Circuit Description - Kenwood DM-SE7 Service Manual

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3 7 63 1515 0
1. Main microprocessor : uPD784215GF506
1-1 Microprocessor periphery block diagram
(X25)IC21
RAM
(X33)IC6
E2PROM
(X33)IC2
TE
L 13942296513
CXD2652AR
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CIRCUIT DESCRIPTION

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
EXDT
10
(X25)IC15
x ao u163
y
Q1
i
Q2 FLRST
Q3 ADRST
Q4 DIGRS
DM-SE7/SE7(G)/SE9
2 9
8
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
Q Q
3 6 7 1 3 1 5
SRCLAT 78
VLCK 26
VLDT 63
VOLLAT 71
SBUSY 81
SDATA 82
KR1 54
KR2 55
KR3 56
INISW 58
EXLAT EXCK
11 4
co
DRIVE Q5
.
DINSEL Q6
EMPHA Q7
DARST Q8
9 4 2 8
MECHA
MDM-04
(X25)IC11
LC8904Q
(X14)IC1
LC75710NE
0 5 8 2 9 9 4 2 8
(X25)IC13
SM5844AF
(X25)IC2
ELECTRIC Vol.
(X25)J3
SERIAL.
m
9 9
9 9
3