Harman Kardon DC5300 - Maintenance and Tape Care; Tape Head Cleaning and Demagnetization; Cassette Tape Storage and Protection

Alignment
Instrument
Required
Input
Signal
Mode
Primary
Deck
VTVM
PB
Quick
sensor
Black
tape
with
leader
tape
(Primary)
Secondary
Deck
VTVM
PB
Quick
sensor
Black
tape
with
leader
tape
(Secondary)
TP859
-
VR853
VTIVM
TP501
(L
ch),
GND
Azimuth
Oscilloscope
TP502
(R
ch),
GND
Azimuth
screw
Test
tape
(MTT-114
or
TCC-153)
ie
OUTPUT
jack
Test Point Adjustment For
Adjust VR803 so the voltage at the test point is 0.62V when the
leader tape is running and 200 mV or less in the middle of tape.
Adjust VR853 so the voltage at the test point is 0.62V when the
leader tape is running and 200 mV or less in the middle of tape.
TP809 VR803
Maximum output
Refer to “Azimuth Adjustment” on page 6.
Primary
Deck
Frequency
counter
TP501
(L
ch),
GND
Tape
speed
(Hi-speed)
Test
tape
(MTT-111DN
or
TCC-112)
TP502
(R
ch),
GND
Primary
Deck
Frequency
counter
TP501
(L
ch),
GND
|
VR801 6020 Hz +20 Hz (TP806 : GND connection)
Adjust at the center of test tape.
3010 Hz +10 Hz
Adjust at the center of test tape.
6020 Hz +20 Hz (TP856 : GND connection)
Adjust at the center of test tape.
Tape
speed
(Normal
speed)
|
Test
tape
(MTT-111DN
or
TCC-112)
TP502(Rch),GND
|
“R802
Secondary Deck Frequency counter
Tape speed (Hi-speed) Test tape (MTT-111DN or TCC-112)
Frequency counter
12)
TP501 (L ch), GND
TP502(Rch),GND | VR851
3010 Hz +10 Hz
TP501 (L ch), GND VR852
TP502
(R
ch),
GND
Adjust
at
the
center
of
test
tape.
775 mV
TP501 (L ch), GND VR101 (L ch) : we
TP502(Rch),GND
|
VR102
(R
ch)
ase
Boy
aaa
PoSnon
775 mV
Tape selector is Normal position.
Adjust at Dolby NR off.
Adjust VR103 and VR104 so the playback frequency response
(1 kHz/18 kHz) is +0.6 ~ 0.7 dB.
Refer to Fig. a
Adjust VR153 and VR154 so the playback frequency response
(1 kHz/18 kHz) is +0.6 ~ 0.7 dB.
Refer to Fig. a
Secondary Deck
Tape speed (Normal speed) | Test tape (MTT-111DN or TCC-1
Primary
Deck
VTVM
PB
Playback
output
level
Test
tape
(MTT-150
or
TCC-130)
(Primary)
VR157 (L ch)
Secondary
Deck
VTVM
FE
|
eee
GND
VR158
(R
ch)
15
c
Playback
output
level
Test
tape
(MTT-150
or
TCC-130)
(Secondary)
TP502
(R
ch),
GND
Primary
Deck
VTVM
PB
TP501
(L
ch),
GND
VR103
Playback
frequency
Test,tape
(TCC-1216
or
TCC-162C
(Primary)
TP502
(R
ch),
GND
VR104
characteristic
confirmation
|
and
TCC-262C)
or
OUTPUT
jack
Secondary
Deck
VTIVM
PB
TP501
(L
ch),
GND
Playback
frequency
Test
tape
(TCC-1216
or
TCC-162C
TP502
(R
ch),
GND
nee
characteristic
confirmation
|
and
TCC-262C)
or
OUTPUT
jack
(Secondary
Bias frequency
confirmation
Frequency counter
REC/PB
(Primary)
TP101 (L ch), GND
| T301
105 kHz +3 kHz
Use METAL tape.
Bias trap
VTVM
Bias level (pre-adjustment)
Record level
(pre-adjustment)
.
VTVM
Blank tapes
METAL SCC-565
CrO2 SCC-1360
Normal SCC-502
Apply 1 kHz signal to INPUT jack. Set INPUT LEVEL knob
so that TP501 and TP502 to GND voltage is 560 mV in
REC-PAUSE mode.
REC/PB
(Primary)
REC/PB
(Primary)
REC/PB
(Primary)
pane (R ch), GND
TP201 (L ch), GND
TP202 (R ch), GND
TP101 (L ch), GND
TP102 (R ch), GND
TP501 (L ch), GND
TP502 (R ch), GND
LC201, LC202
VR201, VR202
VR351, VR352
Minimum output
Use METAL tape.
INPUT VR. minimum
35 mV :
Test tape is METAL blank tape.
20 mV
Test tape is CrO2 blank tape.
13 mV
Test tape is Normal blank tape.
560 mV
Tape selector is METAL position.
Adjust VR351 and VR352 so that the distortion becomes 1.0% — 1.4%
VR353 560 mV eee
(CrO2)
Adjust
VR353
so
that
the
distortion
becomes
1.3%
(CrO2).
VR354
(Normal)
Adjust
VR354
so
that
the
distortion
becomes
1.0%
(Normal).
This confiemation should be at each tape selector position.
Record/playback
frequency characteristic
VTIVM
Blank tapes
CrO2 SCC-1360
METAL SCC-565
Normal SCC-502
Apply 1 kHz signal to INPUT jack. The output at TP501
and TP502 are Dolby level -25 dB.
Then adjust with a 20 Hz to 30 kHz sweep signal.
REC/PB
OUTPUT jack
VR353
L201, L202
(VR351, VR352)
So that the record/playback frequency resportion is flat (at least
within the range in Fig. b.)
Tape selector is CrO2 position.
VR351
VR352
So
that
the
record/playback
frequency
resportion
is
flat
(at
least
within
the
range
in
Fig.
b.)
Tape
selector
is
METAL
position.
VR354
L201, L202
(VR351, VR352)
So
that
the
record/playback
frequency
resportion
is
flat
(at
least
Record level
VTVM
Blank tapes
CrO2 SCC-1360
METAL SCC-565
Normal SCC-502
High speed copy
frequency characteristic
VTVM
Blank tapes
CrO2 SCC-1360
METAL SCC-565
Normal SCC-502
Test tape
TCC-185C
Set INPUT LEVEL knob so that TP501 and TP502 to GND
voltage is 560 mV (1 kHz) in REC-PAUSE mode.
REC/PB
7
TP501 (L ch), GND
TP502 (R ch), GND
within the range in Fig. b.)
Tape selector is Normal position.
560 mV
Perform adjustment using CrO2.
Perform checking only for Normal and METAL tapes.
High Speed
Copy Play
OUTPUT
L203, L204
Load
TCC-185C
in
SEC
DECK
and
SCC-565
in
PRI
DECK
and
execute
high-speed
copying,
then
play
the
tape
in
the
PRI
DECK.
Check
that
the
frequency
response
of
the
14
kHz
signal
is
within
+3
dB
of
that
of
the
1 kHz
signal.
If
this
specification
cannot
be
satisfied,
adjust
L203
and
L204.
After
adjustment
is
confirmed,
also
use
the
SCC-502
and
SCC-1360
tapes
to
check.
High speed copy
frequency characteristic
VTVM
Blank tapes
CrO2 SCC-1360
METAL SCC-565
Normal SCC-502
Test tape
TCC-285C
High Speed
Copy Play
OUTPUT
L203, L204
peed
TCC
eeae
in
SEC
DECK
and
SCC-565
in
PRI
DECK
and
execute
high
speed
copying,
then
play
the
tape
in
the
PRI
DECK.
Check
that
the
frequency
response
of
the
14
kHz
signal
is
within
+3
dB
of
that
of
the
1
kHz
signal.
If
this
specification
cannot
be
satisfied,
adjust
L203
and
L204.
After
adjustment
is
confirmed,
also
use
the
SCC-502
and.SCC-1360
tapes
to
check.
Meter level
VTIVM
Apply 1 kHz signal to INPUT jack. Set INPUT LEVEL knob
so that TP501 and TP502 to GND voltage is1.5 dB below
775 mV.
REC/PAUSE
PEAK LEVEL METER
Adjust so the -1 dB segments light.
MPX filter characteristic
confirmation
VTVM
Apply 19 kHz, 15 kHz and 1 kHz signal to INPUT jack.
Set INPUT LEVEL knob so that TP501 and TP502 to GND
voltage is 775mV.
REC/PAUSE
MPxX filter
ON
TP501 (L ch), GND
TP502 (R ch), GND
or OUTPUT jack
Adjust for -0.3 dB at 15 kHz and > 35 dB at 19 kHz
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