Kenwood DM-9090 Service Manual

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IC27
IC26
IC25
IC24
IC29
IC28
IC32
IC33
IC31
IC30
X
X
C
A
DIGITAL REC
DIGITAL REC
MAIN
u-COM
CONTROLLER
D.R.I.V.E ON/OFF
D24
DECODER
CD TEXT
Q21 Q22
Q26
D215
DIGITAL REC SEL
(LINE/OPT/COAX)
D33
(REC)
D.R.I.V.E.
CON
RATE
SAMPLING
CONVERTER
SERI PARA
TEXT INPUT
u-COM
MEMORY
LATCH
DETECTOR
VOLTAGE
BACK UP
MEMORY IC
8BIT
LATCH
8BIT MEMORY
MEMORY IC
Q23
Q24
100K
R357
W1
W2
13
Z
1K
R386
R190
470
W5
R393 100K
R295
R391 100K
100
R394
1K
R387
110K
SRAM
11
14
+5V
+5V+5V
+5V
+5V
+5V
+5V
-33V
+5V +5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V+5V
+5V
+5V
+5V
C317
0.01
5
+5V
+5V
+5V
+5V
+5V
C309
0.01
C316 0.01
13
+5V
Q26
-33V-33V
100K
R296 100K
R289 100K
R374
47K
R352 1.8K
R297
1K
2
23
1
78
28
20
22
2173
4Y
3B
8
2Y
GND 3Y
7
4
L4
L3
1
R288
100K
4
16
15
14
12
11
9
10
13
1
ST
VCC
2
1A
SEL
4A
3
1B
4B
5
1Y
3A
6
2B
2A
R291 47K
C308 0.01
+
C307
47u10
C306 0.01
C315
100P
1
36
49
3
34
29
7
W4
R301
47K
R290
10
1000P
C179
R287
1K
C224 0.1
80 82
R285 100 R284 100
0.1
C223
42 40
83
R283 100
8FSBCKO
DAC TEST2
RESET N
LZ
GND AL
LO+
LO-
VDAL
VDAR
RO-
RO+
GND AR
RZ
DAC TEST1
DAC TESTO
NC
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
MCKO VDX XO XI GND X NC N VDD
NC NC
8FSLRCKO
8FSLDATA
8FSRDATA
NC
VDD
52 51 50 49 48 47 46
23 24 25 26 27 28 29 30
DI
DI
BCKI
BCKI
LRCI
ICLK
ICKSL
IFM1
IFM1
IFM2
IFM2
VSS
VSS
RSTN
RSTN
TST2N
TST1N
STATE
IISN
IISN
OW20N
OW20N
1
2
3
4
5
6
7
8
9
10
11
33
32
31
30
29
28
27
26
25
24
23
DOUT DOUT BCKO BCKO LRCO OCLK OCKSL THRUN THRUN SLAVE SLAVE
VDD VDD
DNDTE DNDTE
MDT/MCOM
MDT/PSI1
MCK/PSI2
MLEN/DEEM MLEN/DEEM
OW18N OW18N
44 43 42 41 40 39 38 37 36 35 34
12 13 14 15 16 17 18 19 20 21 22
13
7
6
5
3
2
1
4
8
X MODE
GND
9
SW1
TEST
MCK
10
SW2
WFCK
12
SCLK
SBSO
13
DQSY
SRDT SCOR
EXCK
VDD
14
11
R362
100K
R361
100K
22
23
21
31 30 32 33 34 35
D6 D4 D5
18 17 16 15
D3
D0
11
D2
13 12
D1
VSS
14 1
A14
2 3
A7
4 5
A5 A6
A12
6 7
A3
8 9
A1 A2
10
A4
VCC A13 A9 A8 WE
24 25 26 27 28
OE CS A10 D7
19 20 21 22 23
A11
A0
R239
470
5
4
4
R244 220
D4
D2
15
D5
Q1
16
Q6 Q5 Q2
D1
18
D6
Q0
19
Q7 D7 D0
17 14
OEVCC
20
7
35 33 34 32 30 31 29 23 22 21
68
69
70
C311 0.01
C310 0.01
R366 100K
R363 100K R365 100K
R368 100K
R369 100K
R299 100K
73
78
R325 100K R338 100K R324 100K R314 100K R313 100K R315 100K
1M
R298
X2
R341 100K
R364 100K
R300 100K
C321
0.1
C312
0.01
SCLK
X MODE
RESET
VDD
X2
X1
VSS
VDD
CRXD
CTXD
CENA
GND
STB
D0
D1
D2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
TXD
RXD
SRDT DOSY AVREF3 AVREF2 GND AVREF1 VDD
CS
WR
RD
A15 A14 A13 A12 A11 A10
A9 A8
D7 D6 D5 D4 D3
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
38 37 36
36
37
38
29
S IN STE
DA RST
3
CLK
DRIVE
5
DINSEL1
EMPHA
6
DIG RST DINSEL2 FLD RST
Q’S
8
AD RST GND QS
7 4
81
71
49
4 4
71
C207
0.01
3
16 15 14 12 11 9 10 13
1
OE
VCC
2
R337
1K
10
R378 100K
R377 100K
R376 100K
W6
11
22
27
85 84
21 10
89 90 89 90 87 86 87 86
23 9 24 8
88
85 88
91
84 91
25 26
12 11 13 14 15 16 17 18 19 20
Q4Q3
LEGND
10
9
D5D2
Q6Q1 Q5Q2
6 5 8 7
D4D3 D7D0
VCCOE
1
Q7QO
2 4 3
D6D1
26 25 24 23 21
R320
100K
91 89 87 85 84
90 86 88 10
9 8
92 93 94 95 96 97 98
27 26 24 23 21 20 22 25 18 19 17 16 15
1
WR
2
A12 A14
A13
3
A7
A8
5
A6
A11
6
A4 A5 A9
OE
8
A3
CS
9
A1 A2 A10
7 4
D7A0 D5 D6
D1 D0
12 11 10
D4D2 D3VSS
14 13
1 2 3
75 74 73
SI SO SCK VPP
1234
4 3 2 1
84 85 87 86 89
R238 470
2
1
2
33
2
1
72
79
75
76
78
77
73
74
68
69
70
67
66
65
R379 100
R380 100
R381 100
63
60
R356
1K
R355
1K
R354
100K
R371
R370 47K
0.1
C324
57
55
56
54
R384 100
R385 100
R383 100
R353 10K R351 10K R350 10K
R382 100
R349 10K
53
C323
0.1
43
6
1K
R344
5
0.01
C322
42 50 48 47 46 45 44
R347 100K
R348 100K
R346 100K
R345 100K
38
1.8K
R342
36 35 33 34 32 31
12MH
X3
VDD
+5V
KR0
KR1
KR2
KR3
TM SW
INI SW
BACK V
ENCB
GND
BACK ON
ENCA
+5V
SRDT
SWDT
SCLK
CRXD
CTXD
CENA
EXDT
FLDCE
DRDT
DWDT
DCLK
DLAT
DEMPH
DSUB1
DSUB2
SRCLAT
LOAD OUT
LOAD IN
REC SW(REC-P)
PHOT SW
STTLMT
DISC IN
PEFRECT
PROTECT
GND
SENS
XLAT
RMS
LDON
SDA
SCL
S DATA
S BUSY
SCHNG
INI SW2
MUTE
POWER
VDD
STB
CS
WR
RD
EXLAT
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
10 9 8 6 5 3 2 4 7 1
11
Q3
GND
12
Q4 E4
D3
13
MNT1 DDQSY DQSY SQSY CE XINT REM RESET GND GND X OUT X IN VDD MNT3 RECP(WRDWP) TX XRST MNT2 MNTO
BACK CHK
VLCK
VLDT
D0 D1 D2 D3 D4 D5 D6 D7
A8 A9
A10 A11 A12 A13 A14 A15
GND
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
88 90 92 91 93 95 94 98 97 96
80
82 83
X
X
X
X
X
X
X
XX
X
X
X
X
X
X
X
X X
X
X
X
X
X
+5V
+5V
+5V
+5V
+5V +5V
X
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U W Y AA ACV X Z AB AD
SD2P-2 97.11.28 2:34 AM y[W 2
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299

Kenwood DM-9090 Specifications

General

Type	MiniDisc Recorder
Sampling Frequency	44.1 kHz
Digital Inputs	Optical, Coaxial
Digital Outputs	Optical, Coaxial
Analog Inputs	RCA
Analog Outputs	RCA
Power Supply	AC 120V, 60Hz
Weight	4.5 kg
Recording Media	MiniDisc
Recording Format	ATRAC
Playback Formats	ATRAC
Recording System	ATRAC
Playback System	ATRAC
Frequency Response	5 Hz to 20 kHz
Wow and Flutter	Below measurable limits