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Arrangement of adjusting positions
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Tape recorder section
Measurement
Items
Cassette Head
Test tape :
VT703 (10kHz)
Azimuth Alignments
Measurement
output terminal :
Left and Right
speaker output
(6-ohm loaded)
or Headphone
Output
(32-ohm loaded)
Recording Bias
Test tape :
TYPE I AC-225
Frequency Alignment
Measurement
output terminal :
Erase head
terminal
(CN308 8-Pin)
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Tuner section
Measurement
Items
conditions
AM Tracking
Input signal:
Alignments
530kHz (529kHz)
600kHz (603kHz)
Adjustment
point: Antenna
coil (L2)
AM IFT
Input signal:
Alignments
530kHz (529kHz)
Adjustment
point: IFT (T1)
Note: The adjustment of CD section is not required.
conditions
1. Playback the test tape VT703 (10KHz) or equivalent.
2. Adjust the head azimuth screw to obtain maximum
output and both output of L / R is in 3dB.
3. Put on the screw lock paint after alignments.
1. Insert the recording tape in deck-B.
2. Starting the recording.
3. Adjust the oscillation frequency to 80KHz+/-3KHz
by core of Oscillation coil of L301.
Measurement method
1. Set the Signal Generator signal to 530KHz (529KHz)
the feed to Loop Antenna.
2. Receiving the signal and the adjust the OSC coil (L2)
obtain the V.T is 1.40V +/-0.05V.
3. Change the receiving frequency to 600KHz (603KHz).
4. Adjust the Antenna coil ( L2 ) obtain maximum
sensitivity .(Adjust the SSG output to out of AGC
range.)
1. Set the receiving frequency to 530KHz (529KHz ).
2. Feed the 450KHz signal to AM antenna input.
3. Adjust the IFT Block T1 obtain to maximum
output.(Adjust the SSG output to out of AGC
range.)
Measurement method
Standard
Adjusting
values
positions
Maximum output Adjust the
head azimuth
screw only
when the head
has been
changed.
80kHz+/-3kHz
Use the High-
Impedance
Probe or
Frequency
counter input.
Standard
Adjusting
values
positions
V.T :
Adjust the OSC
1.40V+/-0.05V
coil only when
the AM coil
block has been
changed.
Maximum
sensitivity
Maximum output Adjust the IFT
only when the
IFT block has
been changed.
1-19
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