Jvc HR-XVC29-SUS, HR-XVC29-SUC, HR-XVC28-BUS, HR-XVC28-BUC Service Manual

SERVICE MANUAL
DVD PLAYER & VIDEO CASSETTE RECORDER
YD05220053
HR-XVC28BUC, HR-XVC28BUS, HR-XVC29SUC, HR-XVC29SUS
HR-XVC28BUC, HR-XVC28BUS, HR-XVC29SUC, HR-XVC29SUS [D5PV1]
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
COPYRIGHT © 2005 Victor Company of Japan, Limited
No.YD052
2005/3
SPECIFICATION
GENERAL
Power requirement AC 120 V, 60 Hz
Power consumption
Power on 25 W
Power off
Temperature
Operating 5
Storage -20
Operating position Horizontal only
Dimensions (W
Maximum recording time
VIDEO/AUDIO (VCR deck)
Recording system DA4 (Double Azimuth) head helical scan system
Signal-to-noise ratio 45 dB
Horizontal resolution 230 lines
VIDEO/AUDIO (DVD deck)
Audio characteristics DVD:4 Hz - 22 KHz
Frequency response CD:4 Hz - 20 KHz
Harmonic distortion 0.1%
Output
Component-PB/PR (RCA) 0.7 Vp-p/75
TUNER
Channel coverage VHF: Channels 2 - 13, UHF: Channels 14 - 69, CATV: 113 Channels
TIMER
Program capacity 1-year programmable timer/8 programs
ACCESSORIES
Provided accessories RF cable, Infrared remote control unit, "AA" battery
× H × D) 435 mm x 93 mm x 272 mm
Weight
Format VHS NTSC standard
(SP) 210 min. with T-210 video cassette
(EP) 630 min. with T-210 video cassette
Signal system NTSC color signal and EIA monochrome signal, 525 lines/60 fields
Frequency range 70 Hz to 10,000 Hz (Normal audio) 20 Hz to 20,000 Hz (Hi-Fi audio)
Input/Output RCA connectors: IN
Signal system NTSC
Applicable disc DVD (12 cm, 8 cm), CD (12 cm, 8 cm)
S/N Ratio 90 dB
Wow and flutter Below Measurable Level
Dynamic range 90 dB
Component-Y (RCA) 1.0 Vp-p/75
Audio (RCA) 2 Vrms, 1 K
Digital Audio (COAXIAL) 0.5 Vp-p/75
Tuning system Frequency synthesized tuner
RF output Channel 3 or 4 (switchable; preset to Channel 3 when shipped) 75 , unbalanced
Clock reference Quartz
°C to 40°C (41°F to 104°F)
°C to 60°C (-4°F to140°F)
• Specifications shown are for SP mode unless otherwise specified.
• E.& O.E. Design and specifications subject to change without notice.
• Manufactured under license from Dolby Laboratories. "Dolby" and the double-D symbol are trademarks of Dolby Laboratories.
• "DTS" and "DTS 2.0 + Digital Out" are trademarks of Digital Theater Systems, Inc.
2.0 W
4.1 kg (9.1Ibs)
× 1, OUT × 1
× 2
1-2 (No.YD052)
SECTION 1
r
PRECAUTION

1.1 SAFTY 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.
1.1.1 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 symbol and shaded ( ) parts
are critical for safety. Replace only with specified part numbers.
NOTE :
Parts in this category also include those specified to comply 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:
• Wires covered with PVC tubing
• Double insulated wires
• High voltage leads
(5) Use specified insulating materials for hazardous live parts.
Note especially:
• Insulation Tape
• PVC tubing
•Spacers
• Insulation sheets for transistors
•Barrier
(6) When replacing AC primary side components (transformers,
power cords, noise blocking capacitors, etc.) wrap ends of wires securely about the terminals before soldering.
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.
(12) Crimp type wire connectorIn such cases as when replacing
the power transformer in sets where the connections be­tween the power cord and power trans former 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.
Connector part number :E03830-001
Required tool : Connector crimping tool of the proper type which will not damage insulated parts.
Replacement procedure
a) Remove the old connector by cutting the wires at a
point close to the connector.Important : Do not re­use a connector (discard it).
cut close to connector
Fig.1-1-3
b) 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.1-1-4
c) Align the lengths of the wires to be connected. In-
sert the wires fully into the connector.
Metal sleeve
Fig.1-1-1
(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.1-1-2 (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.
Connector
Fig.1-1-5
d) As shown in Fig.1-1-6, 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
Crimping tool
Fig.1-1-6
e) Check the four points noted in Fig.1-1-7.
Not easily pulled free
Wire insulation recessed
more than 4 mm
Crimped at approx. cente
of metal sleeve
Conductors extended
Fig.1-1-7
(No.YD052)1-3
1.1.2 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 Fig.1-1-11 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 Fig.1-1-11 below.
d
Chassis
d'
Power cord primary wire
Fig.1-1-8
(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 Fig.1-1-9 and follow­ing Fig.1-1-12.
ab
Externally exposed accessible part
Z
V
c
A
Fig.1-1-9
(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 Fig.1-1-10 and grounding specifications.
AC inlet
Earth pin
Exposed accessible part
MIlli ohm meter
Grounding Specifications
Region
USA & Canada
Europe & Australia
Grounding Impedance (Z
Z 0.1 ohm
Z 0.5 ohm
)
Fig.1-1-10
AC Line Voltage
100 V
100 to 240 V
110 to 130 V
110 to 130 V
200 to 240 V
Region
Japan
USA & Canada
Europe & Australia
Insulation Resistance (R
R 1 M /500 V DC
1 M R 12 M /500 V DC
R 10 M /500 V DC
)
Dielectric Strength
AC 1 kV 1 minute
AC 1.5 kV 1 minute
AC 1 kV 1 minute AC 3 kV 1 minute
AC 1.5 kV 1 minute
(
Class
(
Class
Clearance Distance (d), (d'
d, d' 3 mm
d, d' 4 mm
d, d' 3.2 mm
d 4 m m
)
d' 8 m m (Power cord d' 6 m m (Primary wire
)
Fig.1-1-11
AC Line Voltage
100 V
110 to 130 V
110 to 130 V
220 to 240 V
Region
Japan
USA & Canada
Europe & Australia
Load Z Leakage Current (i)
1
0.15
1.5
2
50
i 1 mA rms
i 0.5 mA rms
i 0.7 mA peak i 2 mA dc
i 0.7 mA peak i 2 mA dc
a, b, c
Exposed accessible parts
Exposed accessible parts
Antenna earth terminals
Other terminals
Fig.1-1-12
NOTE :
These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
)
)
)
1-4 (No.YD052)

1.2 Preventing static electricity

Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.2.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players. Be careful to use proper grounding in the area where repairs are being performed.
(1) Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it.
(2) Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
(3) Handling the optical pickup
• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.)
• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily destroy the laser diode.
(No.YD052)1-5

1.3 Precautions for Service

1.3.1 Handling of Traverse Unit and Laser Pickup
(1) Do not touch any peripheral element of the pickup or the actuator. (2) The traverse unit and the pickup are precision devices and therefore must not be subjected to strong shock. (3) Do not use a tester to examine the laser diode. (The diode can easily be destroyed by the internal power supply of the tester.) (4) To replace the traverse unit, pull out the metal short pin for protection from charging. (5) When replacing the pickup, after mounting a new pickup, remove the solder on the short land which is provided at the center of
the flexible wire to open the circuit.
(6) Half-fixed resistors for laser power adjustment are adjusted in pairs at shipment to match the characteristics of the optical block.
Do not change the setting of these half-fixed resistors for laser power adjustment.
1.3.2 Destruction of Traverse Unit and Laser Pickup by Static Electricity
Laser diodes are easily destroyed by static electricity charged on clothingor the human body. Before repairing peripheral elements of the traverse unit or pickup, be sure to take the following electrostatic protection:
(1) Wear an antistatic wrist wrap. (2) With a conductive sheet or a steel plate on the workbench on which the traverse unit or the pick up is to be repaired, ground the
sheet or the plate. (3) It solders to two short circuit sections on the substrate of a pick-up. (4) After removing the flexible wire from the connector (CN101 (5) Short-circuit the laser diode by soldering the land which is provided at the center of the flexible wire for the pickup.
After completing the repair, remove the solder to open the circuit.
), short-circuit the flexible wire by the metal clip.
Pick-up
Short circuit
* Please refer to the SECTION3 DISASSEMBLY method for details.
CN101
DVD SERVO CONTROL BOARD
1-6 (No.YD052)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS

2.1 Different table of feature

The following table indicates main different points between models HR-XVC28BUC, HR-XVC28BUS, HR-XVC29SUC and HR­XVC29SUS.
HR-XVC28BUC HR-XVC28BUS HR-XVC29SUC HR-XVC29SUS
BODY COLOR BLACK PURE SILVER
MP3 PLAYBACK USED NOT USED USED NOT USED
NOTE :
Mark is same as left.

2.2 Service position

This unit has been designed so that the Mechanism and Main board assemblies can be removed together from the bottom chassis. Before diagnosing or servicing the circuit boards, take out the major parts from the bottom chassis.
2.2.1 How to set the "Service position"
(1) Refer to the disassembly procedure and perform the disas-
sembly of the major parts before removing the Mechanism assembly.
(2) Remove the screws that fix the Mechanism, Main board as-
sembly to the bottom chassis. If any other screws are used to fix the boards, remove them also.
(3) Remove the combined Mechanism and Main board assem-
blies. (4) If any other major parts are used, remove them also. (5) Connect the wires and connectors of the major parts that
have been removed in steps (1) to (4). (Refer to Fig. 2-2a.) (6) Place the combined Mechanism, Main board and other
board assemblies upside down. (7) Insert the power cord plug into the power outlet and then
proceed with the diagnostics and servicing of the board as-
sembly.
Notes:
Before inserting the power cord plug into the power out-
let, make sure that none of the electrical parts are able to short-circuit between the workbench and the board assembly.
For the disassembly procedure of the major parts and
details of the precautions to be taken, see "Removing the major parts".
If there are wire connections from the Main board and
Mechanism assemblies to the other major parts, be sure to remove them (including wires connected to the major parts) first before performing step (2).
When carrying out diagnosis and repair of the Main
board assembly in the "Service position", be sure to ground both the Main board and Mechanism assem­blies. If they are improperly grounded, there may be noise on the playback picture or FDP counter display may move even when the mechanism is kept in an inop­erative status.
In order to diagnose the playback or recording of the
cassette tape, set the Mechanism assembly to the re­quired mode before placing it upside down. If the mech­anism mode is changed (including ejection) while it is in an upside down position the tape inside may be dam­aged.
For some models, the mechanism and board assem-
blies are attached by connectors only. When carrying out a diagnosis or repair of the boards in the "Service position", make sure that the connectors are not dis­connected.
TP111 D.FF
TP4001 CTL.P
TP106 PB FM
TP2253 A.PB FM
Display board assembly
Fig.2-2a

2.3 Jig RCU mode

This unit uses the following two modes for receiving remote con­trol codes.
(1) User RCU mode:Ordinary mode for use by the user.
(2) Jig RCU mode: Mode for use in production and servicing. When using the Jig RCU, it is required to set the VCR to the Jig RCU mode (the mode in which codes from the Jig RCU can be received). As both of the above two modes are stored in the EE­PROM, it is required to set the VCR back to the User RCU mode each time that an adjustment is made or to check that the neces­sary operations have been completed.These modes can be set by the operations described below.
Note:
Confirm the RCU mode when exchanged parts. Since
some SERVICE PARTS sets the VCR to the Jig RCU mode as initial setting. Therefore please set the VCR to the user RCU mode after replacing the EEPROM.
Main board assembly
Switch/jack board assembly
(No.YD052)1-7
User RCU mode
Jig RCU mode
(3) After cleaning, make sure that the cleaned parts are com-
pletely dry before using the cassette tape.
( not displayed)
Fig.2-3a User/Jig RCU mode
2.3.1 Setting the Jig RCU mode
(1) Turn on the power. (2) Press the following remocon keys continuously within 2
seconds " SET UP " " 2 " " 8 " " ENTER ".
When the VCR is set to the Jig RCU mode, the symbols ( " : " ) in the time display of the FDP are turned off. (Refer to Fig.2-3a)
2.3.2 Setting the User RCU mode
(1) Turn off the power. (2) Press the "REC" and "PAUSE" buttons of the VCR simul-
taneously. Alternatively, transmit the code "43-80" from the Jig RCU.

2.4 Mechanism service mode

This model has a unique function to enter the mechanism into ev­ery operation mode without loading of any cassette tape. This function is called the "Mechanism service mode".
2.4.1 How to set the "Mechanism service mode"
(1) Set the VCR to the Jig RCU mode (the mode in which
codes from the Jig RCU can be received) (2) Transmit the code "43-E5" from the Jig RCU. (3) Release the lug of the Cassette holder and then slide the
Cassette holder toward the direction where the Cassette
holder is loaded by manually. (4) The cassette holder lowers and, when the loading has
completed, the mechanism enters the desired mode.
When the VCR is set to the Mechanism service mode, the
symbols ("Timer") in the FDP (LED) are blinked.
2.4.2 How to exit from the "Mechanism service mode"
(1) Unplug the power cord plug from the power outlet.

2.5 Maintenance and inspection

2.5.1 Cleaning
Regular cleaning of the transport system parts is desirable but practically impossible. So make it a rule to carry out cleaning of the tape transport system whenever the machine is serviced. When the video head, tape guide and/or brush get soiled, the playback picture may appear inferior or at worst disappear, re­sulting in possible tape damage.
Note:
Absolutely avoid sweeping the upper drum vertically as
this will cause damage to the video head.
(1) When cleaning the upper drum (especially the video head),
soak a piece of closely woven cloth with alcohol and while
holding the cloth onto the upper drum by the fingers, turn
the upper drum counterclockwise. (2) To clean the parts of the tape transport system other than
the upper drum, use a piece of closely woven cloth or a cot-
ton swab soaked with alcohol.
A/C head
Fig.2-5a
2.5.2 Lubrication
With no need for periodical lubrication, you have only to lubricate new parts after replacement. If any oil or grease on contact parts is soiled, wipe it off and newly lubricate the parts.
Note:
See the "mechanism assembly" diagram of the "parts
list" for the lubricating or greasing spots, and for the types of oil or grease to be used.
2.5.3 Suggested servicing schedule for main components
The following table indicates the suggested period for such ser­vice measures as cleaning, lubrication and replacement. In prac­tice, the indicated periods will vary widely according to environmental and usage conditions. However, the indicated components should be inspected when a set is brought for ser­vice and the maintenance work performed if necessary. Also note that rubber parts may deform in time, even if the set is not used.
System Parts name
Drum assembly C,X X
A/C head C,X C,X
Tape transport
Drive
Other Rotary encoder X
C : Cleaning X : Inspection or Replacement if necessary
Pinch roller arm assembly C C
Full erase head C C
Tension arm assembly C C
Capstan motor (Shaft) C C
Guide arm assembly C C
Capstan motor X
Capstan brake assembly X
Main brake assembly X
Belt (Capstan) X X
Loading motor X
Clutch unit X
Worm gear X
Control plate X
Video heads
Operation hours
1000H 2000H
1-8 (No.YD052)
SECTION 3
DISASSEMBLY

3.1 Removing the major parts

3.1.1 Destination of connectors
Two kinds of double-arrows in connection tables respectively
show kinds of connector/wires.
: The connector of the side to remove
CONN. No. PIN No.CONNECTOR
WR2a
WR2b
Main CN101
Main CN103
Destination of connectors
CONN. No. PIN No.CONNECTOR
WR2a
WR2b
WR3a
WR3b
WR4a
WR4b
WR4c
Main
Main
Main
Drum assembly
Main
Main
Main
3.1.2 How to read the procedure table
This table shows the steps for disassembly of the externally fur­nished parts and board assemblies. Reverse these steps when re-assembling them.
Step/
Loc No.
[1] Top cover 3-1a
(1) (2) (3) (4) (5)
Part Name
Bracket 2(S1c)
(1) Order of steps in Procedure
When reassembling, perform the step(s) in the reverse or­der. These numbers are also used as the identification (loca-
tion) No. of parts Figures. (2) Part name to be removed or installed. (3) Fig. No. showing procedure or part location. (4) Identification of part to be removed, unhooked, unlocked,
released, unplugged, unclamped or unsoldered.
P= Spring, W= Washer, S= Screw, L= Locking tab, SD=
Solder, CN**(WR**)= Remove the wire (WR**) from the
connector (CN**).
Note:
The bracketed ( ) WR of the connector symbol are
assigned nos. in priority order and do not corre­spond to those on the spare parts list.
(5) Adjustment information for installation
: Wire: Flat wire : Board to board (B-B)
Digital CN761
Digital CN762
CN7103
CN3102
CN2001
CN7302
CN7301
CN3301
Switch/jack
Display
A/C head
Main
DVD servo control
DVD servo control
DVD servo control
Fig. No.
4(S1a),(S1b),3(L1a), <Note 1a> 2(SD1a),(P1a),(W1a), CN1(WR1a),
----------------------------------------
CN7191
CN7003
CN503
CN501
Point Note
CN1
CN1
40
10
10
22
6
9
17
19
5
3.1.3 Disassembly procedure
Step/
Loc No.
[1] [2]
[3]
[4]
[5] [6]
Part Name
Top cover Front panel assembly (Display board assembly) (
Switch/jack board assembly
Mechanism assembly
(Drum assembly)
DVD unit (Bracket)
Rear cover Main board assembly
Fig. No.
8(S1a)
3-1d
4(L2a),5(L2b),2(S2a)
3-1a
CN7103(WR2a),
3-1d
)
CN3102(WR2b) CN2001(WR3a)
3-1b
3(S3a),(S3b)
3-1c
--------------------------
CN(WR3b)
3-1d
(S3c),(S3d),(S3e) 3(S4a),3(S4b),
3-1d
CN7302(WR4a), CN7301(WR46), CN3301(WR4c) 5(S5a),5(L5a)
3-1d
3(S6a)
3-1d
Point Note
<Note 2a> <Note 2b>
<Note 2a> <Note 3a> <Note 3b> <Note 3c>
<Note 2a>
• Be careful not to damage the connector and wire etc. during connection and disconnection.
• When connecting the flat wire to the connector, be careful with the flat wire direction.
<Note 2b>
• When reattaching the Front panel assembly, make sure that the door opener of the Side frame (R) is lowered in position pri­or to the reinstallation.
• When reattaching the Front panel assembly, pay careful attention to the switch lever of the Front panel assembly not to make it touch the switch knob of the Main board assembly from the side.
• When reattaching the Front panel assembly, lift the Cassette door slightly.
Door opener
Side frame(R)
Switch knob
Switch lever
Fig.3-1a
<Note 3a>
• When reattaching the Mechanism assembly, secure the screws (S3a to S3b) in the order of 1,2,3.
<Note 3b>
• When reattaching the Mechanism assembly, be sure to align the phase of the Rotary encoder on the Main board assembly.
• When reattaching the Mechanism assembly, set the "Mecha­nism assembling mode". [See "MECHANISM ASSEMBLY SERVICE MANUAL (No. 86700)".]
• When reattaching the Mechanism assembly to the Main board assembly, take care not to damage the sensors and switch on the Main board assembly.
(No.YD052)1-9
<Note 3c>
• When reattaching the Drum assembly, secure the screws (S3c to S3e) in the order of c, d, e.
(S3d)
Mechanism assembly
(S3c)
(S3e)
(S3d)
(S3e)
Drum assembly
<Note 3c>
<NOTE> Attach the Drum assembly appropriately, since the installation state of the Drum assembly influences the FM WAVEFORM LINEARITY greatly.
(S3c)
HOOK
Fig.3-1b
• When handling the drum assembly alone, hold it by the motor or shaft. Be careful not to touch other parts, especially the vid­eo heads. Also take care not to damage the connectors.
Shaft
Motor
Video heads
Fig.3-1c
1-10 (No.YD052)
(WR3a) <Note 2b>
NOTE
1. Insert direction of FFC WIRE as follows.
right side
electrode side
back side
supporting side
(S1a)
(S1a)
(S1a)
[1]Top cover
(S1a)
2. FFC WIRE and DRUM FPC WIRE should be insert as follows.
OK
NG
90
CN
CN
CN
3.Insert the wire to even the root of connector completely at the same time as inserting each wire.
4.Check to see that outside parts. TOP COVER,BOTTOM COVER,FRONT PANEL, etc are fixed certainly to the BOTTOM CHASSIS
5.Pay attention NOT to make any scratches on FRONT PANEL.
6.Pay close attention not to cut any
3
(S3a) Sheath of WIRE by sharp edge of CHASSIS while Wireing Process.
[3]Mechanism assembly
(S6a)
JS3001
[6]Main board assembly
<Phase alignment> .
Accord the position of V gap on R.ENCORDER and PWB silk
.
Accord the position of Boss on R.ENCORDER and PWB silk
(L2a)
j
(S2a)
j
(L2b)
j
(L2a)
j
(L2b)
(S3a)
1
j
j
f
(S3c)
TU6001
Bottom chassis
[3]Drum assembly
2
(S3b)
e
(S3e)
(S3d)
(S6a)
(S6a)
JS3001
c
c
i i
b
a
a
DVD bracket board assembly
(S3a)
(L5a)
i
i
i
(L5a)
m
[4]Bracket
(S1a)
(S1a)
(S5a)
(S5a)
(S5a)
[5]Rear cover
i
(L5a)
(L5a)
i
i
(L5a)
[4]DVD unit
(S4a)
LP*****
d
(S4a)
(S4b)
e
f
j
d
c
(S4b)
j
(S4a)
d
b
d
c
(S4b)
i i
NOTE) FFC WIRE SHOULD BE POSITIONED BELLOW CASSETTE DOOR. (FOR AVOID FFC WIRE DISTURB CASSETTE IN AND OUT.)
d
Cassette door <Note 2b>
CN7191
3
(WR2b) <Note 2a>
4
2
(WR2a) <Note 2a>
1
Switch/jack board assembly
BOTTOM SIDE
CN7003
5
TOP SIDE
(L2b)
[2]Front panel assembly
4
(L2b)
Display board assembly
3
1
2
Fig.3-1d
CN3102
Insert the bushing of POWER CORD so as not to twist the cord.
(WR3b) <Note 2b>
A/C HEAD
CN7103
CN3102
from FRONT PANEL (JACK CN7191)
CN2001
(WR3a)
(WR3a)
<Note 2b>
<Note 2b>
(WR4a) <Note 2b>
(WR4c) <Note 2b>
CN7302
CN1
CN503
back side
CN7301
Make a crease.
CN3301
right side
(WR4b) <Note 2b>
CN501
(No.YD052)1-11

3.2 Loading mechanism assembly

Projection of the tray
3.2.1 Removing the tray (See Figure 3-2a, Figure 3-2b, Figure 3-2c, Figure 3-2d, Figure 3-2e, Figure 3-2f)
(1) Push a of the slide cam on the hole in the right side of the
loading base by using a driver until it stops. (See Figure 3­2a.)
(2) The tray comes out. Pull the tray in a front direction until it
stops.
(3) Remove the two screws A attaching the slide bracket. (See
Figure 3-2b.)
(4) Tilt the tray in a direction of the arrow around the point in
the left rear part of the tray. (See Figure 3-2c.)
(5) The rail of the tray is removed from b of the loading base.
Then, remove the tray upward. (See Figure 3-2d.)
Attaching the tray:
Engage c of the loading base to the projection of the tray while tilting the tray to the left. Turn the tray in a direction of the ar­row, and attach the slide bracket. (See Figure 3-2e.)
Note:
Prior to the procedure above, move the slide cam in a direction of the arrow so that d of the slide cam can be inserted in e of the tray. (See Figure 3-2f.)
Tray
The point in the left rear part
Fig.3-2c
Tray
Push
Slide cam part a
Slide bracket
A
Fig.3-2a
Fig.3-2b
A
Loading base
Tray
Loading base part b
Rail of the tray
Fig.3-2d
Projection of the tray
Loading base part c
Fig.3-2e
Part e
1-12 (No.YD052)
Part d
Slide cam
Fig.3-2f
3.2.2 Removing the traverse mechanism assembly (See Figure 3-2g)
f
Shaft
Reverse the loading mechanism assembly. Remove the four screws B attaching the traverse mechanism assembly. Remove the traverse mechanism assembly upward.
Loading mechanism assembly
3.2.3 Removing the elevator (See Figure 3-2h and Figure 3-2j)
• Prior to the following procedure, remove the traverse mecha­nism assembly. (1) Remove the two arms of the elevator from the two parts f
by moving the arms in a direction of the arrow.
(2) Pull out the elevator in a rear direction.
Attaching the elevator:
Engage the two holes g to the two shafts on the front part of the elevator. And then, attach the elevator.
B
B
B
B
Traverse mechanism assembly
Fig.3-2g
Elevator
Part f
Fig.3-2h
g
Slide cam
Elevator
Shaft
Fig.3-2j
(No.YD052)1-13
Part
g
3.2.4 Removing the loading motor (See Figure 3-2k and Figure 3-2l)
• Prior to the following procedure, remove the tray, the traverse mechanism assembly, and the elevator. (1) Remove the belt from the pulley. (2) Remove two screws C attaching the loading motor. (3) Remove two solders h on the switch board.
Switch board
Pulley
Part h
Belt
Pulley
C
Fig.3-2k
Loading base
Slide cam
C
Loading motor

3.3 Traverse mechanism assembly

3.3.1 Removing the pickup (See Figure 3-3a, Figure 3-3b)
• Prior to the following procedure, remove the traverse mecha­nism assembly. (1) Remove one screw D attaching the plate. (2) Remove the plate and the leaf spring. (3) Lift i of the shaft 1, and pull out the shaft 1 from j. (4) Remove k of the pickup from the shaft 2.
Attaching the pickup:
(1) Engage k of the pickup to the shaft 2. (2) Insert the shaft 1 in j, and attach the shaft 1 to i. (3) Attach the leaf spring, and then attach the plate. Fix the
leaf spring and the plate by using the screw D.
Fig.3-2l
D
Leaf spring
Plate
Fig.3-3a
Shaft 2
Part k
Part j
1-14 (No.YD052)
Shaft 1
Part i
Fig.3-3b
SECTION 4
ADJUSTMENT

4.1 Before adjustment

4.1.1 Precaution
The adjustments of this unit include the mechanism com-
patibility and electrical adjustments. During the perfor­mance of this work, be sure to observe the precautions for each type of adjustment.
If there is a reference to a signal input method in the signal
column of the adjustment chart, "Ext. S-input" means the Y/C separated video signal and "Ext. input" means the composite video signal input.
Unless otherwise specified, all measuring points and
adjustment parts are located on the Main board.
4.1.2 Required test equipments
• Color (colour) television or monitor
• Oscilloscope: wide-band, dual-trace, triggered delayed sweep
• Signal generator: RF / IF sweep / marker
• Signal generator: stairstep, color (colour) bar [NTSC]
• Recording tape
• Digit-key remote controller(provided)
4.1.3 Required adjustment tools
--- : Not used
z
: Used
Mechanism
compatibility
adjustment
Roller driver
z ---
Jig RCU --- z
Back tension cassette gauge z ---
Alignment tape(MHP) z ---
Alignment tape(MHP-L) zz
Roller driver
PTU94002
Alignment tape
(SP, stairstep, NTSC)
MHP
CD-DA test disc
CTS-1000
Jig RCU
PTU94023B
Alignment tape
(EP, stairstep, NTSC)
MHP-L
Back tension cassette gauge
Electrical
adjustment
PUJ48076-2
DVD test disc
VT-501
4.1.4 Color (colour) bar signal,Color (colour) bar pattern
Color(colour) bar signal [NTSC]
White(100%)
White(75%)
100 IRE
1V
40 IRE
Horizontal sync
Yellow
Cyan
Green
Magenta
Red
QI
Blue
Color(colour) bar pattern [NTSC]
(75%)
Burst
40 IRE
White
Yellow
White
Q I Black
100%
Cyan
Green
Magenta
Red
Blue
4.1.5 Switch settings
When adjusting this unit, set the VCR mode and switches as described below.
• When using the Jig RCU, it is required to set the VCR to the Jig RCU mode (the mode in which codes from the Jig RCU can be received). (See "section 2 SPECIFIC SERVICE INSTRUC­TIONS".)
Jig RCU
[Data transmitting method] Depress the " "( 3 ) button after the data code is set.
CUSTOM CODE 43: A CODE
DATA CODE
INITIAL MODE
Fig.4-1 Jig RCU [PTU94023B]
• Set the switches as shown below unless otherwise specified on the relevant adjustment chart. The switches that are not list­ed below can be set as desired. If the VCR is not equipped with the functions detailed below, setup is not required.
AUTO PICTURE/VIDEO CALIBRATION/ B.E.S.T./D.S.P.C.
PICTURE CONTROL/SMART PICTURE NORMAL/NATURAL VIDEO STABILIZER OFF TBC ON Digital 3R ON VIDEO NAVIGATION/TAPE MANAGER OFF BLUE BACK OFF
OFF
4.1.6 Manual tracking mode (Auto tracking ON/OFF) set-
ting
(1) In order to set to the manual tracking mode during tape
playback, press the "TRACKING + and -" button at the same time on the remote control unit.
• Each press of the button switches the auto tracking ON or OFF.
• When the manual tracking mode is set, the tracking is placed at the center position.
(2) Press "TRACKING +/-" to adjust the tracking manually.
(No.YD052)1-15

4.2 Mechanism compatibility adjustment (VHS SECTION)

Notes:
Although compatibility adjustment is very important, it
is not necessary to perform this as part of the normal servicing work. It will be required when you have re­placed the A/C head, drum assembly or any part of the tape transport system.
To prevent damaging the alignment tape in the compat-
ibility adjustment, prepare a cassette tape (for self-re­cording/playback), perform a test on it by transporting it and making sure that the tape is not bent by the tape transport mechanisms such as in the guide rollers.(See Fig.4-2b.)
4.2.1 Tension pole position
Notes:
This adjustment must be performed every time the ten-
sion band is replaced.
Signal (A) • Back tension cassette gauge [PUJ48076-2]
Mode (B1)
Adjustment part (F) • Adjust pin [Mechansim assembly]
Specified value (G)
•PB
(B2)
• Eject end
25 - 51 gf•cm (2.45 - 5 x 10
-3
Nm)
(1) Play back the back tension cassette gauge (A). (2) Check that the indicated value on the left side gauge is
within the specified value (G).
(3) If the indicated value is not within the specified value (G),
perform the adjustment in a following procedure.(See Fig.4-2a.)
a) Remove the top frame, cassette holder and side
frames (L/R) all together. (Refer to the SERVICE MANUAL No.86700 [MECHANISM ASSEMBLY].)
b) Rotate the loading motor gear to move the control
plate so that the triangular stamping to the left of the “P”stamping is aligned with the stamping (a) on the main deck. This positioning is mode (B1).
c) Adjust by turning the adjustment pin so that the tip of
the tension arm is aligned with the stamping (b) on the main deck.
d) Rotate the reel disk (S) by about one turn clockwise
and make sure that the round hole of the adjustment pin is located in the "OK" range. If it is outside this
range, restart the adjustment from the beginning. After completion of the adjustment, rotate the loading gear motor to return it to the mode (B2) position.
4.2.2 FM waveform linearity
Signal (A1)
Mode (B) • PB Equipment (C) • Oscilloscope Measuring point (D) • TP106 (PB. FM) External trigger (E) • TP111 (D.FF) Adjustment part (F) • Guide roller [Mechanism assembly] Specified value (G) • Flat V.PB FM waveform Adjustment tool (H) • Roller driver [PTU94002]
• Alignment tape(SP, stairstep, NTSC) [MHP]
(A2)
• Alignment tape(EP,stairstep,NTSC) [MHP-L]
(1) Play back the alignment tape (A1). (2) Apply the external trigger signal to D.FF (E), to observe
the V.PB FM waveform at the measuring point (D). (3) Set the VCR to the manual tracking mode. (4) Make sure that there is no significant level drop of the V.PB
FM waveform caused by the tracking operation, with its
generally parallel and linear variation ensured. Perform the
following adjustments when required. (See Fig. 4-2c.) (5) Reduce the V.PB FM waveform by the tracking operation.
If a drop in level is found on the left side, turn the guide roll-
er of the pole base assembly (supply side) with the roller
driver to make the V.PB FM waveform linear.
If a drop in level is on the right side, likewise turn the guide
roller of the pole base assembly (take-up side) with the
roller driver to make it linear. (See Fig. 4-2c.) (6) Make sure that the V.PB FM waveform varies in parallel
and linearly with the tracking operation again. When re-
quired, perform fine-adjustment of the guide roller of the
pole base assembly (supply or take-up side). (7) Unload the cassette tape once, play back the alignment
tape (A1) again and confirm the V.PB FM waveform. (8) After adjustment, confirm that the tape wrinkling does not
occur at the roller upper or lower limits. (See Fig. 4-2b.)
[Perform adjustment step (9) only for the models equipped
with SP mode and EP (or LP) mode.]
[Perform adjustment step (9) only for the models
equipped with SP mode and EP (or LP) mode.]
(9) Repeat steps (1) to (8) by using the alignment tape (A2).
Improper
(a)
GUIDE ROLLER
Proper
TENSION ARM
Stamping(b)
OK
ADJUST PIN
1-16 (No.YD052)
NG
Fig.4-2a
CONTROL PLATE
Stamping(a)
(b)
GUIDE POLE
Fig.4-2b
Proper waveform variation
Improper waveform variation
A
C
Up Down
B
D
Roller driver
Guide roller (supply side)
Fig.4-2c
4.2.3 Height and tilt of the A/C head
Note:
Set a temporary level of the height of the A/C head in ad-
vance to make the adjustment easier after the A/C head has been replaced. (Refer to the SERVICE MANUAL No.86700 [MECHANISM ASSEMBLY].)
Signal (A) • Alignment tape(SP, stairstep, NTSC) [MHP] Mode (B) • PB Equipment (C) • Oscilloscope Measuring point (D1)
External trigger (E) • TP111 (D.FF) Adjustment part (F) • A/C head [Mechanism assembly] Specified value (G) • Maximum waveform
• TP106 (PB. FM)
(D2)
• TP4001 (CTL. P)
(1) Play back the alignment tape (A). (2) Apply the external trigger signal to D.FF (E), to observe the
AUDIO OUT waveform and Control pulse waveform at the
measuring points (D1) and (D2) in the ALT mode. (3) Set the VCR to the manual tracking mode. (4) Adjust the AUDIO OUT waveform and Control pulse wave-
form by turning the screws (1), (2) and (3) little by little until
both waveforms reach maximum. The screw (1)
and (3) are for adjustment of tilt and the screw (2) for azi-
muth.
Head base
(2)
(1)
AUDIO OUT
4.2.4 A/C head phase (X-value)
Signal (A1)
Mode (B) • PB Equipment (C) • Oscilloscope Measuring point (D) • TP106 (PB. FM) External trigger (E) • TP111 (D.FF) Adjustment part (F) • A/C head base [Mechanism assembly] Specified value (G) • Flat V.PB FM waveform Adjustment tool (H) • Roller driver [PTU94002]
• Alignment tape(SP, stairstep, NTSC) [MHP]
(A2)
• Alignment tape(EP,stairstep,NTSC) [MHP-L]
(1) Play back the alignment tape (A1). (2) Apply the external trigger signal to D.FF (E), to observe the
V.PB FM waveform at the measuring point (D). (3) Set the VCR to the manual tracking mode. (4) Loosen the screws (4) and (5), then set the Roller driver to
the innermost projected part of the A/C head. (See Fig. 4-
2e.) (5) Rotate the roller driver so that the A/C head comes closest
to the capstan. From there, move the A/C head back grad-
ually toward the drum until the point where the FM wave-
form is maximized for the second time, and then
tighten the screws (4) and (5) temporarily. (6) Play an alignment tape (A2) and set to the manual-tracking
mode. (7) Fine-adjust A/C head base position to maximize the FM
waveform, and then tighten the screws (4) and (5) firmly. (8) Play alignment tapes (A1) and (A2) and confirm that the FM
waveforms are maximized when the tracking is at the cen-
ter position.
To the drum
Toward the capstan
Toward the drum
A/C head
Screw (5)
Roller driver
Screw (4)
Head base
To the capstan
Fig.4-2e
Alignment tape [SP, stairstep] played with the SP head
Waveform output
X-value adjustment point
Drum side Control head position Capstan side
Alignment tape [EP(LP), stairstep] played with the EP(LP) head
A/C head
(3)
Fig.4-2d
CTL. P
Maximum
Fig.4-2f
(No.YD052)1-17

4.3 Electrical adjustment (VHS SECTION)

Note:
The following adjustment procedures are not only necessary after replacement of consumable mechanical parts or board assemblies, but are also provided as references to be referred to when servicing the electrical circuitry. In case of trouble with the electrical circuitry, always begin a service by identifying the defective points by using the measur­ing instruments as described in the following electrical adjust­ment procedures. After this, proceed to the repair, replacement and/or adjustment. If the required measuring in­struments are not available in the field, do not change the ad­justment parts (variable resistor, etc.) carelessly.
4.3.1 Servo circuit
4.3.1.1 Switching point
Signal (A1)
Mode (B) • PB Equipment (C) • Oscilloscope Measuring point (D) • VIDEO OUT terminal (75 ohm terminated)
External trigger (E) • TP111 (D.FF) Adjustment part (F) • Jig RCU: Code “43-5A” Specified value (G) • 6.5 ± 0.5H Adjustment tool (H) • Jig RCU [PTU94023B]
• Stairstep signal
(A2)
• Alignment tape(EP,stairstep,NTSC) [MHP-L]
• TP106 (PB. FM)
(1) Play back the signal (A1) of the alignment tape (A2). (2) Apply the external trigger signal to D.FF (E) to observe the
VIDEO OUT waveform and V.PB FM waveform at the
measuring points (D1) and (D2). (3) Set the VCR to the manual tracking mode. (4) Adjust tracking so that the V.PB FM waveform becomes
maximum. (5) Set the VCR to the Auto adjust mode by transmitting the
code (F) from the Jig RCU. When the VCR enters the stop
mode, the adjustment is completed. (6) If the VCR enters the eject mode, repeat steps (1) to (5)
again. (7) Play back the alignment tape (A2) again, confirm that the
switching point is the specified value (G).
4.3.1.2 Slow tracking preset
Signal (A1)
Mode (B1)
Measuring point (D) • TV-Monitor Adjustment part (F) • Jig RCU: Code “43-71”or “43-72” Specified value (G) • minimum noise Adjustment tool (H) • Jig RCU [PTU94023B]
• Ext. input
(A2)
• Color (colour) bar signal [NTSC]
• VHS SP
(B2)
•VHS EP
(1) Record the signal (A2) in the mode (B1), and play back
the recorded signal. (2) Set the VCR to the manual tracking mode. (3) Set the VCR to the FWD slow (+1/6x) mode. (4) Transmit the code (F) from the Jig RCU to adjust so that the
noise bar becomes the specified value (G) on the TV
monitor in the slow mode. (5) Set the VCR to the Stop mode. (6) Confirm that the noise bar is (G) on the TV monitor in the
slow mode. (7) Repeat steps (3) to (6) in the REV slow (+1/6x) mode. (8) Repeat steps (1) to (7) in the mode (B2).
Note:
For FWD slow (+1/6x) playback, transmit the code "43-
08" from the Jig RCU to enter the slow playback mode, and transmit the code "43-D0" for REV slow (-1/6x) mode.
Trigger point
1-18 (No.YD052)
Switching point
V.sync
V. rate
Fig.4-3a Switching point

4.4 Electrical adjustment (DVD SECTION)

r
4.4.1 Test mode setting method
(1) Press POWER button to turn off the unit.
(2) Press the following remocon keys continuously within 2seconds " SET UP " " 2 " " 8 " " ENTER ".
(3) The unit becomes JIG RCU mode. (4) Press POWER button then press VCR/DVD repeatedly so that the DVD indicator lights up on the front display panel. (5) Press the POWER button again to turn off the unit. (6) Transmit the code " 43-FA " from the Jig RCU. (7) The power supply of the unit turns on automatically then the FDP shows the region number. (8) Each pressing of DISPLAY button of the remote controller in test mode as follows. (9) To release test mode, press POWER key of the front panel.
FDP(Example)
Becames test mode
VCR
(Region number)
Optimize Front End paramete
4.4.2 Method of displayed version of firmware
(1) Set the unit to the test mode. (2) The version number is displayed in the monitor screen.
OPENING DISPLAY
**_Ver.****_HS/HR_XVC29/*******
Version of firmware
Destination
CD Laser
DVD Laser
Others
Model name
(No.YD052)1-19
4.4.3 Initialization method
Please initialize according to the following procedures in the following case:
• Just after you upgrade the firmware.
• After you confirm the symptoms that a customer points out. First Initialize, and then confirm whether the symptoms are improved or not.
• After servicing, before returning the main body to a customer. (Initialized unit should be returned to a customer.) (1) Set the unit to the test mode. (2) Press PAUSE key of the remote controller or transmit the code "43-6F" from the Jig RCU. (3) When initialization is completed, the PLAY (). mark is indicated in the FDP.
4.4.4 All-initialization method
Please perform all-initialization according to the following procedures in the following case:
• Just after you exchange the pick-up.
• Just after you exchange the spindle motor.
• Just after you exchange the traverse mechanism base.
NOTE:
Please perform all-initialization when you exchange the parts above and also when you remove the parts above. (1) Set the unit to the test mode. (2) Press the REVERSE SKIP/INDEX () key of the remote controller for more than 2 seconds. (3) When initialization is completed, the PLAY (). mark is indicated in the FDP.
NOTE:
After all-initialization, be sure to perform optimization adjustment of Front End parameter.
4.4.5 Optimization adjustment of Front End parameter
Adjustment to optimize Front End parameter must be performed in each mechanism assembly of this model for high-speed start­ing.Please perform optimization according to the following procedures just after all-initialization is completed and when FDP shows anything except "0" (For example when FDP shows "1", "2", and "3") at test mode.
(1) Set the unit to the test mode. (2) The FDP shows the region number first. (3) Press the DISPLAY key of the remote controller and check that FDP shows the number. (4) Press the DISPLAY key again to return the region number.
NOTE:
Status of this adjustment can be judged by the number displayed at test mode as follows:
DVD adjustment CD adjustment FDP at test mode
Adjusted Adjusted 0
Not adjusted Adjusted 1
Adjusted Not adjusted 2
Not adjusted Not adjusted 3
NOTE:
As for a disc used for adjustment,
• Disc should be mounted. ("Mounting" means to display "READ" after the disc is inserted and then display the disc informa­tion.) Disc need not be played.
• If you do not have test disc either VT-501 (DVD) or CTS-1000 (CD-DA), use a commercial disc (for DVD, dual-layer soft­ware) after seeing and checking that the disc is neither curved nor foreseen that it may shake at the time of playback.If you use a disc with bad features, starting time may be slow or disc may not be read.
1-20 (No.YD052)
4.4.6 Upgrading of firmware
• Firmware update disc supports CD-R media.
• When firmware update is necessary, information is available from the homepage of DIGITAL VIDEO STORAGE CATEGORY, CS group.
4.4.6.1 Creating an update disc
Please check the details of the update disc creation method by JS-NET.
(1) Down load the update file from JS-NET. (2) Write the update file into CD-R. Pay attention in the following points when writing the update disc.
• Make sure to write in "Disc at Once".
• Set the file compatibility to "ISO9660 format".
4.4.6.2 Update procedure
(1) Turn the power ON. Load the update disc on the tray and close the tray. (2) Update of the firmware starts automatically then upgrading status is displayed in the monitor screen. (3) The tray opens automatically. Remove the upgrade disc. (4) Close the tray then press the POWER button to turn off the unit. (5) Confirm the version of the firmware.in the test mode.
MONITOR(Example)
VERSION UP DISC PROGRAM&DESTINATION MODE CURRENT VERSION 0494(or0495) NEW VERSION 0496
READING....
SECTOR
**
NUMBER KEYS
SET UP
REVERSE SKIP/INDEX
ENTER DISPLAY
PAU SE
(No.YD052)1-21
SECTION 5
TROUBLESHOOTING

5.1 Manually removing the cassette tape

If you cannot remove the cassette tape which is loaded because of any electrical or mechanical failures, manually remove it by taking the following steps.
(1) Unplug the power cord plug from the power outlet. (2) Refer to the disassembly procedure of the VCR and per-
form the disassembly of the major parts before removing the mechanism assembly. (See Fig. 5-1a)
Fig.5-1a
Tension arm assembly
Pole base assembly
Pinch roller arm assembly
(3) Unload the pole base assembly by manually turning the
gear of the loading motor until the pole base assembly is hidden behind the cassette lid. In doing so, hold the tape by the hand to keep the slack away from any grease. (See Fig.5-1b )
In case of mechanical failures, while keeping the ten­sion arm assembly free from tension, pull out the tape on the pole base assembly. Take the spring(a) of the pinch roller arm assembly off the hook, and detach it from the tape.
(4) Remove the screw (a) of the side frame (L/R). (5) Hold the slack tape and cassette cover together, lift the
cassette tape, top frame, cassette holder and side frames (L, R) together from the rear and remove them by dis-en­gaging the hooks (a) and (b).
Screw(a)
Cassette tape
Hook(a)
Cassette holder
Top frame
Side frame(R)
Screw(a)
Spring(a)
Direction of unloading
Fig.5-1b
Side frame(L)
Hook(b)
Fig.5-1c
(6) Take up the slack of the tape into the cassette. This com-
pletes removal of the cassette tape.

5.2 Manually removing the disk(DVD/CD)

If you cannot remove the disk which is loaded because of any electrical or mechanical failures, manually remove it by taking the following steps.
(1) Unplug the power cord plug from the power outlet. (2) Remove the top cover and front panel assembly.
(Refer to the disassembly procedure and perform the dis­assembly of the major parts before removing)
(3) Turn the Middle gear (a) by hand to open the disk tray.(See
Fig. 5-2a)
DVD unit
Middle gear (a)
1-22 (No.YD052)
Unloading
Fig.5-2a

5.3 Emergency display function (VHS SECTION)

This unit saves details of the last two emergencies as the EMG history and allows the status of the VCR and the mechanism of each emergency to be shown both on the display and as OSD in­formation. When using the emergency function, it is required to set the VCR to the Jig RCU mode.
Jig RCU
[Data transmitting method] Depress the " " ( 3 ) button after the data code is set.
CUSTOM CODE 43: A CODE
DATA CODE
INITIAL MODE
Fig.5-3a Jig RCU [PTU94023B]
5.3.1 Displaying the EMG information
The EMG detail of information can be displayed by transmitting the code "43-59" from the Jig RCU.
Note:
Press VCR/DVD repeatedly so that the VHS indicator
lights up on the front display panel.
The EMG detail information <1><2> show the informa-
tion on the latest EMG. It becomes “ - - : - - : - - ” when there is no latest EMG record.
0: 00
E: **
1E: **
1: *1
2: *2
3: 34
4: *5
5: *6
6: *7
7: *8
8: *9
9: *1 0
Normal display
EMG content display (Latest) See 5.3.4
EMG content display (Previous) See 5.3.4
EMG detail information <1> See 5.3.5 [Deck operation mode] EMG detail information <1> See 5.3.5 [Mechanism operation mode] EMG detail information <1> See 5.3.5 [Mechanism sensor information and Mechanism mode position] EMG detail information <2> See 5.3.6 [Type of the cassette tape in use <1>] EMG detail information <2> See 5.3.6 [Winding position of the cassette tape in use] EMG detail information <2> See 5.3.6 [Type of the cassette tape in use <2> (Winding area)] EMG detail information <3> See 5.3.7 [Previous deck operation mode] EMG detail information <3> See 5.3.7 [The deck operation mode of the one before the last] EMG detail information <3> See 5.3.7
[The deck operation mode of the one prior to one above]
EMG display of 7 FDP display model
Fig.5-3b
EMG display of FDP display mode
(1) Transmit the code “43-59” from the Jig RCU.
The FDP shows the EMG content in the form of “E:**:**”.
<Example 1> E : 01
Latest EMG
<Example 2> E : - -
No EMG record
(2) Transmit the code “43-59” from the Jig RCU again.
The FDP shows the EMG detail information <1> in the form of “ *1: *2 : 34 ”.
*1 : Deck operation mode at the moment of EMG *2 : Mechanism operation mode at the moment of EMG 3- : Mechanism sensor information at the moment of EMG
-4 : Mechanism mode position at the moment of EMG
(3) Transmit the code “43-59” from the Jig RCU once again.
The FDP shows the EMG detail information <2> in the form of “ *5 : *6 : *7 ”.
*5 : Type of the cassette tape in use <1> . *6 : Winding position of the cassette tape in use *7 : Type of the cassette tape in use <2> (Winding area)
(4) Transmit the code “43-59” from the Jig RCU once again.
The FDP shows the EMG detail information <3> in the form of “*8 : *9 : *10”.
*8 : Previous deck operation mode at the moment of EMG *9 : The deck operation mode of the one before the last at
the moment of EMG
*10: The deck operation mode of the one prior to one
above at the moment of EMG
(5) Transmit the code “43-59” from the Jig RCU once again to
reset the display.
(No.YD052)1-23
5.3.2 Clearing the EMG history
(1) Display the EMG history. (2) Transmit the code “43-36” from the Jig RCU. (3) Reset the EMG display.
5.3.3 Details of the OSD display in the EMG display mode
During the EMG display, the OSD shows the data on the deck mode, etc. The details of the display contents are as follows.
Notes:
The display is variable depending on the part No. of the
System Control microcomputer (IC3001) built into the VCR. In the following, refer to the figure carrying the same two characters as the top two characters of the part number of your IC.
The sensor information in the OSD display contents is
partially different from the mechanism sensor informa­tion in EMG detail information <1>.
[For MN* only]
AA BB CC DD EE
FF GG HH I I J J
KK LL MM NN OO
PP QQ RR SS TT
UU VV WW XX YY
AA : Deck operation mode (See EMG detail information <1>.) BB : Mechanism operation mode
(See EMG detail of information <1>.) CC : Mechanism transition flag DD : Capstan motor control status EE : Loading motor control status FF : Sensor information (See sensor information details.) GG : Capstan motor speed HH : Key code (JVC code) I I : Supply reel winding diameter data higher 8 bits. JJ : Supply reel winding diameter data lower 8 bits. KK : Mechanism sensor information & mechanism mode posi-
tion(See EMG detail of information <1>.) LL : Tape speed data higher 8 bits. MM : Tape speed data lower 8 bits. NN : Cassette tape type <2> higher 8 bits.
(See EMG detail of information <2>.) OO : Cassette tape type <2> lower 8 bits.
(See EMG detail of information <2>.) PP : General data display area
YY : General data display area
*FF:Sensor information details
<Display>
** h
********
Encoder data
(See Mechanism mode sequence.) Cassette tab present = 1 Cassette tab broken = 0
Cassette absent = 1 Cassette present = 0
Start sensor
End sensor
[For *HD only]
AA BB CC
DD EE FF
GGGG HHHH
I I JJJJ
KKKK LLLL MMMM
ROM No.
AA : Key code (JVC code) BB : Deck operation mode(See EMG detail information
<1>.)
CC : Mechanism operation mode (See EMG detail informa-
tion <1>.) DD : Sensor information (See sensor information details.) EE : Capstan motor speed (Search, double speed) FF : Tracking value GGGG : Cassette tape type <2>, 16 bits.
(See EMG detail information <2>.) HHHH : Supply reel winding diameter data I I : Capstan motor speed (FF/REW, double speed) JJJJ : Tape speed data, lower 8 bits. KKKK : General data display area LLLL : General data display area MMMM : General data display area
*DD:Sensor information details
<Display>
** h
********
Encoder data (See Mechanism mode sequence.)
Remote pause
End sensor
Start sensor
Cassette tab present = 1 Cassette tab broken = 0
[For both MN*/HD*]
Mechanism mode sequence
Mechanism mode - Encoder data
LSA
12345
1110
GND
LSA
LSB
LSC
LSD
No. Position Encoder data
21
Encoder output = Low
or
Trerminal - GND = SHORT
1 2 3 4 5 6 7 8 9 10 11 12
EJECT 0 h = 0000 EJECT1 1 h = 0001 EJECT2 2 h = 0010
ULSTOP 3 h = 0011
UPPER 4 h = 0100
ONSTOP(PLAY) 5 h = 0101
FWD/SS 6 h = 0110
REV/SS 7 h = 0111
OFFSTOP 8 h = 1000
FFREW-BRAKE 9 h = 1001
FFREW A h = 1010
MIDDLE F h = 1111
543
Encoder output = High
or
Trerminal - GND = OPEN
LSD
9876
LSC
LSB
1-24 (No.YD052)
5.3.4 EMG content description
Note:
EMG contents “E09” are for the model with Dynamic Drum (DD).
FDP CONTENT CAUSE
E01: Loading EMG
E02:
Unloading EMG
E03: Take Up Reel
Pulse EMG
E04: Drum FG EMG
E05: Cassette Eject
EMG
E06: Capstan FG
EMG
E07: SW Power
Short-Circuit EMG
E08:
DVD EMG
E09: DD FG EMG
E0A: Supply Reel
Pulse EMG
EU1: Head clog warning history
If the mechanism mode does not change to the next mode within 4 sec­onds after the loading motor starts rotating in the loading direction, while the mechanism is in the after-loading position (with the tape up against the pole base), [E:01] is identified and the power is switched OFF. However, if the tape loading is not completed within 4 seconds after the loading motor starts rotating in the loading direction, the tape is simply unloaded and ejected. No EMG data is recorded in this case.
When the mechanism mode cannot be changed to another mode even when the loading motor has rotated for more than 4 sec­onds in the unloading direction, [E:02] is identified and the power is turned off.
When the falling edje of the take-up reel pulse has not been gen­erated for more than 4 seconds in the capstan rotating mode, [E:03] is identified, the pinch rollers are turned off and stopped, and the power is turned off. In this case, however, the mecha­nism should be in position after tape loading. Note that the reel EMG is not detected during Slow/Frame advance operations.
When the drum FG pulse has not been input for more than 3 sec­onds in the drum rotating mode, [E:04] is identified, the pinch roll­ers are turned off and stopped, and the power is turned off.
If the cassette does not reach the eject position within about 0.7 seconds after the cassette housing has started the cassette ejec­tion operation, [E:05] is identified, the drive direction is reversed to load the tape, the mode is switched to STOP mode with the pinch roller OFF, and the power is switched OFF. During the cassette insertion process, the drive direction is reversed and the cassette is ejected if the tape is not up against the pole base within about 3 seconds after the start of the cassette pulling­in operation. If the cassette does not reach the eject position within about 0.7 seconds after the drive mode reversal operation, [E:05] is identified and the power is switched OFF immediately.
When the capstan FG pulse has not been generated for more than 1 second in the capstan rotating mode, [E:06] is identified, the pinch rollers are turned off and stopped, and the power is turned off.However, the capstan EMG is not detected in SLOW/ STILL modes. Note that, if the part number of the System Control IC begins with "MN" or "M3", the capstan EMG is not detected even during the FF/REW operation.
When short-circuiting of the SW power supply with GND has lasted for 0.5 second or more, [E:07] is identified, all the motors are stopped and the power is turned off.
When communication with a system computer of VHS side is not carried out because of the defective DVD unit, or when the DVD unit must be reset
When the DD FG pulse is not generated within 2.5 seconds, [E:09] is identified, the tilt motor is stopped and the power is turned off.
When the falling edge of the supply reel pulse has not been gen­erated for more than 10 seconds in the capstan rotating mode, [E:0A] is identified and the cassette is ejected (but the power is not turned off). In this case, however, the mechanism should be in the position after tape loading (with the tape up against the pole base). Also note that the reel EMG is not detected during Slow/ Frame advance operations.
Presupposing the presence of the control pulse output in the PLAY mode, when the value obtained by mixing the two V.FM output channels (without regard to the A.FM output) has remained below a certain threshold level for more than 10 seconds, [E:U1] is identified and recorded in the emergency history. During the period in which the head clog is detected, the FDP shows "U:01" and the OSD repeats the "3 seconds of warning display" and the "7 seconds of noise picture display" alternately.
EMG code : "E:C1" or "E:U1" / FDP : "U:01" / OSD : "Try cleaning tape." or "Use cleaning cassette." The head clog warning is reset when the above-mentioned threshold has been exceeded for more than 2 seconds or the mode is changed to another mode than PLAY.
1. The mechanism is locked in the middle of the mode transition during a tape loading operation. The mechanism overruns during the tape loading operation because the SYSCON cannot recognize
2. the mechanism mode normally. This problem is due to a cause such as a rotary encoder failure.
3.
Power is not supplied to the loading MDA. (M12V/Vcc/Vref/ICP are disconnected in the middle.)
1.
The mechanism is locked in the middle of mode transition.
2.
Without an eject signal being sent from the SYSCON, unloading is attempted (i.e. Ejection is attempted while the tape is still inside the mechanism.) because the SYSCON cannot recognize the mechanism mode normally. This is due to a cause such as a rotary encoder failure. (Mechanism position: UPPER)
3.
Power is not supplied to the loading MDA. (M12V/Vcc/Vref/ICP are disconnected in the middle.)
1.
The take-up reel pulse is not generated in the FWD transport modes (PLAY/FWD SEARCH/FF, etc.) because;
1) The idler gear is not meshed with the take-up reel gear because the mechanism mal-functions for
2)
3) The reel is rotating normally but an FG pulse is not generated due to the take-up reel sensor failure.
2.
The supply reel pulse is not generated in the REV transport modes (REV SEARCH/REW, etc.) because;
1) The idler gear is not meshed with the supply reel gear because the mechanism mal-functions for
2) The idler gear is meshed with the supply reel gear, but incapable of winding due to too large a
3) The reel rotates normally but the FG pulse is not generated due to a supply reel sensor failure.
3.
Power(SW5V) is not supplied to the reel sensor on the tape winding side.
1.
The drum could not start or the drum rotation has stopped due to too large a load on the tape, because;
1) The tape tension is abnormally high;
2) The tape is damaged or a foreign object (grease, etc.) adheres to the tape.
2.
The drum FG pulse did not reach the System controller CPU because;
1) The signal circuit is disconnected in the middle;
2) The FG pulse generator (hall device) of the drum is faulty.
3.
The drum control voltage (DRUM CTL V) is not supplied to the MDA.
4.
Power (M12V) is not supplied to the drum MDA.
1.
The cassette cannot be ejected due to a failure in the drive mechanism of the housing.
2.
When the housing load increases during ejection, the loading motor is stopped because of lack of headroom in its drive torque.
3.
The sensor/switch for detecting the end of ejection are not functioning normally.
4.
The loading motor drive voltage is lower than specified or power (M12V) is not supplied to the motor (MDA).
5.
When the user attempted to eject a cassette, a foreign object (or perhaps the user's hand) was caught in the opening of the housing.
1.
The capstan could not start or the capstan rotation has stopped due to too large a load on the tape, because;
1) The tape tension is abnormally high (mechanical lock);
2) The tape is damaged or a foreign object (grease, etc.) is adhered to the tape (occurrence of tape
2.
The capstan FG pulse did not reach the System controller CPU because;
1) The signal circuit is disconnected in the middle;
2) The FG pulse generator (MR device) of the capstans is faulty.
3.
The capstan control voltage (CAPSTAN CTL V) is not supplied to the MDA.
4.
Power (M12V, SW5V) are not supplied to the capstan MDA.
1.
The SW 5 V power supply circuit is shorted with GND.
2.
The SW 12 V power supply circuit is shorted with GND.
1. The DVD unit is defective.
2. Contact failure of the wires in the DVD unit or VHS side.
1. The FG sensor is defective. (The soldered parts have separated.)
2. The pull-up resistor at the FG sensor output is defective. (The soldered parts have separated.)
3. Contact failure or soldering failure of the pins of the connector (board-to-board) to the FG sensor.
4. The power (5V) to the sensor is not supplied. (Connection failure/soldering failure)
5. The FG pulse is not sent to the System Controller CPU. The tilt motor is defective. (The soldered parts have separated.)
6.
7. The drive power to the tilt motor is not supplied. (Connection failure/soldering failure)
8. The tilt motor drive MDA - IC is defective.
9. Auto-recovery of the DD tilting cannot take place due to overrun.
1.
The supply reel pulse is not generated in the FWD transport mode (PLAY/FWD SEARCH/FF, etc.) because;
1) PLAY/FWD or SEARCH/FF is started while the tape in the inserted cassette is cut in the middle;
2) A mechanical factor caused tape slack inside and outside the supply reel side of the cassette shell.
3) The reel is rotating normally but the FG pulse is not generated due to a supply reel sensor failure.
2.
The take-up reel pulse is not generated in the REV transport mode (REV SEARCH/REW, etc.).
1) REV SEARCH/REW is started when the tape in the inserted cassette has been cut in the middle;
2) A mechanical factor caused tape slack inside and outside the take-up reel side of the cassette
3) The reel is rotating normally but the FG pulse is not generated due to a take-up reel sensor failure.
3.
The power (SW 5V) to a reel sensor is not supplied.
some reason. The idler gear is meshed with the take-up reel gear, but incapable of winding due to too large mechanical load (abnormal tension);
some reason.
mechanical load (abnormal tension);
Housing load increasing factors: Temperature environment (low temperature, etc.), mechanism wear or failure.
entangling, etc.).
In this case, the supply reel will not rotate until the tape slack is removed by the FWD transport, so the pulse is not generated until then;
shell. In this case, the take up will not rotate until the tape slack is removed by the REV transport, so the pulse will not be generated until that time;
(No.YD052)1-25
5.3.5 EMG detail information <1>
The status (electrical operation mode) of the VCR and the status (mechanism operation mode/sensor information) of the mecha­nism in the latest EMG can be confirmed based on the figure in EMG detail information <1> .
[FDP/OSD display] *1 : *2 : 34 *1 : Deck operation mode at the moment of EMG
*2 : Mechanism operation mode at the moment of EMG 3- : Mechanism sensor information at the moment of EMG
-4 : Mechanism mode position at the moment of EMG
Note:
For EMG detailed information <1>, the content of the
code that is shown on the display (or OSD) differs de­pending on the parts number of the system control mi­croprocessor (IC3001) of the VCR. The system control microprocessor parts number starts with two letters, re­fer these to the corresponding table.
*1 : Deck operation mode
[Common table of MN* and HD]
Display
MN* HD*
00 - Mechanism being initialized 01 00 STOP with pinch roller pressure off (or tape present with P.OFF) 02 01 STOP with pinch roller pressure on 03 - POWER OFF as a result of EMG
04 04 PLAY (Normal playback) 0C 0E REC 10 11 Cassette ejected 20 22 FF 21 - Tape fully loaded, START sensor ON, short FF 22 -
24 26 FWD SEARCH (variable speed) including x2-speed 2C 2E INSERT REC 40 43 REW 42 - Cassette identification REV SEARCH before transition to REW
44 47 REV SEARCH (variable speed) 4C 4C AUDIO DUB 6C 6E INSERT REC (VIDEO + AUDIO) 84 84 FWD STILL / SLOW 85 85 REV STILL / SLOW 8C 8F REC PAUSE 8D - Back spacing 8E - Forward spacing (FWD transport mode with BEST function) AC AF INSERT REC PAUSE AD - INSERT REC back spacing CC CD AUDIO DUB PAUSE CD - AUDIO DUB back spacing EC EF INSERT REC (VIDEO + AUDIO) PAUSE ED - INSERT REC (VIDEO + AUDIO) back spacing
Cassette identification FWD SEARCH before transition to FF (SPx7-speed)
(SPx7-speed)
Deck operation mode
*2 : Mechanism operation mode
[Table of MN*]
Display
00 Command standby (No command to be executed) 01 Immediate Power OFF after EMG occurrence 02 Loading from an intermediate position during mechanism initialization 03 Unloading due to EMG occurrence during mechanism initialization 04 Ejecting cassette (ULSTOP to EJECT) 05 Inserting cassette (EJECT to ULSTOP) 06 Loading tape (ULSTOP to PLAY) 07 Unloading tape (PLAY to ULSTOP) 08 Transition from pinch roller ON to STOP 09 Transition from pinch roller OFF to STOP (PLAY to OFFSTOP) 0A Transition from pinch roller OFF to STOP at power OFF 0B Transition from pinch roller ON to STOP at power ON 0C Transition to PLAY 0D Transition to Search FF 0E Transition to REC 0F Transition to FWD STILL/SLOW 10 Transition to REV STILL/SLOW 11 Transition to Search REV 12 Transition from FF/REW to STOP 13 Transition to FF 14 Transition to REW 15 Tape end detection processing during loading 16 Short FWD/REV at tape sensor ON during unloading 17 Transition to FF/REW brake mode
Mechanism operation mode
[Table of HD*]
Display
00 STOP with pinch roller pressure off 01 STOP with pinch roller pressure on 02 U/L STOP (or tape being loaded) 04 PLAY (Normal playback) 05 PLAY (x1-speed playback using JOG) 0E REC 11 Cassette ejected 22 FF 26 FWD SEARCH (variable speed) including x2-speed 2E INSERT REC 43 REW 47 REV SEARCH 4C AUDIO DUB 6E INSERT REC (VIDEO + AUDIO) 84 FWD STILL/SLOW 85 REV STILL/SLOW 8F REC PAUSE AF INSERT REC PAUSE C7 REV SEARCH (x1-speed reverse playback using JOG) CD AUDIO DUB PAUSE EF INSERT REC (VIDEO + AUDIO) PAUSE F0 Mechanism being initialized F1 POWER OFF as a result of EMG F2 Cassette being inserted F3 Cassette being ejected F4 Transition from STOP with pinch roller pressure on to STOP with pinch
roller pressure off F5 Transition from STOP with pinch roller pressure on to PLAY F6 Transition from STOP with pinch roller pressure on to REC F7 Cassette type detection SEARCH before FF/REW is being executed F8 Tape being unloaded F9 Transition from STOP with pinch roller pressure off to STOP with pinch
roller pressure on FA Transition from STOP with pinch roller pressure off to FF/REW FB Transition from STOP with pinch roller pressure off to REC.P (T.REC,etc.) FC Transition from STOP with pinch roller pressure off to cassette type
detection SEARCH FD Short REV being executed after END sensor on during unloading FE Tension loosening being executed after tape loading (STOP with pinch
roller pressure on)
FF Tape being unloaded
Mechanism operation mode
1-26 (No.YD052)
3- : Mechanism sensor information
[Common table of MN* and HD*]
Display
REC safety SW
0- Tab broken ON ON ON 1- Tab broken ON 2- Tab broken ON 3- Tab broken ON OFF 4- Tab present ON 5- Tab present 6- Tab present OFF 7- Tab present OFF 8- Tab broken ON ON 9- Tab broken ON A- Tab broken
B- Tab broken OFF C- Tab present ON D- Tab present
E- Tab present OFF
F- Tab present OFF
Tab broken = 0 Sensor ON = 0 Sensor ON = 0 Tab present = 1 sensor OFF = 1 Sensor OFF = 1
Mechanism sensor informatio n
Start sensor End sensor
ON
OFF
OFF OFF
ON
ON OFF OFF
ON OFF OFF
ON OFF
ON OFF OFF OFF
Mechansim
position sensor
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
-4 : Mechanism mode position
[Common table of MN* and HD*]
Mechanism
sensor
information
Dis-
play
Deck operation mode
-0 Not established
-1 EJECT EJECT position
-2 EJECT-EJECT1 Intermodal position
-3 EJECT1 EJECT1 position
-4 EJECT1-EJECT2 Intermodal position
-5 EJECT2 EJECT2 position
-6 EJECT2-ULSTOP Intermodal position
Even number (0, 2, 4, 6, 8, A, C, E)
-7 ULSTOP ULSTOP position
-8 ULSTOP-UPPER Intermodal position
-9 UPPER Loading (unloading) tape
-A UPPER-ONSTOP Intermodal position
-B ONSTOP PLAY position
-C PLAY-FWD/SS Intermodal position
-D FWD/SS
FWD (FWD Still/Slow) position
-E FWD/SS-REV Intermodal position
-F REV
REV (REV Still/Slow) position
-0 REV-OFFSTOP Intermodal position
-1 OFFSTOP Pinch roller OFF position Odd number (1, 3, 5, 7, 9, B, D, F)
-2
OFFSTOP-FFREWB
Intermodal position
-3 FFREWB FF/REW Brake position
-4 FFREWB-FFREW Intermodal position
-5 FFREW FF/REW position
5.3.6 EMG detail information <2>
The type of the cassette tape and the cassette tape winding po­sition can be confirmed based on the figure in EMG detail infor­mation <2> .
Note:
EMG detail information <2> is the reference information
stored using the remaining tape detection function of the cassette tape. As a result, it may not identify cas­sette correctly when a special cassette tape is used or when the tape has variable thickness.
*5 : Cassette tape type <1>
Display Cassette tape type <1>
00 Cassette type not identified 16
Large reel/small reel (T-0 to T-15/T-130 to T-210) not classified 82 Small reel, thick tape (T-120) identified/thin tape (T-140) identified 84 Large reel (T-0 to T-60) identified 92
Small reel, thick tape (T-130) identified/thin tape (T-160 to T-210) identified 93
Small reel, thick tape/C cassette (T-0 to T-100/C cassette) not classified C3
Small reel, thick tape/C cassette (T-0 to T-100/C cassette) being classified D3
Small reel, thick tape/C cassette (T-0 to T-100/C cassette) being classified E1 C cassette, thick tape (TC-10 to TC-20) identified E2 Small reel, thick tape (T-0 to T-100) identified E9 C cassette, thin tape (TC-30 to TC-40) identified F1
C cassette, thick tape/thin tape (TC-10 to TC-40) not classified
Notes:
Cassette tape type <1> is identified a few times during
mode transition and the identification count is variable depending on the cassette tape type. If an EMG occurs in the middle of identification, the cassette tape type may not be able to be identified.
If other value than those listed in the above table is dis-
played, the cassette tape type is not identified.
*6 : Cassette tape winding position
The cassette tape winding position at the moment of EMG is dis­played by dividing the entire tape (from the beginning to the end) in 21 sections using a hex number from “00” to “14”.
00 : End of winding 14 : Beginning of winding FF : Tape position not identified
*7 : Cassette tape type <2> (Winding area)
Display
00 04 - 08 05 - 06 05 - 0C 06 - 0C 06 - 0C 07 - 08 09 - 0B 0C - 0D 0D - 0F 0E - 10 10 - 12 10 - 13 11 - 14 12 - 14 13 - 14 13 - 14 13 - 14 13 - 14 15 - 16 16 - 17 17 - 18 19 - 1B
Cassette tape type <2>
Cassette type not identified C cassette, thick tape TC-10 Small reel, thick tape T-20 C cassette, thick tape TC-20P C cassette, thin tape TC-40 C cassette, thin tape TC-30 Small reel, thick tape T-40 Small reel, thick tape T-60 Small reel, thick tape T-80(DF-160) Small reel, thick tape T-90(DF-180) Small reel, thick tape T-100 Small reel, thin tape T-140 Small reel, thick tape T-120(DF-240) Small reel, thick tape T-130 Small reel, thin tape T-160 Small reel, thin tape T-210(DF-420) Small reel, thin tape T-180(DF-360) Small reel, thin tape T-168 Small reel, thick tape DF-300 Large reel T-20 Large reel T-30 Large reel T-40 Large reel T-60
(Reference) Word data (Beginning) (End)
(0497 - 0506) (0732 - 0858)
(05A9 - 0661) (0599 - 05FF) (0AA1 - 0C07) (0623 - 063D) (0C41 - 0CC3) (0611 - 0638) (0C0C - 0CB2)
(07CC - 08E5) (09FD - 0B78) (0C20 - 0DFC) (0D31 - 0F3E)
(0E43 - 107F)
(10E1 - 120C)
(1073 - 1313)
(1185 - 1429)
(12D3 - 141F) (1373 - 14C3) (1357 - 14C0) (1395 - 14EE)
(13A8 - 14CE)
(1536 - 1618)
(1647 - 175A) (1759 - 189C) (1989 - 1B2F)
Note:
The values of cassette tape type <2> in the above table
are typical values with representative cassette tapes.
5.3.7 EMG detail information <3>
Three deck operation modes preceding the deck operation mode in which the EMG occurs may be confirmed based on the figures in the EMG information detail <3>. For the contents of the dis­played information, see the table "Deck operation mode" in sec­tion "5.3.5 EMG detail information <1>".
(No.YD052)1-27
Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY DIGITAL VIDEO STORAGE CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan
(No.YD052)
Printed in Japan
VPT
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