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ORDER NO.
CRT4681
AVH-P2300DVD/XNUC

DVD RDS AV RECEIVER

AVH-P2300DVD /XNUC

AVH-2350DVD/XNRC
AVH-2350DVD/XNRD
AVH-2350DVD/XNRI
AVH-2390DVD/XNID
This service manual should be used together with the following manual(s):
Model No. Order No. Mech.Module Remarks

CX-3250 CRT4300 LS1 DVD Mech. Module : Circuit Descriptions, Mech. Descriptions, Disassembly

For details, refer to "Important Check Points for Good Servicing".

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 2011
K-ZZZ JAN. 2011 Printed in Japan
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SAFETY INFORMATION

A 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

B This product may contain a chemical known to the State of California to cause cancer, or birth defects or other reproductive
harm.
Health & Safety Code Section 25249.6 - Proposition 65

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:

- Safety Precautions for those who Service this Unit.
C
When checking 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.

CAUTION:
USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE
SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

D
CAUTION
This product is a class 1 laser product classi-
fied under the Safety of laser products, IEC
60825-1:2007, and contains a class 1M laser
module. To ensure continued safety, do not re-
move any covers or attempt to gain access to
the inside of the product. Refer all servicing to
qualified personnel.

E
CAUTION--CLASS 1M INVISIBLE LASER
RADIATION WHEN OPEN, DO NOT VIEW
DIRECTLY WITH OPTICAL INSTRUMENTS.

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.
F

AVH-P2300DVD/XNUC
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A
Laser diode characteristics
Wave length:
DVD:660 nm to 670 nm
CD:780 nm to 800 nm
Focus lens on Maximum output:
CD:6.26 mW(Emitting period :9 sec.)
DVD:1.27 mW (Emitting period : unlimited)

Additional Laser Caution
B
Transistors Q1103 and Q1104 in PCB drive the laser diodes for DVD and CD
respectively. When Q1103 or Q1104 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.
C
Replaced only with the same or equivalent type recommended by the manufacture.
Discord used batteries according to the manufacture's instructions.

D

E

F

AVH-P2300DVD/XNUC
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[Important Check Points for Good Servicing]
A 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
B 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.
C
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
D 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.

3. Lubricants, Glues, and Replacement parts
E
Use grease and adhesives that are equal to the specified substance.
Make sure the proper amount is applied.

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.

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.
F

AVH-P2300DVD/XNUC
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CONTENTS
SAFETY INFORMATION .....................................................................................................................................2
1. SERVICE PRECAUTIONS................................................................................................................................6
1.1 SERVICE PRECAUTIONS .........................................................................................................................6 A
1.2 NOTES ON SOLDERING...........................................................................................................................7
2. SPECIFICATIONS.............................................................................................................................................8
2.1 SPECIFICATIONS ......................................................................................................................................8
2.2 DISC/CONTENT FORMAT....................................................................................................................... 11
2.3 PANEL FACILITIES .................................................................................................................................. 11
2.4 CONNECTION DIAGRAM........................................................................................................................13
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 B
4.1 OVERALL CONNECTION DIAGRAM ......................................................................................................20
4.2 BLOCK DIAGRAM....................................................................................................................................22
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.................................................................................................................................61
5.5 CONNECTOR FUNCTION DESCRIPTION .............................................................................................65
6. SERVICE MODE.............................................................................................................................................66
6.1 MONITOR TEST MODE...........................................................................................................................66
6.2 DVD TEST MODE ....................................................................................................................................76
C
7. DISASSEMBLY ...............................................................................................................................................80
8. EACH SETTING AND ADJUSTMENT............................................................................................................88
8.1 DVD ADJUSTMENT .................................................................................................................................88
8.2 MOTHER PCB ADJUSTMENT.................................................................................................................96
8.3 MONITOR PCB ADJUSTMENT ...............................................................................................................98
8.4 PCL OUTPUT CONFIRMATION ............................................................................................................100
9. EXPLODED VIEWS AND PARTS LIST ........................................................................................................102
9.1 PACKING................................................................................................................................................102
9.2 EXTERIOR (1) ........................................................................................................................................104
9.3 EXTERIOR (2) ........................................................................................................................................106
9.4 EXTERIOR (3) ........................................................................................................................................108
9.5 DVD MECHANISM MODULE................................................................................................................. 110 D
10. SCHEMATIC DIAGRAM.............................................................................................................................. 114
10.1 MOTHER PCB (ANALOG PART) ......................................................................................................... 114
10.2 MOTHER PCB (SYSTEM PART) (GUIDE PAGE)................................................................................ 116
10.3 MOTHER PCB (POWER SUPPLY PART)............................................................................................122
10.4 MOTHER PCB (IN/OUT PART) ............................................................................................................124
10.5 INTERFACE PCB .................................................................................................................................126
10.6 DVD CORE UNIT (GUIDE PAGE)........................................................................................................128
10.7 CONNECT PCB....................................................................................................................................134
10.8 KEYBOARD PCB .................................................................................................................................136
10.9 MONITOR PCB (GUIDE PAGE)...........................................................................................................138
10.10 WAVEFORMS.....................................................................................................................................144
11. PCB CONNECTION DIAGRAM ..................................................................................................................146 E
11.1 MOTHER PCB ......................................................................................................................................146
11.2 INTERFACE PCB .................................................................................................................................150
11.3 DVD CORE UNIT..................................................................................................................................152
11.4 CONNECT PCB....................................................................................................................................154
11.5 KEYBOARD PCB..................................................................................................................................156
11.6 MONITOR PCB.....................................................................................................................................158
12. ELECTRICAL PARTS LIST.........................................................................................................................162

F

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1. SERVICE PRECAUTIONS
1.1 SERVICE PRECAUTIONS
A

1. 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.
2. Be careful in handling ICs. Some ICs such as MOS type are so fragile that they can be damaged by electrostatic
induction.
3. 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.
4. To protect the pickup unit from electrostatic discharge during servicing, take an appropriate treatment
(shorting-solder) by referring to "the DISASSEMBLY" .
5. After replacing the pickup unit, be sure to skew adjustment.
B
6. During disassembly, be sure to turn the power off since an internal IC might be destroyed when a connector
is plugged or unplugged.
7. Countermeasures to user complaints on iPhone/iPod touch lip synchronization
When a video is replayed, the video and audio may be out of synchronization depending on the connected
iPod or iPhone.
If it is annoying, perform the following operation.
However, this operation will slightly deteriorate the sound quality of the iPod source.
Also, it will disable the ASR function when the iPod source is used.

[Default]
Audio digital mode

C [Switching procedure]
Press MODE and EJECT and turn on Accessory simultaneously

The above switches the "Audio digital mode" to the "Audio analog mode".
When the mode is switching, the BEEP1 sound will be heard.

[Supplement]