– 12 –
ADJUSTMENT <DECK / FRONT>
1. Tape Speed Adjustment (DECK 1, DECK 2)
Settings : • Test tape : TTA–100 (3kHz)
• Test point : TP5 (Lch), TP6 (Rch)
• Adjustment location : SFR391
Method : Play back the test tape and adjust SFR391 so that the
frequency counter reads 3000Hz ± 5Hz (FWD) and
± 45Hz (REV) with respect to forward speed.
2. Head Azimuth Adjustment (DECK 1, DECK 2)
Settings : • Test tape : TTA–330
• Test point : TP5 (Lch), TP6 (Rch)
• Adjustment location : Head azimuth adjustment screw
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.
3. PB Frequency Response Check (DECK 1, DECK 2)
Settings : • Test tape : TTA–330 (315Hz/8kHz)
• Test point : TP5 (Lch), TP6 (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 0dB ± 4dB.
< DECK SECTION >
1. µ-CON OSC Adjustment
Settings : • Test point : TP7 (K-SCAN)
: TP8 (GND)
• Adjustment location : L501
Method : Insert AC plug while pressing of "POWER" key and
"TUNER" function key. Connect a frequency across
TP7 and TP8. Then adjust L501 so that the frequency
across the test point is 92.5Hz ± 0.1Hz.
< FRONT SECTION >
4. PB Sensitivity Check (DECK 1, DECK 2)
Settings : • Test tape : TTA–200 (400Hz)
• Test point : TP5 (Lch), TP6 (Rch)
Method : Play back the test tape and check that the output level
of the test point is 110mV ± 3.5dB.
5. REC/PB Frequency Response Check (DECK 1)
Settings : • Test tape : TTA–602
• Test point : TP5 (Lch), TP6 (Rch)
• Input signal : 1kHz/8kHz (-20VU)
Method : Apply a 1kHz signal and REC mode. Then adjust
OSC attenuator so that the output level at the test point
becomes 8mV. Record and play back the 1kHz and 8kHz
signal and check that the output of the 8kHz signals is
0dB ± 5dB with respsct to that of the 1kHz signal.
6. REC/PB Sensitivity Check (DECK 1)
Settings : • Test tape : TTA–602
• Test point : TP5 (Lch), TP6 (Rch)
• Input signal : 1kHz (0VU)
Method : Apply a 1kHz signal and REC mode. Then adjust
OSC attenuator so that the output level at the test point
becomes 80mV. Record and play back the 1kHz signals
and check that the output is –2dB ± 3.5dB.
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