Pioneer A-407-R Service manual

STEREO AMPLIFIER

STEREO AMPLIFIER

A-407R Direct Energy MOS

STANDBY/ON

STANDBY

OFF ON

POWER

A SPEAKERS B BASS TREBLE

PHONES

LOUDNESS

MIN MAX

VOLUME

DIRECT

BALANCE INPUT SELECTOR REC SELECTOR

CD TUNER PHONO LINE

TAPE 1
/MD

TAPE 2

MONITOR

CD TUNER

OFF SOURCE

L R

A-407R

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

Type

MY/EW AC220 – 230V
MY/GR AC220 – 230V
MV AC220 – 230V

Model

A-407R

Power Requirement Remarks

ORDER NO.

RRV1958

CONTENTS

1. SAFETY INFORMATION ...................................... 2

2. EXPLODED VIEWS AND PARTS LIST................ 3

3. SCHEMATIC DIAGRAM ....................................... 6

4. PCB CONNECTION DIAGRAM.......................... 14

5. PCB PARTS LIST ............................................... 19

6. ADJUSTMENT .................................................... 22

PIONEER ELECTRONIC 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 ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Wheelock Place, Singapore 238880

c

PIONEER ELECTRONIC CORPORATION 1998

7. GENERAL INFORMATION ................................ 23

7.1 IC INFORMATION ....................................... 23

7.2 BLOCK DIAGRAM....................................... 24

8. PANEL FACILITIES AND SPECIFICATIONS.... 25

T - IZK MAY 1998 Printed in Japan

A-407R

1. SAFETY INFORMATION

This service manual is intended for qualified service technicians ; it is not meant for the casual do-it­yourselfer. 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.

WARNING
Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant which may
cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249.5).
When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with
the solder. Also, when soldering do not inhale any smoke or fumes produced.

NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts must
be of identical designation.

REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les pièces
de remplacement doivent avoir la même désignation.

(FOR USA MODEL ONLY)

1. SAFETY PRECAUTIONS

The following check should be performed for the
continued protection of the customer and service
technician.

LEAKAGE CURRENT CHECK

Measure leakage current to a known earth ground (water
pipe, conduit, etc.) by connecting a leakage current tester
such as Simpson Model 229-2 or equivalent between the
earth ground and all exposed metal parts of the appliance
(input/output terminals, screwheads, metal overlays, control
shaft, etc.). Plug the AC line cord of the appliance directly
into a 120V AC 60Hz outlet and turn the AC power switch
on. Any current measured must not exceed 0.5mA.

Reading should
not be above

0.5mA

Earth
ground

Device
under
test

Also test with
plug reversed
(Using AC adapter
plug as required)

Leakage
current
tester

Test all
exposed metal
surfaces

ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE APPLIANCE TO THE CUSTOMER.

2. PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in the appliance
have special safety related characteristics. These are
often not evident from visual inspection nor the protection
afforded by them necessarily can be obtained by using
replacement components rated for voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this Service Manual.
Electrical components having such features are identified
by marking with a
in this Service Manual.
The use of a substitute replacement component which does
not have the same safety characteristics as the PIONEER
recommended replacement one, shown in the parts list in
this Service Manual, may create shock, fire, or other hazards.
Product Safety is continuously under review and new
instructions are issued from time to time. For the latest
information, always consult the current PIONEER Service
Manual. A subscription to, or additional copies of, PIONEER
Service Manual may be obtained at a nominal charge from
PIONEER.

on the schematics and on the parts list

AC Leakage Test

2

2. EXPLODED VIEWS AND PARTS LIST

NOTES:• Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.

2.1 PACKING

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.

•

A-407R

MV type Only

16

8

17

14

Separate

FRONT

12

13

Except
MV type

15

6

7

Separate

5

1 (Except
MY/GR type)

2 (MY/EW and
MY/GR types
Only)

3 (MY/EW
type Only)

4

9

(1) PACKING PARTS LIST

Mark No. Description Part No.

1 Operating Instructions See Contrast table(2)

(English)

2 Operating Instructions See Contrast table(2)

(German)

3 Operating Instructions See Contrast table(2)

(French/Italian/Dutch/Swedish/Spanish/Portugese)
NSP 4 Warranty Card ARY7008

5 Remote Control Unit (CU-A013) AXD7164
6 Battery Cover AZN2249

NSP 7 Dry Cell Battery (R6P,AA) AEX-010

8 Side Protector L AHA7127

9 Side Protector R AHA7128
10 • • • • •
11 Packing Case AHD7565

NSP 12 Literature Bag AHG-117

13 Packing Sheet AHG1016

NSP 14 Air Cap See Contrast table(2)
15 Power Cord See Contrast table(2)
16 Power Cord with Fuse See Contrast table(2)
17 Fuse (T5A) See Contrast table(2)

11

(2) CONTRAST TABLE

A-407R/MY/EW, MY/GR and MV are constructed the same except for the following :

kraM.oNnoitpircseDdnalobmyS

1
2
3

PSN

41
51
61
71

paCriA

droCrewoP
)A5T(esuF

epyTWE/YMepyTRG/YMepyTVM

)hsilgnE(snoitcurtsnIgnitarepO

)namreG(snoitcurtsnIgnitarepO

snoitcurtsnIgnitarepO

)eseugutroP/hsinapS/hsidewS/hctuD/nailatI/hcnerF(

esuFhtiwdroCrewoP

9317BRA
7817CRA
8817CRA

desutoN

4511GDA
desutoN
desutoN

.oNtraP

desutoN

7817CRA

desutoN

desutoN

4511GDA
desutoN
desutoN

skrameR

9317BRA
desutoN
desutoN

7801GHA
desutoN

6511GDA

6401KEA

3

A-407R

2.2 EXTERIOR

36

42

39

42

30

35

28

38

18

37

48

43

41

44

47

15

42

42

40

39

39

8

15

39

45

26

42

39

42

15

45

42

16

19

4

26

3

16

34

10

27

49

44

5

10

41

27

44

29

6

26

23

15

45

20

23

1

2

17

43

9

17

45

17

11

24

24

15

15

7

MY/EW, MY/GR
Types only

13

42

23

15

45

45

23

23

14

26

31

33

31

32

42

46

12

14

22

26

21

21

25

4

(1) EXTERIOR PARTS LIST

A-407R

Mark No. Description Part No.

1 FRONT L Assy AWX7054
2 FRONT R Assy AWX7050
3 POWER SW Assy AWX7057
4 AC PRIMARY Assy See Contrast table(2)

NSP 5 HEADPHONE Assy AWX7052

6 VOLUME Assy AWX7055
7 AF Assy AWX7053

8 Fuse (FU1, T2A L250V) AEK1057

9 Flexible Cable (J1, 21P) ADD1114

(AF CN202 - FRONT R CN601)

10 Washer ABE1002

11 Power Transformer (T1) ATS7202
NSP 12 Chassis ANA7048

13 Rear Panel See Contrast table(2)
14 Insulator PNW2766
15 Screw ABA1018

16 Screw ABA1050
17 Screw (4 × 10) ABA7047
18 Nut ABN-065

NSP 19 PCB Mold AMR7222

20 Barrier AEC7072

NSP 21 PCB Holder AEC7057

22 Stud Cover AEC7096
NSP 23 PCB Mold AMR1525
NSP 24 Radiator Plate B AMR7223

25 Locking Card Spacer DEC1908

Mark No. Description Part No.

26 Screw ABA-298
27 LED Lens AAK2459
28 IR Filter AAK7532
29 LED Lens T AAK7544
30 Name Plate AAM7004

31 Rotary Knob A AAB7148
32 Rotary Knob B AAB7149
33 Volume Knob AAB7147
34 Speaker Button AAD7435
35 Main Power Button AAD7437

36 Bonnet Case ANE7185
37 Panel Base AMB7484
38 Front Panel ANB7112
39 Screw BBT30P080FZK
40 Terminal Screw AKE-031

41 Nut NK90FUC
42 Screw ABA1006
43 Screw ABA1009
44 Screw BPZ30P080FMC
45 Washer WG40FCC

46 LED Lens B AAK7538
47 LED Lens PNW2019
48 Power Button AAD7436
49 Screw BMZ30P080FCU

(2) CONTRAST TABLE

A-407R/MY/EW, MY/GR and MV are constructed the same except for the following :

kraM.oNnoitpircseDdnalobmyS

4
31

epyTWE/YMepyTRG/YMepyTVM

yssAYRAMIRPCA

lenaPraeR

1507XWA

6467CNA

.oNtraP

1507XWA

6467CNA

skrameR

6507XWA

0667CNA

5

1

23

A-407R

3. SCHEMATIC DIAGRAM

3.1 OVERALL CONNECTION DIAGRAM

4

A

B

HEADPHONE

F

ASSY
(AWX7052)

D

AF ASSY

A

(AWX7053)

FRONT R ASSY
(AWX7050)

C

VOLUME ASSY

C

(AWX7055)

D

6

1234

5

678

A-407R

Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".

FRONT L ASSY

B

(AWX7054)

AC PRIMARY ASSY

E

(MY/EW, MY/GR : AWX7051)
(MV : AWX7056)

POWER SW

G

ASSY
(AWX7057)

A

B

C

D

7

5

6

7

8

1

A-407R

23

4

3.2 AF ASSY

A

B

C

CN501

C

D

8

A

1234

: AUDIO SIGNAL ROUTE

5

678

A-407R

D

CN601

E

CN803

AF ASSY

A

(AWX7053)

A

B

TO POWER TRANSFORMER T1

C

L406

ATX1012

D

F

J5

A

5

6

7

8

9