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SS-US501/SW-US501/UZ-US501
5-6.
SCHEMATIC DIAGRAM – DIGITAL Board (2/5) – •
(2/5)
A1
A2
A3
R105
1k
898
R106
1k
899
900
801
802
(Page 13)
DI
CL
R826
100
C801
0.1
CE
820
822
XMODE
824
A4
(Page 15)
See page 11 for Waveform.
• See page 26 for IC Pin Function Description.
Q801
DTA114TKA-T
R897
D806
R896
R895
100k
1SS355
100k
47k
R898
470k
Q802
2SC2712
SIRCS
BUFFER
Q803
Q801,803
2SC2712
KEY ACTIVE
SWITCH
R899
1k
R844
1k
R845
1k
R104
100k
806
R846
100
807
R847
100
808
R848
100
811
R849
100
812
R850
100
813
R851
100
814
R852
100
815
R853
100
816
SYSTEM CONTROLLER
817
R854
1k
µPD703033BYGF
R855
1k
R856
100
R857
1k
R107
1k
R858
1k
R859
1k
827
R860
1k
828
R861
1k
829
R862
1k
R863
C818
1k
1
R866
10k
C805
0.1
R108
C804
1k
0.001
R867
RESET SIGNAL
1M
R865
C815
10k
0.22
GENERATOR
Q804
X801
IC803
2SC2712
16MHz
PST592C
RESET
SWITCH
C882
R864
D805
0.01
47k
1SS355
C819
C807
R872
1
0.1
100
50V
R888
10k
R894
100k
R887
10k
(EXCEPT US)
R892
R891
100k
100k
R890
47k
(US)
R825
1k
R886
100k
R885
100k
R884
100k
R883
100k
STND
R882
1k
R881
1k
R880
1k
HP S/W
IC802
-M53-3BA-A
R879
100
R878
1k
R877
1k
R876
1k
R875
1k
R874
100
C870
C809
C810
0.22F
0.1
0.1
5.5V
R868
R869
100
100
FB805
C806
D808
R870
+3.3V REGULATOR
0.1
1SS355
100
IC804
S-81233SGY
C803
C808
C827
FB809
220
0.22F
0.1
10V
5.5V
C880
D820
C886
FB804
1
1SS355
0.1
(Page 16)
14
14
HP.L
A-GND
HP.R
HP S/W
856
855
854
853
SIRCS
APC
VR
KEY
STND
PWR
L802
1µH
PWR
FB807
870
FB806
869
L801
1µH
868
APC
R889
10k
R843
862
Q821
SRA2203S/F
Q821,822
MUTING
CONTROL
SWITCH
856
R120
100k
855
Q822
2SC2712
854
853
C802
22
25V
(EXCEPT US)
FB803
FB801
R871
D811
D812
D803
100
1SS355
1SS355
1SS355
D802
1SS355
FL802
(US)
D822
1SS355
R873
0
C845
C820
22
0.1
25V
829
828
5.6V UNSW FOR SUB
827
HEAD PHONE BUS
HP MUTE
(Page 17)
CN801
21P
HP.L
GND
HP.R
HP.SW
HP-MUTE
LCD-CS
LCD-C/D
LCD-DATA
LCD-CLK
SIRCS
APC LED
V/R
KEY
(Page 19)
STAND BY LED
POWER ON LED
STAND BY 5.6V
BACK LIGHT
D-3.3V
GND
READY 3.3V
GND(SHIELD)
1k
AU 15V S/W
SW-MUTE
SL, SR, C-MUTE
FL,FR-MUTE
(Page 17)
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