PIONEER X-A790/YPWXJ - Service Manual Immediate Download

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, 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

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

Remarks

/MYXJ

/DBDXJ

/DDXJ/AR

/YPWXJ

PCB ASSEMBLIES

MAIN ASSY

XWM3163

XWM3161

P5- 1

AF ASSY

XWZ3310

XWZ3303

COMPLEX ASSY

XWM3168

AWM7613

AWM7614

P5- 3

PRIMARY ASSY

XWZ3312

XWZ3291

XWZ3294

P7- 1

DISPLAY ASSY

XWZ3311

AWU7797

P5- 4

FM/AM TUNER Module

AXQ7068

AXQ7065

PACKING SECTION

P3- 1

Power Cord

ADG1154

ADG1158

ADG1160

P3- 2

FM Antenna

ADH7005

ADH7004

P3- 6

NSP

Dry Cell Battery (R6P, AA)

VEM-013

Not used

VEM-013

P3- 8

Front Pad

XHA3018

XHA3028

P3- 9

Rear Pad

XHA3019

XHA3029

P3-10

Packing Case

XHD3143

XHD3272

XHD3292

XHD3273

P3-11

NSP

Warranty Card

ARY7022

Not used

ARY7047

P3-13

Operating Instructions (English/French)

XRE3030

Not used

XRE3046

P3-14

Operating Instructions

XRC3020

Not used

(Italian/Dutch/German)

P3-15

Operating Instructions

XRC3021

Not used

(Portuguese/Swedish/Spanish)

P3-16

NSP

Polyethylene Bag

Not used

AHG7033

Operating Instructions

Not used

XRE3048

Not used

(English/Chinese/Spanish)

Power Cord

Not used

XDG3009

Not used

Power-cord Plug Conversion Adapter

Not used

XKM3002

Not used

Accessories

Caution Sheet AR

XRH3004

Not used

XRH3002

Not used

EXTERIOR SECTION

P5- 6

Ceramic Capacitor (C1)

CKPUYB102K50

Not used

P5-15

Rear Panel

XNC3058

XNC3125

XNC3126

P5-17

Earth Plate

XNG3015

Not used

P5-26

Tray Cap

XAK3156

XAK3236

Tray Panel CD

Not used

XAK3235

For Tray Cap

P5-30

Caution Label HE

PRW1233

Not used

P5-31

Caution Label

VRW1094

PRW1018

VRW1872

PRW1018

P5-36

NSP

Getter

XAX3169

XAX3267

XAX3266

P5-44

Barrier

XEC3013

XEC3027

Rear Sheet

AED7037

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

Remarks

/MYXJ

/DBDXJ

/DDXJ/AR

/YPWXJ

Fuse (FU2, FU3 : T3.15A)

Not used

AEK1059

Not used

*1

Fuse Card (For FU2, FU3)

Not used

AAX7493

Not used

*2

NSP

Name Label

Not used

XAL3095

Not used

*3

FRONT PANEL SECTION

P7-18

Volume Knob

XAA3013

XAA3022

P7-21

FUNC Button L

XAD3050

XAD3111

No.8

FUNC Cap L

Not used

XAK3247

No.7

P7-22

FUNC Button R

XAD3051

XAD3112

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

XAK3130

XAK3265

P7-27

EQ Panel

XAK3150

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

XAD3044

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

XAD3120

No.11

P7-42

Sub Panel

XAK3199

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

XAN3022

XAN3037

No.2

P7-48

Deck Door_R

XAN3026

XAN3038

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

Cushion Spacer

XEB3015

Not used

Cushion Spacer

XEB3016

Not used

Cushion Spacer

XEB3017

Not used

Spacer

XEC3014

Not used

Spacer

XEC3019

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.

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

Remarks

/MYXJ

/DBDXJ

/DDXJ/AR

/YPWXJ

PCB ASSEMBLIES

MAIN ASSY

XWM3152

XWM3151

P5- 1

AF ASSY

XWZ3297

XWZ3288

COMPLEX ASSY

XWM3158

AWM7606

AWM7607

P5- 3

PRIMARY ASSY

XWZ3299

XWZ3291

XWZ3294

P7- 1

DISPLAY ASSY

XWZ3298

AWU7791

P5- 4

FM/AM TUNER Module

AXQ7068

AXQ7065

PACKING SECTION

P3- 1

Power Cord

ADG1154

ADG1158

ADG1160

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

XHD3265

XHD3293

XHD3263

P3-11

NSP

Warranty Card

ARY7022

Not used

ARY7047

P3-13

Operating Instructions (English/French)

XRE3030

Not used

XRE3046

P3-14

Operating Instructions

XRC3020

Not used

(Italian/Dutch/German)

P3-15

Operating Instructions

XRC3021

Not used

(Portuguese/Swedish/Spanish)

P3-16

NSP

Polyethylene Bag

Not used

AHG7033

Operating Instructions

Not used

XRE3048

Not used

(English/Chinese/Spanish)

Power Cord

Not used

XDG3009

Not used

Power-cord Plug Conversion Adapter

Not used

XKM3002

Not used

Accessories

Caution Sheet

XRH3004

Not used

XRH3002

Not used

EXTERIOR SECTION

P5- 6

Ceramic Capacitor (C1)

CKPUYB102K50

Not used

P5-15

Rear Panel

XNC3053

XNC3122

XNC3130

XNC3120

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

PRW1018

VRW1872

PRW1018

P5-36

NSP

Getter

XAX3163

XAX3263

XAX3262

P5-44

Barrier

XEC3013

XEC3027

Rear Sheet

AED7037

Not used

Fuse (FU2, FU3 : T2A)

Not used

AEK1057

Not used

*1

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