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
CONTENTS
7. GENERAL INFORMATION ................................ 23
7.1 IC INFORMATION ....................................... 23
7.2 BLOCK DIAGRAM....................................... 24
8. PANEL FACILITIES AND SPECIFICATIONS.... 25
A-407R
STEREO AMPLIFIER
ORDER NO.
RRV1958
T - IZK MAY 1998 Printed in Japan
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
PIONEER ELECTRONIC CORPORATION 1998
c
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type
Model
Power Requirement Remarks
A-407R
MY/EW AC220 – 230V
MY/GR AC220 – 230V
MV AC220 – 230V
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
2
A-407R
1. SAFETY INFORMATION
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.
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.
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
on the schematics and on the parts list
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.
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.
(FOR USA MODEL ONLY)
Leakage
current
tester
Reading should
not be above
0.5mA
Device
under
test
Test all
exposed metal
surfaces
Also test with
plug reversed
(Using AC adapter
plug as required)
Earth
ground
AC Leakage Test
3
A-407R
2.1 PACKING
Mark No. Description Part No.
2. EXPLODED VIEWS AND PARTS LIST
NOTES:
•
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 the product are used for disassembly.
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)
(1) PACKING PARTS LIST
(2) CONTRAST TABLE
A-407R/MY/EW, MY/GR and MV are constructed the same except for the following :
kraM.oNnoitpircseDdnalobmyS
.oNtraP
skrameR
epyTWE/YMepyTRG/YMepyTVM
PSN
1
2
3
41
51
61
71
)hsilgnE(snoitcurtsnIgnitarepO
)namreG(snoitcurtsnIgnitarepO
snoitcurtsnIgnitarepO
)eseugutroP/hsinapS/hsidewS/hctuD/nailatI/hcnerF(
paCriA
droCrewoP
esuFhtiwdroCrewoP
)A5T(esuF
9317BRA
7817CRA
8817CRA
desutoN
4511GDA
desutoN
desutoN
desutoN
7817CRA
desutoN
desutoN
4511GDA
desutoN
desutoN
9317BRA
desutoN
desutoN
7801GHA
desutoN
6511GDA
6401KEA
6
12
14
17
16
13
Separate
Separate
8
11
9
5
7
15
MV type Only
Except
MV type
1 (Except
MY/GR type)
3 (MY/EW
type Only)
2 (MY/EW and
MY/GR types
Only)
4
FRONT
5
A-407R
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.
Mark No. Description Part No.
(1) EXTERIOR PARTS LIST
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
.oNtraP
skrameR
epyTWE/YMepyTRG/YMepyTVM
4
31
yssAYRAMIRPCA
lenaPraeR
1507XWA
6467CNA
1507XWA
6467CNA
6507XWA
0667CNA