Pioneer XR-A390 User manual

ORDER NO.
PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS (USA) 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 2004
RRV2879
T – ZZK JAN. 2004 Printed in Japan
STEREO CD CASSETTE DECK RECEIVER
XR-A390
Model No. Order No. Remarks
XR-A4800/MYXJ RRV2328
¶This service manual should be used together with the following manual(s):
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model Type Power Requirement The voltage can be converted
by the following method.
XR-A390 DFXJ AC110-127V/220-230V/240V With the voltage selector
CONTENTS
1. SAFETY INFORMATION ...................................... 2
2. CONTRAST OF MISCELLANEOUS PARTS ........ 3
3. SCHEMATIC DIAGRAM ..................................... 13
4. PCB CONNECTION DIAGRAM .......................... 19
5. ADJUSTMENT .................................................... 20
¶For SPECIFICATIONS and PANEL FACILITIES, refer to the operating instructions.

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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.
1. SAFETY INFORMATION
LABEL CHECK
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, the interlock will no longer function if the switch (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 cover is opened, close viewing of the objective
lens with the naked eye will cause exposure to a Class
1 laser beam.
∗ : Refer to page 61 on the service manual RRV2328.
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: 5 mW
WAVELENGTH: 780 - 785 nm

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2. CONTRAST OF MISCELLANEOUS PARTS
jpfy
For the applying amount of lubricants or glue, follow the instructions in this manual.
(In the case of no amount instructions, apply as you think it appropriate.)
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 product are used for disassembly.
Reference Nos. indicate the pages and Nos. in the service manual for the base model.
NOTES:
•When ordering resistors, first convert resistance values into code form as shown in the following examples.
Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%,
and K=10%).
560 Ω→56 × 101→561 ........................................................ RD1/4PU 56
1
J
47k Ω→47 × 103→473 ........................................................ RD1/4PU 47
3
J
0.5 Ω→R50 ..................................................................................... RN2H R5
0
K
1 Ω→1R0 ..................................................................................... RS1P 1R
0
K
Ex.2 When there are 3 effective digits (such as in high precision metal film resistors).
5.62k Ω→ 562 × 101→5621 ...................................................... RN1/4PC
5 6
2
1
F
XR-A390/DFXJ and XR-A4800/MYXJ are constructed the same except for the following :
CONTRAST TABLE
Part No.
Ref. No. Mark Symbol and Description XR-A4800 XR-A390 Remarks
/MYXJ /DFXJ
PCB ASSEMBLIES
MAIN ASSY XWM3152 XWM3151
P5- 1 AF ASSY XWZ3297 XWZ3288
COMPLEX ASSY XWM3158 AWM7606
P5- 3 PRIMARY ASSY XWZ3299 XWZ3291
P7- 1 DISPLAY ASSY XWZ3298 AWU7791
P5- 4 FM/AM TUNER Module AXQ7068 AXQ7065
PACKING SECTION
P3- 1 Power Cord ADG1154 ADG1158
P3- 2 FM Antenna ADH7005 ADH7004
P3- 6 NSP Dry Cell Battery (R6P, AA) VEM-013 Not used
P3- 8 Front Pad XHA3018 XHA3028
P3- 9 Rear Pad XHA3019 XHA3029
P3-10 Packing Case XHD3142 AHD8277
P3-11 NSP Warranty Card ARY7022 Not used
P3-13 Operating Instructions (English/French) XRE3030 Not used
P3-14 Operating Instructions (Italian/Dutch/German) XRC3020 Not used
P3-15 Operating Instructions (Portuguese/Swedish/Spanish) XRC3021 Not used
Operating Instructions (English/Chinese/Spanish) Not used ARE7343
Caution Sheet XRH3004 Not used
EXTERIOR SECTION
P5- 6 Ceramic Capacitor (C1) CKPUYB102K50 Not used
P5-15 Rear Panel XNC3053 ANC8288
P5-17 Earth Plate XNG3015 Not used
P5-26 Tray Cap XAK3156 XAK3236
Tray Panel CD Not used XAK3269 For Tray Cap
P5-30 Caution Label HE PRW1233 Not used
P5-31 Caution Label VRW1094 DRW2168
P5-36 NSP Getter XAX3163 XAX3263
P5-44 Barrier XEC3013 XEC3027
Rear Sheet AED7037 Not used
Fuse (FU2, FU3 : T2A) Not used AEK1057 *1

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Notes : For PCB ASSEMBLIES, Refer to “CONTRAST OF PCB ASSEMBLIES”, “3. SCHEMATIC DIAGRAM” and “4. PCB CONNEC-
TION DIAGRAM”.
The numbers in the remarks column correspond to the numbers on the “ FRONT PANEL ASSY ”.
*1 Refer to “3. SCHEMATIC DIAGRAM”.
*2 Refer to “EXPLODED VIEWS”.
Part No.
Ref. No. Mark Symbol and Description XR-A4800 XR-A390 Remarks
/MYXJ /DFXJ
FRONT PANEL SECTION
P7- 3 Deck Mechanism Unit XYM3012 XYM3011 *2
P7- 5 Flexible Cable 15P XDD3050 Not used
P7- 5 Flexible Cable 13P Not used XDD3040
P7-18 Volume Knob XAA3013 XAA3022
P7-21 FUNC Button L XAD3076 XAD3116 No.8
FUNC Cap L Not used XAK3247 No.7
P7-22 FUNC Button R XAD3077 XAD3117 No.10
FUNC Cap R Not used XAK3248 No.9
P7-23 FUNC Frame L XAD3052 Not used
P7-24 FUNC Frame R XAD3053 Not used
P7-25 CD ENT Button XAD3055 XAD3109 No.12
P7-26 Display Panel XAK3125 XAK3262
P7-27 EQ Panel XAK3149 Not used
SC Panel Not used XAK3245 No.26
SC Panel Assy Not used XXG3089 No.13
P7-28 JOG Lens XAK3152 XAK3243 No.23
P7-29 V Lens XAK3153 XAK3237
P7-33 FL Cover XAK3163 XAK3239
P7-34 Cover Sheet L XAK3184 Not used
P7-35 Cover Sheet R XAK3185 Not used
LED Barrier Not used XEC3022 No.24
P7-36 Power Button XAD3043 XAD3102 No.17
P7-37 CD Button XAD3045 XAD3104 No.19
P7-38 SC Button XAD3046 Not used
SC Button L Not used XAD3105 No.29
SC Cap L Not used XAK3241 No.27
SC Button R Not used XAD3106 No.30
SC Cap R Not used XAK3267 No.28
ASES Button Not used XAD3114 No.20
Timer Button Not used XAD3115 No.21
P7-39 SC Button L XAD3047 Not used
Audio Button Not used XAD3107 No.14
P7-40 SC Button R XAD3048 Not used
Visual Button Not used XAD3108 No.15
P7-41 DOLBY Button XAD3054 XAD3113 No.11
P7-42 Sub Panel XAK3196 XAK3255 No.6
P7-43 Standby Lens XAK3151 XAK3240 No.18
P7-44 Deck Lens L XAK3159 XAK3249 No.3
P7-45 Deck Lens R XAK3160 XAK3250 No.5
P7-46 JOG Conductor XAK3165 XAK3244 No.22
P7-47 Deck Door_L XAN3021 XAN3041 No.2
P7-48 Deck Door_R XAN3025 XAN3042 No.4
P7-49 Front Panel XMB3026 XMB3056 No.1
O/C Button Not used XAD3103 No.16
P7-52 Spacer XEB3012 Not used
P7-53 Spacer XEB3013 Not used
P7-56 Connector Assy 3P XDE3037 XDE3036
Cushion Spacer XEB3015 Not used
Cushion Spacer XEB3016 Not used
Cushion Spacer XEB3017 Not used
Spacer XEC3014 Not used
Spacer XEC3019 Not used

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2
EXPLODED VIEWS
÷FRONT PANEL ASSY PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 Front Panel XMB3056
2 Deck Door_L XAN3041
3 Deck Lens L XAK3249
4 Deck Door_R XAN3042
5 Deck Lens R XAK3250
6 Sub Panel XAK3255
7 FUNC Cap L XAK3247
8 FUNC Button L XAD3116
9 FUNC Cap R XAK3248
10 FUNC Button R XAD3117
11 DOLBY Button XAD3113
12 CD ENT Button XAD3109
13 SC Panel Assy XXG3089
14 Audio Button XAD3107
15 Visual Button XAD3108
16 O/C Button XAD3103
17 Power Button XAD3102
18 Standby Lens XAK3240
19 CD Button XAD3104
20 ASES Button XAD3114
21 Timer Button XAD3115
22 JOG Conductor XAK3244
23 JOG Lens XAK3243
24 LED Barrier XEC3022
25 Screw BPZ30P080FMC
26 SC Panel XAK3245
27 SC Cap L XAK3241
28 SC Cap R XAK3267
29 SC Button L XAD3105
30 SC Button R XAD3106
÷FRONT PANEL ASSY
27, 29 26 28, 30
13

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Note : When part #17 or #60 or #104 is
replaced, part #16 also need to
be replaced at the same time.
16
104
80
101
81
19
100
61
20
60
17
15
18 81
19
46
1
13
102
103
45
88
83
84 5
4
63
3
62
42
41
23
67
22
• DECK MECHANISM UNIT (1/2)
÷DECK MECHANISM UNIT SECTION (XYM3011)

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82
30
29
50
28
85
106
52
87
36
43
107
35
39
80
86
34
70
33
80
105 51
25
68
69
27
66
14
64
11
12
14
65
6
37

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Note : When part #17 or #60 or #104 is
replaced, part #16 also need to
be replaced at the same time.
60
104
16
15
81
19
20
18
67
17
80
61
9
7
66
62
19
81 71
90
89
12
14
81
11
10
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102
23
•DECK MECHANISM UNIT (2/2)

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31
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43
36
33
32
25
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69
27

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Mark No. Description Part No.Mark No. Description Part No.
•DECK MECHANISM UNIT PARTS LIST
1 Assy’y HD Holder 50-093-4373
3 Frame HD 50-219-3024
4 Plate AZ 50-119-4046
5 Spring AZ 50-160-4108
6 Lever HD 50-259-3342
7 R/P Head TC881CB067B
9 Guide Tape 50-219-4038
10 Plate HD 50-093-3036
11 Chassis HD 50-112-3045
12 Cap Pinch R 50-219-4033
13 Cap Pinch L 50-219-4034
14 Roller Pinch 50-027-41054
15 Ass’y Plate D 50-219-4311
16 Cap Reel 50-228-4020
17 Gear Reel 50-222-4006
18 Lever ST 50-259-4041
19 Guide C 50-219-4014
20 Lever Brake 50-259-3251
22 Arm SW 50-239-4027
23 Arm CS 50-239-4026
25 Ass’y Cover 50-093-4063
27 Arm Trigger 50-268-3016
28 Arm Cam 50-139-4292
29 Gear Cam 50-221-3009
30 Coller 03-300-4455
31 Ass’y Flywheel RA 50-093-3360
32 Ass’y Clutch 50-093-4069
33 Arm UD A 50-239-4017
34 Gear UD 50-222-4007
35 Pulley D 50-223-4254
36 Plunger 03-300-4442
37 Ass’y Bobbin 50-093-4125
39 Ass’y Motor 50-093-4316
41 Belt BR 02-084-4205
42 Belt AF 02-084-4202
43 Belt FR 02-083-4188
45 PCB HD 50-070-4057
46 Housing S5BPHKS
50 Ass’y PCB 50-093-4057
51 Ass’y Flywheel L 50-093-3315
52 Ass’y Flywheel RB 50-093-3361
60 Spring 01-081-4601
61 Spring 01-082-4652
62 Spring 01-082-4651
63 Spring 01-082-4650
64 Spring 01-080-4649
65 Spring 01-080-4607
66 Spring 01-080-4635
67 Spring 01-082-4654
68 Spring 01-082-4598
69 Spring 01-082-4597
70 Spring 01-081-4657
71 Spring 01-081-4605
80 Screw GSE10A2003
81 Screw GSE20A2005
82 Screw GSE10A2004
83 Screw GSD10A2018
84 Screw 03-300-4056
85 Screw GSL10A1704
86 Screw GSP10A2603
87 Screw GSP11A2012
88 Screw GSE20A2004
89 Screw GSL20A2005
90 Screw 03-300-4127
100 Washer GWN21X040040
101 Washer GWM19X055035S
102 Washer GWM19S035035
103 Washer GWM17S050035S
104 Washer GWM48X075010
105 Washer GWP23X040020
106 Washer GWP21X045020
107 Washer GWP12X030040S