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PD78XG
Hytera PD78XG Service Manual
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1
A
A
1V6D
3V3D
1V8D
1V8D
1V6D
1V6DSP
3V3D
3V3D
1V6D
3V3D
3V3DRF
VFLASH
3V3ARF
VFLASH
1V6D
1V6D
1V6DSP
CLK-CODEC
13
PWR-RESET
10
CLK-OPT
7
/RST-OUT
4
CLK-32K-OUT
7
CLK-OMAP/IF
8
PD780 UHF Schematic Diagram(OMAP CORE Circuit)
C201
270P
C201
270P
R201
R201
C212
0.22u
C212
0.22u
TP201
SCLK-IN
TP201
SCLK-IN
1
R204
0
R204
0
C210
0.22UF 10V
C210
0.22UF 10V
R213
0
R213
0
C226
0.22u
C226
0.22u
L204
BLM18PG181SN1
L204
BLM18PG181SN1
C213
1500p
C213
1500p
C208
C208
C231
1500p
C231
1500p
OMAP5912ZZG-1
U201C
OMAP5912ZZG-1
U201C
VSS
Y13
MPU_BOOT
J20
VSS
P12
VSS
A13
VSS
A21
VSS
B1
VSS
B5
VSS
B7
VSS
B16
VSS
F20
VSS
G1
VSS
K2
VSS
K20
VSS
N1
VSS
R21
VSS
U2
VSS
W20
VSS
Y3
VSS
AA1
VSS
AA7
VSS
AA21
CVDD
A15
CVDD
M2
CVDD
Y9
CVDD
Y20
CVDD1
AA3
CVDD2
A3
CVDD2
A9
CVDD2
E2
CVDD3
B13
CVDD3
B20
CVDD3
J21
CVDD3
R20
CVDDRTC
W12
CVDDDLL
A11
CVDDA
Y21
DVDD1
A19
DVDD1
E21
DVDD2
AA2
DVDD3
Y7
DVDD4
A5
DVDD4
A7
DVDD4
B10
DVDD4
B14
DVDD5
C2
DVDD5
H2
DVDD5
R1
DVDD6
AA11
DVDD7
Y16
DVDD8
L21
DVDD9
U21
DVDDRTC
V12
LDO.FILTER
J1
CONF
V18
RTC_ON_NOFF
Y12
OSC32K_OUT
AA13
OSC32K_IN
V13
CLK32K_IN
P13
OSC1_OUT
W3
OSC1_IN
Y2
MPU_RST
U20
PWRON_RESET
R12
MCLK/GPIO24
V5
BCLK/GPIO17
Y15
CLK32K_OUT/GPIO36/MPUIO0/UART1-TX
R13
BFAIL/EXT_FIQ/UART3.CTS
W19
RST_OUT/GPIO41
AA20
SYS_CLK_IN/UART2.BCLK
Y4
R210
33
R210
33
C214
270P
C214
270P
R206
10
R206
10
C206
1000P
C206
1000P
C232
270P
C232
270P
C228
270P
C228
270P
C236
1u
C236
1u
R209
10
R209
10
C215
0.01uF
C215
0.01uF
C224
470P
C224
470P
C230
0.22u
C230
0.22u
C207
C207
R207
33
R207
33
R205
100
R205
100
C229
1u
C229
1u
C203
20P
C203
20P
C209
1500p
C209
1500p
TP268
TP268
1
C205
C205
C227
1500p
C227
1500p
R211
R211
C223
470P
C223
470P
OE/ST
GND
OUT
VDD
X203
DSB321SDA
OE/ST
GND
OUT
VDD
X203
DSB321SDA
1
2
3
4
C218
0.22u
C218
0.22u
C225
470P
C225
470P
R208
33
R208
33
C234
0.22u
C234
0.22u
C220
270P
C220
270P
C211
C211
X201
SSP-T7F 12.5pF 20ppm SEIKO
X201
SSP-T7F 12.5pF 20ppm SEIKO
1
2
3
4
L201
L201
L203
L203
C202
1000p
C202
1000p
C204
20P
C204
20P
C222
1u
C222
1u
C235
1500p
C235
1500p
L202
BLM18PG181SN1
L202
BLM18PG181SN1
C221
0.22u
C221
0.22u
C219
1500p
C219
1500p
R203
10
R203
10
C216
0.22u
C216
0.22u
PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (OMAP CORE)
59
68
70
Table of Contents
Default Chapter
4
Table of Contents
4
Documentation Information
11
1 Introduction
12
2 Product Controls
13
3 Baseband Section
16
Power Section
16
Diagram of Power Control
16
Radio On/Off
16
Figure 3-1 Diagram of Power Control
16
Figure 3-2 Diagram of Radio On/Off Control
16
Power Protection
17
Power Consumption Control
17
Control Section
17
OMAP5912 Dual-Core Processor
17
Figure 3-3 Diagram of OMAP5912
18
Figure 3-4 Diagram of Overall Scheme
18
External Memory
19
Figure 3-5 Diagram of External Memory
19
Clock
20
Figure 3-6 Diagram of Baseband Clock
20
Reset Signal
21
Spi
21
Mcbsp
21
Figure 3-7 Diagram of Reset Signal
21
Figure 3-8 Diagram of SPI Connection
21
Usb
22
Figure 3-9 Diagram of MCBSP Connection
22
Figure 3-10 Diagram of USB Interface
22
Uart
23
I2C
23
Figure 3-11 Diagram of UART Interface Connection
23
Figure 3-12 Diagram of I2C Connection
23
Microwire
24
Mcsi1
24
Audio Section
24
Audio Diagram
24
Figure 3-13 Diagram of MICROWIRE Connection
24
Figure 3-14 Diagram of MCSI1 Connection
24
Diagram of Signal Flow
25
Figure 3-15 Diagram of Audio Section
25
Audio Amplifier
26
Figure 3-16 Diagram of Audio Signal Flow
26
Troubleshooting Flow Chart
27
PCB Difference
28
4 GPS Circuit
29
Circuit Description
29
Figure 4-1 Diagram of GPS Circuit
29
Schematic Diagram
30
Parts List
30
Figure 4-2 Schematic Diagram
30
Troubleshooting Flow Chart
33
5 Tuning Description
34
6 Interface Definition
35
Table 6-1 Definition of 50-Pin Interface
37
Table 6-2 Definition of 30-Pin LCD Interface
37
Table 6-3 Definition of Channel Board Interface
38
Table 6-4 Definition of 20-Pin Option Board Interface
40
Table 6-5 Definition of 16-Pin Accessory Interface
40
Table 6-6 Definition of Accessory Identifiers
41
7 UHF1 (400-470Mhz) Information
42
Transmitter Circuit
42
RF Power Amplifier Circuit
42
Figure 7-1 Diagram of Transmitter Circuit
42
Low-Pass Filter Circuit
43
Auto Power Control Circuit
43
Receiver Circuit
43
Receiver Front-End
44
Figure 7-2 Diagram of Receiver Circuit
44
Receiver Back-End
45
Frequency Generation Unit (FGU)
45
Figure 7-3 Diagram of if Processor
45
Figure 7-4 Diagram of FGU
46
Working Principle of PLL
46
Two-Point Modulation
47
Working Principle of VCO
47
PCB View
48
Block Diagram
56
Schematic Diagram
59
Parts List
75
Troubleshooting Flow Chart
125
8 UHF2 (450-520Mhz) Information
131
Transmitter Circuit
131
RF Power Amplifier Circuit
131
Figure 8-1 Diagram of Transmitter Circuit
131
Low-Pass Filter Circuit
132
Auto Power Control Circuit
132
Receiver Circuit
132
Receiver Front-End
133
Figure 8-2 Diagram of Receiver Circuit
133
Receiver Back-End
134
Frequency Generation Unit (FGU)
134
Figure 8-3 Diagram of if Processor
134
Figure 8-4 Diagram of FGU
135
Working Principle of PLL
135
Working Principle of VCO
135
Two-Point Modulation
136
PCB View
137
Block Diagram
145
Schematic Diagram
148
Parts List
164
Troubleshooting Flow Chart
215
9 UHF3 (350-400Mhz) Information
221
Transmitter Circuit
221
RF Power Amplifier Circuit
221
Figure 9-1 Diagram of Transmitter Circuit
221
Low-Pass Filter Circuit
222
Auto Power Control Circuit
222
Receiver Circuit
222
Receiver Front-End
223
Figure 9-2 Diagram of Receiver Circuit
223
Receiver Back-End
224
Frequency Generation Unit (FGU)
224
Figure 9-3 Diagram of if Processor
224
Figure 9-4 Diagram of FGU
225
Working Principle of PLL
225
Working Principle of VCO
225
Two-Point Modulation
226
PCB View
227
Block Diagram
235
Schematic Diagram
238
Parts List
254
Troubleshooting Flow Chart
305
10 UHF5 (806-941Mhz) Information
311
Transmitter Circuit
311
RF Power Amplifier Circuit
311
Figure 10-1 Diagram of Transmitter Circuit
311
Low-Pass Filter Circuit
312
Auto Power Control Circuit
312
Receiver Circuit
312
Receiver Front-End
313
Figure 10-2 Diagram of Receiver Circuit
313
Receiver Back-End
314
Frequency Generation Unit (FGU)
314
Figure 10-3 Diagram of if Processor
314
Figure 10-4 Diagram of FGU
315
Working Principle of PLL
315
Working Principle of VCO
315
Two-Point Modulation
316
PCB View
317
Block Diagram
325
Schematic Diagram
328
Parts List
344
Troubleshooting Flow Chart
398
11 VHF (136-174Mhz) Information
406
Transmitter Circuit
406
RF Power Amplifier Circuit
406
Figure 11-1 Diagram of Transmitter Circuit
406
Low-Pass Filter Circuit
407
Auto Power Control Circuit
407
Receiver Circuit
407
Receiver Front-End
408
Figure 11-2 Diagram of Receiver Circuit
408
Receiver Back-End
409
Frequency Generation Unit (FGU)
409
Working Principle of PLL
410
Working Principle of VCO
410
Direct Modulation
411
PCB View
412
Block Diagram
420
Schematic Diagram
423
Parts List
439
Troubleshooting Flow Chart
492
12 Disassembly and Assembly
498
Disassembling the Chassis
498
Disassembling the TX and RX Units
498
Assembly
499
13 Exploded View
500
14 Packing Guide
506
15 Specifications
507
16 Appendix
510
Table 16-1 UHF1 Blind Spot
511
Table 16-2 UHF2 Blind Spot
511
Table 16-3 UHF3 Blind Spot
512
Table 16-5 VHF Blind Spot
512
Other manuals for Hytera PD78XG
Manual
42 pages
System Planner
182 pages
Owner's Manual
15 pages
User Manual
35 pages
5
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Hytera PD78XG Specifications
General
Brand
Hytera
Model
PD78XG
Category
Portable Radio
Language
English
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