Service Manual
UHF3 (350-400MHz) Information
295
9.8
Troubleshooting Flow Chart
Receiver Circuit
Check Q9001.
The second LO is
normal?[6]
Input IF signal
via U401 PIN47 to check
whether IF sensitivity
is normal?[5]
Check Q403 and
peripheral
components.
Check Q9017
and Q9018.
Check Q9019.
Check Q9001 and the
front-end RF circuit.
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Check D401 and
other appropriate
components.
No receive
No
Yes
Yes
Check RX VCO.
Yes
No
TP9003 outputs
normally?[10]
Yes
No
Check Z9001, Q9017, Q9018 and
peripheral circuits.
No
Yes
R5V output is normal?[1]
5VRT output is normal?[2]
The static
working point of Q9001 is
normal?[3]
The static
working point of Q9017/Q9018
is normal?[4]
18MHz crystal is
normal?[7]
TP9004 outputs
normally?[8]
TP9005 outputs
normally?[9]
TP402 outputs
normally?[11]
Input signal is normal?[12]
Yes
Completed
No
Check signal frequency, amplitude
and modulation information.
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 ...
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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 ...
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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 ...
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Страница 321: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Top Layer 311 ...
Страница 322: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Bottom Layer 312 ...
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 ...
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Страница 416: ...PD78X PD78XG HD785 HD785G PCB View Channel Board Top Layer 406 ...
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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 ...