Sharp MD-SR50HBL Service Manual page 27

DADATA
ADDATA
DFCK
BCLK
LRCK
DIN
ADPON
DAPON
OPTCNT
EMPH1
IC202
IX2567AF
4M D-RAM
1
I/O1 GND 20
2
I/O2 I/O4 19
3 18
WE I/O3
4
RAS CAS 17
5 16
A9 OE
A0 A8
6 15
A1 A7
7
14
A2 A6
8 13
A5
A3
9 12
VCC A4
10
11
C202
47/6.3
VCCDRAM
R202
33
+B
+2.7V
62FP2002
2V REGULATOR
C206
1
2.0V
C.
OPICGA
DON
R422
100K
7
PLVON
1
VAR
GCNT
MP
EY1
EY2
DRY
R443
12K
RCPCNT
PCNT1
PCNT2
IC873
62GR4522
4 3
2
5 1
C837
1
C836
1
4.5V REGULATER
W403
D DETECTION PCNT1
PCNT2
PLVDRY
CHGON
PLVON
CHGCNT
7
R457
R455
18K
5.6K
R458
HKEY2
56K
R456
8.2K
R454
HKEY1
56K
R451 R452 R453
5.6K
8.2K 18K
HPLAY
HREC
+B
+2.7V
C509
R501
2.2
470
C500
10/6.3
R502
C510
470 2.2
C511
1 C502
0.0022
TP500
8 7 6 5 4 3 2 1
L500
47 H
5
9 10 11 12 13 14 15 16
C506
0.001
6
7
8 IC771
62GR2522
2.5V REGULATOR
C773
1 5
0.22
2
C774
3 N.C. 4 1
+B
L871
0.47 H
IC203
C872
10/10
L771
100 H
1
3
2
C771
47/6.3
+B
-B
L862
100 H
C868
1
C869
47/6.3
IC871
TC7S86FU
EXCLUSIVE OR GATE
VCC
1
D862
2
F10J2E
3
GND
C863
1
L851
D851
C862
22 H
D1FH3
1
D
C851
G
C853 3.3
220/4
S IC852
IR3M14N
R856
10M
DC/DC CONVERTER
C857
R854
560P
10K
ERRAMP
GND
5 4
EO
C856
R857
330P(CH)
EIN
330K 6 3
OUT C860
1
VCC 2
7
R853
EIP
STAND
BY
270K
8 1
ROSC CTRL
C827
R824
220P
10K
R826
ERRAMP
GND
5 4
EO
10M
(CH)
EIN
R825
6 3
C826
OUT
300K
100P(CH)
VCC
7 2
R823 EIP
STAND
R827
BY
270K
220K
8 1
ROSC CTRL
IC822
IR3M14N
DC/DC CONVERTER
D831 D832 C838
HRB0103B HRB0103B 0.1
VG
R833
47
D821
D1FH3
+2R7 +B
D
L821
G
10 H
C823
220/4
S IC821
CPH3403
C828
N-CH MOS
1
FET
D822
F10J2E
D823
C825
F10J2E
1
8
Figure 27 SCHEMATIC DIAGRAM (2/2)
TP451 DISPLY
1 1
TP452 EDIT
2 2
TP453 P-MODE
3
3
TP454 BASS
4 4
TP455 SKIP UP
5 5
TP456 VOL DOWN
6
6
TP457 VOL UP
7 7
TP458 ENTER
8 8
TP459 SKIP DOWN
9 9
TP460 STOP
10
10
TP461 PLAY
11 11
TP462 REC
12 12
TP463 GND
13
13
CN451
C481
1
TP481
1 1
TP482
C482
2
2
1 TP483
3 3
4 4
5
5
DSPDAT TP486
6 6
DSPSCK
TP487
7 7
DSPSTB TP488
8
8
DSPRST TP489
9 9
CN482
IC501: AD/DA CONVERTER
IC701
IR3R54N
AUDIO AMP.
R702
-B
22
INPGCK
INPGIN
MCPGIN
-B
R754
150K C758
TP412 1
R761
220K
R758
12 11 10
9 8 7 6 5
100
RHPVEE
BIAS AMPuGAIN SEL.
R757
2.2K
LOGIC AMPuGAIN SEL.
LHPVEE
C760
0.1
13 14 15 16 17 18 19 20 21
TP772
C753
1
+B
5
C876
1
4
DCVDD
C840
220/4
C849
220/4
D842
C845
HRB0103B
0.1
VGBATT
C847
1
D841
L841
F10J2E
4.7
TP842
1 5
C841
2
1
3 4
R850
100K
C850
IC841
0.1
6372C281
C842
2.8V UP
33/6.3
CONVERTER
R841
C848
100K
1
C844
10/6.3
4 3
2
5 N.C. 1
IC842
XC62HS02
IC259
2.35V
HN1C01FU
REGULATOR
POWER
TRANSISTOR
4 3
5 2
6 1
C259
0.1
R279
100
TP809
D281
R288
1SS400
47K
IC253: DIGIITAL TRANSISTOR
IC258: TRANSISTOR
IC255: OP AMP
IC260: DIGIITAL TRANSISTOR
9 10
– 27 –
MD-SR50H/50W/60E/60W
LCD
L710
R717
47
1K
R712
R720 5.6K
8.2K
R-ch
Q711
R719 C734
R711 L-ch
8.2K RN1444 A
0.1 5.6K
C733
0V
0.1
12 11 10 1.83V
9 8 7 6 5 4 3 2 1
RI LI C713 1
0V
C712
100P
(CH)
VEE VCC
R715
13 14 15 16 17 18 19 20 21 2 2 23 24
100K
R703
R716
100K
100K
C702
C714
10/6.3
R701 1
C704 C701 100
47/6.3 10/6.3
R728
1K
C731
0.22
R729
2.7K
C762 L-ch C721
2.2
3.3/10
R-ch
C754
C722
R730
1 3.3/10
2.7K
4 3 2 1
C492
L491 D494
1
22 23 24
33
MA8075M
C761
R765 R767
C491
2.2
15 4.7
0.1
L-ch
R-ch
R768
R766 R492
15 4.7
1K
C766 C765
0.22
0.22
D492
MA8075M
Q461
2SD1819AS
R460
0V 68K
0.6V
R462
0V
27K
Q801
R809 R801
2SJ520TL
R814
1 1.1A
10K IC802
4.5V
2.9V
HN1C01FU
4.5V
TRANSISTOR
R811
3.4V
3.9V
1
R807
+B
3 2 1
1 6 R812
22K
2 5 10K
3 4
4 5
R813 C804
3.9V
10K 0.1
4.5V
4.5V
0V
1 1
Q803
0V 3
UN5213 C801
2 2
C803
C802 1
IC801
0.1 IC803
0.01
62RP2002 S80819LN
2.0V REGULATOR
4 3 RESET IC
2
5
IC809
6 1
RN4904
R818
DIGITAL TRANSISTOR
3.3M
IC251
FTD2017
C818
N-ch MOS FET
0.1
5 G2 G1 4
6 S2 S1 3
7 S2 S1 2
8 D D 1
IC892
2.1V 0V
Q250
HN1C01FU
R293
2SA17457
TRANSISTOR
2.2K
1.6V
3 4
R294
2 5
R295
100K
R296
1 6
IC253 100K 100K
R281
IC257
RN4904
22K
R292
1 6 S80808LN
100K
2
5
1 OUT
3 4 VSS
Q257
0V
2 VDD
2SA1832 GR
R256 0V
R291
C291
56K
5.4V
100
1
RESET
-1.15V
5.1V -1.6V
R254
R255
C253 22K R257
4.7K
27K
0.1 C252
1 6
0.1
2
5
IC258 R253
3 4
8 7 6 5 R252
HN1C01FU 39K
150K
1 6 D251
1SS400
2 5
3 4
R250
1 2 3 4
R271
100
IC260 R251
68K
RN4904
100
C254
R261
0.1
R270
1K
68K
R262
R263
R266
68K 68K
56K
C255
0.1
R267
10K
R269
30K
11
J701
R718
OPTICAL/
1K
LINE IN
7
C715 TP706 VCC
9
0.1 Vout
TP708
8
GND
R713
TP707
6
N.C.
TP701
10K
1
L702
TP702
L
2
L703
TP703
R
3
TP704 GND
4
L704
5
R714 TP705
Q721
10K 2SD1979S
4.5V
3.9V
R725
R726
100
39K
4.5V
C726
C725
3.3/10
3.3/10
J702
R724 MIC IN
6.8K
TP714
4
TP713
2
TP712
3
TP711
C723 1
0.001 C724
0.001
Q721:RIPPLE FILTER
TP726
6
TP725
5
TP729 TP722
2
TP724
4
TP723
3
TP721
1
TP727
7
TP728 8
J703
REMOTECONTROL
/HEADPHONES
J801
D801
DC IN
F05J2L L800
1
R802 TP805 TP801
N.C.
2
560
TP802
4.5V
3
R803
L801
1.2K
Q891
2SA1873GR
R806
56K
R808
OUT 4
1
VSS
3
VDD
R810
1
BATTERY
TERMINAL,+
VCCBATT
TP803
TP804
BATTERY
TERMINAL,-
4
3
R272
100
3 2 1
4 5 6
IC256
RN4911
DIGITAL
TRANSISTOR
12