Pioneer XR-A790 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 2001
RRV2502
T – ZZK JULY 2001 Printed in Japan
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model No. Order No. Remarks
XR-A6800/MYXJ RRV2328
XR-A4800/MYXJ
¶This service manual should be used together with the following manual(s):
STEREO CD CASSETTE DECK RECEIVER
XR-A790
XR-A390
Type Model Power Requiremen The voltage can be converted
XR-A790 XR-A390 by the following method.
DBDXJ ‡‡
AC110-127V/220-230V/240V With the voltage selector
DDXJ/AR ‡‡
AC110-127V/220-230V/240V With the voltage selector
YPWXJ ‡‡
AC240V –––––––
CONTENTS
1. SAFETY INFORMATION ......................................2
2. CONTRAST OF MISCELLANEOUS PARTS........3
3. SCHEMATIC DIAGRAM .....................................17
4. PCB CONNECTION DIAGRAM..........................23
5. ADJUSTMENT....................................................24

XR-A790, XR-A390
2
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,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 thecoveris opened, closeviewing ofthe 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
Printed on the Rear Panel
(Except XR-A390/DBDXJ) DBDXJ and YPWXJ TYPES
DDXJ/AR TYPE

XR-A790, XR-A390
3
2. CONTRAST OF MISCELLANEOUS PARTS
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%).
Ex.2 When there are 3 effective digits (such as in high precision metal film resistors).
561
473
R50
1R0
5621
560
47k
0.5
1
RD1/4PU J
RD1/4PU J
RN2H K
RS1P K
56 x 10
1
47 x10
3
R50
1R0
561
473
5.62k RN1/4PC F562 x 10
1
5621
CONTRASTTABLE for XR-A790
Part No.
Ref. No. Mark Symbol and Description XR-A6800 XR-A790 XR-A790 XR-A790 Remarks
/MYXJ /DBDXJ /DDXJ/AR /YPWXJ
PCB ASSEMBLIES
MAIN ASSY XWM3163 XWM3161 XWM3161 XWM3161
P5- 1 AF ASSY XWZ3310 XWZ3303 XWZ3303 XWZ3303
COMPLEX ASSY XWM3168 AWM7613 AWM7613 AWM7614
P5- 3 PRIMARY ASSY XWZ3312 XWZ3291 XWZ3291 XWZ3294
P7- 1 DISPLAY ASSY XWZ3311 AWU7797 AWU7797 AWU7797
P5- 4 FM/AM TUNER Module AXQ7068 AXQ7065 AXQ7065 AXQ7065
PACKING SECTION
P3- 1 Power Cord ADG1154 ADG1158 ADG1158 ADG1160
P3- 2 FM Antenna ADH7005 ADH7004 ADH7004 ADH7004
P3- 6 NSP Dry Cell Battery (R6P, AA) VEM-013 Not used Not used VEM-013
P3- 8 Front Pad XHA3018 XHA3028 XHA3028 XHA3028
P3- 9 Rear Pad XHA3019 XHA3029 XHA3029 XHA3029
P3-10 Packing Case XHD3143 XHD3272 XHD3292 XHD3273
P3-11 NSP Warranty Card ARY7022 Not used Not used ARY7047
P3-13 Operating Instructions (English/French) XRE3030 Not used Not used XRE3046
P3-14 Operating Instructions XRC3020 Not used Not used Not used
(Italian/Dutch/German)
P3-15 Operating Instructions XRC3021 Not used Not used Not used
(Portuguese/Swedish/Spanish)
P3-16 NSP Polyethylene Bag Not used Not used Not used AHG7033
Operating Instructions Not used XRE3048 XRE3048 Not used
(English/Chinese/Spanish)
Power Cord Not used Not used XDG3009 Not used
Power-cord Plug Conversion Adapter Not used XKM3002 XKM3002 Not used Accessories
Caution Sheet AR XRH3004 Not used XRH3002 Not used
EXTERIOR SECTION
P5- 6 Ceramic Capacitor (C1) CKPUYB102K50 Not used Not used Not used
P5-15 Rear Panel XNC3058 XNC3125 XNC3125 XNC3126
P5-17 Earth Plate XNG3015 Not used Not used Not used
P5-26 Tray Cap XAK3156 XAK3236 XAK3236 XAK3236
Tray Panel CD Not used XAK3235 XAK3235 XAK3235 For Tray Cap
P5-30 Caution Label HE PRW1233 Not used Not used Not used
P5-31 Caution Label VRW1094 PRW1018 VRW1872 PRW1018
P5-36 NSP Getter XAX3169 XAX3267 XAX3267 XAX3266
P5-44 Barrier XEC3013 XEC3027 XEC3027 XEC3027
Rear Sheet AED7037 Not used Not used Not used
XR-A790/DBDXJ, DDXJ/AR,YPWXJ and XR-A6800/MYXJ are constructed the same except for the following :

XR-A790, XR-A390
4
Part No.
Ref. No. Mark Symbol and Description XR-A6800 XR-A790 XR-A790 XR-A790 Remarks
/MYXJ /DBDXJ /DDXJ/AR /YPWXJ
Fuse (FU2, FU3 :T3.15A) Not used AEK1059 AEK1059 Not used *1
Fuse Card (For FU2, FU3) Not used AAX7493 AAX7493 Not used *2
NSP Name Label Not used Not used XAL3095 Not used *3
FRONT PANEL SECTION
P7-18 Volume Knob XAA3013 XAA3022 XAA3022 XAA3022
P7-21 FUNC Button L XAD3050 XAD3111 XAD3111 XAD3111 No.8
FUNC Cap L Not used XAK3247 XAK3247 XAK3247 No.7
P7-22 FUNC Button R XAD3051 XAD3112 XAD3112 XAD3112 No.10
FUNC Cap R Not used XAK3248 XAK3248 XAK3248 No.9
P7-23 FUNC Frame L XAD3052 Not used Not used Not used
P7-24 FUNC Frame R XAD3053 Not used Not used Not used
P7-25 CD ENT Button XAD3055 XAD3109 XAD3109 XAD3109 No.12
P7-26 Display Panel XAK3130 XAK3265 XAK3265 XAK3265
P7-27 EQ Panel XAK3150 Not used Not used Not used
SC Panel Not used XAK3245 XAK3245 XAK3245 No.26
SC Panel Assy Not used XXG3089 XXG3089 XXG3089 No.13
P7-28 JOG Lens XAK3152 XAK3243 XAK3243 XAK3243 No.23
P7-29 V Lens XAK3153 XAK3237 XAK3237 XAK3237
P7-33 FL Cover XAK3163 XAK3239 XAK3239 XAK3239
P7-34 Cover Sheet L XAK3184 Not used Not used Not used
P7-35 Cover Sheet R XAK3185 Not used Not used Not used
LED Barrier Not used XEC3022 XEC3022 XEC3022 No.24
P7-36 Power Button XAD3044 XAD3102 XAD3102 XAD3102 No.17
P7-37 CD Button XAD3045 XAD3104 XAD3104 XAD3104 No.19
P7-38 SC Button XAD3046 Not used Not used Not used
SC Button L Not used XAD3105 XAD3105 XAD3105 No.29
SC Cap L Not used XAK3241 XAK3241 XAK3241 No.27
SC Button R Not used XAD3106 XAD3106 XAD3106 No.30
SC Cap R Not used XAK3267 XAK3267 XAK3267 No.28
ASES Button Not used XAD3114 XAD3114 XAD3114 No.20
Timer Button Not used XAD3115 XAD3115 XAD3115 No.21
P7-39 SC Button L XAD3047 Not used Not used Not used
Audio Button Not used XAD3107 XAD3107 XAD3107 No.14
P7-40 SC Button R XAD3048 Not used Not used Not used
Visual Button Not used XAD3108 XAD3108 XAD3108 No.15
P7-41 DOLBY Button XAD3054 XAD3120 XAD3120 XAD3120 No.11
P7-42 Sub Panel XAK3199 XAK3255 XAK3255 XAK3255 No.6
P7-43 Standby Lens XAK3151 XAK3240 XAK3240 XAK3240 No.18
P7-44 Deck Lens L XAK3159 XAK3249 XAK3249 XAK3249 No.3
P7-45 Deck Lens R XAK3160 XAK3250 XAK3250 XAK3250 No.5
P7-46 JOG Conductor XAK3165 XAK3244 XAK3244 XAK3244 No.22
P7-47 Deck Door_L XAN3022 XAN3037 XAN3037 XAN3037 No.2
P7-48 Deck Door_R XAN3026 XAN3038 XAN3038 XAN3038 No.4
P7-49 Front Panel XMB3026 XMB3056 XMB3056 XMB3056 No.1
O/C Button Not used XAD3103 XAD3103 XAD3103 No.16
P7-52 Spacer XEB3012 Not used Not used Not used
P7-53 Spacer XEB3013 Not used Not used Not used
Cushion Spacer XEB3015 Not used Not used Not used
Cushion Spacer XEB3016 Not used Not used Not used
Cushion Spacer XEB3017 Not used Not used Not used
Spacer XEC3014 Not used Not used Not used
Spacer XEC3019 Not used Not used Not used
Notes : For PCBASSEMBLIES, Refer to “CONTRAST OF PCBASSEMBLIES”, “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 Stick Fuse Card on the PRIMARYASSY.
*3 Stick Name Label on the Rear Panel.

XR-A790, XR-A390
5
XR-A390/DBDXJ, DDXJ/AR,YPWXJ and XR-A4800/MYXJ are constructed the same except for the following :
CONTRASTTABLE for XR-A390
Part No.
Ref. No. Mark Symbol and Description XR-A4800 XR-A390 XR-A390 XR-A390 Remarks
/MYXJ /DBDXJ /DDXJ/AR /YPWXJ
PCB ASSEMBLIES
MAIN ASSY XWM3152 XWM3151 XWM3151 XWM3151
P5- 1 AF ASSY XWZ3297 XWZ3288 XWZ3288 XWZ3288
COMPLEX ASSY XWM3158 AWM7606 AWM7606 AWM7607
P5- 3 PRIMARY ASSY XWZ3299 XWZ3291 XWZ3291 XWZ3294
P7- 1 DISPLAY ASSY XWZ3298 AWU7791 AWU7791 AWU7791
P5- 4 FM/AM TUNER Module AXQ7068 AXQ7065 AXQ7065 AXQ7065
PACKING SECTION
P3- 1 Power Cord ADG1154 ADG1158 ADG1158 ADG1160
P3- 2 FM Antenna ADH7005 ADH7004 ADH7004 ADH7004
P3- 6 NSP Dry Cell Battery (R6P, AA) VEM-013 Not used Not used Not used
P3- 8 Front Pad XHA3018 XHA3028 XHA3028 XHA3028
P3- 9 Rear Pad XHA3019 XHA3029 XHA3029 XHA3029
P3-10 Packing Case XHD3142 XHD3265 XHD3293 XHD3263
P3-11 NSP Warranty Card ARY7022 Not used Not used ARY7047
P3-13 Operating Instructions (English/French) XRE3030 Not used Not used XRE3046
P3-14 Operating Instructions XRC3020 Not used Not used Not used
(Italian/Dutch/German)
P3-15 Operating Instructions XRC3021 Not used Not used Not used
(Portuguese/Swedish/Spanish)
P3-16 NSP Polyethylene Bag Not used Not used Not used AHG7033
Operating Instructions Not used XRE3048 XRE3048 Not used
(English/Chinese/Spanish)
Power Cord Not used Not used XDG3009 Not used
Power-cord Plug Conversion Adapter Not used XKM3002 XKM3002 Not used Accessories
Caution Sheet XRH3004 Not used XRH3002 Not used
EXTERIOR SECTION
P5- 6 Ceramic Capacitor (C1) CKPUYB102K50 Not used Not used Not used
P5-15 Rear Panel XNC3053 XNC3122 XNC3130 XNC3120
P5-17 Earth Plate XNG3015 Not used Not used Not used
P5-26 Tray Cap XAK3156 XAK3236 XAK3236 XAK3236
Tray Panel CD Not used XAK3269 XAK3269 XAK3269 For Tray Cap
P5-30 Caution Label HE PRW1233 Not used Not used Not used
P5-31 Caution Label VRW1094 PRW1018 VRW1872 PRW1018
P5-36 NSP Getter XAX3163 XAX3263 XAX3263 XAX3262
P5-44 Barrier XEC3013 XEC3027 XEC3027 XEC3027
Rear Sheet AED7037 Not used Not used Not used
Fuse (FU2, FU3 :T2A) Not used AEK1057 AEK1057 Not used *1
FRONT PANEL SECTION
P7- 3 Deck Mechanism Unit XYM3012 XYM3011 XYM3011 XYM3011 *2
P7- 5 Flexible Cable 15P XDD3050 Not used Not used Not used
P7- 5 Flexible Cable 13P Not used XDD3040 XDD3040 XDD3040
P7-18 Volume Knob XAA3013 XAA3022 XAA3022 XAA3022
P7-21 FUNC Button L XAD3076 XAD3116 XAD3116 XAD3116 No.8
FUNC Cap L Not used XAK3247 XAK3247 XAK3247 No.7
P7-22 FUNC Button R XAD3077 XAD3117 XAD3117 XAD3117 No.10
FUNC Cap R Not used XAK3248 XAK3248 XAK3248 No.9
P7-23 FUNC Frame L XAD3052 Not used Not used Not used
P7-24 FUNC Frame R XAD3053 Not used Not used Not used

XR-A790, XR-A390
6
Notes : For PCBASSEMBLIES, Refer to “CONTRAST OF PCBASSEMBLIES”, “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 XR-A390 XR-A390 Remarks
/MYXJ /DBDXJ /DDXJ/AR /YPWXJ
P7-25 CD ENT Button XAD3055 XAD3109 XAD3109 XAD3109 No.12
P7-26 Display Panel XAK3125 XAK3262 XAK3262 XAK3262
P7-27 EQ Panel XAK3149 Not used Not used Not used
SC Panel Not used XAK3245 XAK3245 XAK3245 No.26
SC Panel Assy Not used XXG3089 XXG3089 XXG3089 No.13
P7-28 JOG Lens XAK3152 XAK3243 XAK3243 XAK3243 No.23
P7-29 V Lens XAK3153 XAK3237 XAK3237 XAK3237
P7-33 FL Cover XAK3163 XAK3239 XAK3239 XAK3239
P7-34 Cover Sheet L XAK3184 Not used Not used Not used
P7-35 Cover Sheet R XAK3185 Not used Not used Not used
LED Barrier Not used XEC3022 XEC3022 XEC3022 No.24
P7-36 Power Button XAD3043 XAD3102 XAD3102 XAD3102 No.17
P7-37 CD Button XAD3045 XAD3104 XAD3104 XAD3104 No.19
P7-38 SC Button XAD3046 Not used Not used Not used
SC Button L Not used XAD3105 XAD3105 XAD3105 No.29
SC Cap L Not used XAK3241 XAK3241 XAK3241 No.27
SC Button R Not used XAD3106 XAD3106 XAD3106 No.30
SC Cap R Not used XAK3267 XAK3267 XAK3267 No.28
ASES Button Not used XAD3114 XAD3114 XAD3114 No.20
Timer Button Not used XAD3115 XAD3115 XAD3115 No.21
P7-39 SC Button L XAD3047 Not used Not used Not used
Audio Button Not used XAD3107 XAD3107 XAD3107 No.14
P7-40 SC Button R XAD3048 Not used Not used Not used
Visual Button Not used XAD3108 XAD3108 XAD3108 No.15
P7-41 DOLBY Button XAD3054 XAD3113 XAD3113 XAD3113 No.11
P7-42 Sub Panel XAK3196 XAK3255 XAK3255 XAK3255 No.6
P7-43 Standby Lens XAK3151 XAK3240 XAK3240 XAK3240 No.18
P7-44 Deck Lens L XAK3159 XAK3249 XAK3249 XAK3249 No.3
P7-45 Deck Lens R XAK3160 XAK3250 XAK3250 XAK3250 No.5
P7-46 JOG Conductor XAK3165 XAK3244 XAK3244 XAK3244 No.22
P7-47 Deck Door_L XAN3021 XAN3041 XAN3041 XAN3041 No.2
P7-48 Deck Door_R XAN3025 XAN3042 XAN3042 XAN3042 No.4
P7-49 Front Panel XMB3026 XMB3056 XMB3056 XMB3056 No.1
O/C Button Not used XAD3103 XAD3103 XAD3103 No.16
P7-52 Spacer XEB3012 Not used Not used Not used
P7-53 Spacer XEB3013 Not used Not used Not used
P7-56 Connector Assy 3P XDE3037 XDE3036 XDE3036 XDE3036
Cushion Spacer XEB3015 Not used Not used Not used
Cushion Spacer XEB3016 Not used Not used Not used
Cushion Spacer XEB3017 Not used Not used Not used
Spacer XEC3014 Not used Not used Not used
Spacer XEC3019 Not used Not used Not used

XR-A790, XR-A390
7
12
1
13
15
18
17
19
16
24
22
25
21
96
10
11
5
4
25
23
14
20
7
8
3
2
EXPLODEDVIEWS
(1) FRONT PANEL ASSY PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 Front Panel XMB3056
2 Deck Door_L SeeContrasttable(2)
3 Deck Lens L XAK3249
4 Deck Door_R SeeContrasttable(2)
5 Deck Lens R XAK3250
6 Sub Panel XAK3255
7 FUNC Cap L XAK3247
8 FUNC Button L SeeContrasttable(2)
9 FUNC Cap R XAK3248
10 FUNC Button R SeeContrasttable(2)
11 DOLBY Button SeeContrasttable(2)
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 BPZ30P100FZK
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
(2) CONTRAST TABLE
XR-A790 and XR-A390 are constructed the same except for the following :
Mark No. Symbol and Description Part No. Remarks
XR-A790 XR-A390
2 Deck Door_L XAN3037 XAN3041
4 Deck Door_R XAN3038 XAN3042
8 FUNC Button L XAD3111 XAD3116
10 FUNC Button R XAD3112 XAD3117
11 DOLBY Button XAD3120 XAD3113

XR-A790, XR-A390
8
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
113
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)

XR-A790, XR-A390
9
32
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

XR-A790, XR-A390
10
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
103
102
23
•DECK MECHANISM UNIT (2/2)

XR-A790, XR-A390
11
34
106
85
28
29 30
87
31
70
35 107
37
43
36
33
32
25
68
69
27

XR-A790, XR-A390
12
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

XR-A790, XR-A390
13
CONTRAST OF PCB ASSEMBLIES
AF ASSY
F
F
XWZ3303 and XWZ3310 are constructed the same except for the following :
Mark Symbol and Description Part No. Remarks
XWZ3310 XWZ3303
IC5751 BU1923F Not used
Q5751 2SA1037K Not used
Q5752 DTC124EK Not used
L3333, L3334 ATH-133 Not used
L3991 Not used XTL3001
L5751 XTL3002 Not used
C1997, C3329, C3330 CKSRYB103K50 Not used
C2003, C2004 CKSRYB104K16 Not used
C2327–C2330, C3321, C3322, C3852, C3854 CCSRCH470J50 Not used
C3001, C3002, C3858 CCSRCH101J50 Not used
C3023, C3024 CFTLA564J50 CFTLA474J50
C3025, C3026 CKSRYB104K16 CKSRYB683K16
C3027, C3028 CFTLA334J50 CFTLA154J50
C3029, C3030 CKSRYB563K16 CKSRYB273K16
C3043, C3044, C3082 CEATR47M50 CEAT2R2M50
C3051, C3052, C3851, C3853, C3855 CKSRYB472K50 Not used
C3073–C3076 CKSRYB122K50 Not used
C3081 CEAT4R7M50 CEAT100M50
C3091 CEAT2R2M50 CEAT100M50
C3319, C3320 CCSRCH6R0D50 CCSRCJ3R0C50
C3335–C3338 CKSRYF104Z50 Not used
C3345, C3346 (0.01µF) ACG7021 Not used
C3447, C3448, C3991, C5753 CKSRYB102K50 Not used
C3850 CKSRYB473K16 Not used
C3994, C3995 CCSRCH681J50 Not used
C5751, C5752, C5755 CCSRCH270J50 Not used
C5754 CEAT330M16 Not used
C5756 CCSQCH561J50 Not used
C5757 CCSRCH271J50 Not used
C5758 CEAT100M50 Not used
R3333, R3334 RD1/4LMF101J RD1/4LMF100J
R3335, R3336 RS1/16S100J Not used
R3515–R3518 RS1/16S152J RS1/16S122J
R5751 RS1/16S223J Not used
R5752 RS1/16S222J Not used
R5753 RS1/16S101J Not used
R5754 RS1/16S102J Not used
CN3331 4P SPEAKER TERMINAL AKE7018 XKE3004
X5751 CRYSTAL RESONATOR (4.332MHz) ASS7004 Not used

XR-A790, XR-A390
14
AF ASSY
F
F
XWZ3288 and XWZ3297 are constructed the same except for the following :
Mark Symbol and Description Part No. Remarks
XWZ3297 XWZ3288
IC5751 BU1923F Not used
Q5751 2SA1037K Not used
Q5752 DTC124EK Not used
L3333, L3334 ATH-133 Not used
L3991 Not used XTL3001
L5751 XTL3002 Not used
C1997, C3329, C3330 CKSRYB103K50 Not used
C2327–C2330, C3321, C3322, C3852, C3854 CCSRCH470J50 Not used
C3001, C3002, C3858 CCSRCH101J50 Not used
C3023, C3024 CFTLA564J50 CFTLA474J50
C3025, C3026 CKSRYB104K16 CKSRYB683K16
C3027, C3028 CFTLA334J50 CFTLA154J50
C3029, C3030 CKSRYB563K16 CKSRYB273K16
C3043, C3044, C3082 CEATR47M50 CEAT2R2M50
C3051, C3052, C3853, C3855 CKSRYB472K50 Not used
C3073–C3076 CKSRYB122K50 Not used
C3081 CEAT4R7M50 CEAT100M50
C3091 CEAT2R2M50 CEAT100M50
C3319, C3320 CCSRCH6R0D50 CCSRCJ3R0C50
C3335–C3338 CKSRYF104Z25 Not used
C3345, C3346 (0.01µF) ACG7021 Not used
C3850 CKSRYB473K16 Not used
C3994, C3995 CCSRCH681J50 Not used
C5751, C5752, C5755 CCSRCH270J50 Not used
C5753 CKSRYB103K50 Not used
C5754 CEAT330M16 Not used
C5756 CCSQCH561J50 Not used
C5757 CCSRCH271J50 Not used
C5758 CEAT100M50 Not used
R3333, R3334 RD1/4LMF101J RD1/4LMF100J
R3335, R3336 RS1/16S100J Not used
R3509 RS1/16S393J RS1/16S473J
R3515–R3518 RS1/16S152J RS1/16S122J
R5751 RS1/16S223J Not used
R5752 RS1/16S222J Not used
R5753 RS1/16S101J Not used
R5754 RS1/16S102J Not used
X5751 CRYSTAL RESONATOR (4.332MHz) ASS7004 Not used

XR-A790, XR-A390
15
AWU7797, AWU7791 and XWZ3311 are constructed the same except for the following :
PRIMARY ASSY
F
H
Mark Symbol and Description Part No. Remarks
XWZ3311 AWU7797 AWU7791
Q5656-Q5658 2SC2412K 2SC2412K Not used
D5561, D5562 1SS181 1SS181 Not used
D5593 1SS133 1SS133 Not used
D5594 1SS355 Not used Not used
D5595, D5596 1SS355 Not used Not used
D5601-D5608, D5622 SLP3118C51H SLR-343MC(NPQ) Not used
D5610, D5611, D5615, D5616, D5904 SLP3118C51H SLR-343MC(NPQ) SLR-343MC(NPQ)
D5612, D5614 SLP6118C51H SLR-343DC(NPQ) SLR-343DC(NPQ)
D5617 SLP6118C51H Not used Not used
D5618 SLP3118C51H Not used Not used
D5619, D5620, D5903 SLP9118C51H SLR-343VC(NPQ) SLR-343VC(NPQ)
D5621 SLP6118C51H SLR-343MC(NPQ) Not used
D5652-D5655, D5657, D5658 1SS355 1SS355 Not used
D5902 SLP7118C51H SLR-343PC(KLM) SLR-343PC(KLM)
S5911, S5913, S5915–S5921, S5923–S5929 XSG3001 ASG1051 ASG1051
S5931–S5940 XSG3001 ASG1051 ASG1051
C3909 CKSRYB472K50 Not used Not used
C3913 CCSRCH471J50 Not used Not used
C3915 CCSRCH470J50 Not used Not used
C3920, C3921 CCSRCH101J50 Not used Not used
C3922 CKSRYB561K50 Not used Not used
C3951, C3952 CKSRYB103K50 Not used Not used
R3908 RS1/16S122J RS1/16S101J RS1/16S101J
R5518 RS1/16S102J Not used Not used
R5561, R5562 RS1/16S152J RS1/16S152J Not used
R5570, R5571 RS1/16S473J RS1/16S473J Not used
R5601, R5613, R5617 RD1/4PU151J RD1/4PU151J Not used
R5618, R5620, R5622 RS1/16S222J RS1/16S222J Not used
R5619, R5621, R5623 RS1/16S330J RS1/16S330J Not used
R5702, R5704 Not used RS1/16S223J RS1/16S223J
R9901, R9902 Not used RS1/16S101J Not used
CN2901 FFC CONNECTOR HLEM15R-1 HLEM15R-1 HLEM13R-1
XWZ3291, XWZ3294 and XWZ3312 are constructed the same except for the following :
Mark Symbol and Description Part No. Remarks
XWZ3312 XWZ3291 XWZ3294
S1 VOLTAGE SELECTOR Not used XKX3001 Not used
L1 LINE FILTER ATF1136 Not used Not used
H3–H6 FUSE CLIP Not used AKR7001 Not used
DISPLAY ASSY
F
I

XR-A790, XR-A390
16
Mark No. Description Part No. Mark No. Description Part No.
F
A
÷PCB PARTS LIST
FM/AMTUNER MODULE (AXQ7065)
SEMICONDUCTORS
IC6201 LA1832ML
IC6202 LC72131MD
Q6402 2SC2223
Q6203 2SC2705
Q6201,Q6202 2SC2712
Q6214,Q6403 2SC2714
Q6404 2SK302
Q6401 3SK194
Q6204 DTA124ES
Q6205 DTC124EK
D6202 1SS254
D6401,D6402 1T378A
COILS AND FILTERS
L6404 FM COIL ATC1003
L6401 FM RF COIL ATC1020
L6402 FM RF COIL ATC1021
F6204 FM CERAMIC FILTER ATF-107
F6203 FM CERAMIC FILTER ATF-119
F6401 FM BAND PASS FILTER ATF-155
F6206 FM CERAMIC DISCLI. ATF7008
F6202 AM CERAMIC FILTER ATF7011
L6206,L6208,L6403 LAU2R2J
TRANSFORMERS
T6201 ATB7008
T6401 ATE7002
CAPACITORS
C6208 CCSQCH100D50
C6212,C6274,C6275,C6408 CCSQCH101J50
C6412 CCSQCH102J50
C6221,C6222,C6416 CCSQCH150J50
C6271 CCSQCH200J50
C6415 CCSQCH330J50
C6406 CCSQCH331J50
C6401,C6419 CCSQCH5R0C50
C6407 CCSQCK1R0C50
C6410 CCSQCK2R0C50
C6413 CCSQRH180J50
C6414 CCSQRH8R0D50
C6405 CCSQTH150J50
C6234,C6235 CEAL1R0M50
C6245 CEAL470M16
C6224 CEAT100M50
C6243 CEAT101M16
C6231 CEAT1R0M50
C6227 CEAT220M25
C6214,C6236 CEAT2R2M50
C6262 CEAT3R3M50
C6219 CEAT470M10
C6244 CEAT470M16
C6249,C6250,C6265,C6266 CEAT4R7M50
C6258 CEJA470M16
C6215 CFTLA103J50
C6211,C6254,C6403,C6417 CKSQYB102K50
C6201,C6205,C6210,C6237,C6276 CKSQYB103K50
C6278,C6280,C6281,C6402,C6409 CKSQYB103K50
C6418 CKSQYB103K50
C6251,C6252 CKSQYB153K50
C6203,C6259 CKSQYB223K50
C6228 CKSQYB472K50
C6209 CKSQYB473K50
C6230 CKSQYB821K50
C6218,C6223,C6255 CKSQYF103Z50
C6220,C6226,C6242,C6256 CKSQYF223Z50
C6225 CKSQYF473Z50
RESISTORS
R6280 RD1/4PU101J
R6413,R6416,R6418,R6906,R6909 RS1/8S0R0J
R6401 RS1/8S470J
VR6201 (10kΩ) PCP1029
Other Resistors RS1/10S J
OTHERS
BN6202 4P ANTENNA TERMINAL AKE7051
X6202 CERAMIC RESONATOR ASS1066
(456kHz)
X6201 CRYSTAL RESONATOR ASS1093
(7.2000MHz)
CN6201 14P SOCKET KP200IA14L
MW RF TUNING BLOCK AKX7041

XR-A790, XR-A390
17
A
B
C
D
1234
1234
3. SCHEMATIC DIAGRAM
3.1 AF (3/3) ASSY
3/3F
F
XR-A790
ONLY
XR-A390
ONLY
R3626
XR-A790 : 18k
XR-A390 : 12k
XR-A790 : XKE3004
XR-A390 : AKE7018
FRONT
SPEAKERS
F3/3F
AF ASSY
(XR-A790 : XWZ3303)
(XR-A390 : XWZ3288)
Note :When ordering service parts, be sure to refer to "EXPLODEDVIEWS and PARTS LIST" or "PCB PARTS LIST"

XR-A790, XR-A390
18
A
B
C
D
1234
1234
RF AMP
1T378A
1T378A
MIX AMP
BUFFER
IF AMP
FM +B SW
MW RF TUNING BLOCK
AKX7041
OSC
F
A
3.2 FM/AMTUNER MODULE

XR-A790, XR-A390
19
A
B
C
D
5678
5678
F
A
FM/AM TUNER MODULE
(AXQ7065)
CN6201
KP200IA14L
AF AMP
REGULATOR
PLL
AF AMP
2/3F
CN3051
F
A

XR-A790, XR-A390
20
A
B
C
D
1234
1234
F
H
3.3 PRIMARY ASSY
J81
I
G
POWER TRANSFORMER
XR-A790 : XTS3037
XR-A390 : XTS3036