Sharp XL 1700 - Executive Microsystem Service Manual page 25

+B
A3.3V
C817
818
22P
0K
C818
R821
C824
0.1
8.2K 0.1
9
6
C819
C825
GO
100/10
47/10
10
VREF
C828
0.01
R827
C829
0.033
TEO
5
+B
+B
ZD801
DZ5.1BSB
7
CD SIGNAL
+B
12
13
C835
47P (CH)
R833
R829
5.6K
47K
TMAX 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
R832
150K
0V
17
1.2V
18
LPFN
3.2V
19
LPFO
1.6V
20
PVREF
C832
0V
21 VCOF
0.01
0V
22 AVSS
C833
IC801
0V
23
SLCO
TC94A14F
0.0027 1.6V
24 RFI
3.3V
SERVO/SIGNAL
25
AVDD
10K
1.6V
26 RFCT
CONTROL
1.6V
27 RFZI
7
0.7V
28
RFRP
1.6V
29 FEI
6
0.6V
4 15 14
30
SBAD
1.6V
31
TEI
1.6V
32 TEZI
1
C836
0.033
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
1.6V FOO
TRO
R831
4.7K
C837
11
0.047 C843
0.047
C841
0.1
+B
R835
390K
D801
1N4148
+B
8 9
Figure 25 SCHEMATIC DIAGRAM (4/8)
R848 1K
R849 1K
R870
10K
R841
10K
R842
10K
R843
10K
R844
10K
5V
+B
VDD 5.2V
64
5V
63
RST
4.5V
C860
CCE 62
R850 1K 0.1
5V
61
BUCK
R851 1K
5V
BUS3 60
5V R852 1K
BUS2 59
R853 1K
5V
58
BUS1
R854 1K
5V
BUS0 57
0V
56
-COM
VSS
ZDET 55
C853
0V DVSS 54
10/16
53
LO
16
C856
1.6V
DVR 52
L852
100/16 +B
3.3V
51
DVDD
17 C854 100mA
RO
50
10/16
49
DVSS
0V
L851 100mA
C852 15P (CH)
C858
0.022
C857
100/10
+B
C855
C859
0.022
12P (CH)
C872
0.022
+B
D802
1N4148
C850
47/10
10
– 25 –
XL-1700/1700C
CD_STB
10
CD_RES
9
CCE
8
BUCK
7
BUS3
6
BUS2
5
BUS1
4
BUS0
3
PU_IN
2
GVSW
1
CNP704
R855
1K
DOUT
4
3
GND
2
+B
5V
1
CNP804
CNW803 CORE1
R861
CD_L
1
10K
A_GND
2
R862
CD_R
3
10K
+B CD_7.2V
1
CD_12V
2
CD+B
3
L853
CD_GND
4
100mA
M_GND
5
CNW805
Q808
KTC3199 GR
+B
+B
R863
10
R864
100
2
1
C869
3
Q809
KRA102 M
100/10
2
C870
1
0.022
Q810
3
KRC107 M
D803
1N4148
D804
1N4148
D805
1N4148
1 1
2 2
D806
CNW808
1N4148
11 12
1
2
3
1
2
3
4
5