Sony UWP-V1, Service Manual

Page: 59 / 164

2-39
UWP Series
(8) Tone Squelch Check
Procedure
n
The checking procedures describe that the URX-M2 (to be
adjusted) is installed into the Tuner
[1]
slot on the MB-X6 or
MB-806.
1. Set the URX-M2 and MB-X6/MB-806 as follows :
. URX-M2 Front panel (Tuner
[1]
)
Channel setting :
U30 model ; Group 03, 32-01 channel (578.125 MHz)
U42 model ; Group 03, 44-01 channel (650.125 MHz)
CE62 model ; Group 04, 63-32 channel (810.000 MHz)
CE67 model ; Group 04, 68-32 channel (850.000 MHz)
KR model
; Group 12, 60-01 channel (746.125 MHz)
Muting : ON (Normal mode)
. MB-X6/MB-806 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) :
U30 model ; 578.125 MHz
U42 model ; 650.125 MHz
CE62 model ; 810.000 MHz
CE67 model ; 850.000 MHz
KR model
; 746.125 MHz
RF OUTPUT (Output level) : 60 dB
u
V
EMF
(=
_
53 dBm)
MODULATION (Modulation frequency) : 32.000 kHz
DEVIATION (Frequency deviation)
:
±
1.4 kHz
n
32.000 kHz modulation frequency must be set by using
the function generator.
4. Turn on and off the MODULATION (modulation fre-
quency) of the signal generator as follows, and the LCD
indicator (Tuner
[1]
) changes also as follows.
MODULATION ON/OFF LCD indication of Tuner
[1] [1] [1] [1] [1]
on signal generator (URX-M2)
ON GP/CH indication (LCD):
U30 model
; “03, 32-01” appears.
U42 model ; “03, 44-01” appears.
CE62 model ; “04, 63-32” appears.
CE67 model ; “04, 68-32” appears.
KR model
; “12, 60-01” appears.
OFF GP/CH indication (LCD) :
Toggles between the above
indication and “NOTONE”
indication.
5. Connect the signal generator to the ANTENNA B IN
connector with DC cut fixture.
6. Perform the procedures 3 to 4 above.
(7) AF Level Indicator/AF Indicator Check
Procedure
n
The checking procedures describe that the URX-M2 (to be
adjusted) is installed into the Tuner
[1]
slot on the MB-X6 or
MB-806.
1. Set the URX-M2 and MB-X6/MB-806 as follows :
. URX-M2 Front panel (Tuner
[1]
)
Channel setting :
U30 model ; Group 03, 32-01 channel (578.125 MHz)
U42 model ; Group 03, 44-01 channel (650.125 MHz)
CE62 model ; Group 04, 63-32 channel (810.000 MHz)
CE67 model ; Group 04, 68-32 channel (850.000 MHz)
KR model
; Group 12, 60-01 channel (746.125 MHz)
RF Squelch : OFF (For setting, refer to “Setting the
Squelch OFF mode” on page 2-29)
.
MB-X6/MB-806 Rear panel
ATT (ANTENNA A, B) switch : 0 dB
2. Connect the signal generator to the ANTENNA A IN
connector with DC fixture.
3. Set the signal generator as follows :
Signal generator setting
FREQUENCY (carrier frequency) :
U30 model ; 578.125 MHz
U42 model ; 650.125 MHz
CE62 model ; 810.000 MHz
CE67 model ; 850.000 MHz
KR model
; 746.125 MHz
RF OUTPUT (Output level) : 60 dB
u
V
EMF
(=
_
53 dBm)
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
±
1.0)
kHz with the AF indicator as follows.
DEVIATION setting AF indicator of Tuner
[1] [1] [1] [1] [1]
on signal generator
±
(5.0
±
1.0) kHz AF level indicator (LCD);
Lights.
Less than AF level indicator (LCD);
±
(5.0
±
1.0) kHz Goes out.
5. Connect the signal generator to the ANTENNA B IN
connector with DC cut fixture.
6. Perform the procedures 3 to 4 above.