JVC HR-S9911U Service Manual
SERVICE MANUAL
VIDEO CASSETTE RECORDER
HR-S9911U
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
system scan 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
Input/Output : RCA connectors (IN x 2, OUT x 1)
S-video 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 time : Approx. 3 min.
ACCESSORIES
Provided accessories : Infrared remote control unit,
“AA” battery x 2,
Audio/video cable,
RF cable (F-type),
S-video cable (4-pin),
Controller
Specifications shown are for SP mode unless specified otherwise.
E. & O.E. Design and specifications subject to change without
notice.
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.
No. 82931
July 2002
TABLE OF CONTENTS
Section Title Page Section Title Page
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
1.4.2 Precautions for cassette loading in the
“Service position” ............................................................. 1-4
1.4.3 Cassette loading and ejection methods in 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
1.8 SERVICING THE VIDEO NAVIGATION FUNCTION............ 1-9
1.8.1 Copying the video navigation data .................................. 1-9
1.8.2 Erasing the video navigation data (Initialization) ............. 1-9
1.8.3 Factory setting level during shipment ............................ 1-10
2. MECHANISM ADJUSTMENT
Please see Service Manual No. 82805 (HR-S9800U).
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) AND AUDIO ERASE SCHEMATIC
DIAGRAMS .......................................................................... 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 (CONNECTION) SCHEMATIC DIAGRAM ............... 4-13
4.7 3D DIGITAL/4M SCHEMATIC DIAGRAM ........................... 4-14
4.8 TERMINAL SCHEMATIC DIAGRAM .................................. 4-17
4.9 DEMODULATOR SCHEMATIC DIAGRAM......................... 4-19
4.10 S-SUB SCHEMATIC DIAGRAM ...................................... 4-21
4.11 NAVIGATION SCHEMATIC DIAGRAM ............................ 4-23
4.12 SW/DISPLAY, REC SAFETY, JACK AND ADV.JOG
SCHEMATIC DIAGRAMS ............................................... 4-25
4.13 MAIN AND AUDIO ERASE CIRCUIT BOARDS .............. 4-27
4.14 3D DIGITAL/4M CIRCUIT BOARD .................................. 4-30
4.15
DEMODULATOR, S-SUB, SW/DISPLAY, REC SAFETY, JACK
AND ADV.JOG CIRCUIT BOARDS ..........................................
4.16 TERMINAL CIRCUIT BOARD ......................................... 4-33
4.17 NAVIGATION CIRCUIT BOARD ...................................... 4-34
4.18 REMOTE CONTROLLER SCHEMATIC DIAGRAM ......... 4-35
4.19 WAVEFORMS .................................................................. 4-36
4.20 VOLTAGE CHARTS ......................................................... 4-37
4.21 FDP GRID ASSIGNMENT AND ANODE CONNECTION 4-39
4.22 CPU PIN FUNCTION ....................................................... 4-40
4.23 SYSTEM CONTROL BLOCK DIAGRAM......................... 4-41
4.24 VIDEO BLOCK DIAGRAM ............................................... 4-43
4.25 AUDIO BLOCK DIAGRAM............................................... 4-47
4-31
5. PARTS LIST
3. ELECTRICAL ADJUSTMENT
Please see Service Manual No. 82805 (HR-S9800U).
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
3D D/4M BOARD ASSEMBLY <05> ....................................... 5-12
TERMINAL BOARD ASSEMBLY <06> ................................... 5-13
A/C HEAD BOARD ASSEMBLY <12> ..................................... 5-14
DEMOD BOARD ASSEMBLY <14> ........................................ 5-14
S-SUB BOARD ASSEMBLY <15> ........................................... 5-14
NAVIGATION BOARD ASSEMBLY <19> ................................ 5-15
SW/DISPLAY BOARD ASSEMBLY <28> ................................ 5-15
REC SAFETY BOARD ASSEMBLY <32> ............................... 5-16
S.JACK BOARD ASSEMBLY <36> ......................................... 5-16
ADV.JOG BOARD ASSEMBLY <38> ....................................... 5-16
AUDIO ERASE BOARD ASSEMBLY <46> ............................. 5-16
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)
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 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.
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
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 & Australia R 10 MΩ/500 V DC
Region Load Z
Insulation Resistance (R)
≤"
R 1 MΩ/500 V DC
≥"≥"
1 MΩ R 12 MΩ/500 V DC
≤"
Table 1 Specifications for each region
Grounding Specifications
Region
USA & Canada
Europe & Australia
Dielectric Strength
AC 1 kV 1 minute
AC 1.5 kV 1 miute
AC 1 kV 1 minute
AC 3 kV 1 minute
AC 1.5 kV 1 minute
(Class 2)
(Class 1)
Grounding Impedance (Z)
≤"
Z 0.1 ohm
≤"
Z 0.5 ohm
Clearance Distance (d), (d')
≤"
d, d' 3 mm
≤"
d, d' 4 mm
≤"
d, d' 3.2 mm
≤"
d 4 mm
≤"
d' 8 mm (Power cord)
≤"
d' 6 mm (Primary wire)
a, b, cLeakage Current (i)AC Line Voltage
100 V
110 to 130 V
110 to 130 V
220 to 240 V
Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
Japan
USA & Canada
Europe & Australia
Table 2 Leakage current specifications for each region
1 kΩ
0.15 µF
1.5 kΩ
2 kΩ
50 kΩ
2
≤"
i1 mA rms Exposed accessible parts
≤"
i 0.5 mA rms
≤"
i 0.7 mA peak
≤"
i2 mA dc
≤"
i 0.7 mA peak
≤"
i2 mA dc
Exposed accessible parts
Antenna earth terminals
Other terminals
S40888-01
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.
[1]
[2]
Top cover, Bracket
Front panel assembly,
ADV. Jog board assembly
[3]
[4]
[5]
Drum assembly
Mechanism assembly
REC safety board assembly,
SW/Display board assembly,
Jack board assembly
[6]
[7]
1.2
How to read the disassembly and assembly
Main board assembly
Bottom cover
<Example>
Step/
Loc No.
[1] Top cover, D1
(1) (2) (3) (4) (5)
Part Name
Bracket 2(S1c)
Fig.
No.
Point Note
4(S1a),(S1b),3(L1a), <Note 1a>
2(SD1a),(P1a),(W1a),
CN1(WR1a),
(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:
•
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
1.3 Disassembly/assembly method
Step/
Loc No.
[1] Top cover, D1 4(S1a)
[2] Front panel assembly D2 CN3012(WR2a) <Note 2a>
[3] Drum assembly D3 CON1(WR3a),
[4] Mechanism assembly D4 CN2001(WR4a), <Note 2b>
[5] REC safety board D5 (L5a), <Note 2b>
[6] Main board assemby D6 (S6a),3(S6b),2(S6c)
[7] Bottom cover D7 4(L7a), Foot (rear), <Note 7a>
Part Name
Bracket 2(S1c)
(ADV. Jog board assembly)
assembly, <Note 5a>
SW/Display board
assembly
Jack board assembly
Fig.
No.
Point Note
-----------------
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
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