Sony UWP-V1, Service Manual

Page: 34 / 164

2-14
UWP Series
2-2-2. 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. When adjustments are performed, remove the MB-1137
board from UTX-H2 unit.
(Refer to the Section 1-2-1. 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 (CN101) on the
MB-1137 board as shown below.
GND
BATT
Solder here.
Lead wire
DC ammeter
MB-1137 board (B side)
DC regulated power supply
(DC output voltage :
+
3.0
±
0.1 V)
Solder here.
Lead wire
3. Connecting the DC power supply
Supply the DC power to the battery terminal on MB-
1137 board using the wires as below.
Check
After the DC power supply connection is complete, set the
power switch (S301) to ON, and check the level on DC
ammeter.
DC ammeter indication level: 130 to 200 mA
4. Switch and Control Initial Setting
MB-1137 board
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
↓
↓
↓
↓
↓
↓
↓
↓
↓
↓
MM-SMA conversion connector
SMA-BNC conversion connector
CN101
MB-1137 board (B side)