Bias Voltage Check; Bias Frequency Check - Panasonic SA-VK880EE-K Service Manual

12.3.

Bias Voltage Check

1. Connect the electrical voltmeter to Pin 3 (signal) & Pin 1 (ground) (Figure 5).
2. Set to "TAPE" mode.
3. Insert a normal blank cassette tape (QZZCRA).
4. While pressing and holding down [
pressing the buttons till the recording pause mode is activated.)
5. Check that the output level is within the standard range.
Standard Range: 14 ± 4mV
12.4.

Bias Frequency Check

1. Connect the digital frequency counter to Pin 3 (signal) & Pin 1 (ground) (Figure 6).
2. Set to "TAPE" mode.
3. Insert a normal blank cassette tape (QZZCRA) and press [
4. Check that the output frequency is within the standard range (standard value: 100±8kHz).
REC] button, press [TAPE(
Figure 5
REC] on main unit.
Figure 6
95
)] button to pause the recording mode. (Repeat