Audio System Adjustment; Rts Intercom Adjustment Check - Sony HSCU300RF Service Manual

5-2.

Audio System Adjustment

5-2-1.

RTS Intercom Adjustment Check

Precautions
• This adjustment is described on condition that the audio oscillator output impedance is 600 Ω.
• Potentiometers RV1050 and RV1051 on the DPR-361 board have been adjusted according to the customer's system.
Check this adjustment only when the system intercom output is repaired.
A B C
DPR-361 board (Side A)
Preparation
Note
For HSCU300R, remove the DM-152 board and make adjustment.
CCU CONFIGURATION menu setting
Page name
C06: INTERCOM
C07: FRONT INCOM
Check (PROD CANCEL)
1. Set the INTERCOM switch on the front panel to PROD.
2. Input a sine wave (1 kHz, 220 mVp-p (-20 dBu)) to pin 2 (X), pin 1 (Y), and pin 3 (G) of the INTERCOM connector
from the audio oscillator.
Audio oscillator
600 Ω
GND
HSCU300RF/HSCU300R
D E F G
1
2
3
4
TP1051 TP1050
5
6
RV1050 RV1051
7
8
Item
SYSTEM I/F
INCOM MIC
INTERCOM connector
(Front panel)
1
5
4 2
3
Settings
RTS
CARBON
5-3