Recording Level Adjustment - Pioneer CT-F950 Service Manual

6. If outside the specified standards, refer to
..9.6, ERASURE
CURRENT ADJUSTMENT''
and adjust VR303 so that the value is within
the range of 160 + 20mV.
7. Then, confirm that the record/playback fre-
quency response for metal tape is within the
fixed standard range.
8. Set the tape selector switch to CrOz and
using test tape STD-603 as in the previous
instructions, record and play back the 333H2
and 10kHz signals. Then confirm that the
playback output
deviation of
the 1OkHz
signal is within O t 1dB of the B3BHz signal.
If outside the specified standards, adjust
vR302.
9. Then, confirm that the record/playback fre-
quency response for test tape STD-609 is
within the fixed standard range (page 40).
10. Set the tape selector switch to Fe-Cr; record
and play back the 333H2 and 10kHz signals
on a SONY DUAD C-60 and confirm that
they are within
the fixed standard range
(page 40).
11. Set the Dolby switch to ON,
that the record and playback
sponse for all types of tapes
fixed standard range (page 40).
x when making adjustments, also
flow chart on page 37.
and confirm
frequency re-
is within the
refer to the
CT-F9EiCl
9 . 1 1 R E C O R D I N G L E V E L A D J U S T M E N T
NOTE:
Since this adjustment sets the recording leuel, it must
be performed accurately.
1. Set the MONITOR switch to SOURCE, and ap-
ply a 333H2, -10dBv (316mV) signal to the
INPUT terminals.
2. Turn the DOLBY NR switch off. and connect
millivoltmeters to the mother ass'y TP terminals
No.30 (left) and No.29 (rieht). Adjust the IN-
PUT level control so that the meters read -3dBv
( 7 1 0 m V ) .
3. Then set the TAPE switch to the STD position,
and turn the DOLBY NR switch on, and also
change the MONITOR switch to the TAPE
position. Record the 333H2 -10dBv (316mV)
signal onto the STD-601 test tape, and adjust
VRzos (left) and VRzoe (right) so as to obtain
millivoltmeter readings of -2.5dBv (750mV).
during playback.
4. Set the TAPE switch to CrOz, and then to
METAL, and record the
333H2, -10dBv
(316mV) signal onto the STD-603 test tape
and the STD-604 test tape respectively as
described above under step 3. During playback
with both tapes, check tbat millivoltmeter
readings are within -3dBv (710mV) t l.5dB
in the both cases.
@ @
@ @
t,.,gu;
Fig. 9-6
Adjustment points