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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 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION 2000
c
XR-MT3
RRV2343
T ­ IZK JULY 2000 Printed in Japan
STEREO CD RECEIVER
1. SAFETY INFORMATION ....................................... 2
2. EXPLODED VIEWS AND PARTS LIST ................. 4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ... 10
4. PCB CONNECTION DIAGRAM ........................... 22
5. PCB PARTS LIST ................................................ 32
6. ADJUSTMENT ..................................................... 37
CONTENTS
7. GENERAL INFORMATION ................................ 41
7.1 DIAGNOSIS .................................................. 41
7.1.1 TROUBLE SHOOTING ........................ 41
7.1.2 DISASSEMBLY/ASSEMBLY ................ 45
7.2 PARTS .......................................................... 53
7.2.1 IC .......................................................... 53
7.2.2 DISPLAY ............................................... 55
7.3 REMOTE CONTROL UNIT .......................... 56
8. PANEL FACILITIES AND SPECIFICATIONS .... 58
Type
Model
Power Requirement
The voltage can be converted by
XR-MT3
the following method.
KUCXCN
AC120V
­­­­­
MYXCN
AC220-230V
­­­­­
NVXCN
AC230V
­­­­­
DBDXCN
AC110-127V/220-230V/240V
With the voltage selector
DLXCN/NC
AC110-127V/220-230V/240V
With the voltage selector
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Component
Model
Service
Remarks
manual
STEREO CD RECEIVER SYSTEM
X-MT2000
RRV2342
KUCXCN
MYXCN,NVXCN
DBDXCN
DLXCN/NC
STEREO CD RECEIVER
XR-MT3
XR-MT3
XR-MT3
XR-MT3
RRV2343
This manual.
SPEAKER SYSTEM
S-MT3W
S-MT3H
S-MT3
S-MT3-N
RRV2344
¶ System Component Table


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2
XR-MT3
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
NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols
(fast operating fuse) and/or
(slow operating fuse) on PCB indicate that replacement parts must
be of identical designation.
REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible
(fusible de type rapide) et/ou
(fusible de type lent) sur CCI indiquent que les pièces
de remplacement doivent avoir la même désignation.
ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE APPLIANCE TO THE CUSTOMER.
2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appliance
have special safety related characteristics. These are
often not evident from visual inspection nor the protection
afforded by them necessarily can be obtained by using
replacement components rated for voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this Service Manual.
Electrical components having such features are identified
by marking with a
on the schematics and on the parts list
in this Service Manual.
The use of a substitute replacement component which does
not have the same safety characteristics as the PIONEER
recommended replacement one, shown in the parts list in
this Service Manual, may create shock, fire, or other hazards.
Product Safety is continuously under review and new
instructions are issued from time to time. For the latest
information, always consult the current PIONEER Service
Manual. A subscription to, or additional copies of, PIONEER
Service Manual may be obtained at a nominal charge from
PIONEER.
1. SAFETY PRECAUTIONS
The following check should be performed for the
continued protection of the customer and service
technician.
LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground (water
pipe, conduit, etc.) by connecting a leakage current tester
such as Simpson Model 229-2 or equivalent between the
earth ground and all exposed metal parts of the appliance
(input/output terminals, screwheads, metal overlays, control
shaft, etc.). Plug the AC line cord of the appliance directly
into a 120V AC 60Hz outlet and turn the AC power switch
on. Any current measured must not exceed 0.5mA.
(FOR USA MODEL ONLY)
Leakage
current
tester
Reading should
not be above
0.5mA
Device
under
test
Test all
exposed metal
surfaces
Also test with
plug reversed
(Using AC adapter
plug as required)
Earth
ground
AC Leakage Test


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3
XR-MT3
Additional Laser Caution
1. Laser Interlock Mechanism
The position of the switch for detecting loading state is
detected by the system microprocessor, and the design
prevents laser diode oscillation when the switch is pressed
physically.
Thus, the interlock will no longer function if the switch is released
physically and deliberatery.
Laser diode oscillation will continue, if pin 46 of TA2065F (IC2)
on the CD SERVO PCB ASSY is connected to GND, or else
the terminals of Q1 are shorted to each other (fault condition).
2. When the cover is opened, close viewing of the objective
lens with the naked eye will cause exposure to a Class 1
laser beam.
LASER DIODE CHARACTERISTICS
MAXIMUM OUTPUT POWER: 5 mW
WAVELENGTH: 760 - 800 nm
IMPORTANT
THIS PIONEER APPARATUS CONTAINS
LASER OF CLASS 1.
SERVICING OPERATION OF THE APPARATUS
SHOULD BE DONE BY A SPECIALLY
INSTRUCTED PERSON.
LABEL CHECK (For MYXCN and NVXCN Types)


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4
XR-MT3
2.1 EXTERIOR SECTION
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.
G
F
E
B
J
D
C
D
C
A
I
H
G
E
F
K
K
H
A
B
I
J
8
34
87
71
54
5
27
7
2
7
15
64
32
20
8
44
28
31
8
56
15
51
59
9
1
8
2
2
8
14
49
8
16
53
2
8
18(2/2)
6
15
57
50
62
62
2
68
95
15
6
2
4
8
16
48
35
37
8
47
12
8
58
77
9
8
75
74
46
13
8
76
19
16
9
73
80
45
79
81
82
17
60
8
41
10
40
85
52
33
Refer to section
"2.2 CD MECHA.
SECTION".
6
6
39
18(1/2)
26,61
29
8
8
16
36
70
69
89
65
84
44
93
22
66
72
55
91
92
94
21
67
24
42
43
23
8
78
90
25
38
88
63
E
A
G
F
B
E
C
D


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5
XR-MT3
(1) EXTERIOR SECTION PARTS LIST
Mark No.
Description
Part No.
1
AMP PCB Assy
AUD-PMT1E
2
Screw
BBZ30P060FMC
3
Screw
KBZ30P060FNI
4
Screw
BBZ30P140FMC
5
Screw
BBZ40P060FMC
6
Screw
BPZ20P050FMC
7
Screw
BPZ26P080FMC
8
Screw
BPZ30P100FNI
9
Screw
CBZ30P060FMC
10
CD SERVO PCB Assy
CD--PMT1E
11
· · · · · ·
12
DISPLAY PCB Assy
See Contrast table(2)
NSP
13
HP JACK PCB Assy
· · · · · ·
14
TERMINAL/JACK PCB Assy
JK--PMT1E
15
Screw
KBZ30P040FMC
16
Screw
KBZ30P060FNI
17
CD DOOR Assy MT
SUBPMT1DR01
18
POWER PCB Assy
See Contrast table(2)
19
S-Assy PMT1 FP01
See Contrast table(2)
19
S-Assy PMT1 FP02
See Contrast table(2)
20
TUNER PCB Assy
See Contrast table(2)
21
FFC Cable 16Pin
040160100101
22
FFC Cable 16Pin
040160260100
23
FFC Cable 17Pin
040170100100
24
FFC Cable 24Pin
040240200130
25
FFC Cable 30Pin
040300400100
26
Power TF EI35 120V
See Contrast table(2)
26
Power TF EI35 230V
See Contrast table(2)
26
Power TF EI35 11-2
See Contrast table(2)
27
Power TF EI66 120V
See Contrast table(2)
27
Power TF EI66 230V
See Contrast table(2)
27
Power TF EI66 11-2
See Contrast table(2)
28
Micro Fuse 251001
124010010002
29
Fuse #23901.6 (1.6A)
See Contrast table(2)
29
Fuse #21801.6 (1.6A)
See Contrast table(2)
30
Micro Fuse 251002
124020010002
31
Micro Fuse #25103.5
124035010000
32
PLA-ULP-6'06"-SP2NMG
See Contrast table(2)
32
PLA-VDE-6'06"-VDG
See Contrast table(2)
32
PLA-MOU-6'06"-BS6
See Contrast table(2)
32
PLA-JIS-6'06"-JIS
See Contrast table(2)
33
CD MECHA,CMCJ
153000117000
34
Top Panel
See Contrast table(2)
35
Direct Access Knob Lens
500PMT111000
36
Back Cover
See Contrast table(2)
37
Power Standby Lens
500PMT129000
38
Fuse Insulation Cap
500623200000
39
CD Base Adaptor R
503PMT125000
40
CD Base Adaptor L
503PMT126000
41
Servo PCB Bracket
505PMT114000
42
FL Bracket
505PMT134000
43
LED Bracket
505PMT135000
44
PCB Mounting Bracket
505PMT136000
45
Volume Knob
510PMT103001
46
Clock Control Knob Set
510PMT108001
47
Direct Access Knob Set
510PMT109010
48
Side Panel-L
600PMT117001
49
Side Panel-R
600PMT118001
NSP
50
Bottom Tray
600PMT121000
51
Transformer Bracket
605PMT122000
52
FCC Cable HLD
605PMT142000
53
Cable Holder
605PMT143000
54
Power Heat Sink
613PMT124000
55
Heat Sink
613PMT131000
56
CD Shield Plate
650PMT139000
57
CD Insulation Sheet
650PMT144000
58
Display Filter Plate
See Contrast table(2)
59
PC Sheet
650PMT149000
60
Transport Stopper PL
650PMT197010
61
Shielding Plate
650277225000
62
Rubber Foot
700PMT130000
63
Capacitor Boot
700PMT150000
64
Bushing
See Contrast table(2)
65
Cable/Plastic Tie
727000100000
66
65 Label
See Contrast table(2)
NSP
67
Trans. Stopper Label
809PMT194021
68
FCC Label
See Contrast table(2)
NSP
69
Serial No Barcode Label
See Contrast table(2)
70
Warning Label MT3KUC
See Contrast table(2)
70
Warning Label MT3E
See Contrast table(2)
70
Warning Label MT3D
See Contrast table(2)
70
Warning Label MT3DL
See Contrast table(2)
71
Back Label MT3KUC
See Contrast table(2)
71
Back Label MT3MY
See Contrast table(2)
71
Back Label MT3NV
See Contrast table(2)
71
Back Label MT3DBD
See Contrast table(2)
71
Back Label MT3DL
See Contrast table(2)
72
Fuse Caution Label
See Contrast table(2)
NSP
73
Front Panel
500PMT101001
NSP
74
GND. Copper Plate C
650PMT152000
NSP
75
GND. Copper Plate D
650PMT153000
NSP
76
GND. Copper Plate E
650PMT155000
NSP
77
Control Panel Plate
650PMT116010
NSP
78
Front Cover
See Contrast table(2)
NSP
79
Display Lens
500PMT106010
NSP
80
Illuminated Ring
509PMT105000
NSP
81
CD Door
500PMT102001
NSP
82
CD Door Cover
600PMT120010
83
· · · · · ·
84
PCB Insulation Sheet
650PMT157000
85
CD Caution Label
See Contrast table(2)
NSP
86
Fuse Label
See Contrast table(2)
87
Voltage Sel. Cover
See Contrast table(2)
88
Voltage Sel. Knob
See Contrast table(2)
NSP
89
Serial Label
See Contrast table(2)
90
Tube AWG5 D4.72 L70
728000047L07
91
Tube AWG5 D4.72 L90
728000047L09
92
Tube AWG1 D7.35 L120
728000073L12
93
Tube AWG1 D7.35 L160
728000073L16
94
Tube AWG1 D7.35 L15
728000073L15
95
Ref Silver Label
See Contrast table(2)
Mark No.
Description
Part No.