Cue Record Level Adjustment - Sony HDW-750 Maintenance Manual

10-3. CUE Audio Alignment

10-3-4. CUE Record Level Adjustment-1

Preparation
. AUDIO SELECT switch CH1/inside panel → AUTO
. CUE IN SELECT switch/inside panel → CH1
. Connect sine wave of 1 kHz at +4 dBu to AUDIO CH1
connector/rear panel.
Adjustment Procedure
1. Insert a working tape and enter the REC mode.
(Record a working tape for about 20 seconds.)
2. Playback the recorded segment of a working tape.
3. Equipment : Audio analyzer
Measurement point : AUDIO OUT connector/
rear panel
CH1 (X) : Pin-2
CH1 (Y) : Pin-3
GND :
Confirm that the audio level "A" is 0.4 ± 0.2 dBm (600 Z).
If the audio level "A" is outside the range of 0.4 ± 0.2
dBm (600 Z), take note of the audio level "A" and
proceed to step 4.
4. Rewind a working tape and playback the recorded
segment of a working tape again.
5. Equipment : Audio analyzer
Measurement point : TP501 (B-5)/FP-121 board
(B side)
GND : E501 (C-6)/FP-121 board
(B side)
Measure the audio level "B".
6. Compensate the amount of deviation that the playback
signal is deviated from the specifications.
Equipment : Audio analyzer
Measurement point : TP501 (B-5)/FP-121 board
(B side)
GND : E501 (C-6)/FP-121 board
(B side)
Adjustment point : 1RV503 (C-4)/FP-121 board
(B side)
B_ (A_0.4) ± 0.2 dBu
Specifications :
7. Enter the REC mode. (Record a working tape for about
20 seconds.)
8. Playback the recorded segment of a working tape.
10-10
Pin-1
9. Equipment : Audio analyzer
Measurement point : AUDIO OUT connector/
rear panel
CH1 (X) : Pin-2
CH1 (Y) : Pin-3
GND :
Confirm that the audio level is 0.4 ± 0.2 dBm (600 Z).
If the audio level does not satisfy the specifications,
repeat the procedure starting from step 3 again.
G F E
TP806
TP812
TP804
TP803
S202
S102
RV152
RV151
TP4
TP3 TP401
RV11
TP6 TP5
Pin-1
D
C
1
TP813
A
TP810
B
TP811
RV502
TP201
RV501
S502
TP102
TP101
TP202
S504 S505
RV503
TP302
TP501
E501
FP-121 board (B side)
HDW-750/750CE V1
2
3
4
5
6