dered terminals, and between terminals and surround­ing metallic parts. (See Fig. 1)

Table 1 : Ratings for selected area

AC Line Voltage Clearance Distance (d) (d’)

220 to 240 V

Note: This table is unofficial and for reference only.

Be sure to confirm the precise values.

≥ 3mm(d)

≥ 6 mm(d’)

2. Leakage Current Test

Confirm the specified (or lower) leakage current
between B (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.) is lower than or equal to the specified value in the
table below.

Measuring Method (Power ON) :

Insert load Z between B (earth ground, power cord
plug prongs) and exposed accessible parts. Use an
AC voltmeter to measure across the terminals of load
Z. See Fig. 2 and the following table.

Chassis or Secondary Conductor

Primary Circuit Terminals

dd'

Exposed Accessible Part

Z

One side of

B

Power Cord Plug Prongs

AC Voltmeter
(High Impedance)

Fig. 1

Fig. 2

Table 2: Leakage current ratings for selected areas

AC Line Voltage Load Z Leakage Current (i)

2kΩ RES.

Connected in

parallel

220 to 240 V

50kΩ RES.

Connected in

parallel

Note: This table is unofficial and for reference only. Be sure to confirm the precise values.

1-3-2

i≤0.7mA AC Peak

i≤2mA DC

i≤0.7mA AC Peak

i≤2mA DC

One side of power cord plug

prongs (B) to:

Antenna terminals

A/V Input, Output

RF or

STANDARD NOTES FOR SERVICING

Circuit Board Indications

a. The output pin of the 3 pin Regulator ICs is indi-

cated as shown.

Top View

Out

b. For other ICs, pin 1 and every fifth pin are indicated

as shown.

Pin 1

c. The 1st pin of every male connector is indicated as

shown.

Input

In

Pin 1

Bottom View

5

10

How to Remove / Install Flat Pack-IC

1. Removal

With Hot-Air Flat Pack-IC Desoldering Machine:.

(1) Prepare the hot-air flat pack-IC desoldering

machine, then apply hot air to the Flat Pack-IC
(about 5 to 6 seconds). (Fig. S-1-1)

Fig. S-1-1

(2) Remove the flat pack-IC with tweezers while apply-

ing the hot air.

(3) Bottom of the flat pack-IC is fixed with glue to the

CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)

(4) Release the flat pack-IC from the CBA using twee-

zers. (Fig. S-1-6)

Instructions for Connectors

1. When you connect or disconnect the FFC (Flexible
Foil Connector) cable, be sure to first disconnect
the AC cord.

2. FFC (Flexible Foil Connector) cable should be
inserted parallel into the connector, not at an angle.

FFC Cable

Connector

CBA

* Be careful to avoid a short circuit.

Caution:

1. Do not supply hot air to the chip parts around the
flat pack-IC for over 6 seconds because damage
to the chip parts may occur. Put masking tape
around the flat pack-IC to protect other parts from
damage. (Fig. S-1-2)

2. The flat pack-IC on the CBA is affixed with glue, so
be careful not to break or damage the foil of each
pin or the solder lands under the IC when removing
it.

Hot-air
Flat Pack-IC
Desoldering

CBA

Masking
Tape

Tweezers

Machine

Flat Pack-IC

Fig. S-1-2

1-4-1

With Soldering Iron:

(1) Using desoldering braid, remove the solder from all

pins of the flat pack-IC. When you use solder flux
which is applied to all pins of the flat pack-IC, you
can remove it easily. (Fig. S-1-3)

Flat Pack-IC

Desoldering Braid

(4) Bottom of the flat pack-IC is fixed with glue to the

CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)

(5) Release the flat pack-IC from the CBA using twee-

zers. (Fig. S-1-6)

Note:

When using a soldering iron, care must be taken
to ensure that the flat pack-IC is not being held by
glue. When the flat pack-IC is removed from the
CBA, handle it gently because it may be damaged
if force is applied.

Soldering Iron

Fig. S-1-3

(2) Lift each lead of the flat pack-IC upward one by

one, using a sharp pin or wire to which solder will
not adhere (iron wire). When heating the pins, use
a fine tip soldering iron or a hot air desoldering
machine. (Fig. S-1-4)

Sharp
Pin

Fine Tip
Soldering Iron

Fig. S-1-4

(3) Bottom of the flat pack-IC is fixed with glue to the

CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)

(4) Release the flat pack-IC from the CBA using twee-

zers. (Fig. S-1-6)

With Iron Wire:

(1) Using desoldering braid, remove the solder from all

pins of the flat pack-IC. When you use solder flux
which is applied to all pins of the flat pack-IC, you
can remove it easily. (Fig. S-1-3)

(2) Affix the wire to a workbench or solid mounting

point, as shown in Fig. S-1-5.

(3) While heating the pins using a fine tip soldering

iron or hot air blower, pull up the wire as the solder
melts so as to lift the IC leads from the CBA contact
pads as shown in Fig. S-1-5

To Solid
Mounting Point

CBA

Tweezers

Hot Air Blower

or

Iron Wire

Soldering Iron

Fig. S-1-5

Fine Tip
Soldering Iron

Flat Pack-IC

Fig. S-1-6

1-4-2

2. Installation

(1) Using desoldering braid, remove the solder from

the foil of each pin of the flat pack-IC on the CBA
so you can install a replacement flat pack-IC more
easily.

(2) The “ I ” mark on the flat pack-IC indicates pin 1.

(See Fig. S-1-7.) Be sure this mark matches the 1
on the PCB when positioning for installation. Then
presolder the four corners of the flat pack-IC. (See
Fig. S-1-8.)

(3) Solder all pins of the flat pack-IC. Be sure that none

of the pins have solder bridges.

Example :

Pin 1 of the Flat Pack-IC
is indicated by a " " mark.

Fig. S-1-7

Instructions for Handling Semi-conductors

Electrostatic breakdown of the semi-conductors may
occur due to a potential difference caused by electro­static charge during unpacking or repair work.

1. Ground for Human Body

Be sure to wear a grounding band (1MΩ) that is prop­erly grounded to remove any static electricity that may
be charged on the body.

2. Ground for Workbench

Be sure to place a conductive sheet or copper plate
with proper grounding (1MΩ) on the workbench or
other surface, where the semi-conductors are to be
placed. Because the static electricity charge on cloth­ing will not escape through the body grounding band,
be careful to avoid contacting semi-conductors with
your clothing.

< Incorrect >

CBA

Presolder

Flat Pack-IC

Fig. S-1-8

CBA

< Correct >

Grounding Band

1MΩ

CBA

1MΩ

Conductive Sheet or
Copper Plate

1-4-3

PREPARATION FOR SERVICING

How to Enter the Service Mode

About Optical Sensors

Caution:

An optical sensor system is used for the Tape Start
and End Sensors on this equipment. Carefully read
and follow the instructions below. Otherwise the unit
may operate erratically.

What to do for preparation

Insert a tape into the Deck Mechanism Assembly and
press the PLAY button. The tape will be loaded into
the Deck Mechanism Assembly. Make sure the power
is on, TP507 (SENSOR INHIBITION) to GND. This will
stop the function of Tape Start Sensor, Tape End Sen­sor and Reel Sensors. (If these TPs are connected
before plugging in the unit, the function of the sensors
will stay valid.) See Fig. 1.

Note: Because the Tape End Sensors are inactive, do
not run a tape all the way to the start or the end of the
tape to avoid tape damage.

About REC-Safety Switch

Caution:

The REC-Safety Switch is directly mounted on the
Main CBA. When the Deck Mechanism Assembly is
removed from the Main CBA for servicing, this switch
does not work automatically.

What to do for preparation

In order to record, press the Rec button while pushing
REC-SAFETY SW on the Main CBA. See Fig. 1.

Q503

SW506

Q504

TP507

S-INH

(REC-SAFETY SW)

Fig. 1

1-5-1

TROUBLESHOOTING

Video problem 1 (No recording Video)

RF INPUT

Check Video signal at pin
48 of IC301.

OK

Check Video signal at pin 65 of IC301 or pin 50 of IC501.

OK

Check Video signal at pin 52 of IC501 or pin 56 of IC301.

OK

Cleaning the Video Head. (See page 2-7-2.)

NG

Check Cylinder Assembly.

LINE INPUT (AV2)

Check Video signal at pin 52 of IC301.

OK

Check Video signal at pin 65 of IC301 or pin 50 of IC501.

OK

NG

Check TU701.

NG

NG

LINE INPUT (AV1)

Check Video signal at pin
50 of IC301.

OK

NG

Check IC301, X301, etc.

Check A/V cable.

Check IC301, X301, etc.

NG

Check A/V cable.

Check Video signal at pin 52 of IC501 or pin 56 of IC301.

OK

Cleaning the Video Head.(See page 2-7-2.)

Video problem 2 (No playback Video)

Check signal at pin 94 and pin 96(or pin 93) of IC301.

OK

Check Video signal at pin 65
of IC301 or pin 50 of IC501.

OK

Check Video signal at pin 52 of IC501 or pin 56 of IC301.

OK

Check Video signal at pin 61 or 63 of IC301.

OK

Check V-OUT jack or TU701.

NG

Check IC301, X301, etc.

NG

Check Cylinder Assembly.

NG

Cleaning the Video Head. (See page 2-7-2.)

OK

Check Cylinder Assembly.

1-6-1

Audio problem 1 (No recording Normal Audio)

RF-INPUT

Change for Audio-mode(MONO) by AUDIO-SELECT
KEY of Remote Controller.

OK

NGCheck SIF signal at pin 2

of CN701.

OK

Check Audio signal at pin 4 and 5 of CN701 or pin 51
and 53 of IC451.

OK

Check Audio signal at pin 6 of IC451 or pin 15 of IC301.

OK

Check Tape interchangeability alignment. (See page 2-6-2.)

NG

Cleaning the Audio Control Head. (See page 2-7-2.)

LINE INPUT (AV2)

Check Audio signal at pin 11(or 67) or pin 73(or 65) of IC451.

OK

Check Audio signal at pin 6 of IC451 or pin 15 of IC301.

OK

Check Tape interchangeability alignment. (See page 2-6-2.)

NG

Cleaning the Audio Control Head. (See page 2-7-2.)

Check TU701,
NICAM unit.

NG

NG

NG

LINE INPUT (AV1)

Check Audio signal at pin 7 or 69 of IC451.

OK

NG

Check IC451, IC301.

Check AC Head Assembly.

Check IC451, IC301.

Check AC Head Assembly.

Audio problem 2 (No playback Normal Audio)

(AV1) (AV2)

Check Audio signal at pin 5 of IC301. Check Audio signal at pin 5 of IC301.

NG

Check Tape interchangeability alignment.

NG

Check the AC Head
Assembly.

Check Audio signal at pin 11 of IC301 or pin 4 of IC451. Check Audio signal at pin 11 of IC301 or pin 4 of IC451.

OK

Check Audio signal at pin 78 and 80 or 2 of IC451. Check Audio signal at pin 75 and 76 of IC451.

OK

Check TU701 or A-OUT jack. Check A-OUT jack.

Cleaning the Audio Control

NG

Head. (See page 2-7-2.)

1-6-2

OKOK

NG

Check Tape interchangeability alignment. (See page 2-6-2.)

NG

Check the AC Head
Assembly.

OK

OK

Cleaning the Audio Control

NG

Head. (See page 2-7-2.)

Audio problem 3 (No recording Hi-Fi Audio)

RF-INPUT

Check SIF signal at pin 2
of CN701.

OK

Check Audio signal at pin 4
and 5 of CN701 or pin 51
and 53 of IC451.

OK

Check signal at pin 26 of IC451.

OK

Cleaning the Video Head. (See page 2-7-2.)

LINE INPUT (AV2)

Check Audio signal at pin 11(or 67) and 73(or 63) of
IC451.

OK

Check signal at pin 26 of IC451.

OK

Cleaning the Video Head. (See page 2-7-2.)

NG NG

Check TU701.

NG

Check NICAM until.

NG

NG

NG

NG

NG

LINE INPUT (AV1)

Check Audio signal at pin
7 and 69 of IC451.

OK

Check signal at pin 26 of IC451.

NG

Cleaning the Video Head.

Check IC451.

Check Cylinder Assembly.

Check A/V cable.

Check IC451.

Check Cylinder Assembly.

(See page 2-7-2.)

Check A/V cable.

OK

NG

Audio problem 4 (No playback Hi-Fi Audio)

(AV1) (AV2)

Check signal at pin 24 and 27 of IC451.

OK

Cleaning the Video Head.

Check Audio signal at pin
78 and 80 of IC451.

OK

Check TU701, A-OUT jack.

NG

Check IC451.

NG

NG

Check Cylinder Assembly.

Check Audio signal at pin
75 and 76 of IC451.

OK

NG

OK

Check IC451.

1-6-3

Power problem

It is highly recommended that a variable isolation
transformer which can monitor current be used.
(Alternatively a variable AC source which moni­tors current will do). Read directions below before
power is added!

2] Check for any defective parts while the secondary
rectifying diodes are disconnected (D011, D013 and
D014) perform a diode check in both forward and
reverse directions through a tester.

3] Remove the following components and check for
defects: snubber diode (D005), switching FET (Q001),
source resistor (R006), control transistor (Q002).

Repair method

CHECK

Connect unit to the isolation trans­former and slowly increase the AC sup­ply while monitoring the current, if it
draws too much current (Be ware fuse
is rated for 1.6 amps), then turn off
supply and do repair method #1.

NO

Check whether the primary rectifying
DC of the Switching power supply has
an output. (Reading should be about
168V.)

YES

With the primary DC working check
the secondary 5V.

YES

Are the 44V, 12V and 5V
higher than normal?

NO

Although the secondary 5V is working,
are any of the other voltages higher
than normal (44V and 12V)?

NO

There is no problem on the SW power
supply.

YES

NO

NO

YES

YES

#1

#2

#3

#4

#5

Repair method #1

(Power must be off)
Short circuit in the secondary side. check diode D014,
D011, D012, D013, switching FET (Q001), control
transistor (Q002), diode (D006), and resistor (R014)
replace as necessary.
Disconnect 44V diode (D011), 12V diode (D013), 5V
diode (D014). Check the load continuity of 44V line,
12V line and 5V line through a tester (resistance
range).
If the tester indicates a lower resistance value around
0 ohm, the line is short-circuited.
Before repairing the switching power supply, find out
the short-circuited area of such line and repair it.
If the tester does not indicate any low resistance value
(around 0 ohm), no load is short-circuited and there is
no problem.

Repair method #2

Check the fuse 1.6A (F001), primary rectifying diodes
(D001-D004) as possible problems. Remove the
above mentioned parts and check them. The circuit
which turns on switching FET (Q001) may be
regarded as a possible cause, even if the load at the
secondary side is shorted, it can't be detected
because switching FET (Q001) isn't operating. Per­form check according to the step 1 and 2 of repair
method #1 and check the following parts:
(Remove the part from PCB)
Switching FET (Q001), source resistor (R006), gate
resistor (R008) and start resistor (R004 and R005).

Repair method #3

A circuit to turn on switching FET (Q001) may not work
and this may be regarded as a cause of trouble. Even
if the load at the secondary side is short-circuited, it
cannot be detected because switching FET (Q001)
does not turn on. Therefore, perform check according
to the steps 1] and 2] of the repair method #1 and exe­cute the under-mentioned parts breakage check.
(Remove the part from PCB.)
switching FET (Q001), source resistor (R014), control
transistor (Q002), gate resistor (R005) and start resis­tor (R003, R004 and R028).

Repair method #4

The feedback circuit which is monitored by the output
of voltage may not work and this may be regarded as
a possible cause, remove control transistor Q002 and
check for defects. More over, a photo coupler (IC001)
and transistor (Q004) may be defective, replace any
defective parts with factory originals.

Repair method #5

If the output voltage of the secondary side is slightly
high, the line load may be in the "OPEN" state and this
may be regarded as a cause of trouble. If there is no
output voltage on the secondary side, the rectifying
diodes (D014), (D013) may be defective.

1-6-4

OPERATING CONTROLS AND FUNCTIONS

VT-MX210EUK

Front Panel

1. Cassette compar tment

2. E (REW) button

3. B (PLAY) button

4. D (F.FWD) button

5.

C/A (STOP/EJECT) button

6. k (PAUSE) button

7. REC button

8. CHANNEL (o/p) [TRACKING]

buttons

9. Indicator (See below)

10.y (STANDBY) button

11. PWR. (Power) indicator

12. TAPE IN indicator

13. REC indicator

14. (Timer) indicator

15. CLOCK indicator

Indicator

11

12

12435

PWR. REC

15

678910

13

14

Rear Panel

16

Remote Control

STANDBY

1

1

2

4

7

VIDEO Plus+

3

DISPLAY

4

MENU

5

EW

6
7

R

REC

8

2

5

8

0

PLAY

STOP

3

6

9

DAILY/WEEKLY

RESET

SPEED

EJECT

CHANNEL

SLOW

COUNTER

MEMORY

D

W

F. F

PAUSE/STILL

18

17
16

15

14
13

12
11

10
9

1817

AV2(DECODER) AV1(TV)

AERIAL

RF OUT

1920

1. STANDBY button

2. NUMBER buttons

3. VIDEO Plus+ button

4. MENU button

5. DISPLAY button

6. REW button

7. STOP button

8. REC button

9. PAUSE/STILL button

10. SPEED button

11. F.FWD button

12. PLAY button

13. COUNTER RESET button

14. COUNTER MEMORY button

15. SLOW button

16. DAILY/WEEKLY button

17. CHANNEL (o/p) buttons

18. EJECT button

16. Power cord

17. AV2 (DECODER) socket

18. AV1 (TV) socket

19. RF OUT socket

20. AERIAL socket

To insert the batteries:

Install two AA batteries
matching the polarity indi­cated inside the battery
compartment.

1-7-1

Front Panel

Indicator

11

12

Rear Panel

16

VT-FX240EUK

12435

PWR. REC

15

AV2(DECODER) AV1(TV)

1817

AUDIO

OUTPUT

678910

13

14

1. Cassette compar tment

2. E (REW) button

3. B (PLAY) button

4. D (F.FWD) button

5.

C/A (STOP/EJECT) button

6. k (PAUSE) button

7. REC button

8. CHANNEL (o/p) [TRACKING]

buttons

9. Indicator (See below)

10.y (STANDBY) button

11. PWR. (Power) indicator

12. TAPE IN indicator

13. REC indicator

14. (Timer) indicator

15. CLOCK indicator

16. Power cord

17. AV2 (DECODER) socket

18. AV1 (TV) socket

19. RF OUT socket

20. AERIAL socket

L

AERIAL

RF OUT

R

21. AUDIO OUTPUT L/R jacks

1-7-2

Remote Control

STANDBY

1

1

2

4

7

VIDEO Plus+

3

4

MENU

5

6
7

8

R

REC

QUICK-FIND

9

10

EW

AUDIO

SELECT

2

5

8

0

DISPLAY

STOP

TIME

SEARCH

PLAY

3

6

9

DAILY/WEEKLY

RESET

SPEED

INDEX

EJECT

CHANNEL

SLOW

COUNTER

MEMORY

D

W

F. F

PAUSE/STILL

22

21

20
19

18

17
16

15
14

13
12

11

192021

1. STANDBY button

2. NUMBER buttons

3. VIDEO Plus+ button

4. MENU button

5. DISPLAY button

6. REW button

7. STOP button

8. REC button

9. QUICK-FIND button

10. TIME SEARCH button

11. INDEX SEARCH button

12. PAUSE/STILL button

13. SPEED button

14. F.FWD button

15. PLAY button

16. COUNTER RESET button

17. COUNTER MEMORY button

18. SLOW button

19. DAILY/WEEKLY button

20. CHANNEL (o/p) buttons

21. EJECT button

22. AUDIO SELECT button

To insert the batteries:

Install two AA batteries
matching the polarity indi­cated inside the battery
compartment.

CAUTION

On Battery Replacement

• Do not mix old and new
batteries. (Also never mix alka-

line batteries with manganese
batteries.)

CHAPTER 2 DISASSEMBLY AND ADJUSTMENT

CABINET DISASSEMBLY INSTRUCTIONS

1. Disassembly Flowchart

This flowchart indicates the disassembly steps to gain
access to item(s) to be serviced. When reassembling,
follow the steps in reverse order. Bend, route, and
dress the cables as they were originally.

[1] Top Case

[2] Front Assembly

[3] VCR Chassis Unit

[4] Jack CBA

[5] Function CBA

[6] Deck Assembly

[7] Main CBA

2. Disassembly Method

REMOVAL

ID/

LOC.

No.

PART

REMOVE/*UNHOOK/

Fig.

UNLOCK/RELEASE/

No.

UNPLUG/DESOLDER

Note

(1): Identification (location) No. of parts in the figures
(2): Name of the part
(3): Figure Number for reference
(4): Identification of parts to be removed, unhooked,

unlocked, released, unplugged, unclamped, or
desoldered.
P=Spring, L=Locking Tab, S=Screw,
CN=Connector
*=Unhook, Unlock, Release, Unplug, or Desolder
e.g. 2(S-2) = two Screws (S-2),
2(L-2) = two Locking Tabs (L-2)

(5): Refer to “Reference Notes.”

Reference Notes

CAUTION: Locking Tabs (L-1) and (L-2) are fragile.
Be careful not to break them.

1. Release Locking Tab (L-3) and remove Screw
(S-2), five Screws (S-3), three Screws (S-4) and
Screw (S-5). Then, slowly lift the VCR Chassis Unit
(Deck Assembly, Function CBA, Jack CBA and
Main CBA) up.

2. When reassembling, solder wire jumpers as shown
in Fig. 5.

3. Before installing the Deck Assembly, be sure to
place the pin of LD-SW on Main CBA as shown in
Fig. 6. Then, install the Deck Assembly while align­ing the hole of Cam Gear with the pin of LD-SW,
the shaft of Cam Gear with the hole of LD-SW as
shown in Fig. 6.

[1] Top Case 1 7(S-1) -

Front

[2]

Assembly

VCR

[3]

Chassis
Unit

[4] Jack CBA 4 Desolder, (S-6) -

Function

[5]

CBA

Deck

[6]

Assembly

[7] Main CBA 5 ---------- -

↓

(1)

↓

(2)

2 *3(L-1),*4(L-2) -

*(L-3), (S-2), 5(S-3),

3

3(S-4), (S-5)

5 Desolder -

5,6 2(S-7), Desolder 2,3

↓

(3)

↓

(4)

1

↓

(5)

2-1-1

(S-1)

[1] Top Case

(S-1)

(S-1)

Fig. 1

(S-3)

[3]VCR
Chassis Unit

(S-2)

(S-4)

(S-3)

(S-5)

(S-4)

(S-3)

(L-2)

[2] Front
Assembly

(L-1)

(L-3)

(L-2)

Fig. 3

[4] Jack CBA

(S-6)

Desolder

Fig. 2

Fig. 4

2-1-2

FE Head

Cylinder Assembly

AC Head
Assembly

Pin

SW507
LD-SW

[6] Deck Assembly

(S-7)

[5] Function
CBA

From
FE Head

Lead with
red stripe

From
Cylinder
Assembly

Lead with
white stripe

From
AC Head
Assembly

[7] Main CBA

Desolder

From
Capstan Motor
Assembly

Lead with
white stripe

(S-7)

[7] Main CBA

[6] Deck Assembly

Shaft

Hole

LD-SW

Cam Gear

Hole

Pin

[7] Main CBA

Fig. 6

TOP VIEW

Lead connections of Deck Assembly and Main CBA

Fig. 5

2-1-3

DISASSEMBLY/ASSEMBLY PROCEDURES

OF DECK MECHANISM

Before following the procedures described below, be sure to remove the deck assembly from the cabinet. (Refer to
CABINET DISASSEMBLY INSTRUCTIONS on page 2-1-1.)
All the following procedures, including those for adjustment and replacement of parts, should be done in Eject
mode; see the positions of [41] and [42] in Fig.DM1 on page 2-2-3. When reassembling, follow the steps in reverse

order.

STEP
/LOC.

START-

ING

No.

[1] [1]
[2] [1]
[3] [2] Slider L T DM5 (S-2)
[4] [2] Slider R T DM5 (S-3)
[5] [4]
[6] [2]
[7] [7] Cylinder Assembly T DM1,DM6 Desolder, 3(S-5)

[8] [8] Loading Motor Assembly T DM1,DM7

[9] [9]
[10] [2]
[11] [10]
[12] [11] Pinch Arm (B) T DM1,DM8 *(P-3)
[13] [12]
[14] [14]
[15] [15]
[16] [2] Slider Shaft T DM10 (S-11),*(L-3)
[17] [16]
[18] [16]
[19] [7],[10]
[20] [20] Clutch Assembly(HI) B DM2,DM12 (C-1)
[21] [20]
[22] [22]
[23] [22]
[24] [24] Mode Gear B DM2,DM14 (C-4)

[25]

[26] [22] Worm Holder B DM2,DM14 (S-15)
[27] [26] Pulley Assembly B DM2,DM14

[28] [22],[25]

[29] [20]
[30] [29] TR Gear Spring B DM14
[31] [30] TR Gear A/B B DM1,DM14
[32] [31]
[33] [21],[25]
[34] [25] BT Arm B DM2,DM15 *(P-5)

No.

[20],[23],

[24]

Guide Holder A T DM3 2(S-1)
Cassette Holder Assembly T DM4

Lock Lever T DM5 (S-4),*(P-1)
C Plate T DM5

AC Head Assembly T DM1,DM7 (S-7)
Tape Guide Assembly T DM1,DM8 *(P-2)
Door Opener B T DM1,DM8 *(L-1),*(L-2)

Pinch Arm (A) Assembly T DM1,DM8
FE Head T DM1,DM9 (S-9)
Prism T DM1,DM9 (S-10)

C Drive Lever L T DM10
C Drive Lever R T DM10
Capstan Motor B DM2,DM11 3(S-12), Cap Belt

Center Gear B DM12
Cam Holder F B DM2,DM13 (C-2)
Cam Gear (B) B DM2,DM13 (C-3),*(P-4)

Mode Lever(HI) B DM2,DM14 (C-5), *(L-4)

Cam Gear (A) B DM2,DM14

TR Gear C B DM2,DM14 (C-6)

FF Arm(HI) B DM1,DM14
Idler Assembly(HI) B DM1,DM15 *(L-5)

PART

Fig. No.

REMOVAL INSTALLATION

REMOVE/*UNHOOK/
UNLOCK/RELEASE/
UNPLUG/DESOLDER

Desolder, LDG Belt,
2(S-6)

ADJUSTMENT

CONDITION

(+)Refer to Alignment
Sec.Pg.2-3-2

2-2-1

STEP
/LOC.

START-

ING

No.

[35] [25]

[36] [35]

[37] [2],[25]
[38] [2],[25] M Brake S(HI) Assembly T DM1,DM16 *(P-7)

[39] [38]

[40] [39]
[41] [2]
[42] [2],[15] Sensor Gear T DM1,DM16 (C-8)
[43] [37],[41] Reel T T DM1,DM16
[44] [39]

[45] [35],[38]

[46] [36]

[47] [19] TG Post Assembly T DM1,DM17 *(L-7)

[48] [18],[28]

[49] [48]

[50] [50] Cleaner Lever Assembly T DM1,DM6

[51] [50] CL Post T DM6 *(L-9) Type A

↓

(1)

No.

Loading Arm S(B)
Assembly

Loading Arm T(B)
Assembly

M Brake T(HI) Assembly T DM1,DM16 *(P-6)

Tension Lever Sub
Assembly

T Lever Holder T DM1,DM16 *(L-6)
M Gear(HYT) T DM1,DM16 (C-7)

Reel S T DM1,DM16
Moving Guide S

Preparation
Moving Guide T

Preparation

Rack Assembly R DM18

F Door Opener R DM18

↓

(2)

PART

↓

(3)

Fig. No.

B DM2,DM15

B DM2,DM15

T DM1,DM16

T DM1,DM17

T DM1,DM17

↓

(4)

↓

(5)

REMOVAL INSTALLATION

REMOVE/*UNHOOK/
UNLOCK/RELEASE/
UNPLUG/DESOLDER

(+)Refer to Alignment
Sec.Pg.2-3-1

(+)Refer to Alignment
Sec.Pg.2-3-1

(+)Refer to Alignment
Sec.Pg.2-3-2

Type A

*(L-8) Type B

↓

(6)

ADJUSTMENT

CONDITION

↓

(7)

(1): Follow steps in sequence. When reassembling, follow the steps in reverse order.

These numbers are also used as ldentification (location) No. of parts in the figures.

(2): Indicates the part to start disassembling with in order to disassemble the part in column (1).

(3): Name of the part

(4): Location of the part: T=Top B=Bottom R=Right L=Left

(5): Figure Number

(6): Identification of parts to be removed, unhooked, unlocked, released, unplugged, unclamped, or desoldered.

P=Spring, W=Washer, C=Cut Washer, S=Screw, *=Unhook, Unlock, Release, Unplug, or Desolder

e.g., 2(L-2) = two Locking Tabs (L-2).

(7): Adjustment Information for Installation

(+):Refer to Deck Exploded Views for lubrication.

.

* In case of some models, the Cleaner Lever Assembly and CL Post is not used.

2-2-2

Top View

[14]

[39]

[7] [50] [8]

[46][45] [47][9]

[13]

[11]

[15]

[40]

[38]

Bottom View

[10]
[12]

[37]

[33][44] [42] [31] [32] [41] [43]

Fig. DM1

[19]

[36]

[35]

2-2-3

[26]

[27]

[23]

[28]

[24]

[25]

[34][20][29][22]

Fig. DM2

(S-1)

[1]

(S-1)

Fig. DM3

[3]

[4]

[5]

(S-2)

[6]

(P-1)

(S-3)

(S-4)

Fig. DM5

Note: Either of two types (A and B) of CLEANER

ASSEMBLY is applied for the Deck Assembly. Though
these structures are different, they are compatible.

Pin D

Pin C

Slots B

First, while pushing the locking tab as
shown in the right, slide and pull up the right
side on [2] to release Pin A and Pin B from
the slots A.
Then, remove Pin C and Pin D on [2] from
the slots B as shown.

[2]

Pin A

2

Pull up

A

1

Slide

Pin B

Slot A

Slot A

[7]

Type A

(S-5)

[50]

[51]

(L-9)

Type B

[50]

(L-8)

A

Locking tab

View for A

Fig. DM4

Desolder
from bottom

View for A

Lead with
Blue Stripe

Fig. DM6

2-2-4

[9]

A

(S-7)

(S-6)

(L-2)

LDG
Belt

Adj. Screw

[8]

Desolder
from bottom

Lead with White Stripe

View for A

[8]

Fig. DM7

[11]
(L-1)

[14]

[17]

(L-3)

(S-9)

(S-10)

[15]

Fig. DM9

After removing the Screw (S-11),
while pressing the Locking Tab
(L-3), remove [16].

Pin of [12]

Pin of [10]

[13]

[10]

A

Grooves of [28]

(P-3)

[12]

[16]

[18]

(P-2)

(S-11)

Fig. DM10

2-2-5

View for A

When reassembling [10] and
[12], confirm that pin of [10]
and pin of [12] are in the

[28]

grooves of [28] as shown.

Fig. DM8

Cap Belt

(C-1)

[20]

[19]

[21]

Fig. DM12

(S-12)

Fig. DM11

2-2-6

[23]

(P-4)

(C-3)

(C-2)

(P-4)

[28]

[22]

[27]

[28]

[26]

(S-15)

[25]

(L-4)

(C-6)

[29]

[30]

[31]

(C-5)

(C-4)

[24]

Pin on
bottom
of [23]

Top View

When installing [23], install
the spring (P-4) to [28] as
shown in the left figure, and
then install [23] while
pressing the spring (P-4) to
the direction of the arrow in
the left figure and confirming
that the position of the
spring (P-4) is placed as
shown in the left figure.

[23]

Position of pin on [22]

Pin on [22]

[28]

Fig. DM13

[32]

Pin of [37]

Bottom View

Top View

Position of Mode Lever when installed

Pin of [34]

[28]

Align [25] and [28] as shown.

First groove on [28]

First tooth on [48]

[28]

When reassembling [28],
meet the first groove on
[28] to the first tooth on
[48] as shown.

Pin of [38]

[25]

Fig. DM14

2-2-7

Refer to the Alignment Section, Page 2-3-1.

(P-5)

[45]

[46]

[47]

[34]

[38]

(P-7)

turn

[40]

[33]

(L-6)

turn

[44]

[42]

(L-5)

[39]

(C-8)

[36]

(C-7)

[41]

[35]

Fig. DM15

[43]

(P-6)

[37]

[49]

[48]

(L-7)

Fig. DM17

Slide

Fig. DM18

turn

Fig. DM16

2-2-8

ALIGNMENT PROCEDURES OF MECHANISM

The following procedures describe how to align the
individual gears and levers that make up the tape
loading/unloading mechanism. Since information
about the state of the mechanism is provided to the
System Control Circuit only through the Mode Switch,
it is essential that the correct relationship between
individual gears and levers be maintained.

All alignments are to be performed with the mech­anism in Eject mode, in the sequence given. Each

procedure assumes that all previous procedures have
been completed.

IMPORTANT:

If any one of these alignments is not performed
properly, even if off by only one tooth, the unit will
unload or stop and it may result in damage to the
mechanical or electrical parts.

Alignment points in Eject Position

Top View

Alignment [a]

Alignment 3

Alignment 1

Loading Arm, S and T Assembly

Install Loading Arm S and T Assembly so that their
triangle marks point to each other as shown in Fig.
AL2.

Alignment 2

Mode Gear

Keeping the two triangles pointing at each other,

install the Loading Arm T Assembly so that the last
tooth of the gear meets the most inside teeth of the
Mode Gear. See Fig. AL2.

Alignment 1

Triangle Marks

Loading Arm
T Assembly

Loading Arm
S Assembly

Last Tooth

Alignment 2

Most inside teeth
of Mode Gear

Mode Gear

Bottom View

Alignment [a] can be done independently of any
other alignment.

Alignment 1

Alignment 2

Fig. AL1

Fig. AL2

Alignment [a]

Tape Guide Assembly

Measurement of the screw must be as specified in

Fig. AL3.

Tape Guide
Assembly

Screw

3.25 ± 0.1 mm

0.128 ± 0.004 inch

This alignment can be
done independently of
any other alignment.

Fig. AL3

2-3-1

Alignment 3

Cam Gear (A), Rack Assembly

Install the Rack Assembly so that the first tooth on
the gear of the Rack Assembly meets the first
groove on the Cam Gear (A) as shown in Fig. AL4.

Top View

First groove
on the Cam Gear (A)

Cam Gear (A)

Alignment 3

First tooth

Gear on Rack Assembly

Fig. AL4

2-3-2

ELECTRICAL ADJUSTMENT INSTRUCTIONS

General Note: "CBA" is an abbreviation for
"Circuit Board Assembly."

NOTE:

1.Electrical adjustments are required after replacing
circuit components and certain mechanical parts.
It is important to do these adjustments only after
all repairs and replacements have been com­pleted. Also, do not attempt these adjustments
unless the proper equipment is available.

2.To perform these alignment / confirmation proce­dures, make sure that the tracking control is set in
the center position: Press either "L5??" or "K" button
on the remote control unit first, then the "PLAY"
button (Front Panel only).

Test Equipment Required

1.Oscilloscope: Dual-trace with 10:1 probe,
V-Range: 0.001~50V/Div.,
F-Range: DC~AC-20MHz

2.Alignment Tape (MH-2)

Head Switching Position Adjustment

Purpose:

To determine the Head Switching point during
playback.

Symptom of Misadjustment:

May cause Head Switching noise or vertical jitter
in the picture.

Test point Adj.Point Mode Input

TP751(V-OUT)

TP502(RF-SW)

GND

Tape

MH-2 Oscilloscope

Connections of Measurement Equipment

TP751

Main CBA

TP502

VR501

(Switching Point)

(MAIN CBA)

Measurement

Equipment

GND

PLAY

(SP)

6.5H±1H

(412.7µs±60µs)

Oscilloscope

-----

Spec.

CH1 CH2
Trig. (+)

Figure 1

EXT. Syncronize Trigger Point

V-Sync

CH1

CH2

Reference Notes:
Play back the Alignment tape and adjust VR501 so
that the V-sync front edge of the CH1 video output
waveform is at the 6.5H(412.7µs) delayed position
from the rising edge of the CH2 head switching pulse
waveform.

1.0H

6.5H

Switching Pulse

0.5H

2-4-1

FIXTURE AND TAPE FOR ADJUSTMENT

1. Alignment Tape

No. 7099052 (MH-2)

2. Special Driver

No. 7099028

How To Use The Fixtures And Tape

Item No. Name Part No. Adjustment

1 Alignment Tape 7099052

2 Special Driver 7099028 I Guide Roller

I Head Switching Point
I Tape Interchangeability Alignment

2-5-1

MECHANICAL ALIGNMENT PROCEDURES

Explanation of alignment for the tape to correctly run
starts on the next page. Refer to the information below
on this page if a tape gets stuck, for example, in the
mechanism due to some electrical trouble of the unit.

Service Information

A. Method for Manual Tape Loading/Unloading

To load a cassette tape manually:

1. Disconnect the AC plug.

2. Remove the Top Case and Front Assembly.

3. Insert a cassette tape. Though the tape will not be
automatically loaded, make sure that the cassette
tape is all the way in at the inlet of the Cassette
Holder. To confirm this, lightly push the cassette
tape further in and see if the tape comes back out,
by a spring motion, just as much as you have
pushed in.

4. Turn the LDG Belt in the appropriate direction
shown in Fig. M1 for a minute or two to complete
this task.

To unload a cassette tape manually:

1. Disconnect the AC plug.

2. Remove the Top Case and Front Assembly.

3. Make sure that the Moving guide preparations are
in the Eject Position.

4. Turn the LDG Belt in the appropriate direction
shown in Fig. M1 until the Moving guide prepara­tions come to the Eject Position. Stop turning
when the preparations begin clicking or can not be
moved further. However, the tape will be left
wound around the cylinder.

5. Turn the LDG Belt in the appropriate direction con­tinuously, and the cassette tape will be ejected.
Allow a minute or two to complete this task.

B. Method to place the Cassette Holder in the tape-

loaded position without a cassette tape

1. Disconnect the AC Plug.

2. Remove the Top Case and Front Assembly.

3. Turn the LDG Belt in the appropriate direction
shown in Fig. M1. Release the locking tabs shown
in Fig. M1 and continue turning the LDG Belt until
the Cassette Holder comes to the tape-loaded
position. Allow a minute or two to complete this
task.

Top View

Moving guide T preparation
(Eject Position)

Moving guide S preparation
(Eject Position)

Push the tape
to load it.

Push the locking tab gently to unlock
when loading without a cassette.

UNLOAD
/EJECT

LOAD

Side View

LDG Belt

Fig. M1

Bottom View

2-6-1

LDG Belt (B)

UNLOAD
/EJECT

Cam Gear

Fig. M2

1.Tape Interchangeability Algnment

Note:
To do these alignment procedures, make sure that the
Tracking Control Circuit is set to the center position
every time a tape is loaded or unloaded. (Refer to
page 2-6-4, procedure 1-C, step 2.)

Equipment required:

Dual Trace Oscilloscope
VHS Alignment Tape (MH-2)
Guide Roller Adj. Screwdriver
X-Value Adj. Screwdriver

Note: Before starting this Mechanical Alignment, do all
Electrical Adjustment procedures.

Flowchart of Alignment for tape traveling

Loading (Use a blank tape.)

Adjust the height of the Guide Rollers
(Supply side and take-up side).
(Use a blank tape.) (pg. 2-6-3)

1-A

Check to see that the tape is not creasing
and that there is no slack on the supply
and take-up side Guide Rollers.
(Use a blank tape.)

Adjust the X Value for maximum envelope.
(pg. 2-6-3) (Use Alignment Tape.)

Adjust the envelope. (pg. 2-6-4)

Check the envelope.

OK

Adjust the Audio Section.
(Azimuth Alignment) (pg. 2-6-4)

Check the audio output.

OK

1-A

1-B

1-C

1-C

1-D

1-D

Not good

Not good

Not good

Do the final tape-traveling test to see that
the tape runs normally in play mode with­out creasing or slacking.

OK

Completion

1-A

Check the following:

1. X Value (pg. 2-6-3)

2. Envelope (pg. 2-6-4)

OK

1-B, 1-C

Not good

Adjust the X value and envelope.

1-B, 1-C

2-6-2

1-A. Preliminary/Final Checking and

Alignment of Tape Path

Purpose:

To make sure that the tape path is well stabilized.

Symptom of Misalignment:

If the tape path is unstable, the tape will be damaged.

Note: Do not use an Alignment Tape for this proce­dure. If the unit is not correctly aligned, the tape may
be damaged.

1. Play back a blank cassette tape and check to see
that the tape runs without creasing at Guide Rollers
[2] and [3], and at points A and B on the lead sur­face. (Refer to Fig M3 and M4.)

2. If creasing is apparent, align the height of the guide
rollers by turning the top of Guide Rollers [2] and
[3] with a Guide Roller Adj. Screwdriver. (Refer to
Fig. M3 and M5.)

Guide Roller [2]

A

Take-up Guide Post [4]

Lead Surface of Cylinder

Correct

Guide Roller

Tape

Take-up Guide
Post

Tape

Guide Roller [3]

AC Head

B

Fig. M3

Tape

Fig. M4

Incorrect

3. Check to see that the tape runs without creasing at
Take-up Guide Post [4] or without snaking between
Guide Roller [3] and AC Head. (Fig. M3 and M5)

4. If creasing or snaking is apparent, adjust the Tilt
Adj. Screw of the AC Head. (Fig. M6)

Azimuth Adj. Screw

AC Head

X-Value Adj.
Screwdriver

Tilt Adj. Screw

Fig. M6

1-B. X Value Alignment

Purpose:

To align the Horizontal Position of the Audio/Control/
Erase Head.

Symptom of Misalignment:

If the Horizontal Position of the Audio/Control/Erase
Head is not properly aligned, maximum envelope can­not be obtained at the Neutral position of the Tracking
Control Circuit.

1. Connect the oscilloscope to TP301 (C-PB) and
TP501 (CTL) on the Main CBA. Use TP502 (RF­SW) as a trigger.Connect the oscilloscope to
TP301 (C-PB) and TP501 (CTL) on the Main CBA.
Use TP502 (RF-SW) as a trigger.

2. Play back the Gray Scale of the Alignment Tape
(MH-2) and confirm that the PB FM signal is
present.

3. Set the Tracking Control Circuit to the center posi­tion by pressing CH UP button then “ PLAY ” button
on the unit. (Refer to note on bottom of page
2-6-4.)

4. Use the X-Value Adj. Screwdriver so that the PB
FM signal at TP301 (C-PB) is maximum. (Fig. M6)

5. Press CH UP button on the unit until the CTL wave­form has shifted by approx. +2msec. Make sure
that the envelope is simply attenuated (shrinks in
height) during this process so that you will know
the envelope has been at its peak.

2-6-3

Fig. M5

6. Press CH DOWN button on the unit until the CTL
waveform has shifted from its original position (not
the position achieved in step 5, but the position of
CTL waveform in step 4) by approximately -2msec.
Make sure that the envelope is simply attenuated
(shrinks in height) once CTL waveform passes its
original position and is further brought in the minus
direction.

7. Set the Tracking Control Circuit to the center posi­tion by pressing CH UP button and then “ PLAY ”
button.

1-C. Checking/Adjustment of Envelope

Waveform

Purpose:

To achieve a satisfactory picture and precise tracking.

Symptom of Misalignment:

If the envelope output is poor, noise will appear in the
picture. The tracking will then lose precision and the
playback picture will be distorted by any slight varia­tion of the Tracking Control Circuit.

1. Connect the oscilloscope to TP301 (C-PB) on the
Main CBA. Use TP502 (RF-SW) as a trigger.

2. Play back the Gray Scale on the Alignment Tape
(MH-2). Set the Tracking Control Circuit to the
center position by pressing CH UP button and then
“ PLAY ” button on the unit. Adjust the height of
Guide Rollers [2] and [3] (Fig. M3, Page 2-6-3)
watching the oscilloscope display so that the enve­lope becomes as flat as possible. To do this adjust­ment, turn the top of the Guide Roller with the
Guide Roller Adj. Screwdriver.

3. If the envelope is as shown in Fig. M7, adjust the
height of Guide Roller [2] (Refer to Fig. M3) so that
the waveform looks like the one shown in Fig. M9.

4. If the envelope is as shown in Fig. M8, adjust the
height of Guide Roller [3] (Refer to Fig. M3) so that
the waveform looks like the one shown in Fig. M9.

5. When Guide Rollers [2] and [3] (Refer to Fig.M3)
are aligned properly, there is no envelope drop
either at the beginning or end of track as shown in
Fig. M9.

Note: Upon completion of the adjustment of Guide
Rollers [2] and [3] (Refer to Fig. M3), check the X
Value by pushing the CH UP or DOWN buttons alter­nately, to check the symmetry of the envelope. Check
the number of pushes to ensure center position. The
number of pushes CH UP button to achieve 1/2 level
of envelope should match the number of pushes CH
DOWN button from center. If required, redo the “X
Value Alignment.”

1-D. Azimuth Alignment of Audio/Control/

Erase Head

Purpose:

To correct the Azimuth alignment so that the Audio/
Control/Erase Head meets tape tracks properly.

Symptom of Misalignment:

If the position of the Audio/Control/Erase Head is not
properly aligned, the Audio S/N Ratio or Frequency
Response will be poor.

1. Connect the oscilloscope to the audio output jack
on the rear side of the deck.

2. Play back the alignment tape (MH-2) and confirm
that the audio signal output level is 8kHz.

3. Adjust Azimuth Adj. Screw so that the output level
on the AC Voltmeter or the waveform on the oscil­loscope is at maximum. (Fig. M6)

Dropping envelope level at the beginning of track.

Fig. M7

Dropping envelope level at the end of track.

Fig. M8

Envelope is adjusted properly. (No envelope drop)

Fig. M9

2-6-4

STANDARD MAINTENANCE

Service Schedule of Components

h: Hours : Check I : Change

Deck Periodic Service Schedule

Ref.No. Part Name 1,000 h 2,000 h 3,000 h 4,000 h

B2 Cylinder Assembly

B3

B8 Pulley Assembly

B27

B31

B573,B574 Reel S, Reel T

B37

B52

*B73 FE Head

B133

B410

B414 M Brake S Assembly II

B416

Loading Motor Assembly

Tension Lever Sub Assembly

AC Head Assembly

Capstan Motor

Cap Belt

Idler Assembly

Pinch Arm (A) Assembly

M Brake T Assembly

II

I

II

II

I

I

II

II

I

II

II

II

B525

Notes:

1.Clean all parts for the tape transport (Upper Drum with Video Head / Pinch Roller / Audio Control Head / Full
Erase Head) using 90% lsopropyl Alcohol.

2.After cleaning the parts, do all DECK ADJUSTMENTS.

3.For the reference numbers listed above, refer to Deck Exploded Views.
* B73 ------ Recording Model only

2-7-1

LDG Belt

II

Cleaning

Cleaning of Video Head

Clean the head with a head cleaning stick or chamois
cloth.

Procedure

1.Remove the top cabinet.

2.Put on a glove (thin type) to avoid touching the
upper and lower drum with your bare hand.

3.Put a few drops of 90% Isopropyl alcohol on the
head cleaning stick or on the chamois cloth and,
by slightly pressing it against the head tip, turn the
upper drum to the right and to the left.

Notes:

1.The video head surface is made of very hard
material, but since it is very thin, avoid cleaning it
vertically.

2.Wait for the cleaned part to dry thoroughly before
operating the unit.

3.Do not reuse a stained head cleaning stick or a
stained chamois cloth.

Cleaning of Audio Control Head

Clean the head with a cotton swab.

Procedure

1.Remove the top cabinet.

2.Dip the cotton swab in 90% isopropyl alcohol and
clean the audio control head. Be careful not to
damage the upper drum and other tape running
parts.

Notes:

1.Avoid cleaning the audio control head vertically.

2.Wait for the cleaned part to dry thoroughly before
operating the unit or damage may occur.

A/C Head

Upper
Cylinder

Do Not !

Video Head

Cleaning Stick

2-7-2

CHAPTER 3 EXPLODED VIEWS AND PARTS LIST

EXPLODED VIEWS

Front Panel

A1X

3-1-1

Cabinet

JACK CBA

2L022

2L022

2L011

A5

2L022

2L022

VT-FX240EUK
only

2B9

2L012

A4

2L011

2B18

2L011

A2

2L041

VT-MX210EUK
only

A4

2L021

2L011

2L021

2L011

2L042

2L021

2L021

2B5

2L051

VT-FX240EUK
only

POWER
SW CBA

2L043

SENSOR CBA

AFV CBA

2L041

2B46

2B7

2B8

2L031

2L021

2L041

2B14

MAIN CBA

2L099

AC001

SENSOR CBA

3-1-2

FUNCTION CBA

A7

Deck Mechanism View 1

B2

B35

Mark Description

Floil G-374G
SLIDUS OIL #150

(Blue grease)

B9

B73

L1191

B10

L1053

B74

L1051

L1467

B411

B567

B494

B553

B410

Chassis Assembly
Top View (Lubricating Point)

B501

B12

B11

B571

Some Ref. Numbers are not in sequence.

B492

B37

L1450

B426

B121

B560

L1466

B126

L1468

B8

Chassis Assembly
Bottom View (Lubricating Point)

3-1-3

Deck Mechanism View 2

B414

B417

B508

B572

B565

B27

B587

B499

B573

B585

Note: Both the TENSION
LEVER SUB ASSEMBLY
MK11(B27) and the TENSION
LEVER ASSEMBLY MK11
(B587) can be used.

B487

B521

B574

B520

B416

B518

B564

Mark Description

Floil G-374G
SANKOUL FG84M
SLIDUS OIL #150

B148

L1406

B522

B31

B525

(Blue grease)

(Yellow grease)

B3

B558

B557

B579

View
for A

B568

B559

B578

B579

B582

B580

B583

B133

B581

B551

A

B516

B584

B507

B569

B505

B488

B491

B570

B502

B513

Bottom Side (Grease point)

L1151

Bottom Side
(Grease point)

3-1-4

B52

Some Ref. Numbers are not in sequence.

Deck Mechanism View 3

Mark Description

Floil G-374G

(Blue grease)

SLIDUS OIL #150

L1321

B355

L1341

B347

B482

L1321

B354

Note: There are two types (A and B) of B529 (CLEANER
ASSEMBLY), which includes B359 (CLEANER LEVER), B360
(CLEANER ROLLER), B361 (CL POST), etc. These types of
B529 (CLEANER ASSEMBLY) are compatible, and there is no
problem when using either, but it is recommended that you
replace the assembly with the same type if possible.
Refer to Table 1 for details and the combination, (also, refer to
the mechanical parts list on page 3-2-1).

B529 B359 B360 B361

Type

CLEANER

ASSEMBLY

A TJ15103

TJ15746

B

B483

CLEANER

LEVER

TJ15729 Not Used

CLEANER

ROLLER

TJ15104

CL

POST

TJ15105

B529

Type B

B360

B425

L1461

B359

B562

B563

L1341

B300

B313

B529

Type A

B360

B359

B361

B555

Some Ref. Numbers are not in sequence.

B303

B514

3-1-5

REPLACEMENT PARTS LIST

Mechanical Parts List

SYMBOL-NO P-NO DESCRIPTION

MECHANISM SECTION

A1X TS17581 FRONT ASSEMBLY [MX210EUK]
A1X TS17582 FRONT ASSEMBLY [FX240EUK]
A2 TJ16041 CASE, TOP

A4 TS17598 JACK BOARD [MX210EUK]
A4 TS17599 JACK BOARD [FX240EUK]
A5 TE15285 JACK BOARD
A7 TJ16042 PANEL, BOTTOM
2B5 TJ15947 SHEILD, CYLINDER

2B7 TJ17593 SHIELD ASSEMBL Y
2B8 TJ15122 BUSH, LED(F)
2B9 TJ16014 CUSHION
2B14 TJ16043 CUSHION(PCB)
2B46 TJ15314 ROHM HOLDER

AC001 TE15235 AC CORD

!

2L011 TJ16047 SCREW 3X12
2L012 TJ16047 SCREW 3X12
2L021 TJ10119 SCREW M3X10
2L022 TJ10119 SCREW M3X10

2L031 TJ15953 SCREW M3X8
2L041 TJ10177 SCREW 3X8
2L042 TJ10177 SCREW 3X8
2L043 TJ10177 SCREW 3X8
2L051 TJ15955 SCREW M3X5

SYMBOL-NO P-NO DESCRIPTION

B359 TJ15103 CLEANER LEVER
B360 TJ15104 CLEANER ROLLER
B361 TJ15105 CL POST
B410 TS17511 PINCH ARM (A) ASSEMBL Y
B411 TJ15181 PINCH SPRING

B414 TS17512 BRAKE (S) ASSEMBL Y
B416 TS17513 BRAKE (T) ASSEMBL Y
B417 TS17694 TENSION SPRING
B425 TJ15185 LOCK LEVER SPRING
B426 TJ15186 KICK PULLEY

B482 TJ15992 CASSETTE PLATE
B483 TJ15292 LOCK LEVER
B487 TJ15293 BAND BRAKE
B488 TJ16032 MODE LEVER
B491 TJ15994 CAM GEAR (A)

B492 TJ15995 MODE GEAR
B494 TJ15996 DOOR OPENER (B)
B499 TJ15196 LEVER HOLDER (T)
B501 TJ15997 WORM HOLDER
B502 TJ15198 CAM GEAR (B)

B505 TJ15998 WASHER
B507 TJ14034 WASHER
B508 TJ15199 BRAKE SPRING (S)
B513 TJ15201 WASHER
B514 TJ15202 SCREW RACK

2L099 TJ15954 SCREW M3X8
B2 TS17692 CYLINDER ASSEMBL Y [MX210EUK]
B2 TS17693 CYLINDER ASSEMBL Y [FX240EUK]
B3 TS17442 LOADING MOTOR ASSEMBL Y
B8 TS17443 PULLEY ASSEMBL Y

B9 TJ15152 MOVING GUIDE (S)
B10 TJ15153 MOVING GUIDE (T)
B11 TS17444 LOADING ARM (T) ASSEMBL Y
B12 TS17445 LOADING ARM (S) ASSEMBL Y
B27 TS17446 TENSION LEVER SUB ASSEMBL Y

B31 TS17447 AC HEAD
B35 TS17448 TAPE GUIDE
B37 TJ16031 CAPSTAN MOTOR
B52 TJ15161 CAP BELT
B73 TS17449 FE HEAD

B74 TJ15163 PRISM
B121 TJ15982 WORM
B126 TJ15983 PULLEY
B133 TJ15288 IDLER ASSEMBL Y
B148 TE12612 TG CAP

B300 TJ15985 CASSETTE DRIVE LEVER (R)
B303 TJ15986 DOOR OPENER
B347 TJ15987 GUIDE HOLDER (A)
B354 TJ15988 SLIDER (R)
B355 TJ15989 SLIDER (L)

B516 TJ14034 WASHER
B518 TJ15203 WASHER
B520 TJ16033 BRAKE SPRING
B521 TJ15209 SOFT SPRING
B522 TJ15206 TG POST

B525 TJ16001 LDG BELT
B529 TS17455 CLEANER ASSEMBL Y
B551 TJ15301 FF ARM
B553 TJ16003 REV SPRING
B555 TJ17694 RACK ASSEMBL Y

B557 TJ15215 MOTOR PULLEY
B558 TJ16004 LOADING MOTOR
B559 TS17515 CLUTCH ASSEMBL Y
B560 TJ15303 KICK SPRING
B562 TJ15221 CASSETTE DRIVE LEVER (L)

B563 TJ15222 SLIDER SHAFT
B564 TJ16034 GEAR (M)
B565 TJ16005 SENSOR GEAR
B567 TJ15226 PINCH ARM (B)
B568 TJ15304 BT ARM

B569 TJ16006 CAM HOLDER
B570 TJ16035 CAM RACK SPRING
B571 TJ10229 WASHER
B572 TJ15203 WASHER
B573 TJ16007 REEL (S)

3-2-1

SYMBOL-NO P-NO DESCRIPTION

B574 TJ16008 REEL (T)
B578 TJ15306 TR GEAR (A)
B579 TJ15307 TR GEAR (B)
B580 TJ16036 TR GEAR (C)
B581 TJ16172 CENTER GEAR

B582 TJ15311 TR GEAR SPRING
B583 TJ14034 WASHER
B584 TJ15312 TR GEAR SHAFT
B585 TJ16009 WASHER
B587 TS17514 TENSION LEVER ASSEMBL Y

L1051 TJ14055 SCREW M2.6X6
L1053 TJ15313 SCREW M2.6X8
L1151 TJ15236 SCREW M2.6X4
L1321 TJ10176 SCREW M3X6
L1341 TE13298 SCREW M2.6X6

L1406 TJ15238 SCREW
L1450 TE12971 SCREW M2.6X5
L1461 TJ14061 SCREW M2.6X6
L1466 TJ14066 SCREW M2.6X6
L1467 TJ15958 SCREW M2.6X5

L1468 TJ15959 SCREW M1.7X12

SYMBOL-NO P-NO DESCRIPTION

ACCESSORIES

X1 TS17591 REMOTE CONTROL UNIT [MX210EUK]
X1 TS17592 REMOTE CONTROL UNIT [FX240EUK]
X3 TE15231 RF CORD

3-2-2

Electrica Parts List

Note: Although some parts in the schematic diagrams have different names from those in the parts list,

there is no problem in replacing parts.

SYMBOL-NO P-NO DESCRIPTION

RESISTOR

VR501 TA14561 CARBON P.O.T. 100K OHM B

SEMI-CONDUCTORS

D2 TC10112 DIODE 1SS133(T-77) [FX240EUK]
D001 TC10752 DIODE 1N4005
D002 TC10752 DIODE 1N4005
D003 TC10752 DIODE 1N4005
D004 TC10752 DIODE 1N4005

D005 TC12441 DIODE BA159
D006 TC10112 DIODE 1SS133(T-77)
D007 TC10112 DIODE 1SS133(T-77)
D008 TC10112 DIODE 1SS133(T-77)
D009 TC10112 DIODE 1SS133(T-77)

D011 TC10753 DIODE ERA18-04
D012 TJ15128 DIODE FR202
D013 TJ15128 DIODE FR202
D014 TC10877 DIODE SB140 [MX210EUK]
D014 TJ14082 DIODE SB340 [FX240EUK]

D015 TC10604 ZENER DIODE MTZJT-779.1C
D016 TC10753 DIODE ERA18-04 [MX210EUK]
D018 TC10112 DIODE 1SS133(T-77)
D019 TJ13895 ZENER DIODE MTZJT-775.6B
D021 TC10112 DIODE 1SS133(T-77)

SYMBOL-NO P-NO DESCRIPTION

IC451 TC12617 IC LA72646M-A-MPB [FX240EUK]
IC501 TC12619 IC M37762MCA-1C1GP
IC503 TJ15338 IC BR24C02F-W
IC561 TC12618 IC PT6958-FN-TP

! Q001 TC12451 FET FS1KM-18A

Q002 TE13243 TRANSISTOR KTC3199(BL)
Q003 TE13243 TRANSISTOR KTC3199(BL)
Q004 TC10778 TRANSISTOR KTC3199(Y)
Q051 TJ15342 TRANSISTOR KRA104M
Q052 TC12591 TRANSISTOR KRC103M

Q053 TC10778 TRANSISTOR KTC3199(Y) [FX240EUK]
Q054 TE13235 TRANSISTOR KTC3203(Y) [MX210EUK]
Q054 TC12301 TRANSISTOR KTC3205(Y) [FX240EUK]
Q056 TJ13923 TRANSISTOR KRA103M
Q057 TC12581 TRANSISTOR KTA1281(Y)

Q058 TC12591 TRANSISTOR KRC103M
Q101 TC10784 TRANSISTOR KTA1266(GR)
Q102 TC10784 TRANSISTOR KTA1266(GR)
Q151 TC10778 TRANSISTOR KTC3199(Y) [MX210EUK]
Q152 TC10778 TRANSISTOR KTC3199(Y) [MX210EUK]

Q351 TC10784 TRANSISTOR KTA1266(GR)
Q352 TC10778 TRANSISTOR KTC3199(Y)
Q401 TC10784 TRANSISTOR KTA1266(GR)
Q402 TE13235 TRANSISTOR KTC3203(Y)
Q403 TJ13923 TRANSISTOR KRA103M

D023 TC12611 ZENER DIODE DZ-5.1BSBT265 [MX210EUK]
D051 TC10752 DIODE 1N4005
D052 TC10112 DIODE 1SS133(T-77)
D053 TC10752 DIODE 1N4005 [MX210EUK]
D053 TC12612 DIODE RL201 B-222-2 [FX240EUK]

D056 TJ13896 ZENER DIODE MTZJT-775.1C
D057 TA14581 CARBON RES. 3.3KOHM1/4W [MX210EUK]
D057 TJ13919 ZENER DIODE MTZJT-7710B [FX240EUK]
D101 TC12613 ZENER DIODE DZ-11BSAT265
D102 TC12613 ZENER DIODE DZ-11BSAT265

D103 TC12613 ZENER DIODE DZ-11BSAT265
D105 TC12613 ZENER DIODE DZ-11BSAT265
D153 TC12613 ZENER DIODE DZ-11BSAT265
D154 TC12613 ZENER DIODE DZ-11BSAT265 [FX240EUK]
D155 TC12613 ZENER DIODE DZ-11BSAT265

D156 TC12613 ZENER DIODE DZ-11BSAT265 [FX240EUK]
D301 TC10112 DIODE 1SS133(T-77)
D501 TC10112 DIODE 1SS133(T-77)
D502 TJ13898 LED SIR-563ST3F P
D553 TC10112 DIODE 1SS133(T-77)

D701 TC10607 ZENER DIODE MTZJT-7733D
IC1 TC12622 IC MSP3417G-QG-B8 [FX240EUK]

! IC001 TE13224 PHOTOCOUPLER LTV-817B-F

IC151 TC12615 IC TC4052BF(EL) [MX210EUK]
IC301 TC12616 IC LA71750AM-MTB

Q404 TC10778 TRANSISTOR KTC3199(Y)
Q405 TC10778 TRANSISTOR KTC3199(Y)
Q406 TC10778 TRANSISTOR KTC3199(Y)
Q451 TC12591 TRANSISTOR KRC103M [FX240EUK]
Q501 TE13243 TRANSISTOR KTC3199(BL)

Q502 TC12591 TRANSISTOR KRC103M
Q503 TJ15141 PHOTO TRANSISTOR PT204-6B-12
Q504 TJ15141 PHOTO TRANSISTOR PT204-6B-12
Q505 TJ15141 PHOTO TRANSISTOR PT204-6B-12
Q551 TE13243 TRANSISTOR KTC3199(BL)

Q552 TC12591 TRANSISTOR KRC103M
PS503 TJ15282 PHOTO INTERRUPTER RPI-302C70

TRANSFORMER

! T001 TA14582 PULSE TRANS

COILS

L1 5121287 INDUCTOR 10UH [FX240EUK]
L3 TJ15421 INDUCTOR 18UH [FX240EUK]
L4 5121287 INDUCTOR 10UH [FX240EUK]
L001 TA12047 BEAD CORE

L002 TA12047 BEAD CORE

! L003 TJ14696 LINE FILTER 50MH

L009 TJ13909 CHOKE COIL 47UH
L010 TJ13909 CHOKE COIL 47UH
L012 TA12561 INDUCTOR 100UH

3-2-3

SYMBOL-NO P-NO DESCRIPTION

L101 TA12047 BEAD CORE
L121 TA12047 BEAD CORE+
L251 TJ15419 INDUCTOR
L301 TA12574 INDUCTOR 56UH
L401 TJ13909 CHOKE COIL 47UH

L402 TJ13909 CHOKE COIL 47UH
L451 TA12561 INDUCTOR 100UH [FX240EUK]
L452 5121289 INDUCTOR 22UH [FX240EUK]
L501 TA12561 INDUCTOR 100UH
L561 TA12561 INDUCTOR 100UH

L701 5121287 INDUCTOR 10UH
L702 TJ13909 CHOKE COIL 47UH
L704 TA12556 INDUCTOR 15UH
L851 TJ15138 INDUCTOR 1.8UH

CRYSTALS

X1 TC12623 X'TAL 18.432MHZ [FX240EUK]
X301 TJ14708 X'TAL 4.433619MHZ
X501 TE15284 X'TAL 12.000MHZ
X502 TJ15146 X'TAL 32.768KHZ(20PPM)

MISCELLANEOUS

SYMBOL-NO P-NO DESCRIPTION

TU701 TE15282 TUNER UNIT TMDG1-635A [MX210EUK]
TU701 TE15283 TUNER UNIT TMDG2-632A [FX240EUK]

CN1 TE15287 ANGLE PIN HEADER(9P)
CN506 TS17596 FNT PCB ASSEMBLY
CN651 TJ15147 ANGLE PIN HEADER(3P)
CN701 TS17597 AFV PCB ASSEMBLY [FX240EUK]
F001 TJ14705 FUSE T1.6AL/250V

!

FH001 TE11084 FUSE HOLDER
FH002 TE11084 FUSE HOLDER
FP562 TC12614 LED DISPLAY LFU-4421-2001A
J902 TA12575 BEAD CORE
JK101 TE15286 RGB CONNECTOR

JK102 TE15286 RGB CONNECTOR
JK751 TE15281 RCA JACK [FX240EUK]
JW001 TE15236 FLAT CABLE(8P) [MX210EUK]
JW001 TE15237 FLAT CABLE(11P) [FX240EUK]
JW002 TE15236 FLAT CABLE(8P) [MX210EUK]

JW002 TE15238 FLAT CABLE(12P) [FX240EUK]
JW003 TE15239 FLAT CABLE(2P)
RS501 TS17691 REMOTE RECEIVER MIM-93M9DKF
SW504 TE11957 TACT SWITCH
SW505 TE11957 TACT SWITCH

SW506 TE15141 LEAF SWITCH
SW507 TJ15142 ROTARY MODE SWITCH
SW510 TE11957 TACT SWITCH
SW657 TE11957 TACT SWITCH
SW661 TE11957 TACT SWITCH

SW662 TE11957 TACT SWITCH
SW663 TE11957 TACT SWITCH
SW664 TE11957 TACT SWITCH
SW665 TE11957 TACT SWITCH
SW666 TE11957 TACT SWITCH

3-2-4

CHAPTER 4

SCHEMATIC AND BLOCK DIAGRAMS/CBA’S

SCHEMATIC DIAGRAMS / CBA’S AND TEST POINTS

Standard Notes

WARNING

Many electrical and mechanical parts in this chassis
have special characteristics. These characteristics
often pass unnoticed and the protection afforded by
them cannot necessarily be obtained by using replace­ment components rated for higher voltage, wattage,
etc. Replacement parts that have these special safety
characteristics are identified in this manual and its
supplements; electrical components having such fea­tures are identified by the mark " ! " in the schematic
diagram and the parts list. Before replacing any of
these components, read the parts list in this manual
carefully. The use of substitute replacement parts that
do not have the same safety characteristics as speci­fied in the parts list may create shock, fire, or other
hazards.

Capacitor Temperature Markings

Mark

(B)

Capacity

change rate

10%

±

Standard

temperature

20°C -25~+85°C

Temperature

range

Notes:

1. Do not use the part number shown on these draw­ings for ordering. The correct part number is shown
in the parts list, and may be slightly different or
amended since these drawings were prepared.

2. All resistance values are indicated in ohms

3

(K=10

3. Resistor wattages are 1/4W or 1/6W unless other­wise specified.

4. All capacitance values are indicated in µF
(P=10

5. All voltages are DC voltages unless otherwise
specified.

6. Electrical parts such as capacitors, connectors,
diodes, IC’s, transistors, resistors, switches, and
fuses are identified by four digits. The first two dig­its are not shown for each component. In each
block of the diagram, there is a note such as shown
below to indicate these abbreviated two digits.

, M=106).

-6

µF).

(F) +30 - 80% 20°C -25~+85°C

(SR)

(Z) +30 - 80% 20°C -10~+70°C

Capacitors and transistors are represented by the following symbols.

±

15%

20°C -25~+85°C

CBA Symbols

(Top View) (Bottom View)

+

Electrolytic Capacitor

(Bottom View)

Transistor or Digital Transistor

E C B

(Top View)

NPN Transistor

E C B

(Top View)

PNP Transistor

E C B

Schematic Diagram Symbols

Digital Transistor

(Top View)

E C B

NPN Digital Transistor

(Top View)

PNP Digital
Transistor

E C B

4-1-1

LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES:

1. CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE.

2. CAUTION:

Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F001) is blown, first check to see that all components in the power supply circuit are not defective
before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the
power supply circuit to fail.

3. Note:

(1) Do not use the part number shown on the drawings for ordering. The correct part number is shown in the parts

list, and may be slightly different or amended since the drawings were prepared.

(2) To maintain original function and reliability of repaired units, use only original replacement parts which are

listed with their part numbers in the parts list section of the service manual.

4. Wire Connectors

(1) Prefix symbol "CN" means "connector" (can disconnect and reconnect).
(2) Prefix symbol "CL" means "wire-solder holes of the PCB" (wire is soldered directly).

5. Mode: SP/REC

6. Voltage indications for PLAY and REC modes on the schematics are as shown below:

The same voltage for
both PLAY & REC modes

7. How to read converged lines

1-D3

Distinction Area

Line Number

(1 to 3 digits)

Examples:

1. "1-D3" means that line number "1" goes to area "D3".

2. "1-B1" means that line number "1" goes to area "B1".

8. Test Point Information

: Indicates a test point with a jumper wire across a hole in the PCB.

: Used to indicate a test point with a component lead on foil side.

Unit: Volts

5.0

231

5.0

PLAY mode
REC mode

(2.5)

Indicates that the voltage
is not consistent here.

3

AREA D3

2

1

ABCD

AREA B1

1-D3

1-B1

4-1-2

: Used to indicate a test point with no test pin.

: Used to indicate a test point with a test pin.

WIRING DIAGRAM

AC CORD

NOTE FOR WIRE CONNECTORS:

1. PREFIX SYMBOL "CN" MEANS CONNECTOR.
(CAN DISCONNECT AND RECONNECT.)

2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDER
HOLES OF THE PCB.
(WIRE IS SOLDERED DIRECTLY.)

(DECK ASSEMBLY)

AC HEAD ASSEMBLY

AUDIO

ERASE HEAD

AUDIO HEAD

CONTROL HEAD

FE HEAD

CYLINDER ASSEMBLY

DRUM
MOTOR

VIDEO
(L) HEAD

VIDEO
(R) HEAD

VIDEO
(R)1 HEAD

VIDEO
(L)1 HEAD

VIDEO
(L)2 HEAD

VIDEO
(R)2 HEAD

Hi-Fi AUDIO
(R) HEAD

Hi-Fi AUDIO
(L) HEAD

FULL
ERASE HEAD

PG
SENSOR

M

MOTOR

CL287

AE-H

AE-H/FE-H

A-COM

A-PB/REC

CTL(+)

CTL(-)

ANT-IN ANT-OUT

VT-FX240EUK

CN701 CN1

SENSOR CBA

SENSOR CBA

CL504
1
2
3
4
5
6

CAPSTAN MOTOR

MLOADING

AE-H

1

AE-H/FE-H2
A-COM3
A-PB/REC4
CTL(+)5

6

CTL(-)

CL501

FE-H2
FE-H GND1

CL502

12 C-F/R

AL+15V/+12V

11
10 AL+12V(1)

9

P-ON+5V
GND8
C-FG

7

C-CONT

6

GND5
D-FG4
LM-FWD/REV

3

D-CONT

2

D-PG1

VT-MX210EUK

CL253

MAIN CBA

1 NU

SIF

2
3 GND
4

TU-AUDIO(R)
TU-AUDIO(L)5
P-ON+5V

6

P-ON+5V

7

IIC BUS-SCL8
IIC BUS-SDA9

CL151

JW002

1 V-OUT1

GND

2
3 V-IN1
4

AL+12V(2)
NU5
A-OUT1(R)

6

JK1-8P-OUT

7

A-IN1(L)8
NU9
A-IN1(R)

10

GND

11

A-OUT1(L)12

CL152 CL102

JW001

1 V-OUT2

GND

2
3 V-IN2
4

NU
GND5
A-OUT2(R)

6

SC2-IN

7

A-IN2(L)8
A-IN2(R)9
GND

10

A-OUT2(L)

11

1
2
3
4
5
6
7
8
9

CL101
1
2
3
4
5
6
7
8

VT-FX240EUK

9

10
11
12

1
2
3
4
5
6
7
8

VT-FX240EUK

9

10
11

AFV CBA

JACK CBA

JK101

1

3

5

7

9

11

13

15

17

19

21

JK102

1

3

5

7

9

11

13

15

17

19

21

2

4

6

8

10

12

14

16

18

20

2

4

6

8

10

12

14

16

18

20

V(L)1
V-COM2

3 V(R)

JW003

1 1

KEY-1

2

GND

CL509CL508

2

POWER SW CBA

CL253
V(R)-11
V-COM2

3 V(L)-1

V(L)-2

4

V-COM5
V(R)-26
Hi-Fi-A(R)7
Hi-Fi-COM8

1

KEY2

2

GND

3 3

KEY1

CN651CL506
1
2

FUNCTION CBA

Hi-Fi-A(L)9

VT-FX240EUK

4-1-3

Main 1/5 Schematic Diagram

4-1-4

Main 2/5 Schematic Diagram

WF1

V-OUT E-E
10usec 50mV x 10

Waveforms

(TP751 of Main CBA)

WF1

UPPER

WF2

LOWER

V-OUT 0.1V x 10
RF-SW 0.5V x 10

50usec

(TP751 of Main CBA)

(TP302 of Main CBA)

WF5

C-PB 10mV x 10
RF-SW 0.5V x 10

5msec

UPPER

LOWER

WF2

(TP302 of Main CBA)

(TP301 of Main CBA)

4-1-5

Main 3/5 Schematic Diagram

4-1-6

Main 4/5 Schematic Diagram

CAUTION !

Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.
If Main Fuse (F001) is blown, check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.

CAUTION

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE FUSE.

NOTE :
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.

4-1-7

Main 5/5 Schematic Diagram ( VT-FX240EUK )

4-1-8

Function Schematic Diagram

4-1-9

AFV Schematic Diagram (VT-FX240EUK )

4-1-10

Jack Schematic Diagram

4-1-11

Main CBA Top View

CAUTION !

Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.
If Main Fuse (F001) is blown, check to see that all components in the power supply circuit are not
defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.

BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER
SUPPLY CIRCUIT , AN ISOLATION TRANSFORMER MUST BE USED.
ALSO , IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUT
SLOWLY , WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLY
CIRCUIT , A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.

Sensor CBA Top View

NOTE :
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.

CAUTION

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE FUSE.

WF1

TP751
V-OUT

TP506

END-S

WF2

TP302
RF-SW

VR501

SW-P

4-1-12

TP502

S-INH

TP303

CTL

WF5

TP301

C-PB

Main CBA Bottom View

CAUTION !

Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.
If Main Fuse (F001) is blown, check to see that all components in the power supply circuit are not
defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.

BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER
SUPPLY CIRCUIT , AN ISOLATION TRANSFORMER MUST BE USED.
ALSO , IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUT
SLOWLY , WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLY
CIRCUIT , A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.

NOTE :
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.

CAUTION

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE FUSE.

4-1-13

Function CBA Top View Function CBA Bottom View

Power SW CBA Top View

Power SW CBA Bottom View

4-1-14

AFV CBA Top View AFV CBA Bottom View

4-1-15

Jack CBA Top View

Jack CBA Bottom View

4-1-16

Servo/System Control Block Diagram

BLOCK DIAGRAMS

SW510 POWER

POWER SW CBA

(DECK ASSEMBLY)

CONTROL
HEAD

AC HEAD ASSEMBLY

Q504

ST-S

SENSOR CBA

Q505

END-S

SENSOR CBA

CYLINDER ASSEMBLY CAPSTAN MOTOR

PG
SENSOR

DRUM
MOTOR

M

LOADING
MOTOR

CL509

CL287

M

1 1KEY-1

5 5CTL(+)
6 6CTL(-)

CL508

CL504

CAPSTAN
MOTOR

MAIN CBA

TP506

END-S

M

SW507
LD-SW

Q503

T-REEL

AL+5V

PS503

S-REEL

VR501

SW-POINT

CL502

12 C-F/R
11

AL+15V/+12V

10 AL+12V(1)

P-ON+5V

9

GND

8

C-FG

7

C-CONT

6

GND

5

D-FG

4

LM-FWD/REV

3

D-CONT

2

D-PG

1

D502
S-LED

TIMER+5V

AL+5V

FROM/TO
POWER
SUPPLY
BLOCK

AL+5V

Q502

Q501

RESET

AL+5V

SW506

REC-SAFETY

AL+15V/+12V
AL+12V(1)
P-ON+5V

C-POW-SW
P-ON-H
P-DOWN-L

RS501

REMOTE
SENSOR

TP501

CTL

IC501

(SERVO/SYSTEM CONTROL)

CTL97

FF/REW-L84

REMOCON-IN

14

LD-SW9

95

CTL(+)
CTL(-)

94
10

ST-S

4

END-S

T-REEL

80

S-REEL79

RESET

34

PG-DELAY

2

REC-SAF-SW

31

C-F/R

78

C-FG

87

C-CONT

76

D-FG

89

LM-FWD/REV

81

D-CONT77
D-PG

90

C-POW-SW

66

P-ON-H

67

P-DOWN-L

86

KEY- 1

KEY- 2

DRV-DATA

DRV-STB
DRV-CLK

AUDIO-SW-1
AUDIO-SW-2 30

A-MUTE-H

Hi-Fi-H-SW

A-MODE

IIC-BUS SDA

IIC-BUS SCL

D-REC-H

RF-SW

C-ROTA

D-V SYNC

V-ENV

C-SYNC

H-A-SW

H-A-COMP

7

8

68
69
70

VT-MX210EUK

29

83

VT-FX240EUK

19
61

72
71

65
18
15
13

6

58

16
17

VT-FX240EUK

TP507

S-INH

KEY
SWITCH

SW505

CH-UP

IC561

(FIP DRIVER)

DRV-DATA

28

DRV-STB

2

DRV-CLK

1

CL506 CN651

1 1KEY-2

FP562

LED CLOCK

23

G1

22

G2

21

G3

20

G4

S1

7

S2

8

S7

13

S8

14

S9

16

S10

17

AUDIO-SW-1
AUDIO-SW-2

IIC-BUS SDA

IIC-BUS SCL

IIC-BUS SDA

IIC-BUS SCL

IIC-BUS SDA

IIC-BUS SCL

FUNCTION CBA

TU701(TUNER UNIT)

SDA

3

SDA

12

SCL

5

SCL

11

IC503 (MEMORY)

SDA

5

SCL

6

A-MUTE-H

Hi-Fi-H-SW

A-MODE

D-REC-H

RF-SW

C-ROTA

D-V SYNC

V-ENV

C-SYNC

H-A-SW

H-A-COMP

KEY SWITCH

TO
AUDIO BLOCK

FROM/TO
Hi-Fi AUDIO
BLOCK

FROM/TO
VIDEO BLOCK

4-2-1

Video Block Diagram ( VT-MX210EUK )

MAIN CBA

52

BUFFER

Q351

TU701

VIDEO

TU-VIDEO

6

24

IC501 (OSD)

OSD
CHARACTER
MIX

IC301

(Y/C SIGNAL PROCESS)

48
50
52

TUNER

IN1

IN2

TO SERVO/SYSTEM
CONTROL BLOCK

50

65

BYPASS

AGC

IIC BUS SDA
IIC BUS SCL

Y. DELAY

LUMINANCE
SIGNAL
PROCESS

69684643

SERIAL

DECORDER

REC-VIDEO SIGNAL PB-VIDEO SIGNAL MODE: SP/REC

7978

CL253

R

P

HEAD
AMP

96
95
93
94

V(L)

V-COM

V(R)

(DECK ASSEMBLY)

CYLINDER ASSEMBLY

1
2
3

VIDEO (L)
HEAD

VIDEO (R)
HEAD

V-OUT1

V-IN1

V-OUT2

V-IN2

JACK CBA

JK101

19
20

JK102

19
20

Q101

BUFFER

Q102

BUFFER

CL101

1

V-OUT1

V-IN1

3 3

CL102

1

V-OUT2

V-IN2 3

3

CL151

1

CL152

1

WF1

TP751

V-OUT

56

61
63

PB/EE

TUNER

IN1

PB/EE

MUTE

MUTE

IN2

CHARA.
INS.

1/2

FBC

PR

AGC VXO

58 59

Y/C
MIX

CCD 1H DELAY

CHROMINANCE
SIGNAL
PROCESS

2928

X301

4.43MHz

Y

+

C

R P R P

21

TP301

C-PB

WF5

REC FM
AGC

D-REC-H

RF-SW/C-ROTA

D-V-SYNC

V-ENV

C-SYNC

80

70
62
84
67

WF2

TP502
RF-SW

D-REC-H

RF-SW

C-ROTA

D-V-SYNC

V-ENV

C-SYNC

TO SERVO/SYSTEM
CONTROL BLOCK

4-2-2

Video Block Diagram ( VT-FX240EUK )

MAIN CBA

52

BUFFER

Q351

IC501 (OSD)

OSD
CHARACTER
MIX

IC301

(Y/C SIGNAL PROCESS)

TO SERVO/SYSTEM
CONTROL BLOCK

50

65

I2C BUS SDA
I2C BUS SCL

REC-VIDEO SIGNAL PB-VIDEO SIGNAL MODE: SP/REC

69684643

7978

V-OUT1

V-IN1

JACK CBA

JK101

19
20

TU701

Q101

BUFFER

VIDEO

TU-VIDEO

CL101

1

V-OUT1
V-IN1

3 3

24

6

CL151

1

WF1

TP751

V-OUT

48
50
52

56

61
63

TUNER

PB/EE

TUNER

IN1

PB/EE

MUTE

IN1

IN2

IN2

MUTE

Y. DELAY

BYPASS

AGC

CHARA.
INS.

1/2

FBC

PR

AGC VXO

LUMINANCE
SIGNAL
PROCESS

Y/C
MIX

SERIAL

DECORDER

CCD 1H DELAY

CHROMINANCE
SIGNAL
PROCESS

R

Y

+

C

R P R P

P

REC FM
AGC

SP

SP

HEAD
AMP

EP

EP
HEAD
AMP

D-REC-H

RF-SW/C-ROTA

D-V-SYNC

H-A-SW

H-A-COMP

V-ENV

C-SYNC

96
95
93
94

90
89
88
87

80

70
62
71
83
84
67

V-COM

V-COM

WF2

TP502

RF-SW

CL253

V(R)-1

V(L)-1

V(L)-2

V(R)-2

D-REC-H

RF-SW

C-ROTA

D-V-SYNC

H-A-SW

H-A-COMP

V-ENV

C-SYNC

(DECK ASSEMBLY)

CYLINDER ASSEMBLY

1
2
3
4
5
6

TO SERVO/SYSTEM
CONTROL BLOCK

VIDEO (R)-1
HEAD

VIDEO (L)-1
HEAD

VIDEO (L)-2
HEAD

VIDEO (R)-2
HEAD

V-OUT2

V-IN2

JK102

19
20

Q102

BUFFER

CL102

1

V-OUT2
V-IN2 3

3

CL152

1

58 59

X301

4.43MHz

2928

21

TP301

C-PB

WF5

4-2-3

Audio Block Diagram ( VT-MX210EUK )

PB-AUDIO SIGNAL REC-AUDIO SIGNAL Mode : SP/REC

MAIN CBA

TU701

JK101

A-IN1(R)
A-IN1(L)
A-OUT1(R)
A-OUT1(L)

A-IN2(R)
A-IN2(L)
A-OUT2(R)
A-OUT2(L)

2
6
1
3

JK102

2
6
1
3

(DECK ASSEMBLY)

ACE HEAD ASSEMBLY

AUDIO
HEAD

AUDIO
ERASE
HEAD

FE HEAD

FULL
ERASE
HEAD

JACK CBA

A-PB/REC 4
A-COM 3
AE-H 1
AE-H/FE-H 2

CL101

CL102

CL287

8
6

8
6

A-IN1
A-OUT1

A-IN2
A-OUT2

CL151

8
6

CL152

8
6

CL504
4 A-PB/REC
3 A-COM
1 AE-H
2 AE-H/FE-H

CL501
2 FE-H
1 FE-H-GND

TU-AUDIO

Q401

Q402

BIAS
OSC

Q404
(PB=ON)

Q405
(PB=ON)

21

+5V

Q406

Q403

13
15
17

5
6

1
2

SWITCHING
D-REC-OFF

+5V

IC301 (AUDIO SIGNAL PROCESS)

TUNER
IN1
IN2

PB-ON

EQ
AMP

SP/LP-ON

7

AUTO
BIAS

3

Q151

BUFFER

Q152

BUFFER

98

100

INV

IC151 (SWITCHING)

3

13

R

ATT

P

REC
AMP

AUDIO HD-SW
CONTROL

16

PB/EE
PB/EE
PB/EE
IN2

TUNER
PB/EE
IN1
IN1

SW

CTL

ALC
DET

ALC

1
5
2
4

12
14
15
11

10

9

LINE
AMP

REC-ON

SERIAL

DECODER

68 69

AUDIO-SW-1
AUDIO-SW-2

MUTE

71

TO SERVO/SYSTEM
CONTROL BLOCK

A-MUTE-H
IIC BUS-SDA
IIC BUS-SCL

12

11

TO SERVO/SYSTEM
CONTROL BLOCK

4-2-4

Audio Block Diagram ( VT-FX240EUK )

PB-AUDIO SIGNAL REC-AUDIO SIGNAL Mode : SP/REC

MAIN CBA

TO Hi-Fi
AUDIO BLOCK

(DECK ASSEMBLY)

ACE HEAD ASSEMBLY

AUDIO
HEAD

AUDIO
ERASE
HEAD

N-A-PB
N-A-REC

CL287
A-PB/REC 4
A-COM 3
AE-H 1
AE-H/FE-H 2

CL504
4 A-PB/REC
3 A-COM
1 AE-H
2 AE-H/FE-H

Q401

Q402

BIAS
OSC

+5V

Q406

IC301

(AUDIO SIGNAL PROCESS) 1513 17

TUNER IN2

INV

R

98

ATT

P

REC
AMP

5
6

1
2

PB-ON

EQ
AMP

SP/LP-ON

AUTO
BIAS

7

3

100

IN1

ALC

DET

ALC

LINE
AMP

REC-ON

MUTE

12

11

FULL
ERASE
HEAD

FE HEAD

CL501
2 FE-H
1 FE-H-GND

Q404 (PB=ON)

Q403

Q405
(PB=ON)

SWITCHING
D-REC-OFF

+5V

AUDIO HD-SW
CONTROL

16

SERIAL

DECODER

68 69

71

A-MUTE-H
IIC BUS-SDA
IIC BUS-SCL

TO SERVO/SYSTEM
CONTROL BLOCK

4-2-5

Hi-Fi Audio Block Diagram ( VT-FX240EUK )

REC-AUDIO SIGNALPB-AUDIO SIGNAL Mode : SP/REC

A-IN1(R)
A-IN1(L)
A-OUT1(R)
A-OUT1(L)

A-IN2(R)
A-IN2(L)
A-OUT2(R)
A-OUT2(L)

22

2
6
1
3

2
6
1
3

TU701

SIF

JK101

JK102

JACK CBA

CL101

10

12

CL102

11

A-IN1(R)
A-IN1(L) 8

8
6

A-OUT1(R)
A-OUT1(L) 12

9

A-IN2(R)
A-IN2(L) 8

8
6

A-OUT2(R)
A-OUT2(L) 11

AUDIO

CL151

10

6

CL152

9

6

IC451 (MTS/ SAP/ Hi-Fi AUDIO PROCESS/ Hi-Fi HEAD AMP)

76

2

75

69
73

51
65

SW

ALC

D.C.

R-CH
INSEL

SW

ALC

D.C.

R-CH
PNR

47

48

P

R

LIM DEV

MAIN CBA

SW
NOISE

COMP

VCO

OUTPUT
SELECT

R-CH BPF

LPF

DO
DET

SERIAL
DATA
DECODER

ENV
DET

ALC

MUTE

38
39

23

80

78

IIC-BUS SDA

IIC-BUS SCL

Q451

A-MODE

TO
SERVO/ SYSTEM
CONTROL BLOCK

2

4-2-6

67

7

11

53

AFV CBA

CN1

2

SIF

2

IF SINAL
PROCESS

TO AUDIO BLOCK

4

TU-AUDIO(R)
TU-AUDIO(L)

5

N-A-REC
N-A-PB

CN701CN1CN701

4
5

6
4

NOR
SW

L-CH
INSEL

13

14

L-CH
PNR

LIM DEV

R

P

SW
NOISE

HOLD
PULSE

NOISE
DET

VCO

COMP

MIX

LPF

L-CH BPF

LIM

COMP

31 30

40

26

R

L

24

27

Hi-Fi-A(R) 7
Hi-Fi-COM 8
Hi-Fi-A(L) 9

Hi-Fi-H-SW

CYLINDER
ASSEMBLY

CL253

Hi-Fi
AUDIO
(R) HEAD

Hi-Fi
AUDIO
(L) HEAD

Power Supply Block Diagram

AC001

NOTE :
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.

HOT CIRCUIT. BE CAREFUL.

F001
T1.6A L 250V

L003

LINE
FILTER

D001 - D004

BRIDGE
RECTIFIER

CAUTION

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE T1.6AL/250V FUSE.

T001

Q051

2

4

Q001

12

Q052

13

14

Q058

15

CAUTION !

Fixed voltage (or Auto voltage selectable ) power supply circuit is used in this unit.
If Main Fuse (F001) is blown, check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.

MAIN CBA

VT-FX240EUK

Q053

P-ON+44V
P-ON-H
AL+15V/+12V
AL+9V
AL+12V

Q057

Q054

C-POW-SW
AL+5V
TIMER+5V
P-ON+5V
P-DOWN-L
AL-5V

HOT

Q003

Q002

7

6

IC001

ERROR
VOLTAGE DET

4

Q004

(SHUNT REGULATOR)

16

VT-MX210EUK

11

17

18

Q056

1

23

COLD

REG

4-2-7

SYSTEM CONTROL TIMING CHARTS

VT-MX210EUK

Mode SW : LD-SW

LD-SW Position detection

A/D Input voltage Limit

(Calculated voltage)

3.76V~4.50V
(4.12V)

4.51V~5.00V
(5.00V)

0.00V~0.25V
(0.00V)

1.06V~1.50V
(1.21V)

0.66V~1.05V
(0.91V)

1.99V~2.60V
(2.17V)

1.51V~1.98V
(1.80V)

3.20V~3.75V
(3.40V)

0.26V~0.65V
(0.44V)

4.51V~5.00V
(5.00V)

2.61V~3.19V
(2.97V)

Note :

EJ RS: Loading FWD (LM-FWD/REV “H”)
RS EJ: Loading REV (LM-FWD/REV “L”)

Stop (A) = Loading
Stop (B) = Unloading

Note :

Symbol Loading Status

EJ Eject

CL Eject ~ REW Reel

SB REW Reel ~ Stop(B)

TL Stop(B) ~ Brake Cancel
FB Brake Cancel
SF ~ Stop(A)

AU Stop(A) ~ Play / REC

AL Play / REC ~ Still / Slow
SS Still / Slow ~ Capstan Reversal
GC Capstan Reversal ~ RS (REW Search)
RS RS (REW Search)

Symbol

EJ

CL

SB

TL

FB

SF

AU

AL

SS

GC

RS

Note:

DISPLAY

-OFF

STOP

PLAY RS

FS

STILLPLAY STOPPLAY

POWER

62 D-REC-H

D-PB-L

0.8S

1.5S(2H)

2.5S(4H)0.2S

0.2S

1.0S

1.0S

0.2S 0.8S

67 P-ON

83 A-MUTE-H

0.3S

6 mS 6 mS160 mS80 mS

ON

ROTATION

DRUM

ON

78 C-F/R

0.2S

0.2S

0.2S

SP MODE

>5.0S 5.0S

LP/SLP MODE

0.4S

Fig. 1

C-DRIVE

"Z"

1.2S

0.4S

0.3S

LM-FWD "M"

/REV

0.2S

PIN NO.

EJ

CL/GC

FB

AU AU

AU

SS

GC
AL

9 LD-SW

CLEJ
SB TL SB

TL
SF FB SF SF ALAL

GC

RS AL AU SFAU

SS

EJECT

CASS.LOAD

LD-FWD

0.2S

LD-REV

0.7S

LD-FWD

0.2S
LD-REV

0.2S
LD-FWD

0.5S

LD-REV

STOP(A)

LD-FWD

PLAY

LD-FWD

RS

LD-REV

0.2S

LD-FWD

FS

PLAY

STILL

NOISE
CANCEL

STILL

NOISE
CANCEL

STILL

PLAY

LD-REV

STOP(A)

ST-S,/
END-S
"OFF"

PLAY

REW

FF

PLAY

PAUSE

PAUSE ON

PAUSE
OFF

PAUSE ON

PAUSE
OFF

PLAY

STOP
/EJECT

81

AL

RS

SF

AU

TL

FB

SS

SB

0.3S

1. EJECT (POWER OFF) -> CASSETTE IN (POWER ON) -> STOP(B) -> STOP(A) -> PLAY -> RS -> FS -> PLAY -> STILL -> PLAY -> STOP(A)

4-3-1

1. EJECT (POWER OFF) -> CASSETTE IN (POWER ON) -> STOP(B) -> STOP(A) -> PLAY -> RS -> FS -> PLAY -> STILL -> PLAY -> STOP(A)

PLAY

PAUSE

PIN NO.

9 LD-SW

CL/GC
EJ
AL
RS
SF
AU
TL
FB
SS
SB

ST-S,/

END-S

EJECT

"OFF"

CLEJ

0.2S

LD-FWD

CASS.LOAD

SB TL SB

0.7S

LD-REV

LD-FWD

TL

FB

0.2S

0.2S

LD-REV

SF FB SF SF ALAL

AU AU

LD-FWD

0.5S

LD-REV

STOP(A)

PLAY

LD-FWD

AU

PLAY

PAUSE

PAUSE ON

PAUSE

OFF

NOISE

CANCEL

PAUSE ON

STILL

REW

PLAY

LD-FWD

GC

SS

FF

LD-REV

RS AL AU SFAU

GCSSAL

0.2S

LD-FWDRSFS

STILL

PLAY

NOISE

CANCEL

OFF

STILL

PLAY

STOP

/EJECT

LD-REV

STOP(A)

81

LM-FWD "M"

78 C-F/R

DRUM
ROTATION

67 P-ON

83 A-MUTE-H

62 D-REC-H

VT-MX210EUK

/REV

C-DRIVE

D-PB-L

DISPLAY

"Z"

ON

ON

POWER

-OFF

1.5S(2H)

2.5S(4H)0.2S

0.2S

1.2S

0.2S

0.2S

STOP

0.4S

0.2S

0.3S

0.2S

0.8S

PLAY RS

0.3S

0.3S

>5.0S 5.0S

LP/SLP MODE

SP MODE

6 mS 6 mS160 mS80 mS

1.0S

FS

STILLPLAY STOPPLAY

1.0S

0.2S 0.8S

0.4S

Fig. 1

EJ

CL

SB

TL

FB

SF

AU

AL

Symbol

SYSTEM CONTROL TIMING CHARTS

(3.40V)

(1.80V)

3.20V~3.75V

A/D Input voltage Limit

LD-SW Position detection

Mode SW : LD-SW

(1.21V)

(0.91V)

3.76V~4.50V

(4.12V)

(5.00V)

(0.00V)

1.06V~1.50V

4.51V~5.00V

0.00V~0.25V

0.66V~1.05V

1.99V~2.60V

(2.17V)

1.51V~1.98V

(Calculated voltage)

0.26V~0.65V

SS

RS

GC

(5.00V)

2.61V~3.19V

(2.97V)

EJ Eject

TL Stop(B) ~ Brake Cancel

CL Eject ~ REW Reel

SB REW Reel ~ Stop(B)

FB Brake Cancel

AL Play / REC ~ Still / Slow

SF ~ Stop(A)

AU Stop(A) ~ Play / REC

SS Still / Slow ~ Capstan Reversal

RS RS (REW Search)

GC Capstan Reversal ~ RS (REW Search)

(0.44V)

4.51V~5.00V

Symbol Loading Status

Note:

Note :

EJ RS: Loading FWD (LM-FWD/REV “H”)

RS EJ: Loading REV (LM-FWD/REV “L”)

Stop (A) = Loading

Stop (B) = Unloading

Note :

4-3-1

2. STOP(A) -> FF -> STOP(A) -> REW -> STOP(A) -> REC -> PAUSE -> PAUSE or REC -> STOP(A) -> EJECT

STOP

PIN NO.

9

LD-SW

CL/GC
EJ
AL
RS
SF
AU
TL
FB
SS
SB

81
LM-FWD "M"

/REV

C-DRIVE

78

C-F/R

DRUM
ROTATION

67

P-ON

FF

0.2S

STOP(A)

LD-REV

SF FBTL AL

FB

"Z"

ON

ON

LD-FWD

FB

0.2S

FF

/EJECT

LD-REV

2.0S

0.5S

LD-FWD

SF SF

AU AU

REW

STOP(A)

LD-REV

TL

AU FB FB AU

0.4S

LD-REV

0.2S

0.2S

STOP

LD-FWD

REW

SF SF SF AUAL ALFBSF

/EJECT

LD-REV

2.0S

LD-FWD

0.5S

0.4S

LD-REV

REC

STOP(A)

0.2S

LD-FWD

REC

PAUSE

GC

SS

LD-FWD

2.5S Short REV

STOP

/EJECT

REC or

PAUSE

LD-FWD

REC PAUSE

LD-REV

0.2S

AU AU

GCSSAL

REC

GCRS AL AL SF FB TL SB CL EJRS SS

SS

LD-FWD

LD-FWD

LD-REV

1.5S

0.2S

GC AL AU

0.5S

0.4S

LD-REV

STOP

/EJECT

STOP(A)

LD-REV

0.2S

LD-REV

0.5S

0.1S

0.2S

0.5S

ST-S,/

END-S

CASS. UNLD

4-3-2

"ON"

EJECT

Fig. 2

83

65

A-MUTE-H

D-PB-L

D-REC-H

DISPLAY

STOP

0.1S

STOPFF

REW STOP

REC

1.2S

RECREC PAUSE STOP

VT-FX240EUK

13 RF-SW

F-AD
(Internal Signal)

The first rise of RF-SW after a rise in F-AD signal

5 C-DRIVE

37 PB CTL

10 C-F/R

AT

"L" "L"

"H"

Acceleration Detection (T1)

"Z"

ST

"H"

BL

Stop detection (T2)

Slow Tracking Value

Reversal Limit Value

11 H-A-SW

12 ROTA

4-3-3

STILL FRAME ADVANCE STILL

Fig. 3

13 RF-SW

F-AD
(Internal Signal)

The first rise of RF-SW after a rise in F-AD signal

AT

5 C-DRIVE

37 PB CTL

10 C-F/R

"H"

"L" "L"

Acceleration Detection (T1)

"Z"

ST

"H"

BL

Stop detection (T2)

Slow Tracking Value

Reversal Limit Value

11 H-A-SW

12 ROTA

STILL STILL

FRAME ADVANCE

Fig. 4

4-3-4

1. EJECT (POWER OFF) -> CASSETTE IN (POWER ON) -> STOP(B) -> STOP(A) -> PLAY -> RS -> FS -> PLAY -> STILL -> PLAY -> STOP(A)

PIN NO.

9 LD-SW

CL/GC
EJ
AL
RS
SF
AU
TL
FB
SS
SB

81
LM-FWD "M"

/REV

C-DRIVE

78 C-F/R

DRUM
ROTATION

67 P-ON

83 A-MUTE-H

D-PB-L

"Z"

ON

ON

ST-S,/

END-S

EJECT

0.2S

"OFF"

CASS.LOAD

CLEJ SB TL SB

0.2S

LD-FWD

2.5S

LD-REV

0.7S

0.2S

LD-FWD

1.2S

0.2S

0.2S

PAUSE

PLAY

0.2S

0.2S

LD-FWD

LD-REV

TL

FB

AU AU

0.5S

LD-REV

0.4S

0.2S

STOP(A)

LD-FWD

AU

REW

PLAY

LD-FWD

GC

SS

FF

RS

LD-REV

RS AL AL AL SFSS

AU AUSF FB SF SF ALAL

GCSSAL

0.3S

0.2S

LD-FWD

FS

(SLOW)

PLAY

PLAY

LD-FWD

PLAY

0.2S

LD-REV

STILL(SLOW)

AL AU

Refer to STILL/
SLOW TIMING

LD-FWD

PLAY

0.3S

STOP

/EJECT

LD-REV

0.4S

STOP(A)

Fig. 5

CHART Fig. 3, 4.

0.3S

0.2S

1.0S

0.8S

0.5S

1.2S

0.2S

65 D-REC-H

DISPLAY

POWER

-OFF

STOP

PLAY RS

FS

STILL(SLOW)PLAY STOPPLAY

4-3-5

2. STOP(A) -> FF -> STOP(A) -> REW -> STOP(A) -> REC -> PAUSE -> PAUSE or REC -> STOP(A) -> EJECT

STOP

PIN NO.

9

LD-SW

CL/GC
EJ
AL
RS
SF
AU
TL
FB
SS
SB

81
LM-FWD "M"

/REV

C-DRIVE

78

C-F/R

DRUM
ROTATION

67

P-ON

FF

0.2S

STOP(A)

LD-REV

FF

LD-FWD

SF FBTL AL

FB

FB

0.2S

"Z"

ON

ON

/EJECT

LD-REV

2.0S

0.5S

LD-FWD

SF SF

AU AU

REW

STOP(A)

LD-REV

TL

AU FB FB AU

0.4S

LD-REV

0.2S

0.2S

STOP

LD-FWD

REW

SF SF SF AUAL ALFBSF

/EJECT

LD-REV

2.0S

LD-FWD

0.5S

LD-REV

0.4S

REC

STOP(A)

0.2S

LD-FWD

REC

PAUSE

GC

SS

LD-FWD

STOP

REC or

PAUSE

LD-FWD

REC PAUSE

LD-REV

2.5S Short REV

GCSSAL

0.2S

AU AU

REC

/EJECT

LD-FWD

GCRS AL AL SF FB TL SB CL EJRS SS

SS

LD-FWD

LD-REV

1.5S

0.2S

GC AL AU

0.5S

0.4S

LD-REV

STOP

/EJECT

STOP(A)

LD-REV

0.2S

LD-REV

0.5S

0.1S

0.2S

0.5S

ST-S,/

END-S

CASS. UNLD

4-3-6

"ON"

EJECT

Fig. 6

83

65

A-MUTE-H

D-PB-L

D-REC-H

DISPLAY

STOP

0.1S

STOPFF

REW STOP

REC

1.2S

RECREC PAUSE STOP

IC PIN FUNCTION DESCRIPTIONS

Comparison Chart of Models and Marks

Model Mark

VT-MX210EUK A

VT-FX240EUK B

IC501( SERVO / SYSTEM CONTROL IC )

“H” ≥ 4.5V, “L” ≤ 1.0V

Pin

Mark

No.

1IN

2IN

3IN

4IN

5IN

6IN

7IN

8IN

9IN

10 OUT

11 -

12 -

13 OUT

14 IN

15 OUT

IN/

Signal

OUT

Name

SC2-IN

PG­DELAY

POW­SAF

END-S

AFC

V-ENV

KEY-1

KEY-2

LD-SW

ST-S

N.U. Not Used

N.U. Not Used

D-V­SYNC

REMOC
ON-IN

C­ROTA

Function

Input Signal
from Pin 8 of
SCART2

Video Head
Switching Pulse
Signal Adjusted
Voltage

P-ON Power
Detection Input
Signal

Tape End
Position
Detect Signal

Automatic
Frequency
Control Signal

Video Envelope
Comparator
Signal

Key Scan Input
Signal 1

Key Scan Input
Signal 2

Deck Mode
Position
Detector Signal

Tape Start
Position
Detector Signal

Dummy V-sync
Output

Remote
Control Sensor

Color Phase
Rotary
Changeover
SIgnal

Active

Level

L/Hi-z

A/D

A/D

A/D

A/D

A/D

A/D

A/D

A/D

A/D

H/Hi-z

L

H/L

Pin

Mark

No.

16

17

18 OUT

19

20 -

21 -

22 -

23 -

24 -

25 -

26 -

27 -

28 -

29

30

-

­31 IN

32 -

33 -

34 IN

35 IN

IN/

OUT

A-

BOUT

A-

BIN

A-

BOUT

A-

BOUT

A-

BOUT

N.U. Not Used

H-A-SW

N.U. Not Used

H-A­COMP

RF-SW

N.U. Not Used

HiFi-H-SWHiFi Audio Head

N.U. Not Used

N.U. Not Used

N.U. Not Used

N.U. Not Used

N.U. Not Used

N.U. Not Used

N.U. Not Used

N.U. Not Used

N.U. Not Used

N.U. Not Used

AUDIO­SW1

N.U. Not Used

AUDIO­SW2

REC­SAF­SW

N.U. Not Used

N.U. Not Used

RESET

XC-IN Sub Clock

Signal

Name

Function

Video Head
Amp Switching
Pulse

Head Amp
Comparator
Signal

Video Head
Switching Pulse

Switching Pulse

Audio Input/
Output
Switching
Control Signal 1
(Mono)

Audio Input/
Output
Switching
Control Signal 2
(Mono)

Recording
Safety SW
Detect (With
Record tab="L"/
With out Record
tab="H")

System Reset
Signal
(Reset=”L”)

Active

Level

-

H/L

-

H/L

H/L

-

H/L

-

-

-

-

-

-

-

-

-

-

Z/L

-

Z/L

H

-

-

L

-

4-4-1

Pin
No.

Mark

IN/

OUT

36 OUT

37 -

38 IN

39 OUT

40 -

41 -

42 -

43 IN

44 IN

45 OUT

46 -

47 -

48 IN

49 -

50 IN

51 -

52 OUT

53 -

54 -

55 -

56 -

57 -

58 IN

59 OUT

60 -

A-

61

BIN

62 -

63 -

64 -

65 OUT

Signal

Name

XC­OUT

Function

Sub Clock

Vcc Vcc

X-IN

X-OUT

Main Clock
Input

Main Clock
Input

Vss Vss(GND)

N.U. Not Used

N.U. Not Used

CLKSEL

OSC

OSC

T

Clock Select
(GND)

Clock Input

IN

for letter size

Clock Output for

OU

letter size

NU Not Used

LP LP

FSC-IN
[4.43MH
z]

OSDV

4.43MHz Clock
Input

ss OSDVss

VIDEO-INVideo Signal

Input

N.U. Not Used

VIDEO­OUT

OSDV

HLF

Video Signal
Output

cc OSDVcc

LPF Connected
Terminal (Slicer)

N.U. Not Used

N.U. Not Used

N.U. Not Used

C­SYNC

8POUT­1

Composite
Synchronized
Pulse

SCART 1 8Pin
Output Control
Signal

N.U. Not Used

N.U. Not Used

A­MODE

Hi-Fi Tape
Detection Signal

N.U. Not Used

N.U. Not Used

N.U. Not Used

D-REC-HDelayed Record

Signal

Active

Level

-

-

-

-

-

-

-

L

-

-

-

-

-

-

-

-

-

-

-

-

-

-

PULSE

H/L

-

-

L

-

-

-

L

Pin

No.

Mark

IN/

OUT

66 OUT

67 IN

68 OUT

69 OUT

70 OUT

71 OUT

72

IN/

OUT

73 -

74 -

75 -

76 OUT

77 OUT

78 OUT

79 IN

80 IN

81 OUT

82 -

83 OUT

84 OUT

85 -

86 IN

Signal

Name

C­POWER

-SW

P-ON-H

DRV­DATA

DRV­STB

DRV­CLK

IIC
BUS­SCL

IIC
BUS­SDA

Function

Capstan Power
Switching Pulse

Power On
Signal at High

LED Clock
Driver IC
Control Data

LED Clock
Driver IC Chip
Select Signal

LED Clock
Driver IC
Control Clock

IIC BUS Control
Clock

IIC BUS Control
Data

N.U. Not Used

N.U. Not Used

N.U. Not Used

C­CONT

D­CONT

Capstan Motor
Control Signal

Drum Motor
Control Signal

Capstan Motor
FWD/REV

C-F/R

Control Signal
(FWD=”L”/
REV=”H”)

S-REEL

T-REEL

LM­FWD/
REV

Supply Reel
Rotation Signal

Take Up Reel
Rotation Signal

Loading Motor
Control Signal

N.U. Not Used

A­MUTE­H

FF/
REW-L

Audio Mute
Control
Signal (Mute =
“H”)

CTL Amp Gain
Switching Signal
(FF/REW=”L”)

N.U. Not Used

P­DOWN­L

Power Voltage
Down Detector
Signal

Active

Level

L/Hi-z

H

H/L

H/L

H/L

H/L

H/L

-

-

-

PWM

PWM

H/L

PULSE

PULSE

H/L/
Hi-z

-

H

L

-

L

4-4-2

Pin
No.

Mark

IN/

OUT

87 IN

88 -

89 IN

90 IN

91 -

92 -

93 -

94 OUT

95 OUT

96 -

97 -

98 -

99 -

100 -

Signal

Name

Function

Capstan Motor

C-FG

Rotation
Detection
Pulse

AMPV

ss AMPVss (GND)

Drum Motor

D-FG

Rotation
Detection Pulse

D-PG

Drum Motor
Pulse Generator

N.U. Not Used

IN

V-Ref for CTL
AMP

AMPVR
EF

CC Terminal

Playback/

CTL (-)

Record Control
Signal (-)

Playback/

CTL (+)

Record Control
Signal (+)

CTL AMP

AMPC

Connected
Terminal

CTLAMP

out

AMPV

To Monitor for
CTL AMP
Output

cc AMPVcc

A/D Converter

AVcc

Power Input/
Standard
Voltage Input

N.U. Not Used

Active

Level

PULSE

-

PULSE

PULSE

-

-

-

H/L

H/L

-

PULSE

-

-

-

Notes:

Abbreviation for Active Level:

PWM -----Pulse Wide Modulation
A/D--------Analog - Digital Converter

4-4-3

LEAD IDENTIFICATIONS

BN1L4M-T
BN1F4M-T
BA1F4M-T
KTA1266(GR)
KTC3199(Y,GR,BL)
2SC2785(J.H.F.K)
KRA103M
KRC103M
2SA1015-GR(TPE2)
KRA104M
2SD1246(S,T)

E C B

BR24C02F-W
AT24C02N-10SC
M24C02-MN6-T
CAT24WC02JI

8

1

5

4

E C B

LTV-817(B.C)-F

A

K

2SC1815-Y(TPE2)
2SC1815-GR(TPE2)
2SC3266-Y (TPE2)
KTA1281(Y)
2SC2120-Y(TPE2)
KTC3203(Y)
2SC1815-BL(TPE2)
2SA1020(Y)
2SB892(S)
KTC3205(Y)

C

E

81

100

PT-6958-FN-TP

28

1

LA71750AM-MTB
QSZAB0RMB120

80

1

15

14

51

50

31

30

FS1KM-18A
FS1KM-14A

G D S

PT204-6B-12
MID-32A22

C

E

TC4052BF(EL)
BU4052BCF-E2

16

1

34

44

9

8

MSP3407G-QG-B8
MSP3417G-QG-B8

33

1

23

11

61

80

22

12

LA72646M-A-MPB

60

1

41

20

Note:

A: Anode
K: Cathode
E: Emitter
C: Collector
B: Base
R: Reference
S: Source
G: Gate
D: Drain

40

21

4-5-1

VT-FX240EUK/VT-MX210EUK

VT-FX240EUK/VT-MX210EUK

VT-FX240EUK
VT-MX210EUK

Digital Media Division, TokaiNo. 5204ETK