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SERVICE MANUAL
DA
TA
BASIC TAPE MECHANISM : OVD-6
STEREO VIDEO CASSETTE
RECORDER
HV-FX4100
S/M Code No. 09-001-338-6N1
K
230 V AC, 50 Hz
17W
Standby at Power save mode: 3w
3.5 kg (7.7 lbs.)
380 mm (W) x 267 mm (D) x 95 mm (H)
(15 x 10 5/8 x 3 3/4 in.)
5°C to 40°C
Rotary 2 head helical scanning system
PAL colour system, 625 lines, 50 fields
Double azimuth 4 heads
VHS video cassette
UHF: 21 to 69
UHF channels between 23 and
69, 73 dBµ
240 lines (SP)
30 minutes
Frequency synthesized tuner
I
135 seconds with E-180 tape
108 seconds with E-180 tape
20 Hz-20 KHz
More than 75 dB
SPECIFICATIONS
Less than 0.01% (nominal)
PAL
SP: 23.39 mm/sec
LP: 11.69 mm/sec
NTSC (playback only)
SP: 33.35 mm/sec
LP: 16.67 mm/sec
EP: 11.12 mm/sec
PAL
SP: 5 hours with E-300 tape
LP: 10 hours with E-300 tape
NTSC (playback only)
SP: 3 hours 30 minutes with
T-210 tape
LP: 7 hours with T-210 tape
EP: 10 hours 30 minutes with
T-210 tape
1.0 Vp-p, 75 ohm, unbalanced
1.0 Vp-p, 75 ohm, unbalanced
53 dB (nominal)
SCART: ­3.8 dBs, 50 Kohm
RCA: ­3.8 dBs, 50 Kohm
SCART: ­3.8 dBs, less than 1 Kohm
RCA: ­3.8 dBs, less than 1 Kohm
3 tracks (Hi-Fi sound 2 tracks, Normal
sound 1 track)
HI-FI WOW AND FLUTTER .............
TAPE SPEED ...................................
RECORDING/PLAYBACK TIME .....
VIDEO INPUT ...................................
VIDEO OUTPUT ..............................
VIDEO S/N .......................................
AUDIO INPUT ..................................
AUDIO OUTPUT ..............................
AUDIO TRACK .................................
POWER REQUIREMENTS .................
POWER CONSUMPTION ...................
WEIGHT ..............................................
DIMENSIONS ......................................
OPERATING TEMPERATURE ...........
VIDEO RECORDING SYSTEM ..........
VIDEO SIGNAL SYSTEM ...................
VIDEO HEAD ......................................
USABLE CASSETTES ........................
CHANNEL COVERAGE ......................
RF OUTPUT ........................................
HORIZONTAL RESOLUTION ............
TIMER BACKUP .................................
TUNER SYSTEM ................................
TV SYSTEM ........................................
FAST-FORWARD TIME ......................
REWIND TIME ....................................
HI-FI FREQUENCY RESPONSE .......
HI-FI DYNAMIC RANGE .....................
Design and specifications are subject to change without
notice.
·


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TABLE OF CONTENTS
SPECIFICATIONS ..............................................................................................................................................................
TABLE OF CONTENTS .....................................................................................................................................................
SERVICING NOTICES ON CHECKING .............................................................................................................................
IMPORTANT NOTICE ........................................................................................................................................................
DISASSEMBLY INSTRUCTIONS
REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS ...........................................................................................
REMOVAL OF DECK PARTS ..........................................................................................................................................
KEY TO ABBREVIATIONS .................................................................................................................................................
SERVICE MODE LIST .......................................................................................................................................................
PREVENTIVE CHECKS AND SERVICE INTERVALS .......................................................................................................
NOTE FOR THE REPLACING OF MEMORY IC ................................................................................................................
SERVICING FIXTURES AND TOOLS ................................................................................................................................
PREPARATION FOR SERVICING .....................................................................................................................................
VCR TEST TAPE INTERCHANGEABILITY TABLE ...........................................................................................................
MECHANICAL ADJUSTMENTS
CONFIRMATION AND ADJUSTMENT ............................................................................................................................
CONFIRMATION AND ADJUSTMENT OF TAPE RUNNING MECHANISM ..................................................................
MECHANISM ADJUSTMENT PARTS LOCATION GUIDE .............................................................................................
ELECTRICAL ADJUSTMENTS
BASIC ADJUSTMENTS ...................................................................................................................................................
ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE .............................................................................................
TROUBLESHOOTING GUIDES ..........................................................................................................................................
IC DESCRIPTIONS ............................................................................................................................................................
SERVO TIMING CHART ....................................................................................................................................................
SYSTEM SWITCH MODE ...................................................................................................................................................
SEMICONDUCTOR BASE CONNECTIONS ......................................................................................................................
BLOCK DIAGRAMS
Y/C/AUDIO/HEAD AMP ...................................................................................................................................................
SYSTEM CONTROL/SERVO/TIMER ..............................................................................................................................
TUNER/HIFI/21PIN/OSD/VPS/NICAM ............................................................................................................................
OPERATION/POWER .....................................................................................................................................................
DECK SCHEMATIC DIAGRAM ...........................................................................................................................................
OPERATION SCHEMATIC DIAGRAM ...............................................................................................................................
PRINTED CIRCUIT BOARDS (OPERATION 1/2/DECK) ...................................................................................................
PRINTED CIRCUIT BOARDS (SYSCON) ..........................................................................................................................
Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM ..............................................................................................................
SYSTEM CONTROL/SERVO/TIMER SCHEMATIC DIAGRAM .........................................................................................
21PIN/OSD/VPS SCHEMATIC DIAGRAM .........................................................................................................................
TUNER/HIFI SCHEMATIC DIAGRAM ................................................................................................................................
POWER SCHEMATIC DIAGRAM .......................................................................................................................................
DISPLAY SCHEMATIC DIAGRAM .....................................................................................................................................
NICAM SCHEMATIC DIAGRAM .........................................................................................................................................
INTERCONNECTION DIAGRAM ........................................................................................................................................
WAVEFORMS ....................................................................................................................................................................
MECHANICAL EXPLODED VIEW ......................................................................................................................................
MECHANICAL REPLACEMENT PARTS LIST ...................................................................................................................
ACCESSORY REPLACEMENT PARTS LIST ....................................................................................................................
CHASSIS EXPLODED VIEW (TOP VIEW) .........................................................................................................................
CHASSIS EXPLODED VIEW (BOTTOM VIEW) .................................................................................................................
CHASSIS REPLACEMENT PARTS LIST ...........................................................................................................................
ELECTRICAL REPLACEMENT PARTS LIST ....................................................................................................................
A1-1
COVER
A1-1
A2-1
A2-1
B1-1
B2-1~B2-5
C1-1, C1-2
C2-1
C3-1, C3-2
C4-1
C5-1
C5-1
C6-1
D1-1, D1-2
D1-2, D1-3
D1-4
D2-1
D2-2
E-1~E-28
F-1, F-2
G-1
G-2
H-1
I-1
I-2
I-3
I-4
J-1
J-2
J-3
J-4~J-6
J-7
J-8
J-9
J-10
J-11
J-12
J-13
J-14
K-1
L1-1
L2-1
L2-1
M1-1
M1-2
M2-1
M3-1~M3-3


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SERVICING NOTICES ON CHECKING
1. KEEP THE NOTICES
As for the places which need special attentions, they are
indicated with the labels or seals on the cabinet, chassis
and parts. Make sure to keep the indications and notices
in the operation manual.
2. USE THE DESIGNATED PARTS
The parts in this equipment have the specific
characters of incombustibility and withstand voltage for
safety. Therefore, the part which is replaced should be
used the part which has the same character.
Especially as to the important parts for safety which is
indicated in the circuit diagram or the table of parts as
a
mark, the designated parts must be used.
3. PUT PARTS AND WIRES IN THE ORIGINAL
POSITION AFTER ASSEMBLING OR WIRING
There are parts which use the insulation material such
as a tube or tape for safety, or which are assembled in
the condition that these do not contact with the printed
board. The inside wiring is designed not to get closer to
the pyrogenic parts and high voltage parts. Therefore,
put these parts in the original positions.
PERFORM A SAFETY CHECK AFTER
SERVICING
4.
Confirm that the screws, parts and wiring which were
removed in order to service are put in the original
positions, or whether there are the portions which are
deteriorated around the serviced places serviced or not.
Check the insulation between the antenna terminal or
external metal and the AC cord plug blades. And be sure
the safety of that.
IMPORTANT NOTICE
The remote control for this model can be selected the Custom code 1 and Custom code 2.
· How to selection;
Custom code 1 : P
Custom code 2 :
Press the Power key and 1 key on the remote control
simultaneously for more than 2 seconds.
Press the Power key and 2 key on the remote control
simultaneously for more than 2 seconds.
The Custom code 1 is only available for the VCR unit but the Custom code 2.
When selected the Custom code 2 by mistake, just remove the batteries from the remote
control for the moment or select the Custom code 1 as described above.
A2-1


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DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS
AND P.C. BOARDS
1-1: TOP CABINET, FRONT CABINET AND
OPERATION 1, 2 PCB (Refer to Fig. 1-1)
1.
2.
3.
4.
5.
6.
7.
Remove the 4 screws 1.
Remove the Top Cabinet in the direction of arrow (A).
Disconnect the following connectors: (CP651 and CP652).
Unlock the 7 supports 2.
Remove the Front Cabinet in the direction of arrow (B).
Remove the 3 screws 3 and remove the Operation 1 PCB.
Remove the 4 screws 4 and remove the Operation 2 PCB.
Fig. 1-1
1
Top Cabinet
1-2: FLAP (Refer to Fig. 1-2)
1.
2.
Open Flap to 90° and flex in direction of arrow (A), at
the same time slide in direction of arrow (B).
Then lift in direction of arrow (C).
(A)
(C)
(B)
Flap
Fig. 1-2
1
1
1
(A)
2
2
2
2
Operation 1 PCB
3
3
3
(B)
2
2
2
4
4
4
4
Operation 2 PCB
Front Cabinet
1-3: DECK CHASSIS (Refer to Fig. 1-3)
Remove the 3 screws 1.
Remove the screw 2.
Disconnect the following connectors: (CP1001, CP1002,
CP1004, CP4001, CP4002 and CP4003).
Remove the Deck Chassis in the direction of arrow.
1.
2.
3.
4.
Bottom Plate
1
1
1
2
Deck Chassis
Fig. 1-3
1-4: SYSCON PCB (Refer to Fig. 1-4)
Syscon PCB
Bottom Plate
1
Remove the screw 1.
Remove the 2 screws 2.
Remove the 2 screws 3.
Remove the Syscon PCB in the direction of arrow.
1.
2.
3.
4.
Fig. 1-4
3
3
2
2
B1-1


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DISASSEMBLY INSTRUCTIONS
2. REMOVAL OF DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1)
Remove the 2 screws 1.
Slide the 2 supports 2 and remove the Top Bracket.
1.
2.
NOTE
When you install the Top Bracket, install the screw (1)
first, then install the screw (2).
1
(2)
Top Bracket
Top Bracket
Main Chassis
Main Chassis
2
1
(1)
2
Fig. 2-1
2-2:
NOTE
When you install the Tape Guide L, install as shown in the
circle of Fig. 2-3-B. (Refer to Fig. 2-3-B)
REC Lever
Tape Guide L
· The REC Lever is not installed on the Video Cassette Player.
Fig. 2-3-B
2-4: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-4)
Move the Cassette Holder Ass'y to the front side.
Push the Locker R to remove the Cassette Side R.
Remove the Cassette Side L.
1.
2.
3.
Main Chassis
Main Chassis
Cassette Side L
Cassette Side R
Locker R
Fig. 2-4
2-5: CASSETTE SIDE L/R (Refer to Fig. 2-5)
Remove the Locker Spring.
Unlock the 4 supports 1 and then remove the Cassette
Side L/R.
1.
2.
NOTE
When you install the Cassette Side L/R, be sure to move
the Locker L/R after installing.
Locker Spring
Cassette Side L
Cassette Side R
1
1
1
Locker L
Locker R
1
Fig. 2-5
· Screw Torque: 5
± 0.5kgf·cm
DECK COVER/FLAP LEVER/TAPE GUIDE R
(Refer to Fig. 2-2)
Move the Cassette Holder Ass'y to the back side.
Unlock the support 1 and remove the Deck Cover.
Remove the Polyslider Washer 2.
Remove the Flap Lever.
Unlock the 3 supports 3 and remove the Tape Guide R.
1.
2.
3.
4.
5.
Fig. 2-2
2-3: TAPE GUIDE L (Refer to Fig. 2-3-A)
Move the Cassette Holder Ass'y to the back side.
Unlock the 2 supports 1 and remove the Tape Guide L.
Remove the REC Lever. (Recorder only)
1.
2.
3.
1
Main Chassis
Tape Guide L
REC Lever
Fig. 2-3-A
· The REC Lever is not installed on the Video Cassette Player.
1
2
3
3
3
Tape Guide R
Flap Lever
Main Chassis
Deck Cover
1
B2-1