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ORDER NO.
PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, 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 2008
2008 Printed in Japan
XV-LX03
RRV3842
DVD/CD RECEIVER
XV-LX03
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model
Type
Power Requirement
Region No.
Remarks
XV-LX03
WVYXJ5
AC 220 V to 240 V
2
XV-LX03
WSXJ5
AC 220 V to 240 V
5
For details, refer to "Important Check Points for good servicing".
T-ZZK AUG.


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SAFETY INFORMATION
LABEL CHECK
Name label
WARNING !
THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1
BUT THE LASER COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR
CLASS 1.
A SPECIALLY INSTRUCTED PERSON SHOULD DO SERVICING OPERATION OF THE APPARATUS.
LASER DIODE CHARACTERISTICS
FOR DVD : MAXIMUM OUTPUT POWER : 5 mW
WAVELENGTH : 650 nm
FOR CD :
MAXIMUM OUTPUT POWER : 5 mW
WAVELENGTH : 780 nm
Additional Laser Caution
: See page 35.
1.
· Laser diode is driving with Q1307 (650 nm LD) and Q1308
(780 nm LD) on the 4IN1 MOD ASSY.
Therefore, when short-circuit between the emitter and
collector of these transistors or the base voltage is supplied
for transistors turn on, the laser oscillates. (failure mode)
· In the test mode
, there is the mode that the laser oscillates
except for the disc judgment and playback. LD ON mode in
the test mode oscillates with the laser forcibly.
2. When the cover is open, close viewing through the objective
lens with the naked eye will cause exposure to the laser beam.
PRW1608
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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[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/TV interference 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.
a Safe 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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CONTENTS
SAFETY INFORMATION ..........................................................................................................................................................2
1. SERVICE PRECAUTIONS ....................................................................................................................................................6
1.1 NOTES ON SOLDERING ...............................................................................................................................................6
1.2 CAUTION ........................................................................................................................................................................6
1.3 WHEN REPLACING DVD MECHA ASSY ......................................................................................................................7
1.4 DISC REMOVAL METHOD AT NO POWER SUPPLY ....................................................................................................7
2. SPECIFICATIONS .................................................................................................................................................................8
2.1 SPECIFICATIONS, DISC/CONTENT FORMAT and ACCESORRIES............................................................................8
2.2 PANEL FACILITIES .......................................................................................................................................................10
3. BASIC ITEMS FOR SERVICE.............................................................................................................................................15
3.1 CHECK POINTS AFTER SERVICING..........................................................................................................................15
3.2 PCB LOCATIONS .........................................................................................................................................................16
3.3 JIGS LIST .....................................................................................................................................................................17
4. BLOCK DIAGRAM...............................................................................................................................................................18
4.1 OVERALL CONNECTION DIAGRAM...........................................................................................................................18
4.2 OVERALL BLOCK DIAGRAM.......................................................................................................................................20
4.3 DVD LOADER/DECODER BLOCK DIAGRAM .............................................................................................................22
5. DIAGNOSIS.........................................................................................................................................................................23
5.1 METHOD FOR DIAGNOSING DEGRADATION OF THE LDS ON THE PICKUP ........................................................23
5.2 DVD TROUBLE SHOOTING.........................................................................................................................................24
5.3 CIRCUIT DESCRIPTION OF DIGITAL AMP SECTION................................................................................................26
5.4 SPECIFICATIONS OF PROTECTION CIRCUITS FOR DIGITAL AMP SECTION .......................................................27
5.5 USB/iPod TROUBLESHOOTING..................................................................................................................................28
5.6 ERROR AND WARNING MESSAGE............................................................................................................................32
6. SERVICE MODE .................................................................................................................................................................35
6.1 TEST MODE .................................................................................................................................................................35
6.2 DISPLAY SPECIFICATION OF THE TEST MODE .......................................................................................................36
6.3 FUNCTIONAL SPECIFICATION OF THE SHORTCUT KEY........................................................................................37
6.4 SPECIFICATION OF MODEL INFORMATION DISPLAY..............................................................................................38
6.5 FUNCTIONAL SPECIFICATION OF THE SERVICE MODE ........................................................................................39
6.6 SERVICE TEST MODE ................................................................................................................................................40
6.7 DISPLAY SPECIFICATIONS OF DSP ERROR ............................................................................................................43
7. DISASSEMBLY....................................................................................................................................................................44
8. EACH SETTING AND ADJUSTMENT ................................................................................................................................55
8.1 ID NUMBER AND ID DATA SETTING...........................................................................................................................55
8.2 HOW TO CONFIRM THE VERSION OF THE FIRMWARE..........................................................................................58
8.3 HOW TO UPDATE THE FIRMWARE ............................................................................................................................59
8.4 HOW TO UPDATE THE DSP FLASH ROM BY PLAYING BACK A CD........................................................................61
9. EXPLODED VIEWS AND PARTS LIST...............................................................................................................................64
9.1 PACKING SECTION .....................................................................................................................................................64
9.2 EXTERIOR SECTION...................................................................................................................................................66
9.3 CHASSIS SECTION .....................................................................................................................................................68
9.4 DVD MECHA ASSY ......................................................................................................................................................70
10. SCHEMATIC DIAGRAM ....................................................................................................................................................72
10.1 4IN1 MOD ASSY (1/6) ................................................................................................................................................72
10.2 4IN1 MOD ASSY (2/6) ................................................................................................................................................74
10.3 4IN1 MOD ASSY (3/6) ................................................................................................................................................76
10.4 4IN1 MOD ASSY (4/6) ................................................................................................................................................78
10.5 4IN1 MOD ASSY (5/6) ................................................................................................................................................80
10.6 4IN1 MOD ASSY (6/6) ................................................................................................................................................82
10.7 AHTS EU SYSMAIN ASSY (1/5) ................................................................................................................................84
10.8 AHTS EU SYSMAIN ASSY (2/5) ................................................................................................................................86
10.9 AHTS EU SYSMAIN ASSY (3/5) ................................................................................................................................88
10.10 AHTS EU SYSMAIN ASSY (4/5) ..............................................................................................................................90
10.11 AHTS EU SYSMAIN (5/5) and AHTS OPT IN ASSYS .............................................................................................92
10.12 AHTS-HTP AMP ASSY (1/2) ....................................................................................................................................94
10.13 AHTS-HTP AMP ASSY (2/2) ....................................................................................................................................96
10.14 AHTS DISPLAY, AHTS MOTION SENSOR and AHTS LED ASSYS........................................................................98
10.15 AHTS TOUCH SENSOR ASSY ..............................................................................................................................100
10.16 EUROSCART ASSY ...............................................................................................................................................102
10.17 POWER SUPPLY UNIT...........................................................................................................................................104
10.18 WAVEFORMS .........................................................................................................................................................106
11. PCB CONNECTION DIAGRAM ......................................................................................................................................108
11.1 4IN1 MOD ASSY ......................................................................................................................................................108
11.2 SYSMAIN and AHTS OPT IN ASSYS ......................................................................................................................112


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11.3 AHTS-HTP AMP ASSY ............................................................................................................................................ 116
11.4 AHTS DISPLAY, AHTS MOTION SENSOR and AHTS LED ASSYS ....................................................................... 118
11.5 AHTS TOUCH SENSOR ASSY................................................................................................................................ 122
11.6 EUROSCART ASSY................................................................................................................................................. 123
11.7 POWER SUPPLY UNIT ............................................................................................................................................ 124
12. PCB PARTS LIST ............................................................................................................................................................ 126