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Service Manual
6. UHF1 (400-470 MHz) Information
325
8.8.2
Transmitter Circuit
Power supply
works normally?
[1]
No
Check the power
supply circuit.
Yes
APC_CTRL_Vgg is
normal? [2]
TV_APC is normal? [3]
Check the DAC
output circuit.
PS_TX and
5VRT are normal?
[6]
Replace
Q8007 and
Q8008.
Check the
9V3 power
supply circuit.
D8004 and
low-pass network are
normal?
[7]
Q8004 match network
is normal? [8]
Repair damaged
components.
Power is normal?
Completed
Repair damaged
components.
Power is normal?
Completed
Q8005 and Q8006 work
normally? [9]
Replace Q8005, Q8006
and repair the bias
circuit.
Power is normal?
Completed
U8004 and 9V3
work normally?
[10]
Replace U8004 and
repair the 9V3 power
supply circuit.
Power is normal?
Completed
Check the output
circuit of FGU.
PS_APC3.3V is normal?
[4]
T5V is normal? [5]
Transmitter circuit check
No
No
Yes
No
No
Yes
Yes
Yes
Yes
No
No
No
Yes
No
No
Yes
Yes
Yes
Yes
No
No
Yes
No
No
Yes
Summary of Contents for RDR9000
Page 1: ...RDR9000U V Service Manual ...
Page 45: ...Service Manual 6 UHF1 400 470 MHz Information 35 6 4 PCB View PCB View Main Board Top Layer ...
Page 46: ...Service Manual 6 UHF1 400 470 MHz Information 36 PCB View Main Board Bottom Layer ...
Page 48: ...Service Manual 6 UHF1 400 470 MHz Information 38 PCB View Rear Board Top Layer ...
Page 146: ...Service Manual 7 UHF3 350 400 MHz Information 136 7 4 PCB View PCB View Main Board Top Layer ...
Page 147: ...Service Manual 7 UHF3 350 400 MHz Information 137 PCB View Main Board Bottom Layer ...
Page 149: ...Service Manual 7 UHF3 350 400 MHz Information 139 PCB View Rear Board Top Layer ...
Page 248: ...Service Manual 8 VHF 136 174 MHz Information 238 8 4 PCB View PCB View Main Board Top Layer ...
Page 249: ...Service Manual 8 VHF 136 174 MHz Information 239 PCB View Main Board Bottom Layer ...
Page 251: ...Service Manual 8 VHF 136 174 MHz Information 241 PCB View Rear Board Top Layer ...
Page 346: ...Service Manual 11 Packing Guide 336 11 Packing Guide Figure 11 1Packing Guide ...
Page 352: ...342 ...