
DQSY
SCLK
SRDT
XMODE
73
1
78
3
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
44
23
22
21
ADDRESS
/DATA
BUS
ADDRESS
BUS
ASTB
RD
WR
CS
51
50
49
MTXD
MRXD
MENA
CRxD
CTxD
CENA
MAIN u-COM
uPD784215GF
-508
uPD7804035GC
IC29,IC30
HM62256BLFP-8
T/-7T/-12T
[SRAM]
TC74HC373AF
X25- IC28 (Except DM-5090,K-type)
Titler & CD text
Sub - u-COM
IC31
1050MD/DM-5090/DM-9090
7
CIRCUIT DESCRIPTION
1-2. Initialization
POWER
= ON (DM-9090,DM-5090)
REC INPUT
= ANALOG
AUTO/MANUAL
= AUTO
FADE
= OFF
PLAY MODE
= TRACK
REPEAT
= OFF
TIME DISPLAY
= )
LEVEL METER MODE
= NORMAL MODE
DIGITAL REC LEVEL
= 0dB
AUTO TNO TIME
= 2 sec
AUTO TNO LEVEL
= 3 (-50dB)
FADE TIME
= 3 sec
REC END WRITE
= ON
DRIVE
= ON
PRESET TITLE
= PRE1 : Pops
PRE2 : Rock
PRE3 : Classic
PRE4 : Jazz
PRE5 : Disco
PRE6 : Best Hits
PRE7 : Air Check
PRE8 : No.
PRE9 : Vol.
INI SW1
AVref(0.8~1.0AVref)
Mecha. u-COM MODE
0.7AVref(0.6~0.8AVref)
-
0.5AVref(0.4~0.8AVref)
DMF-7002S (J type)
0.3AVref(0.2~0.4AVref)
DM-9090
0.0AVref(0.0~0.2AVref)
DM-5090
INI SW2
High
Overseas : No katakana character
: No cyber titler
Low
Japan
: Katakana character
: Cyber titler
0.00V
0.80V
1.61V
2.41V
3.22V
4.00V
~0.78V
~1.59V
~2.39V
~3.20V
~3.98V
~4.98V
KR0 POWER EJECT
PAUSE
-
FF
-
KR1
STOP
REC
PLAY
-
FB
TT
SEARCH
KR2
DEL
SPACE
TT.
REC.
MONI
TIME
/EDIT
INPUT
INPUT
-TOR
DISP
LEVEL
KR3
SET
ENTER
CHR
AUTO /
METER REPEAT
/ REC
MANUAL MODE
2. Sub microprocessor : uPD784035GC (X25- ,IC28)
2-1. Sub microprocessor periphery block diagram
1-4. Key voltage matrix
1-3. Switch control table
(AVref=Vdd)
1050MD/DM-5090(K) COVER 97.11.28 2:25 AM y [ W
14
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