PIONEER XR-NM1/DBDXCN
Instrukcja Serwisowa

X-NM10, XR-NM1

Electrical Adjustment
Check the following before starting.
(1) Confirm that the tape speed adjustment has been completed. (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-132X : For playback check

Playback Adjustment
(1) Head Azimuth Adjustment

* When the tape is played with both of side panel L and R removed (state that reception front is floating from ground). when adjusting , the noise might be superimposed. In this case, the front chassis must short circuit to the CD mechanism cover in the lead wire.

Playback Adjustment
(1) Head Azimuth Adjustment

� Do not switch between forward and reverse operation with the screwdriver inserted.
Step Mode Input Signal/ Test Tape Adjusting Points Measurement Points Adjustment Value Remarks After adjustment, apply silicon bond to the head azimuth adjustment screw. SP OUT CN1 PB L ª ch Max. playback signal level PB R ªch

1

PLAY

N C T - 1 3 2 X t e s t t a p e Head azimuth adjustment (Playback: 10kHz, -20dB) screw (Fig. 4)

0 dB

30s 315 Hz

0 dB: 315 Hz, 250 nwb/m 30 s 6.3 kHz 30 s 10 kHz 30 s 315 Hz 10s .......................................................................................................... 10s �20 dB 12.5 6.3 500 250 125 14 kHz kHz 10 kHz 8 kHz kHz 4 kHz 2 kHz 1 kHz Hz Hz Hz 63 Hz 40 Hz 10s

Fig. 3 NCT-132X Test Tape

FWD Azimuth Adjustment Screw REV Azimuth Adjustment Screw

Fig. 4 Head Azimuth Adjustment

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