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T - 1 2 - 7 0 W R C B K 3
5
Set the T A P E S E L E C T O R switch to the C r O j position.
6
R E C /
P L A Y
Record the above signal onto
the STD-620 test tape, and
playback.
j
Confirm
1 R E C D O L , L (Lch)
R E C D O L , R (Rch)
-13.5dBv±1.5dB
7
Set the T A P E S E L E C T O R switch to the M E T A L position.
8
R E C /
;
P L A Y
Record the above signal onto
the S T D - 6 1 0 test tape, and
playback.
Confirm
j R E C D O L , L (Lch)
'
R E C D O L , R (Rch)
-13.5dBv±1.5dB
8. Recording and Playback Frequency Response Check
No.
Mode
Input signal & test tape
Adjustment location
Measuring location
Adjustment value
Remarks
1
S T O P
Set the T A P E S E L E C T O R switch to the NORM position.
2
R E C /
P L A Y
S T D - 6 0 8 A (NORM)
N R : O F F / O N ( T Y P E B, C)
- • -
L I N E O U T
The allowable zone shown in
Fig. 11-9 is to be satisfied.
1
3
Set the T A P E S E L E C T O R switch to the CrOj position.
4
R E C /
P L A Y
STD-620 ( C r O J
N R : O F F / O N ( T Y P E B, C)
-
L I N E O U T
The allowable zone show in
Fig. 11-9 is to be satisfied.
5
S T O P
Set the T A P E S E L E C T O R switch to M E T A L position.
6
R E C /
P L A Y
STD-610 ( M E T A L )
N R : O F F / O N ( T Y P E B, C)
-
L I N E O U T
The allowable zone shown in
Fig. 11-9 is to be satisfied.
9. Copy Mode Frequency Response Check
y .
•
•
Playback after making copy should be carried out by on the R E C / P B side.
,
, - ; f ; ; / l
r - -
No.
Mode
Input signal & test tape
Adjustment location
Measuring location
Adjustment value
j
Remarks
1
S T O P
Set the T A P E S E L E C T O R switch to the NORM position.
2
C O P Y &
H I G H
S P E E D
Load the S T D - 3 3 1 B test tape
into deck 1, and the S T D -
608A test tape into deck I I .
—
—
Copy recorded signal from STD-331 B (at
both normal and doublé speeds).
3
P L A Y
(Deck
II)
Play the signal recorded on
the S T D - 6 0 8 A test tape
in the previous adjustment
procedure.
L I N E O U T
The allowable zone shown
in F i g . 11 -10 is to be satisfied.
4
S T O P
Set the T A P E S E L E C T O R switch to the C r O j position.
5
Load the STD-620 test tape into deck I I , and repeat steps 1 and 2 to check that the allowable zone shown in Fig. 11-10 is satisfied.
6
S T O P
Set the T A P E S E L E C T O R switch to the M E T A L position.
7
Load the S T D - 6 1 0 test tape into deck 11, and repeat steps 1 and 2 to check that the allowable zone shown in Fig. 11-10 is satisfied.
10. Level Meter Check
No.
Mode
1
Input signal & test tape
Adjustment location
Measuring location
Adjustment value
Remarks
1
R E C -
P A U S E
Apply a 3 1 5 H z / - 1 0 d B v
(316mV) signal to the L I N E
I N P U T terminals.
R E C L E V E L control
R E C D O L , L (Lch)
R E C D O L , R (Rch)
Check that the level meters " O d B " light up
within -13.5dBv+2dB of the signal output
level.
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