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 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION 2000
c
MJ-NS1
RRV2363
1. SAFETY INFORMATION ........................................... 2
2. EXPLODED VIEWS AND PARTS LIST ..................... 3
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ..... 8
4. PCB CONNECTION DIAGRAM ............................... 21
5. PCB PARTS LIST .................................................... 26
6. ADJUSTMENT ......................................................... 29
CONTENTS
7. GENERAL INFORMATION .................................. 37
7.1 DIAGNOSIS ................................................... 37
7.1.1 SINGLE OPERATION METHOD ............ 37
7.1.2 POWER ON SEQUENCE ....................... 38
7.1.3 DISASSEMBLY ....................................... 40
7.2 IC ................................................................... 43
8. PANEL FACILITIES AND SPECIFICATIONS ...... 46
T ZZV AUG. 2000 Printed in Japan
MINIDISC RECORDER
¶ This product is a system(s) component.
This product does not function properly independently ; to avoid malfunctions, be
sure to connect it to the prescribed system component(s), otherwise damage may
result.
¶ Please connect it to the STEREO CD TUNER XC-NS1 and STEREO POWER AMPLI-
FIER M-NS1 for adjustment and operation inspection.
Component
Model
Service manual
Remarks
STEREO CD TUNER
XC-NS1
RRV2348 (RRV2341)
STEREO POWER AMPLIFIER
M-NS1
RRV2349 (RRV2321)
SPEAKER SYSTEM
S-NS1-LRW
RRV2371
Except YPWXJ type
MINIDISC RECORDER
MJ-NS1
RRV2363
This manual.
Type
Model
Power Requirement
Remarks
MJ-NS1
ZPWXJ
DC power supplied from other system component
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
2
MJ-NS1
1. SAFETY INFORMATION
Control method of the current through a laser diode.
The resistor R105 on the CORE MAIN UNIT ASSY (For MD
mechanism assy) are for the limiting of current through a laser
diode.
Control method of the laser output power
The laser pickup assy provide the photo-diodes and APC (Auto
Power Control) circuit.
The photo-diode detect output of the laser diode then IC104 control
the APC circuit according to the signal voltage of the photo-diode via
IC101.
The Variable resistancer on the FPC in the Laser pickup assy can
be adjusted the output level of Laser diode to fix the rated output
level.
Laser Interlock Switch
The loading position detect switch S101 is set to " LOAD ON " (ON:
low level, OFF: high level) position, IC104 get the " LOAD " signal,
and hand the laser " LDON " signal to No. 9 terminal (LDON) of the
Laser pickup assy.
Then a laser diode can be lighted exept when the level of signal
"LOAD " is low.
Additional Laser 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.
Refer to page 30.
IMPORTANT
THIS PIONEER APPARATUS CONTAINS
LASER OF CLASS 1.
SERVICING OPERATION OF THE APPARATUS
SHOULD BE DONE BY A SPECIALLY
INSTRUTED PERSON.
LASER DIODE CHARACTERISTICS
MAXIMUM OUTPUT POWER: 32 mW
WAVELENGTH: 785 nm
LABEL CHECK
3
MJ-NS1
8
3
6
2
1
7
12
11
13(2/2)
13(1/2)
10
14
2.1 PACKING
1
Optical Digital Cable
RKX1031
2
Stand A
AXG7096
3
Stand B
AXG7097
4
· · · · · · ·
5
· · · · · · ·
6
Spacer MD ,TC
AHB7038
7
Operating Instructions
ARE7266
(English/Chinese)
NSP
8
Warranty Card
ARY7027
9
· · · · · · ·
NSP
10
Polyethylene Bag
Z21-038
(230
×340×0.03)
11
Sheet (550
×550×0.5)
Z23-026
12
Front Pad M (PLS)
AHA7295
13
Rear Pad M (PLS)
AHA7296
14
Packing Case
AHD7901
(1) PACKING PARTS LIST
Mark No.
Description
Part No.
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.
4
MJ-NS1
C
B
A
A
B
C
D
D
E
E
F
F
25
16
28
39
38
36
38
37
38
38
1
38
24
38
10
38
33
9
15
35
40
15
24
11
38
" Refer to
2.3 MD Mechanism"
38
6
37
7
20
21
21
21
20
37
13
37
14
30
26
18
12
38
38
38
4
5
17
29
34
32
23
31
31
38
27
22(1/2)
2
22(2/2)
27
3
19
37
8
21
38
E
D
F
C
A
B
2.2 EXTERIOR
5
MJ-NS1
1
MAIN UNIT
AWU7607
NSP
2
RELAY UNIT
AWU7576
NSP
3
KEY L UNIT
AWU7577
NSP
4
KEY R UNIT
AWU7652
NSP
5
BLUE UNIT
AWU7653
NSP
6
IC UNIT
AWU7654
NSP
7
MD Mechanism
AXA7087
8
Lead Card 30P (J4101)
ADD7280
(MAIN CN4101
MD CORE CN104)
9
Cord with Plug (J4103)
ADE7065
(System Cable to CD Receiver)
NSP
10
Bottom Chassis MDTC
ANA7108
11
Sub Chassis (MTL)
AND7036
12
Disc Guard (MTL)
ANG7319
13
Shield Case (FE)
ANK7077
14
MD Spring
ABH7189
15
Leg
AEB7090
16
FL Holder (PLS)
AMR7312
17
Illumination Holder
AMR7317
18
MD Flap Holder (PLS)
AMR7318
19
MD Cam (PLS)
AMR7319
20
Float Screw (FE)
RBA1133
21
Float Rubber (Rubber)
REB1328
22
Button MD (PLS)
AAD7582
23
Display Window MD (PLS)
AAK7763
24
Rear Cap MD TC (PLS)
AAK7772
25
FL window MD TC (PLS)
AAK7793
26
Door NS (PLS)
AAK7807
27
Lens MD TC (PLS)
AAK7838
28
FL Cover
AAK7841
29
Illuminate Lens (PLS)
AAK7842
30
Sub Panel MD (PLS)
AAP7069
31
Side Line (PLS)
AAP7074
32
Screw (Steel)
ABA7062
33
Bottom Base CDMD (PLS)
AMA7017
34
Top Panel MD (PLS)
AMB7700
NSP
35
Name Label (PAP) MD/ZP
AAL7254
36
Connector Label
ARW7110
37
Screw
BBZ30P080FMC
38
Screw
BBZ30P080FZK
39
Screw
VBZ30P100FZK
40
Caution Label
PRW1018
EXTERIOR PARTS LIST
Mark No.
Description
Part No.