JVC HR-J6009UM User manual

SERVICE MANUAL
No.82905
January 2002
HR-J6009UM
VIDEO CASSETTE RECORDER
SPECIFICATIONS
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD
GENERAL
Power requirement
Power consumption
Power on
Power off
Temperature
Operating
Storage
Operating position
Dimensions (W x H x D)
Weight
Format
Maximum recording time
SP
EP
VIDE O/AUDIO
Signal system
Recording/Playback
system
Signal-to-noise ratio
Horizontal resolution
Frequency range
Normal audio
Hi-Fi audio
Input/Output
TUNER
Tuning system
Channel coverage
VHF
UHF
CA T V
R F output
TIMER
Clock reference
Program capacity
Memory backup for timer
ACCESSO RIES
Provided accessories
Specifications shown are for S P mode unless specified otherwise.
E. & O.E. Design and specifications subject to change without notice.
: AC 110 V-220 V~, 50 Hz/60 Hz
: 10 W
: 2.0 W
:5°C to 40°C (41°F to 104°F)
:–20°C to 60°C
(–4°F to140°F)
: Horizontal only
: 360 mm x 95 mm x 224 mm
: 3.2 kg
: VHS NTSC standard
: 210 min. with ST -210 video cassette
: 630 min. with ST -210 video cassette
: NTSC-type color signal and
E IA monochrome signal, 525 lines/60 fields
: DA-4
(Double Azimuth) head helical scan system
: 42 dB
: 230 lines
: 100 Hz to 10,000 Hz
: 20 Hz to 20,000 Hz
:
RC A connectors (IN x 1, OUT x 1)
: Frequency-synthesized tuner
: Channels 2–13
: Channels 14– 69
: 113 Channels
: Channel 3 or 4 (switchable; preset to
Channel 3 when shipped) 75 ohms,
unbalanced
: Quartz
: 1-month programmable timer/8 programs
: Approx. 18 hours
: R F cable (F-type),
Infrared remote control unit,
“AAA” battery x 2, Conversion plug
VIDEO (MONO) L – AUDIO – R
POWER CH
REC
REW
PLAY
FF
STOP/EJECT
MENU
REC
REW FF
CH(AUX)
ENTER
12 3
456
7
0
89
SET
–
TV/VCR TIMER
A.MONITOR SP/EP DISPLAY
CANCEL
C.RESET
TV CH
TVVOL
INPUT
+
–
+
–
+
–
+
PAUSE
PLAY
STOP
TV POWER
POWER
HR-J6009UM V15D1

TABLE OF CONTENTS
Section Title Page Section Title Page
Important Safety Precautions
INSTRUCTIONS
DISASSEMBLY INSTRUCTION
1.REMOVAL OF MECHANICAL PARTS AND
P.C.BOARDS ..................................................................1-1
1-1 TOP CABINETAND FRONT CABINET ..................1-1
1-2 FLAP .......................................................................1-1
1-3 DECK CHASSIS .....................................................1-1
1-4 SYSCON PCB.........................................................1-1
2.REMOVAL OF DECK PARTS .........................................1-2
2-1 TOP BRACKET .......................................................1-2
2-2 CASSETTE HOLDER ASS’Y ..................................1-2
2-3 CASSETTE SIDE L/R .............................................1-2
2-4 LINK UNIT ...............................................................1-2
2-5 LINK LEVER/FLAP LEVER.....................................1-2
2-6 LOADING MOTOR/WORM .....................................1-3
2-7 TENSION ASS’Y .....................................................1-3
2-8 T BRAKE ARM/T BRAKE BAND .............................1-4
2-9
S REEL/T REEL/IDLERARM ASS’Y/IDLER GEAR ........ 1-4
2-10 CASSETTE OPENER/PINCH ROLLER
BLOCK/P5 ARM ASS’Y...........................................1-5
2-11 A/C HEAD ...............................................................1-5
2-12 FE HEAD(RECORDER ONLY) ...............................1-5
2-13 AHC ASS’Y/CYLINDER UNIT ASS’Y......................1-5
2-14 CAPSTAN DD UNIT ................................................1-6
2-15
MAIN CAM/PINCH ROLLER CAM/JOINT GEAR ............ 1-6
2-16
LOADING GEAR S/T UNIT.............................................. 1-6
2-17
CLUTCH ASS’Y/RING SPRING/
CLUTCH LEVER/CLUTCH GEAR ...................................
1-7
2-18
CASSETTE GUIDE POST/
INCLINED BASE S/T UNIT/P4 CAP ................................
1-7
3.
REMOVALAND INSTALLATION OF FLAT PACKAGE IC ........ 1-8
REMOVAL........................................................................1-8
INSTALLATION ................................................................1-9
KEY TO ABBREVIATIONS .............................................1-10
PREVENTIVE CHECKS AND SERVICE INTERVALS....1-12
CLEANING......................................................................1-12
SERVICE MODE LIST.....................................................1-13
SERVICING FIXTURES AND TOOLS.............................1-13
MECHANISM ADJUSTMENT PARTS LOCATION GUIDE....... 1-13
MECHANICAL ADJUSTMENTS
TAPE REMOVAL METHOD AT NO POWER SUPPLY ....1-14
1.CONFIRMATION AND ADJUSTMENT ......................... 1-14
1-1 CONFIRMATION AND ADJUSTMENT OF
TENSION POST POSITION .................................1-14
1-2 CONFIRMATION OF PLAYBACK TORQUE AND
BACK TENSION TORQUE DURING PLAY BACK..1-14
1-3 CONFIRMATION OF VSR TORQUE ....................1-14
1-4 CONFIRMATION OF REEL BRAKE TORQUE .....1-15
2.CONFIRMATION AND ADJUSTMENT OF
TAPE RUNNING MECHANISM ....................................1-15
2-1 GUIDE ROLLER ...................................................1-15
2-2 CONFIRMATION AND ADJUSTMENT OF
AUDIO/CONTROL HEAD .....................................1-16
2-3
TAPE RUNNING ADJUSTMENT(X-VALUE ADJUSTMENT) ... 1-16
ELECTRICAL ADJUSTMENTS
1.BASIC ADJUSTMENT ..................................................1-17
1-1 SWITCHING POINT..............................................1-17
ELECTRICALADJUSTMENT PARTS LOCATION GUIDE ........ 1-17
IC DESCRIPTIONS .........................................................1-18
SERVO TIMING CHART .................................................1-21
MECHANISM TIMING CHART........................................1-22
TROUBLESHOOTING GUIDE
POWER DOES NOT TURN ON .............................................. 1-23
POWER SHUTS OFF ....................................................1-24
CYLINDER NOT ROTATING DURING PLAYBACK AND RECODRDING.. 1-25
CASSETTE IN AND DOWN, UNIT HAS NO FUNCTIONS ..... 1-25
FF/REW DO NOT WORK ..............................................1-26
AUDIO SHAKES ............................................................1-26
CASSETTE TAPE IS NOTACCEPTED.........................1-27
WHEN INSERTING CASSETTE, IT EJECTS IMMEDIATELY .. 1-28
TAPE LOADING IS OK, BUT UNLOADS IMMEDIATELY.. 1-29
CAPSTAN DD MOTOR NOT ROTATING ......................1-30
PLAYBACK PICTURE JITTERS HORIZONTALLY ........1-31
PLAYBACK PICTURE SHAKES ....................................1-31
AUTO TRACKING DOES NOT OPERATE ....................1-32
WHEN PLAYBACK, FAST FORWARD OR REWIND MODE ISACTIVATED,
UNIT STOPS IMMEDIATELY
.....................................................1-32
PLAYBACK PICTURE JITTERS VERTICALLY .............1-33
NO PLAYBACK PICTURE .............................................1-34
NO PICTURE DURING PLAYBACK ..............................1-35
NO COLOR DURING SELF RECORDING AND PLAYBACK . 1-35
PLAYBACK PICTURE NOISY(EVEN AFTER CLEANING HEADS) ... 1-36
NO NORMALAUDIO ON PLAYBACK ...........................1-37
AUDIO CAN NOT BE RECORDED ...............................1-38
RECORDING MECHANISM WORKS,
BUT NO VIDEO RECORDED FROM INPUTJACK OR TUNER ..
1-39
NO E-E(NO VIDEO FROM TUNER)..............................1-40
NO E-E AUDIO(MONO) .................................................1-41
NO TUNER AUDIO(MONO)...........................................1-42
CHARTS AND DIAGRAMS
INTERCONNECTION DIAGRAM ......................................2-1
Y/C/AUDIO/CCD/HEAD AMP SCHEMATIC DIAGRAM.....2-3
SYSTEM CONTROL/SERVO SCHEMATIC DIAGRAM ....2-5
POWER SCHEMATIC DIAGRAM......................................2-7
TUNER SCHEMATIC DIAGRAM .......................................2-9
OPERATION SCHEMATIC DIAGRAM ............................ 2-11
HI-FI/DEMODULATOR SCHEMATIC DIAGRAM.............2-13
SYSCON CIRCUIT BOARD(INSERTED PARTS) ...........2-15
SYSCON CIRCUIT BOARD(CHIP MOUNTED PARTS)..2-17
WAVEFORMS ..................................................................2-20
Y/C/AUDIO/HEAD AMP BLOCK DIAGRAM ....................2-21
SYSTEM CONTROL/SERVO BLOCK DIAGRAM ...........2-23
TUNER BLOCK DIAGRAM..............................................2-25
OPERATION BLOCK DIAGRAM .....................................2-27
POWER BLOCK DIAGRAM ............................................2-27
HI-FI/DEMODULATOR BLOCK DIAGRAM .....................2-29
PARTS LIST
3.1 PACKING AND ACCESSORY ASSEMBLY <M1> .....3-1
3.2 FINALASSEMBLY <M2>...........................................3-2
3.3 MECHANISM ASSEMBLY <M4>...............................3-4
3.4 ELECTRICAL PARTS LIST .......................................3-7
SYSCON BOARD ASSEMBLY <03>.........................3-7
Reference..........................................................................4-1
GENERAL SPECIFICATIONS ...........................................4-1

Important Safety Precautions
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.
Fig.1
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 com-
ply with these and other cautionary notices appearing in the
operation and service manuals.
2. Parts identified by the symbol and shaded ( ) parts are
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.
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 cath-
ode 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.
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 or-
der 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.7
cut close to connector
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.4
(3) Align the lengths of the wires to be connected. Insert
the wires fully into the connector.
Connector
Metal sleeve
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
v
Precautions during Servicing
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.
1.25
2.0
5.5
Crimping tool
Fig.6
(5) Check the four points noted in Fig.7.
Not easily pulled free Crimped at approx. center
of metal sleeve
Conductors extended
Wire insulation recessed
more than 4 mm
S40888-01

v 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 compli-
ance 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’) be-
tween soldered terminals, and between terminals and surrounding metallic parts. See table 1
below.
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 accessi-
ble parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and
following table 2.
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.
d'
d
Chassis
Power cord,
primary wire
Region
USA & Canada
Europe & Australia
Grounding Impedance (Z)
Z 0.1 ohm
Z 0.5 ohm
≤
≤
AC inlet
Earth pin
Exposed accessible part
Milli ohm meter
Grounding Specifications
Fig. 10
ab
c
V
Externally
exposed
accessible part
Z
Fig. 9
Fig. 8
Clearance Distance (d), (d')
d, d' 3 mm
d, d' 4 mm
d, d' 3.2 mm
1 MΩR 12 MΩ/500 V DC
Dielectric Strength
AC 1 kV 1 minute
AC 1.5 kV 1 miute
AC 1 kV 1 minute
AC Line Voltage
100 V
100 to 240 V
110 to 130 V
110 to 130 V
200 to 240 V
Japan
USA & Canada
Europe & Australia R 10 MΩ/500 V DC
Region
Insulation Resistance (R)
R 1 MΩ/500 V DC
≤
≤
≥≥
≤
≤
≤≤
≤
≤
AC 3 kV 1 minute
(Class 2)
AC 1.5 kV 1 minute
(Class 1)
d 4 mm
d' 8 mm (Power cord)
d' 6 mm (Primary wire)
Table 1 Specifications for each region
a, b, cLeakage Current (i)AC Line Voltage
100 V
110 to 130 V
110 to 130 V
220 to 240 V
Japan
USA & Canada
i 1 mA rms Exposed accessible parts
Exposed accessible parts
Antenna earth terminals
Other terminals
i 0.5 mA rms
i 0.7 mA peak
i 2 mA dc
i 0.7 mA peak
i 2 mA dc
Europe & Australia
Region Load Z
≤
≤
≤
≤
≤
≤
1 kΩ
2 kΩ
1.5 kΩ
0.15 µF
50 kΩ
Table 2 Leakage current specifications for each region
Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
2S40888-01

DISASSEMBLY INSTRUCTIONS
1-1
1
1
1
Deck Chassis
Bottom Plate
1.
1-1:
1
1
2
Top Cabinet
Front Cabinet
Fig. 1-1
REMOVAL OF MECHANICAL PARTS
AND P.C. BOARDS
TOP CABINET AND FRONT CABINET
(Refer to Fig. 2-1)
1.
2.
3.
4.
Remove the 4 screws 1.
Remove the Top Cabinet in the direction of arrow (A).
Unlock the 7 supports 2.
Remove the Front Cabinet in the direction of arrow (B).
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).
1-3: DECK CHASSIS (Refer to Fig. 1-3)
1.
2.
3.
Remove the 3 screws 1.
Disconnect the following connectors: (CP1001, CP4001,
CP4002 and CP4003).
Remove the Deck Chassis in the direction of arrow.
Fig. 1-2
Fig. 1-3
(A)
Flap
(B)
(C)
1
1
(A)
2
2
2
2
2
2
(B)
1-4: SYSCON PCB (Refer to Fig. 1-4)
1.
2.
3.
Remove the screw 1.
Remove the screw 2.
Remove the Syscon PCB in the direction of arrow.
Fig. 1-4
1
2
Syscon PCB
Bottom Plate
Washer
Washer
Washer
CP1001
CP4001CP4002
CP4003

DISASSEMBLY INSTRUCTIONS
1-2
2. REMOVAL OF DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1)
Extend the 2 supports 1.
Slide the 2 supports 2and remove the Top Bracket.
1.
2.
NOTE
After the installation of the Top Bracket, bend the support
1so that the Top Bracket is fixed.
1.
11
2
2
Top Bracket
Main Chassis
Top Bracket
Main Chassis
Fig. 2-1
1.
2.
3.
2-2: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-2)
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.
Fig. 2-2
Link Unit Main Chassis
Main Chassis
Cassette Side L
Cassette Side R
Locker R
1.
2.
3.
2-3: CASSETTE SIDE L/R (Refer to Fig. 2-3-A)
Remove the Locker Spring.
Unlock the 4 supports 1and then remove the Cassette
Side L/R.
Unlock the support 2and then remove the Locker R.
Locker Spring
Cassette Side L
Cassette Side R
Locker R
Cassette Holder
1
1
1
1
2
In case of the Locker R installation, check if the two
positions of Fig. 2-3-B are correctly locked.
When you install the Cassette Side R, be sure to move
the Locker R after installing.
NOTE
1.
2.
Locker R
Check if these
positions are locked.
Cassette Side R
Fig. 2-3-B
2-4: LINK UNIT (Refer to Fig. 2-4)
1.
2.
3.
Set the Link Unit to the Eject position.
Unlock the support 1.
Remove the (A) side of the Link Unit first, then remove
the (B) side.
Fig. 2-4
(A)
Link Unit
Main Chassis
(B)
Link Unit
Main Chassis
Fig. 2-3-A
2-5: LINK LEVER/FLAP LEVER (Refer to Fig. 2-5)
1.
2.
3.
Extend the support 1.
Remove the Link Lever.
Remove the Flap Lever.
Fig. 2-5
Link Lever
Flap Lever
1

DISASSEMBLY INSTRUCTIONS
1-3
2-6: LOADING MOTOR/WORM (Refer to Fig. 2-6-A)
1.
2.
3.
Remove the screw 1.
Remove the Loading Motor.
Remove the Worm.
Fig. 2-6-A
Loading Motor
Worm
• Screw Torque: 3 ±0.5kgf•cm
Main Chassis
1
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.
Fig. 2-6-B
19.2 ±0.1mm
Safety surface for pressing
of the insert.
2-7: TENSION ASS’Y (Refer to Fig. 2-7-B)
1.
2.
3.
4.
5.
6.
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.
Remove the Tension Spring.
Unlock the 2 supports 1and remove the Tension Band.
Unlock the support 2and remove the Tension Arm Ass’y.
Unlock the support 3and remove the Tension Connect.
Float the hook 4and turn it clockwise then remove the
Tension Holder.
Fig. 2-6-C
Loading Motor
Cassette Opener
Fig. 2-7-B
Tension Band
Tension Connect
Tension Spring Tension Arm Ass’y
Tension Holder
1
1
3
2
4
NOTE
1.
2.
3.
In case of the Tension Band installation, note the direc-
tion of the installation. (Refer to Fig. 2-7-C)
In case of the Tension Band installation, install correctly
as Fig. 2-7-D.
In case of the Tension Connect installation, install as the
circled section of Fig. 2-7-E.
Fig. 2-7-C
Tension Band
Tension Connect
Fig. 2-7-D
[OK]
[NG]
Tension Connect
Tension Band
Tension Connect Tension Band
Fig. 2-7-E
Tension Connect
Main Chassis
Tension Arm Ass’y
Fig. 2-7-A

DISASSEMBLY INSTRUCTIONS
1-4
2-8: T BRAKE ARM/T BRAKE BAND (Refer to Fig. 2-8-A)
Remove the T Brake Spring.
Turn the T Brake Arm clockwise and bend the hook
section to remove it.
Unlock the 2 supports 1and remove the T Brake Band.
1.
2.
3.
Fig. 2-8-A
T Brake Band
Hook section
T Brake Arm
T Brake Spring
1
1
NOTE
1. In case of the T Brake Band installation, install correctly
as Fig. 2-8-B.
Fig. 2-8-B
[OK]
[NG]
T Brake Arm
T Brake Band
T Brake Arm
T Brake Band
2-9: S REEL/T REEL/IDLER ARM ASS’Y/IDLER GEAR
(Refer to Fig. 2-9-A)
1.
2.
3.
Remove the S Reel and T Reel.
Remove the 2 Polyslider Washers 1.
Remove the Idler Arm Ass’y and Idler Gear.
NOTE
1.
2.
3.
4.
5.
6.
Take care not to damage the gears of the S Reel and T
Reel.
The Polyslider Washer may be remained on the back of
the reel.
Take care not to damage the shaft.
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.
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.)
After installing the reel, adjust the height of the reel.
(Refer to MECHANICAL ADJUSTMENT)
Fig. 2-9-A
Idler Gear
Idler Arm Ass’y
S Reel
T Reel
(A)
1
1
(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 ArmAss’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.
Fig. 2-9-B
Big Hole
(S Reel) Small Hole (T Reel)
Fig. 2-9-C
[OK]
[NG]
Clutch Gear Idler Arm Ass’y
Idler Arm Ass’y
Clutch Gear
(B)