Kenwood DM-SE7 User Manual

DM-SE7/SE7(G)/SE9
3
CIRCUIT DESCRIPTION
1. Main microprocessor : uPD784215GF506
1-1 Microprocessor periphery block diagram
PROTECT 23
REFLECT 20
DISCIN 25
STTLMT 24
PHOTSW 21
RECSW 19
LOADIN 32
LOADOUT 31
DRDT 73
DEMPH 77
DDQSY 48
DLAT 76
DSUB1 80
DSUB2 79
DWDT 74
DCLK 75
FLDCE 3
SRCLAT 78
VLCK 26
VLDT 63
VOLLAT 71
SBUSY 81
SDATA 82
KR1 54
KR2 55
KR3 56
INISW 58
1 A16
2 A17
84 AD0
: :
91 AD7
92 A8
: :
99 A15
5 RD
6 WR
7 CS
8 ASTB
33 SCHNG
13 SCL
34 SDA
28 XLAT
15 SENS
30 MNT0
14 MNT2
12 XRST
35 TX
27 RECP
29 MNT3
45 XINT
47 SQSY
48 DQSY
50 MNT1
65 SRDT
66 SWDT
67 SCLK
16 POWER
72 MUTE
17 LDON
18 RMS
36 BACKCHK
44 REM
46 CE
59 BACKV
83 BACKON
uPD784215GF506
E2PROM
CXD2652AR
MDM-04
LC8904Q
LC75710NE
SM5844AF
EXDT
10
EXLAT
11
EXCK
4
Q1
Q2 FLRST
Q3 ADRST
Q4 DIGRS
DRIVE Q5
DINSEL Q6
EMPHA Q7
DARST Q8
RAM
(X25)IC21
(X33)IC6
(X33)IC2
(X25)IC11
(X14)IC1
(X25)IC13
(X25)IC2
(X25)J3
(X25)IC15
MECHA
ELECTRIC Vol.
SERIAL.
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TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299

Kenwood DM-SE7 Specifications

System

minidisc digital audio system laser	semiconductor laser
recording method	field modulation overwrite method
audio compression	ATRAC (Adaptive TRansform Acoustic Coding)

Digital Audio Performance

frequency response (playback mode)	8 Hz ~ 20 kHz, ± 1 dB
signal to noise ratio (playback mode)	more than 92 dB
dynamic range (playback mode)	more than 90 dB

General

power consumption	14 W
dimensions	W: 200 mm, H: 77 mm, D: 247 mm
weight (net)	2.1 kg