A-207-R
STEREO AMPLIFIER
POWER
OFF ON
BASS
A SPEAKERS B
PHONES
TREBLE
–
–
+
VOLUME
Direct Energy MOS
LOUDNESS DIRECT
+
MIN MAX
TAPE 1
TUNER
CD
BALANCE
L
TAPE 2
PHONO
LINE
/MD
MONITOR
INPUT SELECTOR
TAPE 2
MONITOR
R
The illustration shows the A-307R.
STEREO AMPLIFIER
A-307R
A-207R
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type
A-307R A-207R
Model
Power Requirement
MYXJ/EW AC220-230V ––––
MYXJ/GR AC220-230V ––––
MVXJ – AC220-230V ––––
SAMXJ – AC110V/120-127V/220V/240V With the voltage selector
SDXJ – AC110V/120-127V/220V/240V With the voltage selector
The voltage can be converted by the
following method.
ORDER NO.
RRV1912
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 ............................................... 22
6. ADJUSTMENT .................................................... 25
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 Lane Crawford Place, Singapore 0923
c
PIONEER ELECTRONIC CORPORATION 1998
7. GENERAL INFORMATION ................................ 26
7.1 IC ................................................................. 26
7.2 DISASSEMBLY ........................................... 27
7.3 BLOCK DIAGRAM....................................... 28
8. PANEL FACILITIES AND SPECIFICATIONS.... 29
T - IZK APR. 1998 Printed in Japan
A-307R, A-207R
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
A-307R, A-207R
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.
•
MVXJ type Only
19
20
8
10
11
17
FRONT
12
13
Except
MVXJ type
18
6
7
9
16 (SAMXJ
type Only)
5
15
(SAMXJ type
Only)
1 (Except
MYXJ/GR type)
2 (MYXJ/EW and
MYXJ/GR types
Only)
3 (MYXJ/EW
type Only)
4 (MYXJ/EW,
MYXJ/GR and
MVXJ types
Only)
14 (SAMXJ
type Only)
21 (SDXJ
type Only)
(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 See Contrast table(2)
5 Remote Control Unit (CU-A014) AXD7163
6 Battery Cover AZN2249
NSP 7 Dry Cell Battery (R6P,AA) VEM-013
8 Side Pad L AHA7205
9 Side Pad R AHA7206
10 Sub Pad AHA7218
11 Packing Case See Contrast table(2)
NSP 12 Literature Bag AHG1180
13 Packing Sheet AHG7015
14 Operating Instructions See Contrast table(2)
(Chinese)
15 Caution Label 220V See Contrast table(2)
16 Case Label See Contrast table(2)
NSP 17 Air Cap See Contrast table(2)
18 Power Cord See Contrast table(2)
19 Power Cord with Fuse See Contrast table(2)
20 Fuse (T5A) See Contrast table(2)
21 Operating Instructions See Contrast table(2)
(Spanish/Chinese)
(2) CONTRAST TABLE
A-307R/MYXJ/EW, MYXJ/GR, SAMXJ, SDXJ, A-207R/MYXJ/EW, MYXJ/GR and MVXJ are constructed the same
except for the following :
.oNtraP
kraM.oNnoitpircseDdnalobmyS
1
2
3
PSN
4
11
41
51
61
PSN
71
81
91
02
12
WE/JXYMRG/JXYMJXMASJXDSWE/JXYMRG/JXYMJXVM
)hsilgnE(snoitcurtsnIgnitarepO
)namreG(snoitcurtsnIgnitarepO
/nailatI/hcnerF(snoitcurtsnIgnitarepO
)eseugutroP/hsinapS/hsidewS/hctuD
draCytnarraW
esaCgnikcaP
)esenihC(snoitcurtsnIgnitarepO
V022lebaLnoituaC
lebaLesaC
paCriA
droCrewoP
esuFhtiwdroCrewoP
)A5T(esuF
snoitcurtsnIgnitarepO
)esenihC/hsinapS(
8317BRA
3817CRA
4817CRA
9007YRA
3657DHA
desutoN
desutoN
desutoN
desutoN
4511GDA
desutoN
desutoN
desutoN
desutoN
3817CRA
desutoN
9007YRA
3657DHA
desutoN
desutoN
desutoN
desutoN
4511GDA
desutoN
desutoN
desutoN
2417BRA
desutoN
desutoN
desutoN
1857DHA
6817CRA
3001RRA
2307WRA
desutoN
8107GDA
desutoN
desutoN
desutoN
2417BRA
desutoN
desutoN
desutoN
4657DHA
desutoN
desutoN
desutoN
desutoN
8511GDA
desutoN
desutoN
5817CRA
8317BRA
3817CRA
4817CRA
9007YRA
1657DHA
desutoN
desutoN
desutoN
desutoN
4511GDA
desutoN
desutoN
desutoN
desutoN
3817CRA
desutoN
9007YRA
1657DHA
desutoN
desutoN
desutoN
desutoN
4511GDA
desutoN
desutoN
desutoN
8317BRA
desutoN
desutoN
9007YRA
1657DHA
desutoN
desutoN
desutoN
7801GHA
desutoN
6511GDA
6401KEA
desutoN
skrameRR703-AR702-A
3
A-307R, A-207R
2.2 EXTERIOR
36
39
26
39
30 or 45
31
28
38
39
18
37
33
41
31
32
16
34
35
27
39
26
39
A-307R
Only
24
39
A-307R/
SAMXJ and
SDXJ Types
Only
3
1
5
2
9
22
14
27
41
25
11
39
29 or 44
20
A-307R Only
12
6
17
19
43
19
39
15
8
4
15
15
7
13
39
23
42
39
15
A-307R/SAMXJ
and SDXJ
Types Only
39
39
23
23
39
A-307R
/SAMXJ
Type Only
46
40
17
39
21
21
14
39
20
A-307R Only
4
(1) EXTERIOR PARTS LIST
A-307R, A-207R
Mark No. Description Part No.
1 FRONT L Assy AWX7123
2 FRONT R Assy AWX7124
3 OPT Assy AWX7125
4 AC PRIMARY Assy See Contrast table(2)
NSP 5 HEADPHONE Assy AWX7114
6 VOLUME Assy AWX7118
7 AF Assy See Contrast table(2)
8 Fuse (FU1) See Contrast table(2)
9 Flexible Cable (19P) ADD7032
(AF CN202-FRONT R CN601)
10 • • • • •
11 Power Transformer (T1) See Contrast table(2)
NSP 12 Chassis ANA7064
13 Rear Panel See Contrast table(2)
14 Insulator PNW2766
15 Screw ABA1018
16 Screw ABA1027
17 Screw (4 × 10) ABA7047
18 Nut ABN-065
19 PCB Support AEC7006
20 Rubber Spacer See Contrast table(2)
NSP 21 PCB Holder AEC7057
NSP 22 Cord Clamp F AEC7134
23 PCB Mold AMR2533
NSP 24 Damping Plate See Contrast table(2)
NSP 25 Shield Plate ANK7043
Mark No. Description Part No.
26 Screw PBA1096
27 LED Lens AAK2459
28 IR Filter AAK7532
29 LED Lens T See Contrast table(2)
30 Name Plate See Contrast table(2)
31 Rotary Knob A AAB7148
32 Rotary Knob B AAB7149
33 Volume Knob AAB7150
34 Speaker Button AAD7435
35 Power Joint AAD7439
36 Bonnet Case ANE7183
37 Panel Base AMB7489
38 Front Panel See Contrast table(2)
39 Screw BBZ30P080FZK
40 Screw BCZ30P060FCC
41 Nut NK90FUC
42 Voltage Selector (S2) See Contrast table(2)
43 Fuse (FU2, FU3 : 2A) See Contrast table(2)
44 LED Lens A See Contrast table(2)
45 PIONEER Badge See Contrast table(2)
46 Label (Rear Base) See Contrast table(2)
(2) CONTRAST TABLE
A-307R/MYXJ/EW, MYXJ/GR, SAMXJ, SDXJ, A-207R/MYXJ/EW, MYXJ/GR and MVXJ are constructed the same
except for the following :
.oNtraP
kraM.oNnoitpircseDdnalobmyS
4
7
8
8
8
8
11
11
31
02
PSN
42
92
03
83
24
34
44
54
64
WE/JXYMRG/JXYMJXMASJXDSWE/JXYMRG/JXYMJXVM
yssAFA
yssAYRAMIRPCA
)A2:1UF(esuF
)A5.2:1UF(esuF
)A3.6:1UF(esuF
)A52.1:1UF(esuF
)V032-022CA:1T(remrofsnarTrewoP
remrofsnarTrewoP
)V042/V022/V721-021/V011CA:1T(
lenaPraeR
recapSrebbuR
etalPgnipmaD
TsneLDEL
etalPemaN
lenaPtnorF
)2S(rotceleSegatloV
)A2:3UF,2UF(esuF
AsneLDEL
egdaBREENOIP
)esaBraeR(lebaL
3117XWA
9117XWA
5201KER
desutoN
desutoN
desutoN
8817STA
desutoN
3467CNA
4307CEA
6127RMA
4457KAA
4007MAA
4117BNA
desutoN
desutoN
desutoN
desutoN
desutoN
3117XWA
9117XWA
5201KER
desutoN
desutoN
desutoN
8817STA
desutoN
3467CNA
4307CEA
6127RMA
4457KAA
4007MAA
4117BNA
desutoN
desutoN
desutoN
desutoN
desutoN
5117XWA
9117XWA
desutoN
6201KER
desutoN
desutoN
desutoN
9817STA
5467CNA
4307CEA
6127RMA
4457KAA
4007MAA
4117BNA
705-XKA
5201KER
desutoN
desutoN
9941WRP
5117XWA
9117XWA
desutoN
desutoN
0301KER
desutoN
desutoN
9817STA
4467CNA
4307CEA
6127RMA
4457KAA
4007MAA
4117BNA
705-XKA
5201KER
desutoN
desutoN
desutoN
3117XWA
7117XWA
desutoN
desutoN
desutoN
3201KER
0917STA
desutoN
9367CNA
desutoN
desutoN
desutoN
desutoN
3947BMA
desutoN
desutoN
7357KAA
5571MAP
desutoN
3117XWA
7117XWA
desutoN
desutoN
desutoN
3201KER
0917STA
desutoN
9367CNA
desutoN
desutoN
desutoN
desutoN
3947BMA
desutoN
desutoN
7357KAA
5571MAP
desutoN
3117XWA
7117XWA
desutoN
desutoN
desutoN
3201KER
0917STA
desutoN
9367CNA
desutoN
desutoN
desutoN
desutoN
3947BMA
desutoN
desutoN
7357KAA
5571MAP
desutoN
skrameRR703-AR702-A
5
1
23
A-307R, A-207R
3. SCHEMATIC DIAGRAM
3.1 OVERALL CONNECTION DIAGRAM
A
4
B
HEADPHONE ASSY
AWX7114
B
F
FRONT R ASSY
AWX7124
D
AF ASSY
AWX7119(A-307R)
AWX7117(A-207R)
C
451
A
VOLUME ASSY
AWX7118
D
6
1234
5
678
A-307R, A-207R
Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PAR TS LIST" or "PCB PARTS LIST".
E
FRONT L ASSY
AWX7123
A
G
OPT ASSY
AWX7125
POWER TRANSFORMER
ATS7188 : A-307R/MYXJ/EW, MYXJ/GR ( )
ATS7190 : A-207R/MYXJ/EW, MYXJ/GR and NVXJ
A-307R
(13)
(15)
(17)
C
AC PRIMARY ASSY
AWX7113
(MYXJ/EW, MYXJ/GR, MVXJ)
AWX7115
(SDXJ, SAMXJ)
MYXJ/EW, MYXJ/GR,
MVXJ types
S2 : AKX-507
VOLTAGE
SELECTOR
MYXJ/EW, MYXJ/GR types
SDXJ type
SAMXJ type
A-307R/SDXJ, SAMXJ
ADG1154 : MYXJ/EW, MYXJ/GR types
AC POWER CORD
ADG1156 : MVXJ type
ADG1158 : SDXJ type
ADG7018 : SAMXJ type
B
C
POWER TRANSFORMER
ATS7189
5
D
7
6
7
8
1
23
A-307R, A-207R
3.2 VOLUME AND HEADPHONE ASSEMBLIES
A
B
HEADPHONE ASSY
AWX7114
B
D
4
J551A
: AUDIO SIGNAL ROUTE
VOLUME ASSY
A
C
AWX7118
J3
E
D
CN203
D
8
A
B
1234
1
3.3 AC PRIMARY ASSY
234
A-307R, A-207R
LIVE
TO POWER
TRANSFORMER
NEUTRAL
• NOTE FOR FUSE REPLACEMENT
CAUTION -
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE.
REPLACE WITH SAME TYPE AND RATINGS ONLY.
AC PRIMARY ASSY
C
AWX7113 (MYXJ/EW, MYXJ/GR, MVXJ)
AWX7115 (SDXJ, SAMXJ)
SDXJ, SAMXJ
types
REK1025
T2AL250V
MYXJ/EW,
MYXJ/GR,
MVXJ types
POWER
S801
ASG1035
REK1025
T2AL250V
MYXJ/EW, MYXJ/GR, MVXJ types
MYXJ/EW, MYXJ/GR, types
SDXJ type
SAMXJ type
TO
AC POWER
CORD
A
B
A-307R
SDXJ, SAMXJ
C
TO S2
VOLTAGE
SELECTOR
D
C
1
2
3
4
9
1
A-307R, A-207R
3.4 AF ASSY
A
23
: AUDIO SIGNAL ROUTE
AF ASSY
D
AWX7119 (A-307R)
AWX7117 (A-207R)
4
C313,C337 :
B
C
IDLE ADJ.
(L CH)
C314,C338 :
IDLE ADJ.
(R CH)
D
CN501
A
10
D
1234
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