Deck Section - Panasonic RX-ES29EE Service Manual

RX-ES29EE

13.2. Deck Section

· HEAD AZIMUTH ALIGNMENT
Test Tape Indicator (Electronic
Voltmeter or oscilloscope)
QZZCFM Headphone Jack
(8 kHz, -20 dB) (32Ω)Fabricate the plug as
shown in Fig. 2 and then
connect the lead wires of the
plug to the measuring
instrument.
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
QZZCWAT Headphone Jack
(3 kHz, -10 dB) (32Ω)Fabricate the plug
as shown in Fig. 2 and
then connect the lead
wires of the plug to the
measuring instrument.
· 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 "lREC / STOPn" 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 "lREC / STOPn" key).
3. Adjust CP1301 so that the output frequency is within the standard value.
Standard value: 100 ± 7kHz
Adjustment
Azimuth Screw 1. Insert a test tape (QZZFCM) and start playback in the forward direction.
(Shown in Fig. 3) 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.
Adjustment Specifi- cation
— 3000 ± 90 Hz Playmode
38
Remarks
Remarks