Pioneer XR-VS500D Service Manual page 130

0 dB
30s
0 dB: 315 Hz, 250 nwb/m
30s
315Hz
6.3kHz 10kHz
Playback Adjustment
(1) Head Azimuth Adjustment
• Do not switch between forward and reverse operation with the screwdriver inserted.
Input Signal/
Step Mode
Test Tape
STD-331E test tape
1 PLAY
(Playback: 10kHz,
–20dB)
(2) Playback Level Adjustment
• Since this adjustment determines playback dolby NR level, perform it carefully.
Input Signal/
Step Mode
Test Tape
STD-331E test tape
1
PLAY
(Playback: 315Hz, 0dB)
REV Azimuth Adjustment Screw
Fig. 5 Head Azimuth Adjustment Screw
30s 30s 10s 10s ......................................................................................................... 10s
12.5
315Hz 14kHz
kHz
Fig.4 STD-331E Test Tape
Adjusting Points
Deck Ι
Head azimuth
adjustment
Deck ΙΙ
screw (Fig. 5)
Adjusting Points
VR2303 (L ch)
Deck Ι
VR2304 (R ch)
VR2305 (L ch)
Deck ΙΙ
VR2306 (R ch)
FWD Azimuth Adjustment Screw
6.3
10kHz 8kHz 4kHz 2kHz
kHz
Measurement Adjustment
Points Value
TAPE TEST
Max. playback
POINT (L, Rch)
signal level
(AF Assy)
Measurement Adjustment
Points Value
TAPE TEST
– 3.7dBV ± 2dB
POINT (L, Rch)
(AF Assy)
250
3dB
250
3dB
Fig. 6 Frequency Characteristics
XR-A9800D
500 250 125
1kHz
63Hz 40Hz
Hz Hz Hz
Remarks
After adjustment, apply silicon bond to
the head azimuth adjustment screw.
Remarks
PLAYBACK
12.5k
10k
3dB 4dB
RECORDING
12.5k
10k
3dB 5dB
–20 dB
77