(Product reference value: 3,000±90Hz)
1. Connect a frequency indicator. (Fig 10)
2. Playback the middle portion of the test tape (QZZCWAT).
3. Adjust the motor screw so that the following output level is produced. (Fig 11)
Adjustment Range: 3,000 ± 90Hz (a constant speed)
Fig. 10
Fig. 11
13.1.5. Bias Voltage Check
1. Connect an electrical voltmeter. (Fig 12) (Fig 9 for location of Test point)
2. Set the function to “TAPE” position.
3. Insert a normal blank cassette tape (QZZCRA).
4. While pressing and holding down [REC (
)] button, press [TAPE (
)] button to pause the recording mode. (Repeat
pressing the buttons till the recording pause mode is activated.)
5. Check that the output level is within the standard range.
Standard Range: 20 ± 3mV
Fig. 12
13.1.6. Bias Frequency Check
1. Connect a digital frequency counter (Fig 13).
2. Set the function to “TAPE” position.
3. Insert a normal blank cassette tape (QZZCRA) and press “REC” mode on main unit.
4. Check that the output frequency is within the standard range.
Standard Value: 100 ±8 kHz
Fig. 13
70
SA-AK770PL / SA-AK770GCP
Содержание SA-AK770GCP
Страница 7: ...7 SA AK770PL SA AK770GCP ...
Страница 10: ...6 Operation Procedures 6 1 Main Unit Key Buttons Operations 10 SA AK770PL SA AK770GCP ...
Страница 11: ...6 2 Remote Control Key Buttons Operations 11 SA AK770PL SA AK770GCP ...
Страница 13: ...6 4 Connecting and Playing a USB Mass Storage Class Device 13 SA AK770PL SA AK770GCP ...
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Страница 25: ...8 3 Main Components and P C B Location 25 SA AK770PL SA AK770GCP ...
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Страница 72: ...14 1 2 Main P C B 14 1 3 Panel P C B 72 SA AK770PL SA AK770GCP ...
Страница 73: ...14 1 4 SMPS P C B 14 1 5 D Amp P C B 14 1 6 Deck P C B Deck Mechanism P C B 73 SA AK770PL SA AK770GCP ...
Страница 74: ...14 1 7 Tact Switch P C B Mic P C B 14 1 8 Jupiter USB P C B 74 SA AK770PL SA AK770GCP ...
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Страница 76: ...14 2 Waveform Chart 76 SA AK770PL SA AK770GCP ...
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Страница 121: ...22 Exploded Views 22 1 Cabinet Parts Location SA AK770PL SA AK770GCP 121 ...
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Страница 123: ...22 2 Deck Mechanism Parts Locations RAA4407 S SA AK770PL SA AK770GCP 123 ...
Страница 124: ...22 3 Packaging SA AK770PL SA AK770GCP 124 ...