Panasonic AG-6124 Service Manual page 30

4
ELECTRICAL ADJUSTMENT
4-2-11. AUDIO BIAS CURRENT ADu.
BOARD | MAING.BA.
HOT:TP4001 (I-1), COLD:TP4002(1-2)
aos vraoone
TAPE BLANK TAPE
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Pp omea [ves
| SPEC. | 3.0 + 0.1mVrms
1. Place the unit in recording mode without audio
signal.
2. Connect the VTVM to TP4001(HOT) and
TP4002(GND).
3. Adjust VR4001 so that level becomes 3.0 + 0.1
mVrms.
4-2-12. AUDIO PLAYBACK GAIN ADJ.
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| aneur | ret, 1008 SREWAVE SIGNAL
[wove [RECs PAY
a
[—srec. [ose
1. Supply a 1kHz, -10dB sinewave signal to audio
input.
2. Place the unit in recording mode with sine wave
signal.
Connect the VTVM to audio output.
Playback the just recorded portion.
Adjust VR4006 so that playback level becomes -
SdBV + 1 dB.
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