Pioneer XR-A660 User manual

ORDER NO.
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
RRV2047
CONTENTS
T – ZZK OCT. 1998 Printed in Japan
1. SAFETY INFORMATION ...................................... 2
2. EXPLODED VIEWS AND PARTS LIST................ 3
3. SCHEMATIC DIAGRAM ..................................... 16
4. PCB CONNECTION DIAGRAM.......................... 32
5. PCB PARTS LIST ............................................... 44
6. ADJUSTMENT .................................................... 52
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
8. PANEL FACILITIES AND SPECIFICATIONS.... 78
STEREO CD CASSETTE DECK RECEIVER
XR-A660
XR-A550
XR-A330
Type Model Power Requirement Remarks
XR-A660 XR-A550 XR-A330
MYXK – – AC220-230V
NVXK – – AC230V
MYXJ – AC220-230V
NVXJ – AC230V
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
XR-A660

2
XR-A660, XR-A550, XR-A330
Printed on the Rear Panel
NVXJ TypeNVXK Type
MYXK and MYXJ Types
MYXK Type
(XR-A550)
(XR-A330)
(XR-A660)
MYXJ Type
LABEL CHECK
Additional Laser Caution
1.Laser Interlock Mechanism
The position of the switch (S8501) for detecting loading
state is detected by the system microprocessor, and
the design prevents laser diode oscillation when the
switch (S8501) is pressed physically.
Thus,theinterlockwillnolongerfunctioniftheswitch(S8501)
is released physically and deliberatery.
The interlock also does not function in the test mode ∗ .
Laser diode oscillation will continue, if pin 62 of
LA9240ML (IC8101) on the CD ASSY mounted on the
$M Loading Mechanism assembly is connected to GND,
or else the terminals of Q8101 are shorted to each other
(fault condition).
2.Whenthecoverisopened,close viewing of the objective
lens with the naked eye will cause exposure to a Class
1 laser beam.
∗ : Refer to page 60.
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.
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.
IMPORTANT
THIS PIONEER APPARATUS CONTAINS
LASER OF CLASS 1.
SERVICING OPERATION OF THE APPARATUS
SHOULD BE DONE BY A SPECIALLY
INSTRUCTED PERSON.
LASER DIODE CHARACTERISTICS
MAXIMUM OUTPUT POWER: 1.3 mW
WAVELENGTH: 790 nm ±25 nm

3
XR-A660, XR-A550, XR-A330
kraM.oNnoitpircseDdnalobmyS .oNtraP skrameR
066A-RX KXYM/ 066A-RX KXVN/ 055A-RX JXYM/ 055A-RX JXVN/ 033A-RX JXYM/ 033A-RX JXVN/
3annetnApooLMA7007BTA7007BTA1003BTX1003BTX1003BTX1003BTX
PSN6 )AA,P6R(yrettaBlleCyrD1007XEA1007XEA310-MEV310-MEV310-MEV310-MEV
PSN7 gaBerutaretiL1901GHA1901GHAdesutoNdesutoNdesutoNdesutoN
730.0(gaBgolataC ×032 ×)043desutoNdesutoN830-12Z830-12Z830-12Z830-12Z
8daPtnorF7003AHX7003AHX3003AHX7003AHX3003AHX7003AHX
9daPraeR8003AHX8003AHX4003AHX8003AHX4003AHX8003AHX
01esaCgnikcaP6403DHX6403DHX3503DHX1703DHX4603DHX9603DHX
21)A5T(esuFdesutoN1007KEAdesutoN6401KEAdesutoN6401KEA
31droCrewoP0107GDA9007GDA4511GDA6511GDA4511GDA6511GDA
PSN41gaBenelyhteyloP3307GHAdesutoN3307GHAdesutoN3307GHAdesutoN
81snoitcurtsnIgnitarepO3003CRXdesutoN3003CRXdesutoN3003CRXdesutoN
)hctuD/namreG/nailatI(
91snoitcurtsnIgnitarepO4003CRXdesutoN4003CRXdesutoN4003CRXdesutoN
)hsinapS/hsidewS/eseugutroP(
VOL
KARAOKESFC
DISC DISC DISC
CLEAR
STATION
REMOTECONTROLUNIT CU-XR025
MONO BAND
PGM
REPEATRANDOM
AUX
P.BASSDISPLAY
SLEEP
POWER
1
3
MYXK and MYXJ
Types Only
MYXK and MYXJ
Types Only
NVXK and NVXJ
Types Only
7
8(1/2)
11
16
9(1/2)
13
17
4
9(2/2)
9
10
8(2/2)
512
2
13 14
1819
6MYXJ Type Only
MYXJ Type Only
2.1 PACKING
1 FM Antenna ADH7005
2 Operating Instructions XRE3014
(English/French)
3 AM Loop Antenna See Contrast table (2)
4 Remote Control Unit XZN3006
(CU-XR048)
5 Battery Cover AZA7204
NSP 6 Dry Cell Battery (R6P, AA) See Contrast table (2)
NSP 7 Literature Bag See Contrast table (2)
8 Front Pad See Contrast table (2)
9 Rear Pad See Contrast table (2)
(1) PACKING PARTS LIST
Mark No. Description Part No.
2. EXPLODED VIEWS AND PARTS LIST
NOTES: •Parts marked by "NSP" and can not be supplied.
•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.
10 Packing Case See Contrast table (2)
11 Packing Sheet AHG7049
12 Fuse (T5A) See Contrast table (2)
13 Power Cord See Contrast table (2)
NSP 14 Polyethylene Bag See Contrast table (2)
15 • • • • •
NSP 16 Door Spacer XHG3002
NSP 17 Warranty Card ARY7022
18 Operating Instructions See Contrast table (2)
19 Operating Instructions See Contrast table (2)
Mark No. Description Part No.
(2) CONTRAST TABLE
XR-A660/MYXK, NVXK, XR-A550/MYXJ, NVXJ, XR-A330/MYXJ and NVXJ are constructed the same except for the
following :

4
XR-A660, XR-A550, XR-A330
2.2 EXTERIOR (1/2)
13, 14
3
19
20
9
5
4
6
10
2
12
Note :
Attatch on the same numbers ×three.
12
Refer to
"2.5 $M MECHANISM CD".
7
Note :
Hook Tray cap on top of loading tray and then
insert the bottom three hooks.
8
9
9
11
11
15
18
11
15
1
17
16
XR-A660 only
XR-A660 only
XR-A550,
XR-A330
only
19

5
XR-A660, XR-A550, XR-A330
(1) EXTERIOR (1/2) PARTS LIST
Mark No. Description Part No.
(2) CONTRAST TABLE
XR-A660/MYXK, NVXK, XR-A550/MYXJ, NVXJ, XR-A330/MYXJ and NVXJ are constructed the same except for the
following :
1 F.F.C/30V See Contrast table (2)
NSP 2 $M Mechanism CD See Contrast table (2)
3 Volume Knob See Contrast table (2)
4 FL Cover A See Contrast table (2)
5 FL Cover B See Contrast table (2)
6 Tray Cap See Contrast table (2)
7 Display Panel See Contrast table (2)
8 Bonnet Case See Contrast table (2)
9 Screw BPZ30P100FZK
10 Pioneer Badge AZN3049
11 Screw VBT30P080FZK
12 Disc Label XAX3127
13 Jog Knob Assy See Contrast table (2)
14 Jog Knob See Contrast table (2)
15 Screw BCZ30P060FZK
16 Cord Clamper See Contrast table (2)
NSP 17 Cord Stopper See Contrast table (2)
18 Push Rivet See Contrast table (2)
19 Cushion Rubber XEB3002
20 Screw VBZ30P080FZK
kraM.oNnoitpircseDdnalobmyS .oNtraP skrameR
066A-RX KXYM/ 066A-RX KXVN/ 055A-RX JXYM/ 055A-RX JXVN/ 033A-RX JXYM/ 033A-RX JXVN/
1V03/C.F.FP228103DDX8103DDX8103DDX8103DDXdesutoNdesutoN
1V03/C.F.FP02desutoNdesutoNdesutoNdesutoN7103DDX7103DDX
PSN2 DCmsinahceMM$6003AXX6003AXX6003AXX6003AXX5003AXX5003AXX
3bonKemuloV5003AAX5003AAX7003AAX7003AAX7003AAX7003AAX
4ArevoCLF6203KAX6203KAXdesutoNdesutoNdesutoNdesutoN
5BrevoCLF6303KAX6303KAXdesutoNdesutoNdesutoNdesutoN
6paCyarT7403NZX7403NZX8403NZX8403NZX8403NZX8403NZX
7lenaPyalpsiD4503KAX4503KAX1503KAX1503KAX3503KAX3503KAX
8esaCtennoB2603NZX2603NZX5403NZX5403NZX5403NZX5403NZX
31yssAbonKgoJ3203GXX3203GXXdesutoNdesutoNdesutoNdesutoN
41bonKgoJdesutoNdesutoN8003AAX8003AAX8003AAX8003AAX
61repmalCdroC481-HNR481-HNRdesutoNdesutoNdesutoNdesutoN
PSN71reppotSdroCdesutoNdesutoN8211FND8211FND8211FND8211FND
81teviRhsuPdesutoNdesutoN8317CEA8317CEA8317CEA8317CEA

6
XR-A660, XR-A550, XR-A330
2.3 EXTERIOR (2/2)
Refer to
"2.4 FRONT PANEL SECTION".
8
17
13
19
19
3
5
21
2
XR-A660,
XR-A550
only
XR-A660,
XR-A550
only
XR-A550,
XR-A330
only
XR-A660
only
28 27 19
14
15 9
4
712
1
22
22
32
24
24
20
24
24
24
24
19
26
33
19
19
19 31
29
11
XR-A550,
XR-A330
only
NVXK and NVXJ
Types only
NVXK and
NVXJ Types
only
10 MYXK and MYXJ
Types only
25
MYXK and MYXJ Types only
19
XR-A660
only

7
XR-A660, XR-A550, XR-A330
(1) EXTERIOR (2/2) PARTS LIST
Mark No. Description Part No.
(2) CONTRAST TABLE
XR-A660/MYXK, NVXK, XR-A550/MYXJ, NVXJ, XR-A330/MYXJ and NVXJ are constructed the same except for the
following :
1 AF Assy See Contrast table (2)
2 SECONDARY Assy See Contrast table (2)
3 PRIMARY Assy XWZ3066
4 FM/AM TUNER MODULE See Contrast table (2)
5 T1 Power Transformer See Contrast table (2)
6 • • • • •
7 FU1 Fuse See Contrast table (2)
NSP 8 Chassis XNA3001
NSP 9 Caution Label See Contrast table (2)
NSP 10 Caution Label See Contrast table (2)
11 PCB Bracket XNG3006
12 Ceramic Capacitor See Contrast table (2)
13 Heat Sink See Contrast table (2)
14 Wire Clip XEC3002
15 Rear Panel See Contrast table (2)
16 • • • • •
NSP 17 SUPPORT Assy XNP3008
18 • • • • •
19 Screw VBZ30P080FZK
20 Screw ABA-115
21 Screw ASZ40P060FMC
22 Binder ZCA-SKB90BK
23 • • • • •
24 Screw BPZ30P100FZK
25 Caution Label See Contrast table (2)
NSP 26 Name Label See Contrast table (2)
27 ICP Label See Contrast table (2)
28 ICP Label See Contrast table (2)
29 SUB TRANS Assy XWZ3067
30 • • • • •
NSP 31 Fuse Card See Contrast table (2)
32 Locking Spacer See Contrast table (2)
33 Card Spacer See Contrast table (2)
Mark No. Description Part No.
kraM.oNnoitpircseDdnalobmyS .oNtraP skrameR
066A-RX KXYM 066A-RX KXVN/ 055A-RX JXYM/ 055A-RX JXVN/ 033A-RX JXYM/ 033A-RX JXVN/
1yssAFA7903ZWX7903ZWX7703ZWX7703ZWX3603ZWX3603ZWX
2yssAYRADNOCES8903ZWX8903ZWX8903ZWX8903ZWX4603ZWX4603ZWX
4ELUDOMRENUTMA/MF7707QXA7707QXA8607QXA8607QXA8607QXA8607QXA
5remrofsnarTrewoP1T6103STX6103STX6103STX6103STX3103STX3103STX
7)A2T(esuF1UF7501KEA7501KEA7501KEA7501KEAdesutoNdesutoN
7)A6.1T(esuF1UFdesutoNdesutoNdesutoNdesutoN6501KEA6501KEA
PSN9 lebaLnoituaCdesutoN0501WRAdesutoNdesutoNdesutoNdesutoN
9lebaLnoituaCdesutoNdesutoNdesutoN8101WRPdesutoN8101WRP
PSN01lebaLnoituaC9401WRAdesutoNdesutoNdesutoNdesutoNdesutoN
01lebaLnoituaCdesutoNdesutoN4901WRVdesutoN4901WRVdesutoN
21roticapaCcimareC
05K201BYUPKC05K201BYUPKC05K201BYCKC05K201BYCKC05K201BYUPKC05K201BYUPKC
31kniStaeH2003HNX2003HNX2003HNX2003HNX3003HNX3003HNX
51lenaPraeR0103CNX0103CNX5003CNX5003CNX6103CNX6103CNX
52lebaLnoituaC3321WRPdesutoN3321WRPdesutoN3321WRPdesutoN
PSN62lebaLemaNdesutoN7003LAXdesutoN6203LAXdesutoN2203LAX
72lebaLPCI0213XAX0213XAX0213XAX0213XAXdesutoNdesutoN
82lebaLPCI1213XAX1213XAX1213XAX1213XAXdesutoNdesutoN
PSN13draCesuF6207XAA6207XAA7532XAA7532XAA7732XAA7732XAA
23recapSgnikcoLdesutoNdesutoN9003CEX9003CEX9003CEX9003CEX
33recapSdraCdesutoNdesutoN8003CEX8003CEX8003CEX8003CEX

8
XR-A660, XR-A550, XR-A330
2.4 FRONT PANEL SECTION
XR-A660
only
XR-A550,
XR-A330 only
XR-A550,
XR-A330 only
XR-A660 only
XR-A660 only
XR-A660 only 17
26
17
17
17
1
7
8
32
14
16
20
37
29
36
34(2/2)
35
34(1/2)
24
17
17
17
12
Refer to "2.7 and 2.8
MECHANISM UNIT".
10
9
5
4
19
21
13
18
15
21
33
27 30
28 31
17
25
25
23
2
XR-A550,
XR-A330 only
XR-A550,
XR-A330 only
38
34
17
6

9
XR-A660, XR-A550, XR-A330
(1) FRONT PANEL SECTION PARTS LIST
Mark No. Description Part No.
(2) CONTRAST TABLE
XR-A660/MYXK, NVXK, XR-A550/MYXJ, NVXJ, XR-A330/MYXJ and NVXJ are constructed the same except for the
following :
Mark No. Description Part No.
kraM.oNnoitpircseDdnalobmyS .oNtraP skrameR
066A-RX KXYM/ 066A-RX KXVN/ 055A-RX JXYM/ 055A-RX JXVN/ 033A-RX JXYM/ 033A-RX JXVN/
1yssAYALPSID9903ZWX9903ZWX9703ZWX9703ZWX5603ZWX5603ZWX
2yssADELWSDC6803ZWX6803ZWXdesutoNdesutoNdesutoNdesutoN
4P2yssArotcennoCdesutoNdesutoN2103EDX2103EDX2103EDX2103EDX
5P4yssArotcennoCdesutoNdesutoN1103EDX1103EDX1103EDX1103EDX
7P91elbaCelbixelF9003DDX9003DDXdesutoNdesutoNdesutoNdesutoN
7P71elbaCelbixelFdesutoNdesutoN0103DDX0103DDX0103DDX0103DDX
9P3yssArotcennoC1003EDX1003EDX9003EDX9003EDX9003EDX9003EDX
01P5yssArotcennoC2003EDX2003EDXdesutoNdesutoNdesutoNdesutoN
21tinUmsinahceM3003MYX3003MYX2003MYX2003MYX2003MYX2003MYX
PSN32yssAlenaPtnorF9103GXX9103GXX3103GXX3103GXX1103GXX1103GXX
42nottuBnoitcnuF0203NZX0203NZX1203NZX1203NZX1203NZX1203NZX
52nottuBDC8103NZX8103NZX9103NZX9103NZX9103NZX9103NZX
62sneLDC7303NZX7303NZXdesutoNdesutoNdesutoNdesutoN
PSN92sneLgoJ5203KAX5203KAXdesutoNdesutoNdesutoNdesutoN
03LtekcoProoD3103NZX3103NZX4103NZX4103NZX4103NZX4103NZX
13RtekcoProoD5103NZX5103NZX6103NZX6103NZX6103NZX6103NZX
23lenaPtnorF1103NZX1103NZX2103NZX2103NZX2103NZX2103NZX
33lenaPbuS3403NZX3403NZX2403NZX2403NZX2403NZX2403NZX
43nottuBrewoP2203NZX2203NZX3203NZX3203NZX3203NZX3203NZX
53nottuByalP4203NZX4203NZXdesutoNdesutoNdesutoNdesutoN
63nottuB.C.S5203NZX5203NZX7203NZX7203NZX7203NZX7203NZX
73nottuBREMIT9203NZX9203NZX0303NZX0303NZX0303NZX0303NZX
83redniBdesutoNdesutoN KB09BKS-ACZKB09BKS-ACZKB09BKS-ACZKB09BKS-ACZ
1 DISPLAY Assy See Contrast table (2)
2 CD SW LED Assy See Contrast table (2)
3 • • • • •
4 Connector Assy 2P See Contrast table (2)
5 Connector Assy 4P See Contrast table (2)
NSP 6 Cord With Plug DE007VE0
7 Flexible Cable See Contrast table (2)
8 Flexible Cable 38P XDD3004
9 Connector Assy 3P See Contrast table (2)
10 Connector Assy 5P See Contrast table (2)
11 • • • • •
12 Mechanism Unit See Contrast table (2)
13 Door Spring L XBH3001
14 Door Spring R XBH3002
15 Latch Spring L ABH7130
16 Latch Spring R ABH7131
17 Screw BPZ30P100FZK
18 Latch Mold L XMR3001
19 Latch Mold R XMR3002
20 GND Plate B XNG3005
21 Damper Assy AXA7052
22 • • • • •
NSP 23 Front Panel Assy See Contrast table (2)
24 Function Button See Contrast table (2)
25 CD Button See Contrast table (2)
26 CD Lens See Contrast table (2)
27 Deck Lens L XZN3035
28 Deck Lens R XZN3036
NSP 29 Jog Lens See Contrast table (2)
30 Door Pocket L See Contrast table (2)
31 Door Pocket R See Contrast table (2)
32 Front Panel See Contrast table (2)
33 Sub Panel See Contrast table (2)
34 Power Button See Contrast table (2)
35 Play Button See Contrast table (2)
36 S.C. Button See Contrast table (2)
37 TIMER Button See Contrast table (2)
38 Binder See Contrast table (2)

10
XR-A660, XR-A550, XR-A330
2.5 $M MECHANISM CD
8
7
14
13
12 26
15
21 25
22
24
23
11
5
2
1
10
16
18
29
29 6
17
19
9
3
27
28
29
29
29
Refer to "2.6 SERVO MECHANISM ASSY".
29
29
29
29
30

11
XR-A660, XR-A550, XR-A330
•$M MECHANISM CD PARTS LIST
Mark No. Description Part No.
1 MOTOR Assy AWZ8428
NSP 2 SW Assy AWZ8429
3 CD Assy (XR-A660, XR-A550) XWZ3141
3 CD Assy (XR-A330) XWZ3050
4 • • • • •
5 Servo Spring ABH7126
6 Belt AEB7072
7 Clamp Magnet AMF7001
8 Yoke ANB7067
9 Mecha Base ANW7125
10 Loading Tray ANW7088
11 Servo Base ANW7089
12 Rotary Tray ANW7113
13 Clamper ANW7091
14 Clamper Holder ANW7092
15 Main Cam ANW7093
16 Gear Pully ANW7094
17 Lock Lever ANW7095
18 Planet Gear ANW7096
19 Actuater ANW7097
20 • • • • •
21 15P F.F.C/30V ADD7038
22 Connector Assy (6P) ADE7010
23 Float Rubber A AEB7063
24 Float Rubber B AEB7066
25 Servo Mechanism Assy AXA7039
26 Screw IPZ30P080FMC
27 Carriage Motor VXM1033
28 Motor Pulley PNW1634
29 Ha Narl GEM1016
30 Cushion Rubber XEB3003
1 Servo Mechanism AXA7039
2 SPINDLE MOTOR Assy AEA7009
3 SLEAD MOTOR Assy AEA7010
4 Gear A AEA7013
5 Gear B AEA7014
6 Screw AEA7015
7 Screw AEA7016
8 Screw AEA7017
9 Screw AEA7018
10 Leaf Switch AEA7011
Mark No. Description Part No.
•SERVO MECHANISM ASSY PARTS LIST
2.6 SERVO MECHANISM ASSY

12
XR-A660, XR-A550, XR-A330
1
10
13
12
Mech. Ι
Mech. ΙΙ
Mech. ΙΙ
Mech. Ι
Mech. ΙΙ
Only
Mech. Ι
Only
Mech. ΙΙ
Only
1
9
4
2
7
2.7 MECHANISM UNIT (XR-A660)

13
XR-A660, XR-A550, XR-A330
5
11
8
6
Mark No. Description Part No.
•MECHANISM UNIT PARTS LIST
1 Plate HD BLK (Mech. ΙΙ) F513-811
1 Plate HD BLK (Mech. Ι) F513-819
2 Motor Main BLK (Mech. ΙΙ only) F525-324
3 • • • • •
4 PCB Control BLK F567-621
5 Clutch Assy BLK F522-037
6 Main Belt FF17G-31
7 Joint Belt 113 (Mech. ΙΙ only) FF19D-21
8 Clutch Assy BLK F522-045
9 Roller Pinch BLK R F514-129
10 Roller Pinch BLK L F514-130
11 F/R Belt FF18W-12
12 Plate Base BLK F512-127
13 Plate Base BLK F512-128

14
XR-A660, XR-A550, XR-A330
1
10
13
12
Mech. ΙΙ
Mech. ΙΙ Only
Mech. ΙΙ
Mech. Ι
Mech. Ι
Mech. ΙΙ
Only
Mech. Ι
Only
Mech. ΙΙ
Only
1
9
42
6
Mech. ΙΙ
Only
2.8 MECHANISM UNIT (XR-A550 and XR-A330)

15
XR-A660, XR-A550, XR-A330
5
11
8
6
Mark No. Description Part No.
•MECHANISM UNIT PARTS LIST
1 Plate HD BLK (Mech. ΙΙ) F513-811
1 Plate HD BLK (Mech. Ι) F513-825
2 Motor Main BLK (Mech. ΙΙ only) F525-324
3 • • • • •
4 PCB Control BLK F567-622
5 Clutch Assy BLK F522-037
6 Main Belt FF17G-31
7 • • • • •
8 Clutch Assy BLK (Mech. ΙΙ) F522-045
8 Clutch Assy BLK (Mech. Ι) F522-038
9 Roller Pinch BLK R (Mech. ΙΙ) F514-129
9 Roller Pinch BLK R (Mech. Ι) F514-131
10 Roller Pinch BLK L (Mech. ΙΙ only) F514-130
11 F/R Belt FF18W-12
12 Plate Base BLK (Mech. ΙΙ only) F512-127
13 Plate Base BLK (Mech. ΙΙ only) F512-128

XR-A660, XR-A550, XR-A330
16
A
B
C
D
1234
1234
3. SCHEMATIC DIAGRAM
3.1 OVERALL WIRING DIAGRAM
1/3, 3/3
AF ASSY
(XR-A660 : XWZ3097)
(XR-A550 : XWZ3077)
(XR-A330 : XWZ3063)
E
CD SW LED
ASSY
(XWZ3086)
XR-A660 ONLY
CN6201
J
FM/AM TUNER
MODULE
(MYXK, NVXK
: AXQ7077)
(MYXJ, NVXJ
: AXQ7068)
A
CD ASSY
(XR-A660, XR-A550
: XWZ3141)
(XR-A330 : XWZ3050)
SERVO MECHANISM ASSY
(AXA7039)
B
MOTOR
ASSY
(AWZ8428)
CARRIAGE
SW ASSY
(AWZ8429)
CD
E
2/3,
E E
XR-A660, XR-A550 ONLY

XR-A660, XR-A550, XR-A330
17
A
B
C
D
5678
5678
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)
I
SECONDARY
ASSY
(XR-A660, XR-A550
: XWZ3098)
(XR-A330 : XWZ3064)
F
PRIMARY ASSY
(XWZ3066)
G
SUB TRANS ASSY
(XWZ3067)
H
AEK7071
XR-A660 ONLY
XR-A660 ONLY
XR-A660 ONLY

XR-A660, XR-A550, XR-A330
18
A
B
C
D
1234
1234
3.2 FM/AM TUNER MODULE
RF AMP
MIX AMP
BUFFER
IF AMP
PLL
FM +B SW
AM RF TUNING BLOCK
OSC
A
FM/AM TUNER MODULE
(MYXK AND NVXK TYPE : AXQ7077)
(MYXJ AND NVXJ TYPE : AXQ7068)
A

XR-A660, XR-A550, XR-A330
19
A
B
C
D
5678
5678
AF AMP
REGULATOR
AF AMP
2/3E
CN3051
A

XR-A660, XR-A550, XR-A330
20
A
B
C
D
1234
1234
3.3 CD, MOTOR and SW ASSEMBLIES
BCD ASSY
SERVO MECHANISM ASSY AXA7039
CMOTOR ASSY
(AWZ8428)
J8502
D20PWW0405E
56k
R8123
CARRIAGE MOTOR
(XR-A660, XR-A550
: XWZ3141)
(XR-A330 : XWZ3050)
B C