Sony WRU-806B Service Manual page 18
Uhf synthesized tuner unit
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Also See for WRU-806B:
- Operating instructions (2 pages) ,
- Operating instructions (2 pages)
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(8) Set the channel setting (Tuner [1]) and FREQUENCY
(carrier frequency) of the signal generator as shown 1
and 2 below.
Perform the procedures (1) to (7) above, for each chan-
nel setting (1 and 2).
1 Channel setting :
CE38 model ; Group 00, 3801 channel (606.125 MHz)
U30 model ; Group 00, 3001 channel (566.125 MHz)
U42 model ; Group 00, 4201 channel (638.125 MHz)
Signal generator setting :
FREQUENCY (carrier frequency)
CE38 model ; 606.125 MHz
U30 model ; 566.125 MHz
U42 mode
; 638.125 MHz
2 Channel setting :
CE38 model ; Group 00, 4063 channel (629.875 MHz)
U30 model ; Group 00, 3347 channel (589.875 MHz)
U42 model ; Group 00, 4547 channel (661.875 MHz)
Signal generator setting :
FREQUENCY (carrier frequency) :
CE38 model ; 629.875 MHz
U30 model ; 589.875 MHz
U42 model ; 661.875 MHz
5. RF Level Indicator/RF Indicator Check
Procedure
n
The checking procedures describe that the WRU-806B (to
be adjusted) is installed into the Tuner [1] slot on the MB-
X6.
(1) Set the MB-X6 as follows :
WRU-806B Front panel (Tuner [1])
Channel setting :
CE38 model ; Group 00, 3932 channel (618.000 MHz)
U30 model ; Group 00, 3201 channel (578.125 MHz)
U42 model ; Group 00, 4401 channel (650.125 MHz)
Muting: ON
Rear panel
ATT (ANTENNA A, B) switch : 0 dB
(2) Connect the signal generator to the ANTENNA A IN
connector with DC cut fixture.
2-10
(3) Set the signal generator as follows :
Signal generator setting
FREQUENCY (carrier frequency) :
CE38 model ; 618.000 MHz
U30 model ; 578.125 MHz
U42 model ; 650.125 MHz
RF OUTPUT (Output level) : 0 dBuV
MODULATION (Modulation frequency) : 1 kHz
DEVIATION (Frequency deviation)
(4) Increase gradually the output level from the signal gen-
erator, and check that the output level of the signal gen-
erator is as follows when the RF input level indicator
(Tuner [1]) lights.
RF level indicator (green)
[1]
[1]
[1]
lights in of Tuner [1]
[1]
LCD:
Lighting
LCD:
Lighting
LCD:
Lighting
LCD:
Lighting
(5) Connect the signal generator to the ANTENNA B IN
connector with DC cut fixture, and perform the proce-
dures (3) and (4) above.
(= _113 dBm)
EMF
: ± 5 kHz
Signal generator output level
± 5 dB
25 dBuV
EMF
± 5 dB
35 dBuV
EMF
± 5 dB
45 dBuV
EMF
± 5 dB
55 dBuV
EMF
WRU-806B
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