Service manual
MD-MT831H/W
– 29 –
7
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• The numbers 1 to 18 are waveform numbers shown in page 35.
Figure 29 SCHEMATIC DIAGRAM (2/3)
P28
P29 P30
SPDRR
DISCPR
SPIN
EMPH0
+2.5V
RDATA
RKEY
RPLAY
DCEXT
ELON
EMPH0
PBMUTE
BEEP
DINT
INNSW
AUDATA
AUSCLK
ELLVL
WP
OPICGA
RPLAY
PF4
SCK0
SPWDS
P14
P24
APQD
DINT
ARQ
RPLAY
ELONL
PCNT2
JPNP
VCC
VSS
VSS
EXTAL
VCC
µSTBY
NMI
MD2
WDTOVF
MD1
MD0
BUZOUT
VSS
RCPCNT
VSS
VSS
EEPD
ELONH
PCNT1
PBOPON
RCLAT
PBLAT
RADAT
RACLK
SGAIN
DISCP
RMDAT
PLVDRY
PLVDCI
PLVINN
MCMON
CKSTP
PDCNT
INPGCK
INPGI
MCPGI
TEST1
TEST0
KHOLD
STOP
REC
PLAY
DCEXT
DSPSCK
DSPDAT
DSPSTB
HDON
DISCPR
EJSW
DCNT1
RKEY
AVCC
FOK
SENSE
CIN
SPIN
RESET
VCC
XTAL
EMPH0
SWPUP
INNSW
VSS
LDON
SYRS
SYRD
SYWR
SYD7
SYD6
SYD5
SYD4
SYD3
SYD2
SYD1
SYD0
XRST
EEPK
EPCS
AVSS
Vref
LDVAR
TEMP
HKEY2
HKEY1
OPICGA
DISC
SGAIN
PBAULT
LDON
INPGCK
INPGIN
MCPGIN
RCAULT
RCPCNT2
DRY
DCI
INN
TEMP
LDVAR
HKEY2
HKEY1
SENSE
FOK
XRT
HDON
SW401
EJECT
HDON
CIN
SPIN
PDCNT
DISCPR
DSPSTB
DSPDAT
DSPSCK
PCNT1
X176KO
SPDRR
SPDRF
SLDRR
SLDRF
TRDRR
TRDRF
FODRR
FODRF
INNSW
PDCNT
EFMO
DCNT1
1.7V
VCC2R5V
SYRS
SYRD
SYWR
SYD2
SYD1
SYD0
SYD7
SYD6
SYD5
SYD4
SYD3
VCCENDEC
EMPH
LDCNT2
LDCNT1
PLLBVC
VPO
DILOCK
RAA11
VDD1
VREF
EFMO
TCRS
RAA3
RAA2
RAA1
RAA0
RAA4
RAA5
RAA6
RAA7
RAA8
RAOEX
RACASX
RAD2
RAD3
VDD2
DGND
RAA9
RARASX
RAWEX
RAD1
RAD0
AVCC2
DGND
AVCC
EFMI
DGND
VDD2
VDD1
DGND
BIN
EIN
FIN
AIN
AGND
TCG
SPDRR
SPDRF
SLDRR
SLDRF
TRDRR
TRDRF
X176KO
TEST2
FODRF
FODRR
TEST0
TEST1
WBI
VBAT
SYRDX
SYWRX
SYSD7
SYSD6
SYSD5
SYSD4
SYSD3
SYSD2
SYSD1
SYSD0
RSTX
DINTX
MCCK
COUT
SENSE
FOK
ADPON
DAPON
OPTCNT
DCNT
TEMON
TOTMON
X700KO
VXI
X1I
X1O
DIN
DOUT
DGND
LRCK
BCLK
DFCK
ADDATA
DADATA
FEMON
SYRS
PLCK
ACRCER
RAA10
EFMMON
SYRS
SYRD
SYWR
SYD7
SYD6
SYD5
SYD4
SYD3
SYD2
SYD1
SYD0
DINT
CIN
SENSE
FOK
XRT
2.0V
EFMO
LDCNT1
LDCNT2
OPTCNT
DAPON
ADPON
EMPH1
ADDATA
DADATA
DFCK
DIN
LRCK
BCLK
+2.7V
VCCDRAM
VCC
GND
A10
GND
I/O4
I/O3
CAS
OE
A8
A7
A6
A5
A4
VCC
A3
A2
A1
A0
A9
RAS
WE
I/O2
I/O1
R
906
2
70K
R907
180K
R904
12K
R909
10K
C902
0.01
R855
IC203
62FP1702
1.7V
REGULATOR
3
2
1
C206
1
Q601
RT1P441 U
Q602
RT1N441 U
IC200
62FP2502
POWER DRIV
E
3
2
1
C200
1
C605
0.1
TP610
C600
22/6.3
L600
2.2µH
R404
100K
R424
22K
R425
22K
R423
22K
TP402
R407
10K
SW402
HOLD
R408
100K
XL401
4.19MHz
TP400
R402
100K
TP412
TP404
TP403
TP441
IC401
IX2823AF
SYSTEM
MICROCOMPUTER
100
99
98
97
96
95
95
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
43
42
41
40
39
38
37
36
35
34
33
32
31
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
TP417A
TP416A
TP417
TP416
R422
100K
TP406
R406
100K
R405
10K
C130
0.1
TP405
C401
0.1
TP415
TP401
TP414
4
3
2
1
TP413
TP487A
3
9
R416 1K
R414 1K
R415 1K
IC404
N7SZ86P5
GATE IC
5
4 3
2
1
TP409
TP411
TP407
58X2404T
EEPROM
8
7
6
5
4
3
2
1
TP410
TP410