JVC HRXVC-1-U Service manual
SERVICE MANUAL
DVD/CD PLAYER Hi-Fi STEREO VIDEO CASETTE RECORDER
HR-XVC1U
POWER
TV
VCR
DVD
OPEN/
MARKER RETURN
DVD MENU
CLOSE
ZERO RETURN
C.RESET
DISPLAY A.TRK
SEARCH
SUB TITLE
ANGLE
MODE
SP/EP
PLAY
REPEAT
ZOOM
TITLE
MODE
A-B
TV
POWER
INPUT
TV VOL
TIMER
TV/VCR
0
PLAY
FF
REW
STOP
PAU
SE
REC
R
C
V
C
/
V
H
T
+
SKIP
SKIP
/INDEX
/INDEX
ENTER/
SET SET
SELECT
SET UP
CANCEL
MENU
T
—
V
/
H
V
C
C
R
SLOW
OSD
SKIP
ARCH
SE
A.MONITOR
VCR/DVD/TV
SPECIFICATIONS
GENERAL
Power supply:
Power consumption:
Weight:
Dimensions:
Inputs/Outputs:
Video:
Audio:
Antenna:
Hi-Fi Frequency Response:
Hi-Fi Dynamic Range:
VCR section
Video Head:
Audio Track:
Tuner:
RF Channel Output:
F .FWD/REW Time:
AC 120V 60Hz
Operation: 20W
Stand by: 3W
9.9lbs (4.5 kg)
Width : 16-15/16 inches (430 mm)
Height: 3-7/8 inches (99 mm)
Depth : 12-1/4 inches (311 mm)
In: 1Vp-p/75 ohm
Out: 1Vp-p/75 ohm
In: -8 dBm/50K ohm
Out: -8 dBm/1K ohm
UHF/VHF IN/OUT: 75 ohm coaxial
20Hz to 20,000Hz
More than 90dB
4 Rotary Heads
Hi-Fi Sound - 2 Tracks / MONO Sound - 1 Track
181 Channel Freq. Synthesized
VHF 2-13
UHF 14-69
CATV 14-36 (A)-(W)
Channel 3 or 4, Switchable
Approx. 1minutes and 48 seconds (with T-120 Cassette Tape) (at+25 C)
37-59 (AA)-(WW)
60-85 (AAA)-(ZZZ)
86-94 (86)-(94)
95-99 (A-5)-(A-1)
100-125 (100)-(125)
01 (5A)
DVD section
Signal system:
Applicable disc:
Audio characteristics:
Frequency response:
S/N Ratio:
Harmonic distortion:
Wow and flutter:
Dynamic range:
Output:
Pickup:
ACCESSORIES:
NTSC
DVD (12cm, 8cm), CD (12cm, 8cm)
DVD: 4Hz - 22KHz
CD: 4Hz - 20KHz
90dB
0.01%
Below Measurable Level
90dB
Video : (RCA) 1 Vp-p/75ohm
Audio : (RCA) -8 dBm/1Kohm
Digital Audio : 0.5Vp-p 75 ohm
CD : Wavelength: 775 - 805 nm
Maximum output power: 0.5 mW
DVD : Wavelength: 640 - 660 nm
Maximum output power: 1.0 mW
Remote control x 1
Batteries (2 x AA)
75 ohm Coaxial Cable x 1
AUDIO/VIDEO Cable x 1
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD
No.82902
January 2002
TABLE OF CONTENTS
Section Title Page Section Title Page
Important Safety Precautions
INSTRUCTIONS
DISASSEMBLY INSTRUCTIONS
1.REMOVAL OF MECHANICAL PARTS AND
P.C.BOARDS .................................................................. 1-1
1-1 TOP CABINET AND FRONT CABINET ..................1-1
1-2 FLAP .......................................................................1-1
1-3 VCR DECK ..............................................................1-1
1-4 VCR MT PCB .......................................................... 1-1
1-5 DECK CD AND MPEG MT PCB..............................1-2
1-6 POWER PCB ..........................................................1-2
2.REMOVAL OF VCR DECK PARTS.................................1-1
2-1 TOP BRACKET .......................................................1-3
2-2 CASSETTE HOLDER ASS’Y ..................................1-3
2-3 CASSETTE SIDE L/R .............................................1-3
2-4 LINK UNIT ...............................................................1-3
2-5 LINK LEVER/FLAP LEVER .....................................1-3
2-6 LOADING MOTOR/WORM .....................................1-4
2-7 TENSION ASS’Y .....................................................1-4
2-8 T BRAKE ARM/T BRAKE BAND.............................1-5
S REEL/T REEL/IDLER ARM ASS’Y/IDLER GESR ........
2-9
2-10 CASSETTE OPENER/PINCH ROLLER
BLOCK/P5 ARM ASS’Y........................................... 1-6
2-11 A/C HEAD ...............................................................1-6
2-12 FE HEAD(RECORDER ONLY) ............................... 1-6
2-13 AHC ASS’Y/CYLINDER UNIT ASS’Y......................1-6
2-14 CAPSTAN DD UNIT................................................1-7
MAIN CAM/PINCH ROLLER CAM/JOINT GEAR ............
2-15
LOADING GEAR S/T UNIT..............................................
2-16
CLUTCH ASS’Y/RING SPRING/
2-17
CLUTCH LEVER/CLUTCH GEAR ...................................
CASSETTE GUIDE POST/
2-18
INCLINED BASE S/T UNIT/P4 CAP ................................
REMOVAL AND INSTALLATION OF FLAT PACKAGE IC.......
3.
REMOVAL........................................................................1-9
INSTALLATION .............................................................. 1-10
KEY TO ABBREVIATIONS ............................................. 1-11
SERVICE MODE LIST..................................................... 1-13
WHEN REPLACING EEPROM (MEMORY) IC ...............1-14
PARENTAL CONTROL - RATING LEVEL ...................... 1-14
PREVENTIVE CHECKS AND SERVICE INTERVALS
CONFIRMATION OF HOURS USED.............................. 1-15
CLEANING...................................................................... 1-16
PECULUIAR SERVICE ................................................... 1-17
1.DVD SECTION .............................................................1-17
DISC REMOVAL METHOD AT NO POWER SUPPLY...1-17
ELECTRICAL ADJUSTMENT PAR TS
LOCATION GUIDE (WIRING CONNECTION)............... 1-18
2.VHS SECTION.............................................................. 1-19
SERVICING FIXTURES AND TOOLS ...........................1-19
MECHANISM ADJUSTMENT PARTS LOCATION GUIDE......
MECHANICAL ADJUSTMENTS
TAPE REMOVAL METHOD AT NO POWER SUPPLY .... 1-20
1.CONFIRMATION AND ADJUSTMENT .........................1-20
1-1 CONFIRMATION AND ADJUSTMENT OF
TENSION POST POSITION ................................. 1-20
1-2 CONFIRMATION OF PLAYBACK TORQUE AND
BACK TENSION TORQUE DURING PLAY BACK..1-20
1-3 CONFIRMATION OF VSR TORQUE ....................1-20
1-4 CONFIRMATION OF REEL BRAKE TORQUE .....1-21
1-5
1-7
1-7
1-8
1-8
1-9
1-19
2.CONFIRMATION AND ADJUSTMENT OF
TAPE RUNNING MECHANISM .................................... 1-21
2-1 GUIDE ROLLER ...................................................1-21
2-2 CONFIRMATION AND ADJUSTMENT OF
AUDIO/CONTROL HEAD .....................................1-22
2-3 TAPE RUNNING ADJUSTMENT ..........................1-22
ELECTRICAL ADJUSTMENTS
1.BASIC ADJUSTMENT .................................................. 1-23
1-1 SWITCHING POINT ..............................................1-23
ELECTRICAL ADJUSTMENT PAR TS LOCATION GUIDE........
IC DESCRIPTIONS .........................................................1-24
SERVO TIMING CHART ................................................. 1-27
MECHANISM TIMING CHART........................................1-28
TROUBLESHOOTING GUIDE
VCR SECTION ..........................................................................
DVD SECTION ..........................................................................
INTERCONNECTION DIAGRAM ................................................
POWER SCHEMATIC DIAGRAM................................................
MPEG SCHEMATIC DIAGRAM...................................................
SDRAM SCHEMATIC DIAGRAM ................................................
DVD SYSCON SCHEMATIC DIAGRAM......................................
VIDEO ENCORDER SCHEMATIC DIAGRAM...........................
Y/C AUDIO/CCD/HEAD AMP SCHEMATIC DIAGRAM.............
VCR SYSCON SCHEMATIC DIAGRAM....................................
TUNER/JACK SCHEMATIC DIAGRAM.....................................
REGULATOR SCHEMATIC DIAGRAM .....................................
OPERATION/DISPLAY SCHEMATIC DIAGRAM.......................
Hi-Fi/DEMODULATOR SCHEMATIC DIAGRAM .......................
DVD IN/OUT SCHEMATIC DIAGRAM.......................................
OPERATION SCHEMATIC DIAGRAM ......................................
PRINTED CIRCUIT BOARDS
POWER/OPERATION ..............................................................
MPEG
..............................................................................2-30
VCR
..............................................................................2-31
WAVEFORMS ............................................................................
DVD BLOCK DIAGRAM ............................................................
Y/C/AUDIO/CCD/HEAD AMP BLOCK DIAGRAM .....................
SYSTEM CONTROL BLOCK DIAGRAM ...................................
REGULATOR BLOCK DIAGRAM ..............................................
OPERATION/DISPLAY BLOCK DIAGRAM ...............................
HIFI/DEMODULATOR BLOCK DIAGRAM.................................
TUNER/JACK BLOCK DIAGRAM .............................................
DVD IN/OUT BLOCK DIAGRAM ...............................................
POWR BLOCK DIAGRAM .........................................................
PARTS LIST
3.1 PACKING AND ACCESSOR Y ASSEMBL Y <M1> ..... 3-1
3.2 FINAL ASSEMBL Y <M2>...........................................3-2
3.3 MECHANISM ASSEMBLY <M4>...............................3-3
3.4 ELECTRICAL PARTS LIST ....................................... 3-7
VCR MT PCB ASSEMBLY <03> ............................... 3-7
MPEG MT PCB ASSEMBLY <50> .......................... 3-11
POWER PCB ASSEMBLY <01>..............................3-13
OPERATION PCB ASSEMBLY <28> ...................... 3-14
Reference.......................................................................... 4-1
1-23
1-29
1-52
2-1
2-3
2-5
2-7
2-9
2-11
2-13
2-15
2-17
2-19
2-21
2-23
2-25
2-27
2-29
2-35
2-39
2-41
2-43
2-45
2-47
2-49
2-51
2-53
2-55
The following table lists the differing points between Models (HR-XVC1U and HR-XVC1U(C)) in this series.
ITEM
INSTRUCTION LANGUAGE ENGLISH ENGLISH, FRENCH
REGISTRATION CARD USED NOT USED
GUARANTEE CARD NOT USED USED
SERVICE STAION LIST NOT USED USED
MODEL
HR-XVC1U HR-XVC1U(C)
Important Safety Precautions
cut close to connector
Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes
of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the
following precautions when a set is being serviced.
v
Precautions during Servicing
1. Locations requiring special caution are denoted by labels and
inscriptions on the cabinet, chassis and certain parts of the
product. When performing service, be sure to read and comply with these and other cautionary notices appearing in the
operation and service manuals.
2. Parts identified by the
critical for safety.
Replace only with specified part numbers.
Note: Parts in this category also include those specified to com-
ply with X-ray emission standards for products using
cathode ray tubes and those specified for compliance
with various regulations regarding spurious radiation
emission.
3. Fuse replacement caution notice.
Caution for continued protection against fire hazard.
Replace only with same type and rated fuse(s) as specified.
4. Use specified internal wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
5. Use specified insulating materials for hazardous live parts.
Note especially:
1) Insulation Tape 3) Spacers 5) Barrier
2) PVC tubing 4) Insulation sheets for transistors
6. When replacing AC primary side components (transformers,
power cords, noise blocking capacitors, etc.) wrap ends of
wires securely about the terminals before soldering.
symbol and shaded ( ) parts are
12. Crimp type wire connector
In such cases as when replacing the power transformer in sets
where the connections between the power cord and power
transformer primary lead wires are performed using crimp type
connectors, if replacing the connectors is unavoidable, in order to prevent safety hazards, perform carefully and precisely
according to the following steps.
1) Connector part number : E03830-001
2) Required tool : Connector crimping tool of the proper type
which will not damage insulated parts.
3) Replacement procedure
(1) Remove the old connector by cutting the wires at a point
close to the connector.
Important : Do not reuse a connector (discard it).
Fig.3
(2) Strip about 15 mm of the insulation from the ends of
the wires. If the wires are stranded, twist the strands to
avoid frayed conductors.
15 mm
Fig.1
7. Observe that wires do not contact heat producing parts
(heatsinks, oxide metal film resistors, fusible resistors, etc.)
8. Check that replaced wires do not contact sharp edged or
pointed parts.
9. When a power cord has been replaced, check that 10-15 kg of
force in any direction will not loosen it.
Power cord
Fig.2
10. Also check areas surrounding repaired locations.
11. Products using cathode ray tubes (CRTs)
In regard to such products, the cathode ray tubes themselves,
the high voltage circuits, and related circuits are specified for
compliance with recognized codes pertaining to X-ray emission.
Consequently, when servicing these products, replace the cathode ray tubes and other parts with only the specified parts.
Under no circumstances attempt to modify these circuits.
Unauthorized modification can increase the high voltage value
and cause X-ray emission from the cathode ray tube.
Fig.4
(3) Align the lengths of the wires to be connected. Insert
the wires fully into the connector.
Metal sleeve
Connector
Fig.5
(4) As shown in Fig.6, use the crimping tool to crimp the
metal sleeve at the center position. Be sure to crimp fully
to the complete closure of the tool.
1.25
2.0
5.5
Fig.6
(5) Check the four points noted in Fig.7.
Not easily pulled free
Wire insulation recessed
more than 4 mm
Fig.7
Crimping tool
Crimped at approx. center
of metal sleeve
Conductors extended
1
S40888-01
v
d'
d
Chassis
Power cord,
primary wire
Safety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been
returned to original positions, Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards.
1. Insulation resistance test
Confirm the specified insulation resistance or greater between power cord plug prongs and
externally exposed parts of the set (RF terminals, antenna terminals, video and audio input
and output terminals, microphone jacks, earphone jacks, etc.). See table 1 below.
2. Dielectric strength test
Confirm specified dielectric strength or greater between power cord plug prongs and exposed
accessible parts of the set (RF terminals, antenna terminals, video and audio input and output
terminals, microphone jacks, earphone jacks, etc.). See table 1 below.
3. Clearance distance
When replacing primary circuit components, confirm specified clearance distance (d), (d’) between soldered terminals, and between terminals and surrounding metallic parts. See table 1
below.
Fig. 8
4. Leakage current test
Confirm specified or lower leakage current between earth ground/power cord plug prongs
and externally exposed accessible parts (RF terminals, antenna terminals, video and audio
input and output terminals, microphone jacks, earphone jacks, etc.).
Measuring Method : (Power ON)
Insert load Z between earth ground/power cord plug prongs and externally exposed accessible parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and
following table 2.
Externally
exposed
accessible part
Z
V
Fig. 9
ab
c
5. Grounding (Class 1 model only)
Confirm specified or lower grounding impedance between earth pin in AC inlet and externally exposed accessible parts (Video in,
Video out, Audio in, Audio out or Fixing screw etc.).
Measuring Method:
Connect milli ohm meter between earth pin in AC inlet and exposed accessible parts. See figure 10 and grounding specifications.
AC inlet
Earth pin
AC Line Voltage
100 V
100 to 240 V
110 to 130 V
110 to 130 V
200 to 240 V
Exposed accessible part
Milli ohm meter
Fig. 10
Region
Japan
USA & Canada
Europe & Australia R 10 MΩ/500 V DC
Region Load Z
Insulation Resistance (R)
≤
R 1 MΩ/500 V DC
≥≥
1 MΩ R 12 MΩ/500 V DC
≤
Table 1 Specifications for each region
Grounding Specifications
Region
USA & Canada
Europe & Australia
Dielectric Strength
AC 1 kV 1 minute
AC 1.5 kV 1 miute
AC 1 kV 1 minute
AC 3 kV 1 minute
AC 1.5 kV 1 minute
(Class 2)
(Class 1)
Grounding Impedance (Z)
≤
Z 0.1 ohm
≤
Z 0.5 ohm
Clearance Distance (d), (d')
≤
d, d' 3 mm
≤
d, d' 4 mm
≤
d, d' 3.2 mm
≤
d 4 mm
≤
d' 8 mm (Power cord)
≤
d' 6 mm (Primary wire)
a, b, cLeakage Current (i)AC Line Voltage
100 V
110 to 130 V
110 to 130 V
220 to 240 V
Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
Japan
USA & Canada
Europe & Australia
Table 2 Leakage current specifications for each region
1 kΩ
0.15 µF
1.5 kΩ
2 kΩ
50 kΩ
2
≤
i 1 mA rms Exposed accessible parts
≤
i 0.5 mA rms
≤
i 0.7 mA peak
≤
i 2 mA dc
≤
i 0.7 mA peak
≤
i 2 mA dc
Exposed accessible parts
Antenna earth terminals
Other terminals
S40888-01
IMPORTANT WARNING
CAUTION:
DVD PLA YER IS A CLASS 1 LASER PRODUCT. HOWEVER THIS PLAYER USES A VISIBLE LASER
BEAM WHICH COULD CAUSE HAZARDOUS RADIATION EXPOSURE IF DIRECTED. BE SURE TO
OPERATE THE PLAYER CORRECTLY AS INSTRUCTED.
THE FOLLOWING CAUTION LABEL IS LOCATED ON THE REAR PANEL OF THE PLAYER.
CLASS 1
(Printed on the Rear Panel)
WHEN THIS PLAYER IS PLUGGED TO THE WALL OUTLET, DO NOT PLACE YOUR EYES CLOSE
TO THE OPENING OF THE DISC TRAY AND OTHER OPENINGS TO LOOK INTO THE INSIDE OF
THIS PLAYER.
USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN
THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
DO NOT OPEN COVERS AND DO NOT REPAIR YOURSELF. REFER SERVICING TO QUALIFIED
PERSONNEL.
SERVICING NOTICES ON CHECKING
1. KEEP THE NOTICES 3. PUT PARTS AND WIRES IN THE
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.
LASER PRODUCT
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
4.
SERVICING
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.
DISASSEMBLY INSTRUCTIONS
1.
REMOVAL OF MECHANICAL PARTS
AND P.C. BOARDS
1-1:
TOP CABINET AND FRONT CABINET
(Refer to Fig. 2-1)
1.
Remove the 5 screws 1.
2.
Remove the Top Cabinet in the direction of arrow (A).
3.
Disconnect the following connector: (CP651).
4.
Unlock the 7 supports 2.
5.
Remove the Front Cabinet in the direction of arrow (B).
6.
Remove the 3 screws 3.
7.
Remove the Operation PCB in the direction of arrow (C).
Top Cabinet
1
(A)
Front Cabinet
(B)
2
2
2
2
3
3
2
2
3
CP651
2
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).
1
1
1
1
Operation PCB
Fig. 1-1
1-3: VCR DECK (Refer to Fig. 1-3)
1.
Unlock the 2 supports 1 and remove the Top Holder.
2.
Remove the 3 screws 2.
3.
Disconnect the following connectors: (CP101, CP102,
CP103 and CP3001).
4.
Remove the AC Head Cover and VCR Deck in the
direction of arrow.
1
1
VCR Deck
CP103
CP3001
1
AC Head Cover
Top Holder
1
1
CP101
CP102
1-4: VCR MT PCB (Refer to Fig. 1-4)
1.
Remove the screw 1.
2.
Remove the 7 screws 2.
3.
Disconnect the following connectors: (CP1701,
CP8001 and CP8002).
4.
Remove the VCR MT PCB in the direction of arrow.
2
CP1701
Fig. 1-3
(C)
(B)
(A)
Flap
Fig. 1-2
VCR MT PCB
CP8002
CP8001
1
2
2
2
2
2
2
Fig. 1-4
1-1
DISASSEMBLY INSTRUCTIONS
1-5: DECK CD AND MPEG MT PCB (Refer to Fig. 1-5)
1.
Disconnect the following connector: (CP503).
2.
Remove the 2 screws 1.
3.
Remove the 2 screws 2.
4.
Remove the Deck Angle 1/2 in the direction of arrow (A).
5.
Remove the 2 screws 3.
6.
Remove the Front Shield in the direction of arrow (B).
7.
Disconnect the following connectors: (CP4001 and
CP4002).
8.
Remove the 4 screws 4.
9.
Remove the Deck CD in the direction of arrow (C).
10.
Remove the 4 screws 5.
11.
Remove the MPEG Shield in the direction of arrow (D).
12.
Remove the MPEG MT PCB in the direction of arrow (E).
4
4
Deck CD
(C)
5
5
4
4
5
5
MPEG Shield
1-6: POWER PCB (Refer to Fig. 1-6)
1.2.Remove the 3 screws 1.
Remove the Power PCB in the direction of arrow.
1
1
1
Power PCB
Bottom Plate
Fig. 1-6
(D)
MPEG MT PCB
CP4001
CP4002
2
1
(B)
3
3
(E)
1
Deck Angle 1
(A)
2
Deck Angle 2Front Shield
CP503
Fig. 1-5
1-2
DISASSEMBLY INSTRUCTIONS
2. REMOVAL OF VCR DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1)
Extend the 2 supports 1.
1.
Slide the 2 supports 2 and remove the Top Bracket.
2.
NOTE
After the installation of the Top Bracket, bend the support
1.
1 so that the Top Bracket is fixed.
Top Bracket
1
Top Bracket
2
Main Chassis
2
Main Chassis
2-2: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-2)
1.
Move the Cassette Holder Ass'y to the front side.
2.
Push the Locker R to remove the Cassette Side R.
3.
Remove the Cassette Side L.
Cassette Side R
Main Chassis
1
Locker R
Fig. 2-1
NOTE
In case of the Locker R installation, check if the two
1.
positions of Fig. 2-3-B are correctly locked.
When you install the Cassette Side R, be sure to move
2.
the Locker R after installing.
Locker R
Check if these
Cassette Side R
positions are locked.
2-4: LINK UNIT (Refer to Fig. 2-4)
1.
Set the Link Unit to the Eject position.
2.
Unlock the support 1.
3.
Remove the (A) side of the Link Unit first, then remove
the (B) side.
Main Chassis
Link Unit
Fig. 2-3-B
Link Unit
Cassette Side L
Main Chassis
2-3: CASSETTE SIDE L/R (Refer to Fig. 2-3-A)
1.
Remove the Locker Spring.
2.
Unlock the 4 supports 1 and then remove the Cassette
Side L/R.
3.
Unlock the support 2 and then remove the Locker R.
Locker Spring
1
1
2
Cassette Side R
Cassette Holder
Locker R
1
1
Cassette Side L
Fig. 2-2
(A)
(B)
Link Unit
Main Chassis
2-5: LINK LEVER/FLAP LEVER (Refer to Fig. 2-5)
1.
Extend the support 1.
2.
Remove the Link Lever.
3.
Remove the Flap Lever.
1
Flap Lever
Link Lever
Fig. 2-4
Fig. 2-5
Fig. 2-3-A
1-3
DISASSEMBLY INSTRUCTIONS
2-6: LOADING MOTOR/WORM (Refer to Fig. 2-6-A)
1.
Remove the screw 1.
2.
Remove the Loading Motor.
3.
Remove the Worm.
Loading Motor
Worm
Main Chassis
• Screw Torque: 3 ± 0.5kgf•cm
1
Fig. 2-6-A
NOTE
1.2.In case of the Worm installation, check if the value of the
Fig. 2-6-B is correct.
In case of the Loading Motor installation, hook the wire
on the Cassette Opener as shown Fig. 2-6-C.
19.2 ± 0.1mm
Safety surface for pressing
of the insert.
Fig. 2-6-B
T ension Arm Ass’y
Fig. 2-7-A
1
Tension Connect
Tension Spring
2
4
1
3
Tension Holder
Tension Band
T ension Arm Ass’y
Fig. 2-7-B
NOTE
1.
In case of the Tension Band installation, note the direction of the installation. (Refer to Fig. 2-7-C)
2.
In case of the Tension Band installation, install correctly
as Fig. 2-7-D.
3.
In case of the Tension Connect installation, install as the
circled section of Fig. 2-7-E.
Loading Motor
Cassette Opener
Fig. 2-6-C
2-7: TENSION ASS’Y (Refer to Fig. 2-7-B)
1.
Turn the Pinch Roller Cam clockwise so that the Tension
Holder hook is set to the position of Fig. 2-7-A to move
the Tension Arm Ass’y.
2.
Remove the Tension Spring.
3.
Unlock the 2 supports 1 and remove the Tension Band.
4.
Unlock the support 2 and remove the Tension Arm Ass’y.
5.
Unlock the support 3 and remove the Tension Connect.
6.
Float the hook 4 and turn it clockwise then remove the
Tension Holder.
1-4
Tension Connect
[OK]
[NG]
Tension Connect
Tension Connect
Tension Connect
Main Chassis
Tension Band
Fig. 2-7-C
Tension Band
Tension Band
Fig. 2-7-D
Fig. 2-7-E
DISASSEMBLY INSTRUCTIONS
2-8: T BRAKE ARM/T BRAKE BAND (Refer to Fig. 2-8-A)
Remove the T Brake Spring.
1.
Turn the T Brake Arm clockwise and bend the hook
2.
section to remove it.
Unlock the 2 supports 1 and remove the T Brake Band.
3.
T Brake Band
Hook section
1
1
T Brake Arm
T Brake Spring
Idler Gear
(A)
Idler Arm Ass’y
(B)
S Reel
T Reel
1
(A)
1
Fig. 2-8-A
NOTE
1. In case of the T Brake Band installation, install correctly
as Fig. 2-8-B.
[OK]
T Brake Band
[NG]
T Brake Band
T Brake Arm
T Brake Arm
Fig. 2-8-B
2-9: S REEL/T REEL/IDLER ARM ASS’Y/IDLER GEAR
(Refer to Fig. 2-9-A)
1.
Remove the S Reel and T Reel.
2.
Remove the 2 Polyslider Washers 1.
3.
Remove the Idler Arm Ass’y and Idler Gear.
NOTE
1.
Take care not to damage the gears of the S Reel and T
Reel.
2.
The Polyslider Washer may be remained on the back of
the reel.
3.
Take care not to damage the shaft.
4.
Do not touch the section “A” of S Reel and T Reel. (Use
gloves.) (Refer to Fig. 2-9-A) Do not adhere the stains
on it.
5.
When you install the reel, clean the shaft and grease it
(FG-84M). (If you do not grease, noise may be heard in
FF/REW mode.)
6.
After installing the reel, adjust the height of the reel.
(Refer to MECHANICAL ADJUSTMENT)
Fig. 2-9-A
NOTE
1.2.In case of the S Reel and T Reel installation, check if the
correct parts are installed. (Refer to Fig. 2-9-B)
In case of the Idler Arm Ass’y installation, install correctly
as Fig. 2-9-C. And also set it so that the section “B” of
Fig. 2-9-A is placed under the Main Chassis tab.
Big Hole
(S Reel)
Small Hole
(T Reel)
Fig. 2-9-B
[OK]
Clutch Gear
Idler Arm Ass’y
[NG]
Idler Arm Ass’y
Clutch Gear
Fig. 2-9-C
1-5
DISASSEMBLY INSTRUCTIONS
2-10: CASSETTE OPENER/PINCH ROLLER BLOCK/P5
ARM ASS’Y (Refer to Fig. 2-10-A)
1.2.Unlock the support 1 and remove the Cassette Opener.
Remove the Pinch Roller Block and P5 Arm Ass’y.
1
Cassette Opener
Pinch Roller Block
P5 Arm Ass’y
Main Chassis
Fig. 2-10-A
NOTE
1.2.Do not touch the Pinch Roller. (Use gloves.)
In case of the Pinch Roller Block and the Pinch Roller
Cam installation, install correctly as Fig. 2-10-B.
Pinch Roller Block
P5 Arm Ass’y
Can be seen the hole of the
Main Cam.
Can be seen the hole of
the Pinch Roller Cam.
Fig. 2-10-B
2-11: A/C HEAD (Refer to Fig. 2-11-A)
1.
Remove the screw 1.
2.
Remove the A/C Head Base.
3.
Remove the 3 screws 2.
4.
Remove the A/C Head and A/C Head Spring.
NOTE
1.
Do not touch the A/C Head. (Use gloves.)
2.
When you install the A/C Head Spring, install as shown in
Fig. 2-11-B.
3.
When you install the A/C Head, tighten the screw (1) first,
then tighten the screw (2), finally tighten the screw (3).
(3)
(1)
2
2
(2)
2
A/C Head
Spring Position
Fig. 2-11-B
2-12: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-12)
1.2.Remove the screw 1.
Remove the FE Head.
1
FE Head
• Screw Torque: 5 ± 0.5kgf•cm
• The FE Head is not installed on the Video Cassette Player.
Fig. 2-12
2-13: AHC ASS’Y/CYLINDER UNIT ASS’Y
(Refer to Fig. 2-13)
1.
Disconnect the following connector:
(CD2001)
2.
Remove the 3 screws 1.
3.
Remove the Cylinder Unit Ass’y.
NOTE
1. When you install the Cylinder Unit Ass’y, tighten the
screws from (1) to (3) in order while pulling the Ass’y
toward the left front direction.
CD2001
Cylinder Unit Ass’y
• Screw Torque: 5 ± 0.5kgf•cm (Screw 1)
1-6
A/C Head Spring
1
A/C Head Base
Fig. 2-11-A
• Screw Torque: 3 ± 0.5kgf•cm
(2)
(1)
1
(3)
1
1
Fig. 2-13
DISASSEMBLY INSTRUCTIONS
2-14: CAPSTAN DD UNIT (Refer to Fig. 2-14-A)
1.
Remove the Capstan Belt.
2.
Remove the 3 screws 1.
3.
Remove the Capstan DD Unit.
Capstan Belt
Capstan DD Unit
1
1
1
• Screw Torque: 4 ± 0.5kgf•cm
Fig. 2-14-A
NOTE
1. In case of the Capstan DD Unit installation, apply the
silicon bond (TSE3843-W) on the position Fig. 2-14-B
correctly. (If no silicon bond applied, abnormal noise will
be heard on the deck operation.)
(Refer to Fig. 2-14-B, C)
Applied position of
silicon bond
2-15: MAIN CAM/PINCH ROLLER CAM/JOINT GEAR
(Refer to Fig. 2-15-A)
1.2.Remove the E-Ring 1, then remove the Main Cam.
Remove the E-Ring 2, then remove the Pinch Roller
Cam and Joint Gear.
1
Main Cam
2
Pinch Roller Cam
Joint Gear
Fig. 2-15-A
NOTE
1. In case of the Pinch Roller Cam and Main Cam installation, install them as the circled section of Fig. 2-15-B so
that the each markers are met. (Refer to Fig. 2-15-B)
And also can be seen the Main Chassis hole through the
Main Cam maker hole.
Pinch Roller Cam
Marker
Main Cam
Be careful not to apply the silicon
bond to the Pinch Roller.
Capstan DD Unit
Silicon Bond
Main Chassis
Fig. 2-14-B
Fig. 2-14-C
Fig. 2-15-B
2-16: LOADING GEAR S/T UNIT (Refer to Fig. 2-16-A)
1.2.Remove the E-Ring 1 and remove the Main Loading
Gear.
Remove the Main Rod, Tension Lever, Loading Arm S
Unit and Loading Arm T Unit.
1
Main Rod
Tension Lever
Main Loading Gear
Loading Arm T Unit
Loading Arm S Unit
Fig. 2-16-A
1-7
DISASSEMBLY INSTRUCTIONS
NOTE
1. When you install the Loading Arm S Unit, Loading Arm T
Unit and Main Loading Gear, align each marker. (Refer
to Fig. 2-16-B)
Marker
Main Loading Gear
Marker
Loading Arm T Unit Loading Arm S Unit
Fig. 2-16-B
2-17: CLUTCH ASS’Y/RING SPRING/CLUTCH LEVER/
CLUTCH GEAR (Refer to Fig. 2-17-A)
1.
Remove the Polyslider Washer 1.
2.
Remove the Clutch Ass’y and Ring Spring.
3.
Remove the Clutch Lever.
4.
Remove the Coupling Gear, Coupling Spring and Clutch
Gear.
1
Clutch Ass’y
Ring Spring
2-18: CASSETTE GUIDE POST/INCLINED BASE S/T
UNIT/P4 CAP (Refer to Fig. 2-18-A)
1.
Remove the P4 Cap.
2.
Unlock the support 1 and remove the Cassette Guide
Post.
3.
Remove the Inclined Base S Unit and Inclined Base T
Unit.
1
Inclined Base S
Unit Inclined Base T
Cassette Guide Post
Unit
P4 Cap
Fig. 2-18-A
NOTE
1.
Do not touch the roller of Guide Roller.
2.
In case of the P4 Cap installation, install it with parallel
for “A” and “B” of Fig. 2-18-B.
3.
In case of the Cassette Guide Post installation, install
correctly as the circled section of Fig. 2-18-C.
Coupling Gear
Coupling Spring
Clutch Gear
Clutch Lever
Fig. 2-17-A
NOTE
1. In case of the Clutch Ass’y installation, install it with
inserting the spring of the Clutch Ass’y into the dent of the
Coupling Gear. (Refer to Fig. 2-17-B)
Clutch Ass’y
Coupling Gear
Fig. 2-17-B
“A”“B”
P4 Cap
[OK]
Cassette Guide Post
[NG]
Cassette Guide Post
Cassette Opener
Fig. 2-18-B
Fig. 2-18-C
1-8
DISASSEMBLY INSTRUCTIONS
3. REMOVAL AND INSTALLATION OF FLAT
PACKAGE IC
REMOVAL
1. Put the Masking Tape (cotton tape) around the Flat
Package IC to protect other parts from any damage.
(Refer to Fig. 4-1.)
NOTE
Masking is carried out on all the parts located within
10 mm distance from IC leads.
Masking T ape
(Cotton Tape)
2. Heat the IC leads using a blower type IC desoldering
machine. (Refer to Fig. 4-2.)
NOTE
Do not add the rotating and the back and forth directions force on the IC, until IC can move back and forth
easily after desoldering the IC leads completely.
IC
Fig. 4-1
Blower type IC
desoldering machine
3. When IC starts moving back and forth easily after
desoldering completely, pickup the corner of the IC using
a tweezers and remove the IC by moving with the IC
desoldering machine. (Refer to Fig. 4-3.)
NOTE
Some ICs on the PCB are affixed with glue, so be
careful not to break or damage the foil of each IC
leads or solder lands under the IC when removing it.
Blower type IC
desoldering machine
Tweezers
IC
4.5.Peel off the Masking Tape.
Absorb the solder left on the pattern using the Braided
Shield Wire. (Refer to Fig. 4-4.)
NOTE
Do not move the Braided Shield Wire in the vertical
direction towards the IC pattern.
Fig. 43
Braided Shield Wire
Soldering Iron
IC
Fig. 4-2
IC pattern
Fig. 4-4
1-9
DISASSEMBLY INSTRUCTIONS
INSTALLATION
1. Take care of the polarity of new IC and then install the
new IC fitting on the printed circuit pattern. Then solder
each lead on the diagonal positions of IC temporarily.
(Refer to Fig. 4-5.)
Soldering Iron
Solder temporarily Solder temporarily
Fig. 4-5
2. Supply the solder from the upper position of IC leads
sliding to the lower position of the IC leads.
(Refer to Fig. 4-6.)
4. When bridge-soldering between terminals and/or the
soldering amount are not enough, resolder using a Thintip Soldering Iron. (Refer to Fig. 4-8.)
IC
Thin-tip Soldering Iron
Fig. 4-8
5. Finally, confirm the soldering status on four sides of the
IC using a magnifying glass.
Confirm that no abnormality is found on the soldering
position and installation position of the parts around the
IC. If some abnormality is found, correct by resoldering.
NOTE
When the IC leads are bent during soldering and/or
repairing, do not repair the bending of leads. If the
bending of leads are repaired, the pattern may be
damaged. So, be always sure to replace the IC in this
case.
Solder
IC
Supply soldering
from upper position
to lower position
Soldering Iron
Fig. 4-6
3. Absorb the solder left on the lead using the Braided
Shield Wire. (Refer to Fig. 4-7.)
NOTE
Do not absorb the solder to excess.
Soldering Iron
IC
Braided Shield Wire
1-10
Fig. 4-7
A
A/C
ACC
AE
AFC
AFT
AFT DET
AGC
AMP
ANT
A.PB
APC
ASS’Y
AT
AUTO
A/V
B
BGP
BOT
BPF
BRAKE SOL
BUFF
B/W
C
C
CASE
CAP
CARR
CH
CLK
CLOCK (SY-SE)
COMB
CONV
CPM
CTL
CYL
CYL-M
CYL SENS
D
DATA (SY-CE)
dB
DC
DD Unit
DEMOD
DET
DEV
E
E
EF
EMPH
ENC
ENV
EOT
EQ
EXT
F
F
FBC
FE
FF
FG
FL SW
FM
FSC
FWD
G
GEN
GND
H
H.P.F
KEY TO ABBREVIATIONS
:
Audio/Control
:
Automatic Color Control
:
Audio Erase
:
Automatic Frequency Control
:
Automatic Fine Tuning
:
Automatic Fine Tuning Detect
:
Automatic Gain Control
:
Amplifier
:
Antenna
:
Audio Playback
:
Automatic Phase Control
:
Assembly
:
All Time
:
Automatic
:
Audio/Video
:
Burst Gate Pulse
:
Beginning of Tape
:
Bandpass Filter
:
Brake Solenoid
:
Buffer
:
Black and White
:
Capacitance, Collector
:
Cassette
:
Capstan
:
Carrier
:
Channel
:
Clock
:
Clock (Syscon to Servo)
:
Combination, Comb Filter
:
Converter
:
Capstan Motor
:
Control
:
Cylinder
:
Cylinder-Motor
:
Cylinder-Sensor
:
Data (Syscon to Servo)
:
Decibel
:
Direct Current
:
Direct Drive Motor Unit
:
Demodulator
:
Detector
:
Deviation
:
Emitter
:
Emitter Follower
:
Emphasis
:
Encoder
:
Envelope
:
End of Tape
:
Equalizer
:
External
:
Fuse
:
Feed Back Clamp
:
Full Erase
:
Fast Forward, Flipflop
:
Frequency Generator
:
Front Loading Switch
:
Frequency Modulation
:
Frequency Sub Carrier
:
Forward
:
Generator
:
Ground
:
High Pass Filter
H.SW
Hz
I
IC
IF
IND
INV
K
KIL
L
L
LED
LIMIT AMP
LM, LDM
LP
L.P.F
LUMI.
M
M
MAX
MINI
MIX
MM
MOD
MPX
MS SW
N
NC
NR
O
OSC
OPE
P
PB
PB CTL
PB-C
PB-Y
PCB
P. CON
PD
PG
P-P
R
R
REC
REC-C
REC-Y
REEL BRK
REEL S
REF
REG
REW
REV, RVS
RF
RMC
RY
S
S. CLK
S. COM
S. DATA
SEG
SEL
SENS
SER
SI
SIF
SO
SOL
SP
STB
SW
:
Head Switch
:
Hertz
:
Integrated Circuit
:
Intermediate Frequency
:
Indicator
:
Inverter
:
Killer
:
Left
:
Light Emitting Diode
:
Limiter Amplifier
:
Loading Motor
:
Long Play
:
Low Pass Filter
:
Luminance
:
Motor
:
Maximum
:
Minimum
:
Mixer, mixing
:
Monostable Multivibrator
:
Modulator, Modulation
:
Multiplexer, Multiplex
:
Mecha State Switch
:
Non Connection
:
Noise Reduction
:
Oscillator
:
Operation
:
Playback
:
Playback Control
:
Playback-Chrominance
:
Playback-Luminance
:
Printed Circuit Board
:
Power Control
:
Phase Detector
:
Pulse Generator
:
Peak-to Peak
:
Right
:
Recording
:
Recording-Chrominance
:
Recording-Luminance
:
Reel Brake
:
Reel Sensor
:
Reference
:
Regulated, Regulator
:
Rewind
:
Reverse
:
Radio Frequency
:
Remote Control
:
Relay
:
Serial Clock
:
Sensor Common
:
Serial Data
:
Segment
:
Select, Selector
:
Sensor
:
Search Mode
:
Serial Input
:
Sound Intermediate Frequency
:
Serial Output
:
Solenoid
:
Standard Play
:
Serial Strobe
:
Switch
1-11
S
SYNC
SYNC SEP
T
TR
TRAC
TRICK PB
TP
U
UNREG
V
V
VCO
VIF
VP
V.PB
VR
V.REC
VSF
VSR
VSS
V-SYNC
VT
X
X’TAL
Y
Y/C
KEY TO ABBREVIATIONS
:
Synchronization
:
Sync Separator, Separation
:
Transistor
:
Tracking
:
Trick Playback
:
Test Point
:
Unregulated
:
Volt
:
Voltage Controlled Oscillator
:
Video Intermediate Frequency
:
Vertical Pulse, Voltage Display
:
Video Playback
:
Variable Resistor
:
Video Recording
:
Visual Search Fast Forward
:
Visual Search Rewind
:
Voltage Super Source
:
Vertical-Synchronization
:
Voltage Tuning
:
Crystal
:
Luminance/Chrominance
1-12
SERVICE MODE LIST
This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter to the SERVICE MODE function, press and hold both buttons simultaneously on the main unit or on the main unit and on
the remote control for more than a standard time (second).
Set Key Operations
CH UP
CH UP STOP 2
CH UP PLAY 2
Set Key
REC 5 2
Set Key
FF 2
Standard Time
(seconds)
Standard Time
(seconds)
PLAY/REC total hours are displayed on the screen.
Refer to the “PREVENTIVE CHECKS AND SERVICE INTERVALS”
(CONFIRMATION OF HOURS USED).
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the “NOTE FOR THE REPLACING OF MEMORY IC”.
Adjust the SWITHCHING POINT automatically.
Refer to the “ELECTRICAL ADJUSTMENT” (SWITHCHING POINT).
Initialization of the factory on VCR.
NOTE: Do not use this for the normal servicing.
If you set a factory initialization, the memories are reset such as
the clock setting, the channel setting, and PLAY/REC total hours.
OperationsRemocon Key
Initialization of the factory on DVD.
NOTE: The function will only work without the setting of DVD disc at DVD
mode.
Do not use this for the normal servicing.
REC 6 2
STOP 1 3
STOP 7 3
Method Operations
Press the ATR button on the
remote control for more than
2 seconds during PLAY.
Make the short circuit
between the test point of
SERVICE and the GND.
Adjusting of the Tracking to the center position.
Refer to the “MECHANICAL ADJUSTMENT” (GUIDE ROLLER) and “ELECTRICAL
ADJUSTMENT” (SWITHCHING POINT).
The BOT, EOT, and the Reel Sensor do not work and the VCR deck can be operated
without a cassette tape.
Refer to the “PREPARATION FOR SERVICING”
DVD Write mode.
Refer to the “UP-DATE FOR THE FIRMWARE”.
NOTE: The function will only work at the DVD stop mode.
Do not use this for the normal servicing.
Check for the firmware version.
Refer to the “CHECK FOR THE FIRMWARE VERSION”.
NOTE: The function will only work at the DVD stop mode.
Do not use this for the normal servicing.
Releasing of PARENTAL LOCK.
Refer to the “PARENTAL CONTROL - RATING LEVEL”.
NOTE:
The function will only work without the setting of DVD disc at DVD
mode.
1-13
WHEN REPLACING EEPROM (MEMORY) IC
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to
ensure correct data settings while making reference to TABLE 1.
NOTE: No need setting for after INI 2D.
INI+0+1+2+3+4+5+6+7+8+9+A+B+C+D+E+F
00
0A A0 CA 10 64 64 4A 86 0B 2F 86 2F 0A 08 0A 0F
10 AF 97 95 8A 40 55 31 04 24 A5 9F 3A 00 10 BF 00
20
29 01 15 77 61 31 29 04 00 00 00 00 A2 B0 --- ---
Tabl e 1
1.
Connect the set to TV Monitor.
2.
Turn on the POWER.
3.
Press both CH UP button on the set and the FF button on the set for more than 2 seconds.
ADDRESS and DATA will appear on TV Monitor as Fig 1.
ADDRESS DATA
INIT 00 C2
Y/REC 0000
PLA
Fig. 1
ADDRESS is now selected and should “blink”. Using the SET + or - button on the remote, step through the ADDRESS until
4.
required ADDRESS to be changed is reached.
Press ENTER to select DATA. When DATA is selected, it will “blink”.
5.
Again, step through the DATA using SET + or - button until required DATA value has been selected.
6.
Pressing ENTER will take you back to ADDRESS for further selection if necessary.
7.
Repeat steps 4 to 7 until all data has been checked.
8.
When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
9.
The unit will now have the correct DATA for the new MEMORY IC.
PARENTAL CONTROL - RATING LEVEL
4 DIGIT PASSWORD CANCELLATION
If the stored 4 digit password in the Rating Level menu needs to be cancelled, please follow the steps below.
Ensure the DVD Set is connected to the TV.
1.
Turn Unit ON.
2.
Confirm that no sisc on the disc tray.
3.
Press and hold the '7' key on the remote control unit.
4.
Simultaneously press and hold the 'STOP' key on the front panel.
5.
Hold both keys for more than 3 seconds.
6.
The On Screen Display message 'INITIALIZED' will appear.
7.
The 4 digit password has now been cleared.
8.
NB:
The above procedure will reset ALL of the player's settings to the default factory state.
1-14
PREVENTIVE CHECKS AND SERVICE INTERVALS
The following standard table depends on environmental conditions and usage.
Parts replacing time does not mean the life span for individual parts.
Also, long term storage or misuse may cause transformation and aging of rubber parts.
The following list means standard hours, so the checking hours depends on the conditions.
Time
Parts Name
Audio Control Head
Full Erase Head
(Recorder only)
Capstan Belt
Pinch Roller
Capstan DD Unit
Loading Motor
Tension Band
T Brake Band
Clutch Ass’y
Idler Arm Ass’y
Capstan Shaft
Tape Running
Guide Post
Cylinder Unit
: Clean
: Check it and if necessary, replace it.
500
hours
1,000
hours
1,500
hours
2,000
hours
3,000
hours
Notes
Clean those parts in
contact with the tape.
Clean the rubber, and parts
which the rubber touches.
Replace when rolling
becomes abnormal.
Clean the Head
CONFIRMATION OF HOURS USED
PLAY/REC total hours can be checked on the screen.
Total hours are displayed in 16 system of notation.
NOTE: If you set a factory initialization, the total hours is reset to “0”.
1.
Connect the set to TV Monitor.
2.
Turn on the POWER.
3.
Press both CH UP button on the set and the FF button on the set for more than 2 seconds.
4.
After the confirmation of using hours, turn off the power.
INIT 00 C2
PLAY/REC 0000
Initial setting content of MEMORY IC.
PLAY/REC total hours.
= (16 x 16 x 16 x thousands digit value)
+ (16 x 16 x hundreds digit value)
+ (16 x tens digit value)
+ (ones digit value)
1-15
PREVENTIVE CHECKS AND SERVICE INTER VALS
CLEANING
NOTE
After cleaning the heads with isopropyl alcohol, do not
run a tape until the heads dry completely. If the heads are
not completely dry and alcohol gets on the tape, damage
may occur.
1. AUDIO CONTROL HEAD
Clean the Audio Control Head with the cotton stick
soaked by alcohol. Clean the full erase head in the same
manner. (Refer to the figure below.)
2. TAPE RUNNING SYSTEM
When cleaning the tape transport system, use the gauze
moistened with isopropyl alcohol.
3. CYLINDER
Wrap a piece of chamois around your finger. Dip it in
isopropyl alcohol. Hold it to the cylinder head softly.
Turn the cylinder head counterclockwise to clean it (in the
direction of the arrow). (Refer to the figure below.)
NOTE
Do not exert force against the cylinder head. Do not move
the chamois upward or downward on the head.
Use the chamois one by one.
Audio Control Head
Cylinder Head
1-16
PECULUIAR SER VICE
1. DVD SECTION
DISC REMOVAL METHOD AT NO POWER SUPPLY
1. Remove the Top Cabinet and Front Cabinet.
(Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.)
2. Rotate the white gear of Deck CD section in the direction of
the arrow by hand, remove the disc from Deck CD.
(Refer to Fig. 3-1)
Gear (White)
Deck CD
Fig. 3-1
1-17
ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION)
CP502
CP503
AC IN
POWER PCB
TU301
TP3002
TP101
J8003
TP8001
J8004
J8001
J8008
J8005
VCR MT PCB
J8006
CP101
J8009
C
D
1
0
2
A/C HEAD
J8007
TP3001
OS8001
V651
CP1701
CP8001
CP8002
CP651
CD651
CD502
CD8501
CD503
CD8002
DECK CD
CP8502
CD4001
CD4002
CP681
OPERATION PCB
CP4001
CP4002
MPEG PCB
1-18
2. VHS SECTION
SERVICING FIXTURES AND TOOLS
PECULUIAR SER VICE
VHS Alignment Tape
MHP & MHP-L
Torque Tape Short Jumper
MECHANISM ADJUSTMENT PARTS LOCATION GUIDE
Torque Gauge
PUJ48075-2
Roller Driver
PTU94002-2
X-JG153 X Value Adjustment
Screwdriver
4
5
6
3
2
1
8910
1. Tension Connect
2. Tension Arm
3. Guide Roller
4. Audio/Control Head
5. X value adjustment driver hole
6.
P4 Post
7.
T Brake Spring
8.
T Reel
9.
S Reel
10.
Adjusting section for the Tension Ar m position
7
1-19
MECHANICAL ADJUSTMENTS
TAPE REMOVAL METHOD AT
NO POWER SUPPLY
Remove the Top Cabinet, Front Cabinet, DVD Block, Power
1.
PCB and Center Angle and the Fig. A below can be seen.
(Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.)
Remove the screw 1 of the VCR Deck and remove the
2.
Loading Motor. (Refer to Fig. B)
Rotate the Pinch Roller Cam in the direction of the arrow by
3.
hand to slacken the Video Tape.
Rotate the Clutch Ass'y either of the derections to wind the
4.
Video Tape in the Cassette Case.
Repeat the above step 3~4. Then take out the Video Cassette
5.
from the Deck Chassis. Be careful not to
scratch on the tape.
1. CONFIRMATION AND ADJUSTMENT
Read the following NOTES before starting work.
• Place an object which weighs between 450g~500g on the
Cassette Tape to keep it steady when you want to make
the tape run without the Cassette Holder. (Do not place
an object which weighs over 500g.)
1-1: CONFIRMATION AND ADJUSTMENT OF TENSION
POST POSITION
1.
Set to the PLAY mode.
2.
Adjust the adjusting section for the Tension Arm position
so that the Tension Arm top is within the standard line of
Main Chassis.
3.
While turning the S Reel clockwise, confirm that the edge
of the Tension Arm is located in the position described
above.
Standard line of Main Chassis
T ension Arm
0.5mm (Adjusting range)
Fig. 1-1-A
Loading Motor
Screw 1
Pinch Roller Cam
Main Cam
1-20
Main Chassis (Front Side)
Fig. A
Capstan DD Unit
Clutch Ass'y
Fig. B
Adjusting section for the
Tension Arm position
Tension Band
The Tension Arm top will
move to the inside direction
of the Main Chassis.
Bend
The Tension Arm top will
move to the outside direction
of the Main Chassis.
Fig. 1-1-B
1-2: CONFIRMATION OF PLAYBACK TORQUE AND
BACK TENSION TORQUE DURING PLAYBACK
1.
After confirmation and adjustment of Tension Post
position (Refer to item 1-2), load the cassette type
torque tape and set to the PLAY mode.
2.
Confirm that the right meter of the torque tape indicates
50~90gf•cm during playback in SP mode.
3.
Confirm that the left meter of the torque tape indicates
25~40gf•cm during playback in SP mode.
1-3: CONFIRMATION OF VSR TORQUE
1.2.Install the Torque Gauge on the S Reel. Set to the Picture
Search (Rewind) mode. (Refer to Fig.1-4-B)
Then, confirm that it indicates 120~180gf•cm.
NOTE
Install the Torque Gauge on the reel disk firmly. Press the
REW button to turn the reel disk.
MECHANICAL ADJUSTMENTS
1-4: CONFIRMATION OF REEL BRAKE TORQUE
(S Reel Brake) (Refer to Fig. 1-4-B)
1.
Once set to the Fast Forward mode then set to the Stop
mode. While, unplug the AC cord when the Pinch Roller
Block is on the position of Fig. 1-4-A.
2.
Move the Idler Ass’y from the S Reel.
3.
Install the Torque Gauge on the S Reel. Turn the Torque
Gauge clockwise.
4.
Then, confirm that it indicates 60~100gf•cm.
(T Reel Brake) (Refer to Fig. 1-4-B)
1.
Once set to the Fast Forward mode then set to the Stop
mode. While, unplug the AC cord when the Pinch Roller
Block is on the position of Fig. 1-4-A.
2.
Move the Idler Ass’y from the T Reel.
3.
Install the Torque Gauge on the T reel. Turn the Torque
Gauge counterclockwise.
4.
Then, confirm that it indicates 30~50gf•cm.
Stop at this position.
The position at
STOP mode.
Capstan DD Unit
The position at FF mode.
Cassette Holder Ass’y
Pinch Roller Block
Cassette Opener
Fig. 1-4-A
2. CONFIRMATION AND ADJUSTMENT OF
TAPE RUNNING MECHANISM
Tape Running Mechanism is adjusted precisely at the
factory. Adjustment is not necessary as usual. When you
replace the parts of the tape running mechanism because of
long term usage or failure, the confirmation and adjustment
are necessary.
2-1: GUIDE ROLLER
1.
Playback the VHS Alignment Tape (MHP).
2.
Connect CH-1 of the oscilloscope to TP101 (Envelope)
and CH-2 to TP3002 (SW Pulse).
3.
Press and hold the Tracking-Auto button on the remote
control more than 2 seconds to set tracking to center.
4.
Trigger with SW Pulse and observe the envelope. (Refer
to Fig. 2-1-A)
5.
When observing the envelope, adjust the Roller Driver
(PTU94002) slightly until the envelope will be flat.
Even if you press the Tracking Button, adjust so that
flatness is not moved so much. (Refer to Fig. 2-1-B)
6.
Adjust so that the A : B ratio is better than 3 : 2 as shown
in Fig. 2-1-C, even if you press the Tracking Button to
move the envelope (The envelope waveform will begin to
decrease when you press the Tracking Button).
7.
Adjust the PG shifter during playback.
(Refer to the ELECTRICAL ADJUSTMENTS)
NOTE
After adjustment, confirm and adjust A/C head.
(Refer to item 2-2)
Torque Gauge
Torque Gauge
S Reel
T Reel
Fig. 1-4-B
NOTE
If the torque is out of the range, replace the following parts.
Check item
1-3
1-4
S Reel side:
Replacement Part
Idler Ass’y/Clutch Ass’y
S Reel/Tension Band/Tension
Connect/Tension Arm Ass’y
T Reel side:
T Reel/T Brake Band//T Brake
Spring/T Brake Arm
CH-1
Envelope
(TP101)
CH-2
SW Pulse (TP3002)
Improper
(a) Guide roller
(b) Guide pole
Entrance
Max
A B
CH-1
Track
A : B ≥
CH-2
Track
3 : 2
Fig. 2-1-A
Proper
Fig. 2-1-B
Exit
Max
Fig. 2-1-C
1-21
MECHANICAL ADJUSTMENTS
2-2: CONFIRMATION AND ADJUSTMENT OF AUDIO/
CONTROL HEAD
When the Tape Running Mechanism does not work well,
adjust the following items.
1.
Playback the VHS Alignment Tape (MHP).
2.
Confirm that the reflected picture of stamp mark is
appeared on the tape prior to P4 Post as shown in Fig. 2-
2-A.
a)
When the reflected picture is distorted, turn the screw
1 clockwise until the distortion is disappeared.
b)
When the reflected picture is not distorted, turn the
screw 1 counterclockwise until little distortion is
appeared, then adjust the a).
3.
Turn the screw 2 to set the audio level to maximum.
4.
Confirm that the bottom of the Audio/ Control Head and
the bottom of the tape is shown in Fig. 2-2-C.
c)
When the height is not correct, turn the screw 3 to
adjust the height. Then, adjust the 1~3 again.
Audio/Control Head
Reflected picture of
Stamp Mark
P4 Cap
2-3: TAPE RUNNING ADJUSTMENT
(X VALUE ADJUSTMENT)
1.
Confirm and adjust the position of the Tension Post.
(Refer to item 1-1)
2.
Adjust the Guide Roller. (Refer to item 2-1)
3.
Confirm and adjust the Audio/Control Head.
(Refer to item 2-2)
4.
Connect CH-1 of the oscilloscope to TP3002, CH-2 to
TP101 and CH-3 to HOT side of Audio Out Jack.
5.
Playback the VHS Alignment Tape (MHP).
6.
Press and hold the Tracking-Auto button on the remote
control more than 2 seconds to set tracking to center.
7. Set the X Value adjustment driver (X-JG153) to the 4 of
Fig. 2-2-B. At first, turn the Audio/Control Head position
fully toward the capstan side. Then adjust X Value to turn
it back gradually toward the cylinder side and stop on the
second peak point position of the envelope.
Play MHP
Waveform output
X-value adjustment point
Drum side Control head position Capstan side
Play MHP-L
Audio/Control Head
3
2
Audio/Control Head
Tape
Stamp Mark
1
4
Fig. 2-2-A
Fig. 2-2-B
0.25±0.05mm
Fig. 2-2-C
Maximum
Perform tracking operation and confirm the envelope is
8.
maximum on the tracking center position.
Playback the VHS Alignment Tape (MHP-L).
9.
Perform tracking operation and confirm the envelope is
10.
maximum on the tracking center position. If envelop is not
maximum, should be fine-tune the X-VALUE.
Fig. 2-3
1-22
ELECTRICAL ADJUSTMENTS
Read and perform this adjustment when repairing the
circuits or replacing electrical parts or PCB assemblies.
1. BASIC ADJUSTMENT
1-1: SWITCHING POINT
CONDITIONS
MODE-PLAYBACK
Input Signal-Alignment Tape (MHP)
INSTRUCTIONS
Connect CH-1 on the oscilloscope to TP3002 and CH-2
1.
to TP8001.
Playback the alignment tape. (MHP)
2.
Press and hold the Tracking-Auto button on the remote
3.
control more than 2 seconds to set tracking to center.
Press both CH UP button on the set and the STOP button
4.
on the set for more than 2 seconds.
ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE
6.5H
6.5H
CH-2
CH-1
CH-2
CH-1
Fig. 1-1-A
Fig. 1-1-B
TU301
TP8001
TP101
TP3002
J8001
J8008
J8006J8009J8007OS8001
VCR MT PCB
TP101 : Envelope
TP3001: Service Mode
TP3002: Switching Pulse
TP8001: Switching Point
TP3001
J8003 J8004 J8005
V651
1-23
IC DESCRIPTIONS
SYSCON PCB OEC0110A (IC3001)
No. PORT PIN NAME I/O DESCRIPTION
1 SVSS SVSS - Ground.
2 CTL_REF CTL_REF Output terminal for CTL amp REF (1/2 SVCC)
3 CTL-H(+) CTL-H(+) Input and output terminal of Control Head.
4 CTL-H(-) CTL-H(-) Input terminal of Control Head.
5 CTL_BIAS CTL_BIAS Output terminal for bias.
6 CTL_FB CTL_FB Input terminal for CTL feedback
7 CTL_AMP(O) CTL_AMP(O) Output terminal for amp out.
8 CTL_AMP(I) CTL_AMP(I) Input terminal for CTL shumit amp .
9 CFG CFG Input terminal for CAPSTAN FG signal detection.
10 SVCC SVCC + 5V (Servo)
11 AFC_PC AFC_PC AFC oscilator (external circuit).
12 AFC_OSC AFC_OSC AFC oscilator (external circuit).
13 AFC_LPF AFC_LPF LPF connection for AFC OSC.
14 CSYN/HSYN CSYNC OUT Output terminal for composite SYNC.
15 VLPF/VSYN VSYNC IN Input terminal for composite SYNC.(from 14pin)
16 CV_IN2 CV_IN2 IN Composite Video input terminal.(for data slicer)
17 CV_IN1 CV_IN1 IN Composite Video input terminal.(for OSD)
18 OSD VCC OSDVCC - + 5V
19 CV_OUT CV_OUT OUT Composite Video output.(with OSD)
20 OSD_VSS OSD_VSS - Ground.
21 4/2 FSC_OUT 4/2 FSC_OUT OUT 2 FSC pulse.
22 4/2 FSC_IN 4/2 FSC_IN IN 2 FSC pulse.
23 AVSS AVSS - Ground.
24 AN-B VIDEO_ENV IN Input terminal of video RF envelope.
25 AN-A BOT-H IN Tape start sensor input signal.
26 AN-9 EOT-H IN Tape end sensor input signal.
27 AN8 MS_SEN-B IN Input terminal of mecha state sensor.
28 P07/AN7 MS_SEN-A IN
29 P06/AN6 KEY-B IN Main unit key input.
30 P05/AN5 KEY-A IN
31 P04/AN4 STEREO_SEL IN Input terminal for the judgement of voice reception condition.
32 P03/AN3 HI-FI_ENV IN Input terminal of HiFi RF envelope.
33 P02/AN2 AFT-S_CURVE IN AFT S CURVE input for tuner.
34 P01/AN1 SERVICE IN Input terminal for Service Mode.
35 P00/AN0 TAB SW IN Input terminal for judge the tape if it has TAB or not.
36 AVCC AVCC - ON/OFF control Micon AD section.
37 P10/IRQ0 POWER_FAIL IN Input terminal of Power fail signal.
38 P11/IRQ1 CFG IN2 IN Input terminal for CAPSTAN FG signal detection.
39 P12/IRQ2 NC IN Not used.(for FZTAT)
1-24
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