Hytera MD78X Service Manual

2
2
1
1
B B
A
A
BACKLIGHT
p2 p1 DOWN
UP
P3
P4
RED
GRN
on\off
P6
P5
BACKMEMU
Emergency
5O ohm matching
P2
BACK
DOWN
C0
R2
R0
R1
P3
P1
UP
C1
C2
P5
EM
p4
SW
C3
P6
MENU
MD78X CONTROL BOARD (J)
MD78X
CONTROL BOARD
Ross
CSLED
ACC_IO1
PTT
HANDSET_AUDIO
USB_D-
USB_VBUS
INT_MIC
USB_D+
HOOK
ACC_IO2
F_D3
F_D5
F_D6
F_D7
PRST
KB_C3
KB_C2
KB_C1
SPKR1+
SPKR1-
OE_LCD
WE_LCD
F_A1_LCD
CS2_LCD
F_D0
F_D2
CLOCK
DATA
MIC_GROUND
KB_C0
PWB_IN
F_D1
F_D4
KB_R2
KB_R1
KB_R0
CS2_LCD
F_A1_LCD
WE_LCD
OE_LCD
3V3A
5VD
5VD
3V3A
5VD
5VD
3V3A
3V3A
5VD
1V8A
5VD
1V8A
1V8A
3V3A
5VD
3V3A
5VD
5VD
A
B
UART2_RXD
UART2_TXD
PRST
PRST
A
B
UART2_RXD
UART2_TXD
Model Name:
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TP15
TP
TP15
TP
TP30
TP
TP30
TP
TP11
TP
TP11
TP
Q4Q4
2
31
C16
270pF
C16
270pF
R39
270
R39
270
TP14
TP
TP14
TP
C67
470pF
C67
470pF
C3
0.1uF
C3
0.1uF
C37
470pF
C37
470pF
R19 0R19 0
L1L1
TP29
TP
TP29
TP
R7
270
R7
270
C71
470pF
C71
470pF
TP23
TP
TP23
TP
C50
470pF
C50
470pF
R40
270
R40
270
S11
PF1
S11
PF1
1 2
U6U6
Vin
4
Vss
2
CE
3
Nc
1
Vout
5
U2
CM1440
U2
CM1440
X1
A1
X2
A2
X3
A3
X4
A4
X5
A5
X6
A6
Y1
C1
Y2
C2
Y3
C3
Y4
C4
Y5
C5
Y6
C6
GND1
B1
GND2
B2
GND3
B3
TP16
TP
TP16
TP
S12
PF1
S12
PF1
1 2
TP12
TP
TP12
TP
S6
PF1
S6
PF1
1 2
M3M3
1
TP13
TP
TP13
TP
C52
470pF
C52
470pF
R15 0R15 0
U3
CM1440
U3
CM1440
X1
A1
X2
A2
X3
A3
X4
A4
X5
A5
X6
A6
Y1
C1
Y2
C2
Y3
C3
Y4
C4
Y5
C5
Y6
C6
GND1
B1
GND2
B2
GND3
B3
C8
100pF
C8
100pF
Q2Q2
3
1
2
D6D6
12
C30
470pF
C30
470pF
TP17
TP
TP17
TP
TP20
TP
TP20
TP
C56
470pF
C56
470pF
C39
0.047uF(NC)
C39
0.047uF(NC)
R5
270
R5
270
M2M2
1
L2
BLM18PG300SN1
L2
BLM18PG300SN1
C66
4.7uF
C66
4.7uF
D9D9
43 21
C60
470pF
C60
470pF
R27 0R27 0
C12
100pF
C12
100pF
D14D14
1
3
2
C32
470pF
C32
470pF
C45 0.047uF(NC)C45 0.047uF(NC)
U5U5
Vin
4
Vss
2
CE
3
Nc
1
Vout
5
R12 33R12 33
D23D23
1
3
2
A1
ANTENNA
A1
ANTENNA
1 2
3
R45 1kR45 1k
C22
470pF
C22
470pF
C9
0.1uF
C9
0.1uF
C5
100pF
C5
100pF
TP24
TP
TP24
TP
S5
PF1
S5
PF1
1 2
D21D21
1
3
2
D15D15
1
3
2
TP39
TP
TP39
TP
R44 1kR44 1k
D16D16
12
C49
470pF
C49
470pF
S2
PF1
S2
PF1
1 2
C65
4.7uF
C65
4.7uF
R18
0
R18
0
C24
0.1uF
C24
0.1uF
TP19TP19
U1U1
Q1
1
Q2
2
Q3
3
Q4
4
Q5
5
Q6
6
Q7
7
GND
8
Q7S
9
SHR
10
SHCP
11
STCP
12
STR
13
DS
14
Q0
15
VCC
16
C69
470pF
C69
470pF
C27
470pF
C27
470pF
TP10
TP
TP10
TP
D19D19
1
3
2
C20
470pF
C20
470pF
TP36
TP
TP36
TP
U8U8
GND
1
IO1
2
IO2
3
VCC
4
R23 0R23 0
R26
10k
R26
10k
R47
4.7k
R47
4.7k
S10
PF1
S10
PF1
1 2
D17D17
1
3
2
R4
270
R4
270
R8
270
R8
270
C54
470pF
C54
470pF
C28
470pF
C28
470pF
TP28
TP
TP28
TP
TP26
UART2_RXD
TP26
UART2_RXD
C41
0.047uF(NC)
C41
0.047uF(NC)
R42
270
R42
270
C35
470pF
C35
470pF
TP35
TP
TP35
TP
TP33
TP
TP33
TP
R46
270
R46
270
D4D4
12
D8D8
43 21
TP22
TP
TP22
TPR24 NCR24 NC
C43
0.047uF(NC)
C43
0.047uF(NC)
C13
0.1uF
C13
0.1uF
R43 1kR43 1k
D18D18
1
3
2
C63 270pFC63 270pF
TP6
TP
TP6
TP
R41
270
R41
270
C11
100pF
C11
100pF
R31
270
R31
270
R16 NCR16 NC
C4
0.1uF
C4
0.1uF
TP5
TP
TP5
TP
TP31
TP
TP31
TP
C17
1uF(nc)
C17
1uF(nc)
R9 33R9 33
M1M1
1
D13D13
1
3
2
R6
10k
R6
10k
C61
0.1uF
C61
0.1uF
TP7
TP
TP7
TP
TP40
GND
TP40
GND
D20D20
1
3
2
U7U7
S1
4
S2
5
C
2
A
1
B
3
K1
6
K2
7
C53
470pF
C53
470pF
S8
PF1
S8
PF1
1 2
R32
270
R32
270
C48
470pF
C48
470pF
TP8
TP
TP8
TP
D7D7
12
J3
SPKR
J3
SPKR
SPKR-
2
SPKR+
1
R1
270
R1
270
U4
CM1440
U4
CM1440
X1
A1
X2
A2
X3
A3
X4
A4
X5
A5
X6
A6
Y1
C1
Y2
C2
Y3
C3
Y4
C4
Y5
C5
Y6
C6
GND1
B1
GND2
B2
GND3
B3
TP25
UART2_TXD
TP25
UART2_TXD
D24D24
12
TP9
TP
TP9
TP
L3L3
TP1
TP
TP1
TP
C19
470pF
C19
470pF
C57
470pF
C57
470pF
D11D11
43 21
C47
470pF
C47
470pF
C25
NC
C25
NC
C51
470pF
C51
470pF
R20 10R20 10
R37
270
R37
270
S3
PF1
S3
PF1
1 2
R36
10k
R36
10k
C62
470pF
C62
470pF
R38
270
R38
270
C31
470pF
C31
470pF
R25
10k
R25
10k
R21 10R21 10
C23
0.1uF
C23
0.1uF
C44
0.047uF(NC)
C44
0.047uF(NC)
J4J4
ACC_I00
1
PTT
2
HANDSET_AUDIO
3
USB_D-
4
MIC_GROUND
5
USB_VBUS
6
INT_MIC
7
USB_D+
8
HOOK
9
ACC_IO1
10
D3D3
1
3
2
C64 3900pFC64 3900pF
C58
470pF
C58
470pF
D12D12
43 21
C10
100pF
C10
100pF
C38
0.047uF(NC)
C38
0.047uF(NC)
S9
PF1
S9
PF1
1 2
R3
270
R3
270
C46
0.047uF
C46
0.047uF
R33
10k
R33
10k
C29
470pF
C29
470pF
C68
470pF
C68
470pF
C40
0.047uF
C40
0.047uF
TP4
TP
TP4
TP
C36
470pF
C36
470pF
TP27
TP
TP27
TP
R35
10k
R35
10k
C1
100pF
C1
100pF
C26
NC
C26
NC
TP21
TP
TP21
TP
D10
MMBZ6V8ALT1G
D10
MMBZ6V8ALT1G
1
3
2
D22D22
1
3
2
Q3Q3
3
1
2
R14 NC(47)R14 NC(47)
R34
10k
R34
10k
C33
470pF
C33
470pF
S7S7
1 2
C15
270pF
C15
270pF
C21
470pF
C21
470pF
TP38
TP
TP38
TP
R22 10R22 10
R28
0
R28
0
TP18TP18
R2
270
R2
270
M4M4
1
C59
470pF
C59
470pF
C34
470pF
C34
470pF
R10
33
R10
33
S1S1
1 2
TP37
TP
TP37
TP
D1D1
12
C42 0.047ufC42 0.047uf
TP2
TP
TP2
TP
C6
100pF
C6
100pF
J1
CON40_MAIN
J1
CON40_MAIN
INT_MIC
1
MIC_GROUND
2
ACC_IO1
3
USB_VBUS
4
HOOK_MMP
5
PTT_MMP
6
USB_D-
7
USB_D+
8
ACC_IO2
9
SPKR1-
14
SPKR1+
13
HANDSET_AUDIO
12
UART2_RXD
10
UART2_TXD
11
PWB_IN
40
GND
39
PRST
16
5VD
15
KB_C0
17
KB_C1
18
KB_C2
19
KB_C3
20
KB_R0
21
KB_R1
22
KB_R2
23
S/P_CSLED
24
S/P_CLOCK
25
S/P_DATA
26
WE_LCD
28
GND1
41
GND2
42
CS2_LCD
29
F_A1_LCD
30
F_D7_LCD
31
F_D6_LCD
32
F_D5_LCD
33
F_D4_LCD
34
F_D3_LCD
35
F_D2_LCD
36
F_D1_LCD
37
F_D0_LCD
38
OE_LCD
27
C18
1uF(nc)
C18
1uF(nc)
R29 0R29 0
R30 0R30 0
C70
470pF
C70
470pF
TP34
TP
TP34
TP
TP32
TP
TP32
TP
TP3
TP
TP3
TP
C2
0.1uF
C2
0.1uF
D2D2
12
J2
CSZLCM1830
J2
CSZLCM1830
GND
1
VCI1
2
VCI2
3
IOVCC
4
FLM
5
CS
6
RS
7
WR
8
RD
9
DB0
10
DB1
11
DB2
12
DB3
13
DB4
14
DB5
15
DB6
16
DB7
17
DB8
18
DB9
19
DB10
20
DB11
21
DB12
22
DB13
23
DB14
24
DB15
25
DB16
26
DB17
27
RESET
28
IM3
29
IM0
30
LED_A
31
LED_K1
32
LED_K2
33
LED_K3
34
GND1
35
GND2
36
C7
0.1uF
C7
0.1uF
C55
470pF
C55
470pF
Q1Q1
1
32
W1
FIXER
W1
FIXER
R11 33R11 33
S4
PF1
S4
PF1
1 2
R13
NC
R13
NC
C14
0.1uF
C14
0.1uF
D5D5
12
R17
33
R17
33
11. Schematic Diagram
MD78X/MD78XG Schematic Diagram (Front Panel Circuit)
61

Hytera MD78X Specifications

General

Brand	Hytera
Model	MD78X
Category	Radio
Language	English