Hytera MD78X Service Manual

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
MD780_U5_800&900MHz
5VA
3V3D
MOD_H
MOD_L_RFCS
DAC_DIN
DAC_SCLK
DAC_FS
TV_APC
Final_bias
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Sunday, April 10, 2016
DAC
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DAC
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DAC
R513
100K
R513
100K
C523
NC
C523
NC
C505
NC
C505
NC
R506
10K
R506
10K
R501
10K
R501
10K
R502
1K
R502
1K
RN500 100*4RN500 100*4
1
2
3
4 5
6
7
8
R568
NC
R568
NC
C504
82PF
C504
82PF
R564 0R564 0
C471
0.1u
C471
0.1u
R508
NC
R508
NC
C518
100P
C518
100P
C501
330p
C501
330p
R505
0
R505
0
C506
0.01uF
C506
0.01uF
R514 100KR514 100K
C513
1000P
C513
1000P
R567 0R567 0
R509 10kR509 10k
C502
3300p
C502
3300p
C517
100P
C517
100P
R512 10kR512 10k
U500U500
DVDD
1
PD
2
LDAC
3
DIN
4
SCLK
5
CS
6
FS
7
DGND
8
AGND
9
REFINCD
10
OUTD
11
OUTC
12
OUTB
13
OUTA
14
REFINAB
15
AVDD
16
C514 0.1UFC514 0.1UF
R503 1KR503 1K
C503
1500PF
C503
1500PF
C509
0.1u
C509
0.1u
R565 0R565 0
R566 0R566 0
R500
100K
R500
100K
R542
NC
R542
NC
L500L500
12
R504 1KR504 1K
C510
100P
C510
100P
C507
0.01uF
C507
0.01uF
C525
NC
C525
NC
C516
100P
C516
100P
R529 33KR529 33K
+
C511
10u/10v
+
C511
10u/10v
12
C512
0.1u
C512
0.1u
L501L501
12
C524
NC
C524
NC
C515 0.1uC515 0.1u
C500
33p
C500
33p
R510 10kR510 10k
C522
NC
C522
NC
+
C508
10u/10v
+
C508
10u/10v
12
R528
68K
R528
68K
C521
NC
C521
NC
R507
0
R507
0
MD78X/MD78XG Schematic Diagram (DAC Circuit)
62

Hytera MD78X Specifications

General

Brand	Hytera
Model	MD78X
Category	Radio
Language	English