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
AVH-P4050DVD/XNCN5
CRT4120
DVD AV RECEIVER
AVH-P4050DVD
/XNCN5
AVH-P4050DVD/XN/RC
AVH-P4050DVD/XN/RD
AVH-P4050DVD/XN/RI
This service manual should be used together with the following manual(s):
Model No.
Order No.
Mech.Module
Remarks
CX-3212
CRT3896
MS5
DVD Mech. Module : Circuit Descriptions, Mech. Descriptions, Disassembly
For details, refer to "Important Check Points for Good Servicing".
K-ZZZ. FEB. 2008 Printed in Japan
Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic", and the double-D symbol
are trademarks of Dolby Laboratories.
Manufactured under license under U.S. Patent #: 5,451,942 & other U.S. and worldwide patents issued &
pending. DTS and DTS Digital Out are registered trademarks and the DTS logos and Symbol are trade-
marks of DTS, Inc. © 1996-2007 DTS, Inc. All Rights Reserved.
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SAFETY INFORMATION
CAUTION
This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfe.
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.
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
Wave length:
DVD:640 nm to 660 nm
CD:770 nm to 810 nm
DVD : 2.48 mW(Emitting period :9 sec.)
CD : 705 W(Emitting period : unlimited)
Where in a manufacturer's service documentation, for example in circuit diagrams or lists
of components, a symbol is used to indicate that a specific component shall be replaced only
by the component specified in that documentation for safety reasons, the following symbol shall
be used:
1. Safety Precautions for those who Service this Unit.
Follow the adjustment steps in the service manual when servicing this unit. When check -
ing or adjusting the emitting power of the laser diode exercise caution in order to get safe, reliable results.
Caution:
1. During repair or tests, minimum distance of 13 cm from the focus lens must be kept.
2. During repair or tests, do not view laser beam for 10 seconds or longer .
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Additional Laser Caution
Transistors Q1101 and Q1102 in PCB drive the laser diodes for DVD and CD
respectively. When Q1101 or Q1102 is shorted between their terminals,
the laser diodes for DVD or CD will radiate beam. If the top cover is removed
with no disc loaded while such short-circuit is continued, the naked eyes may
be exposed to the laser beam.
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replaced only with the same or equivalent type recommended by the manufacture.
Discord used batteries according to the manufacture's instructions.
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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 SERVICE PRECAUTIONS .........................................................................................................................6
1.2 NOTES ON SOLDERING ...........................................................................................................................7
2. SPECIFICATIONS.............................................................................................................................................8
2.1 SPECIFICATIONS ......................................................................................................................................8
2.2 DISC/CONTENT FORMAT .......................................................................................................................11
2.3 PANEL FACILITIES...................................................................................................................................12
2.4 CONNECTION DIAGRAM........................................................................................................................15
3. BASIC ITEMS FOR SERVICE ........................................................................................................................16
3.1 CHECK POINTS AFTER SERVICING .....................................................................................................16
3.2 PCB LOCATIONS .....................................................................................................................................17
3.3 JIGS LIST .................................................................................................................................................18
3.4 CLEANING ...............................................................................................................................................18
4. BLOCK DIAGRAM ..........................................................................................................................................20
5. DIAGNOSIS ....................................................................................................................................................30
5.1 OPERATIONAL FLOWCHART .................................................................................................................30
5.2 INSPECTION METHOD OF PICKUP UNIT .............................................................................................31
5.3 DIAGNOSIS FLOWCHART ......................................................................................................................34
5.4 ERROR CODE LIST.................................................................................................................................56
5.5 CONNECTOR FUNCTION DESCRIPTION .............................................................................................58
6. SERVICE MODE.............................................................................................................................................59
6.1 DVD TEST MODE ....................................................................................................................................59
6.2 CALIBRATION TEST MODE ....................................................................................................................62
6.3 MONITOR TEST MODE ...........................................................................................................................62
7. DISASSEMBLY ...............................................................................................................................................63
8. EACH SETTING AND ADJUSTMENT ............................................................................................................67
8.1 DVD ADJUSTMENT .................................................................................................................................67
8.2 MONITOR PCB ADJUSTMENT ...............................................................................................................74
8.3 MOTHER PCB ADJUSTMENT.................................................................................................................77
8.4 INVERTOR PCB ADJUSTMENT..............................................................................................................79
8.5 TOUCH PANEL ADJUSTMENT................................................................................................................81
8.6 MONITOR ADJUSTMENT........................................................................................................................89
9. EXPLODED VIEWS AND PARTS LIST ..........................................................................................................98
9.1 PACKING ..................................................................................................................................................98
9.2 EXTERIOR(1) .........................................................................................................................................100
9.3 EXTERIOR(2) .........................................................................................................................................102
9.4 DVD MECHANISM MODULE .................................................................................................................104
10. SCHEMATIC DIAGRAM..............................................................................................................................106
10.1 MOTHER PCB(ANALOG)(1/4)(GUIDE PAGE) .....................................................................................106
10.2 MOTHER PCB(POWER SUPPLY)(2/4) ................................................................................................112
10.3 MOTHER PCB(SYSTEM)(3/4)(GUIDE PAGE) .....................................................................................114
10.4 MOTHER PCB(TUNER)(4/4)................................................................................................................120
10.5 INTERFACE PCB .................................................................................................................................121
10.6 KEYBOARD UNIT ................................................................................................................................122
10.7 DVD CORE UNIT(1/2)(GUIDE PAGE) ..................................................................................................124
10.8 DVD CORE UNIT(2/2) ..........................................................................................................................130
10.9 COMPOUND UNIT(A) AND COMPOUND UNIT(B) .............................................................................132
10.10 MONITOR PCB(MONITOR)(1/2)(GUIDE PAGE)................................................................................134
10.11 MOTHER PCB(OSD,uCOM)(2/2)(GUIDE PAGE) ...............................................................................140
10.12 INVERTOR PCB .................................................................................................................................146
10.13 WAVEFORMS.....................................................................................................................................148
11. PCB CONNECTION DIAGRAM ..................................................................................................................150
11.1 MOTHER PCB ......................................................................................................................................150
11.2 INTERFACE PCB .................................................................................................................................154
11.3 KEYBOARD UNIT ................................................................................................................................155
11.4 DVD CORE UNIT..................................................................................................................................156
11.5 COMPOUND UNIT(A) AND COMPOUND UNIT(B) .............................................................................160
11.6 MONITOR PCB ....................................................................................................................................162
11.7 INVERTOR PCB ...................................................................................................................................166
12. ELECTRICAL PARTS LIST .........................................................................................................................167