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6-2. APR-12 Board Replacement
2. LAU PB Frequency Response Adjustment (OXIDE)
Measuring equipment: Audio analyzer (dB ratio measurement mode, 80 kHz LPF)
CH1 adjustment
(1) Connect the input of audio analyzer to MONITOR OUTPUT L connector.
(2) Playback the following specified portions (_20 VU) of the alignment tape CR8-1A or CR8-1A PS,
and perform the adjustments and checks. (DNW-A22: CR8-1A, DNW-A22P: CR8-1A PS)
Playback portion
5:00 to 5:55 (1 kHz, _20 VU)
6:00 to 6:25 (40 Hz, _20 VU)
6:30 to 6:55 (7 kHz, _20 VU)
7:00 to 7:25 (10 kHz, _20 VU)
7:30 to 7:55 (15 kHz, _20 VU)
n
If the specification for RV500 is not met, readjust after changing the setting of S500/APR-12(A-1).
CH2 adjustment
(1) Connect the input of audio analyzer to MONITOR OUTPUT R connector.
(2) Playback the following specified portions (_20 VU) of the alignment tape CR8-1A or CR8-1A PS,
and perform the adjustments and checks. (DNW-A22: CR8-1A, DNW-A22P: CR8-1A PS)
Playback portion
5:00 to 5:55 (1 kHz, _20 VU)
6:00 to 6:25 (40 Hz, _20 VU)
6:30 to 6:55 (7 kHz, _20 VU)
7:00 to 7:25 (10 kHz, _20 VU)
7:30 to 7:55 (15 kHz, _20 VU)
n
If the specification for RV600 is not met, readjust after changing the setting of S600/APR-12 (G-1).
A
B
C
A No.
E500
RV504
RV502
TP501
TP500
S500
RV503
RV501
RV500
RV103
TP101
COR101
20 18 16
E100
COR300
16 18 20
COR301
APR-12 Board (Side A)
6-14
Specifications[dB]
DNW-A22
Measured value makes
0 dB (reference).
+0.7
C.V.
_1.7
C.V. ± 0.3
C.V. ± 0.3
+0.3
C.V.
_1.0
The each correction values (C.V.) are given on the label of the alignment tape.
Specifications[dB]
DNW-A22
Measured value makes
0 dB (reference).
+0.7
C.V.
_1.7
C.V. ± 0.3
C.V. ± 0.3
+0.3
C.V.
_1.0
The each correction values (C.V.) are given on the label of the alignment tape.
D
APR–12
E
F
G
LOTNO,
S NO,
E600
RV605
TP601
RV602
TP600
RV603
S600
RV604
RV601
RV600
RV203
TP201
COR201
E200
20 18 16
TP700 TP560
COR400
16 18 20
COR401
DNW-A22P
Measured value makes
0 dB (reference).
+0.7
C.V.
_1.7
C.V. ± 0.4
C.V. ± 0.4
_1.0
C.V.
_1.7
DNW-A22P
Measured value makes
0 dB (reference).
+0.7
C.V.
_1.7
C.V. ± 0.4
C.V. ± 0.4
_1.0
C.V.
_1.7
1
2
3
4
Adjustment point
_
(Check only)
1RV501/APR-12(A-1)
(Check only)
1RV500/APR-12(A-1)
Adjustment point
_
(Check only)
1RV601/APR-12(G-1)
(Check only)
1RV600/APR-12(G-1)
DNW-A22/A22P
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