Adjustment; Deck Section; Adjustment Condition - Pioneer XV-GX3 Service Manual

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6. ADJUSTMENT

6.1 DECK SECTION

6.1.1 ADJUSTMENT CONDITION

7 Adjustment Condition
(1) The ground at the time of adjustment shall be JA3001(GND)
(Refer to Fig. 6–2).
(2) Clean the heads and demagnetize them using a head eraser.
(3) Set the measurement level to 0 dBV = 1 Vrms.
(4) Use the specified tape for adjustment. Use the labeled (A) side
of the test tape.
NCT–111 or STD-301
NCT-112 or STD-331E
STD–630 or STD-631
* As the reference recording level is 250nwb/m for STD-331E,
the recording level will be higher by 4 dB for STD-331B
(160nwb/m).
When adjusting, pay carefull attention to the type of tape used.
(5) Provide yourself with the following measuring devides:
÷ AC millivoltmeter
÷ Low-frequency oscillator
÷ Attenuator
÷ Oscilloscope
(6) Adjust both right and left channels unless other wise specified.
(7) Warm up the unit for several minutes before adjustment. In
particular, be sure to warm up the unit in the REC/PLAY mode
for 3 to 5 minutes before starting recording/playback frequency
characteristics adjustment.
(8) Always follow the indicated adjustment order.
Otherwise, a complete adjustment may not be achieved.
0 dB 30s
0 dB: 315 Hz, 250 nwb/m
30 s
315 Hz
6.3 kHz
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: For Tape Speed adjustment
: For Playback adjustment
: Normal blank tape
30 s 30 s 10s 10s .......................................................................................................... 10s
12.5
10 kHz 315 Hz 14 kHz
kHz
Fig. 6-1 Test Tape NCT– 112 ( STD-331E)
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7 List of Adjustments
¶ Playback Section
(1) Tape Speed Confirmation
(2) Head Azimuth Adjustment
¶ Recording Section
(1) Recording Bias Adjustment
6.3
10 kHz 8 kHz 4 kHz 2 kHz 1 kHz
kHz
XV-GX3
7
8
–20 dB
500 250 125
63 Hz 40 Hz
Hz Hz Hz
8
A
B
C
D
E
F
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