Panasonic SA-VKX80GA, Руководство по обслуживанию

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12 Measurements & Adjustments
12.1. Deck Mechanism Section
• HEAD AZIMUTH ALIGNMENT
Caution:
• Please remove the screw-locking bond left on the head base when replacing the azimuth screw.
• After the adjustment, apply screwlock to the azimuth adjusting screw. (Screw-locking bond: RZZ0L01).
• Minimum screw-lock apply on screws must be 180
°
around the screw.
Fig. 1 Fig. 2
• TAPE SPEED CHECKING
Fig. 3 Fig. 4
13 Voltage & Waveform Chart
Note:
• Indication Voltage Values are in standard values for the unit measured by the DC electronic circuit tester (high-impedance) with
the chassis taken as standard.
Therefore, there may exist some errors in voltage values, depending on the internal impedance of the DC circuit tester.
• Circuit voltage and waveform described herein shall be regarded as reference information when probing defect point because it
may differ from actual measuring value due to difference of Measuring instrument and its measuring condition and product itself.
TEST TAPE INDICATOR (ELECTRONIC VOLTME-
TER or OSCILLOSCOPE)
ADJUSTMENT REMARKS
QZZCAB
(~ 3 dB)
Headphone Jack (32
Ω
)
Fabricate the plus as shown in Fig. 1 and
then connect the lead wires of the plug to
the measuring instrument.
Azimuth Screw
(Shown in Fig. 2)
1. Insert the test tape (QZZCAB) and start playback at maximum
volume & equalize at “FLAT”.
2. Adjust the azimuth screw for maximum waveform on the oscil-
loscope and the similar output on L and R channels.
3. When adjusting the aizmuth in the reverse direction, repeat
the adjustment several times because of a little slip on the for-
ward direction side.
TEST TAPE INDICATOR (ELECTRONIC VOLTME-
TER or OSCILLOSCOPE)
ADJUSTMENT SPECIFICATION REMARKS
QZZCWAT
(3kHz, -10 dB)
Headphone Jack (32
Ω
)
Fabricate the plus as shown in Fig. 3 and
then connect the lead wires of the plug to
the measuring instrument.
Motor VR.
(Shown in Fig. 4)
3000±90Hz 1. Insert the test tape (QZZCWAT) and start play-
back.
2. Check the output at headphone or speaker.