PIONEER XR-A790/DDXJ/AR Service Manual

Cover page of PIONEER XR-A790/DDXJ/AR Service Manual

Service Manual for PIONEER XR-A790/DDXJ/AR, downloadable as a PDF file.

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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
background image
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
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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, 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
Printed on the Rear Panel
(Except XR-A390/DBDXJ)
DBDXJ and YPWXJ TYPES
DDXJ/AR TYPE
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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 101
47 x 103
R50
1R0
561
473
5.62k
RN1/4PC
F
562 x 101
5621
CONTRAST TABLE 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 :
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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 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 Stick Fuse Card on the PRIMARY ASSY.
*3 Stick Name Label on the Rear Panel.
background image
XR-A790, XR-A390
5
XR-A390/DBDXJ, DDXJ/AR, YPWXJ and XR-A4800/MYXJ are constructed the same except for the following :
CONTRAST TABLE 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

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