VHF (136-174MHz) Information
Service Manual
486
FGU
FGU check
Check the power
supply circuit.
5VFGU, 3V3ARF,
3V3DRF are normal?
VCO oscillates?
Q106
、
Q110
输出是否正常?
反馈是
否正常?
Yes
Yes
Yes
CV voltage is normal?[3]
Feedback is output?
Yes
Yes
Yes
No
Replace Q106
and Q107.
Q106 and Q107
are normal?[1]
Q104 and Q108
are normal?[2]
No
No
Yes
Replace Q104
and Q108.
No
Check Q104, Q108 and
peripheral components.
Yes
No
L110 and L116 are
normal?[4]
Replace L110 and
L116.
No
Q101 and Q102
are normal?[5]
Check the
feedback circuit.
No
19.2MHz crystal
oscillates?
Check the
19.2MHz circuit.
No
Sky72310 clock is
normal?[6]
Completed
Yes
Check the data
circuit of the
control circuit.
No
Check Q101, Q102 and
peripheral components.
Replace Q101
and Q102.
No
Yes
Содержание PD70X Series
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Страница 9: ...Figures Service Manual vi Figure 11 3 Diagram of IF Processor 399 Figure 11 4 Diagram of FGU 400 ...
Страница 18: ...Baseband Section Service Manual 8 Figure 3 3 Diagram of OMAP5912 Figure 3 4 Diagram of Overall Scheme ...
Страница 48: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Top Layer 38 7 4 PCB View ...
Страница 49: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Bottom Layer 39 ...
Страница 50: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Top Layer 40 ...
Страница 51: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Bottom Layer 41 ...
Страница 52: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Top Layer 42 ...
Страница 53: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Bottom Layer 43 ...
Страница 54: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Top Layer 44 ...
Страница 55: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Bottom Layer 45 ...
Страница 57: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G Block Diagram Baseband Section 47 ...
Страница 127: ...Service Manual UHF1 400 470MHz Information 117 Transmitter Circuit ...
Страница 137: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Top Layer 127 8 4 PCB View ...
Страница 138: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Bottom Layer 128 ...
Страница 139: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Top Layer 129 ...
Страница 140: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Bottom Layer 130 ...
Страница 141: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Top Layer 131 ...
Страница 142: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Bottom Layer 132 ...
Страница 143: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Top Layer 133 ...
Страница 144: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Bottom Layer 134 ...
Страница 146: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G Block Diagram Baseband Section 136 ...
Страница 217: ...Service Manual UHF2 450 520MHz Information 207 Transmitter Circuit ...
Страница 227: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Top Layer 217 9 4 PCB View ...
Страница 228: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Bottom Layer 218 ...
Страница 229: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Top Layer 219 ...
Страница 230: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Bottom Layer 220 ...
Страница 231: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Top Layer 221 ...
Страница 232: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Bottom Layer 222 ...
Страница 233: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Top Layer 223 ...
Страница 234: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Bottom Layer 224 ...
Страница 236: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G Block Diagram Baseband Section 226 ...
Страница 307: ...Service Manual UHF3 350 400MHz Information 297 Transmitter Circuit ...
Страница 317: ...10 4 PCB View PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Top Layer 307 ...
Страница 318: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Bottom Layer 308 ...
Страница 319: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Top Layer 309 ...
Страница 320: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Bottom Layer 310 ...
Страница 321: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Top Layer 311 ...
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Страница 323: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Top Layer 313 ...
Страница 324: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Bottom Layer 314 ...
Страница 326: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G Block Diagram Baseband Section 316 ...
Страница 397: ...Service Manual UHF5 806 941MHz Information 387 No Ref No Part No Description 17 R7 3001051010000 100Ω ...
Страница 398: ...UHF5 806 941MHz Information Service Manual 388 10 8 Troubleshooting Flow Chart Receiver Circuit ...
Страница 401: ...Service Manual UHF5 806 941MHz Information 391 Transmitter Circuit ...
Страница 412: ...11 4 PCB View PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Top Layer 402 ...
Страница 413: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G PCB View Main Board Bottom Layer 403 ...
Страница 414: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Top Layer 404 ...
Страница 415: ...PD70X PD70XG HD705 HD705G PCB View Channel Board Bottom Layer 405 ...
Страница 416: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Top Layer 406 ...
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Страница 418: ...PD78X PD78XG HD785 HD785G PCB View Keyboard Top Layer 408 ...
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Страница 421: ...PD70X PD70XG PD78X PD78XG HD705 HD705G HD785 HD785G Block Diagram Baseband Section 411 ...
Страница 492: ...VHF 136 174MHz Information Service Manual 482 11 8 Troubleshooting Flow Chart Receiver Circuit ...
Страница 494: ...VHF 136 174MHz Information Service Manual 484 Transmitter Circuit ...
Страница 506: ...Packing Guide Service Manual 496 14 Packing Guide This section takes PD78X PD78XG HD785 HD785G for example ...