![background image](http://html.mh-extra.com/html/motorola/gp-688/gp-688_detailed-service-manual_245927400.webp)
3-44
UHF2
PCB and Schemtaic Diagrams
G
G
G
G
G
G
G
G
G
240
VCO BOTTOM SHIELD
VCO TOP SHIELD
C273
R245
1
3
2
0.1uF
Q241
BFQ67W
C253
1.5pF
SHIELD
SH241
1
.01uF
C297
C281
2.2uF
C276
100pF
1
2
3
L243
RESONATOR
3pF
C244
TX_BASE
16
TX_EMITTER
15
TX_IADJ
1
TX_OUT
10
TX_SWITCH
13
S
R
E
F
F
U
B
_
C
C
V
14
CI
G
O
L
_
C
C
V
18
PRESC_OUT
12
RX_BASE
5
RX_EMITTER
6
RX_IADJ
2
RX_OUT
8
RX_SWITCH
7
SUPER_FLTR
3
TRB_IN
19
U241
COLL_RFIN
4
FLIP_IN
20
S
R
E
F
F
U
B
_
D
N
G
11
G
A
L
F
_
D
N
G
9
17
CI
G
O
L
_
D
N
G
R248
50U54
30
C247
C248
100pF
C255
0.1uF
100pF
100pF
C251
C272
4
1
3
1.1pF
Q261
2
C241
100pF
R254
8.2K
R260
1K
CR242
SHIELD
SH242
1
100pF
C246
2.7pF
C245
22nH
L242
L273
18nH
R244
15K
L271
27nH
L241
390nH
390nH
L281
CR243
1
A1
A2
2
CR241
4.3pF
C250
C256
5.1pF
C289
C254
100pF
CR251
3.3pF
270
R252
5.1pF
C252
390nH
L251
R242
120
4
1
3
R251
33
Q260
2
C271
1pF
L282
390nH
10K
R243
7.5K
R253
C285
100pF
C286
1
1
P
P2
2
3
P
3
0.1uF
L253
RESONATOR
4.3pF
C242
4.3pF
C243
18
Rx_sw
Tx_sw
R241
Rx_sw
Tx_sw
RX_INJ
AUX3
AUX4
5V
VCTRL
PRESC
TX_INJ
VSF
VSF
UHF2 Voltage Controlled Oscillator Schematic Diagram
8471475L01
Содержание GP-688
Страница 5: ...Compact Professional Portable Radios Service Maintainability Issue July 2007 ...
Страница 14: ...x THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 24: ...2 6 MAINTENANCE THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 32: ...3 8 SERVICE AIDS THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 34: ...4 2 POWER UP SELF TEST THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 38: ...iv THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 52: ...2 10 TROUBLESHOOTING CHARTS THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 64: ...3 12 CONTROLLER KEYPAD SCHEMATICS ...
Страница 88: ...3 36 PCB and Scematic Diagrams Radios with Keypad and Display EPP THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 92: ...3 40 PCB and Scematic Diagrams Radios with Keypad and Display EPP THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 96: ...3 44 PCB and Scematic Diagrams Radios with Keypad and Display EPP THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 112: ...3 60 PCB and Schematic Drawings IP67 THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 116: ...3 64 PCB and Schematic Drawings IP67 THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 120: ...3 68 PCB and Schematic Drawings IP67 THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 130: ...3 78 PCB and Schematic Diagrams Radios without Keypad and Display THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 132: ...3 80 PCB and Schematic Diagrams Radios without Keypad and Display THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 134: ...3 82 PCB and Schematic Diagrams Radios without Keypad and Display THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 137: ...PCB and Schematic Diagrams Radios without Keypad and Display EPP 3 85 Complete Controller Schematic Diagram 8415885H01 ...
Страница 140: ...3 88 PCB and Schematic Diagrams Radios without Keypad and Display EPP Controller Memory Schematic Diagram 8415885H01 ...
Страница 142: ...3 90 PCB and Schematic Diagrams Radios without Keypad and Display EPP THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 147: ...Compact Professional Portable Radios VHF 136 174MHz Service Information Issue July 2007 ...
Страница 150: ...iv ...
Страница 172: ...2 10 TROUBLESHOOTING CHARTS THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 176: ...3 4 THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 192: ...3 20 VHF PCB Schematic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 195: ...VHF PCB and Schematic Diagrams EPP 3 23 VHF 136 174MHz Controls And Switches Schematic Diagram sht 1 of 2 8415533H02 ...
Страница 196: ...3 24 VHF PCB and Schematic Diagrams EPP VHF 136 174MHz Controls And Switches Schematic Diagram sheet 2 of 2 8415533H02 ...
Страница 197: ...VHF PCB and Schematic Diagrams EPP 3 25 VHF 136 174MHz Receiver Front End Schematic Diagram 8415533H02 ...
Страница 198: ...3 26 VHF PCB and Schematic Diagrams EPP VHF 136 174MHz Receiver Back End Schematic Diagram 8415533H02 ...
Страница 199: ...VHF PCB and Schematic Diagrams EPP 3 27 VHF 136 174MHz Synthesizer Schematic Diagram 8415533H02 ...
Страница 200: ...3 28 VHF PCB and Schematic Diagrams EPP VHF 136 174MHz Voltage Controlled Oscillator Schematic Diagram 8415533H02 ...
Страница 201: ...VHF PCB and Schematic Diagrams EPP 3 29 VHF 136 174MHz Transmitter Schematic Diagram 8415533H02 ...
Страница 202: ...3 30 VHF PCB Schematic Diagrams and Radio Parts List RF Radio EPP THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 208: ...3 36 VHF PCB Schematic Diagrams and Radio Parts List RF Radio EPP THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 218: ...3 46 VHF PCB Schematic Diagrams and Radio Parts List RF Board IP67 THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 224: ...3 52 VHF PCB Schematic Diagrams and Radio Parts List RF Board IP67 THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 237: ...Compact Professional Portable Radios UHF1 403 470MHz Narrow Band 450 470MHz Service Information Issue July 2007 ...
Страница 240: ...iv THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 258: ...2 8 TROUBLESHOOTING CHARTS THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 284: ...3 26 UHF1 PCB and Scematics Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 288: ...3 30 UHF1 PCB and Scematics Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 302: ...3 44 UHF1 PCB and Schematic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 312: ...3 54 UHF1 PCB and Schematic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 318: ...3 60 UHF1 PCB and Schematic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 328: ...3 70 UHF Narrow Band PCB Schematic Diagrams and Radio Parts List RF Board THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 334: ...3 76 UHF Narrow Band PCB Schematic Diagrams and Radio Parts List RF Board THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 335: ...Compact Professional Portable Radios UHF2 450 527MHz Service Information Issue July 2007 ...
Страница 338: ...iv THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 348: ...1 10 THEORY OF OPERATION THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 356: ...2 8 TROUBLESHOOTING CHARTS THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 360: ...3 4 UHF2 PCB SCHEMATICS PARTS LISTS THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 374: ...3 18 UHF2 PCB and Schematic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 378: ...3 22 UHF2 PCB and Schematic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 388: ...3 32 UHF2 PCB and Schematic Diagrams EPP THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 402: ...3 46 UHF2 PCB and Schemtaic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...