Panasonic SA-NC9GC Service Manual page 76

SA-NC9GC / SA-NC9GS / SA-NC9GCS / SA-NC9GN
13.1.5. Bias Voltage Check
1. Connect an electrical voltmeter. (Fig 12) (Fig 9 for location of test points)
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: 16 ± 3mV
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.
Fig. 10
Fig. 11
Fig. 12
Standard Value: 98 ±8 kHz
Fig. 13
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