Hytera MD78X Service Manual page 212

5
D
C815 C815
W= 3mm
220pF 220pF
L= 5.5mm
w=3mm,
L=5.5mm
Z= 8ohm
Z=8
C839 C839
220pF 220pF
C860 C860 C828 C828
NC NC NC NC
L829 L829 L830 L830
0 0 0 0
TP806 TP806
Final_bias Final_bias
Final_bias
C892 C892
C
220p 220p
C869 C869
15pF 15pF
C886 C886 C887 C887
NC NC 220p 220p
C859 C859
15pF 15pF
C854 C854 C853 C853
L819 L819 0.1u 0.1u 220p 220p
W= 3mm w=3mm,
8T/47n 8T/47n
L=3mm
L= 3mm
Z=8
Z= 8 ohm
R826 R826 C866 C866
C867 C867
1 1
NC NC
1
Q804 Q804
MOSFET MOSFET
R828 R828
1 1
C872 C872
47pF 47pF
R829 R829
82 82
B
C881 C881
NC NC
A
5
4
MD78X/MD78XG Schematic Diagram (TX Circuit)
2
C909 C909 C889 C889 C913 C913 C888 C888 C825 C825 C885 C885 L801 L801
C855 C855 47pF 47pF 470p 470p BLM41PG600SN1 BLM41PG600SN1
100p 100p 3300p 3300p 0.018uF 0.018uF 33p 33p
33pF 33pF
2
L803 L803
R812 R812
Gate_1 L804 L804 BLM41PG600SN1 BLM41PG600SN1
NC NC
3T/16nH 3T/16nH
R807 R807 C820 C820
C833 C833
C810 C810 4.7 4.7 12pF 12pF
4pF 4pF
47pF 47pF
R804 R804
4.7 4.7
C8330 C8330 C841 C841
R806 R806 Q802 Q802
22pF 22pF 8pF 8pF
4.7 4.7 MOSFET MOSFET C823 C823
2
10pF 10pF
R813 R813
4.7 4.7
2
C832 C832
Q803 Q803
R818 R818 C842 C842 C831 C831 NC NC
MOSFET MOSFET
4.7 4.7 22pF 22pF 4pF 4pF
C840 C840
R860 R860
47pF 47pF
NC NC
C819 C819 C873 C873 C882 C882
C812 C812
R861 R861 8pF 8pF NC NC NC NC
12pF 12pF
4.7 4.7
Gate_2
C846 C846
33pF 33pF
TP809 TP809
M6 M6 M5 M5 M1 M1 M2 M2 M3 M3 M4 M4
R859 R859 Gate_2
1k 1k R856 R856
51 51
Gate_1
GND
R855 R855
R858 R858 51 51 9V3A
TP808 TP808
9.1k 9.1k
9V3A 9V3A
L802 L802
BLM41PG600SN1 BLM41PG600SN1 Q810 Q810
TRANSISTOR TRANSISTOR
3
C807 C807
10u/25V 10u/25V C829 C829 C845 C845
0.1uF 0.1uF 220p 220p
L820 L820
R877 R877
1uH 1uH
R881 R881
47K 47K
4.7K 4.7K
L827 L827
3
TX R880 R880
39nH 39nH
4.7K 4.7K
C864 C864 1
R830 R830
0 0 L823 L823 18pF 18pF Q811 Q811
C863 C863 TRANSISTOR TRANSISTOR
C809 C809
0 0
4700pF 4700pF 220p 220p
2
R827 R827
C871 C871
C865 C865 270 270
NC NC
24pF 24pF R824 R824 C843 C843 L826 L826
47pF 47pF 470pF 470pF 16pF 16pF
1
Q805 Q805
MOSFET MOSFET
R803 R803
R879 R879
L814 L814 C826 C826 220 220
NC NC
5.6nH 5.6nH 22nH 22nH
R835 R835
82 82
C814 C814
C880 C880 C844 C844
18p 18p
0.047uF 0.047uF NC NC
C878 C878 R845 R845 C877 C877 R846 R846
R844 R844 R843 R843
220p 220p 20K 20K 220p 220p 10K 10K
10k 10k 5.6K 5.6K
C811 C811
L824 L824 L825 L825
470p 470p
BLM18AG601SN1 BLM18AG601SN1 BLM18AG601SN1 BLM18AG601SN1
VGG Final_bias
VGG TP811 TP811
driver driver
3 3
1 1
Q812 Q812 Q813 Q813
2 2
DTC114EE DTC114EE DTC114EE DTC114EE
4
3
B+
1
C916 C916 C930 C930 C931 C931 C940 C940 C943 C943
1
C801 C801 C802 C802 C803 C803 C804 C804
+ +
47u/25V 47u/25V 3300p 3300p 0.018uF 0.018uF 33p 33p 33p 33p 3300p 3300p
1000p 1000p 3300p 3300p 33pF 33pF
C821 C821 C816 C816
NC NC 2p 2p
L807 L807 C817 C817
100nH 100nH 470pF 470pF
C824 C824 C856 C856 C876 C876 C879 C879
L809 L809 L813 L813
NC NC 8pF 8pF NC NC NC NC
L808 L808 3T/16nH 3T/16nH 3T/16nH 3T/16nH
C893 C893
1 2
0 0 470pF 470pF
D801 D801
C834 C834 C870 C870 C874 C874 C835 C835 C836 C836 C837 C837
MA4P1250 MA4P1250
NC NC NC NC NC NC 2pF 2pF 2p 2p 5p 5p
L816 L816
11T/113nH 11T/113nH
L817 L817
C850 C850 3T/16nH 3T/16nH
470p 470p
C851 C851 D802 D802
3p 3p MA4P1250 MA4P1250
R821 R821
L815 L815
33 33
BLM18AG601SN1 BLM18AG601SN1
R825 R825 C861 C861
2 1
33 33 68pF 68pF
C849 C849
NC NC
TP807 TP807
APC APC
RT803 RT803
NC NC
t t
1 2
TV_APC
R900 R900
R847 R847
NC NC 47K 47K
L821 L821
BLM18AG601SN1 BLM18AG601SN1
2 2 1
APC_COMP
C868 C868
0.1u 0.1u R873 R873
L822 L822 R831 R831
NC NC
10k 10k R839 R839
BLM18AG601SN1 BLM18AG601SN1
VGG 3.3K 3.3K
C904 C904
R896 R896
NC NC
47 47 NC NC D805 D805
UDZS5.1B UDZS5.1B
R802 R802
L805 L805
12K 12K C808 C808
22n 22n
220p 220p
TP803 TP803
LO LO
C822 C822
C813 C813 R805 R805 R809 R809
220p 220p
NC NC NC NC 82 82
NC NC
2
TX_LO
R893 R893
R808 R808
C818 C818
Q801 Q801 10 10
R811 R811 15p 15p
TRANSISTOR TRANSISTOR L811 L811 R814 R814 R810 R810
18K 18K
8.2n 8.2n 100 100 100 100
R862 R862
56 56
TP812 TP812
D128 D128
REV_TEMP_OUT REV_TEMP_OUT
R878 R878 R874 R874 1
NC NC 1K 1K
3
9V3A TEMP_DET2
2
R875 R875
R904 R904 DAN222 DAN222
33K 33K
0 0
REV_TEMP_DET
R867 R867
8.2k 8.2k
TEMP_DET
2 1
SW1 SW1
PAD SW PAD SW D129 D129
MA2S077 MA2S077
R905 R905
C898 C898
33K 33K
220p 220p
R868 R868
NC NC
C954 C954 R897 R897
NC NC 470k 470k
TV_APC
R864 R864
470k 470k 5
6
REV_TEMP_DET
R898 R898
470k 470k 7
R899 R899
470k 470k
8
C949 C949
R902 R902
82pF 82pF
C959 C959
0 0
0.1u 0.1u 199
3
2
W801 W801
ANTENNA ANTENNA
TP801 TP801
1
2
Directional Couple Directional Couple
M801 M801
3 4
Fcouple 4
C827 C827
L810 L810
470p 470p
3T/16nH 3T/16nH
1 2
Pin Pout
R815 R815
C830 C830 C838 C838
5 6
5p 5p 3p 3p 27k 27k
5 Rcouple
L833 L833 R848 R848
47pF 47pF NC NC
L832 L832 R840 R840
10nH 10nH NC NC
C848 C848 C847 C847
150p 150p 150p 150p
R816 R816 R817 R817
C852 C852
220 220 220 220
100p 100p R819 R819 R820 R820
82 82 NC NC
D804 D804
C858 C858
RX_in RB706F RB706F
NC NC
C862 C862
3
1.5p 1.5p
R823 R823
100 100
C857 C857 R852 R852 R853 R853
22pF 22pF
470 470 470 470
D803 D803
RB706F RB706F
R822 R822
2
0 0 3
C899 C899
1
120p 120p
R871 R871
R850 R850
NC NC R851 R851
NC NC
NC NC
R834 R834 R836 R836
R832 R832 R833 R833
R841 R841
NC NC NC NC
NC NC NC NC
33k 33k
U801 U801
5 4
R837 R837 R838 R838
C894 C894 0 0 33k 33k
R870 R870
6 3
0.1uf 0.1uf
10K 10K
7 2
R842 R842 C875 C875
8 1
12k 12k 150P 150P
R857 R857
0 0
OPAMP OPAMP
R866 R866
2.2K 2.2K
220pF 220pF
C883 C883
R854 R854 R849 R849
56k 56k 2.2k 2.2k
U802 U802 R887 R887
OPAMP OPAMP 820 820
5 4
R863 R863
R882 R882 0 0
6 3
150k 150k
R865 R865
7 2
R892 R892
R894 R894 R869 R869 39k 39k
C890 C890 82K 82K
8 1
0 0
220p 220p
R872 R872 1k 1k
180k 180k
C895 C895 R895 R895
220p 220p
56k 56k
R886 R886
R884 R884
R888 R888
220k 220k
18k 18k
NC NC
R889 R889 R891 R891 R885 R885 L806 L806
NC NC 0 0 10k 10k 1uH 1uH
C896 C896
220p 220p R883 R883
R890 R890
56k 56k
3.3k 3.3k
R876 R876
C897 C897
56k 56k
220p 220p
U804 U804
OPAMP OPAMP
4
3
2
1
DESIGNER: SHY
APC_COMP
Title Title Title
<Title> <Title> <Title>
R903 R903
C953 C953
NC NC
Size Size Size Document Number Document Number Document Number
18k 18k
C C C <Doc> <Doc> <Doc>
Date: Date: Date: Wednesday, December 08, 2010 Wednesday, December 08, 2010 Wednesday, December 08, 2010
2
1
D
4
3
L828 L828 C884 C884
1uH 1uH NC NC
2
1 C891 C891
120p 120p
C
B
TP810 TP810
TEMP TEMP
RT804 RT804
100k 100k
A
TX
Rev Rev Rev
<RevCode> <RevCode> <RevCode>
Sheet Sheet Sheet 14 14 14 of of of 14 14 14
1