Hitachi VT-FX440E User manual

SERVICE MANUAL
VIDEO CASSETTE DECK
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
SM0410
2004 Digital Media DivisionApril
DO NOT RESELL OR DIVERT IMPROPERLY.DO NOT RESELL OR DIVERT IMPROPERLY.
VT-FX440E(UK)
VT-MX410E(UK)
VT-FX540E(UK)

CONTENTS
1CAUTIONS FOR SAFETY IN PERFORMING
REPAIR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-1 IMPORTANT SAFETY PRECAUTIONS. . . . . . . . 1-1
1-1-1Product SafetyNotice. . . . . . . . . . . . . . . . . . . . 1-1
1-1-2Precautions during Servicing . . . . . . . . . . . . . . 1-1
1-1-3Safety Checkafter Servicing. . . . . . . . . . . . . . . 1-2
1-2 STANDARD NOTES FOR SERVICING . . . . . . . . . 1-3
1-2-1Circuit Board Indications.. . . . . . . . . . . . . . . . . 1-3
1-2-2Instructions for Connectors.. . . . . . . . . . . . . . . 1-3
1-2-3Pb(Lead) FreeSolder. . . . . . . . . . . . . . . . . . . . 1-3
1-2-4Instructions for Handling Semi-conductors.. . . 1-3
2GENERAL INFORMATION.. . . . . . . . . . . . . . 2-1
2-1 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2 COMPARISON OF MODELS. . . . . . . . . . . . . . . . . 2-3
2-2-1Comparison of Features .. . . . . . . . . . . . . . . . . 2-3
2-2-2Comparison of MainControl ICs. . . . . . . . . . . . 2-4
2-3 FUNCTION INDICATOR SYMBOLS. . . . . . . . . . . 2-5
2-4 OPERATING CONTROLS AND FUNCTIONS.. . . 2-7
3MAINTENANCE AND INSPECTION.. . . . . . . 3-1
3-1 TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . 3-1
3-2 STANDARD MAINTENANCE. . . . . . . . . . . . . . . . . 3-6
3-2-1ServiceSchedule of Components. . . . . . . . . . . 3-6
3-2-2Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
4DISASSEMBLY.. . . . . . . . . . . . . . . . . . . . . . . 4-1
4-1 CABINET DISASSEMBLY INSTRUCTIONS . . . . . 4-1
4-1-1DisassemblyFlowchart. . . . . . . . . . . . . . . . . . . 4-1
4-1-2DisassemblyMethod.. . . . . . . . . . . . . . . . . . . . 4-1
4-2 DISASSEMBLY/ASSEMBLY PROCEDURES
OFDECK MECHANISM. . . . . . . . . . . . . . . . . . . . 4-4
4-3ALIGNMENTPROCEDURES OF MECHANISM. 4-13
5ADJUSTMENT.. . . . . . . . . . . . . . . . . . . . . . . 5-1
5-1 PREPARATIONFOR SERVICING. . . . . . . . . . . . . 5-1
5-1-1Howto Enter the ServiceMode. . . . . . . . . . . . . 5-1
5-2 FIXTURE AND TAPE FOR ADJUSTMENT . . . . . . 5-2
5-2-1HowToUse The FixturesAnd Tape . . . . . . . . . 5-2
5-3 ELECTRICAL ADJUSTMENT INSTRUCTIONS . . 5-3
5-3-1TestEquipment Required. . . . . . . . . . . . . . . . . 5-3
5-3-2Head Switching Position Adjustment. . . . . . . . . 5-3
5-4 MECHANICAL ALIGNMENT PROCEDURES.. . . 5-4
5-4-1ServiceInformation. . . . . . . . . . . . . . . . . . . . . . 5-4
5-4-2Tape Interchangeability Alignment. . . . . . . . . . 5-5
1-A. Preliminary/Final Checking and
Alignment of Tape Path . . . . . . . . . . . . . . . . . . . 5-6
1-B.X Value Alignment. . . . . . . . . . . . . . . . . . . . . . . 5-6
1-C.Checking/Adjustment of EnvelopeWaveform. . 5-7
1-D.Azimuth Alignment of
Audio/Control/Erase Head. . . . . . . . . . . . . . . . . 5-8
6EXPLODEDS VIEWSAND PARTSLIST. . . . 6-1
6-1EXPLODED VIEWS. . . . . . . . . . . . . . . . . . . . . . . . 6-1
6-1-1Cabinet Section . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6-1-2Deck MechanismView1 Section . . . . . . . . . . . 6-2
6-1-3Deck MechanismView2 Section . . . . . . . . . . . 6-3
6-1-4Deck MechanismView3 Section . . . . . . . . . . . 6-4
6-2REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . 6-5
6-2-1MechanicalParts List . . . . . . . . . . . . . . . . . . . . 6-5
6-2-2Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . 6-5
7APPENDIX.. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7-1 SYSTEM CONTROL TIMING CHARTS . . . . . . . . 7-1
7-2 IC PIN FUNCTIONDESCRIPTIONS. . . . . . . . . . . 7-8
7-3LEAD IDENTIFICATIONS. . . . . . . . . . . . . . . . . . 7-11
SSCHEMATIC, WIRING DIAGRAMS
S-1 SchematicDiagrams/PCB’s and Test Points . . . . . S-1
S-2 WiringDiagrams .. . . . . . . . . . . . . . . . . . . . . . . . . S-3
S-3 Main1/7 Schematic Diagram. . . . . . . . . . . . . . . . . S-4
S-4 Main2/7, SensorSchematic Diagram . . . . . . . . . . S-5
S-5 Main3/7 Schematic Diagram. . . . . . . . . . . . . . . . . S-6
S-6 Main4/7, Jack, Sub JackSchematic Diagram. . . . S-7
S-7 Main5/7 Schematic Diagram. . . . . . . . . . . . . . . . . S-8
S-8 Main6/7 SchematicDiagram( VT-FX440E(UK) ) .S-9
S-9 Main7/7 Schematic Diagram. . . . . . . . . . . . . . . . S-10
S-10AFV Schematic Diagram( VT-FX440E(UK) ). . . . S-11
S-11Waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-12
CCIRCUIT BOARD DIAGRAMS
C-1 MainPCB, SensorPCB Top View. . . . . . . . . . . . . C-1
C-2 MainPCB Bottom View. . . . . . . . . . . . . . . . . . . . . C-2
C-3 JackPCB Top / Bottom View. . . . . . . . . . . . . . . . . C-3
C-4 AFV PCB Top View/ BottomView,
Sub JackPCB Top View/ Bottom View
( VT-FX440E(UK) ). . . . . . . . . . . . . . . . . . . . . . . . . C-4
BBLOCK DIAGRAMS
B-1 Servo/System Control BlockDiagram. . . . . . . . . . B-1
B-2 Video BlockDiagram .. . . . . . . . . . . . . . . . . . . . . . B-2
B-3 Audio Block Diagram( VT-MX410E(UK) ) . . . . . . . B-3
B-4 Audio Block Diagram( VT-FX440E(UK)). . . . . . . . B-4
B-5 Hi-Fi Audio BlockDiagram( VT-FX440E(UK) ) . . . B-5
B-6 Power Supply BlockDiagram. . . . . . . . . . . . . . . . . B-6
i

1-1
1-1 IMPORTANT SAFETY PRECAUTIONS
1-1-1 Product Safety Notice
Some electrical and mechanical parts have special
safety-related characteristics which are often not evi-
dent 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 when-
ever 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 impor-
tant to implement the following precautions when a
set is being serviced.
1-1-2 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 block-
ing 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 solder-
ing.
F. Observe that the wires do not contact heat produc-
ing parts (heatsinks, oxide metal film resistors, fus-
ible 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. Be careful that foreign objects (screws, solder
droplets, etc.) do not remain inside the set.
K. Crimp type wire connector
The power transformer uses crimp type connec-
tors which connect the power cord and the primary
side of the transformer. When replacing the trans-
former, 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
connectors, first, disconnect the AC plug from the
AC outlet.
CAUTION FOR SAFETY IN PERFORMING REPAIR 1

1-2
AC Voltmeter
(High Impedance)
Exposed Accessible Part
BOne side of
Power Cord Plug Prongs
Z
Chassis or Secondary Conductor
dd'
Primary Circuit Terminals
1-1-3 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 con-
firm 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 sol-
dered terminals, and between terminals and sur-
rounding metallic parts. (See Fig. 1-1-1)
Table 1-1-1 : Ratings for selected area
Note: This table is unofficial and for reference only.
Be sure to confirm the precise values.
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 termi-
nals, 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. 1-1-2 and the following table.
AC Line Voltage Clearance Distance (d), (d’)
220 to 240 V ≥3 mm(d)
≥6 mm(d’)
Table 1-1-2: Leakage current ratings for selected areas
Note: This table is unofficial and for reference only. Be sure to confirm the precise values.
AC Line Voltage Load Z Leakage Current (i) One side of power cord plug
prongs (B) to:
220 to 240 V
2kΩ RES.
Connected in parallel i≤0.7mA AC Peak i≤2mA DC RF or Antenna terminals
50kΩ RES.
Connected in parallel i≤0.7mA AC Peak i≤2mA DC A/V Input, Output
Fig. 1-1-1
Fig. 1-1-2

1-3
1-2 STANDARD NOTES FOR SERVICING
1-2-1 Circuit Board Indications
1. The output pin of the 3 pin Regulator ICs is indi-
cated as shown.
2. For other ICs, pin 1 and every fifth pin are indi-
cated as shown.
3. The 1st pin of every male connector is indicated as
shown.
1-2-2 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.
1-2-3 Pb (Lead) Free Solder
When soldering, be sure to use the Pb free solder.
1-2-4 Instructions for Handling
Semi-conductors
Electrostatic breakdown of the semi-conductors may
occur due to a potential difference caused by electro-
static charge during unpacking or repair work.
1. Ground for Human Body
Be sure to wear a grounding band (1MΩ) that is prop-
erly grounded to remove any static electricity that may
be charged on the body.
2. Ground for Workbench
(1) Be sure to place a conductive sheet or copper
plate with proper grounding (1MΩ) on the work-
bench or other surface, where the semi-conduc-
tors are to be placed. Because the static electricity
charge on clothing will not escape through the
body grounding band, be careful to avoid contact-
ing semi-conductors with your clothing.
Top View
Out In
Bottom View
Input
5
10
Pin 1
Pin 1
FFC Cable
Connector
PCB
* Be careful to avoid a short circuit.
PCB
< Incorrect >
PCB
Grounding Band
Conductive Sheet or
Copper Plate
1MΩ
1MΩ
< Correct >

2-1
2-1 SPECIFICATIONS
[ VT-FX440E(UK) ]
[ VT-MX410E(UK) ]
Video output level : 1Vp-p
Video output impedance : 75Ωunbalanced
Audio output level : -6dBv
Video input level : 0.5 ~2.0Vp-p
Audio input level : -10dBv
Video S/N ratio
(STANDARD): 45dB
Audio S/N ratio
(STANDARD): 41dB
Power requirement : 220-240V 50Hz
Power consumption : 25 Watts (Stand by: 3.5watts)
Dimensions : W 360mm
H 92mm
D 226mm
Weight : 2.6 Kg. (approx.)
General Specifications Electrical Specifications
Other Specifications
Designs and specifications are subject to change with-
out notice.
Television system: PAL I
TV standard
Video heads Six comprising of Four-video
and Two-audio heads
Helical scan system
Tape width : 12.65mm
Tape speed
SP : 23.39mm/sec.
LP : 11.70mm/sec.
Tuner channel
IRA~IRJ
E21~E69
CATV
RF converter : Built-in UHF converter
Converter output : UHF Channel 22 to 69
(adjustable)
Timer indication : 24-hour system
Operating temperature : 5ºC ~ 40ºC
Terminals
AERIAL : Coaxial type, male
RF OUT : Coaxial type, female
AUDIO/VIDEO : 21 pin scart socket x 2
AUDIO output : RCA connector x 2
Video output level : 1Vp-p
Video output impedance : 75Ωunbalanced
Audio output level : -6dBv
Video input level : 0.5 ~2.0Vp-p
Audio input level : -10dBv
Video S/N ratio
(STANDARD): 45dB
Audio S/N ratio
(STANDARD): 41dB
Power requirement : 220-240V ~ 50Hz
Power consumption : 25 Watts (Stand by: 3.5 watts)
Dimensions : W 360mm
H 92mm
D 226mm
Weight : 2.6 Kg. (approx.)
General Specifications Electrical Specifications
Other Specifications
Designs and specifications are subject to change with-
out notice.
Television system: PAL I
TV standard
Video heads Rotary two-head
helical scan system
Tape width : 12.65mm
Tape speed
SP : 23.39mm/sec.
LP : 11.70mm/sec.
Tuner channel
IRA~IRJ
E21~E69
CATV
RF converter : Built-in UHF converter
Converter output : UHF Channel 22 to 69
(adjustable)
Timer indication : 24-hour system
Operating temperature : 5ºC ~ 40ºC
Terminals
AERIAL : Coaxial type, male
RF OUT : Coaxial type, female
AUDIO/VIDEO : 21 pin scart socket x 2
GENERAL INFORMATION 2

Overview
VT-FX540E(UK)is the model thatdeleted “VIDEO Plus+”function from VT-FX440E(UK).
With this, the [VIDEOPlus+] button on remote controlleris alsodeleted.
Specifications
TVsystem PAL I
Video head Rotating 4 heads
Recording system Rotating 2 head helical scan brightness signal FM method
VHS standard for methods to directly record color signal low frequency conversions
Audio track Hi-Fi audio track: 2 channel
Normal audio track: 1 channel
Tape VHS-type videocassette
Tape speed {SP}: 23.39 mm/s {LP}: 11.70 mm/s
Maximum record and
playback time
{SP}: 4 hours (with E-240 used)
{LP}: 8 hours (with E-240 used)
CH Indication TVChannel
01-10 TRA-IRJ, GAP
21-69 E21-E69
74-78 X.Y.Z.Z+1.Z+2
88-99, 100 S1-S20, GAP
121-141 S21-S41
Reception system Up-heterodyne
RF converter RF CONVERTER
Converter output UHF 22 - 69 ch, I: 35 ch
Timer display 24-hour system
Video output impedance 75 Ω
Video output level 1.0 V P-P
Audio output level -6 dB 1 kΩunbalance (high impedance)
Video input level 0.5-2.0 V P-P
Audio input level -10 dBV
Video S/N ratio 45 dB or more
Audio S/N ratio 41 dB or more
Hi-Fi audio
Frequency characteristic: 20-20,000 Hz
Dynamic range: 70 dB or more
Antenna input DIN (input) terminal
Antenna output DIN (output) terminal
Video input SCART JACK (AV 1, 2)
Video output SCART JACK (AV 1, 2)
Audio input SCART JACK (AV 1, 2)
Audio output SCART JACK (AV 1, 2), PIN JACK (REAR)
Power supply AC 220-240 V +/-10%, 50 Hz +/-0.5%
Power consumption 25 W (Standby: 3.5 W)
Temperature range for
operation 5 °C - 40 °C
Dimensions 360(W) mm x 92(H) mm x 226(D) mm
Weight 2.6 kg
[ VT-FX540E(UK) ]
Receiving channel
Terminal
Others
Video section
2-2

2-2 Comparison of Models
2-2-1 Comparison of Features O: YES ---: No
ITEM VT-FX440E(UK)
VT-MX410E(UK) VT-FX340E(UK) VT-MX310E(UK) VT-FX540E(UK)
Cabinet Size 360(W) x 92(H) x 226(D) mm 360(W) x 92(H) x 226(D) mm 360(W) x 92(H) x 226(D)
mm
Weight 2.6kg2.6kg2.6kg
APPEARANCE
Power Consumption 25W 20W 25W (Standby: 3.5W)
Video Format VHS VHS VHS
Y/C Separation Comb Filter Comb Filter Comb Filter
VIDEO
YNR (Luminance Noise
Reduction) Circuit OOO
A/V In/Out Terminal
(Scart) 2Scart 2 Scart 2 Scart
Audio Out Terminal (Us
Pin Rear) O[VT-FX440E(UK)] --- [VT-MX410E(UK)] O[VT-FX340E(UK)] --- [VT-MX310E(UK)] O
INPUT/
OUTPUT
RF In/Out PAL-IPAL-IPAL-I
Remote Controller VT-RM440E [VT-FX440E(UK)]
VT-RM410E [VT-MX410E(UK)] VT-RM340E [VT-FX340E(UK)] VT-RM310E [VT-MX310E(UK)] VT-RM540E
Stereo CM Skip Feature --- --- ---
Auto Clock Feature OOO
Number of Timer
Programming 8 Program/year 8 Program/year 8 Program/year
Self Diagnosis Function O (4 Modes) O (4 Modes) O (4 Modes)
Back-up Time 60s60s60s
SQPB --- --- ---
Multi Search Feature O (Index, Time Search,
Quick Find) O (Index, Time Search, Quick Find) O (Index, Time Search, Quick Find)
Index Marked Each
Recording Index Search O [VT-FX440E(UK)] --- [VT-MX410E(UK)] O[VT-FX340E(UK)] --- [VT-MX310E(UK)] O
Time Search O[VT-FX440E(UK)]
--- [VT-MX410E(UK)] O[VT-FX340E(UK)] --- [VT-MX310E(UK)] O
Quick Find O[VT-FX440E(UK)]
--- [VT-MX410E(UK)] O[VT-FX340E(UK)] --- [VT-MX310E(UK)] O
Frame-Advance O[VT-FX440E(UK)]
--- [VT-MX410E(UK)] O[VT-FX340E(UK)] --- [VT-MX310E(UK)] O
Slow-Motion O[VT-FX440E(UK)]
--- [VT-MX410E(UK)] O[VT-FX340E(UK)] --- [VT-MX310E(UK)] O
OTHER
Nicam O[VT-FX440E(UK)]
--- [VT-MX410E(UK)] O[VT-FX340E(UK)] --- [VT-MX310E(UK)] O
Search Speed SP: X5/X7
LP: X5/X11 SP: X5/X7 LP: X5/X11 SP: X5/X7 LP: X5/X11
FF/REW Time
(T-120 Tape) FF: approx. 100s, REW: approx. 100s FF: approx. 100s, REW: approx. 100s FF: approx. 100s, REW: approx. 100s
Head Composition
[VT-FX440E(UK)] /
[VT-FX340E(UK)]
DA4+Hi-Fi
SP: 2[49/49µm]
LP: 2[25/25µm]
Hi-Fi Audio: 2[28/28µm]
DA4+Hi-Fi
SP: 2[49/49µm]
LP: 2[25/25µm]
Hi-Fi Audio: 2[28/28µm]
DA4+Hi-Fi
SP: 2[49/49µm]
LP: 2[25/25µm]
Hi-Fi Audio: 2[28/28µm]
Head Composition
[VT-MX410E(UK)] /
[VT-MX310E(UK)] DA2 28/28µmDA2 28/28µm
Head Material
[VT-FX440E(UK)] /
[VT-FX340E(UK)]
SP: Ferrite
LP: Ferrite
Hi-Fi Audio: Ferrite
SP: Ferrite
LP: Ferrite
Hi-Fi Audio: Ferrite
SP: Ferrite
LP: Ferrite
Hi-Fi Audio: Ferrite
Head Material
[VT-MX410E(UK)] /
[VT-MX310E(UK)]
SP: Ferrite
LP: Ferrite SP: Ferrite LP: Ferrite
VISS O (Index Search) O (Index Search) O (Index Search)
MECHANISM
PULSE Frame by Frame Mode
[VT-FX440E(UK)]
Tracking Mode [VT-X410E(UK)]
Frame by Frame Mode
[VT-FX340E(UK)]
Tracking Mode [VT-MX310E(UK)] Frame by Frame Mode
2-3

2-4
2-2-2 Comparison of Main Control ICs : Same as on left
ITEM VT-FX440E(UK)/MX410E(UK) VT-FX340E(UK)/MX310E(UK)
IF SIGNAL PROCESS MSP3407G-QG-B8 (V3) MSP3407G-QG-B8 /
MSP3417G-QG-B8-V3 (V3)
ERROR VOLTAGE DET LTV-817(B,C)-F (IC001)
SWITCHING CD4052BCSJX / BU4052BCF-E2 /
TC4052BF(EL) (IC151)
VIDEO/AUDIO SIGNAL PROCESS/
HEAD AMP LA71750EM-MPB-E (IC301) LA71750AM-MPB (IC301)
Hi-Fi AUDIO SIGNAL PROCESS LA72648M-MPB-E (IC451) LA72648M (IC451)
MICROCONTROLLER 8BIT
SERVO/SYSTEM CONTROL M3776AMCA-AA5GP (IC501) M37762MCA-ACPGP / QSZAB0RMB168 (IC501)
MEMORY CAT24WC02JI / BR24L02F-WE2 (IC503) CAT24WC02JI / BR24C02F-W (IC503)
LED DISPLAY DRIVE PT6958-FN-TP (IC561)
VPS LC74793JM-TRM (IC640)
: Sameas onleft
ITEM VT-FX540E(UK) VT-FX440E(UK)
IF SIGNAL PROCESS MSP3417G-QG-B8 (IC1)
ERROR VOLTAGE DET LTV-817(B,C)-F (IC001)
VIDEO/AUDIO SIGNAL PROCESS/
HEAD AMP LA71750EM-MPB-E (IC301)
Hi-Fi AUDIO SIGNAL PROCESS LA72648M-MPB-E (IC451)
MICROCONTROLLER 8BIT
SERVO/SYSTEM CONTROL M3776AMCA-AB5GP (IC501) M3776AMCA-AA5GP (IC501)
MEMORY CAT24WC02JI / BR24L02F-WE2 (IC503)
LED DISPLAY DRIVE PT6958-FN-TP (IC561)
VPS LC74793JM-TRM (IC640)

2-5
2-3 FUNCTION INDICATOR SYMBOLS
Note:
The following symbols will appearon the indicator panel to indicate the current mode oroperation of the
VCR.On-screen modes willalso bemomentarily displayed on the tv screen when you pressthe operation
buttons.
Display panel
MODE INDICATOR ACTIVE
POWER ON " PWR."ON
CASSETTE "IN"
CASSETTE "OUT" " "
" "
ON
OFF
CLOCK"88:88 "ON
REC"REC " ON
REC PAUSE"REC " Blinksat 0.8Hzinterval
PLAY*"PLAY"is displayed on the indicatorpanel.
FF*"FF"is displayed on the indicatorpanel.
REW*"Fr"is displayed on the indicatorpanel.
RESIDUAL QUANTITY*Aresidual quantityvalue of tape is displayed on the indicator
panel. (in a FF/REW mode)
REMAIN*Aremain value of tape is displayed on a displaypanel by7
segment indication.
T- R E C , OT R " " ON
(T-REC OFF,T-REC incomplete
Blinks at 0.8Hz interval)
RF OUT RF out channel number is displayed on the indicator panel.
S-INH condition All modes Blinks at 0.8Hz interval
All lighting mode All characters ON
When reel and capstan mechanism is
not functioning correctly “AR” is displayed on a TV screen. (Refer to Fig. 1.)
When tape loading mechanism is not
functioning correctly “AT” is displayed on a TV screen. (Refer to Fig. 2.)
When cassette loading mechanism is
not functioning correctly “AC” is displayed on a TV screen. (Refer to Fig. 3.)
When the drum is not working properly“AD” is displayed on a TV screen. (Refer to Fig. 4.)
P-ON Power safety detection “AP” is displayed on a TV screen. (Refer to Fig. 5.)
*Not applicable to VT-FX540E(UK)

2-6
TV screen
Note:
OSD for mechanical error will be displayed for 5 sec. after the mechanical error occurs.
When reel and capstan mechanism is not functioning
correctly
When tape loading mechanism is not functioning cor-
rectly
When cassette loading mechanism is not functioning
correctly
When the drum is not working properly
P-ON Power safety detection
AR
Fig. 1
AT
Fig. 2
AC
Fig. 3
Fig. 4
AD
AP
Fig. 5

2-7
2-4 OPERATING CONTROLS AND FUNCTIONS
[ VT-FX440E(UK) ]
PROGRAM
TRACKING
247
1
35689
1. Cassette compartment
2. (F.FWD) button
3. (PLAY) button
4. (REW) button
5. (STOP/EJECT) button
6. (REC/OTR) button
7. Indicator (See below)
8. PROGRAM ( /) [TRACKING]
buttons
9. (OPERATE) button
10. PWR. (Power) indicator
11. TAPE IN indicator
12. REC indicator
13. (Timer) indicator
14. CLOCK indicator
PWR. REC
10
11
14
12
13
15. Power cord
16. AV2 (DECODER) socket
17. AV1 (TV) socket
18. AUDIO OUTPUT L/R jacks
19. RF OUT socket
20. AERIAL socket
Indicator
Rear Panel
AV2 (DECODER) AV1 (TV)
AUDIO
OUTPUT
AERIAL
RF OUT
R
L
1716
1920 18
15
Front Panel

2-8
SLOW
SPEED
PROGRAM
PAUSE/STILL
QUICK-FIND
REC/OTR
SEARCH MODE
DISPLAY
MENU COUNTER
RESET MEMORY
OPERATE EJECT
0
REW
STOP
789
6
5
4
3
2
1
AUDIO
SELECT
VIDEO Plus+ DAILY/WEEKLY
F.FWD
1
2
20
21
4
3
6
8
7
9
17
18
14
13
19
15
12
11
16
5
10
PLAY
Remote Controller
1. OPERATE button
2. NUMBER buttons
3. VIDEO Plus+ button
4. MENU button
5. DISPLAY button
6. REW/ button
7. STOP/ button
8. REC/OTR button
9. QUICK-FIND button
10. SEARCH MODE button
11. PAUSE/STILL button
12. SPEED button
13. F.FWD/ button
14. PLAY/ button
15. COUNTER RESET button
16. COUNTER MEMORY button
17. SLOW button
18. DAILY/WEEKLY button
19. PROGRAM ( /) buttons
20. EJECT button
21. AUDIO SELECT button

2-9
[ VT-MX410E(UK) ]
PROGRAM
TRACKING
247
1
35689
1. Cassette compartment
2. (F.FWD) button
3. (PLAY) button
4. (REW) button
5. (STOP/EJECT) button
6. (REC/OTR) button
7. Indicator (See below)
8. PROGRAM ( /) [TRACKING]
buttons
9. (OPERATE) button
10. PWR. (Power) indicator
11. TAPE IN indicator
12. REC indicator
13. (Timer) indicator
14. CLOCK indicator
PWR. REC
10
11
14
12
13
15. Power cord
16. AV2 (DECODER) socket
17. AV1 (TV) socket
18. RF OUT socket
19. AERIAL socket
Indicator
Rear Panel
RF OUT
AERIAL
AV2(DECODER) AV1(TV)
1716
1819
15
Front Panel

2-10
SPEED
PROGRAM
PAUSE/STILL
REC/OTR
DISPLAY
MENU COUNTER
RESET MEMORY
OPERATE EJECT
0
REW
STOP
789
6
5
4
3
2
1
VIDEO Plus+ DAILY/WEEKLY
F.FWD
1
2
17
4
3
6
8
7
15
12
11
16
13
10
9
14
5
PLAY
Remote Controller
1. OPERATE button
2. NUMBER buttons
3. VIDEO Plus+ button
4. MENU button
5. DISPLAY button
6. REW/ button
7. STOP/ button
8. REC/OTR button
9. PAUSE/STILL button
10. SPEED button
11. F.FWD/ button
12. PLAY/ button
13. COUNTER RESET button
14. COUNTER MEMORY button
15. DAILY/WEEKLY button
16. PROGRAM ( /) buttons
17. EJECT button

2-11
PROGRAM
TRACKING
247
1
35689
1. Cassette compartment
2. (F.FWD) button
3. (PLAY) button
4. (REW) button
5. (STOP/EJECT) button
6. (REC/OTR) button
7. Indicator (See below)
8. PROGRAM ( / ) [TRACKING]
buttons
9. (OPERATE) button
10. PWR. (Power) indicator
11. TAPE IN indicator
12. REC indicator
13. (Timer) indicator
14. CLOCK indicator
RECPWR.
14
12
13
10
11
15. Power cord
16. AV2 (DECODER) socket
17. AV1 (TV) socket
18. AUDIO OUTPUT L/R jacks
19. RF OUT socket
20. AERIAL socket
Indicator
Rear Panel
AV2 (DECODER) AV1 (TV)
AUDIO
OUTPUT
AERIAL
RF OUT
R
L
1716
1920 18
15
Front Panel
[ VT-FX540E(UK) ]

2-12
On Battery Replacement
Do not mix old and new batteries. (Also never mix alka-
line batteries with manganese batteries.)
CAUTION
SLOW
SPEED
PROGRAM
PAUSE/STILL
QUICK-FIND
REC/OTR
SEARCH MODE
DISPLAY
MENU COUNTER
RESET MEMORY
OPERATE EJECT
0
REW
STOP
789
6
5
4
3
2
1
AUDIO
SELECT
F.FWD
1
2
18
19
3
5
7
6
8
16
13
12
17
14
11
10
15
4
9
PLAY
Install two AA batteries
matching the polarity indi-
cated inside the battery
compartment.
To insert the batteries:
Remote Controller
1. OPERATE button
2. NUMBER buttons
3. MENU button
4. DISPLAY button
5. REW/ button
6. STOP/ button
7. REC/OTR button
8. QUICK-FIND button
9. SEARCH MODE button
10. PAUSE/STILL button
11. SPEED button
12. F.FWD/ button
13. PLAY/ button
14. COUNTER RESET button
15. COUNTER MEMORY button
16. SLOW button
17. PROGRAM ( / ) buttons
18. EJECT button
19. AUDIO SELECT button

3-1
MAINTENANCE AND INSPECTION 3
3-1 TROUBLESHOOTING
This section decribes howto service forspecific malfunctions orpoor parts.
Detect malfunction or poor parts and service asfollows:
RF INPUT
No good
OK
OK
CheckVideo signal at pin 48 of IC301.
CheckVideo signal at pin 50 of IC501.
CheckTU701 and line between
TU701 and pin 48 of IC301, and
service it if detective.
LINE INPUT (AV1)
CheckVideo signal at pin 50 of IC301.
Check A/V cable, JK101 and line
between JK101 and pin 50 of IC301, and
service it if detective.
LINE INPUT (AV2)
OK
No good
Check IC501 and line between pin
52 of IC501 and pin 56 of IC301, and
service it if detective.
Check IC501 and line between pin 52 of IC501 and
pin 56 of IC301, and service it if detective.
No good
No good
OK
Cleaning the Video Head.(See page 3-7.) Or check Cylinder Assembly and service it if detective.
CheckVideo signal at pin 56 of IC301. Check IC301, X301 and line between pin 65 of IC301
and pin 50 of IC501, and service it if detective.
Video problem 1 (No recording Video)
No good
OK
CheckVideo signal at pin 52 of IC301.
Check AV cable, JK102 and line between JK102 and
pin 52 of IC301,
and service it if detective.
No good
OK
CheckVideo signal at pin 50 of IC501.
OK
CheckVideo signal at pin 56 of IC301.
Cleaning the Video Head.(See page 3-7.)
Or check Cylinder Assembly and service it if detective.
Check IC301, X301 and
line between pin 65 of IC301
and pin 50 of IC501
, and service it if detective.
No good

3-2
OK
OK OK OK
Check signal at pin 93 and pin 96 (or pin 87, pin 90) of IC301.
OK
OK Check IC501 and line between pin 52 of IC501 and
pin 56 of IC301, and service it if detective.
Check IC301, X301 and line between pin
65 of IC301 and pin 50 of IC501, and
service it if detective.
No good
Cleaning the Video Head.(See page 3-7.) Or check
Cylinder Assembly and service it if detective.
No good
CheckVideo signal at pin 50 of IC501.
CheckVideo signal at pin 56 of IC301.
No good No good No good
Check line between pin 52 of IC501
and pin 6 of TU701, and service it if
detective.
CheckTU701 and service
it if detective.
Check line between pin 61 of IC301
and pin 19 of JK101, and service it if
detective.
Check JK101 and AV cable,
and service it if detective.
Check line between pin 63 of IC301
and pin 19 of JK102, and service it if
detective.
Check JK102 and AV cable,
and service it if detective.
CheckVideo signal at pin 6 of TU701.
CheckVideo signal at pin 19 of JK101. CheckVideo signal at pin 19 of JK102.
RF OUT LINE OUT (AV1) LINE OUT (AV2)
Video problem 2 (No playback Video)
No good

3-3
Check Audio signal at pin 5 of IC301.
Check ACE Head Assembly and service it if detective.
(RF OUTPUT/AV1) (AV2)
No good
Check Audio signal at pin 11 of IC301 or pin 80 of IC451.
Check IC451
and service
it if detective.
Check Audio signal at pin
(72, 74, 76) of IC451.
Check IC301 and IC451 ,
and service it if detective.
Check TU701, IC151
or A-OUT jack, and
service it if detective.
OK(with VT-FX440E(UK))
OK
Audio problem 2 (No playback Normal Audio)
Check Tape interchangeability
alignment. (See page 5-5.) Cleaning the Audio
Control Head.
(See page 3-7.)
No good
No good
No good
OK(with VT-MX410E(UK))
OK
Check Audio signal at pin 5 of IC301.
Check ACE Head Assembly and service it if detective.
No
good
Check Audio signal at pin 11 of IC301 or pin 80 of IC451.
Check IC451
and service
it if detective.
Check Audio signal at pin
65 and pin 67 of IC451.
Check IC301 and IC451 ,
and service it if detective.
Check IC151 or A-OUT
jack and service it if
detective.
OK(with VT-FX440E(UK))
OK
No good
No good
No good
OK(with VT-MX410E(UK))
OK
RF-INPUT
OK
Change for Audio-mode(MONO) by AUDIO-
SELECT KEY of Remote Controller.
LINE INPUT (AV1)
Check Audio signal at pin 6 or 52 of IC451.
Check Audio signal at pin 4 and 5 of CN701
or pin 4 and 50 of IC451.
LINE INPUT (AV2)
OK
OK
OK
OK
Check Audio signal at pin 13, pin 15 or pin 17 of IC301.
OK
OK
OK
CheckTape interchangeability alignment. (See page 5-5.)
Cleaning the Audio Control Head. (See page 3-7.)
No good
Check ACE Head Assembly and service it if detective.
Check SIF signal at pin 2 of CN701. Check TU701 and
service it if detective.
No good
Check AV cable, JK101 and
line between JK101 and pin
(6, 52) of IC451, and service
it if detective.
(with VT-FX440E(UK))
(with VT-MX410E(UK))
(with VT-FX440/540E(UK))
(with VT-MX410E(UK))
Check AFV PCB and
service it if detective.
No good
Check Audio signal at pin 13, pin 15 or pin 17 of IC301.
Check IC451 and IC301, and service it if detective.
Check IC451 and IC301, and service it if detective.
Audio problem 1 (No recording Normal Audio)
Check Audio signal at pin 10 or pin 56 of IC451.
No good
Check AV cable, JK102 and line between JK102 and
pin (10, 56) of IC451, and service it if detective.
No good
Check ACE Head Assembly and service it if detective.
No good
(with VT-FX440E(UK))
(with VT-MX410E(UK))
OK
Cleaning the Audio Control Head. (See page 3-7.)
CheckTape interchangeability alignment. (See page 5-5.)
No
good
No
good
OK Check Tape interchangeability
alignment. (See page 5-5.) Cleaning the Audio
Control Head.
(See page 3-7.)
OK