Pioneer XCLA-21 Service manual

3 COMPACT DISC MULTI CHANGER

LA21

STEREO CD TUNER

STEREO CD TUNER

XC-LA21

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

Type

DBDXCN AC110-127V/220-230/240V With the voltage selector

DDXCN/AR AC110-127V/220-230/240V With the voltage selector

Model

XC-LA21 the following method.

Power Requirement

¶ System Component Table

The voltage can be converted by

ORDER NO.

RRV2392

Component Model Service manual Remarks

COMPACT MINI COMPONENT X-LA21 RRV2370
STEREO CD TUNER XC-LA21 RRV2392 This manual.
STEREO POWER AMPLIFIER M-LA21 RRV2393
SPEAKER SYSTEM S-LA21 RRV2394

CONTENTS

1. SAFETY INFORMATION

2. EXPLODED VIEWS AND PARTS LIST

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

4. PCB CONNECTION DIAGRAM

5. PCB PARTS LIST

6. ADJUSTMENT

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 2000

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.....

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20
30
33

2
4
8

7. GENERAL INFORMATION

7.1 DIAGNOSIS

7.1.1 TROUBLE SHOOTING

7.1.2 DISASSEMBLY/ASSEMBLY

7.2 PARTS

7.2.1 IC

7.2.2 DISPLAY

7.3 REMOTE CONTROL UNIT

8. PANEL FACILITIES AND SPECIFICATIONS

..................................................

..........................................................

..........................................................

................................

........................

................

...............................................

..........................

....

T – IZK OCT. 2000 Printed in Japan

37
37
37
41
49
49
51
52
54

XC-LA21

1. SAFETY INFORMATION

This service manual is intended for qualified service technicians ; it is not meant for the casual do-it­yourselfer. 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.

LABEL CHECK

THIS PIONEER APPARATUS CONTAINS

IMPORTANT

LASER OF CLASS 1.
SERVICING OPERATION OF THE APPARATUS
SHOULD BE DONE BY A SPECIALLY
INSTRUCTED PERSON.

LASER DIODE CHARACTERISTICS
MAXIMUM OUTPUT POWER: 5 mW
WAVELENGTH: 760 - 800 nm

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.

2

2. EXPLODED VIEWS AND PARTS LIST

NOTES:• Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.

2.1 PACKING (X-LA21)

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.

•

20DDXCN/AR Only
19
16

XC-LA21

9(1/2)

17

14

9(2/2)

10

3
6

5

2

7

SPEAKER

SYSTEM

TOP SIDETOP SIDE

1

4

13

FRONTFRONT

FRONTFRONT

10

11

11

15

XC-LA21
REAR

M-LA21
REAR

8(2/2)

12

12

8(1/2)

8(2/2)

12

8(1/2)

18
18

(1) PACKING PARTS LIST

Mark No. Description Part No.

1 AM Loop Antenna ANT-PMT1E-AL
2 Remote Control Unit AXD7289
3 RCA Audio Cable 122003220100

NSP 4 ‘AAA’ Size R03 Batteries 130115004000

5 FM Wire Antenna 132030001001
6 Power-cord Plug Conversion Adaptor

138011722000
7 Battery Door 500RC4603070
8 Polyform Unit 800PMT190001
9 Polyfoam (Speaker) 800PMT390000

10 Poly Foam Sheet (C) SP 801999000002

NSP 12 PE Polybag (AC Cord) 805032115000

11 Polythenefoam Sheet 801999000005

NSP 13 PE Polybag (Remocon) 805035105000
NSP 14 PE Polybag (Antenna) 805070100000
NSP 15 PE Polybag (I Book) 805085140000

16 Operating Instructions 811PMT391011

(English/Spanish/Chinese)
17 Carton See Contrast table (2)
18 Corrugate Card 815001405213
19 Additional Sheet 810PMT395010
20 Correction Sheet See Contrast table (2)

(2) CONTRAST TABLE

X-LA21/DBDXCN and DDXCN/AR are constructed the same except for the following :

Part No.

Mark No. Symbol and Description X-LA21 X-LA21 Remarks

/DBDXCN /DDXCN/AR

17 Carton 813PMT393020 813PMT393010
20 Correction Sheet Not used 810PMT395020

3

XC-LA21

2.2 EXTERIOR SECTION

89

70

71

8

87

8

8

14

D

E

2

8

F

16

36

34

8

5

88

26,61

63

B

38

29

27

DDXCN/AR
Only

K

44

93

2

69

22

H

49

7

1

52

50

59

55

C

G

15

6

13

E

H

53

2

8

33
Refer to section
"2.3 CD MECHA.
SECTION".

44

28
31

15

56

7

51

84

65

8

2

F

18

32

15

A

20

68

DDXCN/AR
Only

8

64

G

F

2

25

91
92

94

J

B

E

D

C

A

15

6

90

8

K

16

48

16

8

37

8

47

G

12

8

23

96
62

35

16

96
62

85

16

40

J

77

42

24

D

6

8

97

74

75

58

8

A

43

C

46

73

9

80

39

6

10

B

99

21

41

9

79

45

81

82

8

17

60

19

98

76

95

78

16

67

4

(1) EXTERIOR SECTION PARTS LIST

Mark No. Description Part No.

1 AUDIO Assy PMT101000210
2 Screw BBZ30P060FMC
3 • • • • • •
4 • • • • • •
5 Screw BBZ40P060FMC

XC-LA21

Mark No. Description Part No.

51 Transformer Bracket 605PMT122000
52 FCC Cable HLD 605PMT142000
53 Cable Holder 605PMT143000
54 • • • • • •
55 Heat Sink 613PMT131000

6 Screw BPZ20P050FMC
7 Screw BPZ26P080FMC
8 Screw BPZ30P100FNI
9 Screw CBZ30P060FMC

10 CD Assy CD--PMT1E
11 • • • • • •

12 DISPLAY/CTL Assy PMT101000041
13 RECT ASSY PMT1LA100061
14 AUX Assy PMT1LA100091
15 Screw KBZ30P040FMC

16 Screw KBZ30P060FNI
17 CD DOOR Assy PMT3CDDR-DB
18 TRANS Assy PMT1LA100071
19 S-Assy PMT3 FP01 SUBPMT3CDFP
20 STD. TUNER Assy TUN-PMT1E-DL

21 FFC Cable 16Pin L100 040160100101
22 FFC Cable 16Pin L260 040160260100
23 FFC Cable 17Pin L100 040170100100
24 FFC Cable 24Pin L200 040240200130
25 FFC Cable 30Pin L400 040300400100

26 STANDBY TRANSFORMER 1233D4828140
27 Power TF EI35 11-24V 1231D3513140
28 Micro Fuse 251001 124010010002
29 Fuse (500mA/250V) 124005020002

30 • • • • • •

31 Micro Fuse #25103.5 124035010000
32 AC Cord See Contrast table (2)
33 CD MECHA,CMCJ 153000117000

34 Top Panel 500PMT148002
35 Direct Access Knob Lens 500PMT111000

56 CD Shield Plate 650PMT139000
57 • • • • • •
58 Display Filter Plate 650PMT147002
59 PC Sheet 650PMT149000
60 Transport Stopper PL 650PMT197010

61 Shielding Plate 650277225000
62 Rubber Foot 700PMT384000
63 Capacitor Boot 700PMT150000
64 Bushing 700PMT156000
65 Cable/Plastic Tie 727000100000

66 • • • • • •

NSP 67 Trans. Stopper Label 809PMT194021

68 AC Cord Label See Contrast table (2)
69 Voltage Label See Contrast table (2)
70 Warning Label See Contrast table (2)

71 Back Label See Contrast table (2)
72 • • • • • •

NSP 73 Front Panel 500PMT101002
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 650PMT116020
NSP 78 Front Cover 600PMT160010
NSP 79 Display Lens 500PMT106020
NSP 80 Illuminated Ring 509PMT105000

NSP 81 CD Door 500PMT102002
NSP 82 CD Door Cover 600PMT120020

83 • • • • • •
84 PCB Insulation Sheet 650PMT157000
85 CD Caution Label See Contrast table (2)

36 Back Cover 500PMT183000
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 510PMT328001

46 Clock Control Knob 510PMT108002
47 Direct Access Knob Set 510PMT109020
48 Side Panel-L 600PMT117002
49 Side Panel-R 600PMT118002

NSP 50 Bottom Tray 600PMT121000

NSP 89 Serial Label 809000009000

NSP 97 GND. Copper Plate A 650PMT140000
NSP 98 GND. Copper Plate B 650PMT141000

86 • • • • • •
87 Voltage Sel. Cover 500PMT110002
88 Voltage Sel. Knob 510PMT112002

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 Volume Chrome Ring 509PMT330001

96 Foot Stand 509PMT329000

99 Ferrite Core 032219180000

(2) CONTRAST TABLE

XC-LA21/DBDXCN and DDXCN/AR are constructed the same except for the following :

Part No.

Mark No. Symbol and Description XC-LA21 XC-LA21 Remarks

32 AC Cord 134250220000 134220120016
68 AC Cord Label Not used 809PMT394100
69 Voltage Label Not used 809PMT394080
70 Warning Label 809PMT396110 809PMT394010
71 Back Label 809PMT396030 809PMT396050

85 CD Caution Label 809PMT194070 809PMT394090

/DBDXCN /DDXCN/AR

5

XC-LA21

2.3 CD MECHA. SECTION

41

23

21

33

6

42

43

34

46

28

51

56

57

27

32

49

A

53

20

C

18

38

39

45

B

1

40

19

5

53
52

39

8

8

3

50

C

2

36

48

29

25

26

22

11

35

47

37

51

50

55

24

9

8

49

7

8

4

38

15

54

44

49

31

30

B

A

53

16

48

17

14

13

10

12

6

CD MECHA. SECTION PARTS LIST

•

XC-LA21

Mark No. Description Part No.

1 Assy Chassis 45-093-4256
2 Drawer 2 45-264-3278
3 Assy Holder L 45-093-3241
4 Assy Holder R3B 45-093-3296
5 Assy Gear Drive 45-093-4243

6 Assy Carriage 101 45-093-4347
7 Bevel Gear 4 45-222-4214
8 Assy Gear Star 45-093-4244
9 Cover 2 45-112-3154

10 Shaft 45-300-4173
11 Slider 4 45-259-3175

12 Gear Spline 45-222-4021
13 Bevel Gear 1 45-222-4059
14 Gear Idler 1 45-222-4176
15 Plate Spring 45-160-4174

16 Bevel Gear 3 45-222-4177
17 Pulley C 45-222-4058
18 Assy Clamper SO 45-093-4358
19 Arm Slider R 45-219-3187
20 Arm Slider L 45-219-3188

21 Slider 1 45-259-2185
22 Assy Slider 2 45-093-3240
23 Arm Stopper A2 45-239-4279
24 Arm Stopper B 45-239-4065
25 Gear Idler A 45-222-4128

26 Gear Idler C 45-222-4051
27 Lever 2 45-259-3289
28 Lifter 45-259-3025
29 Pulley A 45-229-4052
30 Assy Motor CRG S 45-093-4238

Mark No. Description Part No.

31 Assy Motor DRW S 45-093-4239
32 Spring 01-080-4541
33 Spring 01-082-4643
34 Spring 01-082-4647
35 Belt 02-083-4171

36 Belt 02-083-4172
37 Cushion 45-063-4136
38 Insulator 45-063-3201
39 Insulator 45-063-3202
40 Pickup Unit KSM213CCM

41 Assy Carriage 201 45-093-4348
42 Assy Carriage 301 45-093-4349
43 Spacer SW 45-219-4127
44 Assy PC Board A 45-093-4263
45 Assy PC Board B 45-093-4265

46 Assy PC Board C 45-093-4264
47 Rubber Cushion 45-063-4115
48 Washer GWP15X045025S
49 Screw GSL20A2606
50 Screw GSL20B2006

51 Screw GSL10B2006
52 Washer GWN31X120050
53 Screw GSL15A2608
54 Screw GSP14A2604
55 Screw GST15A2005

56 Lead Wire 45-072-4171
57 Lead Wire 45-072-4172

7

1

23

XC-LA21

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

A

3.1 BLOCK DIAGRAM

PICKUP

ASSY

(16P)

B

CN3

(16P)

Spindle

Motor

IC3

TA2092N

DRIVER

Carriage

CN4

(6P)

Motor

CD MECHA.

-

M M

+

321

CARR-

DRAW-

CARR+

7 3

IC6

TA7291S

DRIVER

9 1 9 1

FIN

RIN

-

Drawer
Motor

+

4

CN5

DRAW+

7 3

IC7

TA7291S

DRIVER

FIN

RIN

CN6

(30P)

ANTENNA

CN8

(30P)

12-1512-15

FM

AM

4

STD. TUNER ASSY

A

(FM)

(AM)

FE101

1 8

T101 T103

CN102

CN101

1
2

(FM)

(AM)

IC2

TA2065F

RF AMP.

RFO RFI

1

53

IC1

TC9284BF

DECODER

LO

6

2

RO

2

6

BA4558N

IC4

CD-L

1
7

CD-R

29

29

30

30

CONTROL DATA

+9V

27

+9V

CD ASSY

C

B

DISPLAY/CTL ASSY

G

LCD401

FL TUBE

CN401

(24P)

27

28

28

CN205

(24P)

CN402

IC401

PDA068A

73-76

8-10 8-10

SYSTEM CONTROL IC

CN404

(17P)

5V

10 10

D

FUNCTION

KEY INPUT

JOG

VOL
JOG

-24V

3V8

P8V

3V8

12 12
14 14
15 15
17 17

CN207

(17P)

8

1234

5

: AUDIO SIGNAL ROUTE (RF/CD)

(T)

: AUDIO SIGNAL ROUTE (TUNER)

(AM)

: AUDIO SIGNAL ROUTE (AM)

(FM)

: AUDIO SIGNAL ROUTE (FM)

(AU)

: AUDIO SIGNAL ROUTE (AUX)

(PH)

: AUDIO SIGNAL ROUTE (PHONES)

(FM)

(AM)

FM-IN

1

LA1837NZ

AM-RF

27

TUNER-L

IC101

TUNER-R

TUNER-L

17

TUNER-R

16

CN13

(3P)

CN206

(16P)

L-CD

R-CD

678

XC-LA21

CN20

(6P)

1
4

(AU)

3
5

LK501

(4P)

1
4

(AU)

Q908
Q909

(PH)

PHONES
JK503

L
SPEAKER

OUT
R

L

AUXOUT

R

L

AUXIN

R

L

To M-LA21

R

A

B

M-LA21

From
XC-LA21

L
R

5 7
3 1

IC504

BA4558N

CN22

(8P)

SN602

757

5

POWER AMPLIFIER

(8P)

18 14
22 15

STK411-230

CN604

(7P)

IC601

D

J201

(13P)

7

7

9

9

12

12

13

13

10

10

CN204

CN208

(3P)

(AU)

(AU)

CN203

(13P)

9V

IC202

BH3854AFS

31 24

2 9

CN208

1

1

3

3

CN202

11

11

13

13

C

(3P)

AUDIO ASSY

(T)(T)

(T)

(16P)

(AU)

(T)

14
15 13

(AU)

4

L-CH
R-CH

42

(PH)

RL601

PLY-DPDT

AUX ASSY

(AU)(AU)

5 7
3 1

(AU)(AU)

9V

(3P)

31

31

WH602

(4P)

IC901

BA4558N

BUFFER

+TUNER9V

CN11

(14P)

5

32

11

9V

3

3

9V

1
2
3
4
8

9
10
11

+TUNER9V

1

+M9V

2

+CD9V

3

+MCU9V

4

5V

8

AC3.8V AC3.8V

9

AC3.8V

10

-24V

11

CN301

(14P)

RECT ASSY

E

9V

4 2

IC301

9V REG.

5V

3 1

IC302

5V REG.

D301-D304

IC201

BU4052BC

SELECTOR

CN302

(12P)

1
2

AC24V

6 6
7
8

AC3.8V

9

MCUAC

10

SN302

1
2

7
8
9

10

(12P)

TF302

POWER

TRANSFORMER

IC303

IC304

IC305
IC307

TF303

POWER

TRANSFORMER

TRANS ASSY

F

F306

500mA/250V

C

LIVE

NEUTRAL

AC IN

D

9

5

6

7

8

1

XC-LA21

3.2 OVERALL WIRING DIAGRAM

A

PICKUP ASSY

23

4

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 1 23 4 5 6 7 8 9 10 11 12 13 14 15 16

CN3

CN6 CN8

DGND

1

1

R-CH

2

2

L-CH

3

DMF
DMR
CMF
CMR

SLT

BUCK

CCE

B3
B2
B1

B0
MG
AG
DG

+9V
+9V

CD-L

CD-R

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

13

13

14

14

15

15

16

16

17

17

18

18

19

19

20

20

A

21

21

22

22

STD. TUNER ASSY

23

23

(TUN-PMT1E-DL)

24

24

25

25

26

26

27

27

28

28

29

29

30

30

EXTRA SW

SP CLT

CARRIAGE
MOTOR

DRAWER
MOTOR

M

M

B

CD
MECHA.

CN5

CARR+

1
2

CARR-

3

DRAW-

4

DRAW+

CN4

DM+

1
2

DM-

3

FM+

4

FM-

5

SLT

6

GND

CN2

EXTRA SW

1
2

HOME SW

3

COM

4

CN2 SW

5

CN1 SW

6

OP/CL SW

7

FWD SW

8

RVS SW

CD ASSY

B

(CD--PMT1E)

HOME SW

CN2 SW
CN1 SW

OP/CL SW

FWD SW

RVS SW

CD POWER

AM ANT

1 2

CN101

FM ANT

CN102

CN401 CN205

FWD SW

C

G

DISPLAY/CTL
ASSY

(PMT101000041)

RVS SW

OP/CL SW

CN1 SW
CN2 SW

HOM SW

EXTRA SW

CD-BUS0
CD-BUS1
CD-BUS2
CD-BUS3

CD-CCE

CD-BUCK

CD POWER

SYS-MUTE

CD-SW PUIN

CLOCK POWER

RDS-DATA

RDS-CLOCK

DTS-PLLSTEREO

D

DMR
DMF
CMR
CMF

24

24

23

23

22

22

21

21

20

20

19

19

18

18

17

17

16

16

15

15

14

14

13

13

12

12

11

11

10

10

9

9

8

8

7

7

6

6

5

5

4

4

3

3

2

2

1

1

NC

CHANNEL 0

TUNER

CHANNEL 1

VOL-DATA

VOL-LATCH

VOL-CLOCK

POWER CTRL

DTS-PLLCLOCK

5V

DTS-PLLPERIOD

-24V

GND

3V8

P8V

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

DTS-TDATA

3V8

CN207

CN404

10

1234

5

678

XC-LA21

Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PAR TS LIST" or "PCB PARTS LIST".

A

AUX IN

AUX OUT

CN13

TUNER-L

GND

TUNER-R

CN206 CN202

R-CH

DGND

L-CH

SP CLT

LATCH

DATA

CK

MUTE

CH-B
CH-A
L-CD

AGND

R-CD
AGND
AGND
AGND

CN201

1

1

2

2

3

3

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

13

13

14

14

15

15

16

16

L

R

L

R

CN203

AUX ASSY

D

(PMT1LA100091)

J201

1 2 3 4 5 6 7 8 9 10 11 12 13
1 2 3 4 5 6 7 8 9 10 11 12 13

MUTE

AGND

AGND

AGND

VOLOUTL

VOLOUTR

LINEOUTL

+9V

MUTE CLT

LINEOUTR

SPCTL

AUXINL

CN204

CN208

AUXINR

1 2 3
1 2 3

AGND

VOLOUTL

VOLOUTR

L

R

To M-LA21

To M-LA21

B

J905

AUDIO ASSY

C

(PMT101000210)

CN11 CN301

+TUNER9V

1

1

+M9V

2

2

+CD9V

3

3

+MCU9V

4

4

VT

5

5

POWER CLT

6

6

CLOCK CLT

7

7

5V

8

8

AC3.8

9

9

AC3.8

10

10

-24V

11

11

D GND

12

12

D GND

13

13

M GND

14

14

5

CN204

PWR CTLAC9V

AGND

1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9

SN204

E

RECT ASSY

(PMT1LA100061)

GND

DGND

+3V

PGND

6

-31V

CN302 SN302

1

AC12V
AC12V
AC31V

AC31VGND

AC31V
AC24V

AC24VGND

AC3.8V
AC3.8V

MCUAC

MCUACGND

RELAYB+

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

F

TRANS ASSY

(PMT1LA100071)

7

LIVE
NEUTRAL

C

AC IN

D

11

8

1

XC-LA21

3.3 STD. TUNER ASSY

118-040102-002A

A

136-14PMT1-B00J

CN301

E

135-006116-160J

(AM)

118-040102-002A

003-020280-050

(AM)

23

042-104511-000A

(FM)

(FM)

003-050010-050

037-003534-100

(FM)

019-000107-006A

(AM)

012-007840-010A

(AM)

(FM)

005-035100-000A

4

(FM)

008-314170-008A

012-006120-010A

007-200610-000A

003-020380-050

B

CN202

(AM)

(AM)

C

008-685500-000A

(T)

136-TOCB17-171J

(T)

C

CN201

136-03PMT1-B00J

CN404

G

C

010-849257-001A

CN401

009-607200-000A

G

003-024010-050

D

136-FEBTVK-240J

135-006232-300J

CN6

12

A

1234

B

5

678

XC-LA21

003-020380-050

(AM)

(T)

019-000107-006A

(AM)

(FM)(FM)

(AM)

(FM)

010-101837-000A

(FM)

012-002240-010A

003-020380-050

003-020380-050

(AM)

003-082110-050

(T)

003-020380-050

(T)

003-020280-050

012-000120-010A

A

003-020280-050

(T)

B

003-020380-050

003-020280-050

003-020380-050

003-020380-050

011-010051-120A

A

(T)

018-010014-000A

008-685500-000A

STD. TUNER ASSY
(TUN-PMT1E-DL)

019-000450-012A

012-7NF803-007A

(T)(T)(T)

: AUDIO SIGNAL ROUTE (RF/CD)

(T)

: TUNER SIGNAL ROUTE

(AM)

: TUNER SIGNAL ROUTE (AM)

(FM)

: TUNER SIGNAL ROUTE (FM)

(T)

C

D

A

5

6

7

8

13

1

XC-LA21

3.4 CD ASSY

23

003-624052-050A

4

A

B

135-006232-301J

003-624052-050A

037-003534-100

020-001693-000A

010-849284-000A

Decorder

C

D

CN8

A

CD MECHA.

136-08PMT1-250J

008-680500-000A

011-010056-120A

14

B

1234

5

678

XC-LA21

CD ASSY

018-010014-000A

008-685500-000A

003-624052-050A

B

(CD--PMT1E)

A

TSO

002-104085-102A

EFO

VREF

002-472065-000A

RFO

RF Amp.

010-832065-000A

002-104085-102A

CD PICKUP

002-104085-102A

135-TOCA16-160A

B

136-04PMT1-250J

5

M

M

CARRIAGE
MOTOR

DRAWER
MOTOR

010-832065-000A

6

: AUDIO SIGNAL ROUTE (RF/CD)

7

136-067238-205J

B

8

C

CD MECHA

D

15

1

23

XC-LA21

3.5 AUDIO, AUX, RECT and TRANS ASSYS

4

CN13

A

135-006116-160J135-PHS030-030J

A

(T) (T)

Selector

(AU)

B

AUDIO ASSY

C

(AU)

(AU)

(AU)

A

(AU)

CN206

004-010310-100

004-068350-100

004-068350-100

004-010310-100

004-023310-100

(PMT101000210)

CN904

D

008-801144-000A

(AU)

120-100470-000

050-140060-200J

010-400009-001A

9V Reg.

C

D

J904

118-000244-000A

(AU)

J903

118-020202-000A

(AU)

(AU)

(AU)

050-030160-200J

(AU)

(AU)

(AU)

(AU)

(AU)

003-020380-050

008-801144-000A

D

(AU)

008-801144-000A

CN1

C

136-03189D-200J

AUX ASSY
(PMT1LA100091)

008-685500-000A

135-2001WS-140J

CN11

A

011-010240-120A

16

C D E

1234

011-010051-121A

5

678

XC-LA21

011-024001-000A

135-005267-090J

: AUDIO SIGNAL ROUTE (RF/CD)

(T)

: TUNER SIGNAL ROUTE

(AU)

: AUDIO SIGNAL ROUTE (AUX)

• NOTE FOR FUSE REPLACEMENT

CAUTION -

FOR CONTINUED PROTECTION AGAINST RISK OF FIRE.
REPLACE WITH SAME TYPE AND RATINGS ONLY.

A

B

136-09PMT1-C00J

011-020005-000A

011-010082-120A

011-024001-000A

RECT ASSY

E

(PMT1LA100061)

011-024001-000A

008-685500-000A

011-024001-000A

050-120060-251J

TRANS ASSY

F

(PMT1LA100071)

124-010010-002A

011-024001-000A

1233D4828140

124-035010-000A

124-010010-002A

124-010010-002A

003-010320-250A

019-500160-000A

1235D6636140

003-010320-250A

C

025-230041-000A

025-230041-000A

124005020002

LIVE

NEUTRAL

D

E FC

5

6

7

8

17

1

XC-LA21

3.6 DISPLAY/CTL ASSY

23

4

A

135-FESTVK-240J

B

DISPLAY/CTL ASSY

G

(PMT101000041)

110-033045-013A

110-033045-013A

110-033045-013A

006-747300-05CA

CN205

A

001-229103-000A

For

C

DOWNLOAD

003-H12203-204A

CN207

A

110-033040-013A

135-TOCB17-171J

D

021-114165-000A

18

110-033162-003A

G

1234

5

678

XC-LA21

115-000920-000A

A

001-220104-000A

001-220104-000A

B

SYSTEM CONTROL IC

009-332768-100A

020-000800-000A

003-430050-050

001-220104-000A111-000638-000A

DISPLAY/CTL ASSY

S401 : STOP 7
S402 : PLAY 3 8
S403 : BASS/TREBLE
S404 : STANDBY/ON
S405 : ENTER
S406 : TIMER
S407 : DISPLAY/CLOCK
S408 : 4 / 1 / TUNING –
S409 : ¡ / ¢ / TUNING +
S410 : CD SELECT 3
S411 : CD SELECT 2
S412 : CD SELECT 1
S413 : CD3 OPEN/CLOSE 0
S414 : CD2 OPEN/CLOSE 0
S415 : CD1 OPEN/CLOSE 0

C

D

G

5

6

7

8

19

1

23

XC-LA21

4. PCB CONNECTION DIAGRAM

NOTE FOR PCB DIAGRAMS :

A

Part numbers in PCB diagrams match those in the schematic
diagrams.
The parts mounted on this PCB include all necessary parts for
several destinations.
For further information for respective destinations, be sure to
check with the schematic diagram.
View point of PCB diagrams.

4

Connector

P.C.Board

B

4.1 STD. TUNER ASSY

G

CN401

C

G

CN404

R413

R412

1

5

10

CN207

15

W242

3V8

5 VOL-DATA
6 VOL-LATCH
7 VOL-CLOCK
8 POWER CTL
9 DTS-CLOCK
10 6V
11 DTS-PERIOD

Capacitor

Chip Part

R411

FWD SW
RVS SW
O/C SW
CN1 SW
CN2 SW
HOME SW
EXTRA SW

R421

DMR
DMF
CMR

1 NC

CMF

2 CH 0

CD-BUS0

3 TUNER

CD-BUS1
CD-BUS2

4 CH 1

CD-BUS3
CD-CCE
CD-BUCK
CD-POWER
SYS-MUTE
CD-SW_PUN
CLOCK-PWR
RDS-DATA

W120

RDS-CLOCK
DTS-STEREO

12 -24V
13 GND
14 3.8V
15 P8V
16 DTS-DATA
17 3.8V

B

20

15

10

CN6

CN205

SIDE A

SIDE B

W105

RA402

W101

5

+5V

W109

1

R408

STD. TUNER ASSY

A

CONTACT SIDE

CN8

1

W106

R407

W102

DGND

W107

W108

R410

R424

W111

M9V

R409

W110

MGND

W234

SPCLT

CMR

W104

A GND

W235

AGND

W240

DGND

R CH

W103

DGND

L CH

CN2
O/C
RVS
DMR

CCE

M 9V

SLT

B2
B0

W233

D GND

DZ102

EXTRA

5

HOME
CN1

FWD

10

DMF
CMF

15

CD PWR
BUCK

B3

20

W232

B1
M GND

D GND
CD 9V

30

1 HRCH
2 D GND
3 HLCH
4 SP CLT

5 LATCH

CD9V

1

CD R

10

6 DATA

CONTACT SIDE

7 CK

CN206

8 MUTE
9 CH B

10 CH A

11 CD L
12 A GND
13 CD R
14 A GND

25

CD L

E

E

Q120

W241
+5V

R178
R161

W113

L106

C163
C161

R199
C162

CX102

RED

5

MCU8V

W114

AGND

W117

15

W115
W119
W116

DGND

15 A GND
16 LINE MUTE

1

CN13

W141

CD9V

M9V

CD9V

M9V

MCU9V

UNREG+

P CLT
C CLT

5V

10

W118

DGND

10

15

W230

1

Q118

E

IC103

CN11
TU9V

E

5

AGND

RED

W180

W126

+5V

AC 3.8V
AC 3.8V

-24V
D GND
D GND
M GND

5

C160

1

W122

W127

MGND

C159

R155

UNREG+

W128

R142

R181

C178

C176
W121
R160

C179

E

AGND

E

R154

R192

E

E

D103

Q112

W123

R172

Q113

C174
C173

W130

AGND

W131

W125

R171

C172

D102

R170

R169

R147

C141

R157

C171

E

T108

C146

E

Q115

R137

T107

R139

C144

D104

R166

R167

R138

R165

C145

C142

R168

W124

AGND

W129

C167

R136

15

AGND

16

C196

C170

R175

R176

CN202

C

CN201

C

CN301

E

D

20

A

Q120

Q118
IC103

Q113

Q112

Q115

1234

5

678

XC-LA21

A

B

C144

D104

R167

R138

R166

R165

C145

C142

W124

AGND

C167

R168

R136

15 10

W129

AGND

C170

R175

R176

T106

C188

5

C187

C177

C196

252016

R129

C166
C137

C169

C136

R132

C165

R163

C168

TUNER BOARD

R134

IC101

R133

1

R128

C131

C130

R173

30

C197

C147

CF102

P106

R164

C135

C133

C125

C190

C191

R130

W227

AGND

W246
C126
C128

C127
C129

C186
R127

R174

E

E

Q111

AGND

CF103

+9V

W243

R190

W132

+9V

R191

W134
+9V

C140

W139
W140

C185

C132

R124

W138

C154

W142

R179

R150

W226

R125

C152

R149

T105

R153C157

C139

W136

CX101

R141

R140

C148

20

R152

R177

L102

R111

P104

IC102

W245

C180

R146

C151

R104

DZ103

R103

R102

W247

P102

P103

C156

WHITE

FE101

R182

W133

L107

R151

C121

Q117

E

E

Q116

E

E

C

E

E

C105

Q101

CF101

E

R101

C108

C107

C158

R144

C181

WHITE

15

P105

1051

C150

R109

R180

R106

Q105

E

Q107

E

T103

W135

E

C106

C104

R108

R115

VD103

C119

C182

R110

R107

C123

C120

C102

R105

P101

C111

R121

PMT1-01-01

C103

E

C183

C184

C101

E

C109

C113

VD101

C116

R113

W143

D101

CN102,

CN102

Q102

T101

TC101

CN101

D

IC101

Q111

IC102

5

6

Q101

Q105

Q107

Q102

7

SIDE A

A

8

21

Q116Q117

XC-LA21

4.2 CD ASSY

A

B

CARRIAGE

MOTOR,

DRAWER

MOTOR

CN5

C

1

RED

W47
W48

IC5

BLACK

1

SPCLT

CN1

1

C72

CD+9V

GNDM

5

IC6

R28

R33

OP/CL

51

HOME

COM

CN1

CN2

51

CN2

L-CH

DRAW+
DRAW­CARR­CARR+

1

RVS

FWD

R-CH

DGND

PICKUP

PMT-1-01-03

C73

W45

W46

R67

W44

R68

EXTRA

RED

1

OP/CL

SPCLT

L-CH

DGND

CN2

FWD

EXTRA

CN1

HOME

R-CH

51015 2520 30

1

ASSY

RVS

CD+9V
CMR

DMR

CDPWR

CMF

DMF

23

CD ASSY

B

GND

SLT

FM-

FM+

DM-

DM+

1

5

C47

C35

1

W12

W11

W13

W19

GNDCD

W21

TEO

VR3

C65

C3

C68

C61

X1

C40

R36

Z1

R38

E

R60

R59

R58
R57
R56

R35

SLT

BUCK

R61

CCE

W43

B2

W42

GNDCD

B0

DGB1B3

W41

AG

DG

VREF

W40

CD+9V

R90

+9V

CDL

+9V

CDR

1

5

15

C75

C42

E

Q5

CN6

CD MECHA.

K19

CN3

E

1

W39

R91

CD+9V

W49

10

16

GNDCD

W38

R93

C54

E

VREF

W36

Q6

R95

CD+5V

W37

C51

E

K20

R94

L1

R73

SERVO BOARD

1

IC4

C56

W34

C49

R40

D2

R39

CD+9V

W35

5

GNDCD

R92

GNDCD

W33
D3

R41

C50

R72

C55

W30

D1

W1

W2

W3
W4

W5

CD+5V

CD+5V

CN4

W6
W7

C62

Q2

E

K21

RED

GNDM

VR2

W24

L2

C48

C22

W8

CD+9V

W9

20 15

W14

C4
W15

TEB

IC2

C20

C16

C27

GNDCD

W25

W26

C69

C45

C41

4

C36

GNDM

105

VREF

3

W23

TSO

2

R9

W29

CD+5V

Q1

C39

R34

W10

IC3

1

W17

C31

R2

R1

W18

W20

FEO

C12
GNDCD

W22

CD+5V

GNDCD

W28

GNDCD

W32

VR4

FEO

E

4

C38

E

C34

VR1

FEB

GNDCD

C30

W16

RFO

W27

C9

CN8

CD MECHA.

IC6 IC4Q5 Q6

IC5

A

VR3

VR2

VR4

IC3 Q1Q2

VR1

D

SIDE A

22

B

1234

CD ASSY

B

GNDCD

C32

C17

R17

R82

R15

C1

1

CD+9V

GNDM

15 20
10 5 1

C43

C8
R30

C15

C29

48 45 40

51

1410

R96

234

XC-LA21

A

SLT

GND

FM-

FM+

DM-

DM+

51

GNDM

R31

R74

R76

R75

R83

R32

38

C26

35 30 25

R24

R29
C24

2415

20

R77

B

C23

GNDCD

C6C7

R12

CD+5V

R6

C2

C25

GNDCD

R21

R13R11

C18

IC1

C21

GNDCD

R10

C11

R27

C44

R16

R26

C28

R22

R8

C14

GNDCD

R5

R19

R20

40

60555045

C10

C37

R3

C71

R4

CD+5V

IC2

R23

R25

GNDCD

C33

R7

35
30

25

C46

20 15 10 5

C13

1

C19

80757065

SERVO BOARD

C66

R66

R42
R43

R44
R45

C64
C57

CD+5V

C58

CD+5V

R50

W31

R51

C53

GNDCD

C52

R46

R48

R49

R47

R54

1

C60

5

CD+9V GNDCD

IC1

R55

R53

R52

C59

CD+5V

VREF

10

R37

GNDCD

CD+9V

5

C74

15

PMT-1-01-03

CDR

30

VREF

CD+9V

+9VDGDGB3B1

25

AG

+9V

CDL

GNDCD

CD+9V

20

B2

B0

CCE

BUCK

CMR

SLT

CDPWR

CMF

15

DMF

FWD

10 5

RVS

DMR

CN1

OP/CL

HOME

SPCLT

CN2

EXTRA

R-CH

DGND

L-CH

CD+9V

GNDM

EXTRA

1

HOME

5

COM

DRAW+
DRAW­CARR­CARR+

5

CN2

CN1

OP/CL

5

1

FWD

DGND

1

RVS

R-CH

L-CH

1

1

SPCLT

C

D

SIDE B

B

1

2

3

4

23

1

4

2

2

XC-LA21

4.3 AUDIO ASSY

A

23

4

C278

C270

C260

R291

R294

R293

Q261

R300

PWRCTRL

AC
9V

AGND

GND

DGND

+31V
PGND

-31V

C229

W228

AGND

Q258

Q264

1

W268

W211

R283

Q260

CN204

5

AGND

D252

W280

-31V

W267

Q251

R2

W269

GNDB

GND

C262

1

MUTE

W288

AGND

Q259

R228

W258

W259

W201

W209
W213

1

R292

Q257

Q263

W252

R229

+9V

GND

DGND

R220

C233

W214

W212

AGND

P3

C225

W216

W215

Q262

B

AUDIO ASSY

C

D202

D204

DGND

W290

C224

D206

C236

CN208

R225

R290

C237

D205

SN204

E

W291

R210

R206

R211

R202

C209

D201

C

C203

R215
C207
R204

R203
R214

15 10

1

C282

P4

C210

C206

C211

IC201

5

TUN-R

AGND

D256

C204

D257

16

TUN-L

CN201

W203

1

HPRCH

PMT1-01-02

R217

R218

C215

Q201

C281

R209

R208

R205

W206

W204

CN202

5

1

DATA

LATCH

SP-CLT

CK

10

CH-B

MUTE

HPGND

HPLCH

HPGND

C230

R219

C228

C212

D208

C214

P1 CN203

C217

R216

VIDEO

AGND

AGND

AUDIO BOARD

C213

CD-L

CH-A

C227

15

AGND

W207

CD-R

C218

C231

IC202

C216

C219

C232

C220

C246
C226

R221

R222

C221

R223

C235

R227

R224

D209

C223

C222

C234

D203

R226

CN13

A

D

IC201 Q201

A

CN206

D

Q262IC202

CN204

Q257-Q259

24

Q263

Q260Q261

Q264

C

1234

Q
Q

R300

R294

AGND

R291

CTRL

D

D

D

Q258

R293

1

W268

C229

C260

Q264

R283

Q260

W280

CN204

5

W267

C270

D252

Q251

-31V

C262

R249

W269

W288

GNDB

GND

C269

D251

Q265
C280

C263

R270

R250

5

C268

R269
R266

R267

R268

R282

R265

C261

Q253

C264

A3

Z6

C267

Q252

GND

C271

C259

R271

W287

R281

R272

R263

R279

W285

R287

R262

R278

R251

R280

R252

678

XC-LA21

A

CN207

1

R254

R257

D255

C255

C257

+31V

W263

C251

R255

C266

R258

R264

-31V

W264

C265

R259

C252

D253

C253

W257

R253

C279

R274

W286

R277

C256

R256

C258

R276

R261

R260

C254

R275

IC251

10

R273

1

1

5

618

12

15

L253

RL251

R295

C277

C276

B

C

W211

Q260

Q264

CN203

AGND

MUTE

AGND

Q265
Q251

AGND

AGND

VOLOUTL

VOLOUTR

D

VIDEO

AUXINR

W235

AGND

W292

LINEOUTL

SPCTL

SPCTL / GND

AUXINL

1051

LINEOUTR

+8V

P2

D254

W289

W283

AGND

R288

C272

Q256

J201

Q253
Q252 Q256 Q255

5

6

R289

R286

R285

Q255

R296

L201

CN206

D

SIDE A

C

7

8

25

1

R

R

A

F

XC-LA21

4.4 RECT and TRANS ASSYS

A

CN11

A

23

RECT ASSY

E

4

RED

+TUNER8V

+CD8V

+M8V

C301

+MCU8V

VT

P CLT

CLK CLT

B

W302

1

5V
AC
+8V
A GND

5

D GND

BLU

S GND

PUR

+31V
POWER GND

WHT

-31V

SN204

W319

W320

W315

A3

5V

GRY

5

10

W301

BRN
RED

ORN
YEL

GRN

1

RECTIFIER BOARD

W318

CN301

AC 3.8V
AC 3.8V

-24V
D GND

D GND

14

M GND

C317

C318

D313

IC302

W304

W314

PMT1LA-01-06

C307

D308

A4

C302

R305

D305

D309

W313

W308

D312

W317

Q302

R304

W305

C313

R302

R303

D306

D310 D307

W316

Q301

R306R307

C310

IC301

W303

Q303

W310

R310 R309

C309

C308

C305
C306

C304
C303

D303

D304
D302

D301

W312

W311

RELAY B+

MCU AC GND

AC 24V GND

AC 31V GND

R311

W309

Q305

MCU AC
AC 3.8V
AC 3.8V

AC 24V

AC 31V

AC 31V
AC 12V
AC 12V

R301

12

10 10

CN302

5

1

12

1

SN302

5

YEL

RELAY B+
MCU AC GND
MCU AC
AC 3.8V
AC 3.8V
AC 24V GND
AC 24V
AC 31V
AC 31V GND
AC 31V
AC 12V
AC 12V

IC307
IC305

W321

IC304

IC303

ORN

PRIMA
DANGE
PMT1L
TRANS

C

CN204

C

IC302 IC301

Q301Q302 Q303 Q306

IC307
IC305
IC304

IC303

D

26

E

F

1234

5

678

XC-LA21

A

TRANS ASSY

F

PRIMARY
DANGER
PMT1LA-01-07
TRANSFORMER BOARD

PT1

C315

D311

SW301

L301

RL301

C316

W307

W306

SW302

F306

TF303

L

LIVE

ORN.

N

NL

NEUTRAL

YEL.

B

R308

C

AC IN

SIDE A

D

F

5

6

7

8

27

XC-LA21

4.5 AUX ASSY

A

1

AUX ASSY

D

23

4

R943

R968

Q909

CN203

PWRCTL

R942

J905

W902

AGND

AGND

B

J902

C932

GND

CN201

W910

AGND

Q908

W903

+9V

C923
C922
C921
C933

CN204

R969

R941

R935

AUX BOARD

CN208

C

C920

C905

W913

R917
R916

R907

C904

AGND

W914

R909
R908

R906
W905

W904

W915

AGND

R937

R910

AGND

R913

VIDEO

J201

C

C907

C908

R905

IC901

C903

5

C910

R915

C906

1

R940

W906

AUXINR

AUXINL

SPCTL

+8V

CN203

R904

R939

C902

R914

R953

LINEOUTL

MUTE CLT

LINEOUTR

R955

R962

R903

C901

C909

AGND

VOLOUTR

510

C935

R954

AGND

VOLOUTL

W919

Q903

Q902

AGND

R961

MUTE

1

Q901

R902

W918

Q910

D901

C934

D902

R911
R912
R901
R944

C926

Q912
W912

R945

R958

CN202

C

J904

J903

C931 C930

C928

R959

C929

R951 R950

C924C925

R949

R952

CN205

PMT1LA-01-09

Q909Q908 IC901 Q903

D

Q912Q902

Q910Q901

SIDE A

28

D

1234

1

D404

C421

C415

C500

R463

C419

W435

Q406

Q403

Q402

Q404

Q405

R462

C406

A

C501

R435

W409

CN404

C420

C407

W434

J433

CN15

SN15

C414

C408

R448

R447

G411

W428

C416

C417

R461

W432

R444

W420

C402

W426

R425

W403

LED412

W417

C401

C404

C497

C498

C499

C403

D403

W418

W404

R414

R418

R419

R135

R420

R442

R436

R431

R415

TP401

W416

W419

C409

W423

W424

W407

W406

W405

D401

R443

W425

R426

C418

X402

X401

W427

R416

R417

R427

W410

D402

W429

R446

R445

R449

C410

C413

C412

W408

W422

R450

W415

W414

W413

W412

W411

CN402

R437

R438

R439

R440

R441

W421

R403

R402

R401

R460

R434

R432

R433

R430

R429R428

RA403

R452

R453

R454

RA404

RA405

RA406

C405

CN401

LCD401

REM401

VR401

VR402

LED408

LED411

LED409

LED410

LED404

LED407

LED405

LED406

LED403

LED402

LED401

SW405

SW406

SW407

S409S408

S401

S414

S415S412

S411

S402

S413

S410

S403

S404

IC401

PMT1-01-05

+5V

+5V

DGND

DGND

-24V

+5V

-24V

DGND

AC3V8

P9V

AC3V8

+5V

+5V

+5V

CONTROL BOARD

DISPLAY BOARD

1

1

105

1

5

10

15 20

105

5

115

10

DIS CLT

GND

KEY 2

KEY 1

KEY 0

+9V

D3 LED

D2 LED

D1 LED

+5V

DIS CLT

GND

KEY 2

KEY 1

KEY 0

+9V

D3 LED

D2 LED

D1 LED

+5V

CLOCK

TIMER

ENTER

PLAY/PAUSE

STOP

UPDOWN

DISC3E

DISC2E

DISC1E

DISC1

DISC2

DISC3

POWER

1 NC

1

BASS/TREBLE

PMT1-01-05

PMT1-01-04

10 6V

13 GND

3 TUNER

2 CHANNEL 0
4 CHANNEL 1
6 VOL-LATCH
8 POWER CTL

15 P9V

5 VOL-DATA
7 VOL-CLOCK
9 DTS-CLOCK
11 DTS-PERIOD

16 DTS-DATA

DTS-STEREO

RDS-CLOCK

RDS-DATA

CLOCK_PWR

CD-POWER
SYS-MUTE
CD-SW_PUN

CD-BUCK

CD-CCE

CD-BUS3

CD-BUS2

CD-BUS1

CD-BUS0

CMF

CMR

DMF

DMR

EXTRA SW

HOME SW

CN2 SW

CN1 SW

O/C SW

FWD SW
RVS SW

12 -24V
14 3.8V

17 3.8V

E

E

E

E

E

E

E

E

E

E

DISPLAY/CTL ASSY

G

CN205

A

CN207

A

Q405 Q402

Q403
Q405

Q406 IC401

4.6 DISPLAY/CTL ASSY

234

XC-LA21

A

B

1

2

SIDE A

3

C

D

G

29

4

XC-LA21

Mark No. Description Part No.

Mark No. Description Part No.

5. PCB 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.
When ordering resistors,first convert resistance values into code form as shown in the following examples.

•

Ex.1 When there are 2 effective digits (any digit apart from 0),such as 560 ohm and 47k ohm (tolerance is shown by J=5%,
and K=10%).

560 Ω→56 × 10

47k Ω→47 × 103→ 473 ........................................................ RD1/4PU 4 7 3 J

0.5 Ω→R50 .....................................................................................RN2H

1 Ω→1R0 .....................................................................................RS1P

Ex.2 When there are 3 effective digits (such as in high precision metal film resistors).

5.62k Ω→ 562 × 10

Mark No. Description Part No.

LIST OF PCB ASSEMBLIES

STD. TUNER ASSY TUN-PMT1E-DL
CD ASSY CD--PMT1E
AUDIO ASSY PMT101000210
AUX ASSY PMT1LA100091
RECT ASSY PMT1LA100061

TRANS ASSY PMT1LA100071
DISPLAY/CTL ASSY PMT101000041

STD. TUNER ASSY

A

SEMICONDUCTORS

IC101(ICREVA-AFM-IF-MPX LA1837L) 010-101837-000A
IC102 (ICPLL TC9257P) 010-849257-001A
Q102,Q105 (TRANSISTOR 2SC1417) 008-314170-008A
Q113,Q115 (TRLPNPPWR 3CA8550) 008-685500-000A
Q120 (TR DTA114YS) 008-801144-000A

Q112,Q116,Q117 2SC1815
Q101,Q107 2SK161
D101-D104 1N4148
VD101,VD103 KV1561A-2
DZ103 (ZENER IN-5231B,HZ5C1) 011-010051-120A

1

→ 561 ........................................................ RD1/4PU 5 6 1 J

R 5 0

1 R 0

1

→ 5621 ......................................................RN1/4PC 5 6 2 1 F

Mark No. Description Part No.

C146 CEAT221M10
C125 CEAT330M16
C126 CEAT3R3M50
C127 CEAT470M16
C167,C168,C165,C166 CEAT4R7M50

C144,C137 CEATR47M50
C133,C121 CGCYX104K25
C119 CKCYB682K50
C132,C111,C106-C109,C104,C180 CKCYF103Z50
C186-C188,C101 CKCYF103Z50

C169,C170 CQMBA273J50

RESISTORS

RA402 (RESISTOR NETWORK 10kΩ) 001-229103-000A
Other Resistors RD1/4PU J

OTHERS

TC101 TRIMMER CAP CVN610-3 007-200610-000A
T107,T108 IFT PF120C 10mm 012-000120-010A
T105 IFT 4A-224R,10mm 012-002240-010A
T103 IFT 1A612R,10mm 012-006120-010A
T101 IFT 1A784R MW RF,10mm 012-007840-010A

K

K

COILS AND FILTERS

L102 (INDUCTOR 100µH) 018-010014-000A

L108 (BAD COIL #BA3534) 037-003534-100

CF102,CF101 019-000107-006A

CERAMIC FILTER SFE10

CF103 (CERAMIC FILTER LTU450G2) 019-000450-012A

CAPACITORS

C173,C174,C139,C103 (0.002µF) 003-020280-050
C177,C128,C129,C140,C185,C116 003-020380-050
C148,C150 (CERAMIC CAP 0.02µF) 003-020380-050
C154,C152 (CERAMIC CAP 24pF) 003-024010-050
C147 (CERAMIC CAP 0.04µF) 003-040380-050

C288,C183,C184 (CERAMIC 50pF) 003-050010-050
C135 (CERAMIC CAP 820pF/50V) 003-082110-050
C123 (POLY CAP 350pF/50V) 005-035100-000A
C113 CCCCH100D50
C190 CCCCH101J50

C101 CCCCH330J50
C156 CEAT100M50
C158 CEAT101M10
C171,C136,C141,C142,C145,C172 CEAT1R0M50
C131 CEAT220M25

30

T106 IFT FM DET 600TEAS 012-7NF803-007A
FE101 TUNER-FN&&&00STATION 042-104511-000A
P101 JP WIRE AWG26 110mm 051-675110-009J

CN101,CN102 EXT SP JACK 118-040102-002A
CN206 FFC CONN SOCKET 16P 135-006116-160J

CN8 FFC CONN 6232 30PINS 135-006232-300J
CN205 FFC CONN SOCKET 24P 135-FEBTVK-240J
CN207 FFC CONN SOCKET 17P 135-TOCB17-171J
CN13 HSG PMT1-3A PEC 2001H 136-03PMT1-B00J

CN11 HSG PMT1-14A PEC 2001H 136-14PMT1-B00J
CX101 CRYSTAL RESONATOR 009-607200-000A

CD ASSY

B

SHIELD WIRE SINGLE 053-103077-015J

(7.2MHz)

SEMICONDUCTORS

IC2 (TA2065F) 010-832065-000A
IC3 (IC MOTOR DRIVER TA2092) 010-832092-000A
IC1 (TC9284BF) 010-849284-000A
IC4 BA4558N-HT
IC5,IC6 TA7291S

XC-LA21

Mark No. Description Part No.

Q2 (TRLNPNPWR 3DA8050) 008-680500-000A
Q1 (TRLPNPPWR 3CA8550) 008-685500-000A
Q5 2SB562
Q6 2SC1815
D1-D3 1N4148
Z1 (ZENER IN-5232B 5.6V) 011-010056-120A

COILS

L1 (INDUCTOR 100µH) 018-010014-000A

L2 (BAD COIL #BA3534) 037-003534-100

CAPACITORS

C13,C19,C43 (CHIP CAP 24pF/50V) 003-624052-050A
C18 CCSRCH101J50
C57,C58 CCSRCH121J50
C52,C52,C59,C60 CCSRCH221J50
C15 CCSRCH270J50

C8 CCSRCH4R0C50
C37,C68,C12,C20 CEAT100M50
C34,C38,C40,C45,C61,C62,C54 CEAT101M10
C65 CEAT101M10
C42 CEAT102M10

C9 CEAT1R0M50
C27 CEAT220M25
C46,C48 CEAT221M10
C16,C31,C29 CEAT470M16
C72 CEAT471M10

C56,C55 CEAT4R7M50
C51 CEJQ101M10
C75 CEJQ470M16
C41,C4,C35,C22,C36 CGCYX104M16
C73,C47 CKCYF103Z50

C10,C11,C33,C74 CKSRYB103K50
C23,C24,C28,C64,C66,C69 CKSRYB104K16
C44 CKSRYB153K50
C26 CKSRYB223K50
C7,C6 CKSRYB332K50

C1 CKSRYB471K50
C21 CKSRYB472K50
C17,C30,C32,C3 CKSRYB473K16
C2 CKSRYB563K16
C14 CKSRYB682K50

Mark No. Description Part No.

AUDIO ASSY

C

SEMICONDUCTORS

IC201 BU4052BC
IC202 BH3854FS
Q201 2SC1815
D201 MTZJ4.7B
D202, D203 1N4148

D204–D206 (ZENER 05AZ4.7) 011-010051-121A
D209 MTZJ9.1B
D255 (RECTIFIER IN-4001B) 011-024001-000A

CAPACITORS

C203 CEAT221M16
C206, C204, C210, C211, C215 CEAT4R7M50
C225, C233, C281, C282 CEAT4R7M50
C207, C209, C222, C223, C224 CKCYB101K50
C212, C235 CEAT471M16

C213, C227 CEAT1R0M50
C214, C221, C228 CEAT220M25
C216 CEAT100M50
C217, C218, C230, C231 004-068350-100
(MYLAR CAP 0.068 uF/100V)

C219, C232 004-010310-100
(MYLAR CAP 0.047 uF/50V)
C220 CEATR22M50
C226 CEAT101M10
C229, C236, C237 CGCYF104Z25

C234 (MYLAR CAP 0.022uF/100V) 004-022310-100
C246 CKCYF473Z50
C272 CEAT2R2M50

RESISTORS

All Resistors RD1/4PU J

OTHERS

P3,P4 ROUND PIN 137-500001-000J
CN201 HEADER CTL 3 PINS 135-PHS030-030J
CN202 FFC CONN SOCKET 16P 135-006116-160J
CN204 HEADER 4 PINS 135-005267-090J

C25 CKSRYF333Z50

RESISTORS

R34 RD1/4PM100J
R41 RD1/4PU101J
VR2–VR4 FEO,TEB,TEO (100kΩ) 002-104085-102A
VR1 FEB (5kΩ) 002-472065-000A
Other Resistors RS1/16S J

OTHERS

CN6 FFC CONN 6232 30P 135-006232-301J
CN3 FFC CONN SOCKET 16P 135-TOCA16-160A
CN1 HSG 5CD1-4B JST 136-045CD1-201J
CN5 HSG PMT1-4A JST 136-04PMT1-250J
CN4 HSG 2CD9-6C (REV) 136-067238-205J

CN2 HSG PMT1-8A JST 136-08PMT1-250J
X1 CERAMIC RESONATOR 020-001693-000A

SOLDERING PIN 137-300000-002J
(16.93MHz)

AUX ASSY

D

SEMICONDUCTORS

IC901 BA4558DX
Q912, Q910, Q901 (DTA114YS) 008-801144-000A
Q903, Q902, Q908, Q909 2SD1468S
D901, D902 1N4148

CAPACITORS

C902, C909 CEAT1R0M50
C903, C910, C924, C925, C928 CKCYB101K50
C929, C930, C931 CKCYB101K50
C904, C906, C934 CEAT4R7M50
C905, C908 CEAT101M10

C907 (CERAMIC CAP 0.02µF) 003-020380-050
C921, C922, C933 CKCYF102Z50
C935 CEAT3R3M50

RESISTORS

All Resistors RD1/4PU J

31

XC-LA21

Mark No. Description Part No.

OTHERS

J201 CONN PIN 14 PINS 050-140060-200J
GND JP WIRE AWG22 140MM 051-275140-009J
J904 RCA JACK HSP-244V-01 118-000244-000A
J903 RCA JACK,HSP-202V-01 118-020202-000A

J905 POWER JACK DC 120-100470-000
CN204 HSG CD189D-3A 136-03189D-200J

RECT ASSY

E

CONN PIN 3 PINS 050-030160-200J

CAPACITORS

IC301 (IC REGULA BA09ST) 010-400009-001A
IC302 NJM78M56FA
Q302, Q303 (TRLPNPPWR 3CA8550) 008-685500-000A

D301-D304 011-020005-000A
D305 (ZENER IN-5237B,8.2V) 011-010082-120A

D307, D306, D310, D309, D313 011-024001-000A
D308 (ZENER BZX55C24 24V) 011-010240-120A

Q305, Q301 DTC114ES

(RECTIFIER IN-4001B)

CAPACITORS

C301, C317 CEAT221M16
C302 CEAT222M25
C303–C306, C308, C309 CKCYF103Z50
C307 CEAT101M35
C310 CEAT101M50

C318 CEAT102M16

RESISTORS

R304 RS1/2LMF221J
Other Resistors RD1/4PU J

OTHERS

P301 JP WIRE AWB22#1007 051-275120-009J
CN204 HSG PMT1-9A 136-09PMT1-C00J

CN301 HEADER 14 PINS 135-2001WS-140J
CN302 CONN PIN 12 PINS 050-120060-251J

JP WIRE AWG26#1007 051-675300-010J

Mark No. Description Part No.

OTHERS

JP WIRE AWG22#UL1672 051-265160-003J
JP WIRE AWG22 YELLOW 051-265180-010J

F306 FUSE HOLDER 7900 550-790000-000J

DISPLAY/CTL ASSY

G

AC CONTACT TERMINAL 137-400001-000J

SEMICONDUCTORS

IC401 PDA068A
Q402–Q405 DTC114ES
Q406 2SC1815
D402, D403, D401, D404 1N4148
LED401-LED403 (LED-Y-3MM) 110-033045-013A

LED412 (LED-R-3MM) 110-033040-013A
LED404–LED411 (LED-BL-3MM) 110-033162-003A

SWITCHES

S401–S404, S408–S415 021-114165-000A
SW405–SW407 021-114165-000A
(F021-KHH902-001) TACT SW

CAPACITORS

C401, C403, C497, C498, C499 CKCYF103Z50
C412, C413, C421, C410, C411, C500 CKCYF103Z50
C402, C404 CEAT1R0M50
C405, C495 CGCYX104M16
C406 CEAT100M50

C407 (ELECT CAP 47000MFD/5.5V) 006-747300-05CA
C414 CEAT220M25
C415, C409, C422 CKCYF473Z50
C416, C417 CCCCH220J50
C419, C418 (CERAMIC CAP 30pF/50V) 003-430050-050

C420, C408 CEAT101M10

RESISTORS

RA404-RA406 001-220104-000A
(RESISTOR NETWORK100K)
RA403 (RESISTOR NETWORK EXB) 001-229103-000A
VR401,VR402 (ROTARY ENCORDER) 030-H12203-204A
Other Resistors RD1/4PU J

TRANS ASSY

F

SEMICONDUCTORS

F304, F305, F307 124-010010-002A
F303 124-035010-000A
D311 (RECTIFIER IN-4001B) 011-024001-000A

(IC MICRO FUSE 251001 1A)
(IC MICRO FUSE #25103.5-TS2 3.5A)

COIL

L301 AC LINE FILTER 019-500160-000A

SWITCHES AND RELAYS

SW301, SW302 025-230041-000A
RL301 (RELAY 9V SDT-S-109LMR) 128-090109-000A

SLIDE SW (VOLT.SELECTOR 117-220V)

CAPACITORS

C315, C316 003-010320-250A

32

(CERAMIC CAP 0.01 uF/250V)

OTHERS

CN15 CONN PIN 10 PINS 050-100050-201J

JP WIRE AWB22#1007 051-275120-009J
REM401 111-000638-000A
(REMOTE/CONTROL PHOTO RECEIVER)
LCD401 VACUUM FLUORESCENT 115-000920-000A

CN401 FFC CONN SOCKET 24P 135-FESTVK-240J
CN404 FFC CONN SOCKET 17P 135-TOCB17-171J
X401 CRYSTAL RESONATOR 009-332768-100A

(32.768kHz)
X402 CERAMIC RESONATOR 020-000800-000A

(8MHz)

XC-LA21

6. ADJUSTMENT

6.1 CD SECTION

CD ASSY is taken out according to the procedure of DISASSEMBLY. And, please adjust the part CD after connecting connectors.

6.1.1 PREPARATIONS

(1) Jigs and Measuring Instruments

CD TEST DISC

(YEDS-7)

screwdriver

(large)

(2) Necessary Adjustment Points

When

Exchange
PICKUP

Precise

screwdriver

Dual-trace

oscilloscope

(10 : 1 probe)

Adjustment Points

1, 2, 3, 4

screwdriver

(small)

Pages 35 and 36

screwdriver

(medium)

Exchange
CD ASSY

Exchange
SERVO MECH ASSY

1, 2, 3, 4

1, 2, 3, 4

Pages 35 and 36

Pages 35 and 36

33

XC-LA21

C

6.1.2 Adjustment

(1) Adjustment Locations

CD ASSY

SIDE A

L1

R73

R72

BOARD

CD+5V

W30

1

GND

SLT

FM-

FM+

DM-

DM+

C48

RED

GNDM

VR2

W24

C22

W8

CD+9V

W9

20 15

C4

W15

TEB

C20

C16

C27

GNDCD

W25

W26

W14

C35

W11

TEO

C65

C47

W19

W21
VR3

C68

W12

1

1

W13

GNDCD

C46

D1

CN4

W1

5

W2

W3
W4

W5

W6

W7

C36

GNDM

105

VREF

3

W23

TSO

2

Q1

C39

R34

W10

IC3

1

C29

W17

C31

R2

R1

W18

W20

FEO

C12

W22

GNDCD
CD+5V

GNDCD

W28

FEO

VR4

4

C34

VR1

W16

GNDCD

RFO

W27

C38

FEO

VR4
(FOCUS OFFSET)

VREF

VR1
(FOCUS BALANCE)

VR2

C9

(TRACKING BALANCE)

RFO

FEO

VR3
(TRACKING OFFSET)

TSO

34

Fig. 1 Adjustment Locations

(2) Check and Adjustment

1. Focus Offset (FEO) Adjustment

FUNCTION : CD

CD in stop mode

XC-LA21

DC voltage
0 ± 10 mV

VR4

Focus Offset

Oscilloscope

DC Mode
V : 50mV/div
H : 1mSec/div

START

FEO
VREF

1
4

CD ASSY

Player

2. Tracking Offset (TEO) Adjustment

FUNCTION : CD

CD in stop mode

Tracking Offset

VR3

Probe

GND

DC voltage
0 ± 10 mV

Oscilloscope

DC Mode
V : 50mV/div
H : 1mSec/div

START

TSO
VREF

1
4

CD ASSY

Player

Probe

GND

35

XC-LA21

3. Tracking Balance (TEB) Adjustment

FUNCTION : CD

Keeps pushing
the FF button.

TEST DISC

START

TSO
VREF

Track No. 1
of YEDS-7

PLAY

2
4

CD ASSY

Tracking Balance

VC is made a center.

A : B symmetry ADJ

Player

VR2

Probe

A=B

A

B

Oscilloscope

DC Mode
V : 100mV/div
H : 1mSec/div

GND

0V
(VREF)

NGOKNG

4. Focus Balance (FEB) / eye pattern (RF level) Adjustment

FUNCTION : CD

TEST DISC

START

RFO
VREF

Track No. 1
of YEDS-7

PLAY

1
4

CD ASSY

VR1

Focus Balance

Player

Probe

Obtain maximum 3T-level of EYE-pattern.

3T

maximum

Oscilloscope

AC Mode
V : 200mV/div
H : 0.5µSec/div

GND

1.2Vp-p

36

XC-LA21

7.1 GENERAL INFORMATION

7.1 DIAGNOSIS

7.1.1 TROUBLE SHOOTING

1. Troubleshooting 2. Cannot hear the sound of relay when
power cord plug in

Please Plug in POWER cord

YES

A

Can you hear the

sound of Relay ?

YES

Can you hear the

sound of CD Changer Mechanism

or clamper movement ?

YES

Please press the POWER key to turn the

POWER ON. Adjust the volume level.

YES

Please change to TUNER mode

Is TUNER OK?

YES

Please change to CD mode

Is CD OK?

YES

Please change to AUX mode

NO

NO

NO

NO

A

Is Power Supply of 5V

(pin 8 of CN301) supply ?

YES

B

Are CLOCK CLT (pin 6 of

CN301) and pin 80 of IC401

high level ?

YES

Is the RES pin

(pin 11 of IC401) has a low

pulse input while the power cord plug in ?

Or the RES pin return to high

C

Are the XT1 and XT2 (pin 12

and 13 of IC401) oscillated in

D

finally ?

YES

32.768kHz ?
YES

Please check the fuse
F306, IC307 and the input
voltage pin of IC302.

Please check the corres­ponding control circuit,
transistor Q301 and Q302.

Please check the corres­ponding reset circuit,
transistor Q406.

Please check the corres­ponding clock generating
circuit (X401).
And SYS-STOP pin (pin 26
of IC401) should be in 5V.

NO

NO

NO

NO

Is AUX OK?

YES

OK

NO

E

Are the CF1 and CF2 (pin 15

and 16 of IC401) oscillated in

8MHz ?

YES

The IC401 damaged.

Please check the corres­ponding clock generating
circuit (X402).

NO

37

XC-LA21

3. Can you hear the sound of CD Changer
Mechanism or clamper movement
when power cord plug in

Are the pin 2 of IC5 and

IC6 have 8V supply ?

YES

Is pin 8 of IC6 (VREF) in

5.3V and pin 8 of IC5 (VREF)
in 5.4V ?

NO

Please check

the waveform of pin 1(RIN)

and pin 9 (FIN) of IC6 and IC5 according

to the corresponding operation?

Is it correct ?

YES

Check the corresponding
8V power supply.

Please check the corres­ponding resistors R67, R28,
R33 and R68.

Please check the connector
of CN8 and CN6, CN4 and
CD MECHA..

NO

YES

NO

4. Tuner troubleshooting

CB

Have noise come out ?

YES

Do pin 12 (VDD) of IC102

have 5V ?

YES

Is the waveform

of pin 3, 4 and 5 of IC102

correctly when the tuner is in scan

the frequency ?

YES

NO

NO

Please check the pin 1 of
CN11 in 8V and the corres­ponding power circuit on
the Tuner board. DZ103,
L102, R177.

NO

Please check the connec­tion of the pins 3, 4 and 5
of IC102 to IC401.

E

the waveform of pin 3 (OUT-) and

Please check

pin 7 (OUT+) of the IC5 and

IC6 ? Is it correct ?

YES

The Changer broken.

NO

The IC5 or IC6 broken.

Do pin 6 (TUN-) of IC102

have a 0V ?

YES

Do the pin 8 (VCC) of

IC101 have 8V ?

YES

Please check the FE101.

NO

Please check the pins 1
and 2 of IC102 that have

7.2MHz clock signal.

NO

Please check the corres­ponding power circuit, Q113
and R157.
The connection CN11.

38

XC-LA21

5. CD troubleshooting • The total track number is incorrectly
displayed

D

Is MECHA ERROR displayed ?

NO

Open the CD tray by pressing "CD1/2/3 EJECT".
Place CD on the tray and close the tray by selecting
the corresponding "CD1/2/3 EJECT" key to close
the CD tray.

After the CD

TOC is read, are the

number of the total tracks and playing

time displayed correctly ?

YES

Please press CD PLAY/PAUSE key or
CD SELECT key of DISC No.

Do the CD playing and the

CD time display correctly ?

YES

NO

NO

B

Do the CD head sled to the inner ?

YES

Do the laser radiate normally ?

YES

Do the lens vertical motion ?

YES

Do the disc start to spin ?

YES

Do the head move to outward slowly ?

Please check 3P, 4P of
CN4 and 9P, 11P of IC3.

Please check PICK UP
and Q1, L1, D1, R34.

Please check the
connection CN3 and 5P,
2P, 4P of IC3.

Please check the
connection CN4 and 8P,
9P, 11P of IC3.

NO

NO

NO

NO

NO

YES

Is the audio signal come

out on the speaker ?

YES

Please push FWD key or REW key

Can you smoothly select the music ?

YES

OK

Please tune the CD again.

Please check the CD
sleding circuit and tune the
CD again.

NO

NO

YES

E

Please tune the CD servo circuit

Please check the
connection CN3 and 5P,
2P, 4P of IC3.

39

XC-LA21

6. No audio signal come out on speaker

E

and 10 (A) of the IC201. Is the value is

Check the pins 9 (B)

corrected according to

Table 1

YES

Do the corresponding Audio input

signal on IC201 correctly ?

YES

Do the audio output from the pins

3 and 13 of IC201correctly ?

YES

Is the pin 8 (MUTE) of CN202

high ?

NO

Is the pin 3 of CN204 in 8V ?

Please check the corres­ponding circuit and connec­tion.

Check the connection of
the audio signal input.

The IC201 broken.
Please check 16P DC
SUPPLY.

Please check the connec­tion of the CN202 and CN206
CN205 and CN401.

NO

NO

NO

YES

NO

Is the pins 18, 19

and 20 of the IC202 had correct

waveform when the volume

is adjusting ?

Please check the corresponding

circuit of the amplifier.

Table 1

(B) (A)

Channel

Power OFF 0 0
Tuner 0 1
CD 1 0
AUX 1 1

40

YES

YES

Pin 9 of IC201 Pin 10 of IC201

Please check IC301 and
its corresponding circuit.

NO

Please check the corres­ponding circuit, pins 8, 9
and 25 of IC401 and its
connection.

7.1.2 DISASSEMBLY/ASSEMBLY

XC-LA21

(1) Main Body Section

× 2

1

Side Panel L
(Remove as well as Side Panel R)

× 2

1

× 2

1

× 2

1

2

Remove Side Panel R
by sliding to a rear side.

3

6

STANDBY/ON

Flat Blade Screwdriver

CD

OPEN/CLOSE

Tray Panel Set

11

11

12

Unhook

Front Unit

13

Unook

Drawer

12

× 2

11

× 2

or

-1

6

-2

6

9

8

Unook

× 2

7

10

Unook

12

11

Unhook

5

Top Panel

Side Panel R

5

4

Unhook

5

15

15

15

4

CD MECHA.

15

14

× 2

(Remove as well as Side R)

16

16

Draw out the CD MECHA

17

by pushing the hook.

41

XC-LA21

(2) CD MECHA.

CAUTION

•

If Tray Panel Set is not detached when the CD MECHA. is
repaired, the CD MECHA. cannot be removed from the main
body of the product.
When Drawer was not able not to open and shut by some
something wrong's (The power supply does not enter, etc.)
occurring, and remove Tray Panel Set, Slider 2 of the CD
MECHA. is moved from the ditch of the chassis on the bottom
side of the product with a minus driver and Drawer is drawn out.
Afterwards, please remove Front Unit after removing Tray Panel
Set .

7

Pickup Unit

CD MECHA.

7

1

Carriage 300

Lift up

8

9

2

Bottom Side

2

3

×2

4

1

8

Bottom Side

Clamper is raised and
Carriage 300 is taken out.

Ass'y Clamper S0

11

3

×2

6

Drawer is drawn out.

42

Bottom Side

10

Disconnect the Hook

×2

12

12

×2

Pickup Unit

5

6

7

Caution for Disassembly/Assembly of CD MECHA.

1. As for the distinction method of Carriage100, 200, and 300,
Switch distinguishes the shape of the projection part on its back.
Please confirm the number seal pasted to the surface of
Carriage and the projection shape of the figure below when you
exchange it.

XC-LA21

2. Please do not disassemble Assy Holder L, R and the inside of
and Drawer, and do not disassemble Assy Gear Drive which
connects Assy Holder L with R.
(The position match of each gear is necessary)

3. Please do not lose the gear (Bevel Gear 4 and Gear Idler A) not
fixed while put in the axis.

Bevel Gear 4

Drawer

Carriage 100

Method of distinguishing the back of Carriage.

Method of distinguishing surface of Carriage.

Carriage 200 Carriage 300

Assy Holder R

Carriage 1001
Carriage 2002
Carriage 3003

Assy Holder L

Gear Idler A

4. Carriage 300 is put in the Chassis side, and please put in the
Drawer side without fail in order of Carriage 100 and 200.

Assy Gear Drive

Carriage 300

Chassis

Carriage 100, 200

Drawer

43

XC-LA21

7

Drawer

2

Bottom Side

7

Disassembly of Ass'y Motor CRG S and
Ass'y Motor DRW S

1

×2

1

×2

1

2

2

Drawer

3

Disconnect
the Hook

×3

2

Ass'y Motor
CRG S

Ass'y PC Board A

Ass'y Motor
DRW S

4

Belt

3

4

×2

Belt

3

4

×2

44

7

Chassis

The loss of
this gear is
noted.

1

Bottom Side

2

Carriage 300

Lift up

XC-LA21

7

1

Lever 2

9

Arm Stopper B

Lifter

Spring

8

Spring

Ass'y Clamper S0

4

3

Disconnect the Hook

5

6

Lifter

Spring

10

Belt

Ass'y Slider 2

11

Hook

45

XC-LA21

7

Disassembly of Carriage 100, 200

13

Hook

12

Slider 1

Hooks

The loss of
Bevel Gear
is noted.

Drawer

The back of Drawer

7

Assembly of Carriage 100, 200

(Carriage 100 is No.1 carriage. Carriage 200 is No.2 carriage.)

3

1

2

Carriage 100

4

Carriage 200

14

Slider 4

After Bevel Gear is turned counterclockwise, and five

1

rotations are made after lower side Pinion begins to turn,
stops in the place where its rotation stopped.

Black Cam

Mark • of Pinion of both upper and lower
must be a direction of black Cam.

The first teeth of
Carriage are put
between the pin
and the pin lower
side Pinion.

2

Upper Pinion

Lower Pinion

The bottom of
Carriage is hit
under right Stopper
and puts.

Carriage 200

1

Bevel Gear

3

46

Carriage
200

XC-LA21

• Notes of procedure .

FRONT side

The other side of the side applied by of Carriage is lightly

4-1

pushed.
Puts Carriage 100 on Carriage 200 which applies by .

4-2 4-1

Be careful about notes by at this time.

3

Hang Carriage only here of Pinion.

4

Carriage 200

3

3

8 9

,

9

7

Carriage 200 is lightly
lifted by the finger.

When Carriage 100 drops below, Carriage 200 is lightly lifted

7

by the finger.
Note : Lift it horizontally when you lift Carriage.

Carriage inclines when it is not the horizontal, and
mechanism locks.

Bevel Gear is turned clockwise (direction of a rear side from

8

a front side) like the state of .

7

9 Carriage 200 lifts up. And, when the movement is started

Carriage 100 to the direction of a front side, separates the hand
which lifted Carriage 200.

10

Keeps turning Bevel Gear clockwise (direction of a rear side
from a front side) until Carriage 100 bumps to the wall on
a front side.

Bevel Gear is turned clockwise.

5

(direction of a rear side from a front side)

5

6

Carriage 200 moves to a front side.

6-1

Bevel Gear is turned as it is clockwise.

6-2

(direction of a rear side from a front side)
Carriage 100 drops below.

6-3

Carriage 100

The position of a right and left, black cam is matched while

11

confirming it from the table side of Drawer.

Surface of Drawer

Meanwhile, Mark of right and left,
black Cam is matched.

Cam Mark Cam Mark

11

47

XC-LA21

7

Assembly of Drawer and Chassis

The following work is done before Drawer is put on Chassis.
(1) It is confirmed that Carriage 300 is clamped, and Clamper has

fallen.

(2) It is confirmed to Drawer to be built in neatly in order of Carriage

200 and 100.

(3) Arm Stopper B is moved horizontally (inside) as shown in the

figure below.

(4) Pulls Slider 2 until the lock comes off to the direction of ta front

side.

Note : Do not lift Arm Stopper B for above when you move Arm

Stopper B.
There is a possibility to bend the spring when Arm Stopper B
is lifted, and the spring bends. And, when Arm Stopper B
becomes floatage feeling, Drawer is caught.

A

B

5

Its right side is slowly lowered up to the angle by which Bevel
Gear can do in the slide while doing Drawer back and forth by
about 5mm.

4

3

5

Coming off

Arm
Stopper
B

in the spring
is noted.

A

Slider 2

Coming off of
a black gear
is noted.

Direction of front

1

This part of Drawer is put on Chassis like the arrow.

B

10mm is opened.

Drawer

The lock
comes off.

Lac teeth

2

Gear Idler A (black)

When peeps from the inside of Drawer when the receiving part

6

of Gear is fixed into the concave part of Bevel Gear, the place
where it is fixed is comprehensible.

Drawer

Bevel Gear

6

1

Chassis

2

The lac teeth and Gear Idler A are matched, and it is pressed
under the diagonal lightly.

3

Right this side of Drawer is lifted.

4

Drawer is moved back and forth, and stops Drawer with the
point which it enters left.

48

Concave of Bevel Gear

8

Receiving
part of Gear

7

Chassis hook

XC-LA21

7.2 PARTS

7.2.1 IC

• The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams.

LC876564 (DISPLAY/CTL ASSY : IC401)

• System Control IC
Pin Function

•

.ONemaNniPO/InoitcnuF

10GOJNCFI tupnIreggoJnoitcnuF
21GOJNCFI tupnIreggoJnoitcnuF
3ATADT-STDO/InipATADnoitacinummocrenuT
4DOIREPLLP-STDO nipDOIREPnoitacinummocrenuT
5KCOLCLLP-STDO nipKCOLCnoitacinummocrenuT
60GOJLOVI tupnIreggoJemuloV
71GOJLOVI tupnIreggoJemuloV
8KCOLC-LOVO nipKCOLCnoitacinummocCIemuloV
9ATAD-LOVO nipATADnoitacinummocCIemuloV

01)CN(
11TESERInipteserwolUCM

21)KLCWOL(1TX

31)KLCWOL(2TX
411SSV

51)KLCNIAM(1FC

61)KLCNIAM(2FC
711DDV
810YEKI )golanA(tupnIdraobyeK
911YEKI )golanA(tupnIdraobyeK
022YEKI )golanA(tupnIdraobyeK
12YRTNUOC-STDI nipnoitpognittesyrtnuoCrenuT
22HTGNERTS-STDI htgnertSlangiSrenuT
320LENNAHCO tuptuOlennahCoiduAlortnoC
421LENNAHCO tuptuOlennahCoiduAlortnoC
52HCTAL-LOVO nipHCTALnoitacinummocCIemuloV
62POTS-SYSI nipnoitcetedrewoPoN

72)CN(
82REWOP-SYSO ylppusrewopoiduaehtlortnoC
92ETOMERI niptupnirevieceretomerder-arfnI

03)1DG(DFVO tigidrellortnocyalpsidDFVroftuptuO

13)2DG(DFVO tigidrellortnocyalpsidDFVroftuptuO

23)3DG(DFVO tigidrellortnocyalpsidDFVroftuptuO

33)4DG(DFVO tigidrellortnocyalpsidDFVroftuptuO

43)5DG(DFVO tigidrellortnocyalpsidDFVroftuptuO

53)6DG(DFVO tigidrellortnocyalpsidDFVroftuptuO

63)7DG(DFVO tigidrellortnocyalpsidDFVroftuptuO

73)80G(DFVO tigidrellortnocyalpsidDFVroftuptuO

83)90G(DFVO tigidrellortnocyalpsidDFVroftuptuO

93)81S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

04)71S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

14)61S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

24)51S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

34)41S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

44)31S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

54)21S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO
643DDV

74)11S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

−

−

−

−

−

−

−

−

−

desutoN

)tupnI(zHK867.23kcolC-buS

)tuptuO(zHK867.23kcolC-buS

dnuorG

)tupnI(zHM8kcolcniaM

)tuptuO(zHM8kcolcniaM

ylppusrewopV5

desutoN

)V5+(ylppuSrewoP

49

XC-LA21

.ONemaNniPO/InoitcnuF

84)01S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

94)90S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

05)80S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO
15PV

25)70S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

35)60S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

45)50S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

55)40S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

65)30S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

75)20S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

85)10S(DFVO tnemgesrellortnocyalpsidDFVroftuptuO

95)CN(

06)CN(

16)CN(

26)CN(

36)CN(
46OERETSLLP-STDInipoeretsnirenuT
56WS-SVRI hctiwsnoitisopesreveRredilS-regnahC
66WS-DWFI hctiwsnoitisopdrawroFredilS-regnahC
76WS-LC/POI hctiwstcetedesolc/neporewarD-regnahC
86WS-1NCI hctiws1rebmunegairraC-regnahC
96WS-2NCI hctiws2rebmunegairraC-regnahC
07WS-EMOHI hctiwsnoitisoPemoHegairraC-regnahC
17WS-ARTXEI hctiwsnoitisoPartxEegairraC-regnahC
274DDV
37RMDO lortnocesreveRrotoMrewarD
47FMDO lortnocdrawroFrotoMrewarD
57RMCO lortnocesreveRrotoMegairraC
67FMCO lortnocdrawroFrotoMegairraC

77)CN(

87)CN(

97)CN(
08REWOP-KLCO lortnoCrewoPniaM
18DEL-1DO lortnocDEL1DClenappoT
28DEL-2DO lortnocDEL2DClenappoT
38DEL-3DO lortnocDEL3DClenappoT

48)CN(
580SUB-DCO/I0SUBATADCIovreSDC
681SUB-DCO/I1SUBATADCIovreSDC
782SUB-DCO/I2SUBATADCIovreSDC
883SUB-DCO/I3SUBATADCIovreSDC
982SSV
092DDV
19ECC-DCO nipelbane-pihCCIovreSDC
29KCUB-DCO nipkcolCsuBCIovreSDC
39NIUP_WS-DCI hctiwSrennIpukciPovreSDC
49ETUM-SYSOgnituMmetsyS
59REWOP-DCO niplortnoCrewoPDC
69ATAD-SDRI nipATADnoitacinummocCISDR
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7.2.2 DISPLAY

115-000920-000A (HNA-09SS20) (DISPLAY CONTROL ASSY : LCD401)

• FL DISPLAY

Anode Connection

XC-LA21

Pin Connection

51

1

XC-LA21

7.3 REMOTE CONTROL UNIT

7.3.1 SCHEMATIC DIAGRAM

A

B

23

4

C

D

52

1234

1

234

XC-LA21

7.3.2 PCB DIAGRAM

Display
/Clock

Snooze Sleep Timer Dimmer

Mono

CD 1

CD 2

CD 3

Pgm

Repeat Return

Digest

LED801

Tuner Aux CD

Slow

Power

Play/
Pause

Play
Mode

Stop

321

6

C

PBCRandom

Step

F.BF.F

5

0

10/0

Time
Sarch

4

789

S1

Power

S46 S45

S3

Title

S7

4

Clear

Return

Angle

Menu

<-

S12

1

2

S20

0

S28

Setup

S32

< Slow

Open/Close

S44

S4

Enter ->

S13

S21

S25S24

On/Off Subtitle

S29

S8

V

V

Subtiitle

Slow >

S43

Zoom

S10

S11

S14

3

S18S17S16

65

S22

987

S26

S30

S34S33

Marker

A

S2

S5

S6

Mute

S9

B

S15

Disply

S19

Repeat

S23

A <> B

S27

Prog

S31

Audio

S35

Vol +

Tre

B-

Enter

Vol -

Bass

S38

Pause

B+

PMT1-01-08

C802

C801

1

IC801

X801

12

IC801

D801

D802

Q801

R801

D803

24

13

C803

S36

<< Search

Stop

S41

PMT1-01-08

Search >>

S39

Skip >><< Skip

S37

S40

Play

S42

C

D

SIDE ASIDE B

53

1

2

3

4

XC-LA21

8. PANEL FACILITIES AND SPECIFICATIONS

8.1 PANEL FACILITIES

Front Panel

7

1

8

9

2

10

3

11

4

54

5

12

13

6

3 COMPACT DISC MULTI CHANGER

LA21

STEREO CD TUNER

XC-LA21

1 CD SELECT 1 / 2 / 3 – Use to select CDs, and

start playback if there's a disc loaded. Also
switches the system on if it was in standby.

2 STANDBY / ON – Press to switch on or into

standby.

3 BASS / TREBLE – Use to adjust the tone of the

sound.

4 Fluorescent display
5 FUNCTION – Turn to select the source to listen to:

CD, radio or an external component.

6 Disc tray
7 Disc indicators – Indicate whether a disc is

loaded in that disc tray (blinks while loading; lights
when loaded)

8 OPEN / CLOSE 0 – Use to open or close indi-

vidual disc trays. Also switches the system on if it
was in standby.

9 1 / 4 / TUNING – – When using the CD

player, use to scan backwards, or skip back
tracks. When using the radio, use for tuning and to
select preset stations.

¡ / ¢ / TUNING + – When using the CD
player, use to scan forwards, or skip forward
tracks. When using the radio, use for tuning and to
select preset stations.

10 7 – Press to stop a CD playing. Also cancels auto

scan tuning.

11 38 – Press to start or restart a CD playing, or

pause a disc that's already playing. Also switches
the system on if it was in standby.

12 VOLUME – Turn to adjust the volume.
13 DISPLAY / CLOCK – Press to change the CD or

station information shown in the display. Also use
to set/display the clock.

TIMER – Use to set the wake up.
ENTER (DEMO) – Use to save a radio station

preset; set the clock or timer. Also switches the
demo on/off.

Display

1 2 3 4 5 6 7 8

DISC

ALL SINGLE RPT RDM PGM

1 2 3

1 Current disc indicator – Shows the current disc

(blinks when paused).

2 ALL – Lights in All disc play mode (all CDs

loaded will play).

3 SINGLE – Lights in Single disc play mode (only

the currently selected disc will play).

4 RPT – Lights in repeat play mode.
5 RDM – Lights in random play mode.
6 PGM – Lights when the track order has been

programmed.

9

KHz

10

MHz

1112

7 – Lights when the wake up timer has been

set.

8 – Lights when the sleep timer has been set.
9 – indicates the strength of the broadcast

signal.

10 kHz / MHz – Indicates an FM frequency (MHz) or

an AM frequency (kHz).

11 – Indicates whether you’re listening to

the radio in stereo or mono.

12 Character display

55

XC-LA21

Remote Control Unit

1 2

AUXCD

–

7

10

4¢

123

456

–

15 16

789

10/0 >10 C

19

STANDBY/ON

FM/AM

6

ENTER

7

RANDOM REPEAT

DISPLAY

/CLOCK

SNOOZESLEEPTIMERDIMMER

MONOTUNER

CD 1

CD 2

CD 3

PGM

11

17

18

3

–

20

–

14

1 STANDBY/ON – Press to switch the unit on or

into standby.

2 DISPLAY/CLOCK – Press to change the informa-

tion shown in the display.

3 DIMMER – Use to change the brightness of the

display.

4 TIMER – Press to set the wake up timer.
5 SLEEP – Press to set the sleep timer.

6

6 SNOOZE – Press for snooze function when using

the wake up timer.

7CD – Press for CD mode. Also switches the

system on if it was in standby.

8AUX – Press for auxiliary mode. Also switches the

system on if it was in standby.

9 FM/AM TUNER – Press for tuner mode, and to

switch between AM and FM. Also switches the
system on if it was in standby.

10 MONO – Press to hear a stereo FM broadcast in

mono (improves the sound quality).

11 6 – Press to start or restart playback, or pause

a disc that’s already playing.

12 4 and ¢ – When listening to CDs, press to

skip back/forward tracks; press and hold for fast
reverse/forward play. When listening to the radio,
use for turning and use to tune into stations and
select preset stations.

BASS

REMOTE CONTROL UNIT

U

M

L

O

V

+

PLA Y MODE

–

V

O

M

L

U

13 ENTER – Use to save a radio station preset; set

–

E

E

21 23

TRE

the clock or timer.

14 7 – Press to stop playback. Also cancels auto

scan tuning.

15 Number buttons – When playing CDs, use to

select track numbers. When listening to the radio,
use to select preset stations.

16 C – Press to clear a CD playlist.
17 CD buttons – Press to select discs. Also switches

the system on if it was in standby.

18 PGM – Press to start programming a CD playlist.
19 RANDOM – Press to start random CD playback.
20 REPEAT – Use to select the repeat mode (1-

track, current disc or all-disc).

21 VOLUME +/– – Use to adjust the volume.
22 BASS / TRE – Use to adjust the tone (bass and

treble) of the sound.

23 PLAY MODE – Use to select single disc play, or

all-disc play.

56

8.2 SPECIFICATIONS

XC-LA21

Amplifier Section (M-LA21)

Continuous Power (RMS) ................... 100 W + 100 W

(1 kHz, THD 10%, 8Ω)

Peak Music Power Output .............................. 2500 W

FM T uner Section

Frequency Range ............................... 87.5 – 108 MHz

Antenna ........................................... 75 Ω, unbalanced

AM T uner Section

Frequency Range

............................... 531 kHz – 1,602 kHz (9 kHz step)

............................. 530 kHz – 1,700 kHz (10 kHz step)

Antenna ................................................. Loop antenna

Compact Disc Player Section

Type ................... Compact disc digital audio system

Usable discs .......................................Compact discs

Channels ..................................................... 2 (stereo)

Frequency Response ............................20 Hz–20 kHz

Wow and Flutter...................... Limit of measurement

(0.001%) or less (EIAJ)

Power Section & Miscellaneous

Power Requirements

................ AC 110-127/220-230/240 V (switchable),

50/60 Hz
Power Consumption (ON mode)

(Total including M-LA21) ......... 538 W

Power Consumption (Standby mode) ............. 1 W

Dimensions

Stereo CD tuner

.............................. 160(W) x 176(H) x 323.5(D) mm

Stereo power amplifier

................................. 160(W) x 176(H) x 315(D) mm

Weight

Stereo CD tuner ............................................ 4.0 kg

Stereo power amplifier ................................. 5.1 kg

Accessories

• Operating instructions.......................................... 1

• Remote control unit .............................................. 1

• FM wire antenna .................................................... 1

• AM loop antenna ................................................... 1

• AAA' size R03 batteries ........................................ 2

• RCA audio cable.................................................... 1

• Power-cord plug conversion adaptor

(Except Argentinian model).................................. 2

Speaker System:

Enclosure ....................... Bass-reflex bookshelf type

System....................................... 16 cm 3-way system

Loudspeakers

Woofer.......................................... 16 cm cone type

Mid-range.................................... 5.2 cm cone type

Tweeter ........................2.4 cm ceramic dome type

Nominal impedance .............................................. 8 Ω

Frequency response ....................... 40 Hz–20,000 Hz

Maximum input .................................................. 100 W

External dimensions .. 220(W) x 340(H) x 270(D) mm

Weight ............................................................... 3.8 kg

NOTE: Specifications and design subject to

possible modification without notice, due to
improvements.

57