Agc Voltage Adjustment (For Vca) - Sony HDW-750 Maintenance Manual

10-2-4. AGC Voltage Adjustment (for VCA)

Preparation
. AUDIO SELECT switch CH1/inside panel → AUTO
. Connect sine wave of 1 kHz at +4 dBu to AUDIO IN
CH1 connector/rear panel.
Adjustment Procedure
1. Equipment : Audio analyzer
Measurement point : TP101 (D-3)/FP-121 board
(B side)
Adjustment point : 1RV12 (E-4)/FP-121 board
(B side)
_20.0 ± 0.1 dBu
Specifications :
2. Equipment : Audio analyzer
Measurement point : TP201 (C-3)/FP-121 board
(B side)
Confirm that the audio signal satisfies the specifica-
tions of _20.0 ± 0.1 dBu.
HDW-750/750CE V1
10-2-5. CH1, CH2 Output Level Adjustment
(Analog EE)
Preparation
. Complete the setting as shown below by using the setup menu.
MENU : MAINTENANCE
PAGE : 07*VTR MODE-2
ITEM : REAR1/WRR VR SEL → SIDE 1
ITEM : REAR2/WRR VR SEL → SIDE 2
. AUDIO SELECT switch CH1/inside panel
→ MANUAL
. AUDIO SELECT switch CH2/inside panel
→ MANUAL
. AUDIO LEVEL CH1 control knob/inside panel
→ Reference position
. AUDIO LEVEL CH2 control knob/inside panel
→ Reference position
. Connect sine wave of 1 kHz at +4 dBu to AUDIO IN
CH1 connector/rear panel.
. Connect sine wave of 1 kHz at +4 dBu to AUDIO IN
CH2 connector/rear panel.
Adjustment Procedure
1. Equipment : Audio analyzer
Measurement point : TP101 (D-3)/FP-121 board
(B side)
Confirm that the audio signal satisfies the specifica-
tions of _20.0 ± 0.1 dBu.
2. Equipment : Audio analyzer
Measurement point : TP201 (C-3)/FP-121 board
(B side)
Confirm that the audio signal satisfies the specifica-
tions of _20.0 ± 0.1 dBu.
3. Equipment : Audio analyzer
Measurement point : AUDIO OUT connector/
rear panel
CH1 (X) : Pin-2
CH1 (Y) : Pin-3
GND :
Adjustment point : 1RV151 (D-4)/FP-121 board
(B side)
0.0 ± 0.1 dBm (600 Z)
Specifications :
4. Equipment : Audio analyzer
Measurement point : AUDIO OUT connector/
rear panel
CH2 (X) : Pin-4
CH2 (Y) : Pin-5
GND :
Adjustment point : 1RV152 (D-3)/FP-121 board
(B side)
0.0 ± 0.1 dBm (600 Z)
Specifications :
10-2. Audio System Alignment
Pin-1
Pin-1
10-3