Adjustments - Sony UWP-V1 Service Manual

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:
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
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.
CN301
RF-131 board
CN401
MIC / LINE
input connector
POWER switch (S11)
2-2
↓
↓
↓
↓
↓
↓
↓
↓
↓
↓
SMA-BNC conversion connector
MM-SMA conversion connector
Battery terminal
CPU-422 board
3. Connecting the DC power supply
Supply the DC power to the battery terminal as below.
POWER
switch
(S11/CPU-422 board)
DC ammeter
DC regulated power supply
(DC output voltage : + 3.0 ±0.1 V)
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
Accumulated time setting : "00 : 00"
n
Note down the setting position before the adjustment.
After the Adjustment complete, set the original position.
Red
+
Black
_
Battery terminal
: 0 dB
UWP Series