Sony UWP-V1 Service Manual page 49

3. Output Level Adjustment
Perform this adjustment when the TUNER OUTPUT levels
deviate from the specification.
Preparation
1. Turn off the POWER switch of the MB-X6/MB-806.
2. Remove the case cover of the MB-X6/MB-806.
3. Remove the upper side case lid of the URX-M2, and
insert the URX-M2 to the Tuner [1] slot of the MB-
X6/MB-806.
Equipment and Tools
. Tuner base unit MB-X6/MB-806
. Audio analyzer (level meter, distortion meter)
. Mic amp (Noise meter)
. Oscilloscope
. Adjuster (0.4 x 1.3 mm) : (Part No. 7-721-052-81)
. DC cut fixture (See the "How to make DC cut fixture"
on page 2-28)
Connection/Adjustment Location
Signal
TUNER
generator
OUTPUT 1
DC cut fixture
ANTENNA A IN
1 2 3
Tuner slot
RV402 RV401
URX-M2
UWP Series
Audio
MIC amp analyzer
600 Z
balance
input
Oscilloscope
DC cut fixture
ANTENNA B IN
MB-X6/MB-806
4 5 6
Switch and Control Setting
. URX-M2 Front panel
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
OUTPUT LEVEL switch :
Procedure
Preparation
Set the signal generator as follows :
Signal generator setting
FREQUENCY (carrier frequency) :
; 578.125 MHz ± 1 kHz
U30 model
; 650.125 MHz ± 1 kHz
U42 model
CE62 model ; 810.000 MHz ± 1 kHz
CE67 model ; 850.000 MHz ± 1 kHz
; 746.125 MHz ± 1 kHz
KR model
RF OUTPUT (Output level) : 60 dBuV
MODULATION (Modulation frequency)
DEVIATION (Frequency deviation)
Adjustment
n
The adjustment procedures describe that the URX-M2
(to be adjusted) is installed into the Tuner [1] slot on the
MB-X6/MB-806.
1. Connect the audio analyzer to the TUNER OUTPUT 1
connector via MIC amp.
2. Connect the signal generator to the ANTENNA A IN
connector with DC cut fixture.
3. Adjustment (ANTENNA A IN side adjustment)
Point : TUNER OUTPUT 1
Specification : Output level (level meter indication
level) = _20 dBm ± 0.5 dB (at 600 Z
loaded)
Adjustment : 1RV401/MB-1129 board (URX-M2)
4. Connect the signal generator to the ANTENNA B IN
connector with DC cut fixture.
LINE (_20 dBm)
EMF
(= _53 dBm)
: 100 Hz
: ± 5 kHz
2-29