Regarding service information other than these sections, refer to the service manual No. 82805 (HR-S9800U).
Also, be sure to note important safety precautions provided in the service manual.
SPECIFICATIONS
GENERAL
Power requirement: AC 120 V ` , 60 Hz
Power consumption
Power on: 26 W
Power off: 2.5 W
Temperature
Operating: 5°C to 40°C (41°F to 104°F)
Storage: –20°C to 60°C (–4°F to140°F)
Operating position: Horizontal only
Dimensions (W x H x D) : 435 mm x 105 mm x 343 mm
(17-3/16" x 4-3/16" x 13-9/16")
Weight: 4.9 kg (10.8 lbs)
Format: S-VHS/VHS NTSC standard
Maximum recording time
SP: 210 min. with ST-210 video cassette
EP: 630 min. with ST-210 video cassette
VIDEO/AUDIO
Signal system: NTSC-type color signal and EIA
monochrome signal, 525 lines/60 fields
Recording/Playback: DA-4 (Double Azimuth) head helical
systemscan system
Signal-to-noise ratio: 45 dB
Horizontal resolution
VHS: 230 lines
S-VHS: 400 lines
Frequency range
Normal audio: 70 Hz to 10,000 Hz
Hi-Fi audio: 20 Hz to 20,000 Hz
LOADING MOTOR BOARD ASSEMBLY <55> ....................... 5-16
SECTION 3
ELECTRICAL ADJUSTMENT
The difference point(s) compared with the reference model are as follows.
DELETE
3.2.3 Dynamic Drum preset
Adjustment value is changed.
3.3.5 Video EQ (Frequency response)
Specified value (G)• SP : 2.8 ± 0.3 div (–3 ± 1dB)
• EP : 2.8 ± 0.3 div (–3 ± 1dB)
Page 3
Important Safety Precautions
Connector
Metal sleeve
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.
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 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 Tape3) Spacers5) Barrier
2) PVC tubing4) 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.
12. Crimp type wire connector
In such cases as when replacing the power transformer in sets
where the connections between the power cord and power
transformer primary lead wires are performed using crimp type
connectors, if replacing the connectors is unavoidable, in order to prevent safety hazards, perform carefully and precisely
according to the following steps.
1) Connector part number : E03830-001
2) Required tool : Connector crimping tool of the proper type
which will not damage insulated parts.
3) Replacement procedure
(1) Remove the old connector by cutting the wires at a point
close to the connector.
Important : Do not reuse a connector (discard it).
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.1
7. Observe that wires do not contact heat producing parts
(heatsinks, oxide metal film resistors, fusible resistors, etc.)
8. Check that replaced wires do not contact sharp edged or
pointed parts.
9. When a power cord has been replaced, check that 10-15 kg of
force in any direction will not loosen it.
Power cord
Fig.2
10. Also check areas surrounding repaired locations.
11. Products using cathode ray tubes (CRTs)
In regard to such products, the cathode ray tubes themselves,
the high voltage circuits, and related circuits are specified for
compliance with recognized codes pertaining to X-ray emission.
Consequently, when servicing these products, replace the cathode ray tubes and other parts with only the specified parts.
Under no circumstances attempt to modify these circuits.
Unauthorized modification can increase the high voltage value
and cause X-ray emission from the cathode ray tube.
Fig.4
(3) Align the lengths of the wires to be connected. Insert
the wires fully into the connector.
Fig.5
(4) As shown in Fig.6, use the crimping tool to crimp the
metal sleeve at the center position. Be sure to crimp fully
to the complete closure of the tool.
1.25
2.0
5.5
Fig.6
(5) Check the four points noted in Fig.7.
Not easily pulled free
Wire insulation recessed
more than 4 mm
Fig.7
Crimping tool
Crimped at approx. center
of metal sleeve
Conductors extended
1
S40888-01
Page 4
d'
d
Chassis
Power cord,
primary wire
Safety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been
returned to original positions, Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards.
1. Insulation resistance test
Confirm the specified insulation resistance or greater between power cord plug prongs and
externally exposed parts of the set (RF terminals, antenna terminals, video and audio input
and output terminals, microphone jacks, earphone jacks, etc.). See table 1 below.
2. Dielectric strength test
Confirm specified dielectric strength or greater between power cord plug prongs and exposed
accessible parts of the set (RF terminals, antenna terminals, video and audio input and output
terminals, microphone jacks, earphone jacks, etc.). See table 1 below.
3. Clearance distance
When replacing primary circuit components, confirm specified clearance distance (d), (d’) between soldered terminals, and between terminals and surrounding metallic parts. See table 1
below.
Fig. 8
4. Leakage current test
Confirm specified or lower leakage current between earth ground/power cord plug prongs
and externally exposed accessible parts (RF terminals, antenna terminals, video and audio
input and output terminals, microphone jacks, earphone jacks, etc.).
Measuring Method : (Power ON)
Insert load Z between earth ground/power cord plug prongs and externally exposed accessible parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and
following table 2.
Externally
exposed
accessible part
Z
V
Fig. 9
ab
c
A
5. Grounding (Class 1 model only)
Confirm specified or lower grounding impedance between earth pin in AC inlet and externally exposed accessible parts (Video in,
Video out, Audio in, Audio out or Fixing screw etc.).
Measuring Method:
Connect milli ohm meter between earth pin in AC inlet and exposed accessible parts. See figure 10 and grounding specifications.
AC inlet
Earth pin
AC Line Voltage
100 V
100 to 240 V
110 to 130 V
110 to 130 V
200 to 240 V
Exposed accessible part
Milli ohm meter
Fig. 10
Region
Japan
USA & Canada
Europe & AustraliaR 10 MΩ/500 V DC
RegionLoad Z
Insulation Resistance (R)
≤"
R 1 MΩ/500 V DC
≥"≥"
1 MΩ R 12 MΩ/500 V DC
≤"
Table 1 Specifications for each region
Grounding Specifications
Region
USA & Canada
Europe & Australia
Dielectric Strength
AC 1 kV 1 minute
AC 1.5 kV 1 miute
AC 1 kV 1 minute
AC 3 kV 1 minute
AC 1.5 kV 1 minute
(Class 2)
(Class 1)
Grounding Impedance (Z)
≤"
Z 0.1 ohm
≤"
Z 0.5 ohm
Clearance Distance (d), (d')
≤"
d, d' 3 mm
≤"
d, d' 4 mm
≤"
d, d' 3.2 mm
≤"
d 4 mm
≤"
d' 8 mm (Power cord)
≤"
d' 6 mm (Primary wire)
a, b, cLeakage Current (i)AC Line Voltage
100 V
110 to 130 V
110 to 130 V
220 to 240 V
Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
Japan
USA & Canada
Europe & Australia
Table 2 Leakage current specifications for each region
1 kΩ
0.15 µF
1.5 kΩ
2 kΩ
50 kΩ
2
≤"
i1 mA rmsExposed accessible parts
≤"
i0.5 mA rms
≤"
i0.7 mA peak
≤"
i2 mA dc
≤"
i0.7 mA peak
≤"
i2 mA dc
Exposed accessible parts
Antenna earth terminals
Other terminals
S40888-01
Page 5
SECTION 1
DISASSEMBLY
1.1 Disassembly flow chart
This flowchart lists the disassembling steps for the cabinet
parts and P. C. boards in order to gain access to item(s) to
be serviced. When reassembling, perform the step(s) in reverse order. Bend, route and dress the flat cables as they
were originally laid.
When reassembling, perform the step(s) in the reverse order.
These numbers are also used as the identification (location) 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,
assembly,<Note 5a>
SW/Display board
assembly
Jack board assembly
Fig.
No.
PointNote
-----------------
4(L2a), 2(L2b),3(L2c)
-----------------
2(S2a)
CN1(WR3b),
(S3a), (S3b), (S3c)
(S4a), (S4b),<Note 4a>
(S4c), (S4d),2(L4a)
-----------------
CN7001(WR5a),4(L5b)
-----------------
CN7191(WR5b)
4(L7b), Foot ass'y,
2 (S7a), 4 (L7c),
3 (L7d)
<Note 2b>
<Note 2b>
<Note 5b>
<Note 2a>
• When reattaching the Front panel assembly, make sure that
the door opener "a" of the Cassette holder assembly is lowered in position prior to the reinstallation.
• When reattaching the Front panel assembly, pay careful attention to the jack "b" at the Jack board assembly to make it
fit the hole of the Front panel assembly.
<Note 2b>
• Be careful not to damage the connector and wire etc. during
connection and disconnection. When connecting the wire
to the connector, be careful with the wire direction.
<Note 4a>
• When it is required to remove the screws (S4a to S4b) retaining the Mechanism assembly, please refer to the "Procedures for Lowering the Cassette holder assembly". (See
on pages 1-2.)
• When removing the Mechanism assembly only, unhook the
two spacers connecting it with the Main board assembly
with pliers from the back side of the Main board assembly
first, and then remove the Mechanism assembly.
• When reattaching the Mechanism assembly to the Main
board assembly, take care not to damage the sensors and
switch on the Main board assembly.
• The wire (WR4a) has excess length that may be loose, as it
is quite long. After inserting the wire and connectors, the
loose portion of the wire should be taken up and accommodated between the A/C head base and the main deck.
<Note 5a>
• The REC safety board assembly is attached to the SW/Display board assembly. It is therefore necessary to remove
the REC safety board assembly before removing the SW/
Display board assembly.
<Note 5b>
• When reattaching the Jack board assembly, should be attach the Jack board assembly to the Bottom chassis before
attaching the SW/Display board assembly.
<Note 7a>
• When attaching the Bottom cover, make sure that the Earth
plate of the Bottom cover is passed through the hole of the
Bottom chassis and then touches the GND (Ground) on the
Main board assembly.
1-1
Page 6
Procedures for Lowering the Cassette holder assembly
As the mechanism of this unit is integrated with the Housing
assembly, the holder must be lowered and the two screws unscrewed when removing the Mechanism assembly.
a<Note 2a>
b<Note 2a>
(L2a)
(A)
(B)
Fig. 2
Fig. 1
Fig. 3
Turn the loading motor pulley in the direction as indicated by
Fig.2. As both (A) and (B) levers are lodged twice, push the
levers in the direction as indicated by Fig.3 to release them.
When pushing the levers, do it in the order of (A), (B), (B),
(A). When the holder has been lowered, turn the pulley until
the cassette holder is securely in place without allowing any
up/down movement.
Procedures for Lowering the Cassette holder assembly
(S1a)
[1]
Top cover
(L2a)
CN3012
(L2b)
[2]
Front
panel
(L2c)
(L2b)
WR2a
<Note 2b>
assembly
Front panel
backside
(S2a)
CN7004
WR2a
<Note 2b>
ADV. Jog board
assembly
Fig. D2
Note: When installing the Drum assembly, secure the screws
(S3a to S3c) in the order of a, b, c.
Not used
Drum shield
(S3d)
1-2
(S1c)
Not used
Inertia plate
(S3c)
CON1
CN1
(S1c)
[1]
Bracket
(S1a)
(S1a)
Roller arm
assy
(S3a)
(L3a)
(P3)
(L3b)
[3]
Drum
assembly
Fig. D1Fig. D3
WR3a
<Note 2b>
(S3b)
WR3b
<Note 2b>
Cleaner assy
(L3c)
Not used
Page 7
WR4a
[7]
Bottom cover
(L7c)
(L7c)
(L7d)
(L7b)
(L7a)
(L7a)
(L7b)
(S7a)
Foot assy
Foot (rear)
Foot
(rear)
Earth
plate
<Note 7a>
Foot
assy
A/C head base
(S4b)
<Note 4a>
(S4c)
<Note 4a>
Note:
When installing the
Mechanism assembly,
secure the screws
(S4a to S4b) in the
order of a, b.
WR4a
<Note 2b>
(S4a)
(S4d)
(S6c)
(S6b)
(S6b)
Q3003
End sensor
<Note 4a>
(L4a)
Spacer
<Note 4a>
D3001
LED
<Note 4a>
Fig. D4
[4]
Mechanism
assembly
(L4a)
Spacer
<Note 4a>
CN2001
Q3002
Start sensor
<Note 4a>
[6]
Main board
assembly
(S6a)
Fig. D6
WR5b
<Note 2b>
CN7191
[5] Jack board assembly
(L5b)
<Note 5b>
REC Safety
board assembly
<Note 5a>
WR5a
<Note 2b>
Fig. D5
(L5a)
[5] SW/Display board assembly
(L5b)
CN7001
Fig. D7
1-3
Page 8
1.4 Service position
This unit has been designed so that the Mechanism and
Main board assemblies can be removed together from the
chassis assembly. Before diagnosing or servicing the circuit boards, take out the major parts from the chassis assembly.
1.4.1 How to set the “Service position”
(1) Refer to the disassembly procedure and perform the dis-
assembly of the major parts before removing the Drum
assembly.
(2) Lower the cassette holder to prepare for the removal of
the Mechanism assembly screws. (Refer to the “Procedures for lowering the Cassette holder assembly” of 1.3
Disassembly/assembly method.)
(3) Remove the combined Mechanism and Main board as-
semblies.
(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.1-4-
1a.)
(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
assembly.
Notes:
• Before inserting the power cord plug into the power
outlet, 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 “1.3 Disassembly/assembly method”.
• 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 cas-
sette 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.
S-Sub board assembly
Demod board assembly
Navigation board assembly
CN902
CN7191
Jack board assembly
SW/Display board assembly
3D Digital/4M board assembly
TP4001
VR1401
CTL.P
D/A LEVEL ADJ
TP2253
A.FM
REC Safety
board assembly
TPGND
Terminal board assembly
TP111
D.FF
Main board assembly
TP106
PB.FM
CP4001
CP5302
CP5303
CP5301
CN3012
CN3011
CN7001
TP7001
(TEST)
To ADV.JOG
Fig. 1-4-1a
1-4
1.4.2 Precautions for cassette loading in the “Service
position”
The REC safety board assembly detects cassette loading
as well as cassette tabs. Therefore, after the assembly has
been removed in the “Service position”, it is required to set
the switch manually on the REC safety board assembly
when a cassette is loaded.
1.4.3 Cassette loading and ejection methods in the
“Service position”.
(1)
Insert a cassette halfway in the Cassette holder assembly.
(2) Set the switch on the REC safety board assembly to on
(by pressing the switch).
As soon as the cassette starts to be loaded, set the switch on
(3)
the REC safety board assembly to off (by releasing the switch).
(4) Now the desired operation (recording, playback, fast for-
ward, rewind, etc.) is possible in this status.
(5)
The switch on the REC safety board assembly does not
have to be operated when ejecting a tape. But be sure to
turn the set to the normal position before ejecting the tape.
Note:
• In the “Service position”, the cassette tabs cannot be
detected and recording becomes possible even with a
cassette with broken tabs such as the alignment tape.
Be very careful not to erase important tapes.
1.5 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”.
1.5.1 How to set the “Mechanism service mode”
(1) Unplug the power cord plug from the power outlet.
(2) Connect TPGND and TP7001(TEST) on the board as-
sembly with a jump wire. (Refer to Fig. 1-4-1a.)
(3) Insert the power cord plug into the power outlet.
(4) With lock levers (A) (B) on the left and right of the Cas-
sette holder assembly pulled toward the front, slide the
holder in the same direction as the cassette insertion di-
rection. (For the positions of lock levers (A) (B), refer to
the “Procedures for lowering the Cassette holder assem-
bly” of 1.3 Disassembly/assembly method.)
(5) The cassette holder lowers and, when the loading has
completed, the mechanism enters the desired mode.
1.6 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 serv-
icing.
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.
1.6.1 Setting the Jig RCU mode
(1) Unplug the power cord plug from the power outlet.
(2) Press and hold the “REC” and “PAUSE” buttons on the
VCR simultaneously, while plugging the power cord plug
into the power outlet.
When the VCR is set to the Jig RCU mode, the symbols
( “ : ” ) in the time display of the FDP are turned off.
1.6.2 Setting the User RCU mode
(1) Turn off the power.
(2) Press the “REC” and “PAUSE” buttons of the VCR si-
multaneously. Alternatively, transmit the code “80” from
the Jig RCU.
Page 9
1.7 Emergency display function
INITIAL MODE
DATA CODE
CUSTOM CODE
43: A CODE
[Data transmitting method]
Depress the “ ” ( 3 ) button
after the data code is set.
Jig RCU
This unit has a function for storing the history of the past two
emergencies (EMG) and displaying them on each FDP (or
OSD). With the status of the VCR and mechanism at the moment an emergency occurred can also be confirmed.
FDP display model
[FDP display]
0 : 00 : 00
Normal display
Notes:
•
The EMG detail information <1><2> show the information
on the latest EMG.
It becomes “ – – : – – : – –” when there is no latest EMG
record.
•
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).
E: * * : **
*1: *2 : 34
*5: *6 : *7
FDP (7segment LED) display model
[FDP display]
0: 00
E: **
1: **
2: *1
3: *2
4: 34
5: *5
6: *6
7: *7
OSD display model
[OSD display]
EMG content display
(E:Latest:Previous)
EMG detail information <1>
EMG detail information <2>
Normal display
EMG content display (Latest)
EMG content display (Previous)
EMG detail information <1>
[Deck operation mode]
EMG detail information <1>
[Mechanism operation mode]
EMG detail information <1>
[Mechanism sensor information and Mechanism mode position]
EMG detail information <2>
[Type of the cassette tape in use <1>]
EMG detail information <2>
[Winding position of the cassette tape in use]
EMG detail information <2>
[Type of the cassette tape in use <2> (Winding area)]
EMG
E: * * :**
*1: *2 : 34
*5: *6 : *7
EMG content display
(E:Latest:Previous)
EMG detail information <1>
EMG detail information <2>
Fig. 1-7a Jig RCU [PTU94023B]
1.7.1 Displaying the EMG information
(1) Transmit the code “59” from the Jig RCU.
The FDP shows the EMG content in the form of “E:**:**”.
<Example 1> E : 01 : 03
Previous EMG
Latest EMG
<Example 2> E : – – : – –
No EMG record
(2) Transmit the code “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 “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 “59” from the Jig RCU once again to re-
set the display.
Notes:
•
For the OSD display model, all EMG information are
showed by transmitting first code from the Jig RCU.
•
For the EMG content, see “1.7.3 EMG content description”.
•
For the EMG detail information <1> , see “1.7.4 EMG detail information <1> ”.
•
For the EMG detail information <2> , see “1.7.5 EMG detail information <2>”.
1.7.2 Clearing the EMG history
(1) Display the EMG history.
(2) Transmit the code “36” from the Jig RCU.
(3) Reset the EMG display.
(EMG-02e)
1-5
Page 10
1.7.3 EMG content description
Note:
EMG contents “E08/E09” are for the model with Dynamic Drum (DD).
FDPCONTENTCAUSE
1.
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:
DD Initialized
(Absolute
Position
Sensor)
EMG
E09: DD FG EMG
E0A:Supply Reel
Pulse EMG
EC1 or EU1:
Head clog warning
When the mechanism mode cannot be changed to another mode even when the loading motor has rotated
for more than 4 seconds in the loading direction, [E:01]
is identified and the power is turned off.
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 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. However, the reel EMG is
not detected in STILL/SLOW modes.
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.
When the eject operation does not complete in 3 seconds after the start, [E:05] is identified, the pinch rollers
are turned off and stopped, and the power is turned off.
When the cassette insertion operation does not complete
in 3 seconds after the start, the cassette is ejected. In
addition, when the operation does not complete within
3 seconds after the start, [E:05] is also identified and the
power is turned 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 STILL/SLOW/FF/REW modes.
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 DD tilting does not complete in 4 seconds, [E:08]
is identified, the tilt motor is stopped and the power is
turned off.
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 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). However, note that the reel EMG
is not detected in the SLOW/STILL mode.
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:C1] or [E:U1]
is identified and recorded in the emergency history. During the period in which a head clog is detected, the FDP and OSD repeat the
“3-second warning display” and “7-second 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.
The mechanism is locked in the middle of mode transition.
2
. The mechanism is locked at the loading end due to the encoder position
reading error during mode transition.
3.
Power is not supplied to the loading MDA.
1.
The mechanism is locked in the middle of mode transition.
2.
The mechanism is locked at the unloading end due to the encoder position reading error during mode transition.
3.
Power is not supplied to the loading MDA.
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;
The idler gear is meshed with the take-up reel gear, but incapable of wind-
2)
ing due to too large mechanical load (abnormal tension);
3) The take-up reel sensor does not output the FG pulse.
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.
2) The idler gear is meshed with the supply reel gear, but incapable of wind-
ing due to too large a mechanical load (abnormal tension);
3) The supply reel sensor does not output the FG pulse.
3.
Power is not supplied to the reel sensors.
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;
The tape is damaged or a foreign object (grease, etc.) adheres to the tape.
2)
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 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.
Housing load increasing factors: Temperature environment (low temperature, etc.), mechanism wear or failure.
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 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 entangling, etc.).
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 is 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 absolute value sensor is defective. (The soldered parts have separated.)
2. The pull-up resistor at the absolute 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
absolute value sensor.
4.
The absolute value sensor data is not sent to the System Controller CPU.
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 to the sensor is not supplied. (Connection failure/soldering failure)
5. The FG pulse is not sent to the System Controller CPU.
6.
The tilt motor is defective. (The soldered parts have separated.)
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 cas-
sette is cut in the middle;
2) A mechanical factor caused tape slack inside and outside the supply
reel side of the cassette shell. 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;
3) The FG pulse output from the supply reel sensor is absent.
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 shell. In this case, the supply reel will not rotate
until the tape slack is removed by the REV transport, so the pulse will
not be generated until that time;
3) The FG pulse output from the take-up reel sensor is absent.
3.
The power to a reel sensor is not supplied.
1-6
Table 1-7-3a
Page 11
1.7.4 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 mod
e position at the moment of EMG
Note:
For EMG detailed information <1>, the content of the code
•
that is shown on the FDP (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*, HD* and M3*]
Display
MN*/M3* HD*
00-Mechanism being initialized
0100 STOP with pinch roller pressure off (or tape present with P.OFF)
0201 STOP with pinch roller pressure on
03-POWER OFF as a result of EMG
0404 PLAY
0C0E REC
1011 Cassette ejected
2022 FF
21-Tape fully loaded, START sensor ON, short FF
22-Cassette identification FWD SEARCH before transition to FF (SP
2426 FWD SEARCH (variable speed) including x2-speed
2C2E INSERT REC
4043 REW
42-Cassette identification REV SEARCH before transition to REW (SP
4447 REV SEARCH (variable speed)
4C4C AUDIO DUB
6C6E INSERT REC (VIDEO + AUDIO)
8484 FWD STILL / SLOW
8585 REV STILL / SLOW
8C8F REC PAUSE
8D- Back spacing
8E- Forward spacing (FWD transport mode with BEST function)
ACAF INSERT REC PAUSE
AD- INSERT REC back spacing
CCCD AUDIO DUB PAUSE
CD-AUDIO DUB back spacing
ECEF INSERT REC (VIDEO + AUDIO) PAUSE
ED- INSERT REC (VIDEO + AUDIO) back spacing
x7-speed)
x7-speed)
Deck operation mode
*2 : Mechanism operation mode
[Common table of MN* and M3*]
Display
MN* M3*
00 00 Command standby (Status without executing command)
02 02 POWER OFF by EMG occurrence
04 04 Moving to the adjacent position in the LOAD direction
06 06 Moving to the adjacent position in the UNLOAD direction
08 08 Cassette ejection being executed / Cassette housing ejection being
-0AMode transition to STOP with cassette ejection end
0A 0C Cassette insertion being executed
0C 0E Tape being loaded
0E 10 Tape being unloaded
10 12 Mode transition to STOP with pinch roller compression ON
12 14 Mode transition to STOP with pinch roller compression OFF
14 16
16 18
18 1A Mode transition to PLAY
1A 1C Mode transition to FWD SEARCH
1C 1E Mode transition to REC
1E 20 Mode transition to FWD STILL / SLOW
20 22 Mode transition to REV STILL / SLOW
22 24 Mode transition to REV SEARCH
24 26 Mode transition from FF / REW to STOP
26 28 Mode transition to FF
28 2A Mode transition to REW
2A 2C 4 sec. of REV as a result of END sensor going ON during loading
2C 2E
2E 30 Mechanism position being corrected due to overrun
80 80 Mechanism in initial position (Dummy command)
executed
Mode transition to STOP with pinch roller compression OFF as a result
of POWER OFF
Mode transition to STOP with pinch roller compression ON as a result
of POWER ON
Short FF / REV as a result of END sensor going ON during unloading
Mechanism operation mode
[Table of HD*]
Display
00STOP with pinch roller pressure off
01STOP with pinch roller pressure on
02U/L STOP (or tape being loaded)
04PLAY
05PLAY (x1-speed playback using JOG)
0E REC
11Cassette ejected
22FF
26FWD SEARCH (variable speed) including x2-speed
2E INSERT REC
43REW
47REV SEARCH
4C AUDIO DUB
6E INSERT REC (VIDEO + AUDIO)
84FWD STILL/SLOW
85REV STILL/SLOW
8FREC PAUSE
AF INSERT REC PAUSE
C7 REV SEARCH (x1-speed reverse playback using JOG)
CD AUDIO DUB PAUSE
EF INSERT REC (VIDEO + AUDIO) PAUSE
F0Mechanism being initialized
F1POWER OFF as a result of EMG
F2Cassette being inserted
F3Cassette being ejected
F4Transition from STOP with pinch roller pressure on to STOP with pinch
roller pressure off
F5Transition from STOP with pinch roller pressure on to PLAY
F6Transition from STOP with pinch roller pressure on to REC
F7Cassette type detection SEARCH before FF/REW is being executed
F8Tape being unloaded
F9Transition 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 de-
tection 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)
Mechanism operation mode
1-7
Page 12
3– : Mechanism sensor information
[Common table of MN*, HD* and M3*]
–4 : Mechanism mode position
[Common table of MN*, HD* and M3*]
Display Mechanism mode position
MN* HD* M3*
-0 -7 - Initial value
-1 -0 - EJECT position
---0 EJECT position (Cassette housing drive mode)
-2 -7 - Housing operating
---1 Between EJECT and U / L STOP
-3 -1 -2 U / L STOP position
---3 Guide arm drive position
-4 -7 -4 Tape being loaded / unloaded (When the pole base is
-5 -2 -5 Tape being loaded / unloaded (When the pole base is
-6 -7 -6 Pole base compressed position
-7 -3 -F FF / REW position
-8 -7 -F Between FF / REW and STOP with pinch roller compres-
-9 -4 -F STOP with pinch roller compression OFF
-A -7 -E Between STOP with pinch roller compression OFF and
-B -5 - REV (REV STILL / SLOW) position
---D REV position
---C Between REV and REV STILL / SLOW
---B REV STILL / SLOW position
-C -7 - Between REV and FWD
---A Between REV STILL / SLOW and FWD STILL / SLOW
-D -6 - FWD (FWD STILL / SLOW) position
---9 FWD STILL / SLOW position
-E -7 - Between FWD and PLAY
---8 Between FWD STILL / SLOW and PLAY
-F -6 -7 PLAY position
located on the front side of the position just beside the
drum)
located on the rear side of the position just beside the
drum)
sion ON
REV
Note:
• In the case of the "HD*” microprocessor, as the display is
always "-7” at any intermediate position between modes,
the position of transitory EMG may sometimes not be located.
1.7.5 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> .
[FDP/OSD display]
*5 : *6 : *7
*5 : Type of the cassette tape in use <1>
*6 : Winding position of the cassette tape in use
*7 : Type of th
e cassette tape in use
<2>
(Winding area)
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>
DisplayCassette tape type <1>
00Cassette type not identified
16
Large reel/small reel (T-0 to T-15/T-130 to T-210) not classified
82Small reel, thick tape (T-120) identified/thin tape (T-140) identified
84Large 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
E1C cassette, thick tape (TC-10 to TC-20) identified
E2Small reel, thick tape (T-0 to T-100) identified
E9C cassette, thin tape (TC-30 to TC-40) identified
C cassette, thick tape/thin tape (TC-10 to TC-40) not classified
F1
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 displayed,
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 22 sections using a hex number from “00” to “15”.
“00”: End of winding
“15”: Beginning of winding
“FF or – – ” : Tape position not identified
*7 : Cassette tape type <2> (Winding area)
DisplayCassette tape type <2>
00Cassette type not identified
07Small reel, thick tapeT-5
08 - 0E C cassette, thick tapeTC-10
09 - 15 C cassette, thick tapeTC-20P
0A - 0B Small reel, thick tapeT-20
0A - 16 C cassette, thin tapeTC-30
0A - 16 C cassette, thin tapeTC-40
0D - 0F Small reel, thick tapeT-40
11 - 14 Small reel, thick tapeT-60
15 - 18 Small reel, thick tapeT-80 / DF-160
17 - 1A Small reel, thick tapeT-90 / DF-180
19 - 1D Small reel, thick tapeT-100
1D - 21 Small reel, thick tapeT-120 / DF-240
1E - 1F Small reel, thin tapeT-140
1F - 23 Small reel, thick tapeT-130
21 - 23 Small reel, thin tapeT-160
21 - 23 Small reel, thin tapeT-168
22 - 24 Small reel, thick tapeDF-300
22 - 24 Small reel, thin tapeT-180 / DF-360
22 - 24 Small reel, thin tapeT-210 / DF-420
22 - 23 Large reelT-5
23 - 24 Large reelT-10
25 - 26 Large reelT-20
27 - 29 Large reelT-30
29 - 2B Large reelT-40
2D - 2F Large reelT-60
Note:
•
The values of cassette tape type <2> in the above table
are typical values with representative cassette tapes.
1-8
Page 13
1.8 Servicing the video navigation function
INITIAL MODE
DATA CODE
CUSTOM CODE
43: A CODE
[Data transmitting method]
Depress the “ ” ( 3 ) button
after the data code is set.
Jig RCU
The video navigation function built into this unit works by storing the video navigation data in the internal Flash memory
and writing data in the cassette tape simultaneously.
Therefore, the Flash memory and the cassette tape (self- recorded tape) form a related pair. If the Flash memory or the
board assembly (in which the Flash memory is included) is
replaced, the video navigation function will not operate. In
this case, it is required to copy the video navigation data in
the original Flash memory into the Flash memory of the unit
which the navigation function is available.
(5) Press the “STOP” button of the master unit.
When copying is started,“3” will be displayed on the FDP
and when copying is completed the FDP display changes
from “3” to “4” .
When an error occurs during the copying process, “5” will
be displayed on the FDP. During such an occurrence the
slave unit FDP display is “1” .
FDP : 1 (S)
FDP : 3 (M)
<Completed>
FDP : 4 (M)
<Error>
FDP : 5 (M)
1.8.1 Copying the video navigation data
Notes:
• When copying the video navigation data, initialization
of the Flash memory of the master unit is required.
• Connect the JLIP cable to each “JLIP terminal” of the
VCR.
JLIP Cable (Parts No. : QAM0129-001 or PEAC0453)
Player <Slave Unit (S)>
JLIP cable
[CONDITION]
Power OFF
•
No cassette tape
•
Recorder <Master Unit (M)>
[CONDITION]
Power OFF
•
No cassette tape
•
Flash memory initialization
•
Fig. 1-8-1a Connection diagram
(1) Set the VCR to the Jig RCU mode (the mode in which
codes from the Jig RCU can be received).
(2) Turn off the power of the 2 units (slave and master) VCR
and set it without a cassette tape.
(3) Press the “PLAY” button of the slave unit for 7 seconds.
When the copy mode is set, “1” will be displayed on the
FDP. (To cancel the copy mode, press the “PLAY” button of the slave unit.)
(6) Press the“STOP” button of the master unit.
The copy mode of the master and slave unit will be cancelled simultaneously.
1.8.2 Erasing the video navigation data (Initialization)
This is the service mode to erase all the video navigation
data inside the Flash memory. When a unit is replaced or
after an operations check, erase the data which is not required while observing the TV screen.
Notes:
• During Flash memory initialization, the transmission of
the Jig code may affect the peripheral VCR. Therefore,
when initializing the Flash memory, be sure to unplug
the peripheral VCR power cable.
• Please take note that after erasing data cannot be restored, therefore care must be exercised.
• 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).
Fig. 1-8-2a Jig RCU [PTU94023B]
FDP : 1 (S)
(4) Press the “PAUSE” button of the master unit for 7 sec-
onds. When the copy mode is set, “2” will be displayed
on the FDP. (To cancel the copy mode, press the
“PAUSE” button of the master unit.)
FDP : 2 (M)
1-9
Page 14
(1) Turn on the power.
(2) Transmit the code “FC” from the Jig RCU.
Then the “Flash memory utilities” screen is displayed.
(See Fig. 1-8-2c.)
(3) Transmit the code “21” from the Jig RCU.
Select “1.Erase” then erase starts. During erase “Please
wait” is displayed and when erase is completed “Erased”
will be displayed. (See Fig. 1-8-2d and Fig. 1-8-2e.)
(4) Transmit the code “23” from the Jig RCU, then the mode
is cancelled. (See Fig. 1-8-2b.)
Fig. 1-8-2b
Fig. 1-8-2c
Fig. 1-8-2d
Fig. 1-8-2e
CH 1
FLASH MEMORY UTILITIES
1 ERASE DATA
2 READ AND WRITE TEST
3 EXIT
RESULT:
VCR ID:
***
LIBRALY VAR :
FLASH MEMORY UTILITIES
1 ERASE DATA
2 READ AND WRITE TEST
3 EXIT
RESULT:PLEASE WAIT
VCR ID:
LIBRALY VAR :
FLASH MEMORY UTILITIES
1 ERASE DATA
2 READ AND WRITE TEST
3 EXIT
RESULT:ERASED
VCR ID:
LIBRALY VAR :
***
***
****
****
****
1.8.3 Factory setting level during shipment
After shipment from the factory, this is the service mode to
return the rewritten EEPROM data to the factory setting level
(Factory reset).
Note:
• When this operation is executed, all user's setting contents will return to the factory setting level, therefore
care must be exercised.
(1) Insert a cassette tape.
(2) Transmit the code “6F” from the Jig RCU.
(3) After a setting is completed, the cassette tape is auto-
matically ejected.
1-10
Page 15
JVC SERVICE & ENGINEERING COMPANY OF AMERICA
DIVISION OF JVC AMERICAS CORP.
www.jvcservice.com(US Only)
JVC CANADA INC.
Head office
:
21 Finchdene Square Scarborough, Ontario M1X 1A7
(416)293-1311
Printed in Japan
0207 WPC
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