Board (Video Pll Free-Run Frequency Adjustment ) - Sony SIU-100 Service Manual

2-2. CPU-353 board (Video PLL free-run
frequency adjustment )
Equipments required
. Frequency counter
. Adjusting driver
Adjusting point
A B C
1
RV1301
2
RV1302 RV1300
3
D701
TP1302
4
5
CPU-353 board (A side)
2-2
D E
D403
D402
D401
D400
TP201
S100
S500
D500
D503
D502 D501
Adjustment procedure
About the choices for the operations frequency
(1) Start up normally.
(2) Push the "SETUP" button, and the unit enters the
SETUP menu mode.
(3) Push the "ENTER" button, while the "[SYNC]" will
be displayed on the LCD screen, and unit enters the
SYNC submenu.
(4) Move the cursor to the lower row using the "↓" button,
and select the "INTERNAL" using the "+/_" buttons.
(5) Move the cursor to the upper row using the "↑" button,
and select the either frequency of the 48 kHz, 44.1 kHz
and 47.952 kHz using the "+/_" buttons.
(6) Push the "ENTER" button.
(7) "?" appears to ask you to confirm whether or not the
settings are to be changed. Push the "ENTER" button
again to set the frequency, and the operations frequen-
cy are changed.
Frequency adjustment
(8) Connect the frequency counter to the TP1302 on the
CPU-353 board.
(9) Adjusts the RV1300, RV1301 and RV1302 so that the
sampling frequency compared with setting Fs is
satisfied to following specifications.
Fs [kHz]setting Specification
4.41 ± 0.00004 MHz
*
44.1, 88.2
4.8 ± 0.00004 MHz
*
48, 96
4.7952 ± 0.00004 MHz
47.952
* : When adjust by the Fs settings of 44.1 kHz and 48 kHz, there are no
necessity for adjustment by the Fs settings of 88.2 kHz and 96 kHz.
Adjusting point
1RV1300
1RV1301
1RV1302
SIU-100/100T