Pioneer MJ-L5 User manual

ORDER NO.
PIONEER ELECTRONIC 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 ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Wheelock Place, Singapore 238880
PIONEER ELECTRONIC CORPORATION 1998
c
RRV1986
MJ-L5
1. SAFETY INFORMATION ...................................... 2
2. EXPLODED VIEWS AND PARTS LIST................ 3
3. SCHEMATIC DIAGRAM ..................................... 14
4. PCB CONNECTION DIAGRAM.......................... 32
5. PCB PARTS LIST ............................................... 44
6. ADJUSTMENT .................................................... 49
CONTENTS 7. GENERAL INFORMATION ................................ 59
7.1 IC ................................................................. 59
7.2 DIAGNOSIS................................................. 75
7.3 DISASSEMBLY ........................................... 77
7.4 BLOCK DIAGRAM....................................... 82
8. PANEL FACILITIES AND SPECIFICATIONS.... 84
T – IZY AUG. 1998 Printed in Japan
SP-L5
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
SURROUND PROCESSOR
•This products is a system component. It combined the following components.
MINIDISC RECORDER.................... MJ-L5
SURROUND PROCESSOR............. SP-L5
•This products is a system component.
For the system composition, refer to the service manual RRV1997 for XC-L5.
•This product does not operate normally by itself. Please connect it to the STEREO CD RECEIVER XC-L5,
for adjustment and operation inspection. Otherwise damage may result.
DELAY
TIME SFC
MODE
MODE SFC
ON/OFF
Ÿ
Ÿ
DOLBYSURROUND
P R O • L O G I C
MINIDISC
ASES
7
0¶ 6
¢4
¡
•
+
–
•
1
MINIDISC RECORDER
Type Model Power Requirement Remarks
MJ-L5 SP-L5
MYXK AC220-230V
NVXK AC230V

MJ-L5, SP-L5
2
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
Laser pickup assy
The output power at the objective lens of this assy is 0.73 mW.
Control method of the current through a laser diode.
The resistor R105 on the MD CORE MAIN UNIT (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
LABEL CHECK ( for MJ-L5/MYXK and NVXK only )
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
∗Refer to page 50.
MJ-L5/MYXK
MJ-L5/NVXK
Printed on the Rear Panel

3
MJ-L5, SP-L5
1
2(1/2)
3(1/2)
3(2/2)
4
5
810
14 12
11
13 6
7
15
9
2(2/2)
NVXK only
NVXK only
MYXK only
2.1 MINIDISC RECORDER (MJ-L5)
2.1.1 PACKING (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.
(2) CONTRAST TABLE
MJ-L5/MYXK and MJ-L5/NVXK are constructed the same except for the following :
1 Packing Case See Contrast table (2)
2 Pad F AHA7219
3 Pad R AHA7220
4 Sheet (750×600×0.5) Z23-007
5 Sub Packing See Contrast table (2)
6 Power Cord See Contrast table (2)
7 Optical Fiber Cable RKX1031
8 Power Cord See Contrast table (2)
9 Fuse (T5A) See Contrast table (2)
10 Polyethylene Bag Z21-038
(0.03×230×340)
11 Operating Instructions See Contrast table (2)
(English/French/German/Italian)
12 Operating Instructions See Contrast table (2)
(English)
13 Operating Instructions See Contrast table (2)
(Dutch/Swedish/Spanish/Portuguese)
NSP 14 Warranty Card ARY7022
NSP 15 Serial Paper RRW-168
Mark No. Symbol and Description Part No. Remarks
MJ-L5/MYXK MJ-L5/NVXK
1 Packing Case AHD7630 AHD7631
5 Sub Packing Not used AHD7618
6 Power Cord ADG7010 Not used
8 Power Cord Not used ADG7009
9 Fuse (T5A) Not used AEK7001
11 Operating Instructions (English/French/German/Italian) ARE7173 Not used
12 Operating Instructions (English) Not used ARB7154
13 Operating Instructions (Dutch/Swedish/Spanish/Portuguese) ARE7174 Not used

4
MJ-L5, SP-L5
Refer to
"2.1.3 TOP PANEL ASSY".
25
15
14
14
13
13
13
11
10
8
9
25 16
13
12
25
21
25
24
24
27
6
25
5
226
26
26
17
18
34
1
25
16
19
25
20
16
7
Refer to
"2.1.4 MD MECHANISM ASSY".
23
22
26
2.1.2 EXTERIOR

5
MJ-L5, SP-L5
(1) EXTERIOR PARTS LIST
Mark No. Description Part No.
1 MD MAIN Unit AWU7106
2 MD TRANS Unit AWU7107
3 MD REG1 Unit AWU7154
4 MD REG2 Unit AWU7155
5 Fuse (FU1 : T200mA/250V) AEK1047
6 Power Transformer (T1) ATT7031
NSP 7 MD MECHANISM Assy AXA7069
8 Bottom Base AMA7006
9 Leg AEB7090
NSP 10 Bottom Plate ANF7010
11 MD Base ANG7191
12 30P F•F•C/30V ADD7097
13 Float Rubber REB1328
14 Float Screw RBA1133
15 MD Shield ANG7192
Mark No. Description Part No.
16 Angle ANG7189
17 Rear Panel See Contrast table (2)
18 Cord With Plug (J1) ADE7026
19 Shield Barrier AEC7164
20 Rivet VEC1178
21 Earth Plate ANG7168
22 Bonnet AMA7007
NSP 23 Caution Label See Contrast table (2)
24 Screw BPZ30P060FZK
25 Screw BBZ30P060FMC
26 Screw VPZ30P080FZK
27 Screw BBZ40P060FMC
(2) CONTRAST TABLE
MJ-L5/MYXK and MJ-L5/NVXK are constructed the same except for the following :
Mark No. Symbol and Description Part No. Remarks
MJ-L5/MYXK MJ-L5/NVXK
17 Rear Panel ANC7675 ANC7676
NSP 23 Caution Label ARW1047 ARW1050

6
MJ-L5, SP-L5
9
12
8(1/2)
8(2/2)
2
7
5
6
4
3
10
1
11
12
12
2.1.3 TOP PANEL ASSY
•TOP PANEL ASSY PARTS LIST
Mark No. Description Part No.
1 MD KEYR Unit AWU7108
2 MD KEYL Unit AWU7109
3 Top Panel AMB7515
4 Sub Panel MD AAP7049
5 MD Flap AAN7186
6 MD Spring ABH7154
7 Flap Plate AAT7003
8 Button X Assy AWL7034
9 Sub Panel AAP7048
NSP 10 Top Plate ANK7042
11 Rivet VEC1178
12 Screw VPZ30P080FZK

7
MJ-L5, SP-L5
2.1.4 MD MECHANISM ASSY
49
48
40
22
42
38 43
40
33
44
31
28
32
34
40
11
5
10
17
7
6
49
37
19
21 20
18
37
16
26
15
13
14
37
12
53
52
51
A
E
E
F
F
G
G
H
A
B
B
C
C
D
D
37
8
40
24
25
39
27
41 35
36
29
3946
23
30
45
2
3
50 47
37
CN103
CN101
CN102
CN105
1
H

8
MJ-L5, SP-L5
•MD MECHANISM ASSY PARTS LIST
Mark No. Description Part No.
1 MD CORE MAIN Unit RWZ4326
2 MD CORE SW Unit RWZ4272
3 Lead Card 7P RDD1399
4 Lead Wire RKP1814
5 Lever Spring RBH1463
6 Clamp Spring 1 RBK1074
7 Clamp Spring 2 RBK1075
8 Loading Belt REB1329
9 Lock Plate RNE1949
10 Loading Base RNK2312
11 Under Slider RNK2314
12 Gear Pulley RNK2316
13 Drive Gear RNK2317
14 Clutch Gear RNK2318
15 Flip Disk RNK2319
16 SW Lever RNK2320
17 Shutter Assy RXA1774
NSP 18 Upper Slider Assy RXA1775
19 Eject Spring RBH1461
20 Upper Slider RNK2313
21 Carrier RNK2315
22 Screw RBA1129
23 Spindle Spring RBH1460
24 Lifter SP RBH1462
25 Screw Guide RBK1072
26 S. H. Spring RBK1073
27 Guide Shaft RLA1310
28 Lead Screw RLA1311
29 Shield Case RNE1950
30 Reference Plate RNK2306
31 S. Holder RNK2307
32 Worm Wheel RNK2309
33 Hook RNK2310
34 Head Lifter RNK2311
35 MD Head RPB1062
36 MD Pickup RWY1018
37 Screw IPZ20P080FMC
38 Screw JFZ17P020FZK
39 Screw JGZ14P020FMC
40 Screw JGZ17P030FMC
41 Screw JGZ17P040FZK
42 Screw PMB20P040FMC
43 Servo Base Assy REA1283
NSP 44 Clamp Magnet RMF1002
NSP 45 Servo Base RNE1946
NSP 46 Disc Table RNK2305
NSP 47 Spindle Motor RXM1091
48 Carriage Motor Assy REA1284
49 Worm RNK2308
NSP 50 Carriage Motor RXM1090
51 Loading Motor Assy REA1285
52 DC Motor /0.75W PXM1010
53 CA Pulley (1) VNL1197
Mark No. Description Part No.

9
MJ-L5, SP-L5
12
11
6
NVXK only
MYXK only
5
8
9
NVXK only
1
2(1/2)
3(1/2)
3(2/2)
4
10
14 13 16
7
15
2(2/2)
2.2 SURROUND PROCESSOR (SP-L5)
2.2.1 PACKING (1) PACKING PARTS LIST
Mark No. Description Part No.
1 Packing Case See Contrast table (2)
2 Pad F AHA7219
3 Pad R AHA7220
4 Sheet (750×600×0.5) Z23-007
5 Sub Packing See Contrast table (2)
6 Power Cord See Contrast table (2)
7 Remote Control Unit AXD7171
(CU-SP005)
8 Power Cord See Contrast table (2)
9 Fuse (T5A) See Contrast table (2)
10 Polyethylene Bag Z21-038
(0.03×230×340)
11 Operating Instructions See Contrast table (2)
(English/French/German/Italian/
Dutch/Swedish/Spanish/Portuguese)
12 Operating Instructions See Contrast table (2)
(English)
13 Battery Cover AZA7050
NSP 14 Warranty Card ARY7022
NSP 15 Serial Paper RRW-168
NSP 16 Dry Cell Battery (R03,AAA) PEM1004
(2) CONTRAST TABLE
SP-L5/MYXK and SP-L5/NVXK are constructed the same except for the following :
Mark No. Symbol and Description Part No. Remarks
SP-L5/MYXK SP-L5/NVXK
1 Packing Case AHD7632 AHD7633
5 Sub Packing Not used AHD7618
6 Power Cord ADG7010 Not used
8 Power Cord Not used ADG7009
9 Fuse (T5A) Not used AEK7001
11 Operating Instructions ARE7175 Not used
(English/French/German/Italian/Dutch/Swedish/
Spanish/Portuguese)
12 Operating Instructions (English) Not used ARB7155

10
MJ-L5, SP-L5
Refer to
"2.2.3 TOP PANEL ASSY".
17
16
21
21
20
10
8
919
22
20
20
23
7
15
24 13
24
24
14
24
45
3
2
21
12
6
21
21
21
11
1
18
24
2.2.2 EXTERIOR

11
MJ-L5, SP-L5
(1) EXTERIOR PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 PRO MAIN Unit AWU7101
2 PRO AMP Unit AWU7102
3 PRO TRANS Unit AWU7103
4 PRO AUX Unit AWU7146
5 Fuse (FU1 : T800mA/250V) AEK1053
6 Power Transformer (T) ATS7220
NSP 7 Heat Sink ANH7089
8 Bottom Base AMA7006
9 Leg AEB7090
NSP 10 Bottom Plate ANF7010
11 Angle ANG7189
12 Cord Clamper RNH-184
13 Rear Panel See Contrast table (2)
14 Rear Case AMR7207
15 Cord With Plug (J) ADE7026
16 Top Barrier AEC7151
17 Rivet VEC1178
18 Bonnet AMA7007
19 Name Label ARW7043
20 Screw BPZ30P060FZK
21 Screw BBZ30P060FMC
22 Screw BBZ40P060FMC
23 Screw BBZ30P140FMC
24 Screw VPZ30P080FZK
(2) CONTRAST TABLE
SP-L5/MYXK and SP-L5/NVXK are constructed the same except for the following :
Mark No. Symbol and Description Part No. Remarks
SP-L5/MYXK SP-L5/NVXK
13 Rear Panel ANC7677 ANC7678

12
MJ-L5, SP-L5
5678
3
11
10
4
1
2
9(3/3)
9(2/3)
9(1/3)
11
11
12
2.2.3 TOP PANEL ASSY
•TOP PANEL ASSY PARTS LIST
Mark No. Description Part No.
1 PRO KEYR Unit AWU7104
2 PRO KEYL Unit AWU7105
3 PRO IND Unit AWU7145
4 Top Panel AMB7516
5 Sub Panel PR AAP7050
6 Lens D AAX7640
7 Illumination Filter VEC1950
8 Illumination Holder VNK4098
9 Button X Assy AWL7035
NSP 10 Top Plate ANK7048
11 Screw VPZ30P080FZK
12 Rivet VEC1178

13
MJ-L5, SP-L5

MJ-L5, SP-L5
14
A
B
C
D
1234
1234
3. SCHEMATIC DIAGRAM
3.1 MINIDISC RECORDER (MJ-L5)
3.1.1 OVERALL CONNECTION DIAGRAM
MD MAIN UNIT
(AWU7106)
MD TRANS UNIT
(AWU7107)
D
MD REG2
UNIT
(AWU7155)
MD REG1
UNIT
(AWU7154)
E
F
MD KEYR UNIT
(AWU7108)
G
MD KEYL UNIT
(AWU7109)
H
C
C
1/2 -
C
2/2
(
)
AC POWER CORD
MYXK: ADG7010
AC220 - 230V
NVXK: ADG7009
AC230V

MJ-L5, SP-L5
15
A
B
C
D
5678
5678
MD MECHANISM ASSY
(RXA1773)
MD CORE MAIN
UNIT
(RWZ4326)
A
MD CORE SW
UNIT
(RWZ4272)
B
CN104
RKN1039
DECK (CT-L5)
STEREO CD RECEIVER (XC-L5)
or
SURROUND PROCESSOR (SP-L5)
INTERFACE
IC4240
(BU4066BCF)
JA4601
GP1F32R
IC4171
(TC74HCT08AF)
REC AMP
IC4202
(NJM4558MD)
BUFFERALC
IC4201
(NJM4558MD)
BUFFER
IC4250
(NJM4558MD)
AD/DA
CONVERTER
OUTPUT
SEL.
IC4301
(AK4520A) Q4203
Note :When ordering service parts, be sure to refer to "EXPLODEDVIEWS and PARTS LIST" or "PCB PARTS LIST".

MJ-L5, SP-L5
16
A
B
C
D
1234
1234
MD CORE MAIN
UNIT
(RWZ4326)
A
MD CORE SW
UNIT
(RWZ4272)
B
LOADING MOTOR
SLED MOTOR
SPINDLE MOTOR
YELLOW
BLACK
ORANGE
BLUE
BLACK
RED
INSIDE SW
A : DISC PROTECT
B : DISC MEDIA DETECT
PICKUP
1
23
1011
8
9
AB
3.1.2 MD CORE MAIN and MD CORE SW UNITS

MJ-L5, SP-L5
17
A
B
C
D
5678
5678
(INSIDE)
C
CN4101
1/2
YB
0.01
R291–R293 : 47k
: PLAYBACK SIGNAL
: REC SIGNAL
: OUTPUT DIGITAL AUDIO SIGNAL
: INPUT DIGITAL AUDIO SIGNAL
: RF SIGNAL
SIGNAL ROUTE
6
5
7
4
AA
¶1– -are waveform numbers on pages 24 and 25.

MJ-L5, SP-L5
18
A
B
C
D
1234
1234
C 1/2
:
C 1/2
MD MAIN UNIT(1/2)
(AWU7106)
C
2/2
A
CN104
4.9
4.9
4.9
4.9
3.2
5
(D)
(D)
(D)
(D)
(D)
(D)
(D)
(D)
(D)
5
–4.4
4.1
3
3.1.3 MD MAIN (1/2), MD TRANS, MD REG1 and MD REG2 UNITS

MJ-L5, SP-L5
19
A
B
C
D
5678
5678
C 1/2
DEF
POWER TRANSFORMER
FU1:
AEK1047
MD REG1
UNIT
(AWU7154)
MD REG2
UNIT
(AWU7155)
E
MD TRANS UNIT
(AWU7107)
D
F
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE.
REPLACE WITH SAME TYPE NO. 491.630 MFD. BY
LITTELFUSE INC. FOR IC4013(AEK7006).
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE.
REPLACE WITH SAME TYPE NO. 491.500 MFD. BY
LITTELFUSE INC. FOR IC4014(AEK7005).
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE.
REPLACE WITH SAME TYPE NO. 491001 MFD. BY
LITTELFUSE INC. FOR IC4052(AEK7009).
DECK (CT-L5)
STEREO CD RECEIVER (XC-L5)
or
SURROUND PROCESSOR (SP-L5)
4.9
–4.4
4.9
4.9
5 5
13.3
: PLAYBACK SIGNAL ROUTE
: RECORDING SIGNAL ROUTE
: DIGITAL AUDIO SIGNAL ROUTE
(D)

MJ-L5, SP-L5
20
A
B
C
D
1234
1234
C 2/2
MD MAIN UNIT (2/2)
(AWU7106)
MD KEYL
UNIT
(AWU7109)
H
MD KEYR
UNIT
(AWU7108)
G
C 2/2
GH
3.1.4 MD MAIN (2/2) , MD KEYR and MD KEYL UNITS