Hitachi D-550 Serviceanleitung Seite 15

Bias trap adjustment
1. Setting — Recording mode
eh Ke
a
RV2L,R Output level controls
C52L IR}
iene
L4L.R Within 1dB
of min. value
Bias current adjustment
1. Setting— Recording mode
Far Ra a
$2 Equalizer select switch
Bias select switch
Dolby N.R switch OFF
Record level controls Maximum
Fig. 41
|_B-550B5, Fs, W
2:
Renae
Recording/playback output level adjustment
1. Setting—Recording/playback mode
RV2L,R Output level controls | Maximum |
VU Meter
Normat tape
(BASF)
Frequency counter
Line in jack
@ jo vu 1 kHz
@ | 0 VU-20 dB | 1 kHz/10 kHz
VU Meter
— 4+
2 Fig. 42
Reading
@|RT2L.R | OvU
Remarks
Remarks
Check the output levels of two
signals (1-kHz/10 kHz).
The difference between two signals
should be also within +1.5 dB. If
the difference is not withm +1.5 dB,
re adjust RT4L, R.
Dolby N. R adjustment
1. Setting—Recording mode
Symbol No. Switches and controls Position
Equalizer select switch NOR
Bias select switch MID
Input select switch DIN/LINE
Dolby N.R switch OFF ~ON
Record Jevel control Maximum
Output level control Maximum
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