JVC HR-J291EA, HR-J291MS, HR-J297MS, HR-J695EA Service Manual
SERVICE MANUAL
VIDEO CASSETTE RECORDER
HR-J291EA, HR-J291MS,
HR-J297MS, HR-J695EA
Regarding service information other than these sections, refer to the service manual No. 82915 (HR-J290EU).
Also, be sure to note important safety precautions provided in the service manual.
SPECIFICATIONS
GENERAL
Power : 110 V – 240 Vd, 50 Hz/60 Hz
Power consumption
Power on : Approx. 12 W
Standby mode : 3.0 W
Video Head system
HR-J695EA : DA4 (Double Azimuth) head helical
HR-J291EA : Rotary two-head helical scan system
Tape speed
(SP) : 23.39 mm/sec
(LP) : 11.69 mm/sec
Tape format : Tape width 1/2"
Maximum recording time
(SP) : 240 min. with E-240 video cassette
(LP) : 480 min. with E-240 video cassette
Rewind time : Approx. 180 (±30) sec. with E-180
Dimensions (W x H x D) : 360 mm x 94.5 mm x 270 mm
Weight : 4.0 kg
Operating temperature : 5°C to 35°C
Operating humidity : Less than 80 %
Timer : 24 hours display type
VIDEO
Signal system : PAL-type colour signal and CCIR
Recording Format : PAL/MESECAM/NTSC 3.58/
RF reception
HR-J695EA : PAL B/G, SECAM D/K
HR-J291EA : PAL B/G
RF OUT : PAL B/G
RF modulator : UHF channels 22 – 68 (Adjustable)
Input level : VIDEO IN (RCA type)
Output level : VIDEO OUT (RCA type)
Signal-to-noise ratio : More than 43 dBm
(The specifications shown pertain specifically to the model HR-J291EA, HR-J695EA.)
AUDIO
scan system
(12.7 mm high density VHS tape)
cassette
monochrome signal, 625 lines
50 fields
NTSC 4.43
1.0 Vp-p, 75 Ω, unbalanced
1.0 Vp-p, 75 Ω, unbalanced
Input level : AUDIO IN (RCA type)
Output level : AUDIO OUT (RCA type)
Audio track
HR-J695EA : Mono track and Hi-Fi track
HR-J291EA : Mono track
Audio frequency response
Normal audio : 100 Hz to 10,000 Hz
Hi-Fi audio* : 20 Hz to 20,000 Hz
* HR-J695EA only
Audio signal to noise ratio
Normal audio : More than 43 dB (JIS A filter)
Hi-Fi audio* : More than 70 dB (JIS A filter)
* HR-J695EA only
Audio dynamic range [HR-J695EA only]
Hi-Fi audio : More than 85 dB (JIS A filter)
ACCESSORIES
Provided accessories : RF cable,
Specifications shown are for SP mode unless specified otherwise.
E. & O.E. Design and specifications subject to change without
notice.
–6.0 dBm, more than 47 kΩ
–6.0 dBm, less than 1 kΩ
(–6/+3 dBm)
(–3/+3 dBm)
Infrared remote control unit,
“R3” battery x 2
HR-J291EA,HR-J291MS,HR-J297MS,HR-J695EA V15A1/A11/D1
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD
No.82940
August 2002
TABLE OF CONTENTS
SECTION 1
SUMMARY
KEY TO ABBREVIATIONS . . . . . . . . . . . . . . . . 1-1
IMPORTANT SAFETY PRECAUTIONS . . . . . . . . 1-2
PROPOSAL FOR APPL YING SHORT
PROTECTION . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
SERVICE NOTICE ON REPLACING EEPROM . .1-5
SERVICE INFORMATION FOR EEPROM
IC SETTING . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . 1-7
SECTION 2
CABINET & MAIN CHASSIS
SERVICE METHOD . . . . . . . . . . . . . . . . . . . . . 2-1
EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . 2-2
1. Cabinet & Main Frame Section . . . . . . . . . . . . . 2-2
2. Packing & Accessory Section . . . . . . . . . . . . . . 2-3
CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . .3-30
1. Power Circuit Diagram . . . . . . . . . . . . . . . . . . . .3-30
2. Tuner, NICAM, A2 Circuit Diagram . . . . . . . . . . .3-32
3. A/V Circuit Diagram . . . . . . . . . . . . . . . . . . . . . .3-34
4. System Circuit Diagram . . . . . . . . . . . . . . . . . . .3-36
5. Hi-Fi Circuit Diagram . . . . . . . . . . . . . . . . . . . . .3-38
• WAVEFORM . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-40
• CIRCUIT VOLTAGE CHART . . . . . . . . . . . . . . . .3-42
PRINTED CIRCUIT BOARD DIAGRAMS . . . . .3-46
1. MAIN P.C.Board . . . . . . . . . . . . . . . . . . . . . . . .3-46
SECTION 4
MECHANISM
Refer to the service manual No.82915 (HR-J290EU).
SECTION 5
REPLACEMENT PARTS LIST
SECTION 3
ELECTRICAL
ELECTRICAL ADJUSTMENT POINTS
ARRANGEMENT . . . . . . . . . . . . . . . . . . . . . . . .3-1
ELECTRICAL ADJUSTMENT PROCEDURES . . 3-2
1. Servo Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
ELECTRICAL TROUBLESHOOTING GUIDE . . . 3-4
1. Power Circuit(SMPS) . . . . . . . . . . . . . . . . . . . . . 3-4
2. Servo Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
3. System & Front Panel Circuit . . . . . . . . . . . . . . .3-10
4. Y/C Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13
5. Tuner/IF Circuit . . . . . . . . . . . . . . . . . . . . . . . . .3-17
6. Hi-Fi Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-20
BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . .3-22
1. Power Block Diagram . . . . . . . . . . . . . . . . . . . .3-22
2. Tuner/IF, NICAM & A2 Block Diagram . . . . . . . .3-24
3. Y/C Block Diagram . . . . . . . . . . . . . . . . . . . . . .3-26
4. Hi-Fi Block Diagram . . . . . . . . . . . . . . . . . . . . .3-27
5. System Block Diagram . . . . . . . . . . . . . . . . . . .3-28
5.1 EXPLODED VIEW. . . . . . . . . . . . . . . . . . . . . . . .5-1
5.2 REPLACEMENT PARTS LIST. . . . . . . . . . . . . . .5-4
SECTION1 SUMMARY
KEY TO ABBREVIATIONS
A AC :Alternating Current
B B :Base
C C :Capacitor, Chroma, Collector
D D :Drum, Digital, Diode, Drain
E E :Emitter
F F :Fuse
G GEN :Generator
H H :High, Horizontal
I IC :Integrated Circuit
L L :Low, Left, Coil
ACC :Automatic Color Control
ACSS :Automatic Channel Setting System
ADJ :Adjust
A/E :Audio Erase
AFC :Automatic Frequency Control
AFT :Automatic Fine Tuning
AGC :Automatic Gain Control
A.H.SW :Audio Head Switch
ALC :Automatic Level Control
AM :Amplitude Modulation
AMP :Amplifier
ANT :Antenna
APC :Automatic Phase Control
ASS’Y :Assembly
AUX :Auxiliary
BGP :Burst Gate Pulse
BPF :Bandpass Filter
BS :Brodcasting Satellite
BW or B/W :Black and White
CAN :Cancel
CAP :Capstan
CAP.BRK :Capstan Brake
CAP.RVS :Capstan Reverse
CATV :Cable Television
CBA :Circuit Board Assembly
CCD :Charge Coupled Device
C.CTL :Chro Control, Capstan Control
CFG :Capstan Frequency Generator
CHROMA :Chrominance
CNR :Chroma Noise Redution
COMB :Combination
COMP :Comparator
CONV :Converter
C.ROT SW :Color Rotary Switch
CS :Chip Selcet
C.SYNC :Composite Synchronization
CTL DIV :Control Divide
CUR :Current
CYL :Cylinder
D.ADJ :Drum Adjust
DC :Direct Current
D.CTL :Drum Control
DEMOD :Demodulator
DET :Detector
DEV :Deviation
DHP :Double High Pass
DIGITRON :Digital Display Tube
DL :Delay line
DOC :Drop Out Compensator
DUB :Dubbing
D.V SYNC :Dummy Vertical Synchronization
EE :Electric to Eletric
EMPH :Emphasis
ENA :Enable
ENV :Envelope
EP :Extended Play
EQ :Equalizer
EXP :Expander
FB :Feed Back
FBC :Feed Back Clamp
FE :Full Erase
FG :Frequency Generator
FL :Filter
FM :Frequency Modulation
F/R :Front/Rear
FS :Frequency Synthesizer
FSC :Subcarrier Frequency
F/V :Frequency Voltage
IF :Intermediate Frequency
INS :Insert
LD :LED
LD VTG CTL
LECHA :Letter Character
L.M :Level Meter
LP :Long Play
Comb Filter
Composite
Compensation
:Loading Voltage Control
M MAX :Maximum
N NR :Noise Reduction
O OSC :Oscillator
P PB :Playback
Q Q :Transistor
R R :Resistor, Right
S S :Serial
T T :Coil
U UHF :Ultra High Frequency
V V :Volt, Vertical
W W :Watt
X X-TAL :Crystal
Y Y/C :Luminance/Chrominance
Z ZD :Zener Diode
LPF :Low Pass Filter
MD :Modulator
MECHA.CTL
MIC :Microphone
MIN :Minimum
MIX :Mixer, Mixing
M.M. :Monostable, Multivibrator
MMV :Mono Multi Vibrator
MOD :Modulation, Modulator
MODEM :Modulator-Demodulator
MPX :Multiplex
OSD :On Screen Display
PCB :Printed Circuit Board
P.CTL :Power Control
PRE-AMP :Preamplifier
P.F :Power Failure
PG :Pulse Generator
PLL :Phase Locked Loop
PREM.DET :Premire Detect
P.P :Peak-to-Peak
PS :Phase Shift
PWM :Pulse Width Modulation
PWR CTL :Power Control
QH :Quasi Horizontal
QSR :Quick Setting Record
QTR :Quick Timer Record
QV :Quasi Vertical
RE(or RC) :Remocon, Receiver
REC :Recording
REC S ‘H’ :Record Start ‘Hight’
REF :Reference
REG :Regulated, Regulator
REMOCON :Remote Control(unit)
RF :Radio Frequency
R/P :Record/Playback
RTC :Reel Time Counter
S.ACCEL :Slow Accel
SAOP :Second Audio Program
SC :Scart, Simulcast
S.DET :Secam Detect
SH :Shift
SHARP :Sharpness
SIF :Sound Inter mediate Frequency
SLD :Side Locking
S/N :Signal to Noise Ratio
SP :Standard Play
ST :Stereo
SUB :Subtract, Subcarrier
SW or S/W :Switch
SYNC :Synchronization
SYSCON :System Control
TP :Test Point
TR :Transistor
TRK :Tracking
TRANS :Transfor mer
TU :Tuner, Take-up
UNREG :Unregulated
VA :Always Voltage
VCO :Voltage Controlled Oscillator
VGC :Voltage Gain Control
VHF :Very High Frequency
V.H.SW :Video Head Switch
VISS :VHS Index Search
VPS :Video Program System
VR :Variable Resistor or Volume
V-SYNC :Vertical Synchronization
VTG :Voltage
VV :Voltage to Voltage
VXO :Voltage X-tal Oscillator
WHT :White
W/O :With out
YNR :Luminance Noise Reduction
:Mechanism Control
1-1
Important Safety Precautions
cut close to connector
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.
v
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).
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.
Metal sleeve
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
v
Safety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been
returned to original positions, Afterwards, perform the following tests and confirm the specified values in order to verify 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.
Chassis
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.
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
Exposed accessible part
Grounding Specifications
Region
USA & Canada
Europe & Australia
Externally
exposed
accessible part
Grounding Impedance (Z)
d
d'
≤
Z 0.1 ohm
≤
Z 0.5 ohm
Power cord,
primary wire
Z
V
Fig. 9
ab
c
Milli ohm meter
Fig. 10
AC Line Voltage
100 V
100 to 240 V
110 to 130 V
110 to 130 V
200 to 240 V
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.
Region
Japan
USA & Canada
Europe & Australia R 10 MΩ/500 V DC
Region Load Z
Japan
USA & Canada
Europe & Australia
Table 2 Leakage current specifications for each region
Insulation Resistance (R)
≤
R 1 MΩ/500 V DC
≥≥
1 MΩ R 12 MΩ/500 V DC
≤
Table 1 Specifications for each region
1 kΩ
0.15 µF
1.5 kΩ
2 kΩ
50 kΩ
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
i 1 mA rms Exposed accessible parts
i 0.5 mA rms
i 0.7 mA peak
i 2 mA dc
i 0.7 mA peak
i 2 mA dc
2
≤
≤
≤
≤
≤
≤
(Class 2)
(Class 1)
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
Exposed accessible parts
Antenna earth terminals
Other terminals
S40888-01
PROPOSAL FOR APPLYING SHORT PROTECTION
• The Contents of Examination
As all the IC that is applied to VCR is controlled by IIC, mutual communication, if Vcc of IC is short or open
with detecting ‘Acknowledge’ data of the specific IC according to each power(5V, 5VT) µ-COM gets unable to
detect ‘ACK’ data.
µ-COM regards this case as abnormal one and if it can’t detect ‘ACK’ data for a certain time(3.5 sec) the signal of ‘Power Control’ and ‘Timer Control’ are switched to ‘Low’. As a result POWER Switching
generating heat and fire.
Conception
BLOCK Diagram
5V SW
SLAVE with 5V
TIMER
CONTROL
TR is kept from
SLAVE with 5V
• POWER for each IC
5.2V
5.3VA
IIC BUS
5V SW
MASTER
POWER
CONTROL
AVCP IC
Hi-Fi IC
TUNER
A2 IC
Power Control
1-4
SERVICE NOTICE ON REPLACING EEPROM
In case that defective EEPROM of PAL models is replaced, to operate these sets from the initial state MP KEY
must be repaired as well before delivering to the customer.
If MP KEY isn’t repaired the setting of RF OUT channel or LANGUAGE might be different from that for custormer’s country.
•MP KEY : In case of PAL VCR if holding the REC button on the front panel and the CLEAR button on the
remote control handset for 5 ~ 7 seconds with power being switch all and no tapes,
OK is displayed at FLD for FLD models and LED becomes on for LED CLOCK models.
This is the state that initializing EEPROM is finished.
(In case of PAL VCP if holding the REC button on the front panel and the MENU button on the
remote control handset for 5 ~ 7 seconds with power being off and no tapes, All the LED DOTs
become on. This is the state that initializing EEPROM is finished.)
•MP KEY's function : MP KEY sets EEPROM's data up to the initial state.
REC
VCR
OK
TIMER
AM
• FLD MODEL:
MP KEY “OK”
• LED CLOCK MODEL:
MP KEY Switch all on a Light
• LED DOT MODEL:
MP KEY Switch all on a Light
1-5
SERVICE INFORMATION FOR EEPROM IC SETTING
EEPROM option code No. setting EEPROM option code No. setting procedure
NAME HEX BINARY
OPT1 00 00000000
OPT2 00 00000000
OPT3 00 00000000
WR : OK I : EXIT MOVE :
EDIT :
MASKROM : R00
EEPROM : R00
LG CODE
MODEL NAME HEX BINARY
HR-J695EA OPTION1 10 00000000
OPTION2 61 00000000
OPTION3 44 00000000
HR-J291EA OPTION1 10 00000000
OPTION2 51 00000000
OPTION3 44 00000000
HR-J291MS OPTION1 00 00000000
OPTION2 50 00000000
OPTION3 44 00000000
HR-J297MS OPTION1 00 00000000
OPTION2 50 00000000
OPTION3 44 00000000
WR : OK I : EXIT MOVE :
EDIT :
1. DETECT NEW EEPROM (OPTION EDIT SCREEN)
- After changing EEPROM, EEPROM EDIT is displayed in the field if pressing “PLAY”key on SET
and “0” Key on Remocon in the status of powering
OFF.
For JVC model, change a remocon key by using
following JIG key.
JVC MODEL : FRONT UP + FRONT FF
(LG/JVC CODE)
Option Screen → Change JVC Code →
Service JVC R/C
- Setup option data using the cursor Up/Down key
of a remote control.
2. EEPROM WRITED COMPLETE SCREEN
- Writes data on EEPROM by using REMOCON
"OK".
- If completing the option data screen with a menu
key, Powering Off is automatically done and the
option edit screen is arranged.
3. PG ADJUST
a) Insert the PAL SP Test Tape and play.
Note) Adjust the distance of X, pressing “PLAY”
key on SET and “0” key on Remocon after
the PALSP TEST TAPE is inseted.
In Initial Mode, “- -” is displayed in CLK and
LED is ON in DOT.
b) Press again “PLAY” key on SET and “0” key on
Remocon.
(“- -” is displayed in CLK and LED is blink in DOT.
Afer adjusting PG, LED is preserved as a).)
c) Connect the CH1 of the oscilloscope to the H/SW
and CD2 to the Video out for the VCR.
d) Trigger the mixed Video Signal of CH2 to the
CH1 H/SW(W714, W715), and then check the
distance (time difference), which is from the
selected A(B) Head point of the H/SW(W714,
W715) signal to the starting point of the vertical
synchronized signal, to 6.5H ± 0.5H (416µs,
1H=30.0µs).
4. EEPROM INITIAL
- SETUP is displayed in the field if pressing the
FRONT REC KEY with the remocon number
"CLEAR" key pressed in the status of powering
Off.
- AUT O SEARCH is done since the initial screen of
ACMS is serviced if powering On.
- Check basic operation (PLAY/RECORD...)
1-6
SPECIFICATIONS
General
Power : 100~240V, 50/60Hz
Power consumption : Approx. 12 watts(Energy Saving mode : 3 watts)
Video Head system : Rotary 2heads, helical scanning system
(HR-J291EA/HR-J291MS/HR-J297MS)
Double azimuth 4 heads, helical scanning system
(HR-J695EA)
Tape speed : 23.39 mm/sec (SP mode)11.69 mm/sec(LP mode)
Tape format : Tape width 1/2” (12.7 mm high density VHS tape)
Maximum recording time : 4 hours in SP mode/8 hours in LP mode (with E-240 tape)
Rewind time : Approx. 150 sec. (with E-180 tape)
Dimensions (W X H X D) : 360 x 94.5 x 230 mm
Weight : 9.0 lbs. (4.0 kg)
Operating temperature : 41°F-95°F (5°C-35°C)
Operating humidity : Less than 80%
Timer : 24 hours display type
Video
Input level : VIDEO IN (RCA type)
1.0 Vp-p, 75 ohm, unbalanced
Output level : VIDEO OUT (RCA type)
1.0 Vp-p, 75 ohm, unbalanced
Signal to noise ratio : More than 43 dBm
RF Modulator : UHF 28~68(Adjustable)
Audio
Input level : AUDIO IN (RCA type)
-6.0dBm, more than 47kΩ
Output level : AUDIO OUT (RCA type)
-6.0 dBm, less than 1kΩ
Track Mono track & Hi-Fi track
Frequency response : Normal : 100 Hz - 10 kHz(-6/+3 dB)
Hi-Fi : 20 Hz - 20 kHz(3-/+3 dB)
Signal to noise ratio : Normal : More than 43 dBm(at SP mode)
Dynamic range : Hi-Fi : More than 70 dBm(at SP mode)
Hi-Fi : More than 85 dBm(at SP mode)
• Design and specifications are subject to change without notice.
:HR-J695EA Model only
1-7
SECTION2 CABINET & MAIN FRAME
SERVICE METHOD
(1) Disassembly Flow
Bottom Cover
Housing & Deck
Top Case
Front Panel
Assembly
Main C.B.A
LED C.B.A
(2)Re-assembly Flow for service like Fig. 2-1
LED C.B.A
Main C.B.A
Housing & Deck
Assembly
(3)To check and replace Electrical parts
1 Disassemble the unit according to
No.1) Disassembly Flow.
2 Re-assemble the unit according to
No.2) Re-assembly Flow.
3 Place the unit like Fig. 2-1
4 Check and replace Electrical par ts.
NOTE :
1 Inser t Video Cassette Tape inversely like Fig. 2-1
to check and replace defective parts.
2 In disassembling and reassembling, be careful not
to damaged CST switch.
(Positioned Upside Down)
Housing y Mecanismo
C.B.A Princioal
Cassette Tape
(Upside Down)
Fig.2-1
2-1
1. Cabinet and Main Frame Section
462
5
250
EXPLODED VIEWS
NOTE) Refer to “SECTION 5 REPLACEMENT
A46
PARTS LIST” in order to look for the
part number of each part.
OPTIONAL PARTS
300
4
462
457
320
330
3
464
261
260
457
2
A00
A49
452
A42
A43
1
A
BCD
284
283
280
2-2
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