Sony WRR-801A Service Manual page 30

(7) Connect the signal generator to the ANTENNA B IN
connector with DC cut fixture, and perform the
procedures (4) through (6) above.
(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
channel setting (1 and 2).
1 Channel setting (Tuner [1]):
Signal generator setting:
FREQUENCY (carrier frequency); 794.125 MHz
2 Channel setting (Tuner [1]):
Signal generator setting:
FREQUENCY (carrier frequency); 805.875 MHz
Step 2: Tuner [2] to Tuner [6] checking
When the TUNER UNIT WRU-801A is installed in the
Tuner [2] (Tuner unit 2) to Tuner [6] (Tuner unit 6) of the
WRR-801A, perform the adjustments from procedures (1)
to (7) of "Step 1. Tuner [1] (Tuner unit 1) checking" on
the respective tuner units that are installed in the WRR-
801A.
When performing the above described checking change the
following details as shown below, of the "Step 1. Tuner
[1] (Tuner unit 1) checking".
Tuner [1] → Tuner [2], [3], [4], [5], and [6]
TUNER OUTPUT 1 → TUNER OUTPUT 2, 3, 4, 5, and 6
3-12
Group 00, 6801 channel
(794.125 MHz)
Group 00, 6947 channel
(805.875 MHz)
5. RF level indicator/RF indicator check
Procedure
Step 1: Tuner [1] (Tuner unit 1) checking
(1) Set the WRR-801A as follows;
Front panel (Tuner [1])
Channel setting: Group 00, 6901 channel
(800.125 MHz)
Muting: OFF
Rear panel
ATT (ANTENNA A, B) switch: 0 dB
(2) Connect the signal generator to the ANTENNA A IN
connector with DC cut fixture.
(3) Set the signal generator as follows:
Signal generator setting
FREQUENCY (Carrier frequency): 800.125 MHz
RF OUTPUT (Output level): 0 dBuV
MODULATION (Modulation frequency): 1 kHz
DEVIATION (Frequency deviation): ± 5 kHz
(4) Increase gradually the output level from the signal
generator, and check that the output level of the signal
generator is as follows when the RF input level
indicator (Tuner [1]) lights.
RF level indicator (green)
lights in of Tuner [1] [1] [1] [1] [1]
LCD:
Lighting
LCD:
Lighting
LCD:
Lighting
LCD:
Lighting
EMF
(= _113 dBm)
Signal generator output level
± 5 dB
25 dBuV
EMF
± 5 dB
35 dBuV
EMF
± 5 dB
45 dBuV
EMF
± 5 dB
55 dBuV
EMF
WRR-801A
WRU-801A