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SECTION 4
ELECTRICAL ADJUSTMENTS
TEST MODE
This set have the test mode function. In the test mode, FM
Auto Scan/Stop Level and AM Auto Scan/Stop Level adjust-
ments can be performed easier than it in ordinaly procedure.
<Set the Test Mode>
1.
Set the "OFF" mode.
2.
Push the preset
[4] button.
3.
Push the preset
|5) button.
4
D
Press the preset [1] button for two seconds.
Then the display indicates five patterns and stops, the
test mode is set.
<Rerease the Test mode> °
1.
Push the "OFF" button.
See the adjustment location from on page 24 for the adjust-
ment.
DECK SECTION
OdB=0.775V
PB Head Azimuth Adjustment
Procedure:
1.
Put the set into the FWD PB mode.
test tape
P-4-A063
(6.3kHz, —10dB)
pe
LINE OUT
2.
Turn the screw and check the output peak value. Adjust
the screw so that the peak value in channels L and R
coincides within 2dB.
within
2dB
peak
screw
"=
angle
position
L-CH
R-CH
peak
peak
3.
Check the phase in the PB mode.
test tape
P-4-A063
(6.3kHz, —10dB)
oscilloscope
LINE OUT
Screen pattern
YOO@PY
in phase
45°
90°
135°
180°
rc
ee
Ne
re!
good
wrong
4.
Repeat the above adjustment for the REV PB mode.
Adjustment Location : PB head
azimuth adjustment
i
screw (REV)
azimuth adjustment
screw (FWD)
—20—
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