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Hytera
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PD78XG
Hytera PD78XG Service Manual
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5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
POWER-SW+
POWER-SW+
POWER-SW+
3V3D
1V6D
5VRT
3V3D
3V6D
5VFGU
BAT+
3V6D
1V8D
3V3A
BAT+
EXT-BAT+
3V3ARF
BAT+
3V3GPS
3V3DRF
3V3DRF
BAT+
INT-BAT+
3V3DRF
PS-GPS
3
PWR-RESET
2
PWR-SW+
6,7
PWR-SW-
6,7,12,13
EXT-PWR
3
POWER-CTL
3
POWER-KEY-DET
3
POWER-CTL
3
Maximal current 500mA
C676
0.22uF 10V
C676
0.22uF 10V
C601
2.2uF
C601
2.2uF
R628
47K
R628
47K
C650
3900P
C650
3900P
C604
0.1uF/16V
C604
0.1uF/16V
C678
0.22uF 10V
C678
0.22uF 10V
C683
0.22uF
C683
0.22uF
C612
0.01uF*NC
C612
0.01uF*NC
U607
TPS3808G33QDBVRQ1
U607
TPS3808G33QDBVRQ1
RESET
1
MR
3
GND
2
Ct
4
VDD
6
SENSE
5
U608
RP102N331B
U608
RP102N331B
VDD
1
GND
2
CE
3
NC
4
VOUT
5
C616
100pF
C616
100pF
C620
100pF/16V
C620
100pF/16V
C660
10uF
C660
10uF
D602
D602
2
1
L601
BLM18PG181SN1
L601
BLM18PG181SN1
C619
C619
C671
0.1uF
C671
0.1uF
L613
L613
R632
1K
R632
1K
C684
3900P
C684
3900P
L616
L616
TP604
1.8V
TP604
1.8V
1
C606
2.2uF
C606
2.2uF
U605
TK11250CM
U605
TK11250CM
ON/OFF
1
GND
2
NP(VREF)
3
VIN
6
GND
5
VOUT
4
C679
0.1uF/16V
C679
0.1uF/16V
D601
D601
1
2
U601
U601
RUN
1
SYNC
7
VFB
3
PLLPF
8
ITH
2
GND
4
VIN
6
SW
5
C685
470P
C685
470P
C687
3900P
C687
3900P
F602
1206L050-C
F602
1206L050-C
1
2
C640
0.22UF 10V
C640
0.22UF 10V
C641
2.2uF
C641
2.2uF
C624
2.2uF
C624
2.2uF
U612
RP102N331B
U612
RP102N331B
VDD
1
GND
2
CE
3
NC
4
VOUT
5
C608
0.1uF*NC
C608
0.1uF*NC
+
C637
47u
+
C637
47u
1
2
U609
RP102N331B
U609
RP102N331B
VDD
1
GND
2
CE
3
NC
4
VOUT
5
U611
U611
RUN
1
SYNC
7
VFB
3
PLLPF
8
ITH
2
GND
4
VIN
6
SW
5
Q605
SI2307BDS
Q605
SI2307BDS
1
2
3
C625
0.1uF
C625
0.1uF
R625
100K
R625
100K
D604
DAN222
D604
DAN222
1
2
3
C603
4.7uF/16V*NC
C603
4.7uF/16V*NC
C618
0.1uF/16V
C618
0.1uF/16V
C636
C636
1
1
2
2
3
3
L610
L610
C617
0.1uF/16V
C617
0.1uF/16V
C681
470P
C681
470P
C686
3900P
C686
3900P
C680
470P
C680
470P
L612
BLM18PG181SN1
L612
BLM18PG181SN1
C658
0.1uF/16V
C658
0.1uF/16V
Q608
2SK1824
Q608
2SK1824
2
3
1
C639
0.1uF
C639
0.1uF
C629
4.7uF/16V
C629
4.7uF/16V
C659
0.1uF
C659
0.1uF
C611
0.1uF*NC
C611
0.1uF*NC
L611
BLM18PG181SN1
L611
BLM18PG181SN1
R627
47K
R627
47K
C657
C657
1
1
2
2
3
3
C654
C654
1
1
2
2
3
3
Q603*NC
Q603*NC
1
3
2
C670
10uF
C670
10uF
R620
100K
R620
100K
L614
L614
C615
0.1u/16V
C615
0.1u/16V
C602
100pF/16V
C602
100pF/16V
C649
10uF
C649
10uF
P606
P606
1
C646
C646
1
1
2
2
3
3
C630
0.1uF/16V
C630
0.1uF/16V
C662
3900P
C662
3900P
C635
0.1uF
C635
0.1uF
U604
TK11250CM
U604
TK11250CM
ON/OFF
1
GND
2
NP(VREF)
3
VIN
6
GND
5
VOUT
4
C682
0.1uF/16V
C682
0.1uF/16V
Q606
SI1013R
Q606
SI1013R
1
2
3
C609
1uF*NC
C609
1uF*NC
C628
0.22UF 10V
C628
0.22UF 10V
R622
R622
Q607
2SK1824
Q607
2SK1824
2
3
1
C638
3900P
C638
3900P
C651
0.01uF
C651
0.01uF
C613
NC
C613
NC
R631
15K
R631
15K
C656
0.1uF
C656
0.1uF
R629
2.7K
R629
2.7K
C668
0.01uF
C668
0.01uF
C666
3900
C666
3900
L615
L615
TP603
3.6V
TP603
3.6V
1
+
C665
47u
+
C665
47u
1
2
R630
47K
R630
47K
C652
470pF
C652
470pF
L603
BLM18PG181SN1
L603
BLM18PG181SN1
R615
NC
R615
NC
L602
BLM18PG181SN1
L602
BLM18PG181SN1
R626
100K
R626
100K
L606
BLM18PG181SN1
L606
BLM18PG181SN1
C627
C627
1
1
2
2
3
3
J601
PD-700/BATB
J601
PD-700/BATB
1
2
3
4
5
C645
220P/50V
C645
220P/50V
R607
10
R607
10
R633
100K
R633
100K
R611
10K
R611
10K
L617
BLM18PG181SN1
L617
BLM18PG181SN1
C642
0.1uF
C642
0.1uF
P608
P608
1
P609
P609
1
R623
100K-F
R623
100K-F
U603
RP102N331B*NC
U603
RP102N331B*NC
VDD
1
GND
2
CE
3
NC
4
VOUT
5
C614
5.6pF
C614
5.6pF
R624
100K
R624
100K
R612
1K
R612
1K
C653
2.2uF
C653
2.2uF
R621
47K
R621
47K
L605
BLM18PG181SN1
L605
BLM18PG181SN1
R618
130K-F
R618
130K-F
C647
0.01uF
C647
0.01uF
P610
P610
1
C674
220P/50V
C674
220P/50V
Q604
2SK1824
Q604
2SK1824
2
3
1
TP602
RESET
TP602
RESET
1
C623
1uF/25V
C623
1uF/25V
TP605
1.6V
TP605
1.6V
1
C688
0.1uF
C688
0.1uF
C605
1uF/25V
C605
1uF/25V
C655
0.22UF 10V
C655
0.22UF 10V
L604
BLM18PG181SN1*NC
L604
BLM18PG181SN1*NC
C672
20pF/50V
C672
20pF/50V
R617
470K-F
R617
470K-F
C610
2.2uF*NC
C610
2.2uF*NC
C621
4.7uF/16V
C621
4.7uF/16V
L607
L607
C677
1uF
C677
1uF
C669
1uF
C669
1uF
U606
RP102N331B
U606
RP102N331B
VDD
1
GND
2
CE
3
NC
4
VOUT
5
R614
R614
C648
1uF
C648
1uF
R613
1K
R613
1K
C667
C667
1
1
2
2
3
3
U610
RP102N181D
U610
RP102N181D
VDD
1
GND
2
CE
3
NC
4
VOUT
5
F601
2.5A-32V
F601
2.5A-32V
1
2
L609
BLM18PG181SN1
L609
BLM18PG181SN1
C626
0.1uF/16V
C626
0.1uF/16V
C644
20pF/50V
C644
20pF/50V
C663
470pF
C663
470pF
R601
91K-F
R601
91K-F
P607
P607
1
C661
C661
1
1
2
2
3
3
C622
0.1uF/16V
C622
0.1uF/16V
C607
0.1uF
C607
0.1uF
PD70X/PD70XG/PD78X/PD78XG/HD705/HD705G/HD785/HD785G Schematic Diagram (Power)
417
426
428
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
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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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