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– MAIN SECTION –
ADDT
SDTO
A
(Page 34)
13
AUDIO
INTERFACE
CONTROLLER
DADT, BCK,
LRCK
DADT
SDTI
B
(Page 34)
14
BCK
BICK
12
LRCK
LRCK
11
SWDT, SCLK
SWDT
CDTI
D
(Page 34)
15
CONTROL
SCLK
CCLK
16
REGISTER
CS
INTERFACE
17
C
(Page 34)
DIN1, LRCKI,
DATAI, XBCKI
E
(Page 34)
40
15
XIN
X15
10MHz
13
XOUT
4
1 2 84
REMOTE CINTROL
RECEIVER
IC741
70
69
68
C766, R766
65
OSCI
FL/LED DRIVER
OSC
IC760
66
OSCO
SEG01 – SEG35
AD1 – AD4
COM01 – COM22
3 – 37
79, 80, 2,1
73
75
72
D726
LED DRIVE
STANDBY
Q726
D733
GROUP
LED DRIVE
ON/OFF
Q733
FLUORESCENT INDICATOR TUBE
FL750
D772
LED DRIVE
MD LP
Q772
DATA
BUFFER
+5V
Q803,804
6
5
J780
4
3
KEY BOARD
2
1
BUFFER
CLK
Q801,802
KEYBOARD
OFF SWITCH
Q805
A/D, D/A CONVERTER
IC500
AINL
HIGH-PASS FILTER,
A/D
3
LINE AMP
SUB-
DIGITAL
CONVERTER
AINR
TRACKTION
IC101
2
ATTENUATOR
BLOCK
AOUTL+
MIX AMP
26
AOUTL–
IC111
(1/2)
25
DIGITAL
D/A
ATTENUATOR,
CONVERTER
AOUTR+
SOFT MUTE
BLOCK
28
MIX AMP
AOUTR–
27
IC111
(2/2)
XTI
CLOCK
9
GENERATOR,
XTO
CLOCK DIVIDER
8
X509
PD
CLKO
11.2896MHz
19
21
39
SYSTEM CONTROLLER
IC1 (2/2)
KEY0 – KEY3
87
88
97,95-93
92
S746
TIMER
1
3
ROTARY
ENCODER
REC
RESET
67
OFF
SW
GND
5
4
PLAY
39 – 60
61
62
S713
l AMS L
PUSH ENTER
FL DRIVE
Q761, 762
S701 – 706, 711, 712,
S714-716, 721 – 724,
S726,S732-734
J101
L
ANALOG IN
R
LOW-PASS
FILTER
L
IC112
(1/2)
ANALOG OUT
LOW-PASS
R
FILTER
RV791
IC112
(2/2)
PHONE
LEVEL
MUTING
Q121,221
–1
HEADPHONE
MUTING
AMP
CONTROL SWITCH
IC131
Q151
–2
INV.
IC202
D152
D151
2
4
38
79
NET MD_CLK
7
NET MD_SI
6
NET MD_SO
5
UCS
76
UNIT
75
URESET
77
IUPLLSW
78
22
21
34
19 12
81
6
9
IC681
+3.3V
SCHMIDT
(SYS)
TRIGGER
D406
+3.3V
(BACKUP)
D405
3
RESET VCC
5
BT404
IC406
LITHIUM
BATTERY
RESET
–39V
(FL DRIVER (IC760) B–)
IC421
+5V
+5V
REGULATOR
VD +5V
3
OUT
(TO IC500)
+3.3V
VT +3.3V
REGULATOR
(TO IC500)
Q471
35
35
• SIGNAL PATH
: PLAY (ANALOG OUT)
: REC (ANALOG IN)
• Abbreviation
SP : Singapore model
J791
PHONES
D201
CN203
USB EN
DIN1
DSPIF0
35
1
7
DP
USB
LRCKI
DSPIF1
39
2
8
MD
XBCKI
DSPIF2
USB
40
3
10
DATAI
DSPIF3
4
11
42
DSPCLK
5
CPUCK
51
RAM
CPUSO
52
CPUSI
53
MGR
CPUXCS
56
CPUINT
57
RESET
KEY
58
PLLSW
3
PLL
UNICORN
OSC
NET MD USB I/F
IC201
47
48
TR950
X201
POWER
12MHz
TRANSFORMER
RECT
RELAY
RELAY +5V
D411-414
+5V
REGULATOR
RECT
D431,432
+3.3V
RECT
REGULATOR
D401,402
IC401
D404
TR900
POWER
TRANSFORMER
CN404
AC
(TO FL750)
–32V
RECT
REGULATOR
Q451
IC451
RELAY
RECT
UNREG +12V
DRIVE
D441, 442
Q911
AUDIO
CIRCUIT
RECT
D443–444
UNREG –12V
UNREG +12V
LOADING MOTOR
VOLTAGE
DRIVER (IC461) B+
SELECTOR
RECT
S991
VIN
1
D421,422
SP
MDS-JE780
RELAY
+5V
AC IN
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