– 31 –
MD-MT88H/99H
7
8
9
10
11
12
5 7 8 6
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
–B
–B
–B
–B
–B
–B
+B
+B
+B
+B
2.0V
+2.7V
+2.7V
AD/DA
CONVERTER
REGULATOR
DC/DC CONVERTER
DC/DC CONVERTER
RESET
RESET
EEPROM
16M BIT D-RAM
2.3V
REGULATOR
AUDIO AMP.
AUDIO AMP.
EXCLUSIVE
OR GATE
4.5V
REGULATOR
2.0V REGULATOR
13
12
11
10
9
8
7
6
5
4
3
2
1
6
5
4 3
2
1
4
1
3
2
1
4
3
2
1
6
5
4
3
2
1
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
6
5
4 3
2
1
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
8
7
6
5
4
3
2
1
3
2
1 4
3
2
1
5
4 3
2
1
5
4
3
2
1
5
4
3
2
1
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
16
NC
15
14
13
12
11
10
9
8 7 6 5 4 3 2 1
24
NC
23
22
21
20
19
18
17
16
15
14
13
12 11 10
9 8 7 6 5 4 3 2 1
OPTICAL
LINE IN
MIC IN
REMOTE
CONTROL/
HEADPHONES
DC IN
9
8
7
6
5
4
3
2
1
4
3
2
1
13
12
11
10
9
8
7
6
5
4
3
2
1
9
8
7
6
5
4
3
2
1
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
18
17
16
15
14
13
12 11 10
9 8 7 6 5 4 3 2 1
8
7
6
5
4
3
2
1
3
2
1
5
4
3 2 1
6
5
4
3
2
1
6
5
4
3 2 1
8 7 6 5
4
3
2
1
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
PCNT1
STOP
HPLAY
HREC
HKEY2
HKEY1
CHGCNT
CHGCNT
PLVON
CHGON
PLVBAT
PCNT2
PCNT2
PCNT1
PLVON
CHGON
PLVBAT
TEMP
HREC
LCDRST
STOP
+2R7
VG
VCC2R5V
VCC4R5
DCNT1
HPLAY
AY
XRT
FOK
SENSE
HKEY1
LDVAR
HKEY2
RKEY
DINT
VCCDRAM
DFCK
OPTCNT
DIN
BCLK
EMPH1
LRCK
ADDATA
ADPON
DAPON
DADATA
DCVDD
VGBATT
VCCBATT
VCCMICOM
–2R5
VCCADDA
EMPH0
DSPDAT
DSPSCK
DSPSTB
PBAULT
PBMUTE
BEEP
RPLAY
RDATA
RDATA
RKEY
AURESET
MCPGIN
INPGIN
INPGCK
AUDATA
AUSCLK
RCAULT
I/O1
I/O2
WE
RAS
A9
A0
A1
A2
A3
VCC
A4
A5
A6
A7
A8
OE
CAS
I/O3
I/O4
GND
A10
GND
VCC
BATTERY
TERMINAL
BATTERY
TERMINAL
DC 1.2V
(NICKEL-METAL
HYDRIDE )
DC 1.5V
LR6(SIZE AA)
G1
G2
S2
S2
S1
S1
D
D
STAND
BY
STAND
BY
ERRAMP
VREF
CTRL
CMP
Q R RSFF S
Q R RSFF S
BUF
BUF
OUT
OUT
EIP
EIN
OSC
ROSC
VCC
VCC
GND
EO
EO
GND
ROSC
OSC
EIN
EIP
CTRL
CMP
VREF
ERRAMP
VCOM
AOUTR
AOUTL
PWAD
PWDA
VSS
VDD
DEM1
DEM0
MCLK
SDTO
SDTI
SCLK
LRCK
AINL
AINR
OUT
VDD
VSS
VSS
VDD
OUT
GND
VCC
L
R
GND
VCC
GND
Vout
V+
V–
O
–
+
+
–
O
R-CH
L-CH
VEE
VCC
R-CH
L-CH
ROUT
DGND
RIHP
LOUT
LIHP
AGND
RI
LI
ATT
LIN
LLPFO
L–
L+
R+
R–
RLPFO
RIN
LHPVEE
LHPVCC
DAT
CLK
LAT
RHPVEE
RHPVCC
HP
BEEP
LPF
LPF
ATT
AMP&GAIN SEL.
AMP&GAIN SEL.
LOGIC
BIAS
L-CH
R-CH
KEY
PLAY
GND
MODE/CHRG
ENTER/SYNC
DISP
VOL –
VOL +
BASS
EDIT
REC
:OFF/HOLD
PLAY/PUSE
KEY SWITCH FLEXIBLE
PWB ASS'Y(221)
LCD UNIT
ASS'Y(222)
LCD
LCD
DRIVER
2
1
3
1
3
2
IC255
IC841
IC821,851
CPH3413
N-ch MOS FET
TP200
TP418
TP406
TP415
TP405
TP401
TP500
TP412
TP462
TP459
TP458
TP457
TP456
TP455
TP454
TP461
TP451
TP452
TP453
TP463
TP460
TP486
TP488
TP481
TP489
TP482
TP487
TP483
TP702
TP704
TP706
TP708
TP701
TP705
TP707
TP703
TP714
TP711
TP713
TP712
TP727
TP728
TP721
TP722
TP723
TP724
TP725
TP726
TP805
TP802
TP801
TP803
TP804
TP809
TP842
TP841
TP771
TP772
TP729
C202
47/6.3
L202
33
R455
5.6K
R456
8.2K
R457
18K
R458
56K
R451
5.6K
R453
18K
R452
8.2K
R454
56K
CN451
CN482
C482
1
C481
1
R719
6.8K
R720 6.8K
C734 0.1
R712 6.8K
R711 6.8K
L710
47
C701
10/6.3
C702
10/6.3
R702
22
C703 0.01
R703
100K
R701 100
J701
R725
100
R729
4.7K
R730
4.7K
J702
C723 0.001
R423
22K
(1%)
C802 0.01
R812
10K(1%)
R813
10K(1%)
R284
390K
R283 100K
R279
100
IC259
HN1C01FU
R277 39K
C259
0.1
R269
39K
(1%)
C801
1
Q461
2SD1819 AS
R462 27K
R460
68K
C818 0.1
IC809
UMD12N
R818
560K
R819 22K
D281
1SS400
R288
47K
R287 560K
Q257
2SA1832 GR
R292
100K
IC892
HN1C01FU
R293
2.2K
R294 100K
R296
100K
R295 100K
R286 2.2K
IC253
UMD12N
R281
22K
R282
1M
Q250
2SA17457
IC251
TPC8212
N-ch MOS FET
C252
0.1
R252
150K(1%)
R257
27K(1%)
IC801
62RP2002
R272 100
R254
22K
D251
1SS400
R253
39K(1%)
IC803
S80819LN
R809
1
R811
1
Q801
2SJ520 TL
D803
RB520S30
R807 22K
IC802
HN1C01FU
R814
10K(1%)
R815
10K(1%) R816 1.5K
Q803
UN5213
IC256
RN4911
IC255
NJM022V
OPE AMP.
R266 47K (1%)
R262
120K(1%)
R267 10K (1%)
R271
68K(1%)
R270
68K(1%)
R291 100
C291
1
IC257
S80808LN
C254 0.1
R250 100
C255 0.1
C253
0.1
R255
4.7K
R256 56K
Q251
2SD1819 AS
IC258
HN1C01FU
R285 100K
C251 0.1
R251
100
R261
1K
IC260
UMD12N
D801
F05J2L
PS801
1.1A
R803
1.2K
L801
R808
1(1%)
R810
1(1%)
L800
J801
Q891
2SA1873 GR
R802 560
D802
MA8051M
R806
56K
L452
R768
4.7
L457
10K
R767
4.7
C766
0.22
C765
0.22
R766 15
C761
2.2
C753
1
L456 100mA
J703
C491
0.1
D491
0.01
D494
MA8075M
L491
33
R492
1K
D492
MA8075M
L454
L453
100mA 150mA
100mA
R765
15
C716
0.1
C492
1
D496 MA8075M
D495 MA8075M
R718
1K
C713
1
C714
1
Q711
RN1444 A
R717
1K
C733
0.1
L714 100mA
R715
100K
R716
100K
C722
3.3/10
C715
0.1
C712
100P (CH)
C711 100P(CH)
R713
10K
C726 3.3/10
R726
39K
Q721
2SD2351 W
C725 3.3/10
R724 6.8K
R723 6.8K
C724
0.001
C721 3.3/10
L711 100mA
L713 100mA
L712 100mA
L702 100mA
L703 100mA
R714
10K
L704 100mA
C731
0.22
R727 8.2K
R728 1K
C774
1
C762
2.2
C500
10/6.3
C511
1
C501 0.0022
R501
470
C509
2.2
C510 2.2
C502
0.0022
R502 470
C503 3.3/10
C551 0.1
R758 100
R761 150K
C754
1
R762 100K
R754 150K
R757 2.2K
C760
0.1
C771 47/6.3
C869 47/6.3
C758
1
IC203
62FP1602
C773
0.22
R871 100K
C850
0.1
R850
100K
L851
22
µ
H
C840 220/4
F841
0.4A
DC60V
C841
1
L841 47
µ
H
D842
HRB0103B
C847
1
C846 0.1
D841
F10J2E
C845
0.1
R844 47
C842 33/6.3
C843 0.22
C876
1
C860 1
R856 10M
R854
10K
C857
18P(CH)
IC852
IR3M14N
C851
3.3
C852 22/6.3
D851 D1FH3
C862
1
D862
F10J2E
D861
F10J2E
C853 220/4
R831
200K
(1%)
C830 1
R823
270K
R827
220K(1%)
R825
300K(1%)
R826
10M
C826
100P(CH)
R824
10K
C827
220P(CH)
IC822
IR3M14N
C839 0.33
R853
270K
R857 330K (1%)
C856
68P(CH)
R855
390K
(1%)
R832
180K(1%)
C863
1
C823 220/4
C822 22/6.3
C821
3.3
D821
D1FH3
L821
10
µ
H
R833
47
C838
0.1
C833 0.1
D832
HRB0103B
C834 0.1
C835
0.1
D831
HRB0103B
C832
0.1
C837
1
C836 1
SW403
LID OPEN
C130
0.1
R467 22K
D467
RB521S30
D461
RB731U
220K
R466 560K
R465 100K
R406
100K
C401 0.1
R405
10K
R424 22K
R425 22K
58X2402T
SW401
EJECT
IC771
62GR2322
IC703
IR3R59N
IC701
IR3R54N
IC871
TC7S86FU
IC873
62GR4522
IC841
6372C251
2.5V UP
CONVERTER
IC202
IX2735AF
IC501
AK4551VT
IC851
IC821
Figure 31 SCHEMATIC DIAGRAM (2/2)