JVC NX-PB10B User manual

SERVICE MANUAL
COPYRIGHT © 2010 Victor Company of Japan, Limited No.MB730<Rev.001>
2010/10
CD PORTABLE SYSTEM
MB730<Rev.001>201010SERVICE MANUAL
NX-PB10B, NX-PB10E, NX-PB10EY
COPYRIGHT © 2010 Victor Company of Japan, Limited
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Preliminary

1-2 (No.MB730<Rev.001>)
SPECIFICATION
Design and specifications are subject to change without notice.
Amplifier section
Output Power 4 W (2 W + 2 W) at 16 Ω(10% THD)
Audio Input AUDIO IN: Stereo mini (ø3.5 mm)
250 mV/47 kΩ
Digital input USB terminal
Tuner
FM tuning range 87.50 MHz - 108.00 MHz
Disc player
Dynamic range 80 dB
Wow and flutter Immeasurable
USB
USB specification Compatible with USB 2.0 Full Speed
Compatible device Mass storage class
Compatible system FAT16, FAT32
Output power DC 5 V 500 mA
SD
Compatible device SD, SDHC
Compatible system FAT16, FAT32
iPod
Output power DC 5 V 500 mA
General
Speaker type Bass-Reflex type
Speaker unit 8 cm x 2
Speaker impedance 16 Ω
Power requirements AC 230 V / 50 Hz
Power consumption 25 W (at operation)
1.00 W or less (on standby)
Dimensions (approx.) 400 mm ×215 mm ×91 mm (W ×H ×D)
Mass (approx.) 2.3 kg

(No.MB730<Rev.001>)1-3
SECTION 1
PRECAUTION
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 0.5
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 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 exposed
metal part.
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500 10W
0.15 F AC TYPE

1-4 (No.MB730<Rev.001>)
1.5 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.
1.5.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.
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.
1.6 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.
1.7 Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for the pickup unit.
• Apply solder to the short land sections before the card wire is disconnected from the connector on the servo board. (If the card wire
is disconnected without applying solder, the pickup may be destroyed by static electricity.)
• In the assembly, be sure to remove solder from the short land sections after connecting the card wire.
1M
Conductive material
(conductive sheet) or iron palate
(caption)
Anti-static wrist strap
solder short

(No.MB730<Rev.001>)1-5
1.8 Important for laser products
1.CLASS 1 LASER PRODUCT
2.CAUTION :
(For U.S.A.) Visible and/or invisible class II laser radiation
when open. Do not stare into beam.
(Others) Visible and/or invisible class 1M laser radiation
when open. Do not view directly with optical instruments.
3.CAUTION : Visible and/or invisible laser radiation when
open and inter lock failed or defeated. Avoid direct
exposure to beam.
4.CAUTION : This laser product uses visible and/or 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 defeated. 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 here in may result in
hazardous radiation exposure.
REPRODUCTION AND POSITION OF LABELS and PRINT
!Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
WARNING LABEL and PRINT

1-6 (No.MB730<Rev.001>)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
SECTION 3
DISASSEMBLY
3.1 Main body (Used model: NX-PB10E)
3.1.1 Removing the Rear cover (See Fig.1, 2, 3)
(1) Remove the three screws A, three screws Band two
screws Cattaching the Rear cabinet. (See Fig.1)
Fig.1
(2) Disconnect the antenna wire from post pin FM1 of the Main
board. (See Fig.2)
Fig.2
(3) Disconnect the connector wire from Trans board connect-
ed to connector CN402 of the Main board. (See Fig.3)
Fig.3
3.1.2 Removing the Main board (See Fig.4)
(1) Disconnect the card wire from iPod board connected to
connector CN103 of the Main board.
(2) Disconnect the card wire from Key board connected to con-
nector CN701 of the Main board.
(3) Disconnect the connector wire from Left speaker connect-
ed to connector J2 of the Main board.
(4) Disconnect the connector wire from Right speaker con-
nected to connector J3 of the Main board.
(5) Disconnect the connector wire from Door switch board con-
nected to connector CN405 of the Main board.
(6) Disconnect the connector wires from USB board connect-
ed to connectors J13, CN603 and CN306 off the Main
board.
(7) Disconnect the card wire from USB board connected to
connector CN607 of the Main board.
(8) Disconnect the connector wire from Door motor connected
to connector CN404 of the Main board.
(9) Disconnect the connector wire from CD mechanism con-
nected to connector CN902 of the Main board.
(10) Disconnect the flexible wire from CD pickup connected to
connector CN901 of the Main board.
(11) Remove the six screws Dattaching the Main board.
Fig.4
BC CA
AABB
FM1
CN402
DD
DD D
D
CN405 J2 J3
CN306 CN902 CN103
CN404
J13 CN607
CN701CN603 CN901

(No.MB730<Rev.001>)1-7
3.1.3 Removing the Key board (See Fig.5)
(1) Remove the nine screws Eattaching the Key board.
Fig.5
3.1.4 Removing the USB board (See Fig.6)
(1) Remove the three screws Fattaching the USB board.
(2) Remove the two screws Gand one screw Hattaching the
Door switches.
Fig.6
3.1.5 Removing the iPod boar (See Fig.7)
(1) Remove the two screws Jattaching the holder.
(2) Disengage the shaft of iPod bracket from Front cabinet.
Fig.7
3.1.6 Removing the Door motor (See Fig.8)
(1) Remove the three screws Kattaching the Door motor.
Fig.8
3.1.7 Removing the CD mechanism (See Fig.9)
(1) Remove the three screws L attaching the CD mechanism.
Fig.9
3.1.8 Removing the Trans board (See Fig.10)
(1) Disconnect the power cord from connector CN1103 of the
Trans board.
(2) Disconnect the connector wires from Power transformer
connected to connector CN1101 and CN1104 of the Trans
board.
(3) Remove the three screws Mattaching the Trans board.
Fig.10
E
G
F
H
J
shaft
K
L
M
M
CN1103 CN1104 CN1101

1-8 (No.MB730<Rev.001>)
SECTION 4
ADJUSTMENT
This service manual does not describe ADJUSTMENT.
SECTION 5
TROUBLESHOOTING
This service manual does not describe TROUBLESHOOTING.

1-9 (No.MB730<Rev.001>)
<MEMO>

(No.MB730<Rev.001>)
VSE
Printed in Japan
Victor Company of Japan, Limited
Personal AV Operation 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan

SCHEMATIC DIAGRAMS
NX-PB10B, NX-PB10E,
NX-PB10EY
Contents
Block diagrams
Standard schematic diagrams
Printed circuit boards
2-1
2-2
2-10 to 12
CD PORTABLE SYSTEM
No.MB730SCH<Rev.001>
2010/12
COPYRIGHT 2010 Victor Company of Japan, Limited.
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)

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.

2-1
Block diagram
IC705 U1
LCD
KEY
REMOTE
SENSOR
IC304
IC702
MOTO
OPEN/CLOSE SW
DISC
PICKUP
IC901
SPINDLE
MOTOR M
SLED
MOTOR M
IC905
MOTOR/ACTUATOR
DRIVER
IC902
3.3V
IC404
USB
IPOD
USB+5V
IPOD+5V
IC406
IC405
VOL IC
3.3V
IC403
CD-L
CD-R
IPOD-L
IPOD-R IC401
SIGNAL SELECT SW.
VOL CONTROL
L-CH
R-CH
IC302
POWER AMP
U201
RECTIFIER
AMP
AC INPUT
TRANSFORMER
Q1101
Q1102
TRANSFORMER
RECTIFIER
CD+8V
IC412
+5V
IC413
SD
MAINPOWER
3.3V
+9V
TU-L
TU-R
TU+VCC
FM MODULE
FM ANT.
RELAY
JK402
HEADPHONE
L.SPK OUTPUT R.SPK OUTPUT
VCC
AUX-L
AUX-R
AUX IN

2-2
Q1102
R1108
Q1101
FS1102
CN1103
CN1101
CN1104
RY1101
R1104
R1102
R1101
R1103
DGND
C1110
D1107
C1112
C1113
D1105
C1108
D1109
C1111
D1108
D1106
C1109
C1102
D1102
C1104
D1104
R1105
R1106 C1115
C1101
D1101
C1103
D1103
FS1101
C1114
C1107
PT1101
L1101
CN1102
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
To Main section 3
CN402
Standard schematic diagrams
<Rectifier section>

2-3
VC25
PH-MUTE
LOV-TADA
VOL-CLK
CD_RX
CD_TX
CLOSE-DET
R725
R783
R782 GND
R739
R29
R767
R766
C708
C6
U1
GND
IO
IRQ
RDS-DAT
IIC-SCL
IIC-SDA
ST-BY
PLL_RST
IIC-SCL
IIC-SDA
EQ-SCL
EQ-SDA
CLOSE-DET
R759
R750
R763 R762
D407
D408
IC705
Q409
Q912 R484
R483
C336
D705
ZD304
R309 R308
C386 C339
C397
L304
C455
P_CON
C318
KEY1
KEY1
IR
IRQ
R302
VCC3.3V
KEY2
KEY2 LCD-DAT
LCD-DAT
LCD-WR
LCD-WR
LCD-WR
LCD-CS
LCD-CS
LCD-CS
LED+5V
VCC+12V
RX
TX
VC25
R716
R720
R722
R724
R726
R728
R771
R707
LB1641
R715
R713 R718
R761
R111
R708
R706
R709
SW901
R717
R703
Q1
TC703
R710
TC702
C702
D409
R719
R721
R723
U702
R310
C302
CN701
CN405 CN404
R764
C333
DET13
VCC3.3V
VCC3.3V
PH-DET
P-CD
MCU-MUTE
IR
LCD-DAT
TC705
C701
R705
C731
C730
C732
GND
R737
IC304
DET30
VCC+12V
LED+5V
ZD402
C530
C529
R996
R995
R769
R770
R755
R751
R117
VCC3.3V
VCC3.3V
VCC3.3V
To Front section
CN712
To Main section 3
To MOTOR
To Leaf SW section
CN704
To Main section 3
To Main section 2
To Main section 3
To Main section 3
To Main section 3
<Main section 1>

2-4
CN901
3V3SD
M33V L309
C972
C934
C970
R935
L913
Q903
SEV_3V3
C967
C911
C969
C927
C912
C928 C971
C920
C918
C914
C917
R934
C931
R936
X901
C925
C929
M33V_LDO
M33V_CKG
AUD_3V3
V18_CORE
DAC_R
AGND
DAC_L
C13
C14
R205
R206 C222 R67
C974
C977
L916
C957
C976
C975
C916
C221 R439
L505
L504
L931
L932
USB+5V
P-USB
M33V
USB-DET
M33V
R446
R423
R938
R414
R437
C408
C450
IC406
C441
C412
C442 C559
C413
R930
R931
R956
C973 C968 C965 C964 C915 C962
L506
L507 C913
L936
L934
L935
L933
L921
L922
IC902
R929
L912
L917
L906
L905
L918
L919
M33V_PAD 3V3SD
M33V
C932
SEV_3V3
AUD_3V3
3V3SD_IC
M33V_PAD
M33V_CKG
M33V_LDO
M33V
C956
C930
C496
R928
C495
C954
C959
C933
C955
IC404
C923
D406
C5
D410
CD+8V
CD_TX
CD_RX
C3
R23
MUTE1
M33V
3V3SD
CLOSE-DET
C1
IC905
CD-GND
CD+8V
L901
C944
R945
C945
R944
R927
R941
R595
R575 R574
R573 R572
C909 R933
C980
R913
R987
D903 Q901
R984
R985
R986 C979
D904
R947
D901
Q904
R966
R989
R988
Q902
R991
R990
AGND
C958
R943
R916
R917
R918
C919
SEV_3V3
3V3SD_IC USB-DET
V18_CORE M33V_PAD
P-USB
L915
C924
C922
C921
AGND
CN603
R937
R946
L902
L900
R3 R2
GND
GND
L1
C961
CN607
IC901
R912
R919
R922
R920
R911
R914
D706
R24
L8
L7
L6
L5
L4
L2
L3
C948
R925
R28
JP60
C946
C947
R942
C949
C938
CN902
To Main section 3
To USB section
CN604
To PICK UP
To Main section 1
To USB section
CN708
To CD TRAMECH
A
To This sheet
To This sheet
To This sheet
To This sheet
To This sheet
To This sheet
To This sheet
To This sheet
To This sheet
<Main section 2>

2-5
EQ-SDA
EQ-SCL
L15
L30
DAC_L
DAC_R
C160
C159
C165
R51
C166
R55
R407
R408
R409 C431 C433
C432
R410
R135
R121
C440
R215
Q202
Q201
R216
R31
R212
R485 Q404
Q408
R459
C563
C113
C116
R458
L108 R120 ES113
C120
C101
R115 L112
R742 L116
L115
R103
C103
TU+3.3V
+8V
C168
CE203
CE204
CN306
C20
C403
C524
C511
C411
C525
C526
R201
C534
C540
R454
C10
C11
R18
R17
C533
R82
CN312
C527
C505
C422
C125
DET13
I0
DET30
RX
TX
C115
R103
C104
R105
X101
C105
CE201
BC206
R104
IC101
C119
R125
C202
R124
FB300
H0-L
R113
FB402
C452
C436
C448
R4
C437
C446
C434
R1
C451
IC401
C435 C404
R512
C429
AGND
R209
C407
R517
C453
C430
R208
BC201
R202
U201
C201
R213
ZD201
R101
C103 R110
C107
C105
C104
C108 C106
R109
C102
C101
R102
C109
IC704
C167
C460
R482
C158 EC7 CFC11
C142
C150
C153
C162
C161
C170
C515
C426
R425
C456 C541
C463
R9
C469
R136
C169
R132
C163 C140
R26
C410
C148
U11
R12
R27
C154
R37
R36
TC8
EC8 FC6
C152
TC6
R144
R141
R107
C171 C173 C174
R119 R145
C172
R469
R443
CN103
R420
C723 C414
R452
C510
R191
C538
R438
R518
C9
R15
R83 Q6
R19
Q5 C176
R225 R33
IC302
C535
C521
C143
D405
D402
C89
IC412
C978 L402
C963
D413
IC405
C416 C458
R428
R435
R434
R429
C461
C445 R472
D401
D905
IC413
C459
R413
C1105
CN402
VCC1
R426
C421
C420
C402
J2
J3
R21
C177
R7 R14
C7 C8
R424
L401
D412
C419
C12
R451 R189
D403
R204
IN4148
D404
R442
R519
C522
C2
Q405
C405 Q406
+8V
CD+8V
P-CD
ST-BY
VCC+12V
CD-MUTE
R192
C542
R453 R174
MCU-MUTE
H0-L
H0-R
USB+5V
VCC+12V
VCC3.3V
P_CN
R10
R147
TC5
C151
R11 C141
C155
R151
C156
C157
R104
C427
R422
C509
R13
C523
C528
R427
R421
C514
VOL-CLK
LOV-TADA
IC403
C518
C516
ZD502
R239
R210
R133
C470
R131
USB+5V
TU-R
+8V
TU-L
H0-R
H0-L
IPOD-L
IPOD-R
C175
C147
R20
C149
BC2
EC22
C19
C204 R214
C203
R203
C428
FB401
FB300
R116
R406
R405
C468
C438
C467
R401
C401
C443
C439
BC207
BC204
R207
CE202
BC202
FB202
FB300
FB201
R211 FB204
TU-R
TU-L
IPOD-R
IPOD-L
PH-MUTE
TU+3.3V
H0-R
+8V
PH-DET
RDS-DAT
ANT-FM
PLL_RST
IIC-SDA
IIC-SCL
To Main section 1
To USB section
CN305
To USB section
CN305
To Main section 1
To Main section 1
To Main section 1
To Main section 1
To Main section 2
To This sheet
To This sheet
To Main section 1
To This sheet
To Rectifier section
CN1102
To iPod section
CN201
To Main section 1
To This sheet
To This sheet
To This sheet
To This sheet
To This sheet
To This sheet
To This sheet
To This sheet
To This sheet
<Main section 3>

2-6
KEY1
SW702
R732 R755 R761 R756 R733 R753
KEY2
KEY1
IR
IRQ
VCC3.3V
VCC3.3V
KEY2
LCD-DAT
LCD-WR
LCD-CS
LED+5V
LED+5V
R752
C737
R713
LED702
R757
C742
Q702
C748
R716
R715
SW708
SW711
SW709
SW712
C710
C709
R735
R777
R738
R714
LCD-CS
LCD-RW
LCD-DAT
VCC3.3V
IRQ
X701
C726
C706
C705
SW705
SW706
SW704
C724
SW701
C725
C718
C746
R701
VCC3.3V
IR
C717
SW710
C716
C707
CN712
SW703
Q704
R758
R789
R754 R763 R765 R770 R762
LCD701
IC701 R741
C703
C704
SM338A
REM701
C747 R734
LED701
To Main section 1
CN706
<Front section>

2-7
C605 C602 C603
JK602
CN708
D603
D604
C604
L609
D601
D602
JK601
C601
R505 R506
L503
C504
C536
R504
R503 L502
L501
C554
C556
CE608
CE609
CN305
C606
CN604
JK302
L302
L303
C607
JK301
L301
L601
L602
ES602 ES601
To Main section 3
CN312
CN306
To Main section 2
CN603
To Main section 2
CN607
<USB section>

2-8
L99
L97
L96
CN201
R350
R356
R352
R349
R347
R353
D38
R355
R344
R348
R346
R345
Q53
Q54
D201
Q52
JK201
To Main section 3
CN103
<iPod section>