Pioneer XR-A6800 User manual

ORDER NO.
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
c
XR-A6800
RRV2328
T – IZK JULY 2000 Printed in Japan
XR-A4800
Type Model Power Requirement Remarks
XR-A6800 XR-A4800
MYXJ AC220-230V
NVXJ – AC230V
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
STEREO CD CASSETTE DECK RECEIVER
1. SAFETY INFORMATION ....................................... 2
2. EXPLODED VIEWS AND PARTS LIST ................. 3
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ... 16
4. PCB CONNECTION DIAGRAM ........................... 32
5. PCB PARTS LIST ................................................ 46
6. ADJUSTMENT..................................................... 53
CONTENTS 7. GENERAL INFORMATION ................................ 62
7.1 DIAGNOSIS .................................................. 62
7.1.1 DISASSEMBLY .................................... 62
7.2 PARTS .......................................................... 65
7.2.1 IC .......................................................... 65
7.2.2 DISPLAY............................................... 67
8. PANEL FACILITIES AND SPECIFICATIONS .... 69
full logic aut reverse
stereo double cassette deck
auto synchro egiting system
W2-2001
REPEAT
SURROUNDMODE
DISPLAY/RDS
PHONES
• XR-A6800

2
XR-A6800, XR-A4800
MYXJ Type
MYXJ Type
NVXJ Type
Printed on the Rear Panel
Additional Laser Caution
1.Laser Interlock Mechanism
The position of the switch (S9501) for detecting loading
state is detected by the system microprocessor, and
the design prevents laser diode oscillation when the
switch (S9501) is pressed physically.
Thus,theinterlockwillnolongerfunctioniftheswitch(S9501)
is released physically and deliberatery.
The interlock also does not function in the test mode ∗ .
Laser diode oscillation will continue, if pin 1 of
CXA1821M (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.When the coverisopened, close viewingof the objective
lens with the naked eye will cause exposure to a Class
1 laser beam.
∗ : Refer to page 61.
LABEL CHECK (For MYXJ and NVXJ Types)
LASER DIODE CHARACTERISTICS
MAXIMUM OUTPUT POWER: 5 mW
WAVELENGTH: 780 nm to 785 nm
WARNING !
THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1
BUT THE LASER COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR
CLASS 1.
A SPECIALLY INSTRUCTED PERSON SHOULD DO SERVICING OPERATION OF THE APPARATUS.
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.

3
XR-A6800, XR-A4800
2.1 PACKING
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.
Therefore, when replacing, be sure to use parts of identical designation.
•Screws adjacent to mark on the product are used for disassembly.
1 Power Cord See Contrast table (2)
2 FM Antenna ADH7005
3 AM Loop Antenna XTB3001
4 Remote Control Unit XZN3106
5 Battery Cover XZN3103
NSP 6 Dry Cell Battery (R6P, AA) VEM-013
7 Packing Sheet AHG7049
8 Front Pad XHA3018
9 Rear Pad XHA3019
10 Packing Case See Contrast table (2)
NSP 11 Warranty Card ARY7022
12 Polyethylene Bag Z21-038
(0.03 ×230 ×340)
13 Operating Instructions XRE3030
(English/French)
14 Operating Instructions See Contrast table (2)
(Italian/Dutch/German)
15 Operating Instructions See Contrast table (2)
(Portuguese/Swedish/Spanish)
NSP 16 Polyethylene Bag See Contrast table (2)
17 Fuse (T5A) See Contrast table (2)
(1) PACKING PARTS LIST
Mark No. Description Part No.
(2) CONTRAST TABLE
XR-A6800/MYXJ, XR-A4800/MYXJ and NVXJ are constructed the same except for the following :
Mark No. Symbol and Description Part No. Remarks
XR-A6800/MYXJ XR-A4800/MYXJ XR-A4800/NVXJ
NSP
1
10
14
15
16
17
Power Cord
Packing Case
Operating Instructions
(Italian/Dutch/German)
Operating Instructions
(Portuguese/Swedish/Spanish)
Polyethylene Bag
Fuse (T5A)
ADG1154
XHD3143
XRC3020
XRC3021
Not used
Not used
ADG1154
XHD3142
XRC3020
XRC3021
Not used
Not used
ADG1156
XHD3142
Not used
Not used
AHG7033
AEK7001
VOL
KARAOKESFC
DISC DISC DISC
CLEAR
STATION
REMOTECONTROLUNIT CU-XR025
MONO BAND
PGM
REPEATRANDOM
AUX
P.BASSDISPLAY
SLEEP
POWER
2
3
12
17
8(1/2)
7
9(1/2)
16
1
1
13
11
14
XR-A6800/MYXJ and
XR-A4800/MYXJ
Only
XR-A4800/NVXJ
Only
15
4
9(2/2)
10
8(2/2)
5
6
XR-A6800/MYXJ
and
XR-A4800/MYXJ
Only

4
XR-A6800, XR-A4800
2.2 EXTERIOR SECTION
B
C
D
G
A
F
C
D
B
E
A
F
E
G
28
46
46
46
46
45
45
45
43
45
43
45
46
45
45
32 (1/3)
9
5
Refer to
"2.4 $M MECHANISM CD-2".
Refer to
"2.3 FRONT PANEL SECTION".
27
26
36
32 (2/3)
32 (3/3)
21
24
21
Note :
Hook Tray cap on top of loading
tray and then insert the bottom
three hooks.
Note :
Hook Tray cap on top of loading
tray and then insert the bottom
three hooks.
24
14
16
13
22
XR-A6800
Only
XR-A6800
Only
XR-A6800/MYXJ,
XR-A4800/MYXJ
Only
XR-A6800
Only
XR-A6800
Only
XR-A6800
Only
17
31
30
15
6
4
3
8
38
19
18
23
1
37
7
2
25
39
39
41
39
42
41
39
40
40
44
39 39
39
29
33 34
35
43
F
H
G
A

5
XR-A6800, XR-A4800
1 AF Assy See Contrast table (2)
2 SECONDARY Assy See Contrast table (2)
3 PRIMARY Assy See Contrast table (2)
4 FM/AM TUNER Module AXQ7068
NSP 5 $M MECHANISM CD-2 See Contrast table (2)
6 Ceramic Capacitor (C1) CKPUYB102K50
7 Power Transformer (T1) See Contrast table (2)
8 Fuse (FU2) See Contrast table (2)
9 Flexible Cable (08P) XDD3048
10 • • • • •
11 • • • • •
12 • • • • •
13 PCB Bracket ANG7263
NSP 14 Chassis XNA3005
15 Rear Panel See Contrast table (2)
16 PCB Bracket XNG3006
17 Earth Plate XNG3015
18 Heat Sink See Contrast table (2)
19 Sub Heat Sink B XNH3012
20 • • • • •
21 Cushion Leg A XEB3008
22 Wire Clip A XEC3003
23 Card Spacer XEC3008
24 Leg XMR3012
25 SEC Holder A See Contrast table (2)
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
26 Tray Cap Assy XAK3156
27 Pioneer Badge XAM3001
28 Bonnet Case XZN3098
NSP 29 Fuse Card See Contrast table (2)
30 Caution Label HE See Contrast table (2)
31 Caution Label See Contrast table (2)
32 Disc Label XAX3127
33 ICP Label See Contrast table (2)
34 ICP Label See Contrast table (2)
35 ICP Label See Contrast table (2)
NSP 36 Getter See Contrast table (2)
NSP 37 DO NOT THROW Assy • • • • •
NSP 38 CABLE HOLDER Assy • • • • •
39 Screw BBZ30P080FMC
40 Screw BBZ30P180FMC
41 Screw ASZ40P060FMC
42 Screw BPZ30P080FMC
43 Screw VBZ30P080FZK
44 Barier XEC3013
45 Screw BPZ30P100FZK
46 Screw VBT30P080FZK
(2) CONTRAST TABLE
XR-A6800/MYXJ, XR-A4800/MYXJ and NVXJ are constructed the same except for the following :
Mark No. Symbol and Description Part No. Remarks
XR-A6800/MYXJ XR-A4800/MYXJ XR-A4800/NVXJ
NSP
NSP
NSP
1
2
3
5
7
8
15
18
25
29
30
31
33
34
35
36
AF Assy
SECONDARY Assy
PRIMARY Assy
$M MECHANISM CD-2
Power Transformer (T1)
Fuse (FU2)
Rear Panel
Heat Sink
SEC Holder A
Fuse Card
Caution Label HE
Caution Label
ICP Label
ICP Label
ICP Label
Getter
XWZ3310
XWZ3304
XWZ3312
XXA3012
XTS3037
AEK1061 (T5A)
XNC3058
XNH3010
XMR3014
AAX7098
PRW1233
VRW1094
XAX3121
XAX3153
XAX3158
XAX3169
XWZ3297
XWZ3289
XWZ3299
XXA3009
XTS3036
AEK1060 (T4A)
XNC3053
XNH3009
XMR3015
Not used
PRW1233
VRW1094
Not used
Not used
Not used
XAX3163
XWZ3297
XWZ3289
XWZ3299
XXA3009
XTS3036
AEK1060 (T4A)
XNC3053
XNH3009
XMR3015
Not used
PRW1018
Not used
Not used
Not used
Not used
XAX3163

6
XR-A6800, XR-A4800
2.3 FRONT PANEL SECTION
C
D
C
B
A
B
A
D
26
33
32
49
36 43 37
2930
2
16
46
40
38
11
9
39
27
28
25
18
41
34
53
35
19
15
20 42
44
45 48
47
13
12
11
17 10 22
21
24
23
7
51
5
3
Refer to
"2.6 DECK MECHANISM UNIT".
14
56
57
8
54
54
55 55
55
55
55
55
55
55
55
52 1
4
6
I
J

7
XR-A6800, XR-A4800
(1) FRONT PANEL SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 DISPLAY Assy See Contrast table (2)
2 BLUE LED Assy XWZ3292
3 Deck Mechanism Unit XYM3012
4 Flexible Cable 27P XDD3041
5 Flexible Cable 15P XDD3050
6 Flexible Cable 19P XDD3051
7 GND Plate B XNG3031
8 GND Plate C See Contrast table (2)
9 Ratch Spring_L ABH7130
10 Ratch Spring_R ABH7131
11 Damper Assy XXA3025
12 Door Spring_L XBH3010
13 Door Spring_R XBH3011
14 Cushion Leg A XEB3008
15 Cushion Spring XEB3010
16 Ratch Mold_L XMR3001
17 Ratch Mold_R XMR3002
18 Volume Knob XAA3013
19 JOG Knob XAA3015
20 MIC Knob XAB3007
21 FUNC Button L See Contrast table (2)
22 FUNC Button R See Contrast table (2)
23 FUNC Frame L XAD3052
24 FUNC Frame R XAD3053
25 CD ENT Button XAD3055
26 Display Panel See Contrast table (2)
27 EQ Panel See Contrast table (2)
28 JOG Lens XAK3152
29 V Lens XAK3153
30 LT Conductor XAK3155
31 • • • • •
32 FL Filter XAK3162
33 FL Cover XAK3163
34 Cover Sheet L XAK3184
35 Cover Sheet R XAK3185
36 Power Button See Contrast table (2)
37 CD Button XAD3045
38 SC Button XAD3046
39 SC Button L XAD3047
40 SC Button R XAD3048
41 DOLBY Button XAD3054
42 Sub Panel See Contrast table (2)
43 ST Lens XAK3151
44 Deck Lens L XAK3159
45 Deck Lens R XAK3160
46 JOG Conductor XAK3165
47 Deck Door_L See Contrast table (2)
48 Deck Door_R See Contrast table (2)
49 Front Panel XMB3026
50 • • • • •
51 GND Plate A See Contrast table (2)
52 Spacer XEB3012
53 Spacer XEB3013
54 Spacer XEB3011
55 Screw BPZ30P080FMC
56 Connector Assy 3P XDE3037
57 Connector Assy 5P XDE3038
(2) CONTRAST TABLE
XR-A6800/MYXJ, XR-A4800/MYXJ and NVXJ are constructed the same except for the following :
Mark No. Symbol and Description Part No.
Remarks
XR-A6800/MYXJ XR-A4800/MYXJ XR-A4800/NVXJ
1
8
21
22
26
27
36
42
47
48
51
DISPLAY Assy
GND Plate C
FUNC Button L
FUNC Button R
Display Panel
EQ Panel
Power Button
Sub Panel
Deck Door_L
Deck Door_R
GND Plate A
XWZ3311
XNG3047
XAD3050
XAD3051
XAK3130
XAK3150
XAD3044
XAK3142
XAN3022
XAN3026
Not used
XWZ3298
Not used
XAD3076
XAD3077
XAK3125
XAK3149
XAD3043
XAK3137
XAN3021
XAN3025
XNG3030
XWZ3298
Not used
XAD3076
XAD3077
XAK3125
XAK3149
XAD3043
XAK3137
XAN3021
XAN3025
XNG3030

8
XR-A6800, XR-A4800
2.4 $M MECHANISM CD-2
B
B
A
A
D
C
C
D
8
7
14
13
21 25
22
24
23
Refer to
"2.5 SERVO MECHANISM ASSY".
11
5
2
1
19
27 28
4
3
20
31
9
29
29
29
30
32
29
29
29
10
29
17
6
12
16
29
15
18
29
26
C
D
E
B

9
XR-A6800, XR-A4800
9
5
1
14
6
7
8
2
3
4
No supplied part
(1) $M MECHANISM CD-2 PARTS LIST
Mark No. Description Part No.
1 MOTOR Assy XWZ3230
2 SW Assy XWZ3231
3 CD Assy See Contrast table (2)
4 TRADE Assy XWZ3232
5 Servo Spring ABH7126
6 Belt AEB7072
7 Clamp Magnet AMF7001
8 Yoke ANB7216
9 Mecha Base XNW3011
10 Loading Tray XNW3002
11 Traverse Base XNW3006
12 Rotary Tray ANW7124
13 Clamper XNW3007
14 Clamper Holder XNW3004
15 Main Cam ANW7093
Mark No. Description Part No.
•SERVO MECHANISM ASSY PARTS LIST
2.5 SERVO MECHANISM ASSY
Mark No. Description Part No.
16 Gear Pulley ANW7094
17 Lock Lever ANW7095
18 Planet Gear ANW7096
19 Actuator ANW7097
20 Mini Card Spacer AEC7143
21 16P 200 Flexible Cable/60V XDD3036
22 Connector Assy (6P) ADE7010
23 Float Rubber A AEB7063
24 Float Rubber B AEB7066
25 Servo Mechanism Assy XXA3010
26 Screw IPZ30P080FMC
27 Carriage Motor VXM1033
28 Motor Pulley PNW1634
29 Ha Narl GEM1016
30 Cushion Rubber XEB3005
31 11P 185 Flexible Cable/30V XDD3037
32 Cushion Rubber XEB3007
(2) CONTRAST TABLE
$M MECHANISM CD-2 (XXA3012) and (XXA3009) are constructed the same except for the following :
Mark No. Symbol and Description Part No. Remarks
XXA3012 (XR-A6800) XXA3009 (XR-A4800)
3 CD Assy XWZ3233 XWZ3229
NSP 1 Motor Chassis Assy • • • • •
2 Motor Gear Assy X-2625-769-(1)
3 Sled Shaft 2-626-908-(01)
4 Gear (A)(S) 2-625-188-(02)
NSP 5 Screw +P2*3 • • • • •
6 Leaf Switch 1-572-085-(11)
7 Motor(6p)(S)PCB 1-639-678-(12)
8 Connector Pin 6p 1-564-722-(11)
9 Gear(B)(RP) 2-627-003-(01)
10 • • • • •
11 • • • • •
12 • • • • •
13 • • • • •
14 KSS-213C(Pick-up) 8-848-483-(05)

10
XR-A6800, XR-A4800
16
104
80
101
81 19
100 61
20
60 17
15 18 81
19
18
113
102
103
45
88
83
84 54
63 3
62
42
41
23
67
22
• DECK MECHANISM UNIT (1/2)
2.6 DECK MECHANISM UNIT