JVC FS-H30 User manual

SERVICE MANUAL
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED No.22062
2003/5
COMPACT COMPONENT SYSTEM
2206220035FS-H30
TABLE OF CONTENTS
1 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
4 Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
COMPACT COMPONENT SYSTEM
Area Suffix
J -------------------- U.S.A.
C ------------------ Canada

1-2 (No.22062)
SPECIFICATION
Design and specifications are subject to change without notice.
Amplifier Output Power 20 W (10 W + 10 W) at 4 Ω(10% THD)
12 W per channel, min. RMS, driven into 4Ω
at from 80 Hz to 15 kHz with no more than
10% total harmonic distortion.
Audio input sensitivity/Impedance (at 1 kHz) AUX 500 mV/48.75 kΩ
Speakers/Impedance 4 Ω
Tuner FM tuning range 87.5 MHz - 108.0 MHz
AM tuning range 530 kHz - 1 710 kHz
CD player Dynamic range 85 dB
Signal-to-noise ratio 90 dB
Wow and flutter Immeasurable
Cassette deck Frequency response Normal (type I) 50 Hz - 15 000 Hz
Wow and flutter 0.15% (WRMS)
Speaker Speaker units Full range 8.0 cm (3 3/16 in.) cone ×1
Impedance 4 Ω
Dimensions (approx.) 135 mm ×203 mm ×190 mm (W/H/D)
(5 3/8 in. ×8 in. ×7 1/2 in.)
Mass (approx.) 1.7 kg (3.8 lbs) each
General Power requirement AC IN 120, 60 Hz
DC IN 12 V, 4 A
Power consumption 35 W (at operation)
3.0 W (on standby)
Dimensions (approx.) 412 mm ×208 mm ×275 mm (W/H/D)
(16 1/4 in. ×8 1/4 in. ×10 7/8 in.)
Mass (approx.) 6.5 kg (14.4 lbs)

(No.22062)1-3
SECTION 1
Precautions
1.1 Safety Precautions
(1) This design of this product contains special hardware and
many circuits and components specially for safety purpos-
es. For continued protection, no changes should be made
to the original design unless authorized in writing by the
manufacturer. Replacement parts must be identical to
those used in the original circuits. Services should be per-
formed by qualified personnel only.
(2) Alterations of the design or circuitry of the product should
not be made. Any design alterations of the product should
not be made. Any design alterations or additions will void
the manufacturers warranty and will further relieve the
manufacture of responsibility for personal injury or property
damage resulting therefrom.
(3) Many electrical and mechanical parts in the products have
special safety-related characteristics. These characteris-
tics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by us-
ing replacement components rated for higher voltage, watt-
age, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Ser-
vice Manual. Electrical components having such features
are identified by shading on the schematics and by ( ) on
the Parts List in the Service Manual. The use of a substitute
replacement which does not have the same safety charac-
teristics as the recommended replacement parts shown in
the Parts List of Service Manual may create shock, fire, or
other hazards.
(4) The leads in the products are routed and dressed with ties,
clamps, tubings, barriers and the like to be separated from
live parts, high temperature parts, moving parts and/or
sharp edges for the prevention of electric shock and fire
hazard. When service is required, the original lead routing
and dress should be observed, and it should be confirmed
that they have been returned to normal, after reassem-
bling.
(5) Leakage shock hazard testing
After reassembling the product, always perform an isola-
tion check on the exposed metal parts of the product (an-
tenna terminals, knobs, metal cabinet, screw heads,
headphone jack, control shafts, etc.) to be sure the product
is safe to operate without danger of electrical shock.Do not
use a line isolation transformer during this check.
• Plug the AC line cord directly into the AC outlet. Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal parts of the cabinet, particular-
ly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage cur-
rent must not exceed 0.5mA AC (r.m.s.).
• Alternate check method
Plug the AC line cord directly into the AC outlet. Use an
AC voltmeter having, 1,000Ωper volt or more sensitivity
in the following manner. Connect a 1,500Ω10W resistor
paralleled by a 0.15µF AC-type capacitor between an ex-
posed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC
voltmeter.
Move the resistor connection to each exposed metal
part, particularly any exposed metal part having a return
path to the chassis, and measure the AC voltage across
the resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Voltage measured any must
not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5µ
mA AC (r.m.s.).
1.2 Warning
(1) This equipment has been designed and manufactured to
meet international safety standards.
(2) It is the legal responsibility of the repairer to ensure that
these safety standards are maintained.
(3) Repairs must be made in accordance with the relevant
safety standards.
(4) It is essential that safety critical components are replaced
by approved parts.
(5) If mains voltage selector is provided, check setting for local
voltage.
1.3 Caution
Burrs formed during molding may be left over on some parts
of the chassis.
Therefore, pay attention to such burrs in the case of pre-
forming repair of this system.
1.4 Critical parts for safety
In regard with component parts appearing on the silk-screen
printed side (parts side) of the PWB diagrams, the parts that are
printed over with black such as the resistor ( ), diode ( )
and ICP ( ) or identified by the " " mark nearby are critical
for safety. When replacing them, be sure to use the parts of the
same type and rating as specified by the manufacturer.
(This regulation dose not Except the J and C version)
Good earth ground
Place this
probe on
each expose
d
metal part.
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500 10W
0.15 F AC TYPE

1-4 (No.22062)
1.5 Importance administering point on the safety
Caution: For continued protection against risk of
fire, replace only with same type 1A/125V for
F901, 6.3A/125V for F902 and F903. This symbol
specifies type of fast operating fuse.
Precaution: Pour eviter risques de feux, remplacez
le fusible de surete de F901 comme le meme type
que 1A/125V, et 6.3A/125V pour F902 et F903.
Ce sont des fusibles suretes qui functionnes rapide.
^
C902
C901
C903
C904
CN901
D901
D902
D904
D903
D905
Z901
Z913
Z902
T901
J902
L901
R901
S901
Z912
B908
Z903
Z911
PP901
B910
B911
B914
B913
B916
B902
B901
B903
B904
B909
B907
B912
J901
B915

(No.22062)1-5
1.6 Preventing static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser
diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.6.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
Be careful to use proper grounding in the area where repairs are being performed.
(1) Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the
traverse unit (optical pickup) on it.
(2) Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
(3) Handling the optical pickup
• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical
pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily
destroy the laser diode.
1.7 Handling the traverse unit (optical pickup)
(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
(2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the
replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long
a time when attaching it to the connector.
(3) Handle the flexible cable carefully as it may break when subjected to strong force.
(4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.
1.8 Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for the CD pickup unit.
• Apply solder to the short land sections before the flexible wire is disconnected from the connector CN101 on the CD servo board.
(If the flexible wire is disconnected without applying solder, the CD pickup may be destroyed by static electricity.)
• In the assembly, be sure to remove solder from the short land sections after connecting the flexible wire.
1M
Conductive material
(conductive sheet) or iron palate
(caption)
Anti-static wrist strap
CN601 on
mechanism
board
Shorting round
Shorting round
Flexible wire

1-6 (No.22062)
1.9 Important for laser products
1.CLASS 1 LASER PRODUCT
2.DANGER : Invisible laser radiation when open and inter
lock failed or defeated. Avoid direct exposure to beam.
3.CAUTION : There are no serviceable parts inside the
Laser Unit. Do not disassemble the Laser Unit. Replace
the complete Laser Unit if it malfunctions.
4.CAUTION : The compact disc player uses invisible laser
radiation and is equipped with safety switches which
prevent emission of radiation when the drawer is open and
the safety interlocks have failed or are de
feated. It is dangerous to defeat the safety switches.
5.CAUTION : If safety switches malfunction, the laser is able
to function.
6.CAUTION : Use of controls, adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
REPRODUCTION AND POSITION OF LABEL and PRINT
WARNING LABEL and PRINT
!Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
Caution label

(No.22062)1-7
SECTION 2
Disassembly method
2.1 Main body
2.1.1 Removing the rear panel
(See Fig.1,2)
(1) From behind the body, remove the eight screws Aattach-
ing the rear panel.
(2) Turing the body upside down, remove the two screws Bat-
taching the rear panel, and remove.
Fig.1
Fig.2
A
A
A
A
BB
CC
Front panel assembly
Rear panel

1-8 (No.22062)
2.1.2 Removning the side panel (L) and (R)
(See Fig.2~5)
• Prior to performing the following procedure, remove the rear
panel.
(1) Turning the body upside down, remove the two screws C
attaching the front panel assembly.
(2) Turning the body initial position, open the CD door while
pressing the upper OPEN button.
(3) Moving the side panel (L) in the arrow direction, remove the
panel from the left side of the body.
(4) Moving the side panel (R) in the arrow direction, remove
the panel from the right side of the body.
Fig.3
Fig.4
Fig.5
Side panel (L)
Side panel (R)

(No.22062)1-9
2.1.3 Removing the CD player assembly
(See Fig.6,7)
• Prior to performing the following procedure, remove the rear
panel and the left and right side panels.
(1) Disconnect the card wires from the two connectors CN603
and CN604 on the CD servo control board.
(2) Remove the two screws Dattaching the front panel assem-
bly on the both sides.
(3) Release the two joints aon the both sides of the front panel
assembly.
(4) Move the CD player assembly in the direction of the arrow.
Fig.6
Fig.7
CD player assembly CD servo control board
CN604
D
aCN603
D
CD player assembly
a

1-10 (No.22062)
2.1.4 Removing the power amplifier board and heat sink
(See Fig.8~10)
• Prior to performing the following procedure, remove the rear
panel, the left and right side panels, and the CD player assem-
bly.
(1) Remove the five screws Eand Fattaching the heat sink.
(2) Disconnect the wire from connector CN901 on the power
supply board.
(3) Disconnect the card wire from connector CN305 on the
power amplifier board.
(4) Remove the screw Gattaching the power amplifier board.
(5) Disconnect the connector CN301 on the power amplifier
board, and release the two joints b.
REFERENCE:
Remove the screw F, then power amplifier board can be re-
moved without removing heat sink.
Fig.8
Fig.9
Fig.10
E
E
F
Heat sink
Power amplifier board
CN301
Power supply board
CN901
CN305
Power amplifier board
G
bb

(No.22062)1-11
2.1.5 Removing the tuner board
(See Fig.11)
• Prior to performing the following procedure, remove the rear
panel, the left and right side panels, and the CD player assem-
bly.
(1) Remove the screw Hattaching the tuner board from the
right side of the body.
(2) Disconnect the card wire from the connector CN1 on the
tuner board.
(3) Release the joint c, and remove the tuner board backward.
Fig.11
2.1.6 Removing the front panel assembly
(See Fig.12,13)
• Prior to performing the following procedure, remove the rear
panel the left and right side panels, the CD player assembly,
the power amplifier board.
(1) Disconnect the card wire from the connector CN714 on the
LCD system CPU board.
(2) Release the joint don the bottom of the front panel assem-
bly using a screwdriver, and remove the front panel assem-
bly toward the front.
Fig.12
Fig.13
H
Tuner board
CN1
c
LCD system CPU board
CN714
dFront panel assembly

1-12 (No.22062)
2.1.7 Remove the power transformer and power supply board
(See Fig.14,15)
• Prior to performing the following procedure, remove the rear
panel, the left and right side panels, the CD player assembly,
the power amplifier board and the tuner board.
(1) Remove the screw Iattaching the jack holder and release
joint e, and then remove jack holder.
(2) Remove the four screws Jattaching the power transformer
and power supply board.
Fig.14
Fig.15
I
Jack holder
e
J
J
Power transformer
Power supply board

(No.22062)1-13
2.1.8 Remove the cassette mechanism assembly
(See Fig.16,17)
• Prior to performing the following procedure, remove the front
panel assembly.
(1) Disconnect the card wire from the connector CN713 on the
LCD system CPU board.
(2) Remove the four screws Kand Lattaching the cassette
mechanism assembly, and remove.
Fig.16
Fig.17
Front panel assembly
LCD system CPU board
CN713
KL
Cassette mechanism assembly

1-14 (No.22062)
2.1.9 Remove the LCD system CPU board
(See Fig.18)
(1) Disconnect the wire from the connector CN716 on the LCD
system CPU board.
(2) Release the two joints fand pull out the LCD system CPU
board.
Fig.18
2.1.10 Removing the operating switch board
(See Fig.19,20)
• Prior to performing the following procedure, remove the front
panel assembly, the cassette mechanism assembly and the
LCD system CPU board.
(1) Remove the two screws Mattaching the operating switch
button.
(2) Remove the two screws Nattaching the operating switch
board, and remove.
Fig.19
Fig.20
f
LCD system CPU board
CN716
MOperating switch button
N
Operating switch board

(No.22062)1-15
2.2 Cassette mechanism assembly
2.2.1 Removing the Play/Record & Clear head
(See Fig.1~3)
(1) While moving the trigger arm on the right side of the head
mount in the direction of the arrow, turn the flywheel R
counterclockwise until the head mount comes ahead and
clicks.
(2) The head turns counterclockwise as you turn the flywheel
Rcounterclockwise (See Fig.2 and 3).
(3) Disconnect the flexible wire from connector CN31 on the
head amplifier & mechanism control board.
(4) Remove the spring from the back of the head.
(5) Loosen the azimuth screw for reversing attaching the head.
(6) Remove the head on the front side of the head mount.
Fig.1
Fig.2
Fig.3
Cassette mechanism assembly Fly wheelR
Trigger armHead mount
Head
Fly wheel R
Azimuth screw
for reversing
Flexible wire
Spring
CN31
Head amplifer & mecha control board
Head

1-16 (No.22062)
2.2.2 Removing the head amplifier & mechanism control board
(See Fig.4)
(1) Turn over the cassette mechanism assembly and remove
the three screws Aattaching the head amplifier & mecha-
nism control board.
(2) Disconnect the flexible wire from connector CN31 on the
head amplifier & mechanism control board.
(3) Disconnect connector CN32 of the head amplifier & mech-
anism control board from connector CN1 on the reel pulse
board.
REFERENCE:
If necessary, unsolder the 4-pin wire soldered to the main mo-
tor.
Fig.4
2.2.3 Removing the main motor
(See Fig.4~7)
(1) Remove the two screws B.
(2) Half raise the motor and remove the capstan belt from the
motor pulley.
ATTENTION:
Be careful to keep the capstan belt from grease. When reas-
sembling, refer to Fig.6 and 7 for attaching the capstan belt.
Fig.5
Fig.6
Fig.7
Head amplifier & mecha control board
AA
AB
CN31
CN32
4pin wire
Flexible wire
Main motor assembly
Main motor assembly
Capstan belt
Main motor assembly
Capstan belt
Motor pulley
Main motor assembly
Capstan belt
Fly wheel
Motor pulley

(No.22062)1-17
2.2.4 Removing the flywheel
(See Fig.8, 9)
• Prior to performing the following procedure, remove the head
amplifier & mechanism control board and the main motor as-
sembly.
(1) From the front side of the cassette mechanism, remove the
slit washers attaching the capstan shaft Land R. Pull out
the flywheels backward.
Fig.8
Fig.9
2.2.5 Removing the reel pulse board and solenoid
(See Fig.10)
• Prior to performing the following procedure, remove the head
amplifier & mechanism control board.
(1) Remove the screw C.
(2) Release the tab a, b, c, dand eretaining the reel pulse
board.
(3) Release the tab fand gattaching the solenoid on the reel
pulse board.
(4) The reel pulse board and the solenoid come off.
Fig.10
Fly wheel R Fly wheel L
Capstan shaft R Capstan shaft L
Fly wheel R
Slit washer
Fly wheel L
a
fg
bc d
e
C
Reel pulse board
Solenoid

1-18 (No.22062)
2.2.6 Reattaching the Play/ Record & Clear head
(See Fig.11~13)
(1) Reattaching the head mount assembly.
a) Change front of the direction cover of the head mount
assembly to the left (Turn the head forward).
b) Fit the bosses O', P', Q', U' and V' on the head mount
assembly to the holes Pand V, the slots O, Uand Q
of the mechanism sub assembly (See Fig.11 to 13).
CAUTION:
To remove the head mount assembly, turn the di-
rection cover to the left to disengage the gear. If the
gear can not be disengaged easily, push up the
boss Q' slightly and raise the rear side of the head
mounts slightly to return the direction lever to the
reversing side.
(2) Tighten the azimuth screw for reversing.
(3) Reattach the spring from the back of the Play / Record &
Clear head.
(4) Connect the flexible wire to connector CN31 on the head
amplifier & mechanism control board. Fig.11
Fig.12
Fig.13
P'
V'
O'
P'
V'
U' Q' Direction cove
r
Head mount assembly
Direction cove
r
Head mount assembly
O
U
V
PQ
Azimuth screw for reversing
Head mount
Spring
Flexible wire
Head amplifier &
mechanism control board
CN31
Head

(No.22062)1-19
SECTION 3
Adjustment
3.1 Adjustment method
Standard measurement position of volume
Function switch to Tape
Beat cut switch to Cut
Super Bass/Active hyper Bass to OFF
Bass Treble to Center
Adjustment of main volume to reference output
VOL : 28
Precautions for measurement
1. Apply 30pF and 33k to the IF sweeper output
side and 0.082 F and 100k in series to the
sweeper input side.
2. The IF sweeper output level should be made as
low as possible within the adjustable range.
3. Since the IF sweeper is a fixed device, there is no
need to adjust this sweeper.
4. Since a ceramic oscillator is used, there is no need
to perform any MIX adjustment.
5. Since a fixed coil is used, there is no need to adjust
the FM tracking.
6. The input and output earth systems are separated.
In case of simultaneously measuring the voltage in
both of the input and output systems with an
electronic voltmeter for two channels, therefore, the
earth should be connected particularly carefully.
7. In the case of BTL connection amp., the minus
terminal of speaker is not for earthing. Therefore, be
sure not to connect any other earth terminal to this
terminal. This system is of an BTL system.
8. For connecting a dummy resistor when measuring
the output, use the wire with a greater code size.
9. Whenever any mixed tape is used, use the band
pass filter (DV-12).
Measurement conditions
Power supply voltage
AC 120V ~ , 60Hz
Reference output : Speaker : 0.775V/4
: Headphone : 0.077V/32
Reference frequency and
input level ------------------------------ 1kHz, AUX : -8dBs
Measurement output terminal ------- at Speaker J3002
Load resistance --------------------------- 4
Radio Input signal
AM frequency --------------------------------------- 400Hz
AM modulation ---------------------------------------- 30%
FM frequency --------------------------------------- 400Hz
FM frequency deviation ------------------------ 22.5kHz
Measurement Instruments Required for
Adjustment
1. Low frequency oscillator
This oscillator should have a capacity to output
0dBs to 600 at an oscillation frequency of
50Hz-20kHz.
2. Attenuator impedance : 600
3. Electronic voltmeter
4. Distortion meter
5. Frequency counter
6. Wow & flutter meter
7. Test tape
VT703L : Head azimuth
VT712 : Tape speed and running unevenness
(3kHz)
VT724 : Reference level (1kHz)
8. Blank tape
TYPE : AC-225
TYPE : AC-514
9. Torque gauge : For play and back tension
FWD(TW2111A), REV(TW2121a) and
FF/REW(TW2231A)
10. Test disc: CTS-1000
Tuner section
FM tuning range: 87.5MHz~108.00MHz
AM tuning range: 530kHz~1,710kHz
Voltage applied to tuner +B : DC5.7V
VT : DC 12
V
Reference measurement
output 26.1mV(0.28V)/3
Input positions AM : Standard loop antenna
FM : TP1 (hot) and TP2 (GND)

1-20 (No.22062)
3.2 Cassette mechanism adjustment
Motor speed
VR37
BIAS adjust
VR31
Mecha control board
Head azinuth
adjustment screw
(Forward side)
Head azinuth
adjustment screw
(Reverse side)
Head azinuth
adjustment screw
(Forward side)
Head azinuth
adjustment screw
(Reverse side)
R/P head, Erase head
CN31
D1
FW100
R371
VR37
P1
SW1
SW6
CN1
SW2
SW5
IC1
C201
C102
C103
C105
C106
C107
C209
C110
C113
C121
C101
C202
C203
C205
C206
C207
C109
C210
C213
C221
C300
C301
C304
C306
C307
C308
C310
C313
C314
C316
C319
C331
C340
C341
C342
C371
C374
C376
CN31
CN33
CN34
D340
D375
IC32
IC33
L301
L303
Q302
Q305
Q342
Q343
Q344
Q345
Q346
Q371
Q372
Q375
Q376
R101
R102
R104
R105
R106
R107
R108
R110
R116
R121
R201
R202
R204
R205
R206
R207
R208
R210
R216
R221
R301
R302
R303
R304
R305
R306
R310
R313
R314
R315
R327
R335
R336
R337
R338
R339
R340
R341
R342
R343
R344
R345
R346
R353
R372
R375
R376
VR31
CN32
C204
C104 R109
Q347
R347
W1
W1