Practical Service Figure; Tuner Section; Deck Section - Aiwa LCX-357 Service Manual

< DECK SECTION >
1. Tape Speed Adjustment
Settings: • Test tape: TTA-100
• Test point: SP-OUT 2V
• Adjustment location: SFR1
Method: Play back the test tape and adjust SFR1 for
3000Hz±5Hz (FWD) and FWD PLAY
speed±45Hz (REV).
2. Head Azimuth Adjustment
Settings: • Test tape: TTA-300
• Test point: SP-OUT 2V
• Adjustment location: Head azimuth
Method: Play back the 8kHz signal of the test tape and
adjust screw so that the output becomes
maximum. Next, Perform on each FWD PLAY
and REV PLAY mode.
3. PB Frequency Response Check
Settings: • Test tape: TTA-320
• Test point: SP-OUT 2V
Method: Play back the 315Hz and 10kHz signals of the
test tape and check that the 10kHz signal with
respect to that of the 315Hz signal is 0dB±3dB.
4. REC/PB Frequency Response Check
Settings: • Test tape: TTA-602
• Test point: SP-OUT 2V
Method: Input a-20VU signal to the AUX terminal.
Record the 1kHz and 10kHz signals on the test
tape and play back them. Check that the
difference between the record level and the
play back level at 1kHz and 10kHz signal is
0dB to ±3dB.
DECK C.B
SFR1
1
DECK R/P/E HEAD
2 2
REV FWD
adjustment screw
CON1

PRACTICAL SERVICE FIGURE

< TUNER SECTION >
< FM SECTION >
IHF Sensitivity:
(THD 3%)
Signal to noise ratio:
(Input 54dB)
Distortion:
(Input 54dB)
Auto stop level:
Stereo separation:
Intermediate frequency:
< AM (MW) SECTION >
Sensitivity:
(S/N 10dB)
Signal to noise ratio:
(Input 74dB)
Distortion:
(Input 74dB)
Auto stop level:
Intermediate frequency:
< DECK SECTION >
Tape speed:
Wow & flutter:
Pinch roller pressure:
Take-up torque:
FF & REW torque:
Back tension:
Distortion:
Noise level:
Erasing ratio:
Test tape:
31
15dB±5dB (at 90.0MHz)
14dB±5dB (at 98.0/106.0MHz)
More than 60dB
(at 98.0MHz)
Less than 1.2%
(at 98.0MHz)
25±10dB (at 98.0MHz)
More than 20dB (at 98.0MHz)
10.75MHz
46±5dB (at 600kHz)
44±5dB (at 1000kHz)
42±5dB (at 1400kHz)
More than 33dB
(at 999kHz)
Less than 3.0%
(at 999kHz)
50+10/-15dB (at 1000kHz)
450kHz
3000Hz±45%
Less than 0.14%
(W.R.M.S)
270-330g
30-55g-cm (FWD, REV)
75-180g-cm
2-7g-cm (FWD, REV)
Less than 3.0%
(REC/PB, 0VU)
Less than 80mV
(PB, REC/PB,
FILTER DIN AUDIO)
More than 55dB
(at 125Hz, +10VU)
TTA-100
TTA-602 (NORMAL)