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PIONEER CORPORATION
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS SERVICE 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
C PIONEER CORPORATION 2001
K-ZZY. JUNE 2001 Printed in Japan
ORDER NO.
CRT2708
DVD NAVIGATION UNIT
AVIC-8DVD
EW
Service
Manual
- This service manual should be used together with the following manual(s):
Model No.
Order No.
Mech. Module Remarks
CX-954
CRT2670
MS2
DVD Mech. Module:Circuit Description, Mech.Description, Disassembly
- This product has the unit part numbers as below.
Unit Part No.
Description
CPN1745
Main Assy
*) The unit part numbers listed above are not for the service components.
- For your inspection, the following extention cords are supplied. Use them if necessary.
part to use
Part No.
Main PCB (CN3251) <--> DVD Core Unit R (CN1701)
GGD1170
Main PCB (CN3254) <--> CC Unit (CN302)
GGD1264
Main PCB (CN3901) <--> Interface PCB (CN5004)
GGD1171
Main PCB (CN552) <--> GPS Unit (CN461)
GGD1265
CC Unit (CN2) <--> DVD Core Unit R (CN1401)
GGD1268


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AVIC-8DVD
1. SAFETY INFORMATION
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.
1. Safety Precautions for those who Service this Unit.
· Follow the adjustment steps (see pages 115 through 119)in the service manual when servicing this unit. 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 13cm from the focus lens must be kept.
2. During repair or tests, do not view laser beam for 10 seconds or longer.
CONTENTS
1. SAFETY INFORMATION ............................................2
2. EXPLODED VIEWS AND PARTS LIST .......................6
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...12
4. PCB CONNECTION DIAGRAM ................................82
5. ELECTRICAL PARTS LIST ........................................98
6. ADJUSTMENT........................................................114
7. GENERAL INFORMATION .....................................120
7.1 DIAGNOSIS ......................................................120
7.1.1 TEST MODE ............................................120
7.1.2 USING THE TEST MODE .......................136
7.1.3 DISASSEMBLY .......................................143
7.1.4 CONNECTOR FUNCTION DESCRIPTION .....146
7.2 IC ......................................................................147
7.3 EXPLANATION .................................................166
7.3.1 CIRCUIT DESCRIPTION..........................166
7.3.2 OPERATIONAL FLOW CHART ...............167
8. OPERATIONS AND SPECIFICATIONS...................168
- High voltage is generated in the inverter when the power is supplied to the system. To avoid an electric shock,
reconfirm that the power switch is set to OFF before starting operation.
- Check of installation direction when G-Sensor Unit was after repair.
Lock-screw
Lock-screw
Parallel
Parallel
Lever
Lever
Forward / Aft direction of vehicle
Forward / Aft direction
of vehicle
Front
Front
- DVD Player Service Precautions
1.
Never adjust the LD VR in the pickup unit to protect the pickup from electrical damages.
2. For pickup unit(service)(CXX1530) handling, please refer to"Disassembly"(see page 143).
During replacement, handling precautions shall be taken to prevent an electrostatic discharge(set the short switch
of the pickup unit to the SHORT side).
3. During disassembly, be sure to turn the power off since an internal IC might be destroyed when a connector is
plugged or unplugged.
4. Please adjusting the skew after changing the pickup unit(see page 118).


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AVIC-8DVD
2. The triangular label is attached to the mechanism
unit frame.
On the bottom of the player.
CAUTION :
VORSICHT :
ADVARSEL :
VARNING :
VARO!
:
VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN.
AVOID EXPOSURE TO BEAM.
SICHTBARE UND UNSICHTBARE LASERSTRAHLUNG, WENN
ABDECKUNG GEÖFFNET NICHT DEM STRAHL AUSSETZEN!
SYNLIG OG USYNLIG LASERSTRÅLING VED ÅBNING
UNDGÅ UDSÆTTELSE FOR STRÀLING.
SYNLIG OCH OSYNLIG LASERSTRÅLNING NÄR DENNA
DEL ÄR ÖPPNAD BETRAKTA EJ STRÅLEN.
AVATTAESSA ALTISTUT NÄKYVÄ JA NÄKYMÄTTÖMÄLLE
LASERSATEIL YLLE. ÄLÄ KATSO SÄTEESEN.
VRW1699
CLASS 1
LASER PRODUCT
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:640~660nm
CD:770~810nm
Maximum output:2.44mw(Emitting period :9sec.)
DVD:743mw(Emitting period : unlimited)
Additionla Laser Caution
Transistors Q1104 and Q1108 in PCB drive the laser diodes for DVD and CD
respectively. When Q1104 or Q1108 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.


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AVIC-8DVD
This warning is stated on the product or
in the operating instructions. When replac-
ing the lithium batteries, follow the note
below.
Dispose of the used battery promptly.
Keep away from children. Do not disas-
semble and do not dispose of in fire.
The battery used in this device may present
a fire or chemical hazard if mistreated. Do
not recharge, disassemble, heat above
100°C or incinerate. Replace only with the
same Part Number. Use of another battery
may present a risk of fire or explosion.
Note: The lithium battery installation po-
sition is shown in the exploded view
and the P.C. board pattern.
Denne advarsel or angivet på produktet
eller i brugsvejledningen. Ved udskiftning
af lithium batterierne følges nedenstående
anveisning.
Batterierne må kun udskiftes med batteri-
er af samme type og mærke.
Denna varning finns på apparaten eller i
bruksanvisningen. Följ nedanstående an-
visningar vid byte av litiumbatterier.
Batterierna får endast bytas ut mot litium-
batterier av samma typ och fabrikat.
VARNING
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en ek-
vivalent typ som rekommenderas av ap-
parattillverkaren. Kassera använt batteri
enligt fabrikantens instruktion.
ADVARSEL!
Lithiumbatteri -- Eksplosionsfare ved
fejlagtig håndtering. Udskiftning må kun
ske med batteri af samme fabrikat og
type. Levér det brugte batteri tilbage til
leverandøren.
WARNING!
Lithium batteries. Danger of explo-
sion. Replacement must be done by
qualified personnel and only by fol-
lowing the instructions given in the
service manual.


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AVIC-8DVD