AM-2450 SCHEMATIC DIAGRAMakdatabase.org/AKview/albums/userpics/10007/Akai AM... · tr7 2sd718(r,o)...
1
R50 10k C25 47 C21 47 7 6 5 4 8 9 11 10 3 2 1 12 13 14 6 9 5 4 1 8 7 2 3 MAIN VOL. B. BALANCE P.C. BOARD M3-4502A/B TONE CONTROL P.C. BOARD M3-4503 MAIN AMP. P.C. BOARD M3-4504A LED P.C. BOARD M3-4504C TAPE P.C. BOARD M3-4501B INPUT P.C. BOARD M3-4501A 19 12 20 22 21 15 16 18 17 11 25 13 7 8 9 4 5 3 6 28 26 27 1 2 23 24 14 3 10 6 5 1 9 4 5 6 7 8 1 2 3 4 2 5 1 3 4 1 2 3 5 6 2 8 4 7 1 2 3 1 1 1 1 2 3 7 2 1 3 8 9 10 11 12 5 6 4 10 RED RED ORG BRN ORG WHT WHT WHT BLK VLT VLT BLU RED ORG ORG WHT WHT BLK VLT VLT YLW RED ORG ORG WHT WHT BLK VLT VLT WHT BLU GRN/ YLW BRN J903 SW901 RED ORG ORG WHT WHT BLK VLT VLT BLU BLU GRN/ YLW BRN CEE ! ! ! C901 4700p/250 ! ! C902 4700p/250 C901 0.01/125(P) T901 AM-2450T-40 F2 630mAT F3 4AT ! ! F1 630mAT F4 4AT ! ! ! SW901 SW901 J902 J902 ! ! ! ! ! ! ! ! C901 4700p/250 ! C902 4700p/250 T901 AM-2450T-50 F2 630mAT F2 800mA F3 4AT ! ! ! F1 630mAT F4 4AT ! ! ! F5 2AT F3 3.15A F2 250/2A F1 800mA ! SWITCHED UNSWITCHED T901 AM-2450T-20(AAL) AM-2450T-30(CSA) ! ! T901 AM-2450T-70 ! F1 250/4A F3 250/2A SWITCHED UNSWITCHED ! C901 0.01/500(P) SW901 ! ! J903 ! AC 220V UK AC 240V CSA, AAL AC 120V U/T AC 110V to 240V AC OUTLET AC OUTLET R9 (FS) 470 R1 2.2k TR1 R4 470k R11 160k R9 160k R10 39k R12 39k R2 39k R1 4.7k VR2 250k(B) VR1 250k(MN) R1 68k R2 2.2k R3 220k R4 180k R6 68k R8 1.2k C5 2.2 C8 (LL) 1 IC1 LA3133 100p C3 0.001 C4 47 10 C11 100/35 C1 0.47 25(M) R8 300 R2 270k R10 6.8k R14 47k R6 5.6k R3 10k R5 100k R7 750 C4 47/10 C2 100p C3 100/35 C5 10p 500(D) C1 0.1 25(M) C6 4.7/25 C8 0.015 C7 47/10 C10 0.0033 R11 1.5k VR1 50k(C) C9 0.15 25 R12 100k R13 3.3k C11 0.027 R15 620 VR2 50k(C) TR2 TR1,2 2SC2240(GR,BL) R7 1k C2 (LL) 4.7/25 C1 22/10 R5 16k C7 0.0018(J) C9 0.0047(J) 0.047(Z) C1 220 p(K) C2 0.012 R3 22k R1 47k R7 47k VR1 1kB R8 3.3k R5 33k R9 3.3k R2 4.7k TR1 TR2 TR15 TR11 TR12 TR4 TR16 TR7 TR5 C3 330p C6 33p C2 100p C9 330p C8 100p C7 33 R3 3.6k C5 47/10 R11 100 R10 2.2k R14 (FS) 150 R13 (FS) 4.7 R17 5W 0.47(K) R20 2.7k R19 2.7k R21 15k R22 15k TR9 TR10 TR13 TR14 TR9 2SC2240(GR,BL) TR10 2SA1015(O,Y,GR) D1 1S2472 D3 1S2472 R26 47k R31 75k R27 220 D2 1S2472 C10 3.3 R32 5.6k R40 1W 220(K) R30 10k R28 22k R33 10k R37 8.2k R38 10k R23 (FS) 1/2W 10 R35 39k R36 22 R42 24k C20 0.047(Z) R41 18k C17 2.2/25 C16 220/10 D5 1S2472 R59 1/2W 2.2k TR13 2SC536(G,H) TR14 2SD571(K,L) TR1 2SA979(G,H) TR5 2SC2235(O,Y) TR7 2SD718(R,O) TR2 2SC2229(O,Y) TR3 2SA1015(O,Y,GR) TR6 2SA965(O,Y) TR8 2SB688(R,O) R12 (FS) 820 R24 (FS) 1/2W 10 C12 0.1(Z) C15 0.1(Z) C11 0.1(Z) C19 470/6.3 C14 0.1(Z) C13 0.047(Z) R39 10k R34 5.6k RL1 MS24D4 -0Z C18 470/6.3 C33 33/25(M) C33, C36 - non polar C36 33/25(M) R44 2W 220(K) 43 2W 220(K) R55 27K R54 27K R58 1/2W 1.5K R48 1/2W 3.3K R49 51K R53 4.7K R57 330 R51 R56 4.7k R46 1k R52 330 R45 (FS) 27 C34 0.0068 C22 100/63 C35 0.0068 VR3 500B VR2 500B C903 D13 1S2473 D6 RD36E(C) U/T, CSA, AAL D1 SY-405D IC1 TA7318P D14 1S2473 D8 GP08D D7 CEE, UK CEE, UK U/T, CSA, AAL D9-D12 GP30G C29-C32 0.01/500(P) C30 C29 L2 2.2 H(K) µ L2 2.2µH(K) L1 2.2 H(K) µ L1 2.2 H(K) µ R47(FS) 1/2W 10 R29(FS) 1/2W 10 C31 D10 D9 D11 D12 C32 C904 IND901 R4 4.3k R6 2.2k C4 0.0012 C10 D4 1S2472 TR11, 12, 15 2SC1815(O,Y,GR) R25 1k TR3 R18 5W 0.47(K) R15 (FS) 150 TR8 TR6 R16 (FS) 4.7 10000/52 10000/52 C23 220 63 C28 0.01 500(P) C24 0.01 500(P) C26 33 C27 100 63 2.2k GP08D C6 120V 32V AC 0V 0V 220V 110V 42.6V AC 32V AC 8.3V AC 0V 0V 0V 20.0 2.4 1.7 1.2 35.5 35.5 6.7 1.9 33.2 0.6 0 0.6 14.9 29.8 1.8 6.9 0.6 0 0.6 14.6 1.8 35.5 0.2 -45.0 -45.0 -41.0 -41.0 0.7 -0.5 -1.0 -1.0 -0.5 -44.5 -46.1 -44.3 -41.0 0.7 1.2 44.5 44.5 0.7 0.1 0 0 0 32.1 32.4 -1.9 8.7 31.8 8.1 8.8 -8.5 -0.5 36.8 35.5 35.5 35.5 44.4 0 0 32.4 -8.5 8.7 -0.5 0 0 -8.5 240V -44.3 0 -0.5 54.6 -46.1 -46.1 -57.8 -46.7 37.3 -44.5 44.5 44.4 -44.5 -44.3 -45.0 -41.0 -45.0 -41.0 12 11 10 9 8 7 6 5 4 3 2 1 OFF A+B A B STEREO MONO SELECTOR TUNER PHONO AUX TAPE MONITOR SOURCE TAPE2 DUB 2-1 DUB 1-2 TAPE1 SW902 SPEAKERS LOUDNESS MODE BALANCE VOLUME BASS TREBLE SW1-2a SW2 SW1 OFF ON SW1-2b SW1-1 OFF ON LEFT ME902 RIGHT ME901 LEVEL METER LEVEL METER IDLING CURRENT 33 32 34 43 41 46 45 44 IDLING CURRENT 30 31 29 40 39 38 37 36 35 MARK PARTS ARE LOCATED ON MAIN AMP. P.C. BOARD M3-4505B 42 AM-2450 SCHEMATIC DIAGRAM This is a custom vector drawing based on AKAI original schematic, made by my own. The size is ISO A2 (594x420 mm) but may be scaled to any size for printing and/or viewing. You may download to a local hard disk extracts and/or print this document for personal (non commercial) and educational use only. Commercial copying, hiring, lending of this document or any part of this document is prohibited. You may not distribute or commercially exploit the content. Nor may you transmit it or store it in any other website or other form of electronic retrieval system. In all cases this notice must remain intact. Copyright © 2017. by Mrki, AK member (www.audiokarma.org) ALL VERSIONS NOTE: Your use of this document is entirely at your own risk, for which I shall NOT BE LIABLE. Thus, that assumes or undertakes NO LIABILITY for any loss or damage suffered as a result of the use, misuse or reliance on the information and content on this document. All of the information provided in this document is provided "AS-IS" and with NO WARRANTIES. Published on http://akdatabase.com/AKview/ WARNING: DENOTATES SAFETY CRITICAL COMPONENTS. FOR CONTINUED SAFETY REPLACE SAFETY CRITICAL COMPONETS ONLY WITH MANUFACTURER’S RECOMMENDED PARTS. ! NOTE 1. UNLESS OTHERWISE SPECIFED ALL REISTORS IN OHMS 1/4W (J) ALL CAPACITORS IN uF 50WV (K) 2. (LL) = LOW LEAKAGE CAPACITORS 3. (FS) = FAIL SAFE RESISTORS 4. MARK INDICATE NON POLAR ELECTROLYTIC CAPACITORS NO. 2-2 1562041A 2SA1015 2SC536 2SC1815 2CS2240 E C B 2SA965 2SC2229 2SC2235 E C B E C B B C E B C E C B E C B 2SD571 2SD612K 2SA979 2SB688 2SD718 AM-2450 SCHEMATIC DIAGRAM AVERTISSEMENT: IL INDIQU LES COMPOSANTS CRITIQUES DE SURETE. POUR MAINTENIR LE DEGRE DE SECURITE DE L’APPAREIL NE REMPLACER LES COMPOSANTS DONT LE FONCTIONNEMENT EST CRITIQUE POUR SECURITE QUE PAR DES PIECES RECOMMANDEES PAR LE FABRICANT. ! L R TUNER AUX L R PHONO RIGHT TM901 LEFT RIGHT LEFT f e f f e e b a d c L R L R REC PLAY TAPE 1 L R L R REC PLAY TAPE 2 1 4 2 3 5 REC/PLAY DIN J5 SPEAKER B A TM902 PHONES POWER LEVEL METERS J901 J1 L R J2 J4 J3 d b c a d c b a
Transcript of AM-2450 SCHEMATIC DIAGRAMakdatabase.org/AKview/albums/userpics/10007/Akai AM... · tr7 2sd718(r,o)...
R50 10k
C2
5 4
7
C2
1 4
7
7654
8911 10
321
121314
6
9
541
872 3
MAIN VOL. B. BALANCE P.C. BOARD M3-4502A/B
TONE CONTROL P.C. BOARD M3-4503
MAIN AMP. P.C. BOARD M3-4504A
LED P.C. BOARDM3-4504C
TAPE P.C. BOARD M3-4501B
INPUT P.C. BOARD M3-4501A
19
12
20
22
21
15
16
18
17
11
25
13
78 9
4
5
3
628 2627
1
2
23
24
14
3
10
6
51
9
4
5
6
7
8
1
2
3
4
2
51
3
4
1
2
35
6
2
8
4
7
1
2
3
1
1 1 1
2
3
7
2 1 3
8
9
10
11
12
5
6
4
10
RED
RED
ORG
BRN
ORG
WHT
WHT
WHT
BLK
VLT
VLT BLU
REDORG
ORG
WHT
WHT
BLK
VLT
VLT YLW
REDORG
ORG
WHT
WHT
BLK
VLT
VLT WHT
BLU
GRN/YLW
BRN
J903
SW901
REDORG
ORG
WHT
WHT
BLK
VLT
VLT BLU
BLU
GRN/YLW
BRN
CEE
!
!
! C9014700p/250
!
!
C9024700p/250
C9010.01/125(P)
T901AM-2450T-40
F2 630mAT
F3 4AT
!
!
F1 630mAT
F4 4AT
!
!
!
SW901
SW901
J902
J902
!
!
!
!
!
!
! !
C9014700p/250
! C9024700p/250
T901AM-2450T-50
F2 630mAT F2 800mA
F3 4AT
!
! !
F1 630mAT
F4 4AT
!
!
!
F5 2AT F3 3.15A
F2 250/2A
F1 800mA! SW
ITC
HE
D
UN
SW
ITC
HE
D
T901AM-2450T-20(AAL)AM-2450T-30(CSA)
!
!
T901AM-2450T-70
!
F1 250/4A
F3 250/2A
SW
ITC
HE
D
UN
SW
ITC
HE
D
! C9010.01/500(P)
SW901 !
!
J903!
AC 220V
UK
AC 240V
CSA, AAL
AC 120V
U/T
AC 110V to 240V
AC OUTLET
AC OUTLET
R9 (FS) 470
R12.2k
TR1
R4 470k
R1
11
60
k
R9
16
0k
R1
0
39
k
R1
2 3
9k
R239k
R14.7k
VR2 250k(B)
VR1 250k(MN)
R168k R2 2.2k R3 220k
R4 180k R6
68
k
R8
1.2
k
C5 2.2
C8 (LL) 1
IC1 LA3133
10
0p
C3
0.0
01
C4
47
10
C1
11
00
/35
C1
0.4
72
5(M
)
R8
30
0
R2
27
0k
R1
0 6
.8k
R1
4 4
7k
R6
5.6
k
R3
10
k
R5
10
0k
R7
75
0
C4 47/10
C2
10
0pC3
100/35
C5 10p500(D)
C1 0.125(M)
C64.7/25
C80.015
C7
47
/10
C1
0 0
.00
33
R1
1 1
.5k
VR
1 5
0k(
C)
C90.1525
R12100k
R133.3k
C1
1 0
.02
7
R1
5 6
20
VR
2 5
0k(
C)
TR2
TR1,2 2SC2240(GR,BL)
R7
1k
C2 (LL)4.7/25
C1
22
/10 R5 16k
C70.0018(J)
C90.0047(J)
0.047(Z)
C1 220p(K)
C2 0.012
R322k
R1
47
k
R7 47k VR
1 1
kB
R83.3k
R533k R9 3.3k
R24.7k
TR1
TR2
TR15
TR11 TR12
TR4TR16
TR7
TR5
C3 330p
C6 33p
C2
10
0p
C9330p
C8 100p
C733
R33.6k
C547/10
R11 100
R1
0 2
.2k
R1
4 (
FS)
15
0
R13 (FS) 4.7
R17 5W0.47(K)
R20 2.7k
R19 2.7k R21 15k
R22 15k
TR9
TR10
TR13
TR14
TR9 2SC2240(GR,BL)TR10 2SA1015(O,Y,GR)
D1
1S2
47
2
D3
1S2
47
2
R26 47k
R3
1 7
5kR27
220
D2
1S2
47
2
C1
0 3
.3
R3
2 5
.6k
R4
0 1
W2
20
(K)
R3
0 1
0k
R2
8 2
2k
R3
3 1
0k
R3
7 8
.2k
R3810kR
23
(FS
)1
/2W
10
R3
5 3
9k
R3
6 2
2
R42 24k
C200.047(Z)
R4118kC
17
2.2
/25
C1
62
20
/10
D51S2472
R59 1/2W 2.2k
TR13 2SC536(G,H)TR14 2SD571(K,L)TR1 2SA979(G,H)
TR5 2SC2235(O,Y)TR7 2SD718(R,O)
TR2 2SC2229(O,Y)TR3 2SA1015(O,Y,GR)
TR6 2SA965(O,Y)TR8 2SB688(R,O)
R1
2(F
S) 8
20
R2
4 (
FS)
1/2
W 1
0
C1
20
.1(Z
)
C1
50
.1(Z
)
C1
10
.1(Z
)
C1
94
70
/6.3
C1
40
.1(Z
)
C1
30
.04
7(Z
)
R3910k
R34 5.6k
RL1MS24D4-0Z
C1
84
70
/6.3
C3333/25(M)
C33, C36 - non polar
C3633/25(M)
R442W220(K)
432W220(K)
R55 27K
R54 27K
R5
8 1
/2W
1.5
K
R4
8 1
/2W
3.3
K
R4
9 5
1K
R5
3 4
.7K R57 330
R51
R56 4.7k
R46 1k
R5
2 3
30
R45 (FS) 27
C3
4 0
.00
68
C2
2 1
00
/63
C3
5 0
.00
68
VR
3 5
00
B
VR
2 5
00
B
C903
D1
31
S24
73
D6
RD
36
E(C
)
U/T, CSA, AAL
D1
SY-4
05
D
IC1 TA7318P
D141S2473
D8GP08D
D7
CEE, UK
CEE, UK
U/T, CSA, AAL
D9-D12GP30G
C29-C320.01/500(P)C30 C29
L2 2.2 H(K)µ
L2 2.2µH(K)
L1 2.2 H(K)µ
L1 2.2 H(K)µ
R47(FS) 1/2W 10R29(FS) 1/2W 10
C31
D10 D9
D11D12
C32
C904
IND901
R4
4.3
k
R6
2
.2k
C40.0012
C10
D41S2472
TR11, 12, 152SC1815(O,Y,GR)
R25 1k
TR3
R18 5W0.47(K)
R1
5 (
FS)
15
0
TR8
TR6
R16 (FS) 4.7
10000/52 10000/52
C2
3 2
20
63
C280.01500(P)
C24 0.01500(P)
C2
6 3
3
C2
7 1
00
63
2.2k
GP08D
C6
120V
32V AC
0V
0V
220V
110V
42.6
V A
C
32V AC
8.3V AC
0V
0V
0V
20
.0
2.4
1.7
1.2
35.5
35.5
6.7
1.9
33.2
0.6 0
0.6
14
.9 29.8
1.8
6.9
0.6
0 0.6
14
.6
1.8
35.5
0.2
-45
.0
-45.0
-41
.0
-41
.0
0.7
-0.5
-1.0
-1.0
-0.5
-44.5
-46
.1-4
4.3
-41
.0
0.7
1.2
44.5
44.5
0.7
0.1
0
0
0
32.1
32
.4
-1.9
8.7
31.8
8.1
8.8
-8.5
-0.5
36.8
35.5
35.5
35.5
44.4
0
032.4
-8.5
8.7
-0.5
0 0-8.5
240V
-44.3
0
-0.5
54.6-46.1
-46.1
-57.8
-46.737.3
-44.5
44.544.4
-44.5-44.3
-45
.0
-41
.0
-45.0
-41
.0
12
1110
9
8
7
6
54
3
2
1
OFF
A+B
A
B
STEREO MONO
SELECTOR
TUNER PHONOAUX
TAPE MONITOR
SOURCE TAPE2 DUB 2-1DUB 1-2 TAPE1
SW902
SPEAKERS
LOUDNESS MODEBALANCE
VOLUMEB
ASS
TREB
LE
SW1-2a
SW2
SW1
OFF ON
SW1-2b
SW1-1
OFF ON
LEFT ME902
RIGHT ME901
LEV
ELM
ETER
LEVELMETER
IDLI
NG
CU
RR
ENT
33 32
34
43
41
46
45
44
IDLI
NG
CU
RR
ENT
30 31
29
40
39
38
37
36
35
MARK PARTS ARELOCATED ON MAINAMP. P.C. BOARDM3-4505B
42
AM-2450 SCHEMATIC DIAGRAMThis is a custom vector drawing based on AKAI original schematic, made by my own. The size is ISO A2 (594x420 mm) but may be scaled to any size for printing and/or viewing.You may download to a local hard disk extracts and/or print this document for personal (non commercial) and educational use only. Commercial copying, hiring, lending of this document or any part of this document is prohibited.You may not distribute or commercially exploit the content. Nor may you transmit it or store it in any other website or other form of electronic retrieval system. In all cases this notice must remain intact. Copyright © 2017. by Mrki, AK member (www.audiokarma.org)
ALL VERSIONS
NOTE: Your use of this document is entirely at your own risk, for which I shall NOT BE LIABLE. Thus, that assumes or undertakes NO LIABILITY for any loss or damage suffered as a result of the use, misuse or reliance on the information and content on this document. All of the information provided in this document is provided "AS-IS" and with NO WARRANTIES.
Published on http://akdatabase.com/AKview/
WARNING: DENOTATES SAFETY CRITICAL COMPONENTS. FOR CONTINUED SAFETY REPLACE SAFETY CRITICAL COMPONETS ONLY WITH MANUFACTURER’S RECOMMENDED PARTS.
! NOTE
1. UNLESS OTHERWISE SPECIFEDALL REISTORS IN OHMS 1/4W (J)ALL CAPACITORS IN uF 50WV (K)
2. (LL) = LOW LEAKAGE CAPACITORS3. (FS) = FAIL SAFE RESISTORS4. MARK INDICATE NON POLAR
ELECTROLYTIC CAPACITORS
NO. 2-2 1562041A
2SA10152SC5362SC18152CS2240
E C B
2SA9652SC22292SC2235
E C B E C B B C E
B C E C B
E C B
2SD571 2SD612K 2SA979 2SB6882SD718
AM-2450SCHEMATIC DIAGRAM
AVERTISSEMENT: IL INDIQU LES COMPOSANTS CRITIQUES DE SURETE. POURMAINTENIR LE DEGRE DE SECURITE DE L’APPAREIL NE REMPLACER LES COMPOSANTS DONT LE FONCTIONNEMENT EST CRITIQUE POUR SECURITE QUE PAR DES PIECES RECOMMANDEES PAR LE FABRICANT.
!
L
R
TUNER
AUX
L
R
PHONORIGHT
TM901
LEFT
RIGHT
LEFT
fe
f
f
e
e
ba
dc
L
R
L
R
REC
PLAY
TAPE 1
L
R
L
R
REC
PLAY
TAPE 2
1 42
3 5
REC/PLAY
DIN
J5
SPEAKER
B A
TM902
PHONES
POWER LEVEL METERS
J901
J1
L
R
J2
J4
J3
d
b
c
a
dc
ba
