Sony CA-755 Maintenance Manual page 39

2-4-7. DYNAMIC MIC Gain Adjustment
Preparations :
. S1/TR-101 board → DYNAMIC
. S2/TR-101 board → NORMAL
. Supply an 1 kHz, 2.2 mV p-p (_60 dBu) sine wave from
the low frequency oscillator to Pin 1 (Y), Pin 2 (X) and
Pin 3 (G) of INCOM/PGM connector of the CA-755/
755P.
To be extended : TR-101 board
Equipment : Oscilloscope/Audio level meter
Low frequency oscillator
Test point : TP1/TR-101 board
Adjustment point : 1RV2 (DYNAMIC LEVEL)/
TR-101 board
: 220 ± 5 mV p-p (_20.0 ± 0.2 dBu)
Specifications
CA-755/755P
2-4-8. Side Tone Level Adjustment
Preparations :
. S1/TR-101 board → DYNAMIC
. S2/TR-101 board → NORMAL
. Supply an 1 kHz, 2.2 mV p-p (_60 dBu) sine wave from
the low frequency oscillator to Pin 1 (Y), Pin 2 (X) and
Pin 3 (G) of INCOM/PGM connector of the CA-755/
755P.
To be extended : TR-101 board
Equipment : Oscilloscope/Audio level meter
Low frequency oscillator
Test point : TP15/TR-101 board
Adjustment point : 1RV4 (SIDE TONE)/
TR-101 board
: 10 ± 2 mV p-p (_46.8 ± 1.6 dBu)
Specifications
2-4. TR-101 Board Adjustment
2-4-7. DYNAMIC MIC Gain Adjustment
2-4-8. Side Tone Level Adjustmen
2-13 (E)