Output Limiter Check - Sony HDW-750 Maintenance Manual

10-2-10. Output Limiter Check

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
. S102 (E-3)/FP-121 board (B side) → OFF
. S202 (F-3)/FP-121 board (B side) → OFF
. S504 (B-4)/FP-121 board (B side) → ON
. S505 (A-4)/FP-121 board (B side) → ON
. 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. Connect sine wave of 1 kHz at +24 dBu to AUDIO IN
CH1 connector/rear panel.
4. Connect sine wave of 1 kHz at +24 dBu to AUDIO IN
CH2 connector/rear panel.
HDW-750/750CE V1
5. Equipment : Audio analyzer
Measurement point : AUDIO OUT connector/
rear panel
CH1 (X) : Pin-2
CH1 (Y) : Pin-3
GND :
Confirm that the audio signal satisfies the specifica-
tions of +9.0 ± 0.5 dBm (600 Z).
6. Equipment : Audio analyzer
Measurement point : AUDIO OUT connector/
rear panel
CH2 (X) : Pin-4
CH2 (Y) : Pin-5
GND :
Confirm that the audio signal satisfies the specifica-
tions of +9.0 ± 0.5 dBm (600 Z).
G F E D
TP813
TP806
TP812
TP804
TP803
S202
S102
RV152
TP101
RV151
TP4
TP3 TP401
RV11
TP6 TP5
E501
10-2. Audio System Alignment
Pin-1
Pin-1
C
1
A
TP810
B
2
TP811
RV502
TP201
RV501
3
S502
TP102
TP202
4
S504 S505
RV503
TP302
5
TP501
6
FP-121 board (B side)
10-7