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Pioneer XC-L7 Service Manual
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Pioneer XC-L7 Service Manual

Stereo cd receiver
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Service
Manual
STEREO CD RECEIVER
XC-L7
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model
Type
XC-L7
‡
KUXJ/CA
CONTENTS
1. SAFETY INFORMATION ...................................... 2
2. EXPLODED VIEWS AND PARTS LIST ................ 3
3. SCHEMATIC DIAGRAM ..................................... 10
4. PCB CONNECTION DIAGRAM .......................... 26
5. PCB PARTS LIST ............................................... 38
6. ADJUSTMENT .................................................... 43
PIONEER ELECTRONIC CORPORATION
PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Lane Crawford Place, Singapore 0923
C C C C C PIONEER ELECTRONIC CORPORATION 1998
Power Requirement
AC120V
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
7. GENERAL INFORMATION ................................ 50
7.1 PARTS .......................................................... 50
7.1.1 IC ........................................................... 50
7.1.2 DISPLAY ................................................ 54
7.2 DIAGNOSIS .................................................. 55
7.2.1 DISASSEMBLY ..................................... 55
7.2.2 PCB LOCATIONS ................................. 58
7.3 BLOCK DIAGRAM ........................................ 59
T - ZZK APR. 1998 Printed in Japan
ORDER NO.
RRV1946
Remarks

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  • Page 1 PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Lane Crawford Place, Singapore 0923 C C C C C PIONEER ELECTRONIC CORPORATION 1998...

  • Page 2: Safety Information

    The use of a substitute replacement component which does Leakage 0.5mA current Device not have the same safety characteristics as the PIONEER tester under recommended replacement one, shown in the parts list in test this Service Manual, may create shock, fire, or other hazards.

  • Page 3: Exploded Views And Parts List

    XC-L7 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.
  • Page 4 XC-L7 2.2 MAIN SECTION (XC-L7) 37(2/2) 37(1/2)
  • Page 5 XC-L7 Refer to "2.4 SINGLE MECHANISM ASSY"...
  • Page 6 XC-L7 • MAIN SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. CD MAIN Unit AWU7147 Rivet VEC1178 CD KEYB1 Unit AWZ8985 Tray Panel CD AAN7170 CD KEYB2 Unit AWZ8986 Black Line AAP7033 POWER AMP Unit...
  • Page 7 XC-L7 2.3 DISPLAY UNIT DU-L7 • DISPLAY SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. CD FLDP Unit AWU7003 Screw BPZ30P100FZK CD CNB Unit AWZ8988 Screw PMZ30P060FZK CD DPKEY Unit AWZ8989 AEB7090 Display Button AAD7409...
  • Page 8 XC-L7 2.4 SINGLE MECHANISM ASSY...
  • Page 9 XC-L7 • SINGLE MECHANISM ASSY PARTS LIST Mark No. Description Part No. Mark No. Description Part No. Lever Switch(S601) DSK1003 Screw BPZ20P060FMC Screw PBA1048 PWB Holder PNW2057 Rubber Belt PEB1193 Screw BPZ26P100FMC Motor Pulley PNW1634 Earth Lead Unit PDF1104 Tray Black V...

  • Page 10: Schematic Diagram

    XC-L7 3. SCHEMATIC DIAGRAM 3.1 OVERALL CONNECTION DIAGRAM CD KEYB1 UNIT FM/AM TUNER (AWZ8985) CD KEYB2 MODULE UNIT (AXQ7065) J6201 (AWZ8986) CD MAIN UNIT (AWU7147) POWER POWER AF UNIT HP UNIT (AWZ8991) (AWU7006) POWER SPTB UNIT (AWU7149) POWER AMP UNIT...

  • Page 11: Pcb Parts List

    XC-L7 Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS AND PARTS LIST" or "PCB PARTS LIST". DISPLAY UNIT SINGLE CD CNB UNIT DU-L7 MECHANISM ASSY (AWZ8988) (RXA1672) SERVO CD DPKEY MECHANISM UNIT CD FLDP UNIT...
  • Page 12 XC-L7 3.2 FM/AM TUNER MODULE MIX AMP RF AMP BUFFER IF AMP FM +B SW AM RF TUNING BLOCK FM/AM TUNER MODULE (AXQ7065)
  • Page 13 XC-L7 AF AMP AF AMP REGULATOR...
  • Page 14 XC-L7 3.3 PICKUP ASSY PICKUP ASSY (PEA1291) (FS) (FS) (TS) (TS) (TS) (TS) (FS) (FS) CN1101 (FS) (TS) (TS) (TS) (FS) (FS) (FS) (CD) (FS) (FS) (FS) (FS) (TS) (TS) (TS) (TS) (CD) (FS) (FS) (NC) (CD) (CD) (FS) (FS)
  • Page 15 XC-L7 ∗1 50T-JUMP: After switching to the pause mode, press • WAVEFORMS OF CD MAIN UNIT the manual search key. ∗2 FOCUS-IN: Press the play key without loading a disc. Note: The encircled numbers denote measuring points in the schematic diagram.
  • Page 16 XC-L7 3.4 MECHANISM BOARD ASSY AND CD MAIN UNIT(1/2) SERVO MECHANISM ASSY SL (AXA7017) (FS) (TS) (SM) (SM) PICKUP ASSY (PEA1291) (FS) (TS) (CD) (FS) (FS) 2.5V (FS) MECHANISM BOARD ASSY (PWX1192) (TS) (TS) -14V S610 (TS) DC MOTOR ASSY...
  • Page 17 XC-L7 SIGNAL ROUTE (SM) (CD) : SPINDLE MOTOR ROUTE :CD AUDIO SIGNAL ROUTE (CM) (FS) : CARRIAGE MOTOR ROUTE : FOCUS SERVO LOOP LINE (TS) : TRACKING SERVO LOOP LINE (CD) (TS) (FS) (TS) (FS) 2.5V (FS) (FS) (CD) (TS)
  • Page 18 XC-L7 3.5 CD MAIN (2/2), CD KEYB1 AND CD KEYB2 UNITS IC6101 PD4843B SYSTEM CONTROL (PB) (REC OUT) (PB) (TX) (TX) (AUX) (REC OUT) DC 4.5V DC 4.5V -12V DC 4.5V STBY : 0V ON : -12V (CD) STBY : 0V...
  • Page 19 XC-L7 SIGNAL ROUTE : LCH AUDIO SIGNAL ROUTE CN5703 (AUX) -28V : AUX AUDIO SIGNAL ROUTE (PB) : DECK PB SIGNAL ROUTE (REC OUT) 5.6V : DECK REC SIGNAL ROUTE (TX) : TUNER AUDIO SIGNAL ROUTE GND DISP (CD) : CD AUDIO SIGNAL ROUTE...
  • Page 20 XC-L7 3.6 CD FLDP, CD CNB AND CD DPKEY UNITS CN6801 -28V CD CNB UNIT (AWZ8988) REMOTE RECEIVER UNIT CD FLDP UNIT (AWU7003)
  • Page 21 XC-L7 CD DPKEY UNIT CD FLDP UNIT S5751 : STANDBY/ON S5755 : CHARACTER S5752 : FUNCTION (PLAY) S5756 : MENU S5757 : CANCEL ( S5753 : VOLUME S5758 : − ( S5754 : S5759 : + ( S5760 : SET FM/AM/STATION...
  • Page 22 XC-L7 3.7 POWER AF AND POWER HP UNITS L + R DC 4.5V DC 0V (AUX) (TX) (TX) (AUX) (CD) (CD) (PB) (PB) DC 0V DC 4.5V DC4.5V (TX) (CD) FUNCTION (PB) TONE SUBWOOFER LEVEL CONT. DC 4.5V (REC OUT)
  • Page 23 XC-L7 POWER HP UNIT (AWU7006) (HP) (HP) (HP) (HP) 4.5V HP AMP VRIC Vref 0.22 / 50 0.22 / 50 SIGNAL ROUTE (TX) : LCH AUDIO SIGNAL ROUTE : TUNER AUDIO SIGNAL ROUTE (CD) (AUX) : AUX AUDIO SIGNAL ROUTE...
  • Page 24 XC-L7 3.8 POWER AMP, POWER TRANS AND POWER SPTB UNITS POWER TRANS UNIT C13,C14 : 4700 / 35 (AWU7148) AC POWER T1 POWER TRANSFORMER CORD ATS7216 -29V DISPLAY at Connect : -30V Not Connect : 0V IC2,IC3 : AEK7017 -58V...
  • Page 25 XC-L7 SIGNAL ROUTE : LCH AUDIO SIGNAL ROUTE POWER AMP UNIT(AWZ8990) (AUX) : AUX AUDIO SIGNAL ROUTE : SUBWOOFER OUTPUT (AUX) (AUX) CN6101 ASR7007 DRIVE DC 4.5V ASR7007 STANDBY : 0V STK401-030 POWER ON : -29V (AUX) SATELITE ASR7007 SP AMP...

  • Page 26: Parts

    XC-L7 4. PCB CONNECTION DIAGRAM NOTE FOR PCB DIAGRAMS : 1. Part numbers in PCB diagrams match those in the schematic 3. The parts mounted on this PCB include all necessary parts for diagrams. several destinations. 2. A comparison between the main parts of PCB and schematic For further information for respective destinations, be sure to diagrams is shown below.

  • Page 27: Display

    XC-L7 4.1 FM/AM TUNER MODULE CN3611 FM/AM TUNER MODULE VR6201 Q6204 Q6203 SIDE A FM/AM TUNER MODULE Q6201 Q6202 IC6201 Q6301 Q6303 Q6302 Q6304 Q6401 IC6202 Q6214 Q6403 Q6306 Q6402 Q6404 SIDE B Q6205 (ANP7159-B)
  • Page 28 XC-L7 4.2 MECHANISM BOARD ASSY AND CD MAIN UNIT MECHANISM BOARD ASSY SPINDLE MOTOR LOADING MOTOR, CLAMP VR1101 CARRIAGE VR1102 MOTOR (PNP1239-C) PICKUP ASSY IC1201 IC1202 SIDE A Q1341 CN3001 CD MAIN UNIT...
  • Page 29 XC-L7 CN6201 IC3901 IC3902 CN101 CN6201 Q3901 Q3902 CN5703 (ANP7209-C) CN3002 SIDE A...
  • Page 30 XC-L7 IC3601 Q3601 CD MAIN UNIT Q3905 Q6102 Q3903 Q6101 Q3904 IC6101 Q6103 (ANP7209-C) SIDE B...
  • Page 31 XC-L7 IC1101 IC3601 IC1301 Q1342 Q1541 Q1544 Q6001 Q6004 SIDE B...
  • Page 32 XC-L7 4.3 CD KEYB1, CD KEYB2, CD FLDP, CD CNB AND CD DPKEY UNITS CD DPKEY UNIT CD CNB CN6801 UNIT CD KEYB1 UNIT CN6202 SIDE A (ANP7209-C) CD KEYB2 UNIT CD FLDP UNIT E F G H...
  • Page 33 XC-L7 CD DPKEY UNIT CD KEYB1 UNIT CD FLDP UNIT SIDE B CD KEYB2 UNIT (ANP7209-C)
  • Page 34 XC-L7 4.4 POWER AF, POWER HP, POWER AMP, POWER TRANS AND POWER SPTB UNITS POWER TRANS UNIT POWER HP UNIT POWER CORD SIDE A IC3301 Q3751 IC61 IC51 IC32 CN6101...
  • Page 35 XC-L7 CN6103 POWER AF UNIT Q3041 CN6102 FAN MOTOR POWER SPTB UNIT POWER AMP UNIT (ANP7210-B) IC53 Q61 Q52 IC31 IC62 Q71 Q72 SIDE A...
  • Page 36 XC-L7 POWER AF UNIT IC3201 IC3011 IC3041 Q3532 IC3071 IC3501 Q3531 Q3533 POWER SPTB UNIT (ANP7210-B) POWER AMP UNIT SIDE B...
  • Page 37 XC-L7 POWER TRANS UNIT POWER HP UNIT Q3393 Q3392 Q3391 Q3712 Q3381 Q3383 Q3481 Q3711 Q3701 Q3731 Q3721 Q3741 Q3752 Q3722 SIDE B...

  • Page 38: Pcb Parts List

    XC-L7 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.
  • Page 39 XC-L7 Mark No. Description Part No. Mark No. Description Part No. C6220, C6226, C6242, C6256 CKSQYF223Z50 C1481, C1482 CCSQCH151J50 C6225 CKSQYF473Z50 C1326 CCSQCH220J50 C1391–C1393, C6114, C6120, C6124 CCSQCH221J50 RESISTORS C6126 CCSQCH221J50 R6280 RD1/4PU101J C1118 CCSQSL561J50 R6413, R6416, R6418, R6906, R6909 RS1/8S0R0J...
  • Page 40 XC-L7 Mark No. Description Part No. Mark No. Description Part No. RESISTORS CD KEYB1 UNIT R5724 RA11T473J R5721, R5722 RA15T473J SEMICONDUCTORS R5723 RA8T473J D6203 1SS254 Other Resistors RS1/10S&&&J D6201 SLP3118C51H OTHERS SWITCHES 9P CABLE HOLDER 51048-0900 S6201, S6202 RSG1034 12P CABLE HOLDER...
  • Page 41 XC-L7 Mark No. Description Part No. Mark No. Description Part No. C3047, C3048 CEAT100M50 D25, D3381, D3701 1SS254 C3013, C3014, C3043 CEAT1R0M50 D3721, D3722, D3731 1SS355 C3044 CEYA470M10 D2SBA20(B) C3033, C3034, C3222 CFTLA683J50 D3SBA20(B) C3509, C3510 CKSQYB102K50 MTZJ33A C3042, C3046 CKSQYF103Z50 MTZJ6.2B...
  • Page 42 XC-L7 Mark No. Description Part No. Mark No. Description Part No. POWER TRANS UNIT SEMICONDUCTORS IC2, IC3 AEK7017 COILS AND FILTERS ATF-151 CAPACITORS C1, C2(10000pF/AC250V) ACG7020 C4–C6 CKSQYB473K50 CQMA103J50 RESISTORS R2 (2.2MΩ/ 1/2W) RCN1080 OTHERS CABLE HOLDER(9P) 51052-0900 CONDENSER COVER...

  • Page 43: Test Mode

    XC-L7 6. ADJUSTMENT 6.1 TEST MODE 6.1.1 HOW TO START/CANCEL TEST MODE TEST MODE : ON TEST TEST W6102 W6102 W6103 W6103 Short point Short point CD MAIN UNIT CD MAIN UNIT SIDE B FUNCTION W6102 TEST MODE TEST TEST...

  • Page 44: Tuner Section

    XC-L7 6.2 TUNER SECTION 6.2.1 FM TUNER SECTION • Set the mode selector to FM BAND. • Connect the wiring as shown in Fig. 1. ± d ( µ ) V v i t y t i 1 ± 2 g i l 6.2.2 AM TUNER SECTION...
  • Page 45 XC-L7 6.3 CD SECTION 6.3.1 PREPARATIONS Jigs and Measuring Instruments 8-cm DISC Precise screwdriver screwdriver CD TEST DISC (With at least about (YEDS-7) screwdriver (small) (medium) 20 minutes recording) 39 kΩ 0.001µF Dual-trace Ball point hexagon wrench screwdriver Low-frequency oscilloscope Low pass filter (size: 1.5mm)
  • Page 46 XC-L7 Adjustment Locations (REAR) SIDE A CD MAIN UNIT W6102 TEST MODE Short Point W6103 VR1102 ADJUSTMENT SCREW (FOCUS GAIN) 6. FE (Radial tilt direction) VR1101 5. FIN (TRACK GAIN) PICKUP ASSY 4. VC 3. TIN 2. TE ADJUSTMENT SCREW (CN1102) 1.
  • Page 47 XC-L7 Check and Adjustment 1. Focus Offset Check • Test mode DC voltage 0 ± 50mV Check • None disc If not = repair Oscilloscope DC Mode V : 5mV/div START Player H : 10mSec/div (CN1102) Probe(10:1) CD MAIN UNIT 2.
  • Page 48 XC-L7 3. Pickup Radial/ Tangential Direction Tilt Adjustment GGK1002 Test mode → CLOSE FOCUS servo → CLOSE TEST DISC SPDL servo → CLOSE TRKG servo 8cm DISC PLAY Remove lock tight. Eye pattern OK (Smooth) Oscilloscope AC Mode V : 20mV/div...
  • Page 49 XC-L7 5. Focus Servo Loop Gain Adjustment Test mode → CLOSE FOCUS servo → CLOSE SPDL servo → CLOSE TRKG servo YEDS-7 TEST DISC R=35mm VR1102 PLAY Lissajous Waveform CD MAIN UNIT Oscilloscope X-Y Mode Low-frequency X : 20mV/div oscillator Y : 5mV/div 1.2kHz 1Vp-p...

  • Page 50: Block Diagram

    XC-L7 7. GENERAL INFORMATION 7.1 PARTS 7.1.1 IC • The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams. 7 CXD2529Q (CD MAIN UNIT : IC1301) • DIGITAL SIGNAL PROCESSING for CD ¶...
  • Page 51 XC-L7 ¶ Pin Function − − y l l × , 1 × × l a i l a i l a i n i l l a i l a i l a i n i l l a i −...
  • Page 52 XC-L7 − − , s i l a i − − v i t − − − i f i l − − l l i l l i − − i f i l − − − − •...
  • Page 53 XC-L7 7 PD4843B (CD MAIN UNIT : IC6101) • SYSTEM CONTROL UCOM ¶ Pin Function t s i c t i c t i − — — — c t i d i l c t i − — —...
  • Page 54 XC-L7 7.1.2 DISPLAY AAV7051 (CD FLDP UNIT : V5701) • FL DISPLAY • Grid Assignment and Pin Assignment • Pin Connection • Anode Connection...
  • Page 55 XC-L7 7.2 DIAGNOSIS 7.2.1 DISASSEMBLY (1) BONNET AND TOP PANEL Disassembly : Assembly Bonnet × 3 FFC (Lead Card 5P) Top Panel Bottom view Unhook...
  • Page 56 XC-L7 (2) CD MAIN UNIT, POWER AF UNIT AND FM/AM TUNER MODULE Disassembly : Assembly CN3501 CD MAIN Unit × 3 POWER AF Unit FM/AM Tuner Module × 2 × 2 POWER AF Unit FM/AM Tuner Module Top Barrier CD Main Unit...
  • Page 57 XC-L7 (3) SINGLE MECHANISM ASSY AND POWER AMP UNIT Disassembly : Assembly × 4 Rear Panel Single Mechanism Assy POWER AMP Unit × 5 POWER AMP Unit Discharge C13, C14, C31 and C32 with several ohms. (Microfuse and so on will be damaged when short-circuit the circuit before discharge.) ∗...
  • Page 58 XC-L7 7.2.2 PCB LOCATIONS • DU-L7 CD FLDP UNIT CD CNB UNIT CD DPKEY UNIT • XC-L7 POWER TRANS UNIT CD MAIN UNIT POWER SPTB UNIT POWER AF UNIT FM/AM TUNER MODULE CD KEYB1 UNIT POWER AMP UNIT POWER HP UNIT...
  • Page 59 XC-L7 7.3 BLOCK DIAGRAM • POWER SUPPLY BLOCK IC3301 IC3011 (M62419FP) TONE IC3071 RY3331 CN3841 Function Vol IC Power SATELITE SPEAKER Woofer AUXIN Level VR Q3391 RY3431 CN3842 CN6901 Power 1,42 System Cable WOOFER IC3201 PB IN (1/2) IC3401 IC3501...

  • Page 60: Panel Facilities And Specifications

    XC-L7 8. PANEL FACILITIES AND SPECIFICATIONS • PANEL FACILITIES STEREO CD RECEIVER XC-L7 DISPLAY UNIT DU-L7 ¡ ¢ CHARACTER MENU CANCEL ¢ FM/AM/STATION STANDBY/ON PHONES STEREO CD RECEIVER XC-L7 DISPLAY UNIT DU-L7 1 POWER, STANDBY/ON switch 1 CHARACTER/Timer button 2 FM/AM/station button...
  • Page 61 XC-L7 DISPLAY UNIT DU-L7 REMOTE SENSOR FUNCTION (PLAY) STANDBY/ON VOLUME ¢ FM/AM/STATION DISPLAY UNIT DU-L7: Roles of common operation buttons vary depending on the input function currently selected, as follows: During Tuner Operation : Frequency and station – (down) button.
  • Page 62 XC-L7 button ! CANCEL button @ MENU button DIRECT PLAY ¶ Roles of buttons 3, 4, 5, 6, and ~ vary depending on the input function currently selected, as follows: ¡ MENU During Tuner Operation CANCEL ¢ : Station + (up) button...

  • Page 63: Specifications

    XC-L7 • SPECIFICATIONS Stereo CD Receiver: XC-L7 Compact Disc Section Amplifier Section Type ......Compact disc digital audio system Usable discs ..........Compact discs Output for Satellite Speakers Channels ............2 (stereo) Continuous average power output of 20 Frequency Response ........4 Hz–20 kHz watts* per channel, min., at 8 ohms, from...

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