Akai GX-635D Service Manual

8.
P.C BOARDS
(1)
SYS.
CON
P.C BOARD
(TH-101s)
BLOCK
SY-mh'l
Parts
No.
N
()-
(r
),r
84308262
(t)-2
8A.108263
(l
),3
84308264
(l
)-ICr
F.I308e36
(
I
)-lct2,3
E143o66l
(l
)-rcr4
Ijr633e60
(1
)-tcs
EIs7384o
(l
)-TR
r
[.T3t2497
(r
)-TR2
ET63e43'l
(l
)-TR3
FlT3o7349
(l)-TR4to8 ÉT639437
(l
)-TR9.l
0
ET
5s46s7
(l)-TRl
I
ET63e43?
(r)-TRr
2
ETss46s'7
(l)-TRl3
ET308947
(l)-TRl4,f
s
ET63943'7
(l
)-TRl6to19
ET308937
(r
)-TR20
!Ts22268
(1)-TR2l FrT399846
(
I
).TR2
2
FlT3O8
937
(l
)-TR23
ET63e437
(l
)-TR24,2s
ET308937
(
I
)-ï
R26to32
ET
639
43'1
(1
)"D
l
(l
)-D2
EI)308945
8D313623
Schematic
No.
45 8 301
45838
45 8 140
45 8
106
15196
15185
45
I 334
45185
45 | 124
45185
45 | t21
15 1 333
45185
15 I 317
45 |
t24
45185
15 I 3r7
45185
15 I 317
45185
452E2
15680
45282
15680
45667
15667
15323
15282
45347
45346
453 4?
45328
45323
45347
45328
45323
45328
4s323
45328
45346
15323
15347
45328
15347
15323
45316
15323
15317
15316
45347
15323
15278
(
r
)-D3
FlD30894s
(l
)-D4
Et)309O6e
(
I
)-Ds
EI)30895
l
(
1
)-D6
h.Ds I
o't1 2
(t
)-D7,8
l-rDs6091
3
(l
)-De
ED308e4l
(r
)-Dl
0,1
r
FlD3089s2
(r
)-Dl2,l3
ED3O8e53
(r)-Dr4
ED3O89s2
(t
)-Dl
s
E.l)624903
(l
)-Dl6
L,Ds60913
(l)-Dt
7
ED308952
(l)-Dl8 El)624903
(l)-l)l
91022
El)s6oel
3
(l
)-D24
E.r)624903
(l)-l)26 l.ll)s60913
(t)-D27
b:l)624993
(l
)-l)28
1,.D3089s3
(1)-D2eto32
EDs609l3
(l
),D33.,14
El)3089s2
(l)-D3s
t.l)624903
(t
)-D36to38
ED3089s2
(1)-D39,40
FlDs609r
3
(r)-D4t,42 ED3089s3
(t
)-D43
FlDs609l
3
(l)-t)44 EI)308952
(l)-l)4s ED308es3
(t
)-D46
El)308es2
(l
).I)47.48
EDs609l
3
(r
)-D49
ED306
r o9
Description
Sys.
('()n
P.C
Board
CoÍnp.
(iX-6-15
I)
(U
/T)
(JPN)
Sys.
(bn
P.(l
Board
Cbnrp.
(iX-ó351)
((lSA)
(AA L)
Sys.
Con
l'.(l
Roard
Cornp.
(iX
-63
5
I)
(ClIil'l)
(UK)
IC
M544
IOP
IC M5 32OOP
IC M5 3202P
tc M5 3204P
Transistor 2SC I O6 I
(B)(C)
YC-408
Transistor
2SCl94
5
L(Q)(P)
Transistor 2SD7 94(PXQ)
Transistor 2SC94 5
L(Q)(P)
Transistor 2SA7 3 3(PXQ)
'Iransistor
2SCl94 5
L(Q)(P)
Transistor
2SA7
3
3(PXQ)
Transistor 2SC2 336
B(Q)(R)
Transistor
2SC94
5L(Q)(P)
Transistor
2SCl2 I 30(G)(H)
Transistor 2SA733(Q)
Transist()r
2SC94 5
L(Q)
Transistor 2S(12 | 3O((l)(H)
Transistor 2SC94
5 L(Q)(P)
Transistor 2SCl2
I
30(G)(H)
'l'ransistor
2S('94
5 L(Q)(P)
Silicon
I)iode SV B I 0-
l
O0
Zener I)iode HZ22-3
Silicon
I)iode SV
B
I 0-
l
0o
Zener l)iode HZ6B-2
Zener l)iode WZ-l20
Zener Diode
WZ-l20
Silicon
l)iode
I
52473
VIt
Silicon
Diode SVBI
0-2o0
Germanium l)iode
(Stop.
Type) lK34A-LR
(]ermanium
l)iode
(Home. Type)
I
K34A-LH
Germanium Diode
(Stop.
Type) | K34A-LI{
Silicon
Di()dc 1S24?l
Silicon
Diode I
52473
VE
Germanium
I)iode
(Stop.
Type) I
K34A-l-R
Silicon
l)iode I S2473
Silicon
l)iode lS24?3
VB
Silicon
l)iode I S2473
Silicon
Diode I
S2473
VFI
Silicon
Diode I
52
47 3
Germanium I)iode
(Home.
Type) I K34A-LH
Silicon
l)iode I 52473
VFI
(iermanium
l)iode
(Stop.
lype) IK34A-LR
Silicon
Diode I
S2473
Germanium
I)iode
(Stop.
Type)
lK34A-LR
Silicon
l)iode I 52473
VE
Germanium Diode
(Home.
Type) I
K34A-LH
Silicon
Diode I 52473
VE
()ermanium
Diode
(Stop.
Type) I K34A-LR
Germanium l)iode
(Home.
Type) I K34A-LH
Germanium Diode
(Stop.
Type)
lK34A-LR
Silicon
Diode lS24?3
VIi
Silicon
t)iocle W0lB
58
When ordering
parts,
Please
describe
Parts Number, Description,
and Model Number
in detail.
Symol
No.
(l
)-Dso
(r)-Dsl,s2
(
I
)-r)s
3
(l).Ds4
(
l
)-r)s
s
(
|
).r)s
6
(
l
)-I)s
7
(l)-RLlto4
(l
)-RLs
(
r
)-RL6
(l)-swl
(l
)-vRl
(l
)-vR2
(l)-CRlto14
(l)-Rr
ro
(l).Rl
I
I
(l)-Rl
l2
(l
)-cr
(
I
)-c4
(1)-cs
(l
)-c7
(1)-cle
(r)-c20
(l
)-C3sto37
(l
)-c3e,4o
(l
)-u44,4s
(r
)-c4
6,4'7
(l)-c48
(
r
)-c4e
(r)-cs2
(
I
).crs
3
(l)-cr1g11e
126
(l)-4
(l)-s
Parts
No.
IlD30894 I
ED224550
El)56091
3
I..D2245s0
EI)s6091 3
Flt)2
24
55
0
I.l D5
60 9l
3
EP30906
I
FlP30
8949
EP2ao'l 43
F.S30 9094
F.V3027r
8
EV3090? l
ER
300 82 0
ER309092
ER
30 895
6
FlR30
89 5 5
8C295997
Flc4
50 27 0
EC459r45
Í-.c2204tO
EC3
l o 3?o
I1C3 I
0368
Frc304708
EC304
I 8
6
EC308940
I,rc30
895
0
IrC
3O8 943
EC3
l 3
s77
I-tc3to366
I1C
3 1O
374
EC3
l o 372
zs42r
806
zw2'73't56
l)escription
Schenatic
Sif
icon
l)iode SVBI0-20O
45 2 82
Silicon
Diode l0D4
45 216
Sif
icon
l)iode I S247 3
VE
.
45
3 23
Silicon
I)iode I
oI)4
45 2 16
Silicon
Diode I 52473
VI'l
45 3 23
Silicon
Diode I oD4
15 216
Sif
icon
l)iode I 52473
VE
45 3
23
Relay
!'RL-264
47 137
Relay BR2l I
47 2 3l
Relay BR I I I CDO24D
4?
l-31
Sf ide
sw. sLt3-6-6.2-2-B
25 3 159
Semi-fixed
/Vol.
vl 8K3-6
(4US)
sO kB 36 9
26
Semi-fixed/Vol.
vr
8K3-6
(4US)
20 kB
36'9 26
Spark
Quencher
CRU-l
l2
0.1p+t
20 ohms
I 25WV
(u/T, JPN,
CSA,
AAL)
11 163
Metal Oxide
Film/R.2W
820
ohms(K)
35 l5 8
Cement/R.
(Home.
Type)
2oW 22O
ohms(K)
35'16 8l
Cement/R.
(Home.
Type)
20W
36
ohms(K)
35
16
81
Iilect./C.
(Vert.
Type)
22OOpIr 3sWV
24 129
Elect./C.
(Vert.
Type)
I 000p
I"
2 5WV
24 12 I
Elect./C.
(Vert.
Type)
22OOIjF
16WV
24129
Elect./C.
(Vert.
Type)
l00opF
I oWV
21
12
9
Metalized
Film/C.
(Vert. Type)
lSpF(K)
I 80WV
21 16 12
Metalized
Irilm/C.
(Vert. Type)
3.spF
(K)
l8owv
24 t6"t3
Tantalum/C.
(D
Type)
a?pF(M)
6.3wV 24
r5 12
NP/C.
(Vert.
Type)
r opI.'(M)
l6WV
24 17 26
NP/C.
(Home.
Type)
o.47pl.'(M)
5OWV
2417 3r
Tantalum/C. l0pl"(M)
6.3WV
24 15 12
Elect./C. 470pF I6OWV
24 12
32
Fllect./C.
(Vert.
Type)
I O0pl.
l00wv
24 12 46
Metalized
I.ilm/C.
(Vert.
Type)
o.47pF
(M)
I soWV
24 16'11
Tantalum/C.
(l)
Type)
r
OopI.-(M)
3.1
sWV
24 r5
12
Metalized
Film/C.
(Vert.
Type) o.lpl'(M)
200wv
(cDE,
uK)
24 16 14
Screw,
pan
head 3x8
Nut M3,
#l

Akai GX-635D Specifications

General

Track system	4-track, 2-channel stereo
Total Harmonic Distortion	0.8%
Outputs	0.775V (line)
Type	Reel to Reel
Heads	3 heads
Motor	2 x reel, 1 x capstan
Reel size	up to 10.5 inch reel
Wow and flutter	0.06% (7 1⁄2 ips)
Frequency response	30Hz to 26kHz (7 1/2 ips)
Signal to Noise Ratio	62dB
Dimensions	440 x 440 x 240 mm (17.3 x 17.3 x 9.4 inches)
Output Voltage	0.775V
Tape speeds	3 3/4 ips, 7 1/2 ips