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4.
Recording Level Adjustment
Adjustment location
Measuring location
Adjustment value
Remarks
TP. 1 (Leh)
TP. 2 (Reh)
- 15.2 dBv
Input signal & test tape
signal to the line Input
Set the DOLBY NR switch to the ON position. (DOLBY B)
Set the TAPE SELECTOR switch to the NORM position.
Apply a 315 Hz/O dBv
Rec Level control volume
terminals, load the
STD-630 test tape.
Record the above signal
VR107 (Leh)
VR108 (Loh)
onto the STD-630 test
tape, and playback.
TP. 3 (Leh)
TP. 4 (Rch)
Repeatedly record,
playback and adjust so
that the playback signal
level becomes
— 14.6 dB.
Set the TAPE SELECTOR switch to the CrOz position.
tape, and playback
Record the above signal
Check
onto the STD-620 test
TP. 3 (Lch)
TP. 4 (Reh)
—~14.6
dBv
+0.9
14.6
dBv n 04 dB
Le.
Set the TAPE SELECTOR switch to the METAL position.
Record the above signal
onto the STD-610 test
tape, and playback.
Level Meter Adjustment
5.
[No. | Mode
|
Input signal & test tape
Adjustment location
TP. 3 (ich)
TP. 4 (Reh)
Measuring location
- 14.6 dBv *9:9 ap
Adjustment value
Remarks
VR105 (Leh)
VR106 (Reh)
1. | REC
Apply a 315 Hz/— 10 dBv
PAUSE
(316 mV) signal to the
Line Input terminals.
6.
DC Balance Adjustment
No.
VR109 (ich)
VR110 (Rch)
TP. 1 (ich)
TP. 2 (Reh)
TP17 (Lch)
OV+0.2V
TP18 (Reh)
Check that the level
meters "O dB" light up
within — 15.2 dBv
+ 1.0 dB of the signal
output level.
Input signal & test tape
Adjustment location
Adjustment value
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