Panasonic RX-ES29GS, Руководство по обслуживанию

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15.2. Deck Section
· HEAD AZIMUTH ALIGNMENT
Test Tape Indicator (Electronic
Voltmeter or oscilloscope)
Adjustment Remarks
QZZCFM
(8 kHz, -20 dB)
Headphone Jack
(32
Ω )Fabricate the plug as
shown in Fig. 2 and then
connect the lead wires of the
plug to the measuring
instrument.
Azimuth Screw
(Shown in Fig. 3)
1. Insert a test tape (QZZFCM) and start playback in the forward direction.
2. Adjust the azimuth screw for maximum waveform on the oscilloscope
and the similar output on L and R channels.
3. When adjusting the azimuth in the reverse direction, repeat the
adjustment several times because of a little slip on the forward direction
side.
CAUTION:
· Please remove the screw-locking bond left on the head base when replacing the azimuth screw.
· After the adjustment, apply screw lock to the azimuth adjusting screw. (Screw-locking bond: RZZ0L01)
· TAPE SPEED ALIGNMENT
Test Tape Equipment Connection
Electronic Counter
Adjustment Specification Remarks
QZZCWAT
(3 kHz, -10 dB)
Headphone Jack
(32
Ω
)Fabricate the plug
as shown in Fig. 2 and
then connect the lead
wires of the plug to the
measuring instrument.
— 3000 ± 90 Hz Playmode
· BIAS AND ERASE VOLTAGE CHECK
1. Set the unit to “TUNER MODE” position.
2. Insert the Normal blank tape (QZZCRA) into DECK and set the unit to “REC” mode (use “
l REC / STOP n ” key).
3. Measure and make sure that the output is within the standard value.
4. Insert the CrO2 tape (QZZCRX).
5. Repeat steps 2 and 3.
Bias voltage for Deck (Standard value): 17.3 ± 1mV (Normal)
· BIAS FREQUENCY ADJUSTMENT
1. Set the unit to “TUNER MODE” position.
2. Insert the Normal blank tape (QZZCRA) into DECK and set the unit to “REC” mode (use “
l REC / STOP n ” key).
3. Adjust CP1301 so that the output frequency is within the standard value.
Standard value: 100 ± 7kHz
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RX-ES29GC / RX-ES29GS / RX-ES29GT