Pioneer CT-F10, Руководство по обслуживанию

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23
CT-F10
NCT-111 (3 kHz)
No Adjustment
No. Mode Input Signal/Test Tape Adjustment Points Measurement Points Adjustment Value Remarks
PLAY 1
PB OUT
(PBR:W149)
(MAIN ASSY)
3000 Hz+90Hz
(1) Tape Speed Confirmation
(1) Recording Bias Adjustment
• After the adjustment, caution should be exercised so as not to become under bias by checking the distortion rate.
NCT-132X
(10 kHz, –20dB)
Head azimuth
No adjustment
Remarks
PLAY 1
PB L cH(W150)
PB R cH(W149)
(MAIN ASSY)
(2) Head Azimuth Confirmation
• This unit is equipped with auto tape selector.
• Do not switch between forward and reverse operation with the screwdriver inserted.
6.2.1 Playback Section
VR2301
PLAY 1
(3) Playback Level Adjustment
• Since this adjustment determines playback DolbyNR level, Perform it carefully.
L ch
R ch
VR2302
6.2.2 Recording Section
FWD.VR2821
1
Input a 315Hz (-26dBv)signal to
the REC IN terminal .
(W147:REC L) (W151: REC R)
L ch
R ch
FWD.VR2822
–6.0 dBV
–26 dBV
REC
=
PLAY
2
Load the STD–633 test tape and
record/playback the 315Hz and
10kHz signals. (see the Note below)
Repeat adjustment until playback level of
the 10kHz signal is within -0.5dB
±
0.5dB
from that of the 315Hz signal.
(2) Recording Level Adjustment
VR2401
1
L ch
R ch
VR2402
Input signal level
–10 dBV
REC
=
PLAY
2
• STD–633 test tape and record/
playback the 315Hz signal.
• DOLBY NR : OFF
Repeat recording, playback and
adjustment until playback level of the
315Hz signal becomes –10dBV
±
0.5dB.
Note: Set the 10kHz input signal level to the same value as the 315Hz input signal level of step 1.
No. Mode Input Signal/Test Tape Adjustment Points
Measurement
Points
Remarks No. Mode Input Signal/Test Tape Adjustment Points
Measurement
Points
Adjustment
Value
NCT-132X test tape
(Playback: 315 Hz, 0 dB)
Remarks
No. Mode Input Signal/Test Tape Adjustment Points
Measurement
Points
Adjustment
Value
Remarks
No. Mode Input Signal/Test Tape Adjustment Points
Measurement
Points
Adjustment
Value
REV Confirmation
( 3000 Hz
+
90Hz )
– 60Hz
PLAY 1
(4) Playback Frequency Characteristics Confirmation
Remarks No. Mode Input Signal/Test Tape Adjustment Points
Measurement
Points
Adjustment
Value
NCT-132X test tape
Check that the frequency
characteristics is within the
range of Fig. 6-2.
Input signal level
*
: In case of adjustment as a single unit, enter the signal at W147(RECL)and W151(RECR) ofMAIN ASSY. At this time, connect an output
buffer amplifier to the oscillator, and then connect a series resistor (180
Ω
) after the impedance has become sufficiently low. (For MPX
filter impedance matching)
- 60Hz
FWD / REV
Confirmation
PB L cH(W150)
PB R cH(W149)
(MAIN ASSY)
FWD Adjstment
REV Confirmation
( – 6.0 dBv
±
2.0dB )
PB L cH(W150)
PB R cH(W149)
(MAIN ASSY)
PB L cH(W150)
PB R cH(W149)
(MAIN ASSY)
REV.VR2823
REV.VR2824
Input a 315Hz (-10dBv)signal to
the REC IN terminal .
(W147:REC L) (W151: REC R)
PB L cH(W150)
PB R cH(W149)
(MAIN ASSY)
*
*