Sony MB-806A Service Manual page 38

(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.
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 dBuVemF
(= -113 dBm)
MODULATION (Modulation frequency): 1 kHz
DEVIATION (Frequency deviation): +5 kHz
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.
(3
~
(4
—
RF level indicator oe Signal generator output level
lights in of Tuner
LCD:
25 dByVemr +5 dB
Lighting
Li
ti
CD:
()
; 4 35 dBuVemr +5 dB
ing -+{ e
LCD:
Ligh
VemF +5 dB
Lighting { 45 dBuVeMF
LCD:
Lighting 55 dByuVemr +5 dB
MB-806< (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 @)
and @ below.
Perform the procedures (1) through (5) above, for each
channel setting ©) and @®).
@ 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
@) 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 [4]> Tuner [2], [3], [4], [5], and [6]
3-13