1-1
NX-HD10
SERVICE MANUAL
COMPACT COMPONENT HDD SYSTEM
No.21155
Sep. 2002
COPYRIGHT
2002 VICTOR COMPANY OF JAPAN, LTD.
NX-HD10
NX-HD10
Area Suffix
J ------------------------- U.S.A.
Safety precautions
Preventing static electricity
Important for laser products
Importance administering
point on the safety
Disassembly method
Contents
Adjustment method
Flow of functional operation
until TOC read (CD)
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
1-2
1-3
1-4
1-5
1-6
1-20
1-21
1-22
1-22
1-23~45
SP-NXHD10
CA-NXHD10
SP-NXHD10
STANDBY/ON
DISP/CHARA
CANCEL
SET
ENTER
RM-SNXHD10J REMOTE CONTROL
REPEAT
ALBUM
ALBUM
SEARCH
MODE
TONE
CONTROL
ALBUM
LIBRARY
SELECT
FM / PLAY
MODE
TITLE
/EDIT
DIMMER
CONTRAST
VOLUME
AHB PRO
AAC
SOUND
10
0
+10
1-MARK
2-ABC
3-DEF
4-GHI
5-JKL
6-MNO
7-PQRS
8-TUV
9-WXYZ
HDD
CD
TUNER
/LINE
REC START
A.P.off
CLOCK
/TIMER
SLEEP
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NX-HD10
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 manufacturer`s 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 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 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 re-assembling.
5. Leakage currnet check (Electrical shock hazard testing)
After re-assembling 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
10W resistor paralleled by a 0.15 F AC-type capacitor
between an 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 meausre 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. 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.
Good earth ground
Place this
probe on
each exposed
metal part.
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500
10W
0.15 F AC TYPE
!
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.
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.
(This regulation does not correspond to J and C version.)
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NX-HD10
Preventing static electricity
1.Grounding to prevent damage by 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.
2.About the earth processing for the destruction prevention 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.
2-1 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.
2-2 Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
3. Handling the optical pickup
1. 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.)
2. 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.
4.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. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it
Attention when traverse unit is decomposed
1.Solder is put up before the card wire is removed from connector on
the CD substrate as shown in Figure.
(When the wire is removed without putting up solder, the CD pick-up
assembly might destroy.)
2.Please remove solder after connecting the card wire with
when you install picking up in the substrate.
*Please refer to "Disassembly method" in the text for pick-up and how to
detach the substrate.
(caption)
Anti-static wrist strap
Conductive material
(conductive sheet) or iron plate
CN601 on
mechanism
board
Shorting round
Shorting round
Flexible wire
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NX-HD10
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
laserradiation and is equipped with safety switches
whichprevent 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.
VARNING : Osynlig laserstrålning är denna del är öppnad
och spårren är urkopplad. Betrakta ej strålen.
VARO
: Avattaessa ja suojalukitus ohitettaessa olet
alttiina näkymättömälle lasersäteilylle.Älä katso
säteeseen.
ADVARSEL : Usynlig laserstråling ved åbning , når
sikkerhedsafbrydere er ude af funktion. Undgå
udsættelse for stråling.
ADVARSEL : Usynlig laserstråling ved åpning,når
sikkerhetsbryteren er avslott. unngå utsettelse
for stråling.
REPRODUCTION AND POSITION OF LABELS
WARNING LABEL
! CAUTION Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
CLASS 1
LASER PRODUCT
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NX-HD10
Importance administering point on the safety
Caution: For continued protection against risk of
fire, replace only with same type 2.5A/125V for
F9002, 8A/125V for F9001 and 1.6A/125V for F9009.
This symbolspecifies type of fast operating fuse.
Precaution: Pour evitisques de fer reux, remplacez
le fusible de surete de F9002 comme le meme type
que 2.5A/125V, et 8A/125V pour F9001 et 1.6A/125V
pour F9009.
Ce sont des fusibles suretes qui functionnes rapide.
^
4
3
B2511
B2045
B2044
B2043
CN921
FT909
FT910
J9001
LF901
R9009
B2046
LVA10304-A3
F9009
LIVE
NEUTRAL
1.6A/125V
D
F
E
C9201
C9202
C9203
C9204
C9205
C9206
C9207
C9208
C9209
C9301
C9302
C9303
C9304
C9305
C9306
C9307
C9308
C9309
C9310
D9601
C9605
C9603
C9701
C9702
C9703
C9801
CN903
CP961
D9201
D9202
D9301
D9302
D9303
D9304
D9305
D9306
D9307
D9308
D9309
D9310
D9401
D9402
IC961
D9701
EP901
FT901
FT902
FT903
FT904
Q9201
Q9202
Q9203
C9601
C9602
CN994
B2510
Q9701
Q9702
Q9703
Q9801
Q9802
R9201
R9202
R9203
R9204
R9205
R9206
R9207
R9301
R9401
R9402
R9601
R9602
B2814
B2508
B2225
R9607
R9608
R9701
R9702
R9703
R9704
R9705
R9706
R9801
D9602
B2315
B2503
B2317
B2216
B2603
B2060
B2958
B2959
B2815
B2605
B2602
B2905
B2960
B2961
C9210
B2320
B2058
B2411
B2607
B2604
C9604
C9704
CN693
B2322
CN995
WC901
1
E
B
E
B
SW+8V
INH
TRSW
DGND
D+5.6V
AMP+B
FAN
F9002
B
E
10
POWER
SW+8V
DGND
HDDGND
D5.6V
AMPG
1
1
MI+5.6V
13
6
3
LVA10304-A5
E
B
B
E
1
E
B
2.5A/125V
8A/125V
F9001