Pioneer XR-A660 Service Manual
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Pioneer XR-A660 Service Manual

Stereo cd cassette deck receiver
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STEREO CD CASSETTE DECK RECEIVER
XR-A660
XR-A550
XR-A330
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type
XR-A660
MYXK
NVXK
MYXJ
-
NVXJ
-
CONTENTS
1. SAFETY INFORMATION ...................................... 2
3. SCHEMATIC DIAGRAM ..................................... 16
4. PCB CONNECTION DIAGRAM .......................... 32
5. PCB PARTS LIST ............................................... 44
6. ADJUSTMENT .................................................... 52
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. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER ELECTRONIC CORPORATION 1998
Model
XR-A550
XR-A330
-
-
AC220-230V
-
-
AC230V
AC220-230V
AC230V
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
XR-A660
Power Requirement
7. GENERAL INFORMATION ............................... 61
7.1 PARTS ......................................................... 61
7.1.1 IC ......................................................... 61
7.1.2 DISPLAY .............................................. 68
7.2 DISASSEMBLY ........................................... 72
7.3 BLOCK DIAGRAM ....................................... 76
ORDER NO.
RRV2047
Remarks
T - ZZK OCT. 1998 Printed in Japan

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  • Page 1: Table Of Contents

    PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936 PIONEER ELECTRONIC CORPORATION 1998 T –...

  • Page 2: Safety Information

    XR-A660, XR-A550, XR-A330 1. SAFETY INFORMATION This service manual is intended for qualified service technicians ; it is not meant for the casual do-it- yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual.

  • Page 3: Exploded Views And Parts List

    See Contrast table (2) Operating Instructions See Contrast table (2) Rear Pad See Contrast table (2) (2) CONTRAST TABLE XR-A660/MYXK, NVXK, XR-A550/MYXJ, NVXJ, XR-A330/MYXJ and NVXJ are constructed the same except for the following : l l e × × a i l...
  • Page 4 XR-A660, XR-A550, XR-A330 2.2 EXTERIOR (1/2) Note : Hook Tray cap on top of loading tray and then insert the bottom three hooks. Note : Attatch on the same numbers × three. XR-A550, XR-A330 only Refer to "2.5 $M MECHANISM CD".
  • Page 5 See Contrast table (2) Cord Stopper See Contrast table (2) Push Rivet See Contrast table (2) Cushion Rubber XEB3002 Screw VBZ30P080FZK (2) CONTRAST TABLE XR-A660/MYXK, NVXK, XR-A550/MYXJ, NVXJ, XR-A330/MYXJ and NVXJ are constructed the same except for the following :...
  • Page 6 XR-A660, XR-A550, XR-A330 2.3 EXTERIOR (2/2) MYXK and MYXJ Types only NVXK and NVXJ Types only XR-A660, XR-A550 only XR-A660 only XR-A550, XR-A330 only XR-A660, XR-A550 only NVXK and NVXJ Types 28 27 only MYXK and MYXJ Types only XR-A550,...
  • Page 7 Fuse Card See Contrast table (2) Locking Spacer See Contrast table (2) Card Spacer See Contrast table (2) (2) CONTRAST TABLE XR-A660/MYXK, NVXK, XR-A550/MYXJ, NVXJ, XR-A330/MYXJ and NVXJ are constructed the same except for the following : t i c...

  • Page 8: Front Panel Section

    XR-A660, XR-A550, XR-A330 2.4 FRONT PANEL SECTION XR-A550, XR-A660 only XR-A330 only XR-A660 only XR-A550, XR-A330 only 34(1/2) XR-A660 only 34(2/2) XR-A550, XR-A330 only XR-A660 only XR-A550, XR-A330 only Refer to "2.7 and 2.8 MECHANISM UNIT".
  • Page 9 See Contrast table (2) Latch Mold L XMR3001 Binder See Contrast table (2) Latch Mold R XMR3002 GND Plate B XNG3005 (2) CONTRAST TABLE XR-A660/MYXK, NVXK, XR-A550/MYXJ, NVXJ, XR-A330/MYXJ and NVXJ are constructed the same except for the following :...
  • Page 10 XR-A660, XR-A550, XR-A330 2.5 $M MECHANISM CD Refer to "2.6 SERVO MECHANISM ASSY".
  • Page 11 2.6 SERVO MECHANISM ASSY • $M MECHANISM CD PARTS LIST Mark No. Description Part No. MOTOR Assy AWZ8428 SW Assy AWZ8429 CD Assy (XR-A660, XR-A550) XWZ3141 CD Assy (XR-A330) XWZ3050 • • • • • Servo Spring ABH7126 Belt AEB7072 Clamp Magnet AMF7001...
  • Page 12 XR-A660, XR-A550, XR-A330 2.7 MECHANISM UNIT (XR-A660) Mech. ΙΙ Only Mech. Ι Only Mech. ΙΙ Mech. Ι Mech. ΙΙ Mech. Ι Only Mech. ΙΙ...
  • Page 13 XR-A660, XR-A550, XR-A330 • MECHANISM UNIT PARTS LIST Mark No. Description Part No. Plate HD BLK (Mech. ΙΙ) F513-811 Plate HD BLK (Mech. Ι) F513-819 Motor Main BLK (Mech. ΙΙ only) F525-324 • • • • • PCB Control BLK...
  • Page 14 XR-A660, XR-A550, XR-A330 2.8 MECHANISM UNIT (XR-A550 and XR-A330) Mech. ΙΙ Only Mech. Ι Only Mech. ΙΙ Mech. Ι Mech. ΙΙ Mech. ΙΙ Only Mech. ΙΙ Only Mech. ΙΙ Only Mech. Ι...
  • Page 15 XR-A660, XR-A550, XR-A330 • MECHANISM UNIT PARTS LIST Mark No. Description Part No. Plate HD BLK (Mech. ΙΙ) F513-811 Plate HD BLK (Mech. Ι) F513-825 Motor Main BLK (Mech. ΙΙ only) F525-324 • • • • • PCB Control BLK...

  • Page 16: Schematic Diagram

    XR-A660, XR-A550, XR-A330 3. SCHEMATIC DIAGRAM 3.1 OVERALL WIRING DIAGRAM CD SW LED ASSY (XWZ3086) XR-A660 ONLY FM/AM TUNER MODULE (MYXK, NVXK : AXQ7077) (MYXJ, NVXJ : AXQ7068) CN6201 1/3, 2/3, AF ASSY (XR-A660 : XWZ3097) (XR-A550 : XWZ3077) (XR-A330 : XWZ3063)
  • Page 17 XR-A660, XR-A550, XR-A330 Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST". DISPLAY ASSY (XR-A660 : XWZ3099) (XR-A550 : XWZ3079) (XR-A330 : XWZ3065) XR-A660 ONLY XR-A660 ONLY AEK7071 XR-A660 ONLY...
  • Page 18 XR-A660, XR-A550, XR-A330 3.2 FM/AM TUNER MODULE MIX AMP RF AMP BUFFER IF AMP FM +B SW AM RF TUNING BLOCK FM/AM TUNER MODULE (MYXK AND NVXK TYPE : AXQ7077) (MYXJ AND NVXJ TYPE : AXQ7068)
  • Page 19 XR-A660, XR-A550, XR-A330 AF AMP AF AMP REGULATOR...
  • Page 20 XR-A660, XR-A550, XR-A330 3.3 CD, MOTOR and SW ASSEMBLIES CD ASSY (XR-A660, XR-A550 : XWZ3141) (XR-A330 : XWZ3050) MOTOR ASSY (AWZ8428) CARRIAGE MOTOR J8502 D20PWW0405E SERVO MECHANISM ASSY AXA7039...
  • Page 21 XR-A660, XR-A550, XR-A330 Note: The encircled numbers denote measuring point in the schematic diagram. CN8005- Pin 1 : PLAY MODE (RF) H : 500nsec/div 1.8Vp-p VREF CN8005- Pin 2 : TEST MODE, Tracking Open(TRER) H : 5msec/div C8308 1000p 1.0Vp-p...
  • Page 22 XR-A660, XR-A550, XR-A330 3.4 AF ASSY (1/3) AF ASSY (XR-A660 : XWZ3097) (XR-A550 : XWZ3077) XR-A550,A330 (XR-A330 : XWZ3063) ONLY XR-A660 ONLY XR-A660 ONLY C2335 27p 22k(XR-A660) 39k(XR-A550,A330) XR-A550,A330 ONLY XR-A660 ONLY XR-A550,A330 ONLY C2336 27p : DECK PB SIGNAL ROUTE...
  • Page 23 XR-A660, XR-A550, XR-A330 XR-A550,A330 ONLY XR-A550,A330 ONLY XR-A550,A330 ONLY XR-A550,A330 XR-A550,A330 ONLY ONLY 22k(XR-A660) 0(XR-A550,A330) 22k(XR-A660) 0(XR-A550,A330) XR-A550,A330 ONLY XR-A550,A330 XR-A660 ONLY ONLY XR-A660 ONLY XR-A660 ONLY...
  • Page 24 XR-A660, XR-A550, XR-A330 3.5 AF ASSY (2/3) AF ASSY (XR-A660 : XWZ3097) CN8004 (XR-A550 : XWZ3077) (XR-A330 : XWZ3063) XR-A660, XR-A550 ONLY C3015, C3017 0.1/50(XR-A660) 0.22/50(XR-A550, A330) 0.15 C3039, C3040 0.1/50(XR-A660) 0.22/50(XR-A550, A330) 0.22/50 0.22/50 : AUDIO SIGNAL ROUTE : CD AUDIO SIGNAL ROUTE...
  • Page 25 XR-A660, XR-A550, XR-A330 CN6201 XR-A660, XR-A550 ONLY 4.332MHz 4700p 4700p XR-A660 ONLY XR-A660 ONLY...
  • Page 26 XR-A660, XR-A550, XR-A330 3.6 AF (3/3) and SECONDARY ASSEMBLIES IC3301 C3313, C3314 CFTYA 0.1 : XR-A660 STK407-070B(XR-A660,A550) CFTYA 0.22 : XR-A550, XR-A550 STK407-050B(XR-A330) R3315, R3316 47k : XR-A660 39k : XR-A550 56k : XR-A330 R3317, R3319 0.47/50 47k : XR-A660...
  • Page 27 TYPE NO. 4911.25 MFD, BY LITTELFUSE INK. TYPE NO. 491005 MFD, BY LITTELFUSE INK. (XR-A660 : XWZ3097) FOR IC71 (AEK7010). FOR IC21 AND IC22(AEK7046: XR-A660, XR-A550). CAUTION : FOR CONTINUED PROTECTION AGAINST CAUTION : FOR CONTINUED PROTECTION AGAINST (XR-A550 : XWZ3077) RISK OF FIRE.
  • Page 28 XR-A660, XR-A550, XR-A330 3.7 PRIMARY and SUB TRANS ASSEMBLIES PRIMARY ASSY (XWZ3066) SUB TRANS ASSY (XWZ3067)
  • Page 29 XR-A660, XR-A550, XR-A330 10000pF/AC250V • NOTE FOR FUSE REPLACEMENT CAUTION - FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE WITH SAME TYPE AND RATINGS ONLY. XR-A660, XR-A550 : AEK1057 (T2A) XR-A330 : AEK1056 (T1.6A)
  • Page 30 XR-A660, XR-A550, XR-A330 3.8 DISPLAY and CD SW LED ASSEMBLIES DISPLAY ASSY DISPLAY ASSY (XR-A660 : XWZ3099) S5911 : DISPLAY S5926 : DOLBY NR ON/OFF S5912 : TIMER S5927 : ASES/COPY (XR-A550 : XWZ3079) S5913 : ENTER S5928 : AUX S5929 : TAPE Ι/ΙΙ...
  • Page 31 XR-A660, XR-A550, XR-A330 2/3 CN5101 CN5501 52045-3845 XR-A330 ONLY SLP9118C51H(XR-A660) SLP7118C51H(XR-A550,A330) XR-A660, XR-A660 XR-A660 XR-A550 ONLY ONLY ONLY XR-A660 ONLY XR-A660 XR-A660 ONLY ONLY 1SS183 XR-A550, XR-A660 ONLY A330 ONLY XR-A550, XR-A330 ONLY 1SS181 1SS181 S5937 : OPEN/CLOSE S5938 : DISC CHANGE...

  • Page 32: Pcb Connection Diagram

    XR-A660, XR-A550, XR-A330 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 33 XR-A660, XR-A550, XR-A330 4.1 FM/AM TUNER MODULE SIDE A CN3051 FM/AM TUNER MODULE VR6201 Q6204 Q6203 SIDE B FM/AM TUNER MODULE IC6201 Q6201 Q6202 Q6601 Q6214 Q6501 IC6202 Q6205 Q6102 Q6105 Q6101 (MYXK AND NVXK TYPES : ANP7161-A) (MYXJ AND NVXJ TYPES : ANP7160-B)
  • Page 34 XR-A660, XR-A550, XR-A330 4.2 CD, MOTOR and SW ASSEMBLIES SW ASSY MOTOR LOADING ASSY MOTOR SERVO MECHANISM ASSY Q8101 PICKUP ASSY Q8254 Q8252 Q8251 Q8253 CN1051 SIDE A (MYXK AND NVXK TYPES : ANP7172-C) CD ASSY (MYXJ AND NVXJ TYPES : ANP7144-E)
  • Page 35 XR-A660, XR-A550, XR-A330 SW ASSY MOTOR ASSY IC8201 IC8101 IC8301 SIDE B (MYXK AND NVXK TYPES : ANP7172-C) CD ASSY (MYXJ AND NVXJ TYPES : ANP7144-E)
  • Page 36 XR-A660, XR-A550, XR-A330 4.3 AF ASSY MECHANISM CN6201 UNIT AF ASSY VR2302 VR230 VR2802 VR280 SIDE A Q3081 Q2803 Q2804 Q2801 IC32 IC51 IC42 Q3352 Q3351...
  • Page 37 XR-A660, XR-A550, XR-A330 CN8004 CN5501 MECHANISM UNIT MECHANISM UNIT (XNP3008-C) VR2302 VR2301 VR2303 VR2306 VR2802 VR2801 IC2301 IC3301...
  • Page 38 XR-A660, XR-A550, XR-A330 AF ASSY (XNP3008-C) IC5891 IC2101 IC5892 Q3605 Q3608 Q2301 Q2204 Q2203 Q2 Q2802 Q2306 Q2105 Q3601 Q3603 Q2302 IC2201 SIDE B IC3301 Q3314 Q3313 Q3312 Q331...
  • Page 39 XR-A660, XR-A550, XR-A330 IC2101 Q2201 Q2202 Q5751 Q5752 IC5691 IC3001 Q2204 Q2203 Q2103 IC5751 IC3951 IC3101 IC3103 IC2201 Q3353 Q3354 Q2805 Q2807 Q3101 Q3102 Q3312 Q3311 Q3351 Q3352 IC42 IC51 IC32...
  • Page 40 XR-A660, XR-A550, XR-A330 4.4 SECONDARY and PRIMARY ASSEMBLIES SECONDARY ASSY IC71 IC11 IC31 IC12 IC41 IC21 IC22 (XNP3008-C) POWER TRANSFORMER (T1) (XNP3012-B) PRIMARY ASSY SIDE A...
  • Page 41 XR-A660, XR-A550, XR-A330 4.5 SUB TRANS ASSY SUB TRANS ASSY CN81 AC IN LIVE NEUTRAL (XNP3012-B) SIDE A...
  • Page 42 XR-A660, XR-A550, XR-A330 4.6 DISPLAY and CD SW LED ASSEMBLIES DISPLAY ASSY CN5101 MECHANISM UNIT CD SW LED ASSY (XNP3012-B) SIDE A...
  • Page 43 XR-A660, XR-A550, XR-A330 DISPLAY ASSY Q2903 Q2901 Q2906 Q2908 Q2907 Q5605 IC5601 Q2904 IC5501 Q2910 Q2911 Q5801 Q5502 Q5501 Q5821 IC5631 CD SW LED ASSY Q5606 Q5601 Q5604 IC3901 (XNP3012-B) SIDE B IC3931...

  • Page 44: Pcb Parts List

    XR-A660, XR-A550, XR-A330 Mark No. Description Part No. Mark No. Description Part No. 5. PCB PARTS LIST • Parts marked by "NSP" and can not be supplied. NOTES: • mark found on some component parts indicates the importance of the safety factor of the part.
  • Page 45 XR-A660, XR-A550, XR-A330 Mark No. Description Part No. Mark No. Description Part No. TRANSFORMERS OTHERS T6201 ATB7008 BN6202 AKA7001 ANTENNA TERMINAL T6101 ATE7002 X6202 CERAMIC RESONATOR ASS1066 (456kHz) X6201 CRYSTAL RESONATOR ASS1093 CAPACITORS (7.2000MHz) C6113, C6212, C6274, C6275, C6611 CCSQCH101J50...
  • Page 46 XR-A660, XR-A550, XR-A330 Mark No. Description Part No. Mark No. Description Part No. C8125 CKSQYB221K50 Q3313 DTA124EK C8107 CKSQYB223K50 Q2104, Q2105, Q3314, Q5752 DTC124EK C8110 CKSQYB331K50 Q2103, Q2306, Q2802, Q2807 DTC143EK C8115, C8128 CKSQYB332K50 Q3351 IRFI9Z34G C8113 CKSQYB333K25 Q3352 IRFIZ34G...
  • Page 47 XR-A660, XR-A550, XR-A330 Mark No. Description Part No. Mark No. Description Part No. CEAT222M35 X5751 CRYSTAL RESONATOR ASS7004 C2201, C2202, C2205, C2206 CEAT2R2M50 (4.332MHz) C2212, C2213, C2319, C2320 CEAT2R2M50 CN2302 KR CONNECTOR B2B-PH-K-S C3005–C3010, C3104 CEAT2R2M50 CN2303 KR CONNECTOR B3B-PH-K-R...
  • Page 48 XR-A660, XR-A550, XR-A330 Mark No. Description Part No. Mark No. Description Part No. RD1/4PU103J CAPACITORS R3081 RD1/4PU221J C3345, C3346 (10000pF) ACG7021 R3317, R3318 RD1/4PU393J C2303, C2304 (270pF) ACG7024 R3991, R3992 RS2LMF331J C2335–C2338 CCCCH270J50 R3601, R3602 RS3LMFR22J C2301, C2302 CCSQCH100D50 C3047, C3048 CCSQCH101J50 VR2802 (100kΩ)
  • Page 49 XR-A660, XR-A550, XR-A330 Mark No. Description Part No. Mark No. Description Part No. MTZJ8.2B RESISTORS D72, D76 S5688G R2812 RD1/2LMF270J R2809 RD1/2LMF4R7J COILS AND FILTERS RD1/2PM222J L3331, L3332 ATH-133 R3333, R3334 RD1/4LMF101J L2801 ATX7002 R3353, R3354 RD1/4PU101J L2301, L2302 LTA822J...
  • Page 50 XR-A660, XR-A550, XR-A330 Mark No. Description Part No. Mark No. Description Part No. CAPACITORS SUB TRANS ASSY C5812 (0.047F/5.5V) ACH1246 C5601 CCSQSL151J50 SEMICONDUCTORS C5821 CEJA100M16 IC81 NJM7805FA C5803 CEJA1R0M50 2SD1859X C5510, C5811, C5814 CEJA470M16 D85, D88–D90 1SS133 D81–D84 S5688G C5804...
  • Page 51 XR-A660, XR-A550, XR-A330 Mark No. Description Part No. Mark No. Description Part No. Q5606 DTC124EK Q2901, Q2904, Q2907, Q5502 DTC143EK CD SW LED ASSY Q5601–Q5603, Q5605, Q5821 DTC143EK D5594–D5596, D5631, D5811 1SS133 SEMICONDUCTORS D5551–D5554, D5563–D5568 1SS181 D5623 SLP3118C51H D5624 SLP7118C51H D2901–D2903, D5569, D5570, D5626 1SS355...

  • Page 52: Adjustment

    XR-A660, XR-A550, XR-A330 6. ADJUSTMENT 6.1 TUNER SECTION 6.1.1 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 i n i 1 ±...
  • Page 53 XR-A660, XR-A550, XR-A330 6.2 CASSETTE DECK SECTION 6.2.1 For XR-A660 • Adjustment points and test points are shown in Fig.3, Fig.5 and Fig.7. Mechanical Adjustment • Test tape: NCT-111 (3kHz, 30min). 1. Tape Speed Adjustment ± r i f &...
  • Page 54 XR-A660, XR-A550, XR-A330 0 dB 0 dB: 315 Hz, 250 nwb/m 10s ......................10s 315Hz –20 dB 12.5 10kHz 8kHz 6.3kHz 10kHz 315Hz 14kHz 4kHz 2kHz 1kHz 63Hz 40Hz Fig. 4 STD-331E Test Tape Playback Adjustment (1) Head Azimuth Adjustment •...
  • Page 55 XR-A660, XR-A550, XR-A330 Recording Adjustment (1) Bias Oscillation Frequency Adjustment                       l l i e l i l l i ±...
  • Page 56 XR-A660, XR-A550, XR-A330 AF ASSY SIDE A FRONT TAPE TEST POINT L ch R ch VR2303 VR2305 VR2302 VR2301 VR2304 VR2306 L2801 VR2802 VR2801 Fig.7 Adjustment and Measurement Points...
  • Page 57 XR-A660, XR-A550, XR-A330 6.2.2 For XR-A550 and XR-A330 • Adjustment points and test points are shown in Fig.8, Fig.10 and Fig.11. Mechanical Adjustment • Test tape: NCT-111 (3kHz, 30min). 1. Tape Speed Adjustment ± r i f & r i f ±...
  • Page 58 XR-A660, XR-A550, XR-A330 REV Azimuth Adjustment Screw FWD Azimuth Adjustment Screw Fig. 10 Head Azimuth Adjustment Screw Playback Adjustment (1) Head Azimuth Adjustment • Do not switch between forward and reverse operation with the screwdriver inserted. c i l Recording Adjustment (1) Bias Oscillation Frequency Adjustment ...
  • Page 59 XR-A660, XR-A550, XR-A330 SIDE B AF ASSY FRONT TAPE TEST POINT R ch L ch (VR is nothing) L2801 VR2301 VR2302 BIAS TP POINT VR2802 Fig.11 Adjustment and Measurement Points...

  • Page 60: Test Mode

    XR-A660, XR-A550, XR-A330 6.3 TEST MODE NOTE: There is no information to be shown in this CD adjustment. How to Start/Cancel Test Mode TEST MODE : ON TEST DISC: YEDS-7 CD TEST Short Point Function CD STANDBY/ON CD TEST "TEST 4"...

  • Page 61: General Information

    XR-A660, XR-A550, XR-A330 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. HA12136AF (AF ASSY : IC2201) • Dolby B Type NR System IC •...
  • Page 62 XR-A660, XR-A550, XR-A330 • Pin Function z i l LC75394NED (AF ASSY : IC3001) • Electrical Volume IC • Pin Function t i c t i c t i c t i c t i c t i c t i c...
  • Page 63 XR-A660, XR-A550, XR-A330 • Block Diagram LF4C3 RF4C3 LF4C2 RF4C2 LF4C1 RF4C1 LF3C3 RF3C3 LF3C2 RF3C2 LF3C1 RF3C1 LATCH LF2C3 RF2C3 LF2C2 RF2C2 LF2C1 RF2C1 DECODER LF1C3 RF1C3 LF1C2 RF1C2 LF1C1 RF1C1 SHIFT REGISTER LTIN RTIN LSELO RSELO LINVIN1 RINVIN1...
  • Page 64 XR-A660, XR-A550, XR-A330 STK407-070B (AF ASSY : IC3301)(XR-A660 and XR-A550) STK407-050B (AF ASSY : IC3301)(XR-A330) • Audio IC • Block Diagram TR21 TR14 TR13 TR18 TR11 TR23 TR16 TR15 TR20 TR10 TR22 TR12 TR24 TR17 TR19...
  • Page 65 XR-A660, XR-A550, XR-A330 PDC048A (DISPLAY ASSY : IC5501) • System Control Microcomputer • Pin Function – – – – – – – l a i – l a i l a i l a i...

  • Page 66: Block Diagram

    XR-A660, XR-A550, XR-A330 LC78622NE (CD ASSY : IC8301) • CD DSP IC • Block Diagram 64 11 32 33 62 23 8 DEFI VCO clock Slice level 2k × 8-bits RAM address control oscillator EFMIN generator clock control Interpolation Sync...
  • Page 67 XR-A660, XR-A550, XR-A330 − i g i e l l l a i l l u t s i l i u i - t y f i − − − − − l l i l l i −...

  • Page 68: Display

    XR-A660, XR-A550, XR-A330 7.1.2 DISPLAY 7 XAV3004 (DISPLAY ASSY : V5621)(XR-A660) • FL Display • Pin Assignment • Grid Assignment (2G) (2G to 9G) (7G) (9G) (9G) (16G to 10G)
  • Page 69 XR-A660, XR-A550, XR-A330 • Pin Connection Pin No. Connection F2 Pin No. Connection P7 NOTE 1) F1, F2... Filament 2) NP....No pin 3) DL....Datum Line 4) 1G to 16G..Grid • Anode Connection 3G to 6G 10G to 16G –...
  • Page 70 XR-A660, XR-A550, XR-A330 7 XAV3003 (DISPLAY ASSY : V5621) (XR-A550 and XR-A330) • FL Display • Pin Assignment • Grid Assignment (10G) (14G) (2G to 9G) • Pin Connection Pin No. Connection F2 Pin No. Connection P7 NOTE 1) F1, F2..Filament 2) NP....
  • Page 71 XR-A660, XR-A550, XR-A330 • Anode Connection 2G 3G to 6G 10G 11G 13G 14G B10 R10 B11 R11 B12 R12 – – – – – – – – – – – – – – – – – – – –...

  • Page 72: Disassembly

    XR-A660, XR-A550, XR-A330 7.2 DISASSEMBLY $M MECHANISM CD × 3 Bonnet Case × 2 × 2 × 2 × 2 × 2 Tray Cap Main Cam × 3 Note: The loading tray can be pulled out Unhook when the main cam is in this position.

  • Page 73: Front Panel

    XR-A660, XR-A550, XR-A330 FRONT PANEL Unhook Unhook CD SW LED Assy FM/AM TUNER MODULE (XR-A660 only) AF Assy Front Panel DISPLAY Assy SUB TRANS Assy PRIMARY Assy SECONDARY Assy $M MECHANISM CD ADDITIONAL TO JOB Mechanism Base (Bottom View) Front Side...
  • Page 74 XR-A660, XR-A550, XR-A330 Clamper Holder Servo Base Servo Mechanism Assy Hook Clamper Holder Hook Servo Base Hook $M Mechanism CD Actuater Actuater Hook FITTING THE PULLEY INTO THE CARRIAGE MOTOR For replacement of the carriage motor, fit the motor pulley by using the servicing...
  • Page 75 XR-A660, XA-A550, XA-A330...

  • Page 76: Block Diagram

    XR-A660, XR-A550, XR-A330 7.3 BLOCK DIAGRAM DUMMY TUNER IC3001 ZOOM BASS MODULE SURROUND BLASTER LC75394 (-2dB) FUNCTION $ MECH (-8dB) (200mV) (-8dB) TONE BUSS (3 BAND) TAPE DECK (-3.8dB) (+2dB) (-6dB) To R ch From R ch BASS BLASTER XR-A660 ONLY...
  • Page 77 XR-A660, XA-A550, XA-A330 IC3301 POWER AMP FRONT TOTAL GAIN (+26dB : XR-A660) MAIN VOL. (+24dB : XR-A550) STK407-050 (+27dB : XR-A330) (+38dB : XR-A660) (+36dB : XR-A550) HEAD (+39dB : XR-A330) PHONE CN3991 XR-A660 ONLY TAPE IC2301 IC2201 DECK REC IN...

  • Page 78: Panel Facilities And Specifications

    XR-A660, XR-A550, XR-A330 8. PANEL FACILITIES AND SPECIFICATIONS • PANEL FACILITIES 7 XR-A330, XR-A550 ¡ £ ¢ ™ ∞ § $ % ^ * & ¶•ªº DISC-1 select button & indicator ASES/COPY button DISC-2 select button & indicator TAPE Eject button (0) DISC-3 select button &...
  • Page 79 XR-A660, XR-A550, XR-A330 7 XR-A660 4 5 6 7 8 ¤ 1 2 3 ™ £ § ∞ ¶ ¢ • ª ^ & * ) ( ¡ º Ÿ ⁄ ≠ – DISC-1 indicator TAPE cassette door ¡ Dolby** Ÿ NR ON/OFF button DISC-2 indicator ™...
  • Page 80 XR-A660, XR-A550, XR-A330 7 XR-A330,XR-A550 7 8 9 0 7 XR-A660 Display section 1 Indicates Audio level. 2 Lights when the selected function is CD. 3 Lights when the selected function is TAPE. 4 Indicates CD and TAPE play status.
  • Page 81 XR-A660, XR-A550, XR-A330 Function button section REMOTE CONTROL UNIT DISC CD function button TUNER/BAND function button TAPE function button AUX function button DISPLAY button TUNING [1,4 (–), (+) ¢,¡] buttons STANDBY / ON button STOP button (7) SLEEP timer button PLAY/PAUSE button (2 3) SOUND MORPHING mode button &...

  • Page 82: Specifications

    XR-A330 (DIN) ............48 W + 48 W (1 kHz, T.H.D. 1 %, 6 Ω) Dimensions XR-A330, XR-A550, XR-A660 ..270 (W) x 300 (H) x 336 (D) mm Weight (without package) ÷ Above specifications are for when power supply is 230 V.

This manual is also suitable for:

Xr-a550Xr-a330

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