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ORDER NO.
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 Allexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION 2001
c
RRV2423
DVR-A03
1. SAFETY INFORMATION ....................................... 2
2. EXPLODED VIEWS AND PARTS LIST ................. 4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
8
4. PCB CONNECTION DIAGRAM ........................... 33
5. PCB PARTS LIST ................................................ 38
6. ADJUSTMENT ..................................................... 41
CONTENTS
7. GENERAL INFORMATION .................................. 52
7.1 DIAGNOSIS ................................................... 52
7.1 DISASSEMBLY ........................................ 52
7.2 PARTS ........................................................... 55
7.2.1 IC .......................................................... 55
8. PANEL FACILITIES AND SPECIFICATIONS ....... 81
T ­ ZZY APR. 2001 Printed in Japan
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
DVD-R/RW CD-R/RW WRITER
Remarks
Type
Model
DVR-A03
Power Requirement
KB
O
DC Power supply from other system
NECESSARY INFORMATION FOR DHHS RULES MARKED ON THE TOP
COVER BELOW:
DANGER ­ VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN.
AVOID DIRECT EXPOSURE TO BEAM.
READ/WRITE
PHONES
DISC


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DVR-A03
2
1. SAFETY INFORMATION
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
VARO!
AVATTAESSA
JA
SUOJALUKITUS
OHITETTAESSA
OLET
ALTTIINA
NÄKYMÄTTÖMÄLLE
LASERSÄTEIYLLE.
ÄLÄ KATSO SÄTEESEEN.
ADVARSEL :
USYNLIG LASERSTRÅLING VED ÅBNING
NÅR SIKKERHED SAFBRYDERE ER UDE AF
FUNKTION.
UNDGÅ
UDSÆTTELSE
FOR
STRÅLING.
VARNING!
OSYNLIG LASERSTRÅLNING NÄR DENNA
DEL
ÄR
ÖPPNAD
OCH
SPÄRREN
ÄR URKOPPLAD. BETRAKTA EJ STRÅLEN.
WARNING!
DEVICE INCLUDES LASER DIODE WHICH
EMITS INVISIBLE INFRARED RADIATION
WHICH IS DANGEROUS TO EYES. THERE IS
A WARNING SIGN ACCORDING TO PICTURE
1 INSIDE THE DEVICE CLOSE TO THE LASER
DIODE.
IMPORTANT
THIS PIONNER APPARATUS CONTAINS
LASER OF CLASS 1.
SERVICING OPERATION OF THE APPARATUS
SHOULD BE DONE BY A SPECIALLY
INSTRUCTED PERSON.
LASER
kuva 1
Lasersateilyn
varoitusmerkki
LASER
Picture 1
Warning sign for
laser radiation
LASER DIODE CHARACTERISTICS
MAXIMUM OUTPUT POWER : 35 mw
WAVELENGTH : 658 nm


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DVR-A03
3
1. The ON/OFF(ON:low level,OFF:high level) status of the
CLAMP signals for detcting the loading state are detected
by the drive CPUs, and the design prevents laser diode
oscillation when the CLAMP signal turns OFF.
In normal operation, if no disc is clamped, the laser diode
oscillation is disabled.
However, the interlock does not always operate in the test
mode.
*
2. When the cover is opened, close viewing of the objective
lens with the naked eye will cause exposure to a Class 3A
laser beam.
Additional Laser Caution
* Refer to pages 43.
7LABEL CHECK
DRW2020
DRW2069


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4
DVR-A03
2.1 PACKING
2. EXPLODED VIEWS AND PARTS LIST
NOTES:
· Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
· The mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
· Screws adjacent to mark on the product are used for disassembly.
1
2
7
6
5
10
8
8
3
3
4
9
x5
10
· PACKING PARTS LIST
Mark No.
Description
Part No.
1
Short-circuit Socket
DKX1042
2
Operating Instructions
DRC1159
(English/ French/ German/ Italian/
Dutch/ Spanish/ Japanese)
3
Pad
DHA1502
4
Packing Case
DHG2073
5
Polyethylene Bag
DHL1089
6
Push Rod
DEX1008
7
Audio Cable
DKP3369
NSP
8
Polyethylene Bag
Z21-018
(235
×320×0.03)
9
Master Carton (A03)
DHG2149
10
Mounting Screw
AMZ30P060FMC


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5
DVR-A03
1
DVR ATAPI MAIN Assy
DWX2147
2
Front Bezel R3
DAH1977
3
Function Button R3
DAC1966
4
Lens
DAC1855
5
Front Door R3Z
DAH2016
6
Door Spring
DBH1477
7
Shield Plate
DNE1398
8
Frame L
DNB1084
9
Frame R
DNB1085
NSP
10
Label
DRW2086
11
Floating Rubber
DEB1466
12
Float Screw
DBA1148
13
Clamper
DNK3829
14
Clamper Yoke
DNH2467
15
Upper Clamper
DNK3830
16
Clamper Holder
DNC1548
17
Bonnet
DNC1550
NSP
18
Model Label
DRW2020
19
· · · · ·
20
Sheet
DEB1473
21
Base Chassis
DNC1549
22
Screw
BMZ26P050FMC
23
Screw
PMA26P040FMC
24
Screw
BPZ26P060FZK
25
Screw
DBA1154
26
Air Packing
DEB1474
27
Air Cushion
DEB1488
28
Spacer
DEB1483
29
Plate
DNK3839
30
Screw
DBA1159
NSP
31
Label
DRW2053
32
65 Label
ARW7050
33
Caution Label
DRW2069
34
Sheet
DEC2421
35
Stick Finger
DNB1092
A
A
B
B
C
C
D
D
E
E
F
F
30
31
30
17
22
22
18
34
10
29
28
14
13
8
11
25
7
5
2
3
12
11
20
9
1
21
23
23
27
4
6
12
15
24
16
33
24
35
32
26
Refer to "2.3 EXTERIOR(2/2) SECTION"
A
· EXTERIOR (1/2) SECTION PARTS LIST
Mark No.
Description
Part No.
Mark No.
Description
Part No.
2.2 EXTERIOR (1/2) SECTION