Akai AM-2200 User manual

SECTION 1
SERVICE MANUAL
TABLE OF CONTENTS
I. TECHNICAL DATA 2
II. DISMANTLING OF UNIT 3
III. CONTROLS 4
IV. PRINCIPAL PARTS LOCATION 4
V. LEVEL DIAGRAM 5
VI. MAIN AMP ADJUSTMENT .......................... 5
VII. CLASSIFICATION OF VARIOUS P.C BOARDS.................................... 6
1. RELATION OF P.C BOARD TITLE AND IDENTIFICATION NUMBER 6
2. COMPOSITION OF VARIOUS P.C BOARD . 7
For basic adjustments measuring methods, and operating principles, refer to GENERAL OPERATING
PRINCIPLES AND ADJUSTMENTS.

I. TECHNICAL DATA
1. Power Amplifier Section
Continuous Power Output
POWERBANDWIDTH(1HF)
SIGNAL TO NOISE RATIO (1HF)
RESIDUAL NOISE
CHANNEL SEPARATION (1HF)
DAMPINGFACTOR
OUTPUT
20 watts per channel, minimum RMS, at 8 ohms from 20 to 20,000 Hz with no
more than 0.5% total harmonic distortion
10 to 45,000 Hz/8 ohms (Total Harmonic Distortion 0.5%)
Phono: Better than 85 dB
Aux: Better than 95 dB
Less than 0.8 mV at 8 ohms
Phono: Better than 55 dB at 1,000 Hz
More than 60 (1 kHz, 8 ohms)
Speakers: A,B (4 to 16 ohms)/A+B(8 to 16 ohms)
Headphone: 4 to 16 ohms
2. Pre Amplifier Section
INPUTSENSITIVITYANDIMPEDANCE
OUTPUT LEVELAND IMPEDANCE
FREQUENCY RESPONSE
TONE CONTROL
LOUDNESS CONTROL
Phono: 3 mV/47 k ohms
AUX: 150 mV/100 k ohms
Tuner: 150 mV/100 k ohms
Tape Monitor: PIN; 150 mV/100 k ohms DIN; 150 mV/100 k ohms
TapeREC: PIN; 150 mV/100 k ohms DIN; 150 mV/100 k ohms
Phono (RIAA equalization) 30 to 15,000 Hz +-1 dB
BASS: ±9 dB at 100 Hz, TREBLE: ±7 dB at 10 kHz
+10 dB at 100 Hz, +5 dB at 10 kHz
(Volume Control set at -30 dB position)
FILTER HIGH: -6 dB at 10 kHz, LOW: -6 dB at 50 Hz
3. Others
SEMICONDUCTORS
Transistors: 18, Diodes: 5, IC: 1
POWER REQUIREMENTS U.S.A. and Canada model: 120V, 60 Hz
CEE models: 220V, 50 Hz
Other models: 110/220/240V, 50/60 Hz switchable
DIMENSIONS
380(W) x 125(H) x 263(D) mm
(15x4.9x 10.3) inches
WEIGHT
5.5 kg (12.1 IDS.)
NOTE: For improvement purposes, specifications and design are subject to change without notice.

II.DISMANTLINGOFUNIT
Incaseoftrouble,etc.necessitatingdisassembly,pleasedisassembleintheordershowninphotograph.Reassemblein
reverseorder.
1
SCREWS
SCREWS
CABINET
SCREWS
SCREWS
ADJUSTMENT
t
A
c
L)
SCREWS
6
5
2
7
BOTTOM
PLATE
3
4
FRONTPANEL

micro
VII. CLASSIFICATION OF VARIOUS P. C BOARDS
1. RELATION OF P.C BOARD TITLE AND IDENTIFICATION NUMBER
P.C Board Number of P.C Board
Main Amp P.C Board
MFC P.C Board
LED P.C Board
VR P.C Board
Headphone P.C Board
M2-5018/A
M2-5019
M2-5019A
M2-5019B
M2-5019C
Tone Control P.C Board M2-5022

2.COMPOSITIONOFVARIOUSP.CBOARD
1)MAINAMPP.CBOARDM2-5018/A,LEDP.CBOARDM2-5019A

3)VRP.CBOARDM2-5019B
WHT/CROSSBLK
M2-50.9
M2-5022
4)HEADPHONEP.CBOARDM2-5019C
ISPBl
5)TONECONTROLP.CBOARDM2-5022
WHT/LONGBLU
BALANCE LOUDNESS VOLUME

2)MFCP.CBOARDM2-5019
[TAPEMONITOR]

R O M
SECTION 2
TABLE OF CONTENTS
1. RECOMENDED SPARE PARTS LIST .............. ...17
2. MAIN AMP P.C BOARD (M2-5018) BLOCK........... 18
3. MFC P.C BOARD (M2-5019) BLOCK ...... ................ 18
4. VOL P.C BOARD (M2-5019B) BLOCK................ .18
5. HEADPHONE P.C BOARD (M2-5019C) BLOCK.....................................18
6. TONE CONTROL P.C BOARD (M2-5022) BLOCK ..................18
7. ASSEMBLY BLOC...........................................................................................19
8. FINAL ASSEMBLY BLOCK.. ...................... 21
9. LIST OF JNTERCHANGEABLE SEMICONDUCTORS ................ 22
INDEX .................................................................................... 23
Resistor and Capacitor which is not listed in this parts list, please refer to
COMMON LIST FOR SERVICE PARTS.
PARTS LIST

R O M
HOW TO USE THIS PARTS LIST
1. This parts list is compiled by various individual blocks based on assembly process.
2. When ordering parts, please describe parts number, serial number, and model number in detail.
3. How to read list.
The reference number corresponds with illustration or photo number of that particular
parts list. Thisnumber corresponds with the Figure Number.
This number corresponds with the individual parts index number
in that figure.
A small "x indicates the inability to show that particular part
in the Photo or Illustration.
Schematic Diagram Number of individual
manufacturedpart.
(not required for parts order)
Quantity of particular part required.
12-115x
Ref. No. Parts No. Description Schematic No Q'ty
FLYWHEEL BLOCK #13
12-ll5x 800425 Flywheel Block Assy. Comp. RDG#13
12-116 244506 Flywheel Only RD 233
12-117x 244754 Felt, Flywheel RD275
12-118 251324 Main Metal Case RD 236
12-119 253080 Main Metal RD237
4. The symbol numbers shown on the P.C. Board list can be matched with the Composite Views
of components of the Schematic Diagram or Service Manual.
5. The indications of Resistors and Capacitors in the photos of P.C. Board are being eliminated.
6. The shape of the parts and parts name, etc. can be confirmed by comparing them with the parts
shown on the Electrical Parts Table of P.C. Board.
7. Both the kind of part and installation position can be determined by the Parts Number. To
determine where a parts number is listed, utilize Parts Index at end of Parts List.
It is necessary first of all to find the Parts Number. This can be accomplished by using the
Reference Number listed at right of parts number in the Parts Index, (meaning of ref. no.
outlined in Item 3 above).
8. Utilize separate "Price List for Parts" to determine unit price. The most simple method of
finding parts Price is to utilize the reference number.
CAUTION:
1. When placing an order for parts, be sure to list the parts no. model no., and description. Ther
e
are instances in which if any of this information is omitted, parts cannot be shipped or th
e
wrong parts will be delivered.
2. Please be careful not to make a mistake in the parts no. If the parts no. is in error, a part dif
-
ferent from the one ordered may be delivered.

R O M
1. RECOMMENDED SPARE PARTS LIST
Parts No.
BA211263
BA211252
BA211274
BA211285
BA211432
BC224807
BD211230
BT225178
Parts Nomenclature
Multi Function P.C Board Comp. M25019
Main Amp P.C Board Comp. M25018
Volume P.C Board Comp. M25019B
Headphone P.C Board Comp. M25019C
Tone Control P.C Board Comp. M25022
Cabinet A M25013
Front Panel Block Comp. AM2200(U)
Power Transformer AM2200T1
BT2 15043 Power Transformer AM2200T2
BT215054 Power Transformer AM2200T3
BT239591
ED656357
Reference No.
CSA
CEE
Power Transformer AM2200T4 BEAB
Luminous Diode SEL105R
ED551733 Silicon Varistor STV4H
ED656278
ED219903
EI697871
Silicon Diode 1S2472VE
Silicon Diode GP15D
IC LA3122
EJ650272 Pin Jack 14P JPJ37911
EJ698051 Din Jack
Jl (Multi Function P.C Board)
J2 (Multi Function P.C Board)
EJ225022
EJ240581
E0650823
ES225055
Headphone Jack LJ255112 Jl (Headphone P.C Board)
Push Terminal 4P
Phase Equalizer Coil 2.2µH
Rotary Switch SR26N C30K
ES225088 Push Switch 2F0005FF3220
ES224965 Push Switch 1FT0004AF4920
ES225044 Push Switch 2F0002FF1620
ES219846 Push Switch 3FT0001FF6820
ES224436 Power Switch JP01
ES239218
ES242346
ET219870
Power Switch JP01 (TV4)
Power Switch JP 17
Transsistor 2SD586 (Q)(R)
L1 (Main Amp P.C Board)
SW1 (Multi Function P.C Board)
SW2 (Multi Function P.C Board)
SW1 (Volume P.C Board)
SW1 (Headphone P.C Board)
SW1 (Power Switch)
CSA
CEE
ET2 19881 Transistor 2SB616 (Q)(R)
ET223446 Transistor 2SC1571NP (G)(H)
ET219868
ET219857
ET539987
Transistor 2SB560 (E)(F)
Transistor 2SD438 (E)(F)
Transistor 2SC1312R (F)(G)
EV573366 Semifixed Volume V10K842 200 ohmsB
EV224943
EV224954
EV219835
SK224886
SK646817
SK634410
SK225090
SP224662
SZ645243
Single axial 2throw Volume V24L5G 3BM 250kx2
Single axial 2throw Volume V16L4G 31Z 250kx2
Single axial 2throw Volume V16L4 I5A 100kx2
Power Knob M25021
Single Knob AA5250
Push Button Knob J 915051
Volume Knob M25015
Rear PanelA M25010
Circular Foot A CA6014
VR1 (Main Amp P.C Board)
VR1 (Volume P.C Board)
VR2 (Volume P.C Board)
VR1 ,2 (Tone Control P.C Board)

R O M
2. MAIN AMP P.C BOARD(M25018) BLOCK
Symbol Parts No.
No.
21 BA211252
22 BA270764
23 BA27077S
2TR1.2 ET245790
2TR3 ET219868
2TR4 ET219857
2TRS ET219868
2TR6 ET219857
2TR7 ET219868
2D1 ED656278
2D2 to 5 ED219903
2VR1 EV245823
2L1 E0650823
24 EA233932
25 EA233943
26 EJ514822
27 EJ592503
2R18.19 ER219914
2C10 EC557155
2C13 EC474671
Description Q'ty
Main Amp P.C Board Comp.
(M25018) 1
Main Amp P.C Board Comp.
(M2S018XCEE) 1
Main Amp P.C Board Comp.
(MSS018)(CSA) 1
Transistor 2SC1570NP (G)(H) 4
Transistor 2SB560 (E)(F) 2
Transistor 2SD438 (E)(F) 1
Transistor 2SB560 (E)(F) 1
Transistor 2SD438 (E)(F) 2
Transistor 2SB560 (E)(F) 2
Silicon Diode 1S2472 1
Silicon Diode GP15D 4
Semifixed/Vol. V10K812
200 ohmsB 2
Phase Equalizer Coil 2.2 µH(K) 2
Transistor P.C Board (M25018A) 1
Transistor P.C Board A
(M25018A)(CSA) 1
Fuse Holder, P.C Board SN5051 8
Fuse Clip, P.C Board H0426
(CEE) 8
Metal Oxide Film/R. 2W
0.47 ohms (K) 4
Solid Aluminum/C. 1µF(M)
10WV(Vert. Type) 2
FM/C. 10PF(K) 500WV 2
3. MFC P.C BOARD (M25019) BLOCK
Symbol
No. Parts No.
31 BA211263
3IC1 E1697871
3SW2 ES225088
3J1 EJ650272
3J2 EJ698051
Description Q'ty
Multi Function P.C Board Comp.
(M25019) 1
1C LA3122 1
Push SW. 2F0005FF3220 1
Pin Jack 14P JPJ37911 1
Din Jack 1
4. VOL P.C BOARD (M25019B) BLOCK
Symbol
Parts No.
No.
41 BA211274
4TR1 ETS39987
4VR1 EV224943
4VR2 EV224954
4SW1 ES224965
4C4 EC5S7155
4C7 EC223413
Description Q'ty
Vol P.C Board Comp. (M2S019B) 1
Transistor 2SC1312R(F)(G) 2
Single axial 2 throw Vol.
V24L5G 3BM 250kx2 1
Single axial 2 throw Vol.
V16L4G 31Z 250kx2 1
Push SW. 1FT0004AF4920 1
Solid Aluminum/C. 1µF(M) 10WV
(Vert. Type) 2
Solid Aluminum/C. 1µF(M) 16WV
(Vert. Type) 2
5. HEADPHONE P.C BOARD(M25019C)
BLOCK
Symbol
No.
51
Parts No. Description
Q'ty
BA21128S Headphone P.C Board Comp.
(M2S019C) 1
SJ1 EJ225022 Headphone Jack 1
SSW1 ES22S044 Push SW. 2F0002FF1620 1
5R1.2 ER409814 Metal Oxide Film/R. 2W
220 ohms (K) 2
6. TONE CONTROL P.C BOARD (M25022)
BLOCK
Symbol
No.
61
Parts No.
Description
Q'ty
BA211432 Tone Control P.C Board Comp.
(M25022) 1
6VR1.2 EV219835 Single axial 2 throw Vol. V16L4
20A 100kx2 2
6SWl ES219846 Push SW. 3FT0001FF6820 1
6C4 EC219813 Solid Aluminum/C. 0.1 µF(M)
10WV (Vert. Type) 2

R O M
7.) ASSEMBLY BLOCK
Ref.
No.
71
72x
73x
74x
7Sx
76x
77x
Parts No.
HEATSINK
BZ211241
ET219870
ET219881
ZS379350
ED551733
ZS608332
ZS447840
Description Schematic Q'ty:
No.
BLOCK
Heatsink Block Comp.
Transistor 2SD586 (Q)(R)
Transistor 2SB616 (Q)(R)
Screw, pan head 3x6
Varistor STV4H
Screw, pan head 3x8,
w/washer
Tapping Screw #2 3x8(BR)
451236
451237
451010
1
2
2
8
2
2
4
REAR PANEL BLOCK
78
79x
710x
711
712
71 3x
714
715
716
717
718
719
720x
72lx
722
72 3x
724x
725 x
726x
727
728x
729
730x
731
732
733x
734x
735x
736x
737x
738
739
740
741
x
742 x
743x
744x
745 x
746x
747x
748x
749 X
75Ox
75lx
752 X
753x
754x
EZ224662
EZ224706
EZ224717
EZ225145
EW540123
EW604S85
EZ631945
SK652397
ZW652408
EJ240581
ZS52286S
ASSEMBLY
ZS32S495
ZS379350
ZW273802
ES224436
ES242346
ES239218
EC684720
ECS65896
ZW698308
ZW239578
ZS447761
EJ214975
ES225055
BT225178
BT215054
BT2 15043
ZW273914
ZW413188
EJ551035
EA224515
ED656357
SP224831
ZS447840
EF277413
EF607550
EF332098
EF690996
EF552846
EF623103
EF563703
TA239567
EJ239580
EJ239477
ZW273881
ZW273892
ZW413188
Rear Panel A
Rear Panel B (CSA)
Rear Panel C (CEE)
2 throw AC Outlet
AC Cord (CUL) 2.5M
AC Cord BSI
Strain Relief SR4N4
KnobOS122
Washer (SPC) D3.2xlOxO.5t
4P Push Terminal
Tapping Screw #2 3xl2(BR)
BLOCK
Tapping Screw #2 3x6 (BR)
Screw, pan head 3x6
Toothed Lock Washer M3
Push SW, JP01
Push SW. JP17 (CEE)
Push SW. JP01(TV4) (CSA)
Ceramic/C. CLD16YE
0.01µF(P) 500WV
Ceramic/C. DP6600YM
0.01µF(P) 1.4 kWV (CSA)
Nylon Rivet (FNPR) 3x5.5
(Black)
Nylon Rivet (FNPR) 4x5
(Black) (CEE, CSA)
Tapping Screw #2 3x6 (BR)
(Black)
3P Fuse Holder (Large) B
(Lupping Type)
Rotary SW. SR26N C30K
Power Trans. AM2200T1
Power Trans. AM2200T3
(CEE)
Power Trans. AM2200T2
(CSA)
Spring Washer M4
Nut M4, #1
Wrapping Terminal, 4P TS251
LED P.C Board
LED SEL105R
Bottom Plate A
Tapping Screw #2 3x8 (BR)
Fuse ST2 2A
Fuse (SEMKO T Type)
1.2SAT 250V (CEE)
Fuse ST1 2A (CSA)
Fuse (SEMKO T Type) 4AT
(CEE)
Fuse ST1 4A (CSA)
Fuse (SEMKO T Type) 1AT
(CEE)
Fuse 2A250V
Wire Band Plate (CEE.CSA)
Fuse Holder, w/sticker
AM2S (CEE)
Fuse Holder, w/sticker
AM2L(CSA)
Earth Lug M4 (CEE)
Toothed Lock Washer M4
(CEE)
Nut M4 #l(CEE)
M25010
M25010
M25010
311166
26320
26337
2749
3414
32172
255221
255224
255222
24561
24558
2754
2758
401104
25695
384433
384447
384446
32136
M25019A
451511
M25014
39126
39153
39125
39153
39125
39153
39150
M25024
401141
401119
1
1
1
1
1
1
1
1
1
2
4
9
11
1
1
1
1
1
1
4
1
1
1
1
1
1
1
4
4
2
1
1
1
5
4
1
1
2
2
4
1
1
1
1
1
1
'
Symbol
No Parts No. Description
7S6x MZ229138 Wire Bundle Holder N108
(CEE, CSA) 2351 2
7S7x ZS447840 Tapping Screw #2 3x8 (BR)
(CEE, CSA) 1
Schemat
i
Whenorderingparts,pleasedescribeParts Number, Descriptor,andModel Number in detail

8.PHOTOOFFINALASSEMBLYBLOCK
8.)FINAL ASSEMBLYBLOCK
Ref.
No.
PartsNo.Description
FRONTPANELBLOCK
8-lxBD211230FrontPanelBlockComp.
8-2MZ224627PushButtonBushA
8-3SE613888ButtonEscutcheonA
SchematicQ'ty
No.
M2-50041
CW-60218
ASSEMBLYBLOCK
8-4xSZ64S243Circular Foot A CA-6014 4
8-5xZS214997TappingScrew,#24x6pan4
8-6 BC224807Cabinet A M2-5013 1
8-7xBC266782Cabinet C (CSA) M2-50I3 1
8-8 ZW548010 Spot FacingWasher MU-6028 4
8-9ZS510344Screw,bindinghead4x124
8-10SK224886Power Knob M2-5021 1
8-11SK634410PushButtonKnob J 91-5051 8
8-12SK22S090Vol.Knob M2-5015 1
8-13 SK646817 SingleKnob AA-5250 4

R O M
9. LIST OF INTERCHANGEABLE SEMICONDUCTORS
As far as service is concerned, in case the original parts cannot be obtained, the interchangeable parts listed below can
be substituted.
Original Parts
Description
2SB560(E)(F)
2SB616(Q)(R)
2SC1312(F)(G)
2SC1517NP(G)(H)
2SD438(E)(F)
2SD586(Q)(R)
LA3122
1S2472VE
GP15D
SEL105R
STV-4H
Parts No.
ET2 19868
ET2 19881
ET539987
ET223446
ET219857
ET2 19870
EI697871
ED656278
ED2 19903
ED656357
ED551733
Utilizing P.C Board
M2-5018
M2-8018A
M2-5019B
M2-5018
M2-5018
M2-5018A
M2-5019
M2-5018
M2-5018
M2-5019A
Interchangeable Parts
Description
2SA815(O)(Y)
2SC1571NP(G)(H)
2SC1312(F)(G)
2SC1625(O)(Y)
ParteNo.
ET649078
j
ET223446
ET539987
ET649067
1S2472 ED656278
1R5BZ61 ED650621

R O M
INDEX
Ref. No. &
Parts No.
Symbol No.
BA211252 2-1
BA211263 3-1
BA211274 4-1
BA211285 5-1
BA211432 6-1
BA270764 2-2
BA27077S 2-3
BC224807 8-6
BC266782 8-7x
BD211230 8-lx
BT215043 7-34x
BT21S054 7-33x
BT225178 7-32
BZ211241 7-1
EA224515 7-38
EA233932 2-4
EA233943 2-5
Ref. No. &
Parts No.
Symbol No.
SK224886 8-10
SK225090 8-12
SK634410 8-11
SK646817 8-13
SK652397 7-15
SP224831 7-40
SZ645243 8-4x
TA239567 7-49x
ZS214997 8-5x
ZS32549S 7-19
ZS379350 7-4x
ZS379350 7-20x
ZS417150 7-S5x
ZS447761 7-29
ZS447840 7-7x
ZS447840 7-41x
ZS447840 7-57x
EC219813 6-C4 ZS510344 8-9
Parts No. Ref. No
EC223413 4-C7 ZS522865 7-18
EC474671 2-C13
EC557155 2-C10
EC557155 4-C4
ZS608332 7-6x
ZW239578 7-28x
ZW273802 7-21x
EC565896 7-26x ZW273881 7-52x
EC684720 7-25x ZW273892 7-53x
ED219903 2-D2to5
ED551733 7-5x
ED656278 2-D1
ED656357 7-39
EF277413 7-42x
EF332098 7-44x
EF552846 7-46x
EF563703 7-48x
EF602550 7-43x
EF623103 7-47x
EF690996 7-45x
EI697871 3-IC1
EJ214975 7-30x
EJ225022 5J1
EJ239477 7-5lx
EJ239580 7-SOx
EJ240581 7-17
EJ5 14822 2-6
EJ551035 7-37x
EJ592503 2-7
EJ650272 3-J1
EJ698051 3-J2
EO650823 2-L1
ER219914 2-R18.19
ER409814 5-R1.2
ES219846 6-SW1
ES224436 7-22
ES224965 4-SW1
ES225044 5-SW1
ES225055 7-31
ES225088 3-SW2
ES239218 7-24x
ES242346 7-23x
ET219857 2-TR4
ET219857 2-TR6
ET219868 2-TR3
ET219868 2-TR5
ET2 19868 2-TR7
ET219870 7-2x
ET2 19881 7-3x
ET24S790 2-TR1.2
ET539987 4-TR1
EV219835 6-VR1.2
EV224943 4-VR1
EV224954 4-VR2
EV245823 2-VR1
EW540123 7-12
EW604S85 7-13x
EZ224662 7-8
EZ224706 7-9x
EZ224717 7-10x
EZ225145 7-11
EZ631945 7-14
MZ224627 8-2
MZ229138 7-56x
SE613888 8-3
ZW273914 7-35x
ZW413188 7-36x
ZW413188 7-54x
ZW548010 8-8
ZW652408 7-16
ZW698308 7-27
Ref. No. &
Parts No.
Symbol No.
Ref. No.&
Symbo
l N