Sony WRR-801A Service Manual page 31

(5) Connect the signal generator to the ANTENNA B IN
connector with DC cut fixture, and perform the
procedures (3) and (4) above.
(6) Set the channel setting (Tuner [1]) and FREQUENCY
(carrier frequency) of the signal generator as shown 1
and 2 below.
Perform the procedures (1) through (5) 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 (6) 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]
6. AF level indicator/AF 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 fixture.
WRR-801A
WRU-801A
Group 00, 6801 channel
(794.125 MHz)
Group 00, 6947 channel
(805.875 MHz)
(3) Set the signal generator as follows:
Signal generator setting
FREQUENCY (Carrier frequency): 800.125 MHz
RF OUTPUT (Output level): 60 dBuV
MODULATION (Modulation frequency): 1 kHz
(4) Increase gradually DEVIATION (frequency deviation)
of the signal generator starting from ± 3 kHz, and
check that the deviation of the signal generator is
± (5.0 ± 1.2) kHz with the AF indicator as follows.
DEVIATION setting AF indicator of
Tuner [1]
on signal generator
± (5.0 ± 1.2) kHz
AF level indicator (LCD);
Blinking
AF indicator (LED);
Lights in
Less than AF level indicator (LCD);
± (5.0 ± 1.2) kHz
Goes out
AF indicator (LED);
Goes out
(5) Connect the signal generator to the ANTENNA B IN
connector with DC cut fixture, and perform the
procedures (3) and (4) above.
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 (4) 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]
EMF
(= _53 dBm)
[1] [1] [1] [1]
LCD:
AF
LCD:
AF
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