Sony UWP-V1, Service Manual

Page: 22 / 164

2-2
UWP Series
2-1-2. Adjustments
This section describes adjustments and checks which must be
completed to assure that the specifications are complied with.
Make adjustment and checks following the procedure below:
Preparation
1. Perform this adjustment after removing the front/rear
cabinets and battery case from the UTX-B2 unit, and
with the RF-131 board, battery terminal, and LINE/
MIC connector connected to the CPU-422 board.
(Refer to the Section 1-1-1. for removal.)
2. Connect the SMA-BNC conversion connector (J-6402-
480-A) and the MM-SMA conversion connector (J-
6402-490-A) to the antenna terminal (CN301) on the
RF-131 board as shown below.
MM-SMA conversion connector
SMA-BNC conversion connector
CN301
CN401
RF-131 board
MIC / LINE
input connector
CPU-422 board
POWER switch (S11)
Battery terminal
Red
+
Black
_
POWER
switch
(S11/CPU-422 board)
DC regulated power supply
(DC output voltage : + 3.0 ± 0.1 V)
DC ammeter
Battery terminal
3. Connecting the DC power supply
Supply the DC power to the battery terminal as below.
Check
After the DC power supply connection is complete, set
the power switch (S11/CPU-422 board) to ON, and
check the level on DC ammeter.
DC ammeter indication level: 130 to 200 mA
Switch and Control Initial Setting
Switch and Control Setting
U30 model ; 30-01 channel (566.125 MHz)
U42 model ; 42-01 channel (638.125 MHz)
CE62 model ; Group 00, 62-01 channel (798.125 MHz)
CE67 model ; Group 00, 67-01 channel (838.125 MHz)
KR model
; 59-01 channel (740.125 MHz)
Attenuation setting : 0 dB
Accumulated time setting : “00 : 00”
n
Note down the setting position before the adjustment.
After the Adjustment complete, set the original position.
1. Power Supply Voltage Check
2. Carrier Frequency Adjustment
3. RF Power Output Adjustment
4. Reference Frequency Deviation Adjustment
5. Maximum Frequency Deviation Adjustment
6. Distortion Ratio Check
7. S/N Check
8. Frequency Characteristics Check
9. Tone Signal Adjustment
10. Spurious Emissions Check
11. Occupied Band Width Check
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