Hytera MD78X Service Manual

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
1.3V < EN <7V
10uH_30%_2.5A_47mΩ
15UH_20% 3300mA_0.038Ω
ROSS
POWER
MD780 U1
9V3
1V6D
3V3A
3V3D
EXT_SWB+
1V8D
5VD 3V3D
3V3DP
B+
3V3D
3V3D
3V3D
5VA
9V3A
9V1A_RX
5VA_FGU
3V3A_FGU
9V3
3V3D
3V3D
IGN_SENSE_IN
/PRST
PWB_IN
PWR_ON
EMERGENCY_IN
PWR_ON
RX
EMERGENCY
PWB
VOTG_DET
PWR_ON
RST_CTRL
PWR_CTRL_594
PWR_ON
Model Name:
Prepare:
File No.:
Rev:
Date:
Page:
of
Part Name:
Hytera Communications Co.Ltd.
Check:
Approve:
L
814
Sunday, April 10, 2016
Model Name:
Prepare:
File No.:
Rev:
Date:
Page:
of
Part Name:
Hytera Communications Co.Ltd.
Check:
Approve:
L
814
Sunday, April 10, 2016
Model Name:
Prepare:
File No.:
Rev:
Date:
Page:
of
Part Name:
Hytera Communications Co.Ltd.
Check:
Approve:
L
814
Sunday, April 10, 2016
C997 0.22uFC997 0.22uF
R972
2.2k
R972
2.2k
C960
NC
C960
NC
DTC114EE
Q913
DTC114EE
Q913
3
2
1
R984 220R984 220
R964
2.2K 1%
R964
2.2K 1%
R978 2.7kR978 2.7k
R948
100
R948
100
R971 2.74K 1%R971 2.74K 1%
-
+
+
-
B
A
A OUT
B OUT
A- A+
B+
B-
V+
V-
U914
-
+
+
-
B
A
A OUT
B OUT
A- A+
B+
B-
V+
V-
U914
1 2 3 45
6 7 8
R954 1KR954 1K
Q921
PZT2222A
Q921
PZT2222A
1
23 4
D914
BAS16XV2T1G
D914
BAS16XV2T1G
2 1
C925
1u
C925
1u
Q908Q908
3
2
1
C969
0.1u
C969
0.1u
D103D103
2 1
C962
1u
C962
1u
C958
0.1u
C958
0.1u
C957
10uF/25V
C957
10uF/25V
C933
22uF/25V
C933
22uF/25V
L906L906
1 2
D6204D6204
1
2
3
C983
1uF
C983
1uF
Q916Q916
1
2 3
M11M11
1
R913
4.7K
R913
4.7K
U900U900
VDD
1
GND
2
CE
3
NC
4
VOUT
5
+
C951
220uF/10V
+
C951
220uF/10V
12
C920
0.01uF
C920
0.01uF
U901U901
VDD
1
GND
2
CE
3
NC
4
VOUT
5
C955
0.1u
C955
0.1u
R93220k R93220k
C956 10uF/25VC956 10uF/25V
U910U910
VOUT
1
VSS
2
VIN
3
VSEN
4
CD
5
Q905
UMC4(NTR)
Q905
UMC4(NTR)
1
2
3 4
5
C109
NC
C109
NC
C901
1u
C901
1u
DTC114EE
Q903
DTC114EE
Q903
3
2
1
U906U906
MR
1
VCC
2
GND
3
PFI
4
PFO
5
WDI
6
/RST
7
WDO
8
M13M13
1
L902L902
B901B901
Q910Q910
1
2 3
C919
22uF/6.3V
C919
22uF/6.3V
R969
47k
R969
47k
D911D911
1 2
U918U918
Vin
4
Vss
2
CE
3
Nc
1
Vout
5
D918D918
1 2
U915U915
Vin
4
Vss
2
CE
3
Nc
1
Vout
5
R930
10k
R930
10k
C921
0.1uF
C921
0.1uF
U911U911
VDD
1
GND
2
CD
3
OUT
4
+
C903
470uF/25V
+
C903
470uF/25V
12
R977
NC
R977
NC
R946
1K
R946
1K
DTC114EE
Q922
DTC114EE
Q922
3
2
1
R9104.7K R9104.7K
C942
330PF
C942
330PF
R961
330
R961
330
U907U907
RESET
1
GND
2
RESET
3
WDI
4
VCC
5
R955 180kR955 180k
C926
10uF/10V
C926
10uF/10V
C984
1000pF
C984
1000pF
R901 1R901 1
C944
1000p
C944
1000p
Q912Q912
3
2
1
R911 10k/FR911 10k/F
R906
47k
R906
47k
U909U909
VDD
1
GND
2
CE
3
NC
4
VOUT
5
R922 NCR922 NC
C980
10uF/25V
C980
10uF/25V
Q920
D45H8G
Q920
D45H8G
1
3 2
DTC114EE
Q923
DTC114EE
Q923
3
2
1
C91522uF/10V C91522uF/10V
R987 0R987 0
M8M8
1
R963
0
R963
0
C963
0.1u
C963
0.1u
R953
10
R953
10
L904L904
R934
51K
R934
51K
M10M10
1
C932
2.2u
C932
2.2u
L940L940
1 2
M12M12
1
R980 100kR980 100k
L903
4.7uH
L903
4.7uH
Q902Q902
1
3 2
R917
330K 1%
R917
330K 1%
R937
4.7K
R937
4.7K
Q909Q909
1
3 2
D915
1SS372
D915
1SS372
3
1 2
R949
47K
R949
47K
L900
BLM41PG600SN1
L900
BLM41PG600SN1
1 2
C9461u C9461u
R958
680
R958
680
C922
56pF
C922
56pF
R974 2.7kR974 2.7k
C914
22u/25V
C914
22u/25V
D917D917
1 2
L908L908
R931
47K
R931
47K
C911
0.1uF
C911
0.1uF
C934
2.2uF/10V
C934
2.2uF/10V
R952 33kR952 33k
M9M9
1
C961
0.1uF
C961
0.1uF
C966
1u
C966
1u
C936100pF C936100pF
R970 1kR970 1k
C108
NC
C108
NC
F900F900
C945
470p
C945
470p
Q914Q914
3
2
1
R929
100
R929
100
C9070.1uF C9070.1uF
R908
4.7K
R908
4.7K
R982 100kR982 100k
R941
1k
R941
1k
R945
10K
R945
10K
C935
0.1u
C935
0.1u
C912
2.2u/25V
C912
2.2u/25V
C979
0.1u
C979
0.1u
C924
1u
C924
1u
U903U903
Vin
4
Vss
2
CE
3
Nc
1
Vout
5
R968 2.2kR968 2.2k
R975
20K
R975
20K
D902
B340A
D902
B340A
1 2
C965
2.2u
C965
2.2u
U905U905
Vin
4
Vss
2
CE
3
Nc
1
Vout
5
L901L901
R959
47k
R959
47k
R979 10kR979 10k
R924
1K
R924
1K
TP4035TP4035
C908
1u
C908
1u
R942
4.7K
R942
4.7K
M7M7
1
R6004
3.3k/F
R6004
3.3k/F
C918
22p
C918
22p
R951 33kR951 33k
B900B900
R956
180K
R956
180K
R962
0
R962
0
C950
0.1u
C950
0.1u
U919U919
VIN
1
LBO
2
GND
3
PG
4
FB
5
LBI
6
SYNC
7
EN
8
SW
9
PGND
10
R919
150K 1%
R919
150K 1%
R965 0R965 0
L930L930
R986
0
R986
0
U902U902
BOOT
1
NC1
2
NC2
3
VSENSE
4
EN
5
GND
6
VIN
7
PH
8
PowerPAD
9
D922D922
12
C927
0.1u
C927
0.1u
R938
10K
R938
10K
R943
47k
R943
47k
D910D910
12
D237
MMBZ6V8ALT1G
D237
MMBZ6V8ALT1G
U917U917
OUT
1
VDD
2
GND
3
NC
4
NC1
5
C982
0.1u
C982
0.1u
C91710uF/16V C91710uF/16V
L931
4.7uH
L931
4.7uH
R940
22K
R940
22K
C928
10uF/25V
C928
10uF/25V
C978
0.1u
C978
0.1u
C948
0.1uF
C948
0.1uF
R947
1k
R947
1k
R966
150
R966
150
TP4031TP4031
C905
1u
C905
1u
C923
1u
C923
1u
R950
10K
R950
10K
R976 0R976 0
C906
1u
C906
1u
C902
22p/50V
C902
22p/50V
L916L916
1 2
TP4032TP4032
C981
10uF/25V
C981
10uF/25V
C947
0.1uF
C947
0.1uF
D410D410
R985 0R985 0
TP30TP30
1
R983 0R983 0
C910
1000p
C910
1000p
C968
0.1u
C968
0.1u
C952 0.01UC952 0.01U
R957 1KR957 1K
C938
22u/25V
C938
22u/25V
D241D241
1 2
C900
1u
C900
1u
D900D900
1 2
R925 4.7KR925 4.7K
R944
22K
R944
22K
R98110k R98110k
Q906Q906
1
2 3
MD78X/MD78XG Schematic Diagram (Power Circuit)
69

Hytera MD78X Specifications

General

Brand	Hytera
Model	MD78X
Category	Radio
Language	English