Sony SX-M100, Руководство по обслуживанию

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5-2(E) SX-M700
5-3. CONNECTING DIAGRAM
. Connect 1 kHz audio signal to any of EXT IN-1 MIC, EXT IN-2 MIC, EXT IN-1 LINE IN, EXT IN-2
LINE IN, pin-10 of DELEGATE’S/CHAIRMAN’S UNIT 1 to 4, or pin-1 of TELEPHONE
COUPLER.
(Input level is about _ 60 dBs when connecting to EXT IN-1/2, or about _ 10 dBs when connecting to
other inputs.)
5-4. PS-364 BOARD, OSCILLATING FREQUENCY ADJUSTMENT
Conditions for adjustment
. Set RV901 (D-3) on the PS-364
board to mechanical center.
. Connect a frequency counter to
the measurement point.
. Turn on the main power.
Adjustment point
1 RV901 (D-3)/PS-364 Board
Specifications
. Measurement point: TP903 (D-4)/PS-364 board
. Adjust RV901 so that the switching frequency satisfies the
specification.
Switching frequency : 100
±
1 kHz
Oscillator
1 kHz
_
60 dBs
_
10 dBs
_
60 dBs
_
10 dBs
PUSH
_
10 dBs
_
10 dBs
Frequency
RV901
low high