Aiwa NSX-BL14 Service Manual page 35

< DECK SECTION >
12. Tape Speed Adjustment (DECK 1)
Settings : • Test tape : TTA–100
• Test point : TP8(Lch), TP9(Rch)
• Adjustment location : SFR701
Method : Play back the test tape and adjust SFR701 so that the
frequency counter reads 3000Hz ± 5Hz.
13. Head Azimuth Adjustment (DECK 1, DECK 2)
Settings : • Test tape : TTA–330
• Test point : TP8(Lch), TP9(Rch)
• Adjustment location : Head azimuth
Method : Play back (FWD) the 8kHz signal of the test tape and
adjust screw so that the output becomes maximum.
Next, perform on REV PLAY mode.
14. PB Frequency Response Check (DECK 1, DECK 2)
Settings : • Test tape : TTA–330
• Test point :TP8(Lch), TP9(Rch)
Method : Play back the 315Hz and 8kHz signals of the test tape
and check that the output ratio of the 8kHz signal with
respect to that of the 315Hz signal is within 4dB.
15. PB Sensitivity Check (DECK 1, DECK 2)
Settings : • Test tape : TTA–200
• Test point : TP8(Lch), TP9(Rch)
Method : Play back the test tape and check that the output level of
the test point is 110mV ± 3.5dB.
16. REC/PB Frequency Response Check (DECK 1)
Settings : • Test tape : TTA–602
• Test point : TP8(Lch), TP9(Rch)
• Input signal : 1kHz / 8kHz (LINE IN)
Method : Apply a 1kHz signal and REC mode. Then adjust OSC
attenuator so that the output level at the test points
becomes -20VU. Record and play back the 1kHz and
8kHz signals and check that the output of the 8kHz
signals is 0dB ± 5dB with respect to that of the 1kHz
signal.
adjustment screw
17. REC/PB Sensitivity Check (DECK 1)
Settings : • Test tape : TTA–602
• Test point : TP8(Lch), TP9(Rch)
• Input signal : 1kHz (LINE IN)
Method : Apply a 1kHz signal and REC mode. Then adjust OSC
attenuator so that the output level at TP8, TP9 becomes
0VU. Record and play back the 1kHz signals and check
that the output is -2dB ± 3.5dB.
< FRONT SECTION >
18. u-CON OSC Adjustment
Settings : • Test point : TP5(K-SCAN)
• Adjustment location : L101
Method : Insert AC plug with pressing of TUNER function key
and POWER key. Adjust L101 so that the frequency
across the test point is 58.350Hz ± 0.02Hz.
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