Sony MB-806A, Service Manual

Page: 39 / 82

3-13 MB-806A (CE)
WRU-806A (CE, AU)
(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:
CE62 model: Group 00, 6217 channel (800.125 MHz)
CE69 model: Group 00, 6901 channel (854.125 MHz)
AU66 model: Group 00, 6601 channel (792.250 MHz)
Signal generator setting:
FREQUENCY (Carrier frequency)
CE62 model: 800.125 MHz
CE69 model: 854.125 MHz
AU66 model: 792.250 MHz
2
Channel setting:
CE62 model: Group 00, 6363 channel (813.875 MHz)
CE69 model: Group 00, 6964 channel (862.000 MHz)
AU66 model: Group 00, 6751 channel (805.500 MHz)
Signal generator setting:
FREQUENCY (Carrier frequency):
CE62 model: 813.875 MHz
CE69 model: 862.000 MHz
AU66 model: 805.500 MHz
Step 2:
Tuner
[2]
to Tuner
[6]
checking
When the WRU-806A Tuner Unit is installed in the Tuner
[2]
(Tuner unit 2) to Tuner
[6]
(Tuner unit 6) of the MB-
806A, 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 MB-806A.
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]
(1) Set the MB-806A as follows;
Front panel (Tuner
[1]
)
Channel setting:
CE62 model; Group 00, 6301 channel (806.125 MHz)
CE69 model; Group 00, 6933 channel (858.125 MHz)
AU66 model; Group00, 6701 channel (799.250 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.
(3) Set the signal generator as follows:
Signal generator setting
FREQUENCY(carrier frequency):
CE62 model; 806.125 MHz
CE69 model; 858.125 MHz
AU66 model; 799.250 MHz
RF OUTPUT (Output level): 0 dB u V
EMF
(=
_
113 dBm)
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) Signal generator output level
lights in of Tuner
[1] [1] [1] [1] [1]
25 dB
u
V
EMF
±
5 dB
35 dB u V
EMF
±
5 dB
45 dB
u
V
EMF
±
5 dB
55 dB u V
EMF
±
5 dB
Lighting
LCD:
Lighting
LCD:
Lighting
LCD:
Lighting
LCD: