Pioneer XW-NAC3-K User manual
ORDER NO.
PIONEER CORPORATION 1-1, Shin-ogura, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0031, Japan
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION
2010
2010 Printed in Japan
XW-NAC3-K
RRV4051
DIGITAL SPEAKER SYSTEM FOR iPod
XW-NAC3-K
XW-NAC3-W
XW-NAC3-R
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model Type Power Requirement Serial No. Remarks
XW-NAC3-K SYXZT5 AC 220 to 240 V &&&&######YY YY : Europe
XW-NAC3-W SYXZT5 AC 220 to 240 V &&&&######YY YY : Europe
XW-NAC3-R SYXZT5 AC 220 to 240 V &&&&######YY YY : Europe
XW-NAC3-K CUXZTSM AC 120 V &&&&######UC UC : U.S., Canada
For details, refer to "Important Check Points for good servicing".
K-IZV MAY
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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SAFETY INFORMATION
This service manual is intended for qualified service technicians; it is not meant for the casual
do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been
trained to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely,
you should not risk trying to do so and refer the repair to a qualified service technician.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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[Important Check Points for Good Servicing]
In this manual, procedures that must be performed during repairs are marked with the below symbol.
Please be sure to confirm and follow these procedures.
1. Product safety
Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by
following the safety instructions described in this manual.
1 Use specified parts for repair.
Use genuine parts. Be sure to use important parts for safety.
2 Do not perform modifications without proper instructions.
Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as
radio/TVinterference and foreign noise.
3 Make sure the soldering of repaired locations is properly performed.
When you solder while repairing, please be sure that there are no cold solder and other debris.
Soldering should be finished with the proper quantity. (Refer to the example)
4 Make sure the screws are tightly fastened.
Please be sure that all screws are fastened, and that there are no loose screws.
5 Make sure each connectors are correctly inserted.
Please be sure that all connectors are inserted, and that there are no imperfect insertion.
6 Make sure the wiring cables are set to their original state.
Please replace the wiring and cables to the original state after repairs.
In addition, be sure that there are no pinched wires, etc.
7 Make sure screws and soldering scraps do not remain inside the product.
Please check that neither solder debris nor screws remain inside the product.
8 There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.
Damaged power cords may lead to fire accidents, so please be sure that there are no damages.
If you find a damaged power cord, please exchange it with a suitable one.
9 There should be no spark traces or similar marks on the power plug.
When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure
connections and suitable usage. Please exchange the power cord if necessary.
aSafe environment should be secured during servicing.
When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries.
Please pay attention to your surroundings and repair safely.
2. Adjustments
To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification.
Adjustments should be performed in accordance with the procedures/instructions described in this manual.
4. Cleaning
For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper
cleaning should be performed to restore their performances.
3. Lubricants, Glues, and Replacement parts
Use grease and adhesives that are equal to the specified substance.
Make sure the proper amount is applied.
5. Shipping mode and Shipping screws
To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be
installed before shipment. Please be sure to follow this method especially if it is specified in this manual.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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CONTENTS
SAFETY INFORMATION ..........................................................................................................................................................2
1. SERVICE PRECAUTIONS ....................................................................................................................................................5
1.1 NOTES ON SOLDERING ...............................................................................................................................................5
2. SPECIFICATIONS .................................................................................................................................................................6
2.1 SPECIFICATIONS...........................................................................................................................................................6
2.2 PANEL FACILITIES .........................................................................................................................................................7
3. BASIC ITEMS FOR SERVICE...............................................................................................................................................9
3.1 CHECK POINTS AFTER SERVICING............................................................................................................................9
3.2 PCB LOCATIONS .........................................................................................................................................................10
3.3 JIGS LIST......................................................................................................................................................................11
4. BLOCK DIAGRAM...............................................................................................................................................................12
4.1 OVERALL WIRING DIAGRAM......................................................................................................................................12
4.2 OVERALL BLOCK DIAGRAM .......................................................................................................................................14
5. DIAGNOSIS.........................................................................................................................................................................16
5.1 DIAGNOSIS FLOWCHART...........................................................................................................................................16
5.2 NETWORK ASSY TROUBLESHOOTING ....................................................................................................................17
5.3 ADAPTER PORT TROUBLESHOOTING......................................................................................................................23
5.4 BT ADAPTER TROUBLESHOOTING...........................................................................................................................24
5.5 iPod TROUBLESHOOTING ..........................................................................................................................................26
5.6 ERROR INDICATIONS AND PROTECTION CIRCUITS...............................................................................................27
6. SERVICE MODE .................................................................................................................................................................29
6.1 SERVICE TEST MODE.................................................................................................................................................29
7. DISASSEMBLY....................................................................................................................................................................32
8. EACH SETTING AND ADJUSTMENT ................................................................................................................................37
8.1 DISPLAY OF MICROCOMPUTER SOFTWARE VERSIONS .......................................................................................37
8.2 FIRMWARE UPDATE METHOD ...................................................................................................................................38
9. EXPLODED VIEWS AND PARTS LIST...............................................................................................................................40
9.1 PACKING SECTION......................................................................................................................................................40
9.2 EXTERIOR SECION .....................................................................................................................................................42
10. SCHEMATIC DIAGRAM ....................................................................................................................................................46
10.1 DOCK and BLUETOOTH PCB ASSYS.......................................................................................................................46
10.2 MAIN PCB ASSY (1/8)................................................................................................................................................48
10.3 MAIN PCB ASSY (2/8)................................................................................................................................................50
10.4 MAIN PCB ASSY (3/8)................................................................................................................................................52
10.5 MAIN PCB ASSY (4/8)................................................................................................................................................54
10.6 MAIN PCB ASSY (5/8)................................................................................................................................................56
10.7 MAIN PCB ASSY (6/8)................................................................................................................................................58
10.8MAIN PCB ASSY (7/8)................................................................................................................................................60
10.9 MAIN PCB ASSY (8/8)................................................................................................................................................62
10.10 DISPLAY and OPERATION PCB ASSYS .................................................................................................................64
10.11 POWER PCB ASSY..................................................................................................................................................66
10.12 NETWORK ASSY .....................................................................................................................................................68
10.13 BLUETOOTH ADAPTER...........................................................................................................................................70
11. PCB CONNECTION DIAGRAM ........................................................................................................................................72
11.1 DOCK and BLUETOOTH PCB ASSYS.......................................................................................................................72
11.2 MAIN PCB ASSY ........................................................................................................................................................74
11.3 DISPLAY and OPERATION PCB ASSYS ...................................................................................................................76
11.4 POWER PCB ASSY....................................................................................................................................................78
11.5 NETWORK ASSY .......................................................................................................................................................80
12. PCB PARTS LIST ..............................................................................................................................................................82
13. IC INFORMATION .............................................................................................................................................................84
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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1. SERVICE PRECAUTIONS
1.1 NOTES ON SOLDERING
• For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.
Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs
accompanied by reworking of soldering.
• Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40 ºC.
Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 ºC in general, although
the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of
the soldering iron.
Do NOT use a soldering iron whose tip temperature cannot be controlled.
Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting
temperatures (hard to melt/easy to harden).
The following lead-free solders are available as service parts:
• Parts numbers of lead-free solder:
GYP1006 1.0 in dia.
GYP1007 0.6 in dia.
GYP1008 0.3 in dia.
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TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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2. SPECIFICATIONS
2.1 SPECIFICATIONS
About iPod/iPhone
Before using the remote control
Accessories
Remote control ×1
(076D0RR021: SYXZT5)
(076D0RR041: CUXZTSM)
Lithium battery (CR2025) ×1
(included remote control unit)
Power cord ×1
(1206158802: SYXZT5)
(120Q008901: CUXZTSM)
• Amplifier section
RMS Power Output:
Front Left/Right..................................................10 W+ 10 W
(1 kHz, 10 %, T.H.D., 8 Ω)
• Speaker section
Enclosure......................................................Passive radiater
System.............................................................1-way system
Speakers:
Fullrange........................................................6.6 cm cone
Passive radiator.............................................7.7 cm cone
Frequency range...........................................60 Hz to 20 kHz
• Network section
LANterminal.....................................................Ethernet jack
10BASE-T/100BASE-TX
• Miscellaneous
iPod a..................................................................5 V, 500 mA
iPod b..................................................................5 V, 500 mA
USB.....................................................................5 V, 500 mA
Bluetooth Adapter...............................................5 V, 100 mA
Power requirements
............AC 220 Vto 240 V, 50 Hz/60 Hz (SYXZT5)
.................................AC 120 V/60 Hz (CUXZTSM)
Power consumption........................................................24 W
In standby.................................................................0.5 W
Dimensions...........410 mm (W) x 135 mm (H) x 153 mm (D)
Weight (without package).............................................2.9 kg
• Accessories
Remote control.....................................................................1
Lithium battery (CR2025).....................................................1
Power cord...........................................................................1
USB terminal cover (included with product).........................1
Warranty card (SYXZT5 only)..............................................1
Operating instructions..........................................................1
• Specifications and the design are subject to possible
modifications without notice,due to improvements.
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TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
Item to be checked regarding video Item to be checked regarding audio
Disturbed image Distortion
Too dark Noise
Too bright Volume too low
Mottled color Volume too high
Volume fluctuating
Sound interrupted
No. Procedures Check points
1
2
3
4
5
6
Confirm whether the customer complain has been solved. The customer complain must not be reappeared.
Audio and operations must be normal.
Check the iPod a and b playback. Video and sound must be normal, without noise.
Playback operations must be controlled with the remote control
unit of the main unit.
Check the Bluetooth audio playback. Sound and operations must be normal, without noise.
Check the AUX (AUX input) playback. Sound and operations must be normal, without noise.
Check the appearance of the product. No scratches or dirt on its appearance after receiving it for
service.
Check the Internet radio, Network audio and USB playback. Sound and operations must be normal, without noise.
Items to be checked after servicing
To keep the product quality after servicing, confirm recommended check points shown below.
See the table below for the items to be checked regarding video and audio.
Note:
For confirmation of Items No. 2 to No. 5 after disassembling and repairing a product, play back music louder than usual,
in order to check that VOCAL audio and bass reproduction are normal.
(These are for final confirmation that antivibration parts for the cabinet have properly assembled.)
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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3.2 PCB LOCATIONS
A
DOCK
PCB ASSY
B
BLUETOOTH
PCB ASSY
LCD ASSY
NETWORK ASSY
Speaker (SP2002)
Speaker (SP2004)
Speaker (SP2003)
Speaker (SP2001)
C
G
MAIN
PCB ASSY
D
DISPLAY
PCB ASSY
E
OPERATION
PCB ASSY
Bluetooth
Adapter
F
POWER
PCB ASSY
1..DOCK PCB ASSY A11202AFF0
1..BLUETOOTH PCB ASSY A11202AFG0
1..MAIN PCB ASSY (SYXZT5) A11202AF40
1..MAIN PCB ASSY (CUXZTSM) A11201AF40
1..DISPLAY PCB ASSY A11202ADP0
1..OPERATION PCB ASSY A11202A270
1..POWER PCB ASSY A11202A240
1..LCD ASSY A11202A330
1..NETWORK ASSY AWX9710
1..Bluetooth Adapter AXX7264
1..Speaker (SP2001, SP2002) 66-219PA/XTW
1..Speaker (SP2003, SP2004) SWP1032-A/XTW
Mark No. Description Part No. Mark No. Description Part No.
LIST OF ASSEMBLIES
NOTES:
-
Parts marked by “NSP” are generally unavailable because they are not in our Master Spare Parts List.
-
The >mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
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TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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3.3 JIGS LIST
Jigs List
Jig Name Part No. Purpose of use / Remarks
Interface jig GGF1348 For microcomputer software update
7P FFC VDA1681
25P FFC GGD1309 Diagnosis of MAINPCB, MAINPCB (CP7002) ↔DOCK PCB (CP703)
7P FFC VDA1681 Diagnosis of MAINPCB, MAINPCB (CP1001) ↔OPERATIONPCB (CP601)
Service remote control unit GGF1381 For diagnosis
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TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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4. BLOCK DIAGRAM
4.1 OVERALL WIRING DIAGRAM
ADOCK PCB ASSY
(A11202AFF0)
BBLUETOOTH
PCB ASSY
(A11202AFG0)
FPOWER PCB ASSY
(A11202A240)
MAIN PCB ASSY
(SYXZT5: A11202AF4
(CUXZTSM: A11201A
C
C C
1/8- 8/8
-
When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".
-
The >mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
-
: The power supply is shown with the marked box.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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EOPERATION
PCB ASSY
(A11202A270) G
NETWORK ASSY
(AWX9710)
LCD ASSY
(A11202A330)
DDISPLAY PCB ASSY
(A11202ADP0)
B ASSY
A11202AF40)
M: A11201AF40)
C
/8- 8/8
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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4.2 OVERALL BLOCK DIAGRAM
VP+5 P.CON+5V
VIB+5 P.CON+5V
VIA+5 P.CON+5V
SPI
UART (iPod_a Control)
FAULT
P.CON+5V
Audio
selecter
& buffer
BD3841FS
P.CON+12V
UART (AS-BT100 Control)
iPod_b
BT
AUX
V+3R3
iPod_a
P.CON+5VV+3R3
Bluetooth
iPod_a
iPod_b
AUX IN
USB
V5USB
AAT4614
AIGU-2 P.CON+NET5V
3.3V
Regulator
3.3V
Regulator
1.8V
Regulator
LAN
Contoller
RTL8201
USB D+/D-
Network
R
16.9
MCLK
BCK
LRCK
MCLK
DATA1
LRCK
DATA
BCK
LRCK
DATA0
MCLK
24.576MHz
YEK
USB data
LED
BCK
iPod_a
iPod_b
BT
AUX
Network/USB
DAC
PCM1742
Network
BridgeCo
DM850E
ADC
AK5358AET
MASTER
ADC
AK5358AET
SLAVE
TC
0
VI+3R3
SUB_POW
iPod-b_Det
Control
AccID
AccDet
iPod-a_Det
Control
AAT4614
AIGU-2
AAT4614
AIGU-2
Sub Ucom
UPD78F1164
AGF-GAS-K
iPod
cert
549k
FAULT
AccID
AccDet
UART
549k
(iPod_b Control)
CKS5712
AAT4614
AIGU-2
UART (AS-BT100 Control)
AUX_DET
AUX_DET
POWER LED TIMER/SLEEP LED KEY
LED
POWER
VOLUME +
VOLUME -
FUNCTION
Shuffle 2
iPod-a
iPod-b
MAIN-SUB
Video SW, MUTE
Video SW, MUTE
Video OUT
MFI514S0117MFI514S0117
IC1703
IC1704
IC8300
NJM41010F1
IC8301
IC3000
IC3001
IC7006
IC7005
IC7003
IC7300
IC7301
IC7000
IC100
V+3R
V+3R3 P.CON+5V
IC801
IC21 IC11
IC31
IC701
IC861
Reset
A
DOCK PCB
ASSY
B
BLUETOOTH
PCB ASSY
C
MAIN PCB ASSY
E
OPERATION
PCB ASSY
G
NETWORK
ASSY
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15
XW-NAC3-K
56 7 8
56 7 8
A
B
C
D
E
F
Digital Audio Line (MCLK)
Control Signal Bus Digital Audio Line (BCK)
Analog Audio Line Digital Audio Line (LRCK)
Composite Video Line Digital Audio Line (DATA)
AT+3.3V
RESET
IC
EEPROM
16.9344MHz
MCLK
BCK
LRCK
MCLK
DATA1
LRCK
XTAL
DATA0
MCLK
BCK
DATA0
LRCK
DATA1
DATA
MCLK
BCK
LRCK
1.25V
Regulator
V+3R3
V+1R2
V+3R3V+B
D/D
converter
with isolation
Rectification
Live
EMI
Filter Neutral
AT+3.8V
IR
LCD Control
LED indicator
YEK
LED
BCK
DSP
DSPB56374AE
SLAVE
Digital AMP
TAS5707
TC7WU
04FU
SUB_POW
UART (AS-BT100 Control)
AUX_DET
LCD
V+3R3
b-doPia-doPi Shuffle × Shuffle
LED indicator
LCD Control
MAIN-SUB
Video SW, MUTE System Ucom
UPD78F1164
AGF-GAS-K
IC2000
IC2001
IC1001 IC1002
IC1000
IC2005
IC2004
IC2002
SCL,SDA
SCL,SDA
ACDET
POWER FAIL
POWER FAIL
V+B
3.8V
DC/DC
LV5809MX
SIGNAL_POW
V+3R3
FET switch
AT+3.8V
PWR CONT
PWR CONT
12VReg
BA00BC0WFP
P.CON+12V
5VDC/DC
LV5809MX
P.CON+5V
ON/OFF Control
ON/OFF Control
5VDC/DC
LV5809MX
P.CON+NET5V
ON/OFF Control
AC inlet
Speaker OUT
14V
14V
IC1705 IC1701
IC1706
IC1702
IC1700
Power Supply
F
POWER PCB ASSY
LCD
ASSY
D
DISPLAY
PCB ASSY
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16 XW-NAC3-K
12 3 4
A
B
C
D
E
F
12 3 4
5. DIAGNOSIS
5.1 DIAGNOSIS FLOWCHART
No power
• Checking the voltages for V+B and SIGNAL POW
• Checking the voltage
of AT+3.3 V
No
No
No
• Checking internal cable connections
Yes
Yes
• Checking the POWER PCB Assy alone
Yes
No
• Checking the voltage of AT+3.8 V
Yes
• Checking that the microcomputers are reset. No
No
Yes
Yes
• Checking if a protection circuit was activated.
No
• Checking that the main clock for
the microcomputers is oscillating.
Yes
No
• Checking ACDET
Yes
No
Yes
Plug the power cord in (Standby mode).
Are V+B
and SIGNAL POW
nearly 14 V?
• Check that IC1701 and its
peripheral parts are not
damaged.
• Check that the line for AT
+3.3 Vis not short-circuited.
Is AT+3.3 V
nearly 3.3 V?
Is Pin 90 of System
Ucom (IC1000) nearly
3.3 V?
Is X1001
continuously
oscillating?
• Check that the path between Pin 1
of CP1700 and Pin 81 of System
Ucom (IC1000) is not broken or
short-circuited.
• Replace the POWER PCB Assy.
Is Pin 81 of System
Ucom (IC1000) nearly
3.3 V?
Check that System Ucom (IC1000)
and its peripheral parts are not
damaged.
Is AT+3.8 V
nearly 3.8 V?
Check that D1705 is not
damaged.
Has any of the
protection circuits been
activated?
Check the protection
circuits.
Check
Pin 83 (P_ON_Key),
Pin 55 (Key1), and
Pin 74 (REMOCON)
of System Ucom (IC1000).
Perform connections
properly.
Replace the POWER
PCB Assy.
Check that +B and SIGNAL POWon the
MAINPCB Assy are not short-circuited.
Are the cables
properly connected?
Is the
output from the
POWER PCB Assy
14 V?
Remove the POWER PCB Assy to check it alone.
Press the POWER key.
Check that IC1001 and its
peripheral parts are not
damaged.
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TEL 13942296513 QQ 376315150 892498299
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17
XW-NAC3-K
56 7 8
56 7 8
A
B
C
D
E
F
5.2 NETWORK ASSY TROUBLESHOOTING
2. Flow chart for isolation of the network malfunction
<Network connection>
• Internet Radio
• Favorites
• Setup
• Recently Played
Only those items are shown.
Malfunction of the main unit
IC881: AYW7326
Network and user defined settings such as
favorites are stored in this IC.
Is LANcable
connected?
No• Check LANcable (straight).
• Check the setting of IP address.
• Check the setting of broadband router.
Ye s
No
No
• Install UPnP server (such as WMP11
and WMP12) on PC.
• Check the operation of the server
software.
Ye s
Is the server
software
working on PC?
• Check the network setting of the
connected device.
• Check if data sharing is permitted on
the connected device.
• Check the audio format compatible
with the used server (software).
→On some servers, neither indication
nor playback is performed even in
the compatible format.
Ye s
Can the list
of the content be
shown?
1. Constitution of the network function
[1] DIAGNOSIS OF THE NETWORK
HOME MEDIA GALLERY
USB
Internet Radio
Server1
Server2
Server3
Favorites
Setup
Recently Played
Information
Network Setup
Firmware Version ⇒
Indicates the version of the firmware.
MAC Address ⇒
Indicates MAC Address.
IP Address ⇒
Indicates IP Address.
Gateway IP ⇒
Indicates Gateway IP.
Proxy Server ⇒
Indicates if Proxy Server is valid or invalid.
Subnet Mask ⇒
Indicates Subnet Mask.
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TEL 13942296513 QQ 376315150 892498299
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18XW-NAC3-K
12 3 4
A
B
C
D
E
F
12 3 4
Malfunction of the main unit
<Internet Radio connection>
Internet Radio does not operate (the sound does not play).
Malfunction of the main unit
Are
radio stations
shown on the
menu?
No• Check LANcable (straight).
• Check the setting of IP address.
•
Check the setting of the broadband router.
Ye s
No
Ye s
Is
selection of
radio stations
possible
?
•
Radio broadcasting is stopped temporarily.
→The station list does not reflect the
actual broadcast condition even if
some broadcasts may have been
stopped or abandoned.
<USB connection>
The unit does not operate (the sound does not play) with
a USB device connected.
Is “USB”
shown on the
Top menu
?
No
• Check that a mass storage device is
connected via the USB port.
• Check the USB bus power.
→A device such as a portable HDD,
whose power consumption is larger
than the USB bus power, cannot be
driven.
• Check the USB file system.
Only FAT16 and FAT32 are supported.
Can the
content be
played?
No
Ye s
Ye s
• Check compatible audio format.
→Some content cannot be played
even if in the compatible format.
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TEL 13942296513 QQ 376315150 892498299
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19
XW-NAC3-K
56 7 8
56 7 8
A
B
C
D
E
F
Insert the connectors securely.
CN10, CN801, CN901(FFC)
No
Ye s
Check the patterns in the path
between CN10 and IC11.
CN10 (Pins1, 2) 5Vinput1
NoNo
Ye s
Check CP1005 of
the MAINPCB Assy.
Ye s
To STEP 2
Are the
connectors
securely
inserted?
Is the
voltage 5 V?
Step 1:Connections
Step 2:Power supply
Is there
any loose
connection of
CN10?
IC11 (Pin 2) 3.3VRegulator IC input (1)
3.3VRegulator IC input (2)
2
3
No
Ye s
Is the
voltage 5 V?
Check the patterns in the path
between CN10 and IC801.
IC801 (Pin 6) USB Power SW4
No
Is the
voltage 5 V?
Check the patterns in the path
between CN10 and IC31.
IC31 (Pin 2)
No
Ye s
Ye s
Is the
voltage 5 V?
Check the patterns in the path
between IC31 and IC701.
Check the patterns in the path
between IC31 and IC861.
IC701 (Pins 3,16,32,43,55,61,78,89,103,
113,125,136,151,158,176,192,201)
NETWORK Media
processor IC
10
11
No
Ye s
Is the
voltage 3.3 V?
IC861 (Pins 14, 36, 48)
No
Ye s
Is the
voltage 3.3 V?
Check the patterns in the path
between IC31 and IC881.
IC881 (Pins 37,47) FLASH ROM7
No
Ye s
Is the
voltage 3.3 V?
Check the patterns in the path
between IC31 and IC891.
IC891 (Pins 1,3,9,14,27,43,49) SDRAM8
No
Ye s
Ye s
Is the
voltage 3.3 V?
Check the patterns in the path
between IC31 and IC911.
IC911 (Pin 14) 5-3 Converter IC9
No
Is the
voltage 3.3 V?
To STEP 1
IC11 (Pin 4), IC21 (Pin 2) 3.3VRegulator IC output (1)
/1.8VRegulator IC input
5
NoNo
Ye s
Replace IC11.
Ye s
Is the
voltage 3.3 V?
Is IC11
abnormally
hot?
The output of IC11 and GND may be
short-circuited. Check the path
between them.
IC31 (Pin 4) 3.3VRegulator IC output (2)6
No
No
Ye s
Ye s
Is the
voltage 3.3 V?
Is the
voltage of IC31
Pin 1 (CONT)
1.8 V?
Check the output
of IC21 (1.8 V).
No
Replace IC31.
Ye s
Is IC31
abnormally
hot?
The output of IC31 and GND may be
short-circuited. Check the path
between them.
A
Ethernet PHY IC
[2] TROUBLESHOOTING
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TEL 13942296513 QQ 376315150 892498299
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20 XW-NAC3-K
12 3 4
A
B
C
D
E
F
12 3 4
A
IC21 (Pin 4) 1.8VRegulator IC output12
Ye s
Is the
voltage 1.8 V?
Replace IC21.
Is IC21
abnormally
hot?
The output of IC21 and GND may be
short-circuited. Check the path
between them.
IC801(Pin 1) USB Power SWoutput14
No
No
Ye s
Is the
voltage 5 V?
Check the patterns in the path
between IC801 and CN801.
CN801(Pin 1) USB Bus power14
No
Is the
voltage 5 V?
Ye s
Power supply is OK.
To Step 3
Ye s
DM850E doesn't operates correctly.
It seems that there are following problems.
• F/Wis not written correctly in FLASH ROM.
• FLASH ROM (IC881) is NG.
• SDRAM (IC891) is NG.
Check the power supply voltage
of IC861 again.
IC861(Pins 46,47)
IC701(Pins 203,204)
XIN/XOUT
IC701(Pin 81) PHYCLK
No
Ye s
OK, DM850E operates correctly.
It can be judged whether DM850E
operates correctly though this
signal is not connected.
No
No
XIN/XOUT
Note: Please confirm it with the USB memory connected
for the content.
NoNo
Ye s
XRST must be high during
operation. Check the patterns
in the path between pin 14 of
CN901 and IC911, check the
MAINPCB Assy.
Ye s
Is
XRST (Pin 190)
high?
Check the parts and patterns
in the path. Replace X701. etc.
No
Check the
MAINPCB Assy.
Replace IC801.
Ye s
No
Is pin 4
(CTL) of IC801
High (3.3 V)?
Check around the
Q801 and Q802.
Ye s
Is pin20
(CTL) of CN901
High?
No
No
Ye s
No
Is pin 1
(CONT) of IC21
3.3 V?
Is pin 15 (POWER) of
CN901 High (3.3 V)?
Ye s
Check the patterns in the path
between IC21 and IC701.
IC701 (Pins 18,38,56,71,86,95,114,128,
144,174,189)
NETWORK Media
processor IC
13
No
Is the
voltage 1.8 V?
Step 3: Operation of Network Media processor IC
Step 4 : Communication between DM850E and
System Ucom
The signal shown by following fig are communication
line of DM850E and System Ucom (IC1000).
Confirm the connection of the signals along these
routes.
Does
the crystal
oscillate at
24.576 MHz?
Does
the crystal
oscillate at
25.000 MHz?
Does
81 pin output the
oscillation signal
of 25 MHz?
fig. 1
CN901 IC911 (5V→3V)IC701
XRST Pin 14 Pin 12 Pin 11 Pin 190
SPI CS Pin 19 Pin 2 Pin 3 Pin 143
SPI CLK Pin 13 Pin 5 Pin 6 Pin 141
SPI TX Pin 17 Pin 9 Pin 8 Pin 147
fig. 2
IC701 IC921 (NM) bypass CN901
SPI RX Pin 146 R925 Pin 16
SPI REQ Pin 100 R924 Pin 18
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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