Hytera MD78X Service Manual page 358

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5VD
UP
D1
D1
DOWN
P4
D5
D5
p3
B
R1
R1
33
33
U5
U5
5VD
POWER IC
POWER IC
L1
L1
4
Vin
BLM18PG300SN1
BLM18PG300SN1
2
Vss
C13
C13
1uf
1uf
3
CE
U6
U6
5VD
POWER IC
POWER IC
L3
L3
4
Vin
NC(BLM18PG300SN1)
NC(BLM18PG300SN1)
2
Vss
C17
C17
1uf
1uf
3
CE
A1
A1
ANTENNA
ANTENNA
1
2
R28
R28
0
0
R30
R30
0
0
C25
C25
C26
C26
NC
NC
NC
NC
A
2
MD78X/MD78XG Schematic Diagram (Front Panel)
5VD
5VD
5VD
5VD
MENU
R4
R4
R3
R3
R2
R2
R5
R5
56
56
56
56
56
56
56
56
p1
BACK
p2
D8
D8
D9
D9
KAA-3528RG
KAA-3528RG
KAA-3528RG
KAA-3528RG
R7
R7
R8
R8
33
33
33
33
D11
D11
D12
D12
KAA-3528RG
KAA-3528RG
KAA-3528RG
KAA-3528RG
3
Q1
Q1
R12
R12
2
Q2
Q2
2
DTC114EE
DTC114EE
3
2SK1824
2SK1824
1
RED
Q3
Q3
DTC114EE
DTC114EE
1
3V3A
5
R23
R23
0
0
Vout
C14
C14
1uf
1uf
1
Nc
1V8A
5
R24
R24
NC
NC
S1
S1
Vout
SKQMBBE010
SKQMBBE010
C18
C18
1
2
nc(1uf)
nc(1uf)
470PF
470PF
1
C19
C19
Nc
3V3A
TP25
TP25
TP26
TP26
10K
10K
10K
10K
R25
R25
R26
R26
TP
TP
TP
TP
S2
S2
PF1
PF1
U7
U7
1
4
5
S1
S2
R27
R27
0
0
1
A
A
2
3
C
B
B
R29
R29
0
0
S8
S8
E27
E27
C23
C23
C24
C24
PF1
PF1
W1
W1
0.1uf
0.1uf
0.1uf
0.1uf
1
FIXER
FIXER
3V3A
R36
R36
R35
R35
R34
R34
R33
R33
J4
J4
ACC_I00
10K
10K
10K
10K
10K
10K
10K
10K
PTT
HANDSET_AUDIO
CS2_LCD
USB_D-
MIC_GROUND
F_A1_LCD
USB_VBUS
INT_MIC
WE_LCD
USB_D+
HOOK
OE_LCD
ACC_IO1
CON10_MMP
CON10_MMP
2
3V3A
C1
C1
C3
C3
100pf
100pf
0.1uf
0.1uf
R6
R6
U2
U2
EMI FILTER
EMI FILTER
10K
10K
U1
U1
C1
A
Y1
X1
LOGIC IC
LOGIC IC
C2
B
Y2
X2
15
11
C3
Q0
SHCP
Y3
X3
1
12
C4
Q1
STCP
Y4
X4
2
10
C5
Q2
SHR
Y5
X5
3
13
C6
PRST
Q3
STR
Y6
X6
4
Q4
C4
C4
D10
D10
5
Q5
0.1uf
0.1uf
6
14
MMBZ5V6ALT1G
MMBZ5V6ALT1G
Q6
DS
J2
J2
7
Q7
17
18
9
DB7
DB8
Q7S
16
19
DB6
DB9
15
20
DB5
DB10
14
21
DB4
DB11
13
22
DB3
DB12
R10
R10
33
33
12
23
DB2
DB13
11
24
DB1
DB14
1V8A
10
25
DB0
DB15
33
33
9
26
RD
DB16
8
27
WR
DB17
R13
R13
7
28
RS
RESET
6
29
CS
IM3
R17
R17
33
33
NC
NC
5
30
R18
R18
0
0
FLM
IM0
2
3V3A
4
31
IOVCC
LED_A
3
32
VCI2
LED_K1
2
33
VCI1
LED_K2
C6
C6
1
34
C9
C9
GND
LED_K3
100p
100p
36
35
0.1uf
0.1uf
GND2
GND1
C10
C10
FPC CONNECTER
FPC CONNECTER
TP20
TP20
TP21
TP21
TP22
TP22
TP23
TP23
TP24
TP24
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
J3
J3
SPKR
SPKR
SPKR-
SPKR+
C20
C20
470pf
470pf
C21
C21
470pf
470pf
C22
C22
S3
S3
S4
S4
S6
S6
S5
S5
PF1
PF1
PF1
PF1
PF1
PF1
PF1
PF1
470pf
470pf
2
1
2
1
2
1
2
1
P3
P6
MEMU
UP
BACK
S9
S9
S10
S10
S11
S11
S12
S12
PF1
PF1
PF1
PF1
PF1
PF1
PF1
PF1
2
1
2
1
2
1
2
1
P5
p2
p1
DOWN
P4
C28
C28
C27
C27
470pf
470pf
470pf
470pf
D14
D14
D15
D15
D16
D16
MMBZ5V6ALT1G
MMBZ5V6ALT1G
MMBZ5V6ALT1G
MMBZ5V6ALT1G
MMBZ5V6ALT1G
MMBZ5V6ALT1G
R31
R31
C32
C32
C33
C33
C31
C31
470pf
470pf
470pf
470pf
0
0
470PF
470PF
1
2
3
4
5
6
7
8
9
10
5VD
U8
U8
R32
R32
10k
10k
4
2
D21
D21
VCC
IO1
MMBZ6V8ALT1G
MMBZ6V8ALT1G
1
3
GND
IO2
PRTR5V0U2X
PRTR5V0U2X
345
1
M1
M1
M2
M2
M3
M3
M4
M4
TP1
TP1
TP10
TP10
TP11
TP11
TP4
TP4
TP5
TP5
TP12
TP12
TP13
TP13
TP2
TP2
TP6
TP6
TP3
TP3
TP7
TP7
TP14
TP14
TP15
TP15
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
A1
UART2_RXD
A2
UART2_TXD
A3
A4
U3
U3
A5
EMI FILTER
EMI FILTER
A6
C1
A1
Y1
X1
C2
A2
Y2
X2
C3
A3
Y3
X3
R9
R9
33
33
C4
A4
Y4
X4
C5
A5
Y5
X5
C6
A6
Y6
X6
U4
U4
EMI FILTER
EMI FILTER
C1
A1
Y1
X1
C2
A2
Y2
X2
C3
A3
Y3
X3
R11
R11
C4
A4
Y4
X4
C5
A5
Y5
X5
R14
R14
C6
A6
3V3A
Y6
X6
1V8A
R15
R15
0
0
R16
R16
NC
NC
R19
R19
0
0
C5
C5
R20
R20
10
10
100p
100p
R21
R21
10
10
C7
C7
C8
C8
R22
R22
10
10
0.1uf
0.1uf
100p
100p
C11
C11
C12
C12
100p
100p
100p
100p
100p
100p
Q4
Q4
2
2SK1824
2SK1824
TP18
TP18
TP19
TP19
TP
TP
TP
TP
D13
D13
MMBZ20VALT1G
MMBZ20VALT1G
C16
C16
C15
C15
0.01uf
0.01uf
0.01uf
0.01uf
SPKR1-
2
SPKR1+
1
KB_C0
KB_C1
KB_C2
KB_C3
KB_R0
KB_R1
KB_R2
2
S7
S7
SKQMBBE010
SKQMBBE010
1
2
TP29
TP29
TP27
TP27
TP
TP
TP
TP
TP28
TP28
2
TP
TP
C29
C29
C30
C30
470pf
470pf
470pf
470pf
D17
D17
D18
D18
D19
D19
D20
D20
MMBZ5V6ALT1G
MMBZ5V6ALT1G
MMBZ5V6ALT1G
MMBZ5V6ALT1G
MMBZ20VALT1G
MMBZ20VALT1G
MMBZ5V6ALT1G
MMBZ5V6ALT1G
C37
C37
C36
C36
C34
C34
C35
C35
470pf
470pf
470pf
470pf
470pf
470pf
470pf
470pf
TP30
TP30
TP31
TP31
TP32
TP32
TP33
TP33
TP34
TP34
TP35
TP35
TP36
TP36
TP37
TP37
TP38
TP38
TP39
TP39
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
TP
1
5VD
TP8
TP8
TP16
TP16
TP9
TP9
TP17
TP17
TP
TP
TP
TP
TP
TP
TP
TP
D3
D3
MMBZ6V8ALT1G
MMBZ6V8ALT1G
C2
C2
100pf
100pf
J1
J1
PRST
CLOCK
25
S/P_CLOCK
CSLED
24
S/P_CSLED
DATA
26
S/P_DATA
CS2_LCD
29
CS2_LCD
F_A1_LCD
30
F_A1_LCD
WE_LCD
28
WE_LCD
OE_LCD
27
OE_LCD
F_D0
38
F_D0_LCD
F_D1
37
F_D1_LCD
F_D2
36
F_D2_LCD
F_D3
35
F_D3_LCD
F_D4
34
F_D4_LCD
F_D5
33
F_D5_LCD
F_D6
32
F_D6_LCD
F_D7
31
F_D7_LCD
33
33
PRST
16
PRST
10
UART2_RXD
UART2_RXD
11
NC(47)
NC(47)
UART2_TXD
UART2_TXD
39
GND
15
5VD
14
SPKR1-
13
SPKR1+
PWB_IN
40
PWB_IN
17
KB_C0
18
KB_C1
19
KB_C2
20
KB_C3
21
KB_R0
22
KB_R1
23
KB_R2
ACC_IO1
3
ACC_IO1
PTT
6
PTT_MMP
HANDSET_AUDIO
12
HANDSET_AUDIO
USB_D-
7
USB_D-
MIC_GROUND
2
MIC_GROUND
USB_VBUS
4
USB_VBUS
INT_MIC
1
INT_MIC
USB_D+
8
USB_D+
HOOK
5
HOOK_MMP
ACC_IO2
9
ACC_IO2
CON40_MAIN
CON40_MAIN
B
A
V1.0

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