JVC CA-MXK350V, Service Manual

Page: 19 / 80

1-19
n
Arrangement of adjusting positions
n
Tape recorder section
n
Tuner section
Note: The adjustment of CD section is not required.
Items
Measurement
conditions
Measurement method
Standard
values
Adjusting
positions
Cassette Head
Azimuth Alignments Test tape :
VT703 (10kHz)
Measurement
output terminal :
Left and Right
speaker output
(6-ohm loaded)
or Headphone
Output
(32-ohm loaded)
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.
Maximum output Adjust the
head azimuth
screw only
when the head
has been
changed.
Recording Bias
Frequency Alignment Test tape :
TYPE
I
AC-225
Measurement
output terminal :
Erase head
terminal
(CN308 8-Pin)
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.
80kHz+/-3kHz Use the High-
Impedance
Probe or
Frequency
counter input.
Items
Measurement
conditions
Measurement method
Standard
values
Adjusting
positions
AM Tracking
Alignments Input signal:
530kHz (529kHz)
600kHz (603kHz)
Adjustment
point: Antenna
coil (L2) 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.)
V.T :
1.40V+/-0.05V
Maximum
sensitivity
Adjust the OSC
coil only when
the AM coil
block has been
changed.
AM IFT
Alignments Input signal:
530kHz (529kHz)
Adjustment
point: IFT (T1) 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.)
Maximum output Adjust the IFT
only when the
IFT block has
been changed.