Equipment And Tools - Sony UWP-V1 Service Manual

Adjustment Location
S673 S672
SET _
RV521
(Reference frequency
deviation adjustment)
CN401
RV441
(AF limiter adjustment)
1. Power Supply Voltage Check

Equipment and Tools

. DC power supply
DC output voltage : +3.0 ± 0.1 Vdc
. DC ammeter
. Digital volt meter (or Digital multimeter)
Switch and Control Setting
CPU-422 board
Transmission channel
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
Take note of the settings before starting the confirmation
work.
After confirmation is completed, return the settings to
the original setting before change.
UWP Series
LCD
CT621
CPU-422 board
(B side)
S671
+
CN301
RV351
(RF output "H"
adjustment)
CT361
(Output efficiency
optimization)
RV341
(RF output "L"
adjustment)
RV491
(AF clipper adjustment)
RV511
(Tone signal level adjustment)
RF-131 board
(A side)
0 dB
Connections
(For connecting the DC power supply, refer to step
"3. Connecting the DC power supply" in Section 2-1-2.)
GND
C24 (+)
L12
DC voltmeter
Procedure
1. Set the POWER switch (S11/CPU-422 board) to ON.
2. Check the DC Voltage of the + terminal on the C24/
CPU-422 board to the specified voltage as below :
Specification : C24 (+ terminal) DC Voltage = +3.3
± 0.1Vdc
3. Check the DC voltage of the L12/CPU-422 board to the
specified voltage as below :
Specification : L12 terminal DC voltage = +5.0 ± 0.1Vdc
GND
S11
GND
CPU-422 board (B side)
2-3