DP770 Service Manual
Page 84 of
102
DEFLDO1 DEFLDO2 VLDO1 VLDO2
0
1.2 V 3.3 V
0
1
0
0
1
1
2.8 V 3.3 V
1.2 V 1.8 V
1.8 V 3.3 V
1
PIN
LEVEL VOLTAGE
DEFDCDC1
DEFDCDC1
DEFDCDC1
DEFDCDC1
DEFDCDC1
DEFDCDC1
DEFDCDC2
DEFDCDC2
DEFDCDC2
DEFDCDC2
DEFDCDC2
DEFDCDC2
DEFDCDC3
DEFDCDC3
DEFDCDC3
DEFDCDC3
DEFDCDC3
DEFDCDC3
Q903
DTC114EE
TP902
TP
+
C904
47uF/35V
C915
10uF
C910
NC
1000pF
C927
L902
10uH
R925
10k
R929
10k
R919
10k
R909
3.3K
FB901
0R
C901
4.7pF
1
2
D901
PESD12VS1UB
1
2
D906
PESD5V0S1UB
C938
10pF
R921
10k
L901
10uH
R910
10K
R926
0R
R902
BLM21PG221SN1D--
C912
0.1uF
0.
1uF
C906
1000pF
C936
1
DEFDCDC3
2
VDCDC3
3
PGND3
4
L3
5
VINCDDC3
6
VINDCDC1
7
L1
8
PGND1
9
VDCDC1
10
DEFCDCD1
11
HOT_RESETN
12
DEFLDO1
13
DEFLDO2
14
VSYSI
N
15
VBACKUP
16
VRTC
17
AGND2
18
VLDO2
19
VI
NLDO
20
VLDO1
/LOWBAT
21
LDO_EN
22
DCDC3_EN
23
DCDC2_EN
24
DCDC1_EN
25
TRESPWRON
26
/RESPWRON
27
/INT
28
SDAT
29
SCLK
30
/P
WR
F
A
IL
31
DEFDCDC2
32
VDCDC2
33
PGND2
34
L2
35
VI
NDCDC2
36
VCC
37
PW
RFAI
L_SNS
38
LOW
BAT_SNS
39
AGND1
40
PW
RPAD
41
U902
TPS65023
100pF
C926
R920
10k
R923
10k
2
1
F901
2.5A-32V
100pF
C934
100pF
C929
1000pF
C933
R913
4.7k
FB905
BLM18PG181SN1
+
C922
22uF
R922
10K
+
C905
22uF
C921
2.2uF
C919
1uF
Q904
MMBT3904
100pF
C931
+
C902
47uF/35V
1
PGND
2
VIN1
3
VIN2
4
EN
5
SYNC
LBO
6
7
LBI
8
VINA
9
AGND
FB
10
11
GND1
12
GND2
PG
13
SW2
14
SW1
15
16
PGND1
17
PW
RPAD
U901
TPS62110
1
2
3
D904
DAN222
R914
4.7k
TP903
TP
+
C918
22uF
R907 12K
R927
0R
R932
BLM21PG221SN1D--
R911
10R
21
D905
MMSZ4678T1G
C911
10uF/10V
C916
1000pF
10pF
C925
R930
NC
C923
10uF
R906
150k
C907
1uF
1000pF
C939
100pF
C937
R904
510k
R912
10K
FB907
BLM18PG181SN1
R915
10K
R917
10k
12
D903
1SR154-400
1
2
D902
PESD12VS1UB
+
C913
22uF
C909
100pF
C935
10pF
1000pF
C930
Q901
ST2301
R924
10k
R916
10k
C903
10pF
R908 47K
1
2
J901
BAT-PD700
R903
2K
10pF
C928
10pF
C932
C908
0.1uF
R928
100K
Q902
2SK1824
L904
10uH
C920
0.1uF
C917
10uF
C1064
0.1uF
+
C914
22uF
+
C924
NC
R901
100R
R918
10k
R905
1K
1
2
D907
PESD3V3S1UB
L903
10uH
FB906
BLM18PG181SN1
R19
NC
R20
NC
R21
NC
R14
0R
Q3
NC
TP
2
TP
TP
3
TP
+
C1
22uF
TP
4
TP
TP
5
TP
TP
6
TP
TP
7
TP
TP
8
TP
TP
9
TP
+
C2
47uF/35V
VCC_5V0
VCC_1V2
LDO_3V3
VCC_1V8
VCC_5V0
VCC_5V0
LDO_3V3
VCC_3V3
VCC_5V0
IO_3V3
VCC_5V0
VCC_5V0
LDO_3V3
LDO_3V3
LDO_3V3
LDO_3V3
VCC_5V0
VCC_5V0
VCC_5V0
VCC_3V3
VCC_5V0
VCC_5V0
VCC_5V0
VCC_3V3
BAT_7V5
LDO_3V3
SD_3V3
POWER
SYS_RESET
I2C0_SCL
I2C0_SDA
PWR-SW-
PWR-SW+
POWER_KEY_DET
DCDC3_EN
DEFDC1
DEFDC3
DEFLDO1
DEFDC2
DCDC1_EN
DCDC2_EN
DEFLDO2
VCC_3V3
POWER_CTL
POWER_CTL
PWR-SW+
PWR-SW-
Summary of Contents for DP770
Page 1: ......
Page 70: ...DP770 Service Manual Appendix Figure 1 DP770 UHF Main Board Top Side PCB View Page 69 of 102 ...
Page 72: ...DP770 Service Manual Appendix Figure 3 DP770 UHF Keypad Top Side PCB View Page 71 of 102 ...
Page 73: ...DP770 Service Manual Appendix Figure 4 DP770 UHF Keypad Bottom Side PCB View Page 72 of 102 ...
Page 87: ...DP770 Service Manual Appendix Figure 7 DP770 VHF Main Board Top Side PCB View Page 86 of 102 ...
Page 89: ...DP770 Service Manual Appendix Figure 9 DP770 VHF Keypad Top Side PCB View Page 88 of 102 ...
Page 90: ...DP770 Service Manual Appendix Figure 10 DP770 VHF Keypad Bottom Side PCB View Page 89 of 102 ...