Service Manuals, User Guides, Schematic Diagrams or docs for : Akai A A-4162 & 4191 A-4162 & 4191 Ver 1
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Models:
A-4162
A-4191
1. The System Block Diagram&the Block's Function Description
2. Schematic Circuit Diagram
3. Critical Components Diagram
4. IC Date Sheet&IC Description
5. Service Tools and Equipment
POWER
BOARD
(13005)
5 4 3 2 1
VCC AKIN1
[1,2,4] AKIN1 [2]
VCC R94 AKIN2
AKIN2 [2]
31k LCH
LCH [4]
DV33 RCH
[1,2,3] DV33 RCH [4]
LSCH
LSCH [4]
GND C65 100pF RSCH
[1,2,3,4] GND RSCH [4]
CENT
CENT [4]
AL -12V SUB
[2] AL SUB [4]
AR ACENTER CENTER1
[2] AR ALS
[2] ALS ARS ALS LSUR1 R104
[2] ARS
4
[2] ACENTER ACENTER C66 10uF/16v R103 5.1k U12A R107
ASUBW AL LMAIN1 RSUR1 2 - C67 10uF/16v 100
+
[2] ASUBW
MUTE_DAC 1 RSCH
+
[2] MUTE_DAC
AR RMAIN1 10k 3 +
2
C68
D
ARS RSUR1 NJM4558 OPA A_MUTE 1 Q12 D
MUTE_O 1000pF
8
[2] MUTE_O
ASUBW SUBW1 +12V
+12V -12V
3
OK-POINT
[2] OK-POINT
R112 CB56 CB57 CB58 CB59 CB60 CB61
31k
0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
C70 100pF
-12V
R114
VCC
4
C71 10uF/16v R113 5.1k U12B R115
SUBW1 6 - C72 10uF/16v 100
+
7 SUB
+
VCC 10k 5 +
2
C73
NJM4558 OPA A_MUTE 1 Q13
1000pF
8
+12V
3
R116
31k
DV33 C74 100pF
DV33 R172 0 -12V
C AKIN2
MUTE C
R118
4
C75 10uF/16v R117 5.1k U13A R119
LMAIN1 2 - C76 10uF/16v 100
+
1 LCH
+
10k 3 +
2
C77
NJM4558 OPA A_MUTE 1 Q14
1000pF
8
+12V
3
R122
31k
C78 100pF
R1730 -12V
AKIN1
R126
4
C79 10uF/16v R125 5.1k U13B R127
RMAIN1 6 - C80 10uF/16v 100
+
7 RCH
+
10k 5 +
2
C83
NJM4558 OPA A_MUTE 1 Q16
1000pF
8
+12V
3
B B
MIC INPUT
HEAD6-100
6x1 W/HOUSING
J11 +P12V
6 -P12V R140 100 C88 0.1uF AKIN1
5
4 R81 1k
3 MICIN MIC_IN MIC_IN C90
2 OK-POINT MUTE_O
1 +VCC MIC_IN 0.33uF
1K R75 100 R77
#!" !"
+VCC
R144 100 C93 0.1uF AKIN2 R139
31k
C95
A VCC 0.33uF C89 100pF A
-12V
R & C closed to MT1389E
3
R79
2 Q7 R142
4
2001 C91 10uF/16v R141 5.1k U15B R143
4K7 LSUR1 6 - C92 10uF/16v 100
+
7 LSCH
+
10k 5 +
1
C94 2
NJM4558 OPA A_MUTE 1 Q19
1000pF
8
+12V
3
5 4 3 2 1
5 4 3 2 1
P10
COAXIAL 5 3
R/V 4
[1,2,5] VCC VCC
[1,2,3,5] GND GND B/U 6
[2] CVBS CVBS 1
[2] R R RCH 7
[2] G G G/Y 8
[2] VB VB
LCH 9
D [2] ASPDIF ASPDIF D
[5] LCH LCH 2
[5] RCH RCH
[5] LSCH LSCH
[5] RSCH RSCH
[5] CENT CENT
[5] SUB SUB RCA-AV6
[2] A21 A21
[2] RGB_SWITCH
RGB_SWITCH
[2] FS0 $%&'()*+,-./012 Modify3 Value
FS0
+5VV +5VV
2
R74 D20
75,1% 1N4148
R76 0/NC
1
G/Y
J9
C C
2
G Q6 D21
3906 +5VV L20
RCH R78 L27 1.8uH +5VV
1 150,1% C100 C101 1N4148 VCC
LCH 2 +5VV 10uH
3 47P 47P C48 C49 C50
1
B/U 4 +5VV
ASPECT 5 0.1uF 1uF 47uF/16v
G/Y 6 3906
7 C
2
R/V
RGB/CVBS# 8 D22
SCART_CVBSO 9
B E
10 1N4148
P8
R159 0/NC
1
SCART,PH2.0-10A SCART_CVBSO
CENT 5 3
Note:Video is the high resistance output SUB 4
2
Q23 D23
3906 RCH 6
1N4148 1
RSCH 7
+5VV +5VV LCH 8
1
LSCH 9
2
R80 D24 2
+5VV +5VV 1N4148
R82 0/NC
1
2
B SC B/U RCA-AV6 B
D25
1N4148
2
VB Q8 D26
3906
R88 0/NC L23 1.8uH
1
CVBSO R84 C57 C58 1N4148
150,1%
47P 47P COMPOSIT
1
2
CVBS Q10 D27
8
3906 P11
R90 L28 1.8uH
150,1% C104 C105 1N4148 CVBSO
6 5
47P 47P 9
1
SY 4 3 SC
1 2
+5VV S-VIDEO
+5VV
VIDEO PORT
7
2
R87
D28
1N4148
R89 0/NC
1
SY R/V
A A
2
R Q11 D29
L26 1.8uH 3906
R91 C63 C64 1N4148
150,1%
47P 47P
1
5 4 3 2 1
5 4 3 2 1
[1,2,5] DV33 DV33
[1,2,4,5] GND GND DV33 SD33 DQ[0..15]
[2] DQ[0..15]
L29 FB
SD33 DRAM
[2] MA[0..11] MA[0..11]
[2] BA[0..1] BA[0..1]
[2] DQM[0..1] DQM[0..1] + CE25 CB37 CB38 CB39 CB40 CB41 [2] AD[0..7] AD[0..7]
U7
[2] DCLK DCLK
[2] DCKE DCKE 47uF/16v 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF FLASH
[2] CAS# CAS# MA0 21 2 DQ0
D
[2] RAS# RAS# MA1 A0 DQ0 DQ1 D
22 3
[2] WE# WE# MA2 A1 DQ1 DQ2 [2,3] SCL SCL
23 5
[2] CS# CS# MA3 A2 DQ2 DQ3 [2,3] SDA SDA
24 6
MA4 A3 DQ3 DQ4
27 8
DRAM MA5 A4 DQ4 DQ5 IIC
28 9
MA6 A5 DQ5 DQ6
29 11
MA7 A6 DQ6 DQ7
30 12
[2] PCE# PCE# MA8 A7 DQ7 DQ8 SD33
31 39 SD33 [2]
[2] PRD# PRD# MA9 A8 DQ8 DQ9
32 40
[2] PWR# PWR# MA10 A9 DQ9 DQ10
20 42
[1] VCC VCC DBA0 A10 DQ10 DQ11
19 43
BA/A11 DQ11 DQ12 CB29
45
[2] A[0..21] A[0..21] SDCLK DQ12 DQ13 CB43 CB44 CB45 CB46 CB47 CB48 CB49
35 46
SDCKE CLK DQ13 DQ14 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
34 48
CKE DQ14 DQ15
49
FLASH DBA1 DQ15 SD33
18
DRAS# CS
17 1
DCAS# RAS VCC
16 25
RN1 DWE# CAS VCC SD33
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