RCA RDR9000 User Manual

Service Manual 6. UHF1 (400-470 MHz) Information
228
7.8.2 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

RCA RDR9000 Specifications

General

Brand	RCA
Model	RDR9000
Category	Repeater
Language	English