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4.5
Tuner section (E/EN version)
Item
Measuring condition
AM IF adjustment
Signal input :
Loop antenna
Signal output :
IC602 pin 18
AM tracking
Signal input :
adjustment
Loop antenna
signal output :
H.phone out
(with 32 ohm load)
FM tracking
Signal input :
Analog antenna
FM ANT
Fm GND
signal output :
H.phone out
(with 32 ohm load)
4.6
Location of adjusting parts
Cassette mechanism section
(caution) For adjusting any head, be sure to use a screw driver degaussed.
max
Head output signal
Main board
1-30 (No.MB306)
Check and adjustment procedure
1. Set the intermediate frequency sweep
generator to AM 450 kHz.
2. Adjust IFT603 for maximum and center
output
1. Set the TUNER at 522 kHz adjust IFT602
until the test point TP13 voltage at
1.3V+/-.1V.
2. Set the TUNER at 1629 kHz, check the test
point TP13 voltage at 7.0 to 8.0 V.
3. Set the TUNER and S/G at 603 kHz, adjust
IFT604 for maximum output.
4. Set the TUNER and S/G at 1404 kHz, adjust
the VC601 for maximum output.
5. Repeat the avobe step 3 and 4.
FM IF :
1. Set the TUNER at FM mode
2. Adjust IFT606 to make the test point (TP4)
swave symmetry.
FM VT :
Check test point TP14 to make sure the voltage
1.5-8.5V.
Adjustment
Head
Azimuth adjustment screw
Main board
REC-F
REC-G
Standard value
Cassette motor
Tape speed adj.
(BIAS FREQUENCY)
T100
Adjusting part
IFT603
IFT602
IFT604
VC601
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