Akai GX-747 dbx Service Manual

8. PRE AMP P.C BOARD BLOCK
9. NR P.C BOARD BLOCK 10.
MIC P.C BOARD BLOCK
REF.
PARTS NO.
DESCRIPTION
REF.
PARTS NO. DESCRIPTION
REF.
PARTS NO.
DESCRIPTION
NO.
NO.
NO.
8-1
BA-T!01SA060A
PC
PRE AMP BLK GX-747dbx
9-1
BA-Tl0lSA0l0A
PC NR BLK GX-747dbx
10-1
BA-Tl0lSA0SOA
PC MIC
BLK GX-747dbx
8-ICl
EI-307644
IC NJM4556D
9-IC 1
EI-344144
IC µPC 1252H2
10-TRl
ET-308954 TR"2SC1844 E,F
8-TR!
ET-346113
TR 2SC3068
9-IC2
EI-344148
IC µPC 12S 3H2
10-TR2,3 ET-3372S8
TR 2SC1843 E,F
8-TR3
ET-328440
&,. TR 2SD863-V8 E,F
9-ICJ
EI-337360 IC µPC4082C
10-TR4
ET-308954 TR 2SC1844 E,F
8-TR4
ET-517263
TR 2SC1312R G,H
9-IC4
EI-344144 IC µPC 12S2H2
10-TRS ET-338181
TR 2SC2909 R,S
8-TRS
ET-639437
&,. TR 2SC945L Q,P
9-ICS
EI-344148
IC µPC1253H2
10-TR6
ET-338244
TR 2SA1207 R,S
8-TR6
ET-200399
&,. TR 2SB856 B,C
9-IC6
EI-337360
IC µPC4082C
10-VRl,2
EV-319494
VR ROTARY l6P11xou
8-TR7
ET-S 17263
&,. TR 2SC1312R G,H
9-IC7
EI-336994
IC MS230L
AS03 A503
8-TR8,9
ET-328440
&,.TR 2SD863-V8 E,F
9-TR 1 to4
ET-330270 TR 2SC2320 F,G
10-Cl
EC-343863
C PP V F0J FPS 5600G lO0DC
8-TRl0,11
ET-3089S4
TR 2SC1844 E,F
9-TR5
ET-318237 TR 2SB764 E,F
10-C2
EC-346170
C TT V DN lO0K 16DC
8-TRl 2
ET-639437
TR 2SC945L Q,P
9-TR6
ET-328440
TR 2SD863-V8 E,F
10-CJ
EC-3438S7
C PP V F0J FPS 3300G l00DC
8-TR13
ET-391768
TR 2SC458LG C,D
9-SWl
ES-344143
SW PUSH SUL 1 92A 2-06-02N
8-TR14
ET-338181
TR 2SC2909 R,S
9-VR!to4
EV-330531
RS-FIX H TM8KV2-1S 3P
8-TR16
ET-639437
TR 2SC945L Q,P
0.50W 503
11.
COUNTER P.C BOARD BLOCK
8-TR19to23 ET-639437
TR 2SC945L Q,P
9-VRS,6
EV-341239
R S-FJX H TM8KV2-1S JP
8-TR24
ET-318237
&,. TR 2SB764 E,F
0.50W 504
REF.
8-TR25
ET-517263
&,. TR 2SC1312R G,H
9-VR7
EV-341235
R S-FJX H TM8KV2-1S JP
NO.
PARTS NO. DESCRIPTION
8-TR26,27
ET-517263
TR 2SC1312R G,H
0.50W 103
8-D1 to3
ED-301911
D SILICON H DS448
9-R2
ER-338325
R MF H 1/4W 4302F
11-D 1 to6 ED-316143
D SILICON H !S2473HS FlO
8-D4,5
ED-308953
D GERMA H I K34A-LH SI 2
9-R3
ER-323487 R MF H F!0 1/4W 1503F
ll-D7 ED-322247
D LED SLP-15 ID RED
8-D8to12
ED-301911
D SILICON H DS448
9-R5
ER-310326 R MF H 1/4W !002F
ll-SW!to4 ES-319624 SW TACT KEC11903
8-D14,15
ED-301911
D SILICON H DS448
9-R6 ER-330.272
R MF H Fto 1/4W 3302F
ll-SW5to8
ES-323367 SW TACT KECl000l
8-D16
ED-313623
D ZENER H HZ22 3
9-Rl 1 ER-310326
R MF H 1/4W 1002F
11-INl
EM-330992 IND LE SL-1574W CHARACTER
8-D 17 to25
ED-301911
D SILICON H DS448
9-R12
ER-330272 R MF H Fl0 1/4W 3302F
8-Jl
EJ-308986
PIN J 1784Pl 782 P 4P
9-R14
ER-338325
R MF H 1/4W 4302F
8-J2
EJ-331184
PHONE J HLJ0345-100 2X 2P
9-RlS
ER-323487 R MF H Fl0 1/4W 1503F
12.
METER P.C BOARD BLOCK
8-J3
EJ-330545
PHONE J JP HLJ0315-020 6.3
9-R16
ER-318316 R MF H Fl0 1/4W 2201F
8-SWl
ES-301435
SW SLIDE CL210E 2-10-02S
9-Rl 7 ER-302353
R MF H Fl0 1/4W 2701F
REF.
PARTS NO.
DESCRIPTION
8-SW2
ES-330372
SW PUSH SUE24 2-THROW
9-R18
ER-318337 R MF H Fl0 1/4W 6801F
NO.
8-SW3,4
ES-319464
SW LEVER 00420460 2-04-02S
9-R20 ER-329282
R MF H Ft0 1/4W 2702F
8-SWS
ES-319448
SW LEVER 00420461 2-04-02N
9-R21
ER-314603 R MF H 1/4W 3001F
12-TRl,2 ET-517263 TR 2SC1312R G,H
8-SW6
ES-306714
SW ROTARY SRU1023N 1-02-03N
9-R22 ER-346169
R SD 1/4W 2261
12-R6 ER-281338 &R OMF H FS 2W l00J
8-SW7
ES-301436 SW SLIDE CL206E 2-06-02S
9-R26
ER-346158 R MF H T26 1/4W 1694F
8-VRl to3
EV-336849
R .S-FIX H KVSF807U JP 203
9-R33
ER-310326 R MF H 1/4W !002F
8-VR4
EV-336853
R S-FIX H KVSF807U JP 103
9-R34 ER-330272
R MF H F!0 1/4W 3302F
13.
LED P.C BOARD BLOCK
8-VR5,6
EV-341225 R S-FIX H KVSF807U 3P 503
9-R39
ER-310326 R MF H 1/4W 1002F
8-VR7
EV-319316
VR ROTARY 16P20x2A B103
9-R40 ER-330259 R MF H T26 1/4W 3302F
8-VR8
EV-336852
R S-FIX H KVSF807U JP 102
9-R41 ER-338325
R MF H 1/4W 4302F
REF.
PARTS NO.
DESCRIPTION
8-VR9
EV-336843 R S-FIX H KVSF807U 3P 303
9-R42
ER-319986 R MF H T26 1/4W 1503F
NO.
8-VCl,2
EC-330991
C S-FIX H ECR-BC090M 11 8.0-90
9-R43
ER-318316 R MF H F!0 1/4W 2201F
8-VLl
EO-319495
COIL VARI! GYD-102 lmH
9-R44
ER-302353 R MF H F!0 1/4W 2701F
13-D1
ED-337414 D LED SLP-235B GRN
8-Ll,2
EO-330990
COIL FIX 2 0358-042 510µH
9-R45
ER-318337 R MF H F!0 1/4W 6801F
8-Tl
EO-331190
COIL OSC 1 2330-065 l00KHz
9-R47
ER-329282 R MF H Fl0 1/4W 2702F
8-FLl
~0-315758
COIL TUN 1 I00S-431 l00KHz
9-R48 ER-30765 I R MF H Fl0 1/4W 3301F
14.
BIAS P.C BOARD BLOCK
8-FL2
EO-319447 COIL TUN! GYD-l00K JOO KHz
9-R49 RR-346169
R SD I /4W 226J
8-RLl,2
EP-308973
RELAY LEAD LAB2NS 2NO 24V
9-R53
ER-346158 R MF H T26 1/4W !694F
8-FRl
ER-308898 &,. R FUSE FR25SJ 1/4W l0IJ
9-R60
ER-309809 R MFV 1/4W6201F
REF.
PARTS NO.
DESCRIPTION
8-F2,3
ER-331188 &,. R FUSE ERD2FC S!0 1/4W
9-R6J ER-311773 R MF H I/4W 3301 F
NO.
8R2J
9-R64
ER-341399 R MF H 1/4W 1502F
8-R7
ER-331562
R OMF H SIS FS lW 4711
9-R65
ER-341399 R MF H 1/4W 1502F
14-VRl EV-331189
VR ROTARY 16P20X 2B .B5O2
8-C20
EC-325380
C PP V Fl0 PFH 3321 630DC
9-R66
ER-304948
&,.R CB H FS RDS 1/2W 821J
8-C28
EC-341409
C COMP V AWS 6801G 50DC
9-R69
ER-314672 R MF V 1/4W 1602F
9-C3
EC-344134
C COMP V AWS 1002G S0DC
9-CS
EC-337002
C EC V .F05 NP NXA 100M 16DC
9-Cll,12
EC-343879
C PP V F03 FPS 3301G l00DC
9-CIS EC-343879 C PP V F03 FPS 330JG !00DC
9-C17
EC-346114 C TT V DN l0OJ 2SDC
9-C19
EC-337261 C EC V F0S NP NXA !ROM 50DC
9-C23 EC-344134 C COMP V AWS 1002G 50DC
9-C27,28
EC-343879
C PP V F03 FPS 3301G !00DC
9-C31
EC-343879
C PP V F03 FPS 3301G l00DC
9-C33 EC-346114 C TT V DN 100J 25DC
-----------------------------PARTS LIST GX-747dbx ------------------------------
65

Akai GX-747 dbx Specifications

General

Track System	4-track, 2-channel stereo
Reel Size	up to 10.5 inch reel
Type	Reel to Reel
Heads	2 x erase
Motor	1 x capstan, 2 x reel
Tape Speed	9.5 cm/s, 19 cm/s
Wow and Flutter	0.03% (19 cm/s)
Signal to Noise Ratio	65dB
Input	1 x line, 1 x microphone
Output	1 x line
Dimensions	440 x 480 x 260 mm