JVC HX-Z10 Service Manual
22015200304
HX-Z10
SERVICE MANUAL
COMPACT COMPONENT SYSTEM
HX-Z10
SP-HXZ10 SP-HXZ10CA-HXZ10
Area Suffix
J ---------------------- U.S.A.
C ------------------- Canada
TABLE OF CONTENTS
1 Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3 Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
4 Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
No.22015
2003/04
HX-Z10
Important Safety Precautions
1.1 Safety Precautions
(1) This design of this product contains special hardware and
many circuits and components specially for safety purposes.
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 performed 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 characteristics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety
characteristics are identified in the Parts List of Service Manual. Electrical components having such features ar e i dentified 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 characteristics 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 reassembling.
(5) Leakage shock hazard testing)
After reassembling the product, always perform an isolation
check on the exposed metal parts of the product (antenna
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, particularly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage current 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, 1,000 ohms per volt or more sensitivity in
the following manner. Connect a 1,500 ohm 10W resistor
paralleled by a 0.15 µF AC-type capacitor between an
SECTION 1
exposed 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 0.5 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 preforming 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. (Except the JC version)
1-2 (No.22015)
1.5 Importance administering point on the safety
HX-Z10
B2005
CN212
CN213
C258
B2104
CN233
CN231
CN232
B2204
R1002
D236
FT532
FT531
B2004
B2602
C259
C256
B2401
D235
D233
B2203
CN214
FT511
FT512
B2700
D234
D253
R250
Q250
C253
C255
FT521
FT522
T001
B2101
Q251
Q252
R253
T002
R1001
C250
R252
C251
D256
B2003
B2001
R254
B2202
R251
B2006
C257
C254
D252
D250
B2002
D254
B2601
B2103
B2201
RY3
B2501
FT132
B2801
B2802
B2502
FT131
FT111
C252
B2102
FT112
CN250
B2951
S500
B2400
B2952
Caution: For continued protection against risk of
fire, replace only with same type 6A/125V for F001,
3.15A/125V for F103, 8A/125V for F101 and F102.
This symbol specifies type of fast operating fuse.
Precaution: Pour eviter risques de feux, remplacez
le fusible de surete de F001 comme le meme type
que 6A/125V, de F103 que 3.15A/125V, et 8A/250V
pour F101 et F102.
Ce sont des fusibles suretes qui functionnes rapide.
^
(No.22015)1-3
HX-Z10
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 replace-
ment 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.
Front panel assembly
Band
1-4 (No.22015)
Primary board
CN231
a
SECTION 2
AA
Disassembly method
2.1 Main body
2.1.1 Removing the metal cover
(See Fig.1~3)
(1) Remove the six screws A on the back of the body.
(2) Remove the screw B on each side of the body.
(3) Remove the metal cover from the body by lifting the rear
part of the cover.
CAUTION:
Do not break the front panel tab fitted to the metal cover.
HX-Z10
Metal cover
Metal cover
A
B
Fig.2
Metal cover
Fig.1
B
Fig.3
(No.22015)1-5
HX-Z10
2.1.2 Removing the CD changer mechanism assembly
(See Fig.4, 5)
• Prior to performing the following procedure, remove the metal
cover.
(1) Disconnect the card wire from connector CN651 on the CD
servo control board on the right bottom of the CD changer
mechanism assembly.
(2) Remove the four screws C attaching the CD changer
mechanism assembly on top of the body.
(3) Remove the CD changer mechanism assembly while lifting
the rear part.
CAUTION:
Do not damage the CD fitting when removing the CD changer
mechanism assembly.
CD changer mechanism assembly
Front panel assemby
CD servo control board
CN651
Fig.4
C
C
CD changer
mechanism assembly
Fig.5
1-6 (No.22015)
HX-Z10
2.1.3 Removing the front panel assembly
(See Fig.6~9)
• Prior to performing the following procedure, remove the metal
cover and the CD changer mechanism assembly.
(1) Disconnect the card wires from connector CN44 and
CN870 on the main board on the right side of the body.
(2) Disconnect the wire from connector CN701 on the bridge
board.
(3) Cut the band.
(4) Disconnect the wire from connector CN231 on the primary
board on the left side of the body and remove the band fix-
ing the wire.
(5) Disconnect the ground wire extending from phones board
from bottom chassis.
(6) Remove the three screws D attaching the front panel as-
sembly at the bottom of the body.
(7) Release the two joints a on the lower left and right sides of
the front panel assembly using a screwdriver, and remove
the front panel assembly toward the front.
REFERENCE:
Front panel need to be tilt a little bit as release from bottom
chassis.
Front panel assembly
Band
Primary board
CN231
Fig.7
Band
Front panel assembly
a
Bridge board
CN701
Primary board
CN231
a
Fig.6
CN44
Main board
CN870
Ground wire
Fig.8
Front panel assembly
Front panel aeembly
D
Fig.9
(No.22015)1-7
HX-Z10
2.1.4 Removing the tuner pack assembly
(See Fig.10, 11)
• Prior to performing the following procedure, remove the metal
cover and the CD changer mechanism assembly.
(1) Disconnect the card wire from connector CN1 on the tuner
pack assembly on the right side of the body.
(2) Remove the two screws E on the rear panel on the back of
the body.
Tuner pack assembly
CN1
Fig.10
E
Rear panel
1-8 (No.22015)
Fig.11
HX-Z10
2.1.5 Removing the rear panel
(See Fig.10, 12~16)
• Prior to performing the following procedure, remove the metal
cover and the CD changer mechanism assembly.
(1) Remove holding board by remove a plastic rivet and then
slide out the holding board as shown in fig. 12.
(2) Disconnect the fan wire extending from the fan assembly
from connector CN206 on the bridge board.
(3) Disconnect the card wire from connector CN1 on the tuner
pack.
(4) Remove four screws F from rear panel.
(5) Release joints b which on right bottom and left bottom of
rear panel. The joint can be release by pull outward the
side of rear panel.
REFERENCE:
Fan assembly and tuner pack will come off with rear panel.
Rear panel
Plastic rivet
Rear panel
FF
Fan assembly
Fig.12
Fig.13
Holding board
Bridge board
CN206
F
Fig.14
Rear panel
b
Fig.15
Rear panel
b
Fig.16
(No.22015)1-9
HX-Z10
2.1.6 Rmoving the fan assembly
(See Fig.17, 18)
• Prior to performing the following procedure, remove the metal
cover, the CD changer mechanism assembly and the rear panel.
(1) Remove two screws G on the rear panel.
(2) Rotate fan assembly in clockwise direction to release fan
assembly from rear panel (joints c).
G
Rear panel
Fig.17
2.1.7 Removing the main board
(See Fig.19)
• Prior to performing the following procedure, remove the metal
cover, the CD changer mechanism assembly and the rear panel.
(1) Cut off the band.
(2) Disconnect the card wires from connector CN44 and
CN870 on the main board.
(3) Remove the screw H attaching the main board.
(4) Disconnect connector CN217 and CN311 on the main
board outward and release from the base chassis (joint d)
upward.
c
Fan assembly
c
Fig.18
Band
Main board
CN217
1-10 (No.22015)
CN870
CN44
H
Fig.19
CN311
d
2.1.8 Removing the bridge board / regulator board / heat sink
(See Fig.20~23)
• Prior to performing the following procedure, remove the metal
cover, the CD changer mechanism assembly, the rear panel
and main board.
(1) Disconnect the wire from connector CN212, CN213 and
CN214 on the primary board respectively and remove the
band attaching the wires.
(2) Disconnect the wire from connector CN701 on the bridge
board.
(3) Disconnect the ground wire extending from the bridge
board from bottom chassis.
(4) Remove the two screws I attaching the heat sink bracket
and move the heat sink in the direction of the arrow to release from the base chassis. The bridge board and the reg-
ulator board come off with the heat sink.
(5) Remove the two screws J attaching the heat sink bracket.
(6) Remove the two screws M, detach bridge board from reg-
ulator board by disconnect connector CN205.
(7) Remove the two screws K and two screws L to detach
regulator board from heat sink.
CAUTION:
As assembly back the regulator board and bridge board to
heat sink.
Regulator board must be assembly to heat sink first and
screws K and L must be screwed before bridge board attach
to regulator board.
Band
Bridge board
Ground wire
Regulator board
Bridge board
I
Fig.21
HX-Z10
Heat sink
I
Heat sink bracket
Heat sink
CN701
Bridge board
Fig.20
Primary board
CN213
CN212
CN214
Regulator board
L
K
Heat sink bracket
Fig.22
Heat sink bracketHeat sink
ML
Fig.23
J
Regulator board
CN215
CN205
Bridge board
(No.22015)1-11
HX-Z10
2.1.9 Removing the power transformer assembly
(See Fig 24, 25)
• Prior to performing the following procedure, remove the metal
cover, the CD changer mechanism assembly, the rear panel,
the main board and the bridge board / regulator board.
(1) Remove the screw N attaching the primary board.
(2) Disconnect the wire from connector CN231 on the primary
board.
(3) Remove the four screws O attaching the power transform-
er assembly.
(4) Detach the cord stopper from the base chassis upward.
REFERENCE:
When disconnecting the power cord from connector CN250 on
the primary board, remove the fixing band.
Power transformer
assembly
Power transformer
assembly
Primary board
N
Fig.24
Primary board
CN231
CN250
FIxing band
Fig.25
Cord stopper
O O
1-12 (No.22015)
HX-Z10
2.2 Front panel assembly
• Prior to performing the following procedure, remove the metal
cover, the CD changer mechanism assembly and the front
panel assembly.
2.2.1 Removing the cassette mechanism assembly
(See Fig.26)
(1) Disconnect the card wire from connector CN33 on the head
amplifier & mechanism control board.
(2) Remove the two screws P, and the two screws Q attach-
ing the cassette mechanism assembly.
2.2.2 Removing the headphone board
(See Fig.26)
(1) Remove the screw R and pull out the headphone board
backward.
(2) Cut off the band.
2.2.3 Rmoving the switch / micon board
(See Fig.27~29)
• Prior to performing the following procedure, disconnect the
card wire from CN43 on the micon board.
(1) Disconnect the card wire from connector CN840 on the mi-
con board.
(2) Remove the fifteen screws S attaching the switch / micon
board.
(3) Remove the spacer fixing the wire.
(4) Move the switch /micon board in the direction of the arrow
to disconnect the wire from connector CN880 and CN900
on the micon board.
S
Switch board
Head amplifier &
mechanism control board
CN33
P
QR
Fig.26
Switch board
Fig.28
Band
Q
Headphone board
Spacer
Switch board
S
CN43
Fig.27
S
Spacer
S
Micon board
CN840
CN880
Fig.29
CN43
CN840
CN900
Micon board
(No.22015)1-13
HX-Z10
2.2.4 Removing the FL board assembly
(See Fig.30, 31)
• Prior to performing the following procedure, remove the switch
/ micon board.
(1) Remove the five screws T attaching the stay bracket (1).
(2) Remove the three screws U attaching the FL board as-
sembly.
T
Stay bracket (1)
Fig.30
U
UU
FL board assembly
Fig.31
1-14 (No.22015)
2.2.5 Removing the button board
(See Fig.32~35)
• Prior to performing the following procedure, remove the switch
/micon board.
(1) Pull out the preset knob, the volume knob and the sound
mode knob.
(2) Remove the two screws V attaching the knob holder. Re-
move the nut from the front panel.
(3) Remove the eleven screws W attaching the button board.
Sound mode knob
HX-Z10
Nut
Fig.34
Volume baord
V
Volume knob
Fig.32
Knob holder
Fig.33
Preset knob
W
W
W
Fig.35
(No.22015)1-15
HX-Z10
r
2.3 CD changer mechanism
2.3.1 Removing the tray assembly
(See Fig.1 ~ 5)
(1) Remove the two screws A from the top cover and release
the two joints a on both sides of the body.
(2) Remove the top cover with the two rods attached to the top
cover and lifter assembly respectively.
(3) Remove the open det lever on the left side of the body.
(4) Push part b of the slide (R) assembly on the right side of
the body to unlock the tray assembly. Draw out the trays to-
ward the front.
Attention:
The tray can be locked if all tray assemblies are attached.
(5) From top of the body, move the stopper tab c in the direc-
tion of the arrow and release. Pull out the tray assemblies
from the body.
Caution:
Remove the tray assembly from top tray 5 in order.
Attention:
When reattaching the sub tray of the tray assembly, or when
removing the CD remaining inside, refer to another section.
Top cover
Open det leve
Fig.3
c
A
a
Lifter assembly
a
Rod
Fig.1
Top cover
A
Tray assembly
a
(Tray 5)
b
Fig.4
Rod
1-16 (No.22015)
Lifter assembly
Fig.2
a
Fig.5
HX-Z10
2.3.2 Removing the servo control board
(See Fig.6 ~ 9)
Caution:
Solder the short-circuit point on the pickup before disconnecting the card wire extending from the pickup. If you do not follow
this instruction, the pickup may be damaged.
(1) Disconnect the card wire from connector CN251 and each
wire from connector CN252, CN253 and CN602 on the servo control board on the bottom of the body. Disconnect the
wire from joint d.
(2) Solder the short round point on the flexible board of the pick
up.
(3) Remove the four screws B and turn the servo control board
as shown in the figure.
(4) Disconnect the card wire from connector CN601 on the
servo control board.
Caution: Unsolder the short-circuit point after reassembling.
Caution:
When reassembling, twist the wires to be connected to connector CN252 and CN253 twice.
2.3.3 Removing the switch board (See Fig.9)
(1) Disconnect the wires from connector CN252 and CN253
on the servo control board.
(2) Remove the screw C attaching the switch board.
(3) Release the wires from the slot e of the switch board.
Caution:
When reassembling, let the wires through the slot e of the
switch board and twist them twice.
Servo control board
B
Card wire
Short round
Flexible board
Pickup
Fig.7
Card wire
CN601
CN602
d
B
Fig.6
CN253
CN252
B
CN251
Switch board
Servo control board
Fig.8
Servo control board
CN253
e
CN252
Switch board
C
Fig.9
(No.22015)1-17
HX-Z10
2.3.4 Removing the motor board
(See Fig.10 , 11)
• Prior to performing the following procedure, remove the servo
control board.
(1) Turn over the body and remove the two screws D. Move
the CD module bkt. in the direction of the arrow to release
two joints f.
(2) Unsolder the four soldered parts on the motor of the motor
board.
Caution:
If removing the motor board with the motor, you should
remove the screws attaching the motor from top of the
body(Refer to another section).
(3) Remove the two screws E attaching the motor board.
(4) Remove the spacer fixing the motor board and tray switch
board, and disconnect connector CN2 on the motor board.
(5) Disconnect the card wire from connector CN1 on the motor
board.
Caution:
When reconnecting the card wire, let the card wire through the
slot g of the motor board and attach it to the bottom of the body
using a double tape.
f
f
CD Module
braket
DD
CN2
CN1
g
Spacer
Soldering point
E
Fig.10
E
Motor
Double
face tape
Card wire
Fig.11
1-18 (No.22015)
2.3.5 Removing the CD tramecha assembly
(See Fig.12)
• Prior to performing the following procedure, remove the servo
control board.
(1) Turn over the body and remove the three screws F attach-
ing the tramecha.
HX-Z10
F
F
F
CD Tramecha assembly
Fig.12
(No.22015)1-19
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