Technics RS-615US-D - Page 18

MEASUREMENT & ADJUSTMENT REMARKS
Adjustment for CrOz tape
If measured value decreases at middle and high frequency range by “CrO2”
tape, this adjustment can be taken by 2 methods as follows.
1. Adjustment for slightly increasing the frequency response Note:
If measured value decreases slightly at middle and high frequency | @ This adjustment can be
range by "CrOz” tape as shown in fig. 34, P.C.B. connection points done for each channel.
(@ or ® for F, R-CH, © or @ for G, L-CH) should be shorted to
increases high frequency range for recording equalizer amplifier (See
fig. 32).
@ Low frequency range
won't be varied.
Se
1kHz 2kHz
Fig. 34
The corrected value
LkHz | 4kHz 1OkHz | 12kHz
about about about about
OdB +0.4dB | +0.8dB | +1.0dB } +1.0dB
2. Adjustment for extremely increasing the frequency response
If measured value decreases extremely at middle and high frequency
range by “CrOz’ tape as shown in fig. 35, P-C.B. connection points
(@ and © for F, R-CH, © and @ for G, L-CH) should be shorted
(See fig. 32).
eee
1kHz 2kHz
Fig. 35
The corrected value
AkHz 8kHz 10 kHz 12kHz
about about about about
+1.5dB | +2.0dB | +2.0dB | +2.0dB
17