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< DECK SECTION >
10. Tape Speed Adjustment (DECK1, DECK2)
Settings:
• Test tape: TTA-100
• Test point: TP8 (Lch), TP9 (Rch)
• Adjustment location: SFR1
Method:
Play back the test tape and adjust SFR1 so that the
frequency counter reads 3000Hz±5Hz and ±45Hz
(REV) with respect to forward speed.
11. Head Azimuth Adjustment (DECK1, DECK2)
Settings:
• Test tape: TTA-300
• Test point: TP8 (Lch), TP9 (Rch)
• Adjustment location: Head azimuth
Method:
Play back (FWD) the 10kHz signal of the test tape
and adjust screw so that the output becomes
maximum. Next, perform on REV PLAY mode.
12. PB Frequency Response Check (DECK1, DECK2)
Settings:
• Test tape: TTA-300
• Test point: TP8 (Lch), TP9 (Rch)
Method:
Play back the 315Hz and 10kHz signals of the test
tape and check that the output ratio of the 10kHz
signal with respect to that of the 315Hz signal is
within 0±3dB.
13. PB Sensitivity Check (DECK1, DECK2)
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 400mV±3dB.
PRACTICAL SERVICE FIGURE
< TUNER SECTION >
< FM SECTION >
IHF Sensitivity:
(THD 3%)
S/N 50dB Quieting sensitivity:
Signal to noise ratio:
Distortion:
Auto stop level:
Stereo separation:
Intermediate frequency:
< MW SECTION >
Sensitivity:
Signal to noise ratio:
Distortion:
Auto stop level:
Intermediate frequency:
All manuals and user guides at all-guides.com
adjustment screw
Less than 10/9/9dBµV
[at 87.5/98.0/108.0MHz]
Less than 35dBµV
[at 98.0MHz]
Mono: More than 68dB
Stereo: More than 66dB
[at 98.0MHz]
Mono: Less than 1.2%
Stereo: Less than 2.0%
[at 98.0MHz]
25dBµV±10dB
[at 98.0MHz]
More than 22dB
[at 98.0MHz]
10.7MHz
Less than 62/58/58dBµV
[at 603/999/1404kHz]
More than 36dB
[at 999kHz]
Less than 1.5%
[at 999kHz]
52dBµV +10/-15dB
[at 999kHz]
450kHz
14. REC/PB Frequency Response Adjustment
Settings:
• Test tape: TTA-602
• Test point: TP8 (Lch), TP9 (Rch)
• Input signal: 1kHz/10kHz (LINE IN)
• Adjustment location: SFR351 (Lch)
Method:
Apply a 1kHz signal and REC mode. Then adjust
OSC attenuator so that the output level at the TP8,
TP9 becomes 0dB (28mV). Record and play back
the 1kHz and 10kHz signals and adjust SFRs so
that the output of the 10kHz signals becomes
0dB±0.5dB with respect to that of the 1kHz signal.
15. REC/PB Sensitivity Check
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 0dB (280mV). Record and play back the
1kHz signals and check that the output is
-1dB±3dB.
< SW SECTION >
Sensitivity:
Overload signal distortion:
< DECK SECTION >
Tape speed:
Wow & flutter:
Take-up torque:
F.F & REW torque:
Back tension:
PB output level:
REC/PB output level:
Distortion (REC/PB):
Noise level (PB):
Noise level (REC/PB):
Erasing ratio:
Test tape:
42
SFR352 (Rch)
Less than 51/45/44dBµV
[at 5.9/12.0/17.9MHz]
Less than 10%
3000Hz±45Hz
Less than 0.15%
(W.R.M.S)
30~55g-cm
(FWD, REV)
75~160g-cm
2~7g-cm
(FWD, REV)
200mV±1dB
-1.0dB±3dB
(0VU, NORM, CrO2)
Less than 2.0%
(0VU, NORM, CrO2)
Less than 1.2mV
(NORM, FILTER DIN AUDIO)
Less than 1.2mV
(NORM, FILTER DIN AUDIO)
More than 60dB
(at 125Hz, +10VU, CrO2)
TTA-602 (NORMAL)
TTA-615 (CrO2)
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