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Pioneer xc-la21 Service Manual

Stereo cd tuner
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3 7 63 1515 0
STEREO CD TUNER
XC-LA21
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type
XC-LA21
DBDXCN
DDXCN/AR
TE
L 13942296513
¶ System Component Table
Component
COMPACT MINI COMPONENT
STEREO CD TUNER
STEREO POWER AMPLIFIER
SPEAKER SYSTEM
CONTENTS
1. SAFETY INFORMATION ....................................... 2
4. PCB CONNECTION DIAGRAM ........................... 20
5. PCB PARTS LIST ................................................ 30
6. ADJUSTMENT ..................................................... 33
www
.
PIONEER CORPORATION
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
http://www.xiaoyu163.com
Model
Power Requirement
AC110-127V/220-230/240V
AC110-127V/220-230/240V
Model
X-LA21
XC-LA21
M-LA21
S-LA21
x
ao
y
i
4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
http://www.xiaoyu163.com
8
3 COMPACT DISC MULTI CHANGER
LA21
STEREO CD TUNER
Q Q
3
6 7
1 3
Service manual
RRV2370
RRV2392
RRV2393
RRV2394
7. GENERAL INFORMATION ................................ 37
7.1 DIAGNOSIS .................................................. 37
7.1.1 TROUBLE SHOOTING ........................ 37
7.1.2 DISASSEMBLY/ASSEMBLY ................ 41
7.2 PARTS .......................................................... 49
7.2.1 IC .......................................................... 49
7.2.2 DISPLAY ............................................... 51
7.3 REMOTE CONTROL UNIT .......................... 52
u163
.
2 9
9 4
2 8
The voltage can be converted by
the following method.
With the voltage selector
With the voltage selector
1 5
0 5
8
2 9
9 4
Remarks
This manual.
m
co
T - IZK OCT. 2000 Printed in Japan
9 9
ORDER NO.
RRV2392
2 8
9 9

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  • Page 1: Table Of Contents

    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 T –...

  • Page 2: Safety Information

    LABEL CHECK IMPORTANT L 13942296513 THIS PIONEER APPARATUS CONTAINS LASER OF CLASS 1. SERVICING OPERATION OF THE APPARATUS S H O U L D B E D O N E B Y A S P E C I A L L Y INSTRUCTED PERSON.

  • Page 3: Exploded Views And Parts List

    XC-LA21 3 7 63 1515 0 2. EXPLODED VIEWS AND PARTS LIST • NOTES: Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. • mark found on some component parts indicates the importance of the safety factor of the part.
  • Page 4 XC-LA21 3 7 63 1515 0 2.2 EXTERIOR SECTION DDXCN/AR Only 26,61 DDXCN/AR Only L 13942296513 Refer to section "2.3 CD MECHA. SECTION". u163 http://www.xiaoyu163.com...

  • Page 5: Dbdxcn

    GND. Copper Plate B 650PMT141000 Side Panel-R 600PMT118002 Ferrite Core 032219180000 Bottom Tray 600PMT121000 (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 /DBDXCN /DDXCN/AR...
  • Page 6 XC-LA21 3 7 63 1515 0 2.3 CD MECHA. SECTION L 13942296513 14 12 u163 http://www.xiaoyu163.com...
  • Page 7 XC-LA21 3 7 63 1515 0 • CD MECHA. SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. Assy Motor DRW S 45-093-4239 Assy Chassis 45-093-4256 Spring 01-080-4541 Drawer 2 45-264-3278 Spring 01-082-4643 Assy Holder L...

  • Page 8: Block Diagram And Schematic Diagram

    XC-LA21 3 7 63 1515 0 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM STD. TUNER ASSY CD MECHA. PICKUP ASSY Spindle Carriage Drawer Motor Motor Motor FE101 CN102 (FM) (16P) (FM) ANTENNA CN101 (16P) (6P) T101 T103...
  • Page 9 XC-LA21 3 7 63 1515 0 CN20 (6P) M-LA21 (PH) L-CH PHONES R-CH JK503 CN604 From CN22 SN602 WH602 LK501 (7P) XC-LA21 (8P) (8P) (4P) (4P) : AUDIO SIGNAL ROUTE (RF/CD) : AUDIO SIGNAL ROUTE (TUNER) SPEAKER (AM) : AUDIO SIGNAL ROUTE (AM)
  • Page 10 XC-LA21 3 7 63 1515 0 3.2 OVERALL WIRING DIAGRAM PICKUP ASSY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 AM ANT FM ANT 3 4 5 6 7 8 9 10 11 12 13 14 15 16...
  • Page 11 XC-LA21 3 7 63 1515 0 Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST". J905 AUX ASSY AUX IN To M-LA21 (PMT1LA100091) To M-LA21 AUX OUT J201...
  • Page 12 XC-LA21 3 7 63 1515 0 3.3 STD. TUNER ASSY 118-040102-002A 042-104511-000A (AM) (FM) 118-040102-002A (FM) 136-14PMT1-B00J 003-020280-050 (AM) (FM) (FM) 008-314170-008A 019-000107-006A 003-050010-050 012-007840-010A (AM) 012-006120-010A 135-006116-160J 005-035100-000A (AM) 007-200610-000A (AM) 003-020380-050 008-685500-000A 136-TOCB17-171J CN201 L 13942296513 136-03PMT1-B00J...
  • Page 13 XC-LA21 3 7 63 1515 0 003-020380-050 019-000107-006A (FM) (FM) 003-082110-050 012-000120-010A (AM) 003-020380-050 003-020280-050 003-020280-050 010-101837-000A (FM) (AM) 003-020380-050 012-002240-010A L 13942296513 019-000450-012A 003-020380-050 003-020280-050 012-7NF803-007A 003-020380-050 018-010014-000A 003-020380-050 008-685500-000A 011-010051-120A u163 : AUDIO SIGNAL ROUTE (RF/CD) : TUNER SIGNAL ROUTE (AM) STD.
  • Page 14 XC-LA21 3 7 63 1515 0 3.4 CD ASSY 003-624052-050A 003-624052-050A 037-003534-100 020-001693-000A 010-849284-000A Decorder 135-006232-301J L 13942296513 008-680500-000A 011-010056-120A u163 136-08PMT1-250J http://www.xiaoyu163.com...
  • Page 15 XC-LA21 3 7 63 1515 0 CD ASSY (CD--PMT1E) 018-010014-000A 008-685500-000A 003-624052-050A 002-104085-102A 002-104085-102A VREF 135-TOCA16-160A 002-472065-000A RF Amp. 010-832065-000A L 13942296513 002-104085-102A 136-067238-205J 010-832065-000A u163 136-04PMT1-250J CARRIAGE MOTOR : AUDIO SIGNAL ROUTE (RF/CD) DRAWER MOTOR http://www.xiaoyu163.com...
  • Page 16 XC-LA21 3 7 63 1515 0 3.5 AUDIO, AUX, RECT and TRANS ASSYS CN13 CN206 135-PHS030-030J 135-006116-160J 004-010310-100 004-068350-100 Selector 004-068350-100 004-010310-100 (AU) AUDIO ASSY (PMT101000210) L 13942296513 CN904 010-400009-001A 008-801144-000A 120-100470-000 9V Reg. 050-140060-200J 008-685500-000A (AU) (AU) (AU)
  • Page 17 XC-LA21 3 7 63 1515 0 011-010051-121A : AUDIO SIGNAL ROUTE (RF/CD) : TUNER SIGNAL ROUTE (AU) : AUDIO SIGNAL ROUTE (AUX) 011-024001-000A • NOTE FOR FUSE REPLACEMENT FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. L 13942296513 CAUTION - 135-005267-090J REPLACE WITH SAME TYPE AND RATINGS ONLY.
  • Page 18 XC-LA21 3 7 63 1515 0 3.6 DISPLAY/CTL ASSY DISPLAY/CTL ASSY (PMT101000041) 110-033045-013A 135-FESTVK-240J 110-033045-013A 110-033045-013A 006-747300-05CA L 13942296513 001-229103-000A 003-H12203-204A 110-033040-013A 135-TOCB17-171J 021-114165-000A u163 110-033162-003A http://www.xiaoyu163.com...
  • Page 19 XC-LA21 3 7 63 1515 0 115-000920-000A 001-220104-000A 001-220104-000A SYSTEM CONTROL IC L 13942296513 111-000638-000A 001-220104-000A 003-430050-050 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 –...

  • Page 20: Pcb Connection Diagram

    XC-LA21 3 7 63 1515 0 4. PCB CONNECTION DIAGRAM NOTE FOR PCB DIAGRAMS : Part numbers in PCB diagrams match those in the schematic diagrams. The parts mounted on this PCB include all necessary parts for several destinations.
  • Page 21 XC-LA21 3 7 63 1515 0 L 13942296513 R182 T105 T106 C156 W245 C144 C180 FE101 L107 R151 C187 C125 C185 C157 R153 IC101 C142 R124 R150 W246 C126 C128 C170 C105 C167 C127 R129 R166 C140 W226 C129...
  • Page 22 XC-LA21 3 7 63 1515 0 4.2 CD ASSY CD ASSY CD MECHA. CD+9V GNDM GNDM VREF GNDCD CARRIAGE MOTOR, L 13942296513 PICKUP DRAWER GNDCD ASSY CD+5V MOTOR GNDCD GNDCD SERVO BOARD GNDCD PMT-1-01-03 CD+9V DRAW+ GNDM DRAW- CARR-...
  • Page 23 XC-LA21 3 7 63 1515 0 CD ASSY CD+9V GNDM GNDM GNDCD 48 45 L 13942296513 GNDCD CD+5V GNDCD GNDCD SERVO BOARD GNDCD PMT-1-01-03 CD+9V GNDM DRAW+ DRAW- CARR- CARR+ CD+5V CD+9V GNDCD u163 SIDE B http://www.xiaoyu163.com...

  • Page 24: Audio Board

    XC-LA21 3 7 63 1515 0 4.3 AUDIO ASSY C270 R292 W252 W258 AUDIO ASSY W259 L 13942296513 R290 SN204 CN204 R229 PWRCTRL W201 PMT1-01-02 AGND W209 W213 DGND DGND R220 +31V PGND IC202 -31V C281 C233 D201 C212...
  • Page 25 XC-LA21 3 7 63 1515 0 CN207 R255 C269 C270 C268 C267 C259 R278 Q265 R271 C280 R279 R280 R281 R269 R266 C264 R272 L 13942296513 C265 CN204 R249 R265 RCTRL R259 C261 R251 L253 C262 RL251 R287 R295...
  • Page 26 XC-LA21 3 7 63 1515 0 4.4 RECT and TRANS ASSYS CN11 RECT ASSY PMT1LA-01-06 RECTIFIER BOARD +TUNER8V +CD8V W318 +M8V +MCU8V P CLT D306 CLK CLT PRIMAR AC 3.8V C302 AC 3.8V RELAY B+ RELAY B+ D310 D307...
  • Page 27 XC-LA21 3 7 63 1515 0 TRANS ASSY YEL. ORN. PRIMARY TF303 SW301 SW302 DANGER PMT1LA-01-07 TRANSFORMER BOARD W307 W306 C316 L 13942296513 RL301 R308 F306 D311 AC IN SIDE A u163 http://www.xiaoyu163.com...
  • Page 28 XC-LA21 3 7 63 1515 0 4.5 AUX ASSY AUX ASSY C920 R937 R910 C905 R909 R905 R903 IC901 Q903 D902 R908 CN203 C902 CN204 R911 R914 R912 PWRCTL W913 R901 Q902 R917 R944 R942 R916 C926 C901 J905...
  • Page 29 XC-LA21 3 7 63 1515 0 4.6 DISPLAY/CTL ASSY DISPLAY/CTL ASSY Q403 Q405 Q402 Q405 R439 S408 S409 DOWN S412 S415 LED401 DISC1 DISC1E LED412 S404 R401 R441 R402 S401 POWER Q403 S411 S414 LED402 STOP DISC2 DISC2E SN15...

  • Page 30: Pcb Parts List

    XC-LA21 3 7 63 1515 0 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.
  • Page 31 XC-LA21 3 7 63 1515 0 Mark No. Description Part No. Mark No. Description Part No. Q2 (TRLNPNPWR 3DA8050) 008-680500-000A Q1 (TRLPNPPWR 3CA8550) 008-685500-000A AUDIO ASSY 2SB562 2SC1815 SEMICONDUCTORS D1-D3 1N4148 IC201 BU4052BC Z1 (ZENER IN-5232B 5.6V) 011-010056-120A IC202...
  • Page 32 XC-LA21 3 7 63 1515 0 Mark No. Description Part No. Mark No. Description Part No. OTHERS OTHERS CONN PIN 3 PINS 050-030160-200J JP WIRE AWG22#UL1672 051-265160-003J J201 CONN PIN 14 PINS 050-140060-200J JP WIRE AWG22 YELLOW 051-265180-010J JP WIRE AWG22 140MM...

  • Page 33: Adjustment

    XC-LA21 3 7 63 1515 0 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...
  • Page 34 XC-LA21 3 7 63 1515 0 6.1.2 Adjustment (1) Adjustment Locations CD ASSY SIDE A L 13942296513 CD+9V GNDM GNDM (FOCUS OFFSET) VREF VREF (FOCUS BALANCE) GNDCD (TRACKING BALANCE) GNDCD CD+5V GNDCD GNDCD (TRACKING OFFSET) O BOARD GNDCD u163 Fig.
  • Page 35 XC-LA21 3 7 63 1515 0 (2) Check and Adjustment 1. Focus Offset (FEO) Adjustment FUNCTION : CD DC voltage 0 ± 10 mV CD in stop mode Focus Offset Oscilloscope DC Mode V : 50mV/div H : 1mSec/div...
  • Page 36 XC-LA21 3 7 63 1515 0 3. Tracking Balance (TEB) Adjustment FUNCTION : CD (VREF) Keeps pushing the FF button. Track No. 1 of YEDS-7 TEST DISC PLAY Tracking Balance VC is made a center. A : B symmetry ADJ...

  • Page 37: General Information

    XC-LA21 3 7 63 1515 0 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 Can you hear the sound of Relay ?
  • Page 38 XC-LA21 3 7 63 1515 0 3. Can you hear the sound of CD Changer 4. Tuner troubleshooting Mechanism or clamper movement when power cord plug in Are the pin 2 of IC5 and Have noise come out ?
  • Page 39 XC-LA21 3 7 63 1515 0 5. CD troubleshooting • The total track number is incorrectly displayed Is MECHA ERROR displayed ? Do the CD head sled to the inner ? Please check 3P, 4P of CN4 and 9P, 11P of IC3.
  • Page 40 XC-LA21 3 7 63 1515 0 6. No audio signal come out on speaker Check the pins 9 (B) and 10 (A) of the IC201. Is the value is corrected according to Table 1 Please check the corres- ponding circuit and connec- tion.

  • Page 41: Disassembly/Assembly

    XC-LA21 3 7 63 1515 0 7.1.2 DISASSEMBLY/ASSEMBLY (1) Main Body Section × 2 STANDBY/ON OPEN/CLOSE × 2 × 2 Flat Blade Screwdriver Unook × 2 Tray Panel Set × 2 Drawer Side Panel L (Remove as well as Side Panel R)
  • Page 42 XC-LA21 3 7 63 1515 0 (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.)
  • Page 43 XC-LA21 3 7 63 1515 0 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. 2. Please do not disassemble Assy Holder L, R and the inside of...
  • Page 44 XC-LA21 3 7 63 1515 0 Drawer Disassembly of Ass'y Motor CRG S and Ass'y Motor DRW S ×2 ×2 Bottom Side ×3 L 13942296513 Ass'y Motor CRG S Ass'y PC Board A Drawer Ass'y Motor DRW S ×2...
  • Page 45 XC-LA21 3 7 63 1515 0 Chassis Lever 2 Carriage 300 Bottom Side Lift up The loss of this gear is noted. Arm Stopper B Spring Ass'y Clamper S0 L 13942296513 Disconnect the Hook Lifter Lifter Spring Belt Spring...
  • Page 46 XC-LA21 3 7 63 1515 0 Disassembly of Carriage 100, 200 The loss of Bevel Gear is noted. Slider 1 Drawer Carriage 100 Carriage 200 The back of Drawer Hook Assembly of Carriage 100, 200 L 13942296513 Hooks (Carriage 100 is No.1 carriage. Carriage 200 is No.2 carriage.)
  • Page 47 XC-LA21 3 7 63 1515 0 • Notes of procedure FRONT side Hang Carriage only here of Pinion. Carriage 200 is lightly lifted by the finger. When Carriage 100 drops below, Carriage 200 is lightly lifted by the finger.
  • Page 48 XC-LA21 3 7 63 1515 0 Assembly of Drawer and Chassis Its right side is slowly lowered up to the angle by which Bevel The following work is done before Drawer is put on Chassis. Gear can do in the slide while doing Drawer back and forth by (1) It is confirmed that Carriage 300 is clamped, and Clamper has about 5mm.

  • Page 49: Parts

    XC-LA21 7.2 PARTS 3 7 63 1515 0 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 •...
  • Page 50 XC-LA21 3 7 63 1515 0 l l o l l o l l o − l l o l l o l l o l l o l l o l l o l l o − −...

  • Page 51: Display

    XC-LA21 3 7 63 1515 0 7.2.2 DISPLAY 115-000920-000A (HNA-09SS20) (DISPLAY CONTROL ASSY : LCD401) • FL DISPLAY Anode Connection L 13942296513 Pin Connection u163 http://www.xiaoyu163.com...

  • Page 52: Remote Control Unit

    XC-LA21 3 7 63 1515 0 7.3 REMOTE CONTROL UNIT 7.3.1 SCHEMATIC DIAGRAM L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 53 XC-LA21 3 7 63 1515 0 7.3.2 PCB DIAGRAM Display LED801 Power /Clock Power Open/Close Snooze Sleep Timer Dimmer Mono Tuner Menu Title Zoom Mute Play/ Pause Play Mode <- Enter -> Stop CD 1 Disply CD 2 Repeat...

  • Page 54: Panel Facilities And Specifications

    XC-LA21 3 7 63 1515 0 8. PANEL FACILITIES AND SPECIFICATIONS 8.1 PANEL FACILITIES Front Panel L 13942296513 3 COMPACT DISC MULTI CHANGER LA21 STEREO CD TUNER u163 http://www.xiaoyu163.com...
  • Page 55 XC-LA21 3 7 63 1515 0 1 / 4 / TUNING – – When using the CD CD SELECT 1 / 2 / 3 – Use to select CDs, and start playback if there's a disc loaded. Also player, use to scan backwards, or skip back switches the system on if it was in standby.
  • Page 56 XC-LA21 3 7 63 1515 0 STANDBY/ON – Press to switch the unit on or Remote Control Unit into standby. DISPLAY/CLOCK – Press to change the informa- tion shown in the display. DIMMER – Use to change the brightness of the display.

  • Page 57: Aaa' Size R03 Batteries

    XC-LA21 3 7 63 1515 0 8.2 SPECIFICATIONS Amplifier Section (M-LA21) Accessories Continuous Power (RMS) ....100 W + 100 W • Operating instructions .......... 1 (1 kHz, THD 10%, 8Ω) • Remote control unit ..........1 Peak Music Power Output ......2500 W •...

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