JVC HR-VP690U User manual

SERVICE MANUAL
No. 82841
December 2000
HR-VP690U/VP790U
SPECIFICATIONS (The specifications shown pertain specifically to the model HR-VP790U)
VIDEO CASSETTE RECORDER
Printed in Japan This service manual is printed on 100% recycled paper.
COPYRIGHT © 2000 VICTOR COMPANY OF JAPAN, LTD.
HR-VP690U/VP790U No. 82841
JVC SERVICE & ENGINEERING COMPANY OF AMERICA
DIVISION OF JVC AMERICAS CORP.
Head office
East Coast
Midwest
West Coast
Atlanta
Hawaii
:
:
:
:
:
:
1700 Valley Road Wayne, New Jersey 07470-9976
10 New Maple Avenue Pine Brook, New Jersey 07058-9641
705 Enterprise Street Aurora, Illinois 60504-8149
5665 Corporate Avenue Cypress, California 90630-0024
1500 Lakes Parkway Lawrenceville, Georgia 30043-5857
2969 Mapunapuna Place Honolulu, Hawaii 96819-2040
[phone]
[phone]
[phone]
[phone]
[phone]
[phone]
JVC CANADA INC.
Head office
Montreal
Vancouver
:
:
:
21 Finchdene Square Scarborough, Ontario M1X 1A7
16800 Rte Trans-Canadienne, Kirkland, Quebec H9H 5G7
13040 Worster Court Richmond, B.C. V6V 2B3
[phone]
[phone]
[phone]
S40895-03
GENERAL
Power requirement : AC 120 V
` , 60 Hz
Power consumption
Power on : 18 W
Power off : 2.0 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) : 400 mm x 94 mm x 255 mm
(15-3/4" x 3-3/4" x 10-1/16")
Weight : 3.1 kg (6.8 lbs)
Format : 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 system : DA-4 (Double Azimuth) head helical scan
system
Signal-to-noise ratio : 45 dB
Horizontal resolution : 230 lines
Frequency range
Normal audio : 70 Hz to 10,000 Hz
Hi-Fi audio : 20 Hz to 20,000 Hz
Input/Output :RCA connectors (IN x 2, OUT x 1)
TUNER
Tuning system : Frequency-synthesized tuner
Channel coverage
VHF : Channels 2–13
UHF : Channels 14–69
CATV : 113 Channels
RF output : Channel 3 or 4 (switchable; preset to
Channel 3 when shipped) 75 ohms,
unbalanced
TIMER
Clock reference : Quartz
Program capacity : 1-year programmable timer/
8 programs
Memory backup for timer is not supported.
ACCESSORIES
Provided accessories : RF cable (F-type),
Infrared remote control unit,
“AA” battery x 2
Specifications shown are for SP mode unless specified otherwise.
E. & O.E. Design and specifications subject to change without notice.

Important Safety Precautions
INSTRUCTIONS
1. DISASSEMBLY
1.1 Disassembly flow chart ......................................................... 1-1
1.2 How to read the disassembly and assembly ......................... 1-1
1.3 Disassembly/assembly method ............................................ 1-1
1.4 Service position ..................................................................... 1-4
1.4.1 How to set the “Service position” .................................... 1-4
1.5 Mechanism service mode ..................................................... 1-4
1.5.1 How to set the “Mechanism service mode” .................... 1-4
1.6 Jig RCU mode ....................................................................... 1-4
1.6.1 Setting the Jig RCU mode .............................................. 1-4
1.6.2 Setting the User RCU mode ........................................... 1-4
1.7 Emergency display function .................................................. 1-5
1.7.1 Displaying the EMG information ..................................... 1-5
1.7.2 Clearing the EMG history ............................................... 1-5
1.7.3 EMG content description ................................................ 1-6
1.7.4 EMG detail information <1> ............................................ 1-7
1.7.5 EMG detail information <2> ............................................ 1-8
2. MECHANISM ADJUSTMENT
2.1 Before starting repair and adjustment .................................. 2-1
2.1.1 Precautions ..................................................................... 2-1
2.1.2 Checking for proper mechanical operations ................... 2-1
2.1.3 Manually removing the cassette tape ............................. 2-1
2.1.4 Jigs and tools required for adjustment ............................ 2-2
2.1.5 Maintenance and inspection ........................................... 2-3
2.2 Replacement of major parts .................................................. 2-6
2.2.1 Before starting disassembling (Phase matching between
mechanical parts) .......................................................... 2-6
2.2.2 How to set the “Mechanism assembling mode” .............. 2-6
2.2.3 Cassette holder assembly .............................................. 2-6
2.2.4 Pinch roller arm assembly .............................................. 2-8
2.2.5 Guide arm assembly and press lever assembly ............. 2-8
2.2.6 A/C head ......................................................................... 2-8
2.2.7 Loading motor ................................................................. 2-8
2.2.8 Capstan motor ................................................................ 2-9
2.2.9 Pole base assembly (supply or take-up side) ................. 2-9
2.2.10 Rotary encoder ........................................................... 2-10
2.2.11 Clutch unit ................................................................... 2-10
2.2.12 Change lever assembly, direct gear, clutch gear and
coupling gear .............................................................. 2-10
2.2.13 Link lever ..................................................................... 2-11
2.2.14 Cassette gear, control cam and worm gear ................. 2-11
2.2.15 Control plate ................................................................ 2-11
2.2.16 Loading arm gear (supply or take-up side) and
loading arm gear shaft ................................................ 2-12
2.2.17 Take-up lever, take-up head and control plate guide .. 2-13
2.2.18 Capstan brake assembly ............................................ 2-13
2.2.19 Sub brake assembly (take-up side) ............................ 2-13
2.2.20 Main brake assembly (take-up side), reel disk
(take-up side) and main brake assembly (supply side).... 2-13
2.2.21 Tension brake assembly, reel disk (supply side) and
tension arm assembly ................................................. 2-14
2.2.22 Idler lever, idler arm assembly .................................... 2-14
2.2.23 Stator assembly .......................................................... 2-14
TABLE OF CONTENTS
Section Title Page Section Title Page
2.2.24 Rotor assembly ........................................................... 2-14
2.2.25 Upper drum assembly ................................................. 2-15
2.3 Compatibility adjustment ..................................................... 2-16
2.3.1 FM waveform linearity .................................................. 2-16
2.3.2 Height and tilt of the A/C head ...................................... 2-17
2.3.3 A/C head phase (X-value) ............................................ 2-17
2.3.4 Standard tracking preset .............................................. 2-18
2.3.5 Tension pole position .................................................... 2-18
3. ELECTRICAL ADJUSTMENT
3.1 Precaution ............................................................................. 3-1
3.1.1 Required test equipments .............................................. 3-1
3.1.2 Required adjustment tools .............................................. 3-1
3.1.3 Color (colour) bar signal, color (colour) bar pattern ........ 3-1
3.1.4 Switch settings and standard precautions ...................... 3-1
3.2 Servo circuit .......................................................................... 3-2
3.2.1 Switching point ............................................................... 3-2
3.2.2 Slow tracking preset ....................................................... 3-2
3.3 Video circuit........................................................................... 3-2
3.3.1 Auto picture initial setting ................................................ 3-2
3.4 Demodulator circuit ............................................................... 3-2
3.4.1 Separation ...................................................................... 3-2
4. CHARTS AND DIAGRAMS
NOTES OF SCHEMATIC DIAGRAM .......................................... 4-1
CIRCUIT BOARD NOTES ........................................................... 4-2
4.1 BOARD INTERCONNECTIONS ........................................... 4-3
4.2 MAIN (VIDEO/AUDIO) SCHEMATIC DIAGRAM .................. 4-5
4.3 MAIN (SYSCON) SCHEMATIC DIAGRAM ........................... 4-7
4.4 MAIN (SW. REG) SCHEMATIC DIAGRAM........................... 4-9
4.5 MAIN (TUNER) SCHEMATIC DIAGRAM .............................4-11
4.6 MAIN (FMA/DEMOD) SCHEMATIC DIAGRAM .................. 4-13
4.7 MAIN (FRONT) AND MINI FRONT SCHEMATIC DIAGRAMS . 4-15
4.8 MAIN (TERMINAL) SCHEMATIC DIAGRAM ...................... 4-17
4.9 ADV. JOG SCHEMATIC DIAGRAM [HR-VP790U] ............. 4-18
4.10 CONNECTION SCHEMATIC DIAGRAM ........................ 4-19
4.11 MAIN CIRCUIT BOARD .................................................. 4-21
4.12 REMOTE CONTROLLER SCHEMATIC DIAGRAM ....... 4-24
4.13 FDP GRID ASSIGNMENT AND ANODE CONNECTION 4-25
4.14 WAVEFORMS ................................................................. 4-26
4.15 VOLTAGE CHARTS ........................................................ 4-27
4.16 CPU PIN FUNCTION ...................................................... 4-28
4.17 SYSTEM CONTROL BLOCK DIAGRAM ........................ 4-29
4.18 VIDEO BLOCK DIAGRAM .............................................. 4-31
4.19 AUDIO BLOCK DIAGRAM .............................................. 4-33
5. PARTS LIST
5.1 PACKING AND ACCESSORY ASSEMBLY <M1> ............... 5-1
5.2 FINAL ASSEMBLY <M2> ..................................................... 5-2
5.3 MECHANISM ASSEMBLY <M4> ......................................... 5-4
5.4 ELECTRICAL PARTS LIST ................................................... 5-6
MAIN BOARD ASSEMBLY <03> ............................................... 5-6
A/C HEAD BOARD ASSEMBLY <12> ...................................... 5-11
MINI FRONT BOARD ASSEEMBLY(HR-VP690U/U(C))<28> .5-11
ADV.JOG BOARD ASSEEMBLY(HR-VP790U/U(C))<38> .......5-11
LOADING MOTOR BOARD ASSEMBLY <55> ........................5-11
C.BOX/R.PAUSE BOARD ASSEMBLY(HR-VP790U/U(C)<99> ... 5-11
The following table lists the differing points between Models (HR-VP690U/U(C) and HR-VP790U/U(C)) in this series.
HR-VP690U/U(C) HR-VP790U/U(C)
JOG/SHUTTLE NOT USED USED
FOOT LINE – GOLD
REAR VIDEO/AUDIO IN NOT USED USED
VCR PLUS+ VCR+ VCR+ C3
REC LINK/INPUT NOT USED USED/L1
CABLE BOX OR DBS.BOX OR SAT CTL NOT USED USED
PAUSE/AV COMPU TERMINAL NOT USED USED
CABLE MOUSE TERMINAL NOT USED USED
CABLE MOUSE NOT USED COUPON

Important Safety Precautions
Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes of the
countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions
when a set is being serviced.
Fig.1
1. Locations requiring special caution are denoted by labels and in-
scriptions 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 serv-
ice manuals.
2. Parts identified by the symbol and shaded ( ) parts are
critical for safety.
Replace only with specified part numbers.
Note: Parts in this category also include those specified to com-
ply with X-ray emission standards for products using
cathode ray tubes and those specified for compliance
with various regulations regarding spurious radiation
emission.
3. Fuse replacement caution notice.
Caution for continued protection against fire hazard.
Replace only with same type and rated fuse(s) as specified.
4. Use specified internal wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
5. Use specified insulating materials for hazardous live parts. Note
especially:
1) Insulation Tape 3) Spacers 5) Barrier
2) PVC tubing 4) Insulation sheets for transistors
6. When replacing AC primary side components (transformers, power
cords, noise blocking capacitors, etc.) wrap ends of wires securely
about the terminals before soldering.
Power cord
Fig.2
10. Also check areas surrounding repaired locations.
11. Products using cathode ray tubes (CRTs)
In regard to such products, the cathode ray tubes themselves, the
high voltage circuits, and related circuits are specified for compli-
ance with recognized codes pertaining to X-ray emission.
Consequently, when servicing these products, replace the cath-
ode ray tubes and other parts with only the specified parts. Under
no circumstances attempt to modify these circuits.
Unauthorized modification can increase the high voltage value and
cause X-ray emission from the cathode ray tube.
12. Crimp type wire connector
In such cases as when replacing the power transformer in sets
where the connections between the power cord and power trans-
former primary lead wires are performed using crimp type connec-
tors, if replacing the connectors is unavoidable, in order to prevent
safety hazards, perform carefully and precisely according to the
following steps.
1) Connector part number : E03830-001
2) Required tool : Connector crimping tool of the proper type which
will not damage insulated parts.
3) Replacement procedure
(1) Remove the old connector by cutting the wires at a point
close to the connector.
Important : Do not reuse a connector (discard it).
Fig.7
cut close to connector
Fig.3
(2) Strip about 15 mm of the insulation from the ends of the
wires. If the wires are stranded, twist the strands to avoid
frayed conductors.
15 mm
Fig.4
(3) Align the lengths of the wires to be connected. Insert the
wires fully into the connector.
Connector
Metal sleeve
Fig.5
(4) As shown in Fig.6, use the crimping tool to crimp the metal
sleeve at the center position. Be sure to crimp fully to the
complete closure of the tool.
1
•Precautions during Servicing
7. Observe that wires do not contact heat producing parts (heatsinks,
oxide metal film resistors, fusible resistors, etc.)
8. Check that replaced wires do not contact sharp edged or pointed
parts.
9. When a power cord has been replaced, check that 10-15 kg of
force in any direction will not loosen it.
1.25
2.0
5.5
Crimping tool
Fig.6
(5) Check the four points noted in Fig.7.
Not easily pulled free Crimped at approx. center
of metal sleeve
Conductors extended
Wire insulation recessed
more than 4 mm
S40888-01

•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 exter-
nally 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 acces-
sible parts of the set (RF terminals, antenna terminals, video and audio input and output terminals,
microphone jacks, earphone jacks, etc.). See table 1 below.
3. Clearance distance
When replacing primary circuit components, confirm specified clearance distance (d), (d’) be-
tween soldered terminals, and between terminals and surrounding metallic parts. See table 1
below.
4. Leakage current test
Confirm specified or lower leakage current between earth ground/power cord plug prongs and
externally exposed accessible parts (RF terminals, antenna terminals, video and audio input and
output terminals, microphone jacks, earphone jacks, etc.).
Measuring Method : (Power ON)
Insert load Z between earth ground/power cord plug prongs and externally exposed accessible
parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and following
table 2.
5. Grounding (Class 1model 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.
Fig. 10
Fig. 9
Fig. 8
Table 1 Specifications for each region
Table 2 Leakage current specifications for each region
Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
2
S40888-01
ab
c
V
A
Externally
exposed
accessible part
Z

1-1
SECTION 1
DISASSEMBLY
1.3 Disassembly/assembly method
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 re-
verse order. Bend, route and dress the flat cables as they
were originally laid.
1.2
How to read the disassembly and assembly
Note:
•
The bracketed ( ) WR of the connector symbol are as-
signed nos. in priority order and do not correspond to
those on the spare parts list.
(5) Adjustment information for installation
Top cover, Bracket
Front panel assembly
Drum assembly
Mechanism assembly
Mini front board assembly,
Main board assembly
[1]
[2]
[3]
[4]
[5]
Step/
Loc No.
Part Name Fig.
No. Point Note
-----------------
[1] Top cover, D1 2(S1a)
Bracket 2(S1b)
[2] Front panel assembly D2 CN7001(WR2a) <Note 2a>
[HR-VP790U/U(C)], <Note 2b>
7(L2a) <Note 2c>
[3] Drum assembly D3 CON1(WR3a), <Note 2c>
CN1(WR3b),
(S3a), (S3b), (S3c)
[4] Mechanism assembly D4 CN2001(WR4a), <Note 2c>
(S4a), (S4b), <Note 4a>
(S4c), (S4d)
[5] Mini front board D5 2(L5a), <Note 2c>
assembly CN7001(WR5a)
[HR-VP690U/U(C)]
Main board assembly (S5a), (S5b)
(1) (2) (3) (4) (5)
Step/
Loc No.
Part Name Fig.
No. Point Note
[1] Top cover, D1 4(S1a),(S1b),3(L1a), <Note 1a>
2(SD1a),(P1a),(W1a),
CN1(WR1a),
Bracket 2(S1c)
<Example>
(1) Order of steps in Procedure
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,
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 2a>
• When reattaching the Front panel assembly, make sure that
the door opener “a” of the Cassette holder assembly is low-
ered in position prior to the reinstallation.
<Note 2b>
• When reattaching the Front panel assembly, pay careful at-
tention to the switch lever not to make it touch the switch
knob “b” of the Main board assembly from the side.
<Note 2c>
• 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) re-
taining the Mechanism assembly, please refer to the “Pro-
cedures for Lowering the Cassette holder assembly”(See
on page 1-2).
• When reattaching the Mechanism assembly to the Main
board assembly, take care not to damage the sensors on
the Main board assembly.
-----------------

1-2
Fig. D1 Fig. D3
Fig. D2
Fig. 1
Fig. 2
Fig. 3
(A)
(B)
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 un-
screwed when removing the Mechanism assembly.
[1] Top cover
(S1a)
(S1a)
(S1b)
Bracket
[1]
(S1b)
Procedures for Lowering the Cassette holder assembly
<Note 2a>
WR2a [HR-VP790U/U(C)]
<Note 2c>
<Note 2b>
CN7001
“a”
“b”
(L2a)
(L2a)
(L2a)
[2]
Front panel
assembly
(S3b)
[3]
Drum
asembly
CN1
CON1
WR3a
<Note 2c>
(L3a)
(L3b)
(P3)
Roller arm
assy
Inertia plate
(L3c)
WR3b
<Note 2c>
Cleaner assy
Not used
Not used
(S3a) (S3c)
Note:
When installing the Drum assembly, secure the screws (S3a to
S3c) in the order of a, b, c.
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.

1-3
Fig. D4 Fig. D5
[4]
Mechanism
assembly
CN2001
Q3002
End sensor
<Note 4a>
WR4a
<Note 2c>
(S4b)
<Note 4a>
(S4a)
<Note 4a>
(S4c)
(S4d)
D3001
LED
<Note 4a>
[5]
Main board
assembly
(L5b)
CN7001
[5] Mini front board assembly
[HR-VP690U/U(C)]
WR5a
<Note 2c>
(L5a)
(L5a)
(S5a)
Note:
When installing the Mechanism assembly, secure the screws
(S4a to S4b) in the order of a, b.

1-4
Fig. 1-4-1a
TP7001
TEST
CN7001
To ADV. Jog
[HR-VP790U/U(C)]
To Mini front board
assembly
[HR-VP690U/U(C)]
TPGND
CP5302
CP4001
TP106
PB.FM
VR6502
SEPARATION 2
TP2253
A.PB.FM
TP4001
CTL.P
TP111
D.FF
Main board
assembly
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 cir-
cuit boards, take out the major parts from the chassis as-
sembly.
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 “Proce-
dures for lowering the Cassette holder assembly”of 1.3
Disassembly/assembly method.)
(3) Remove the combined Mechanism and Main board as-
semblies.
(4) Connect the wires and connectors of the major parts that
have been removed in step (1). (Refer to Fig.1-4-1a.)
(5) Place the combined Mechanism and Main board assem-
blies upside down.
(6) 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 Disas-
sembly/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 assem-
blies. 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 in-
operative status.
•In order to diagnose the playback or recording of the
cassette tape, set the Mechanism assembly to the re-
quired 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.
•The mechanism and board assemblies of this unit are
attached by connectors only.
When carrying out a diagnosis or repair of the boards
in the “Service position”, make sure that the connec-
tors are not disconnected.
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 Main board
assembly with a jump wire.
(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 opera-
tions 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.

1-5
1.7 Emergency display function
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 mo-
ment an emergency occurred can also be confirmed.
Fig. 1-7a Jig RCU [PTU94023B]
(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 descrip-
tion”.
• For the EMG detail information <1> , see “1.7.4 EMG de-
tail information <1> ”.
• For the EMG detail information <2> , see “1.7.5 EMG de-
tail 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.
<Example 1> E : 01 : 03
Previous EMG
Latest EMG
No EMG record
<Example 2> E : ––: ––
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:**:**”.
INITIAL MODE
DATA CODE
CUSTOM CODE
43: A CODE
53: B CODE
[Data transmitting method]
Depress the “”( 3 ) button
after the data code is set.
Jig RCU
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).
FDP display model
[FDP display]
0 : 00 : 00
E:** :**
*1: *2 : 34
*5: *6 : *7
E: **:**
*1: *2 : 34
*5: *6 : *7
EMG detail information <2>
EMG detail information <2>
EMG detail information <1>
EMG detail information <1>
EMG content display
(E:Latest:Previous)
Normal display
OSD display model
[OSD display]
EMG EMG content display
(E:Latest:Previous)
FDP (7segment LED) display model
[FDP display]
0: 00
E: **
1: **
2: *1
3: *2
4: 34
5: *5
6: *6
7: *7
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-02e)