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 2006
AVH-P7800DVD/UC
CRT3681
MULTI-CD CONTROL DSP HIGH POWER DVD-A/DVD-V/VCD/CD/
MP3/WMA/AAC/DivX JPEG PLAYER WITH FM/AM TUNER
AVH-P7800DVD
/UC
This service manual should be used together with the following manual(s):
"DTS" and "DTS Digital Surround" are registered trademarks of Digital Theater Systems,Inc.
Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.
"Dolby" and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.
Model No.
Order No.
Mech.Module
Remarks
CX-3183
CRT3655
MS4
DVD Mech. Module:Circuit Descriptions, Mech. Descriptions, Disassembly
For details, refer to "Important Check Points for Good Servicing".
K-ZZU. MAY 2006 Printed in Japan
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SAFETY INFORMATION
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.
- Service Precautions
· You should conform to the regulations governing the product (safety, radio and noise, and other regulations),
and should keep the safety during servicing by following the safety instructions described in this manual.
· Be careful in handling ICs. Some ICs such as MOS type are so fragile that they can be damaged by electrostatic
induction.
- DVD section precaution
1. Before disassembling the unit, be sure to turn off
the power. Unplugging and plugging the connectors
during power-on mode may damage the ICs inside
the unit.
2. To protect the pickup unit from electrostatic discharge
during servicing, take an appropriate treatment
(shorting-solder) by referring to "the DISASSEMBLY" .
3. After replacing the pickup unit, be sure to skew
adjustment.
4. During disassembly, be sure to turn the power off since
an internal IC might be destroyed when a connector
is plugged or unplugged.
CAUTION
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.
WARNING
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of
California to cause cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 - Proposition 65
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H/U independent operation
Operation becomes possible even if there is no H/A, when it does in this way.
Since TUN is not connected, TUN sauce does not operate.
Please operate sauce by DVD, AUX, etc.
Short here
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Note) Button unit (CXC6641) is a non-reusable part. When repairing a PCB, repair without removing the button unit.
In case the button unit must be removed, do not reuse the removed button unit and use a new one.
For this product, the button unit, CXC6641, is designated as a non-reusable part because the hook part will come
off once the part is removed from the device.
When repairing the grill, repair without removing CXC6641.
A special technique will be required to install the PCB into the grill with CXC6641 mounted.
As shown in the picture below, assemble CXC9683 with the PCB beforehand. And insert the PCB into the grill by
holding CAC9683 and CXC6641 so that they will not drop off.
CXC6641
Insert into the grill while holding the parts.
Assemble CAC9683 beforehand as shown in the picture.
is a trademark of DVD Format/Logo Licensing Corporation.
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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.
0 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.