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<R-P360, XR-P360G
|
@ Electrical Adjustment
Check the following before starting.
L
2.
Confirm that the tape speed adjustment has been completed.
Clean the heads and demagnetize them using a head
eraser.
Playback Adjustment (Decks | and I!)
1. Head Azimuth Adjustment
2. Playback Level Adjustment
-20dB
3. Set the measurement level to 0 dBV = 1 Vrms.
Recording Adjustment (Deck I!)
4, Use the specified tape for adjustment. Use the labeled (A)
1. Bias Oscillation Frequency Adjustment
side of the test tape.
2. Recording Bias Adjustment
STD-331E: For playback adjustment
3. Recording Level Adjustment.
STD-631or STD-632: Normal blank tape
4. ALC Operation Check
5. Provide yourself with the following measuring devides:
@ AC millivoltmeter
@ Low-frequency oscillator
e Attenuator
* As the reference recording level is 250nwb/m for STD-331E,
@ Oscilloscope
the recording level will be higher by 4 dB for STD-331B
6. Adjust both right and left channels unless otherwise
(160nwb/m). When adjusting, pay carefull attention to the
specified.
type of tape used.
7. Turn the DOLBY NR switch off unless otherwize specified.
8. Warm up the unit for several minutes before adjustment.
In particular, be sure to warm up the unit in the REC/
Dolby ies jedietion rnantequeaa under license from Dolby
PLAY mode for 3 to 5 minutes before starting recording/
"DOLBY" and the double: symbol are trademarks of Dolby
playback frequency characteristics adjustment.
Laboratories Licensing Corporation.
9. Always follow the indicated adjustment order.
Otherwise, a complete adjustment may not be achieved.
OdB
30s
0. dB: 315 Hz, 250 nwb/m
30s
30s
30s
10s
10s
S15Hz
125
6.3kHz
1OKHz
S15Hz
14kHz|
OkHz| 8kHz |6.3kKHz) 4kHz | 2kHz | 1kKHz_ sore sor st 63Hz| 40Hz
Fig. 2-1 STD-331E Test Tape
LX©)
FWD Azimuth Adjustment Screw
REV Azimuth Adjustment Screw
Fig. 2-2 Head Azimuth Adjustment
54
PLAY BACK
RECORDING
Fig. 2-3 Frequency Characteristics
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