Sony UWP-V1 Service Manual page 63

2. Reference Frequency (4 MHz oscillation
frequency) Adjustment
Equipment and Tools
. DC power supply
DC output voltage : +3.0Vdc ± 0.1 V
. Frequency counter
Switch and Control Setting
Set the URX-P2 as follows :
Channel setting :
U30 model ; Group 03, 3201 channel (578.125 MHz)
U42 model ; Group 03, 4401 channel (650.125 MHz)
CE62 model ; Group 04, 6332 channel (810.000 MHz)
CE67 model ; Group 04, 6832 channel (850.000 MHz)
KR model ; Group 12, 6001 channel (746.125 MHz)
RF Squelch : OFF (For setting, refer to "Setting the
Squelch OFF mode" on page 2-42)
Monitor level :MON.01 (minimum value)
Preparation/Adjustment
1. Perform this adjustment after removing the two anten-
nas, CPU-421 board, RF-130 board, and CN-3092
board, and with the RF-130 board, CN-3092 board, and
battery terminal mounted to the CPU-421 board.
2. For connecting the DC power supply, refer to "1.
Current Consumption Check".
Connection
RF-130 board (A side)
CT341
Q131
Pin No.1
Frequency
counter
UWP Series
Procedure
1. Connect the frequency counter to the Q131 (corrector,
2. Adjustment
3. Connect the DC voltmeter to the C341/RF-130 board
4. Adjustment
DC
voltmeter
C341
GND
S683
CT621
" SET "
pin No.1)/RF-130 board (A side).
Specification : Frequency at Q131 (corrector,
pin No.1)/RF-130 board (A side)
= 233.250 MHz ± 0.001 MHz
Adjustment : 1 CT621/CPU-421 board (A side)
(side A).
Specification : DC voltage of the C341/RF-130
board =1.65 ± 0.1 V
Adjustment : 1 CT341/RF130 board (A side)
CPU-421 board (B side)
S681
" + "
S682
" _ "
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