JVC CA-MXK10, Service Manual

Page: 19 / 108

1-19
Arrangement of adjusting positions
Items
Measurement
conditions
Measurement method
Standard
values
Adjusting
positions
Tape recorder section
Tuner section
Cassette deck mechanism
(Front side)
Head azimuth screw
(Forward side)
PB Head
(Deck-A) REC/PB Head
(Deck-B)
Main P.C.B.
TUNER P.C.B.
Head azimuth screw
(Reverse side)
Head azimuth screw
(Reverse side)
Head azimuth screw
(Forward side)
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.
Test tape
: VT703 (10kHz)
Measurement output
terminal
: Left and Right
speaker output
(6-ohm loaded)
or
Headphone Output
(32-ohm loaded)
Test tape
: TYPE AC-514
Measurement output
terminal
: Erase head terminal
(CN308 8-Pin)
Maximum output
80kHz+/-3kHz
Adjust the head
azimuth screw
only when the
head has been
changed.
Use the High-
Impedance Probe
for Frequency
counter input.
Cassette Head
Azimuth Alignments
Recording Bias
Frequency Alignment
Items
Measurement
conditions
Measurement method
Standard
values
Adjusting
positions
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.)
Input signal
: 530kHz (529kHz)
600kHz (603kHz)
Adjustment point
: Antenna coil (L2)
Input signal
: 530kHz (529kHz)
Adjustment point
: IFT (T1)
V. T
: 1.40V+/-0.05V
Maximum
sensitivity
Maximum output
Adjust the OSC
coil only when the
AM coil block has
been changed.
Adjust the IFT
only when the IFT
block has been
changed.
AM Tracking
Alignments
AM IFT Alignments
Note: The adjustment of CD section is not required.
L301 L301
8-Pin 8-Pin
CN308 CN308
L2 L2
T1 T1