Harman Kardon DC5300 - Tape Search and Preview Functions; Music Search and Blank Skip Utility; Intro Scan Tape Preview

ELECTRICAL ADJUSTMENT AND CONFIRMATION
1. Before adjustment
« Before electrical adjustment, make sure that con-
firmations of the cassette mechanism are all com-
pleted.
* After the power switch is pushed on, wait for 10
minutes before measuring to be sure of the most
stable operation.
« Since head magnetization, dust accumulations, etc.
are likely to introduce errors in the various charac-
teristics, it is very important that the heads are
properly demagnetized and cleaned before com-
mencing any adjustment, particularly frequency
response and head azimuth adjustment.
2. Instruments required
* Low frequency oscillator
« AC VTVM or dual channel AC VTVM
* Oscilloscope
¢ Wow/flutter meter
« Frequency counter
¢ Distortion meter
3. Test tapes
¢ Azimuth adjustment ............05 MTT-114 or TCC-153
* Tape speed adjustment .... MTT-111DN or TCC-112
¢ Playback output level adjustMent ...........scccseesereees
MTT-150 or TCC-130
* Playback frequency characteristic confirmation
sSScesess sebtyaesaaee TCC-1216 or TCC-162C and TCC-262C
¢ Reference tapes
Note:
C-90 differes with C-60 in the thickness and bias is of
unequal, so adjust with the tape whose bias in of
Specified Value.
PLAYBACK FREQUENCY CHARACTERISTIC
TEST TAPE : TCC-162C, TCC-262C
20Hz 100Hz 315Hz
RECORD/PLAYBACK FREQUENCY CHARACTERISTIC
TEST TAPE : SCC-502, SCC-1360, SCC-565
DOLBY NO: OFF
0
-3dB
20Hz 100Hz 315Hz
4. General conditions (unless otherwise noted)
Controls and Switches
Dolby NR Off
Input Level Maximum
MPx Filter Off
Bias Fine Trim Center
Input Balance Center
Azimuth Adjustment
When the maximum level point of R channel does not
equal that Lchannel, connectthe oscilloscope as shown
in Fig. 3 and proceed with azimuth adjustment so that
L and R channels are in phase.
a) Connect L channel tape out to “X (or V)"” and R
channel to “Y (or H)”. Observe the lissajouss wave-
form.
Set L and R channels to monaural. Adjust vertical
and horizontal gain so that the waveform becomes
45 degree.
c) Adjust azimuth so that the measurement of “a”
becomes maximum and the measurement of “b”
becomes minimum against the 45 degree line.
b
=
Oscilloscope
COPY/PLAYBACK FREQUENCY CHARACTERISTIC
TEST TAPE: TCC-262C TO SCC-502
TCC-162C SCC-1360
SCC-565
0
-3dB
100Hz 315Hz 4kHz 15kHz
(TYPE IV)
Fig. c
Hi-SPEED COPY/PLAYBACK FREQUENCY CHARACTERISTIC
TEST TAPE: TCC-262C TO SCC-502
TCC-162C SCC-1360
SCC-565
100Hz 315Hz