Carrier Frequency Adjustment; Rf Power Output Adjustment - Sony WRT-807B Service Manual

3-2-2. Carrier Frequency Adjustment

Equipment and Tools
DC power supply
DC output voltage : +1.5 ± 0.1 Vdc
DC ammeter
Frequency counter
SMA-BNC (J) connector (Part No. J-6402-490-A)
RF conversion connector (Part No. J-6402-400-A)
Adjustor (Part No. 7-721-052-81)
Connections
(For connecting the DC power supply, refer to the
"Preparation" on page 3-2.)
SMA-BNC (J) connector with
RF conversion connector
CN305
Switch and Control Setting
Same as "Switch and Control Initial Setting" on page 3-3.
Procedure
(1) Connect the frequency counter to the antenna connector
(CN305) with SMA-BNC (J) connector (and RF con-
version connector).
(2) Adjust 1CT200 on the DP-306 board so that the frequency
counter reading meets the following specification.
Specification : Carrier frequency mentioned in the table
below.
WRT-807B
CE57 model
CE62 model
CE67 model
U30 model
U42 model
U62 model
U66 model
Adjustment : 1CT200/DP-306 Board (A side)
3-4
Frequency counter
MB-860 board (B side)
Carrier frequency
770.000 MHz ± 1 kHz
810.000 MHz ± 1 kHz
850.000 MHz ± 1 kHz
578.125 MHz ± 1 kHz
650.125 MHz ± 1 kHz
770.125 MHz ± 1 kHz
794.125 MHz ± 1 kHz

3-2-3. RF Power Output Adjustment

Equipment and Tools
DC power supply
DC output voltage : +1.5 ± 0.1 Vdc
DC ammeter
Power meter (with power sensor)
SMA-BNC (J) connector (Part No. J-6402-490-A)
RF conversion connector (Part No. J-6402-400-A)
Adjustor (Part No. 7-721-052-81)
Connections
(For connecting the DC power supply, refer to the
"Preparation" on page 3-2.)
Power meter
Power sensor
SMA-BNC (J) connector with RF conversion connector
RV305
CT301
Switch and Control Setting
Same as "Switch and Control Initial Setting" on page 3-3.
Procedure
(1) Connect the power meter (with power sensor) to the
antenna connector (CN305) with SMA-BNC (J)
connector (and RF conversion connector).
(2) Adjustment
Specification : Power meter = Maximum
Adjustment : 1CT301/MB-860 Board (B side)
(3) Adjustment
Specification : Power meter = +9.0 ± 0.1 mW
Adjustment : 1RV305/MB-860 Board (B side)
MB-860 board (B side)
WRT-807B (U/CE)