Sony UWP-V1, Service Manual

Page: 81 / 164

2-61
UWP Series
Procedure
1. Input 1 kHz, _ 60 dBV ( _ 57.8 dBm) signal to the AF
INPUT connector (with Mic input cable).
(0 dBV = 1 Vrms)
2. Connect a modulation analyzer to the antenna terminal
(CN101) via the MM-SMA conversion connector and
the SMA-BNC conversion connector.
3. Turn the
1
RV1 and
1
RV2/MB-1094 board (A side)
fully counterclockwise.
4. Adjust 1 RV101 so that the frequency deviation for the
modulation analyzer reading meets the following speci-
fication.
Specification : Frequency deviation =
±
10 kHz
±
0.1 kHz
Adjustment : 1 RV101/MB-1094 board (A side)
(Refer to page 2-74 for the adjustment location.)
4. Reference Frequency Deviation Adjustment
Equipment and Tools
.
DC power supply
DC output voltage : + 3.0
±
0.1Vdc
. DC ammeter
. Audio analyzer
.
Modulation analyzer
MEASUREMENT : FM
MEASUREMENT RANGE : AUTO or
±
40 kHz
HPF : 50 Hz
LPF : 20 kHz or 15 kHz
DE EMPHASIS : 50
u
sec
.
Adjustor (SONY part No. 7-721-052-81)
.
MM-SMA conversion connector
(SONY Part No. J-6402-490-A)
. SMA-BNC conversion connector
(SONY Part No. J-6402-480-A)
Switch and Control Setting
MB-1094 board
Transmission channel
U30 model ; 32-01 channel (578.125 MHz)
U42 model ; 44-01 channel (650.125 MHz)
U6264 model ; 64-01 channel (770.125 MHz)
U6668 model ; 68-01 channel (794.125 MHz)
CE62 model
; Group 00, 63-32 channel (810.000 MHz)
CE67 model ; Group 00, 68-32 channel (850.000 MHz)
Attenuation setting : 0 dB
Accumulated time setting : “00 : 00”
MIC/LINE Select Switch (S1) : MIC
n
Note down the setting position before the adjustment.
After the Adjustment complete, set the original position.
Connections
(For connecting the DC power supply, refer to step
“3. Connecting the DC power supply” in Section 2-6-2.)
Lead wires
BNC connector
HOT
GND Solder
MB-1094 board
(B side)
CN1
MM-SMA conversion connector
SMA-BNC conversion connector
Oscillator
Audio analyzer Level meter
MB-1094 board (A side)
CN101
MM-SMA conversion connector
SMA-BNC conversion connector
Oscilloscope Modulation analyzer
RF IN