Akai 4000DS Mk-II Service Manual

FIG. 7 PHOTO OF
PRE-AMP. P.C. BOARD (LE-5022)
PRE-AMP. P.C. BOARD (LE-5022) BLOCK
Symbol
No.
Parts No.
» w
Description
Q’ty
7-1 x HA4802SI Pre-Amp. P.C. Board Comp.
(LE-5022)
1
7-IC1,2 EI4I2413
Line Amp. I.C. LD-JI4I 4
7-1 Rl
ET352I46
Transistor 2SC4S8LG(I>) 2
7-TR2
F.T398845 Transistor 2SC87I(E.F)
2
7-TR3.4
ET234854
Transistor 2SC458LG(C)
4
7-D 1 ED219464
Germanium Diode IN34A 2
7-VRI
EV 337 577
Semi fixed Volume V I0KS-2-4 2k
B 2
7-VR2
F.V 337588
Semi fixed Volume VlOKS-2-4 20k B
2
Symbol
No-
Parcs No.
Description
Q’ty
7-Ll E0243977 Kerri Inductor FL7H IMH(J) 2
7-L2 EO244001 Ferri Inductor FL9H I OMH(J) 2
7*T1 BT247746 Head Phone Trans. N 19-228S 2
7-Cl
EC4328I0
Capacitor, Vertical Type
Elect. IOjiF 16WV(noiseless)
7-C2
EC290520
VFM I00PF(J) 50WV
7-C3 EC220364
Elect. IOOjiF 6.3WV
7-C4
EC493323
Elect. 1/iF 25WV(noiseless)
7-C5
EC47696S
Elect. 47/iF 2SWV(noiseless)
7-C6
EC220678 Elect. 47/iF 25WV
7-C7
EC290520
VFM 100PF(J) SOWV
7-C8
EC320051 Elect. 10/iF 16WV
7-C9 EC220364
Elect. IOOjiF 6.3WV
7-CI0
EC446297
Mylar 0.18|iF(J) SOWV
7-CII
MC220364
Elect. 1 OOjiF 6.3WV
7-CI 2
FC368335 Mylar 0.02 2*xF(J) SOWV
7 Cl3
F.C220994
Elect. 10/iF 2SWV
7-C14
EC3200S1
Elect. 10»F 16WV
7-CI 5
EC36833S
Mylar 0.022/iF(J) SOWV
7-CI 6
EC423562
VFM 470PF(J) SOWV
7-CI 7
F.C450527
Elect. 4.7jiF 2SWV
7-CI 8 EC 3 3621 6
VFM 330PF(J) SOWV
7-CI9
EC480071
Elect. 22/*F 1 6WV(noiseless)
7-C20
EC 3 362 1 6
VFM 330PF(J) SOWV
7-C2I EC47696S
Elect. 47/iF 2SWV(noiseless)
7-C22 EC 329771
Elect. 47jiF 6.3WV
7-C23
EC379I70
Mylar 0.1/iF(J) SOWV
7-C24
EC379787
Mylar 0.0039/iF(J) SOWV
7-C25
EC389485
Mylar O.OI8*iF(J) SOWV
7-C26
EC290520
VFM 100PF(J) SOWV
7-C27
EC329771
Elect. 47jiF 6.3WV
7 C28
F.C4S0S27
Elect. 4.7pF 25WV
7-C29
EC220678 Elect. 47jiF 25WV
7-C30 EC4S0527
Elect. 4.7jxF 2SWV
7-031
EC329850
VFM 220PF(J) SOWV
7-C32
EC329771 Elect. 47jiF 6.3WV
7-C33 EC220364
Elect. I00 mF6.3WV
7-C34
EC3298S0 VFM 220PF(J) SOWV
7-C35 EC350684
Elect. 22 aiF 2SWV
7-C36
EC 3 20051 Elect. 10/iF I6WV
2
2
2
Resistor, Stopper Type
7 Rl ER349907 Carbon RDl/4 33k(J)
7-R2 F.R4 14303 Carbon KDI/4 220k(J) (noiseless)
7-R3 KR306360 Carbon RDl/4 6.8k(J) 2
7 R4 F.R480060 Carbon RDI/4 33k(J) (noiseless) 2
7KS ER2M46S Carbon RD I/4 I k(J) 2
7-R6 ER2I3030 Carbon RDl/4 S.6k(J) 2
7*R7 ER346601 Carbon RDl/4 47k(J) 2
7R8 ER2I2883 Carbon RD I/4 4.7k(J) 2
7 R9 ER346601 Carbon RDl/4 47k(J) 2
7-RI0 ER3807II Carbon RDl/4 220k(J) 2
7-RII ER346994 Carbon RDl/4 l8k(JJ 2
7-RI2 ER336442 Carbon RD 1/4 lok(J) 2
7-RI3 ER2I2264 Carbon RDl/4 22k(J) 2
7-RI4 ER336442 Carbon RD 1/4 10k(J) 2
7-RIS ER342933 Carbon RD I/4 27k(J) 2
7-RI6 ER363644 Carbon RD 1/4 $60<J) 2
7-R I 7 ER213300 Carbon RD 1/4 680(J) 2
7-RI8 ER306843 Carbon RDl/4 i.2k(J) 2
7 RI9 KR336442 Carbon RDl/4 I0k(j) 2
7-R20 ER362485 Carbon RDl/4 330k(J) 2
7-R2I ER2I268I Carbon RD I/4 330(J) 2
7-R2 2 ER347038 Carbon RDl/4 270(J) 2
7-R23 FR4S00I I Carbon RDl/4 120k(J) 2
7-R24 ER343078 Carbon RDl/4 2.7k(J) 2
7-R25.26 ER336442. Carbon Rl) 1/4 I0k(J) 4
7-R27 ER357570 Carbon RDl/4 lS0k(J) 2
7-R28 KR212 883 Carbon RDl/4 4.7k(J) 2
7-R29 ER212477 Carbon RDl/4 3.3k(J) 2
7-R30.31 KR2I2264 Carbon RDl/4 22k(J) 4
7-R32 ER212 883 Carbon RDl/4 4.7k(J) 2
7-R33 KR343078 Carbon RDl/4 2.7k(J) 2'
When ordering parts, please describe Parts Number, Serial Number, and Model Number in detail.—

Akai 4000DS Mk-II Specifications

General

Type	Reel to Reel
Track System	4-track, 2-channel, stereo/monaural system
Signal to Noise Ratio	50dB
Reel Size	Up to 7 inch reel
Total Harmonic Distortion	1.5%
Output	0.775V (line)
Tape Speed	3.75 & 7.5 ips
Heads	1 x erase
Input Sensitivity	50mV (line)
Semiconductors	6 x Transistors
Inputs	Line
Outputs	Line