JVC NX-PN7J User manual

SERVICE MANUAL
COPYRIGHT © 2008 Victor Company of Japan, Limited No.MB675<Rev.002>
2008/9
COMPACT COMPONENT SYSTEM
MB675<Rev.002>20089SERVICE MANUAL
NX-PN7J,NX-PN7C,NX-PN7B,NX-PN7E,
NX-PN7EN,NX-PN7EV,NX-PN7A,
NX-PN7US,NX-PN7UW,NX-PN7UJ
COPYRIGHT © 2008 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
NX-PN7B, NX-PN7E
NX-PN7EN, NX-PN7EV

REVISION INFORMATION
COMPACT COMPONENT SYSTEM
COPYRIGHT © 2008 Victor Company of Japan, Limited MB675-R002
2008/09
NX-PN7J, NX-PN7C, NX-PN7B, NX-PN7E,
NX-PN7EN, NX-PN7EV, NX-PN7A, NX-PN7US,
NX-PN7UW, NX-PN7UJ
■OVERVIEW
Add NX-PN7B, NX-PN7E, NX-PN7EN, NX-PN7EV, NX-PN7A, NX-PN7US, NX-PN7UW and
NX-PN7UJ
■DETAILS
COVER SECTION
Title Line No.MB675<Rev.001> No.MB675<Rev.002> Description
Revision Rev.001 Rev.002
Issue Date 2008/07 2008/09
Model No. NX-PN7C,
NX-PN7J NX-PN7A, NX-PN7B,
NX-PN7C,
NX-PN7E,
NX-PN7EN,
NX-PN7EV,
NX-PN7J,
NX-PN7UJ,
NX-PN7US,
NX-PN7UW
Cover Illustration ILLUSTRATION(mb675_0001.png) ILLUSTRATION(mb675_0001.png)
Category Audio/Video Systems category Audio/Video Systems Division
SPECIFICATION 1 NX-PN7J,C
10
Dock A and B for iPod
* Only for still picture.
Compatible iPod types
iPod nano 1GB/2GB/4GB
yes
no
Dock A and B for iPod
* Only for still picture.
Compatible iPod types
iPod nano 1GB/2GB/4GB
Audio
yes

2 (MB675-R002)
Title Line No.MB675<Rev.001> No.MB675<Rev.002> Description
11
iPod nano (2nd Generation)
2GB/4GB/8GB
yes
no
Video
no
12
iPod nano (3rd Generation) 4GB/8GB
yes
yes
iPod nano (2nd Generation)
2GB/4GB/8GB
Audio
yes
13
iPod mini 4GB
yes
no
Video
no
14
iPod mini (2nd Generation) 4GB/ 6GB
yes
no
iPod nano (3rd Generation) 4GB/8GB
Audio
yes
15
iPod (4th Generation) 20GB/40GB
yes
no
Video
yes
16
iPod photo (4th Generation)
20GB/30GB/40GB/60GB
yes
yes*
iPod mini 4GB
Audio
yes
17
iPod video (5th Generation)
30GB/60GB/80GB
yes
yes
Video
no
18
iPod classic 80GB/160GB
yes
yes
iPod mini (2nd Generation) 4GB/ 6GB
Audio
yes
19
iPod touch 8GB/16GB/32GB
yes
yes
Video
no
20
iPhone 4GB/8GB/16GB
yes
yes
iPod (4th Generation) 20GB/40GB
Audio
yes
21 - Video
no
22 - iPod photo (4th Generation)
20GB/30GB/40GB/60GB
Audio
yes
23 - Video
yes*
24 - iPod video (5th Generation)
30GB/60GB/80GB
Audio
yes
25 - Video
yes
26 - iPod classic 80GB/160GB
Audio
yes

(MB675-R002) 3
Title Line No.MB675<Rev.001> No.MB675<Rev.002> Description
27 - Video
yes
28 - iPod touch 8GB/16GB/32GB
Audio
yes
29 - Video
yes
30 - iPhone 4GB/8GB/16GB
Audio
yes
31 - Video
yes
54 - NX-PN7BEENEV
55 - Amplifier
56 - Output Power
10 W (5 W + 5 W) at 8 Ω(10% THD)
(IEC268-3)
57 - Terminals
58 - AUDIO IN
Input Sensitivity/
Impedance (1 kHz)
LEVEL 1: 500 mV/47 kΩ
59 - LEVEL 2: 250 mV/47 kΩ
60 - LEVEL 3: 125 mV/47 kΩ
61 - Dock A and B for iPod
* Only for still picture.
Compatible iPod types
iPod nano 1GB/2GB/4GB
Audio
yes
62 - Video
no
63 - iPod nano (2nd Generation)
2GB/4GB/8GB
Audio
yes
64 - Video
no
65 - iPod nano (3rd Generation) 4GB/8GB
Audio
yes
66 - Video
yes
67 - iPod mini 4GB
Audio
yes
68 - Video
no
69 - iPod mini (2nd Generation) 4GB/ 6GB
Audio
yes

4 (MB675-R002)
Title Line No.MB675<Rev.001> No.MB675<Rev.002> Description
70 - Video
no
71 - iPod (4th Generation) 20GB/40GB
Audio
yes
72 - Video
no
73 - iPod photo (4th Generation)
20GB/30GB/40GB/60GB
Audio
yes
74 - Video
yes*
75 - iPod video (5th Generation)
30GB/60GB/80GB
Audio
yes
76 - Video
yes
77 - iPod classic 80GB/160GB
Audio
yes
78 - Video
yes
79 - iPod touch 8GB/16GB/32GB
Audio
yes
80 - Video
yes
81 - iPhone 4GB/8GB/16GB
Audio
yes
82 - Video
yes
83 - Output power (each iPod)
DC 5 V 500 mA
84 - VIDEO OUT (For iPod)
Composite
85 - PHONES
32Ω1 kΩ
86 - 15 mW/ch output into 32 Ω
87 - Tuner
88 - FM tuning range
87.50 MHz - 108.00 MHz
89 - Unit
90 - Dimensions (W/H/D)
318 mm × 148 mm × 154 mm
91 - Mass
Approx. 1.6 kg
92 - Speaker Specifications

(MB675-R002) 5
Title Line No.MB675<Rev.001> No.MB675<Rev.002> Description
93 - Type
Full range bass-reflex type
94 - Speakers
7 cm cone × 2
95 - Impedance
8 Ω
96 - Power Specifications
97 - Power Source
DC 10.7 V 3 A (EXTERNAL DC IN)
98 - AC Adaptor (AA-R1001)
INPUT
AC 110 - 240 V 50 Hz/60 Hz 1 A
99 - OUTPUT
DC 10.7 V 3 A 32.1 VA
100 - Power Consumption
35 W (power on mode)
101 - 4 W or less (in Standby mode)
102 - 1 W or less (in ECO mode)
103 - 19 W (in Standby mode with two iPod
devices connected.)
105 - Design and specifications are subject to
change without notice.
106 - NX-PN7AUSUJUW
107 - Amplifier
108 - Output Power
10 W (5 W + 5 W) at 8Ω(10% THD)
(IEC268-3)
109 - Terminals
110 - AUDIO IN
Input Sensitivity/
Impedance (1 kHz)
LEVEL 1: 500 mV/47 kΩ
111 - LEVEL 2: 250 mV/47 kΩ
112 - LEVEL 3: 125 mV/47 kΩ
113 - Dock A and B for iPod
* Only for still picture.
Compatible iPod types
iPod nano 1GB/2GB/4GB
Audio
yes
114 - Video
no
115 - iPod nano (2nd Generation)
2GB/4GB/8GB
Audio
yes
116 - Video
no

6 (MB675-R002)
Title Line No.MB675<Rev.001> No.MB675<Rev.002> Description
117 - iPod nano (3rd Generation) 4GB/8GB
Audio
yes
118 - Video
yes
119 - iPod mini 4GB
Audio
yes
120 - Video
no
121 - iPod mini (2nd Generation) 4GB/ 6GB
Audio
yes
122 - Video
no
123 - iPod (4th Generation) 20GB/40GB
Audio
yes
124 - Video
no
125 - iPod photo (4th Generation)
20GB/30GB/40GB/60GB
Audio
yes
126 - Video
yes*
127 - iPod video (5th Generation)
30GB/60GB/80GB
Audio
yes
128 - Video
yes
129 - iPod classic 80GB/160GB
Audio
yes
130 - Video
yes
131 - iPod touch 8GB/16GB/32GB
Audio
yes
132 - Video
yes
133 - iPhone 4GB/8GB/16GB
Audio
yes
134 - Video
yes
135 - Output power (each iPod)
DC 5 V 500 mA
136 - VIDEO OUT (For iPod)
Composite

(MB675-R002) 7
Title Line No.MB675<Rev.001> No.MB675<Rev.002> Description
137 - PHONES
32Ω1 kΩ
138 - 15 mW/ch output into 32 Ω
139 - Tuner
140 - FM tuning range
87.50 MHz-108.00 MHz
141 - Unit
142 - Dimensions (W/H/D)
318 mm × 148 mm × 154 mm
143 - Mass
Approx. 1.6 kg
144 - Speaker Specifications
145 - Type
Full range bass-reflex type
146 - Speakers
7 cm cone × 2
147 - Impedance
8 Ω
148 - Power Specifications
149 - Power Source
DC 10.7 V 3 A (EXTERNAL DC IN)
150 - AC Adaptor (AA-R1001)
INPUT
AC 110 - 240 V , 50 Hz/60 Hz 1 A
151 - OUTPUT
DC 10.7 V 3 A
152 - Power Consumption:
35 W (power on mode)
153 - 4 W or less (in Standby mode)
154 - 1 W or less (in ECO mode)
155 - 19 W (in Standby mode with two iPod
devices connected.)
157 - Design and specifications are subject to
change without notice.
SECTION 1 PRECAUTION
Title Line No.MB675<Rev.001> No.MB675<Rev.002> Description
1.1 Safety
Precautions 8 ILLUSTRATION(LXM-SA007- 001_01.png) ILLUSTRATION(LXM-SA009- 001_01.png)
1.5 Safety
Precautions (U.K
only)
T - 1.5 Safety Precautions (U.K only)
1 - 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.

8 (MB675-R002)
Title Line No.MB675<Rev.001> No.MB675<Rev.002> Description
2 - 2. Any unauthorised design alterations or
additions will void the manufacturer's
guarantee; furthermore the manufacturer
cannot accept responsibility for personal
injury or property damage resulting
therefrom.
3 - 3. Essential safety critical components
are identified by
( ILLUSTRATION(kigo001.png) ) on the
Parts List and by shading on the
schematics, and must never be replaced
by parts other than those listed in the
manual. Please note however that many
electrical and mechanical parts in the
product have special safety related
characteristics. These characteristics are
often not evident from visual inspection.
Parts other than specified by the
manufacturer may not have the same
safety characteristics as the
recommended replacement parts shown
in the Parts List of the Service Manual
and may create shock, fire, or other
hazards.
4 - 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.
1.5.1 Warning T - 1.5.1 Warning
1 - 1. Service should be performed by
qualified personnel only.
2 - 2. This equipment has been designed
and manufactured to meet international
safety standards.
3 - 3. It is the legal responsibility of the
repairer to ensure that these safety
standards are maintained.
4 - 4. Repairs must be made in accordance
with the relevant safety standards.
5 - 5. It is essential that safety critical
components are replaced by approved
parts.
6 - 6. If mains voltage selector is provided,
check setting for local voltage.
7 - ILLUSTRATION(LXM-SA009-
001_02.png)
STANDARD SCHEMATIC DIAGRAMS
Description of Major ICs
Diagram Name No.MB675<Rev.001> No.MB675<Rev.002> Description
Menu -U302: BI102024X
BI102024X.xml
Menu -U702: BI103952X
BI103952X.xml
Menu -U310: BI113231X
BI113231X.xml

(MB675-R002) 9
Diagram Name No.MB675<Rev.001> No.MB675<Rev.002> Description
Menu -U705: BI119711X
BI119711X.xml
Menu -U703: BI117371X
NJM2233BM.xml
Menu -U303: BI126541V
TDA7266SA.xml

10 (MB675-R002)
PARTS LIST
MODEL No. LIST
Model No. No.MB675<Rev.002>
NX-PN7A 07
NX-PN7B 03
NX-PN7C 02
NX-PN7E 04
NX-PN7EN 05
NX-PN7EV 06
NX-PN7J 01
NX-PN7UJ 0A
NX-PN7US 08
NX-PN7UW 09
General assembly [M1]
Part No.
!Symbol or <Rev.001> <Rev.002> Part Name Description Qty Models
M1 6 ------------ BI1005469102X1 FRONT CABINET (Addition) 1 07,08,09,0A
M1 13 ------------ BI1005450302X1 DISPLAY WINDOW (Addition) 1 07,08,09,0A
M1 14 ------------ BI1005480102X1 AD ORNAMENT (Addition) 1 07,08,09,0A
M1 35 ------------ BI2035200101X1 BRACKET (Addition) 1 03,04,05,06,07,08,09,0A
Electrical parts list Main board [01]
Part No.
!Symbol o
r
<Rev.001> <Rev.002> Part Name Description Qty Models
01 U801 ------------ BI100NS9543000 IC (Addition) 1 03,04,05,06
01 Q323 ------------ DTC114TK DIGI TRANSISTOR (Addition) 1 03,04,05,06,07,08,09,0A
01 D324 ------------ MTZJ20B Z DIODE (Addition) 1 03,04,05,06,07,08,09,0A
01 C437 ------------ BICC475250KA02 C CAPACITOR (Addition) 1 03,04,05,06,07,08,09,0A
!01 R303 BIRCW0100050X ------------ RESISTOR (Deletion) 1 01,02
!01 R303 ------------ BIRCW0100050X RESISTOR (Addition) 1 01,03,04,05,06,07,08,09,0A
01 R330 ------------ BIRC0000025A00 C RESISTOR (Addition) 1 03,04,05,06,07,08,09,0A
01 R357 ------------ BIRC0000105A00 C RESISTOR (Addition) 1 03,04,05,06
01 R357 ------------ BIRC1830105A00 C RESISTOR (Addition) 1 07,08,09,0A
01 CN302A ------------ BI12S30063X SOCKET CONN (Addition) 1 03,04,05,06
01 CN307A ------------ BI12P30293X CONNECTOR (Addition) 1 03,04,05,06,07,08,09,0A
01 RN801 ------------ BIRN1020105A40 C RESISTOR (Addition) 1 03,04,05,06
DC jack board [05]
Part No.
!Symbol or <Rev.001> <Rev.002> Part Name Description Qty Models
05 CN307B ------------ BI240V03396M01 CONNECTOR (Addition) 1 03,04,05,06,07,08,09,0A
05 JK204 ------------ BI23A0541X DC POWER JACK (Addition) 1 03,04,05,06,07,08,09,0A
Packing and accessories [M3]
Part No.
!Symbol o
r
<Rev.001> <Rev.002> Part Name Description Qty Models
M3 A1 ------------ BI440002109000 INST BOOK (Addition) 1 03
M3 A1 ------------ BI440002089000 INST BOOK (Addition) 1 04
M3 A1 ------------ BI440002108000 INST BOOK (Addition) 1 05
M3 A1 ------------ BI440002126000 INST BOOK (Addition) 1 06
M3 A1 ------------ BI440002127000 INST BOOK (Addition) 1 07
M3 A1 ------------ BI440002107000 INST BOOK (Addition) 1 08
M3 A1 ------------ BI440002092000 INST BOOK (Addition) 1 09
M3 A1 ------------ BI440002125000 INST BOOK (Addition) 1 0A
M3 A3 ------------ BI400083291001 REGISTER CARD (Addition) 1 03
M3 A4 ------------ ------------ WARRANTY CARD (Addition) 1 03,04,05,06
M3 A4 ------------ ------------ WARRANTY CARD (Addition) 1 07,08,09,0A
M3 A5 ------------ BIG60NXPN702BX REMOCON UNIT (Addition) 1 03,04,05,06
M3 A8 ------------ ------------ BATTERY (Addition) 1 01,02,03,04,05,06,07,08,09,0A
!M3 A9 ------------ BI212011030001 AC ADAPTOR (Addition) 1 03
!M3 A9 ------------ BI212011023001 AC ADAPTOR (Addition) 1 04,05,06,08,09,0A
!M3 A9 ------------ BI212011029001 AC ADAPTOR (Addition) 1 07
M3 A10 ------------ ------------ WARRANTY CARD (Addition) 1 07,08,09,0A
!M3 A11 ------------ BI23A0095X CONVERSION
PLUG (Addition) 1 08,09,0A

(MB675-R002) 11
Part No.
!Symbol o
r
<Rev.001> <Rev.002> Part Name Description Qty Models
M3 P1 ------------ BI410011378001 CARTON (Addition) 1 03,04,05,06
M3 P1 ------------ BI410011411001 CARTON (Addition) 1 07,08,09,0A
M3 XXXXX ------------ ------------ BATTERY (Deletion) 1 01,02

1-2 (No.MB675<Rev.002>)
SPECIFICATION
NX-PN7J,C
Design and specifications are subject to change without notice.
Amplifier
Output Power without iPod
7.5W per channel min. RMS driven into 8 Ω at 1 kHz with no more than 10% total harmonic distortion
with an iPod 7.0W per channel min. RMS driven into 8 Ω at 1 kHz with no more than 10% total harmonic distortion
with two iPod devices 6.3W per channel min. RMS driven into 8 Ω at 1 kHz with no more than 10% total harmonic distortion
Terminals
AUDIO IN Input Sensitivity/
Impedance (1 kHz) LEVEL 1: 500 mV/47 kΩ
LEVEL 2: 250 mV/47 kΩ
LEVEL 3: 125 mV/47 kΩ
Dock A and B for iPod
* Only for still picture. Compatible iPod types iPod nano 1GB/2GB/4GB Audio yes
Video no
iPod nano (2nd Generation) 2GB/4GB/8GB Audio yes
Video no
iPod nano (3rd Generation) 4GB/8GB Audio yes
Video yes
iPod mini 4GB Audio yes
Video no
iPod mini (2nd Generation) 4GB/ 6GB Audio yes
Video no
iPod (4th Generation) 20GB/40GB Audio yes
Video no
iPod photo (4th Generation) 20GB/30GB/40GB/60GB Audio yes
Video yes*
iPod video (5th Generation) 30GB/60GB/80GB Audio yes
Video yes
iPod classic 80GB/160GB Audio yes
Video yes
iPod touch 8GB/16GB/32GB Audio yes
Video yes
iPhone 4GB/8GB/16GB Audio yes
Video yes
Output power (each iPod) DC 5 V=500 mA
VIDEO OUT (For iPod) Composite
PHONES 32 Ω- 1 kΩ
15 mW/ch output into 32 Ω
Tuner
FM tuning range 87.5 MHz - 108.0 MHz (100 kHz channel space)
AM tuning range 530 kHz - 1710 kHz (10 kHz channel space)
Unit
Dimensions (W/H/D) 318 mm ×148 mm ×154 mm (12-9/16 inches ×5-7/8 inches ×6-1/8 inches)
Mass Approx. 2.6 kg (5.8 lbs)
Speaker Specifications
Type Full range bass-reflex type
Speakers 7 cm (2-13/16 inches) cone ×2
Impedance 8 Ω
Power Specifications
Power Requirements AC 120V~60 Hz, 0.4 A
Power Consumption 35 W (power on mode)
4 W or less (in Standby mode)
2 W or less (in ECO mode)
19 W (in Standby mode with two iPod devices connected.)

(No.MB675<Rev.002>)1-3
NX-PN7BEENEV
Design and specifications are subject to change without notice.
Amplifier
Output Power 10 W (5 W + 5 W) at 8 Ω(10% THD) (IEC268-3)
Terminals
AUDIO IN Input Sensitivity/
Impedance (1 kHz) LEVEL 1: 500 mV/47 kΩ
LEVEL 2: 250 mV/47 kΩ
LEVEL 3: 125 mV/47 kΩ
Dock A and B for iPod
* Only for still picture. Compatible iPod types iPod nano 1GB/2GB/4GB Audio yes
Video no
iPod nano (2nd Generation) 2GB/4GB/8GB Audio yes
Video no
iPod nano (3rd Generation) 4GB/8GB Audio yes
Video yes
iPod mini 4GB Audio yes
Video no
iPod mini (2nd Generation) 4GB/ 6GB Audio yes
Video no
iPod (4th Generation) 20GB/40GB Audio yes
Video no
iPod photo (4th Generation) 20GB/30GB/40GB/60GB Audio yes
Video yes*
iPod video (5th Generation) 30GB/60GB/80GB Audio yes
Video yes
iPod classic 80GB/160GB Audio yes
Video yes
iPod touch 8GB/16GB/32GB Audio yes
Video yes
iPhone 4GB/8GB/16GB Audio yes
Video yes
Output power (each iPod) DC 5 V 500 mA
VIDEO OUT (For iPod) Composite
PHONES 32Ω1 kΩ
15 mW/ch output into 32 Ω
Tuner
FM tuning range 87.50 MHz - 108.00 MHz
Unit
Dimensions (W/H/D) 318 mm ×148 mm ×154 mm
Mass Approx. 1.6 kg
Speaker Specifications
Type Full range bass-reflex type
Speakers 7 cm cone ×2
Impedance 8 Ω
Power Specifications
Power Source DC 10.7 V 3 A (EXTERNAL DC IN)
ACAdaptor(AA-R1001) INPUT AC 110 - 240 V 50 Hz/60 Hz 1 A
OUTPUT DC 10.7 V 3 A 32.1 VA
Power Consumption 35 W (power on mode)
4 W or less (in Standby mode)
1 W or less (in ECO mode)
19 W (in Standby mode with two iPod devices connected.)

1-4 (No.MB675<Rev.002>)
NX-PN7AUSUJUW
Design and specifications are subject to change without notice.
Amplifier
Output Power 10 W (5 W + 5 W) at 8Ω(10% THD) (IEC268-3)
Terminals
AUDIO IN Input Sensitivity/
Impedance (1 kHz) LEVEL 1: 500 mV/47 kΩ
LEVEL 2: 250 mV/47 kΩ
LEVEL 3: 125 mV/47 kΩ
Dock A and B for iPod
* Only for still picture. Compatible iPod types iPod nano 1GB/2GB/4GB Audio yes
Video no
iPod nano (2nd Generation) 2GB/4GB/8GB Audio yes
Video no
iPod nano (3rd Generation) 4GB/8GB Audio yes
Video yes
iPod mini 4GB Audio yes
Video no
iPod mini (2nd Generation) 4GB/ 6GB Audio yes
Video no
iPod (4th Generation) 20GB/40GB Audio yes
Video no
iPod photo (4th Generation) 20GB/30GB/40GB/60GB Audio yes
Video yes*
iPod video (5th Generation) 30GB/60GB/80GB Audio yes
Video yes
iPod classic 80GB/160GB Audio yes
Video yes
iPod touch 8GB/16GB/32GB Audio yes
Video yes
iPhone 4GB/8GB/16GB Audio yes
Video yes
Output power (each iPod) DC 5 V 500 mA
VIDEO OUT (For iPod) Composite
PHONES 32Ω1 kΩ
15 mW/ch output into 32 Ω
Tuner
FM tuning range 87.50 MHz-108.00 MHz
Unit
Dimensions (W/H/D) 318 mm ×148 mm ×154 mm
Mass Approx. 1.6 kg
Speaker Specifications
Type Full range bass-reflex type
Speakers 7 cm cone ×2
Impedance 8 Ω
Power Specifications
Power Source DC 10.7 V 3 A (EXTERNAL DC IN)
ACAdaptor (AA-R1001) INPUT AC 110 - 240 V , 50 Hz/60 Hz 1 A
OUTPUT DC 10.7 V 3 A
Power Consumption: 35 W (power on mode)
4 W or less (in Standby mode)
1 W or less (in ECO mode)
19 W (in Standby mode with two iPod devices connected.)

(No.MB675<Rev.002>)1-5
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 fromvisual 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 besure 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

1-6 (No.MB675<Rev.002>)
1.5 Safety Precautions (U.K only)
(1) This design of this productcontains special hardware and many circuits and components specially for safety purposes. For con-
tinued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replace-
ment parts must be identical to those used in the original circuits.
(2) Any unauthorised design alterations or additions will void the manufacturer's guarantee; furthermore the manufacturer cannot
accept responsibility for personal injury or property damage resulting therefrom.
(3) Essential safety critical components are identified by ( ) on the Parts List and by shading on the schematics, and must never
be replaced by parts other than those listed in the manual. Please note however that many electrical and mechanical parts in
the product have special safety related characteristics. These characteristics are often not evident from visual inspection. Parts
other than specified by the manufacturer may not have the same safety characteristics as the recommended replacement parts
shown in the Parts List of the Service Manual and may create shock, fire, or other hazards.
(4) The leads inthe products arerouted and dressed withties, clamps, tubings, barriers and thelike 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.
1.5.1 Warning
(1) Service should be performed by qualified personnel only.
(2) This equipment has been designed and manufactured to meet international safety standards.
(3) It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
(4) Repairs must be made in accordance with the relevant safety standards.
(5) It is essential that safety critical components are replaced by approved parts.
(6) If mains voltage selector is provided, check setting for local voltage.
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.

(No.MB675<Rev.002>)1-7
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
SECTION 3
DISASSEMBLY
3.1 Main body (Used figure are NX-PN7J)
3.1.1 Removing the Rear cabinet (See Fig.1, 2)
(1) Remove the thirteen screws Aattaching the Rear cabinet.
(See Fig.1)
(2) Disconnect the card wire from LCD board connected to
connector CN308 of the Main board. (See Fig.2)
(3) Disconnect the connector wire from LED board connected
to connector CN713A of the Main board. (See Fig.2)
(4) Disconnect the connector wire from iPod board connected
to connector CN710A of the Main board. (See Fig.2)
(5) Disconnect the connector wire from iPod board connected
to connector CN711A of the Main board. (See Fig.2)
(6) Disconnect the connector wire from LED board connected
to connector CN712A of the Main board. (See Fig.2)
(7) Disconnect the connector wire from Speakers connectedto
connector CN304 of the Main board. (See Fig.2)
Fig.1
Fig.2
A
A
CN308 CN710A CN711ACN304
CN713A CN712A

1-8 (No.MB675<Rev.002>)
3.1.2 Removing the Main board (See Fig.3 to 5)
(1) Disconnect the connector wires from Jack board connect-
ed to connector CN301A, CN302A and CN306A of the
Main board. (See Fig.3)
(2) Disconnect the Earth wire connected to post pin WP304 of
the Main board. (See Fig.3)
(3) Disconnect the connector wire from AC adapter connected
to connector CN307A of the Main board. (See Fig.3)
(4) Remove the two screws Battaching the Antenna terminal.
(See Fig.4)
(5) Remove the three screws Cattaching the Main board. (See
Fig.5)
Fig.3
Fig.4
Fig.5
3.1.3 Removing the AC adapter (See Fig.6)
(1) Remove the two screws Dattaching the AC adapter.
3.1.4 Removing the Jack board (See Fig.6)
(1) Remove the one screw Eattaching the Jack board.
Fig.6
3.1.5 Removing the LCD board (See Fig.7)
(1) Remove the seven screws Fattaching the LCD board.
Fig.7
CN302A CN301A CN306A CN307A
WP304
B
C
D
E
F

(No.MB675<Rev.002>)1-9
3.1.6 Removing the LED boards (See Fig.8)
Remove the two screws Gattaching the LED boards.
Fig.8
3.1.7 Removing the iPod board (See Fig.9 to 12)
(1) Remove the twelve screws Hattaching the Speaker cov-
ers. (See Fig.9)
(2) Remove the four screws Jattaching the Duct. (See Fig.10)
(3) Remove the four screws Kattaching the Holder. (See
Fig.11)
(4) Remove the five screws Lattaching the iPod board. (See
Fig.12)
(5) Turn over the iPod board and then remove the cover
spring.
Fig.9
Fig.10
Fig.11
Fig.12
G
H
H
J
K
L
Cover spring