Pioneer XR-A880 Service Manual
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Pioneer XR-A880 Service Manual

Stereo cd cassette deck receiver
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STEREO CD CASSETTE DECK RECEIVER
XR-A880
XR-A770
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model
Type
XR-A880
DBDXJ
DXJ/NC
CONTENTS
1. SAFETY INFORMATION ...................................... 2
3. SCHEMATIC DIAGRAM ..................................... 14
4. PCB CONNECTION DIAGRAM .......................... 32
5. PCB PARTS LIST ............................................... 47
6. ADJUSTMENT .................................................... 55
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 Wheelock Place, Singapore 238880
PIONEER ELECTRONIC CORPORATION 1998
Power Requirement
XR-A770
AC110-127V/220-230V/240V
AC110-127V/220-230V/240V
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
• XR-A880
The Voltage can be converted by
the following method.
With the voltage selector
With the voltage selector
7. GENERAL INFORMATION ............................... 61
7.1 PARTS ......................................................... 61
7.1.1 IC ......................................................... 61
7.1.2 DISPLAY .............................................. 67
7.2 DISASSEMBLY ........................................... 69
7.3 BLOCK DIAGRAM ....................................... 72
ORDER NO.
RRV2008
T – IZK SEPT. 1998 Printed in Japan

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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 Wheelock Place, Singapore 238880 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

    See Contrast table (2) (0.03 × 230 × 340) Front Pad XHA3005 Rear Pad XHA3006 (2) CONTRAST TABLE XR-A880/DBDXJ, DXJ/NC, XR-A770/DBDXJ and DXJ/NC are constructed the same except for the following : Part No. Mark No. Symbol and Description Remarks XR-A880 XR-A880...
  • Page 4 XR-A880, XR-A770 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. Refer to "2.5 $M MECHANISM CD". XR-A770 Only...
  • Page 5 Bass Knob XAB3005 Screw BCZ30P080FZK Cord Stopper DNF1128 Push Rivet AEC7138 (2) CONTRAST TABLE XR-A880/DBDXJ, DXJ/NC, XR-A770/DBDXJ and DXJ/NC are constructed the same except for the following : Part No. Mark No. Symbol and Description Remarks XR-A880 XR-A880 XR-A770 XR-A770...
  • Page 6 XR-A880, XR-A770 2.3 EXTERIOR (2/2) XR-A880 ONLY XR-A770 XR-A880 XR-A880 ONLY Refer to "2.4 FRONT PANEL SECTION".
  • Page 7 XEC3008 Push Rivet See Contrast table (2) Shield Plate See Contrast table (2) (2) CONTRAST TABLE XR-A880/DBDXJ, DXJ/NC, XR-A770/DBDXJ and DXJ/NC are constructed the same except for the following : Part No. Mark No. Symbol and Description Remarks XR-A880 XR-A880...

  • Page 8: Front Panel Section

    XR-A880, XR-A770 2.4 FRONT PANEL SECTION 34(2/2) 34(1/2) Refer to "2.7 MECHANISM UNIT". XR-A880ONLY...
  • Page 9 Front Panel Assy See Contrast table (2) Function Button XZN3020 CD Button XZN3018 (2) CONTRAST TABLE XR-A880/DBDXJ, DXJ/NC, XR-A770/DBDXJ and DXJ/NC are constructed the same except for the following : Part No. Mark No. Symbol and Description Remarks XR-A880 XR-A880...
  • Page 10 XR-A880, XR-A770 2.5 $M MECHANISM CD Refer to "2.6 SERVO MECHANISM ASSY".
  • Page 11 XR-A880, XR-A770 2.6 SERVO MECHANISM ASSY • $M MECHANISM CD PARTS LIST Mark No. Description Part No. MOTOR Assy AWZ8428 SW Assy AWZ8429 CD Assy AWZ3050 • • • • • Servo Spring ABH7126 Belt AEB7072 Clamp Magnet AMF7001 Yoke...
  • Page 12 XR-A880, XR-A770 2.7 MECHANISM UNIT Mech. Ι Mech. Ι Only Only Mech. ΙΙ Only Mech. Ι Mech. ΙΙ Mech. Ι Mech. Ι Only Mech. ΙΙ...

  • Page 13: Table Of Contents

    XR-A880, XR-A770 • MECHANISM UNIT PARTS LIST Mark No. Description Part No. Plate HD BLK (Mech. Ι) F513-811 Plate HD BLK (Mech. ΙΙ) F513-819 Motor Main BLK (Mech. Ι only) F525-324 • • • • • PCB Control BLK (Mech. Ι only) F567-621...

  • Page 14: Schematic Diagram

    SERVO MECHANISM ASSY (AXA7039) CN8001 CN8002 CD ASSY(XWZ3050) FM/AM TUNER MODULE (AXQ7065) CN8004 AF ASSY (XR-A880 : XWZ3128) (XR-A770 : XWZ3106) DISPLAY ASSY (XR-A880 : XWZ3130) (XR-A770 : XWZ3109) DECK MECHA SUB DISPLAY ASSY (XR-A880 : XWZ3132) (XR-A770 : XWZ3112)
  • Page 15 XR-A880, XR-A770 Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST". REAR AMP ASSY SW ASSY (AWZ8429) (XR-A880:XWZ3160) MOTOR (XR-A770:XWZ3108) ASSY (AWZ8428) CN8003 XR-A880 TRADE LOGIC ASSY ASSY (XWZ3140)
  • Page 16 XR-A880, XR-A770 3.2 FM/AM TUNER MODULE MIX AMP RF AMP 1T378A BUFFER IF AMP FM +B SW MW RF TUNING BLOCK AKX7041 FM/AM TUNER MODULE (AXQ7065)
  • Page 17 XR-A880, XR-A770 AF AMP AF AMP REGULATOR...
  • Page 18 XR-A880, XR-A770 3.3 CD, MOTOR and SW ASSEMBLIES CD ASSY (XWZ3050) MOTOR ASSY (AWZ8428) CARRIAGE MOTOR J8502 D20PWW0405E SERVO MECHANISM ASSY AXA7039...
  • Page 19 XR-A880, XR-A770 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 C8307...
  • Page 20 XR-A880, XR-A770 3.4 AF ASSY (1/3) (REC) (REC) AF ASSY (PB) (XR-A880 : XWZ3128) (XR-A770 : XWZ3106) (REC) (PB) : DECK PB SIGNAL ROUTE (REC) : DECK REC SIGNAL ROUTE (REC) (REC) (PB) (PB) (PB) 220k 220k 0.01...
  • Page 21 XR-A880, XR-A770 IC2101(2/2) BA4558F–HT IC2101(1/2) (PB) BA4558F–HT (PB) (PB) (PB) (PB) (REC) (REC) (REC) (REC) (REC)
  • Page 22 XR-A880, XR-A770 CN8004 3.5 AF ASSY (2/3) (CD) (CD) (TA) (TA) (S/T) (S/T) (TA) R3019,R3020 XR-A880 : 1.8k XR-A770 : 3.9k XR-A770:XKB3002 XR-A880:VKB1060 (F/W) BA4558F-HT (PB) (CD) (PRO) (S/T) (S/T) (S/T) (PRO) CN3702 BA4558F-HT BA4558F-HT (F/W) (F/W) XR-A880 ONLY 100k...
  • Page 23 XR-A880, XR-A770 CN6201 AF ASSY (XR-A880 : XWZ3128) (XR-A770 : XWZ3106) (S/T) (TA) (S/T) (S/T) XR-A770 ONLY 5600p BA4558F-HT BA4558F-HT BA4558F-HT BA4558F-HT 5600p 1SS133 0.022 1SS133 BA4558F-HT BA4558F-HT BA4558F-HT 0.022 (F/W) (F/W) BA4558F-HT (F/W) (F/W) (PB) (TA) : TUNER AUDIO SIGNAL ROUTE...
  • Page 24 XR-A880, XR-A770 3.6 AF (3/3) and SECONDARY ASSEMBLIES J3401 R3421,R3422 R3423,R3424 : CENTER SIGNAL ROUTE XR-A880: 3.3k XR-A880: 1.8k (S/T) XR-A770: 5.6k XR-A770: 6.2k : SURROUND/TWEETER SIGNAL ROUTE (F/W) (S/T) : FRONT/WOOFER SIGNAL ROUTE (S/T) (S/T) D7674 (S/T) D7673 (S/T)
  • Page 25 LITTELFUSE INK. FOR IC23 (AEK7004). LITTELFUSE INK. FOR IC33 (AEK7013). CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. AF ASSY (XR-A880 : XWZ3128)(XR-A770 : XWZ3106) REPLACE ONLY WITH SAME TYPE NO. 4911.25 MFD, BY LITTELFUSE INK. FOR IC3331 (AEK7010).
  • Page 26 XR-A880, XR-A770 3.7 PRIMARY and SUB TRANS ASSEMBLIES SUB TRANS ASSY (AWZ3113) POWER TRANSFORMER AEK1059 AEK1059 PRIMARY ASSY (XWZ3111)
  • Page 27 XR-A880, XR-A770 REK1030 LIVE NEUTRAL...
  • Page 28 DISPLAY ASSY DISPLAY ASSY S5911 : DISPLAY S5912 : TIMER/CLOCK ADJ (XR-A880 : XWZ3130) S5913 : ENTER S5914 : P.BASS (XR-A880) (XR-A770 : XWZ3109) BALANCE (XR-A770) S5915 : ZOOM SURROUND S5916 : BASS BLASTER S5917 : EQUALIZER S5918 : PRESET...
  • Page 29 XR-A880, XR-A770 CN5401 CN5102 CN5502 52045–1445 CN5501 52045–3845 CN2901 52045–1945 XR-A880: 470 XR-A770: 1k XR-A880 ONLY D5563–D5568 1SS181 CD SW LED ASSY S5937 : OPEN/CLOSE ( S5938 : DISC CHANGE S5939 : DISC-3 S5940 : DISC-2 S5941 : DISC-1 D5553,D5554 D5555,D5556 D5557–D5560...
  • Page 30 ONLY (XR-A770) S5404 : PRO LOGIC MODE (XR-A880) XR-A770 ONLY D5414,D5416 XR-A770 (RED) ONLY XR-A880 ONLY (RED) REAR AMP ASSY (XR-A880 : XWZ3160) (XR-A770 : XWZ3108) (S/T) (S/T) (S/T) XR-A770 ONLY (S/T) (S/T) (S/T) : CENTER SIGNAL ROUTE (S/T) : SURROUND/TWEETER SIGNAL ROUTE...
  • Page 31 XR-A880, XR-A770 3.10 TRADE and PRO LOGIC ASSEMBLIES (XR-A880 ONLY) PRO LOGIC ASSY (XWZ3133) (PRO) (PRO) (PRO) : AUDIO SIGNAL ROUTE : SURROUND SIGNAL ROUTE : CENTER SIGNAL ROUTE (PRO) : PRO LOGIC SIGNAL ROUTE KP200TA13L TRADE ASSY (XWZ3140) CN3701...

  • Page 32: Pcb Connection Diagram

    XR-A880, XR-A770 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-A880, XR-A770 4.1 FM/AM TUNER MODULE CN3051 FM/AM TUNER MODULE VR6201 Q6204 Q6203 SIDE A FM/AM TUNER MODULE IC6201 Q6201 Q6202 Q6301 Q6303 Q6302 Q6304 Q6401 IC6202 Q6403 Q6214 Q6306 Q6402 Q6404 Q6205 (ANP7159-B) SIDE B...
  • Page 34 XR-A880, XR-A770 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 (ANP7144-E) CD ASSY B C D...
  • Page 35 XR-A880, XR-A770 SW ASSY MOTOR ASSY IC8201 IC8101 IC8301 SIDE B (ANP7144-E) CD ASSY B C D...
  • Page 36 XR-A880, XR-A770 4.3 AF ASSY AF ASSY CN3702 FAN MOTOR CN83 VR280 Q3081 Q3081 IC23 IC32 Q51 Q52 Q57 IC42 IC51...
  • Page 37 XR-A880, XR-A770 CN8004 CN5501 CN6201 J3401 MECHANISM UNIT SIDE A (XNP3009-B) VR2802 VR2801 VR2301-VR2306 IC2301 Q51 Q52 Q57 Q2801 Q2804 IC51 IC3331 IC3301 Q2802...
  • Page 38 XR-A880, XR-A770 AF ASSY SIDE B IC5892 IC5891 Q2306 Q2105 Q2104 IC2201 Q5751 Q5752 Q2802 Q2805-Q2807 IC2101 Q2103 IC5751 IC5751 Q2301 Q3353 Q3354 Q2203 Q2204 Q3607 Q3622 Q3611 Q3606 Q3605 Q3311-Q3314...
  • Page 39 XR-A880, XR-A770 (XNP3009-B) 5751 Q5752 IC3101-IC3103 Q3101 Q3102 IC3001 5751 IC5751 IC3381 Q3401-Q3403 IC3201-IC3203 Q3202 Q3201 Q2203 Q2204 Q56 Q53 Q55 IC34 Q33 3311-Q3314...
  • Page 40 XR-A880, XR-A770 4.4 SECONDARY ASSY SECONDARY ASSY IC41 IC71 IC21 IC22 IC31 SIDE A SECONDARY ASSY (XNP3009-B) SIDE B...
  • Page 41 XR-A880, XR-A770 4.5 PRIMARY and SUB TRANS ASSEMBLIES POWER TRANSFORMER PRIMARY ASSY AC IN SUB TRANS ASSY (XNP3013-B) SIDE A...
  • Page 42 XR-A880, XR-A770 4.6 DISPLAY and CD SW LED ASSEMBLIES DISPLAY CN5102 ASSY MECHANISM UNIT CD SW ASSY (XNP3013-B) SIDE A CN5401...
  • Page 43 XR-A880, XR-A770 DISPLAY ASSY Q2901 Q2903 Q2906 Q2908 Q5605 IC5601 Q2904 IC5501 Q2910 Q5502 Q5501 Q5821 IC5631 CD SW ASSY Q5601 Q5606 Q5604 IC3901 SIDE B (XNP3013-B) IC3931...
  • Page 44 XR-A880, XR-A770 4.7 REAR AMP, TRADE and PRO LOGIC ASSEMBLIES CN3401 REAR AMP ASSY (XNP3009-B) CN3701 TRADE ASSY (XNP3009-B) PRO LOGIC ASSY (XNP3013-B) SIDE A L M N...
  • Page 45 XR-A880, XR-A770 REAR AMP ASSY (XNP3009-B) PRO LOGIC ASSY (XNP3013-B) SIDE B...
  • Page 46 XR-A880, XR-A770 4.8 SUB DISPLAY ASSY SUB DISPLAY ASSY IC5411 Q5411 Q5415 SIDE A SIDE B CN5502 (XNP3013-B)

  • Page 47: Pcb Parts List

    XR-A880, XR-A770 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 48 XR-A880, XR-A770 Mark No. Description Part No. Mark No. Description Part No. CAPACITORS CD ASSY C6208 CCSQCH100D50 C6212,C6274,C6275,C6408 CCSQCH101J50 SEMICONDUCTORS C6412 CCSQCH102J50 IC8201 BA5923FP C6221,C6222,C6416 CCSQCH150J50 IC8101 LA9241ML C6271 CCSQCH200J50 IC8301 LC78622NE Q8101 2SA1048 C6415 CCSQCH330J50 Q8251,Q8252 2SB1237X C6406 CCSQCH331J50...
  • Page 49 XR-A880, XR-A770 Mark No. Description Part No. Mark No. Description Part No. D3051,D3601,D3604,D3623,D3624 1SS355 MOTOR ASSY D5891 1SS355 D3355,D3356 20E2-FC SWITCH GBU4D D3357,D3358 MTZJ10C S8503 ASG7009 D3083 MTZJ11C OTHERS MTZJ20A J8502 JUMPER WIRE 4P D20PWW0405E MTZJ22D MOTOR PULLEY PNW1634 D3363,D3364...
  • Page 50 XR-A880, XR-A770 Mark No. Description Part No. Mark No. Description Part No. C3325 CEATR47M50 CN2302 KR CONNECTOR B2B-PH-K-S C35,C43 CEHAQ100M50 CN2303 KR CONNECTOR B3B-PH-K-R C32,C42 CEHAQ1R0M50 CN2301 KR CONNECTOR 3P B3B-PH-K-S C3601 CEHAQ221M16 JUMPER WIRE 4P D20PYY0440E C3027,C3028 CFTLA334J50 CN3051...
  • Page 51 XR-A880, XR-A770 Mark No. Description Part No. Mark No. Description Part No. D3363,D3364 MTZJ39C C1922,C1993-C1995,C1998,C1999 CKSQYB103K50 D3401 MTZJ4.7B C2315,C2317,C2318,C3053,C3103 CKSQYB103K50 D2001 MTZJ6.2A C3209,C3210 CKSQYB103K50 MTZJ6.8C C1997,C2191,C2193,C3097,C3099 CKSQYB104K25 D7673,D7674 U1GC44 C3652 CKSQYB104K25 C3033,C3034 CKSQYB122K50 COILS AND FILTERS C2208,C2209 CKSQYB152K50 L3331,L3332 AF CHOKE COIL...
  • Page 52 XR-A880, XR-A770 Mark No. Description Part No. Mark No. Description Part No. COIL CN3051 14P PLUG KM200IB14 PCB BINDER VEF1040 L1 LINE FILTER ATF1136 JA3001,JA3441 XKB3002 J3051 CONNECTOR ASSY 2P XDX3002 TRANSFORMER CN3991 HEADPHONE JACK XKN3002 ATT7027 CAPACITORS CEAT100M50 SECONDARY ASSY...
  • Page 53 XR-A880, XR-A770 Mark No. Description Part No. Mark No. Description Part No. SWITCHES SUB DISPLAY ASSY S5951 ASX7004 S5952 ASX7017 (1) CONTRAST TABLE S5911-S5931 XSG3001 XWZ3132 and XWZ3112 are constructed the same except for the following : CAPACITORS Part No.
  • Page 54 XR-A880, XR-A770 Mark No. Description Part No. Mark No. Description Part No. REAR AMP ASSY PRO LOGIC ASSY (1) CONTRAST TABLE SEMICONDUCTORS XWZ3160 and XWZ3108 are constructed the same except IC3701 LV1035M D3701,D3702 1SS133 for the following : Part No.

  • Page 55: Adjustment

    XR-A880, XR-A770 6. ADJUSTMENT 6.1 TUNER SECTION 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...

  • Page 56: Mechanical Adjustment

    XR-A880, XR-A770 6.2 CASSETTE DECK SECTION • 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 & r i f ±...
  • Page 57 XR-A880, XR-A770 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 58 XR-A880, XR-A770 Recording Adjustment (1) Bias Oscillation Frequency Adjustment                       l l i e l i l l i ±...
  • Page 59 XR-A880, XR-A770 AF ASSY SIDE A FRONT TAPE TEST POINT R ch VR2303 VR2305 L ch VR2301 VR2302 VR2306 VR2304 VR2802 VR2801 L2801 Fig.7 Adjustment and Measurement Points...

  • Page 60: Test Mode

    XR-A880, XR-A770 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-A880, XR-A770 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-A880, XR-A770 • Pin Function z i l LC75396NE (AF ASSY : IC3001) • Electrical Volume IC • Block Diagram LSELO LFCOM LINVIN1 LFOUT LRIN LRCOM LROUT LVref LVref CONTROL LOGIC CIRCUIT CIRCUIT INTERFACE Vref RVref RVref RROUT RINVIN1 RRCOM...
  • Page 63 XR-A880, XR-A770 PDC049A (DISPLAY ASSY : IC5501) • System Control Microcomputer • Pin Function – – – – – – l a i – l a i l a i l a i...
  • Page 64 XR-A880, XR-A770 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 mute...
  • Page 65 XR-A880, XR-A770 − 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 − l l i...
  • Page 66 XR-A880, XR-A770 LV1035M (PRO LOGIC ASSY : IC3701) • Dolby Pro Logic Decoder IC • Block Diagram L-BPF3 DCOUT3 R-RECT DCOUT4 23PIN L-RECT 15PIN VLR-TH VLR-1 DC-OUT VLR-2 DC-OUT VCS-2 L-OUT VCS-1 R-OUT VCS-TH S-OUT L+R-RECT DCOUT2 IREF L-R-RECT DCOUT1...

  • Page 67: Display

    XR-A880, XR-A770 7.1.2 DISPLAY 7 XAV3004 (DISPLAY ASSY : V5621) • FL Display • Pin Assignment • Grid Assignment (2G) (2G to 9G) (7G) (9G) (9G) (16G to 10G)
  • Page 68 XR-A880, XR-A770 • 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 69: Disassembly

    XR-A880, XR-A770 7.2 DISASSEMBLY $M MECHANISM CD × 3 × 3 Bonnet Case × 3 × 3 × 2 × 3 Tray Cap × 3 Main Cam Unhook Note: The loading tray can be pulled out when the main cam is in this position.

  • Page 70: Front Panel

    XR-A880, XR-A770 FRONT PANEL Unhook Unhook CD SW LED Assy FM/AM TUNER MODULE AF Assy TRADE Assy (XR-A880 only) Front Panel DISPLAY Assy SUB TRANS Assy Mechanism Unit Release the jumper wire from Clip B. PRO LOGIC Assy (XR-A880 only)
  • Page 71 XR-A880, XR-A770 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 72: Block Diagram

    XR-A880, XR-A770 7.3 BLOCK DIAGRAM DUMMY TUNER IC3001 ZOOM BASS MODULE SURROUND BLASTER LC75396 (-2dB) $ MECH (-8dB) (200mV) BASS TREBLE TAPE DECK (-3.8dB) (+2dB) (-6dB) PROLOGIC LV1035M IC3701 To R ch From R ch BASS REAR CENTER BLASTER TRIM : -10dB...
  • Page 73 XR-A880, XR-A770 IC3381 IC3301 (XR-A880 : +5dB) POWER AMP (XR-A770 : +8dB) RY3601 FRONT TOTAL GAIN +42dB STK407-090 (+40dB) HEAD PHONE CN3901 IC3401 POWER AMP REAR XR-A880 ONLY CENTER TWEETER IC3951 TDA8560Q IC3421 (+40dB) (XR-A880 : +9dB) (XR-A770 : +5dB)

  • Page 74: Panel Facilities And Specifications

    XR-A880, XR-A770 8. PANEL FACILITIES AND SPECIFICATIONS • PANEL FACILITIES 4 5 6 7 8 ¤ 1 2 3 ™ £ § ∞ ¶ ¢ • ª ^ & * ) ( ¡ º Ÿ ⁄ ≠ – DISC-1 indicator...
  • Page 75 XR-A880, XR-A770 7 For models XR-A770 and XR-A880 Display section Displays timer function indications. Indicates CD function status. Lights during recording. Lights during ASES operation. Lights during Sleep Timer operation. Indicates tuner operation status. Displays a wide range of operation status indications.
  • Page 76 TUNING [1, 4 (–), (+) ¢, ¡] buttons STOP button (7) PLAY/PAUSE button (2 3) REMOTE CONTROL UNIT For moders XR-A880 ÷ Roles of the common operation buttons. (The usage of the buttons vary depending on the input functions as shown below.)
  • Page 77 XR-A880, XR-A770 REMOTE CONTROL UNIT For moders XR-A770 REMOTE CONTROL UNIT For moders XR-A880 1 OPEN/CLOSE button 1 OPEN/CLOSE button 2 DISC CHANGE button 2 DISC CHANGE button 3 PGM button 3 PGM button 4 SLEEP timer button 4 SLEEP timer button...

  • Page 78: Specifications

    <XR-A880> Dimensions Continuous Power Output (RMS) XR-A770, XR-A880 ....270 (W) x 380 (H) x 343 (D) mm FRONT ......120 W + 120 W (1 kHz, T.H.D. 10%, 6 Ω) Weight (without package) REAR ....... 30 W + 30 W (1 kHz, T.H.D. 10%, 4 Ω) XR-A770, XR-A880 ...............

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Xr-a770

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