Sony WRR-862A, Руководство по обслуживанию, Страница: 22 / 96

3-8
WRR-862A/862B
Signal
generator
AF output cable
OUTPUT1
OUTPUT2
ANT b
Mic amp
Audio
analyzer
(with A-weighted filter)
Oscilloscope
ANT a
4
3
1
2
Pin No.4
DC power supply DC ammeter
Pin No.1
To DC
POWER
SUPPLY
( + )
+ 12.0 ± 0.1V
( _ )
4P connector
DC 12V IN
Bottom View
+
_
+ _
+
_
Step 2. Tuner 2 Adjustment
(1) Set the CONTROL switch to “2”.
(2) Connect the signal generator to the ANT a connector.
(3) Set the signal generator as follows:
Signal generator setting
FREQUENCY (Carrier frequency)
CE21 model : 471.000 MHz
CE33 model : 567.000 MHz
CE62 model : 799.000 MHz
CE67 model : 839.000 MHz
U1416 model : 471.000 MHz
U3032 model : 567.000 MHz
U4244 model : 639.000 MHz
U6264 model : 759.000 MHz
U6668 model : 783.000 MHz
AU66 model : 793.000 MHz
RF OUTPUT (Output level) : 20 dB
u
V
EMF
(=
_
93 dBm)
MODULATION (Modulation frequency) :
OFF (No modulation)
(4) Perform the adjustments from procedures (7) to (25) in
“Step 1. Tuner 1 Adjustment” .
When performing the above described adjustments
change the following detail as shown below.
Tuner 1
→
Tuner 2
(5) After the adjustment (for Tuner 2) is completed, also
Tuner 2 will return to normal operation mode.
3-2-5. S/N Checking
n
Perform this adjustment/check with the case (upper) , parti-
tion and battery case installed.
(Do under the regular use condition).
Equipment and Tools
DC power supply :
+
12.0 Vdc
±
0.1 V
Signal generator
Function generator
Audio analyzer with A-weighted filter
Mic amp (Noise mete)
Oscilloscope
AF Output cable (supplied with WRR-862A/862B)
Connector 4 P (Part No. 1-566-425-11)
Connection
Switch and Control Setting
Same as “1. Switch and Control Initial Setting” on page 3-2.