Harman Kardon CD491 - Page 13

cS
=
AUTO-SEARCH OPERATION CONFIRMATION
Conditions
Test tape MTT-250B
Tape Selector CrO2z
Dolby NR off
- Wind the test tape to its end and reset the counter to
“0000”.
. Press the REW key to rewind the tape until the
counter indicates around “9500”.
. Check for the following operation by pressing the:
F.FWD key and the PLAY key simultaneously.
Stop Auto-search (2 ~ 5 sec.)
fee F.FWD key and ] ee indicator lights al
PLAY key simultaneously. | F.FWD indicator flashes.
~>Rewind (about 0.5 sec.) —~Playback
. Repeat the same check as in step 3 a few times by
pressing the F.FWD key and the PLAY key simulta-
neously.
5. With the test tape rewound fully, reset the counter to
“0000”.
6. Wind the tape on quickly until the counter indicates
around “0050” by pressing the F.FWD key.
7. Check for the following operation by pressing the
REW. key and the PLAY key simultaneously.
Stop Auto-search (2 ~ 5 sec.)
Press REW.key and PLAY ] [PLAY indicator lights and
key simultaneously. REW. indicator flashes.
—>Rewind (about 0.5 sec.) —~ Playback
8. Repeat the same check as in step 7 a few times by
pressing the REW. key and the PLAY key simultane-
ously.
LED DISPLAY LIGHTING LEVEL CONFIRMATION
Conditions (unless otherwise noted)
Output Level ..... ++ Center
Mic. Level ...... . . Off
Bias Fine Trim .. . . - Center
DolbyNR...... . Off
MPX Filter ..... z . Off
Tape Monitor... .. seeee . Monitor
Connect a 10k load resistors to LINE OUTPUT.
. Dolby NR light level confirmation
Play back the test tape (MTT-150) and confirm that
the LED display lights to OVU with the tape selector
at both the LN position and the CrO2 position. If the
display does not operate as described above, make
a readjustment by repeating steps 3 and 18 of
Electrical Adjustment.
REC. CAL. TONE and BIAS TONE light level con-
firmation
1) With the tape monitor switch set to source and the
tape selector at the CrO2 position, set the unit in
the REC-PAUSE state. Then confirm that the LED
display lights to OVU when the REC CAL button
is pressed.
If the display does not operate as described
above, make a readjustment by repeating step 19
of Electrical Adjustment.
© Test tape MTT-150
@ Reference tapes
tN XL-1
CrO2 AC-512
Metal AC-711
2)
Check
to
ensure
that
the
LED
display
lights
to
OVU
when
the
BIAS
TONE
button
is
pressed.
If the display does not operate as described
above, make a readjustment by repeating step 20
of Electrical Adjustment.
3)
With
the
tape
selector
at
the
LN
and
then
the
Metal
position,
check
to
ensure
that
the
LED
display
reading
does
not
change
when
the
buttons
are
pressed
as
in
steps
1)
and
2).