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UD-300
ADJUSTMENT
CSSSETTE
DECK
INPUT
SETTINGS
CASSETTE DECK SECTION
TAPE:NORMAL,
1
REC/PLAY HEAD
OUTPUT
CASSETTE
TAPE
SETTINGS
| DECK
SETTINGS
DOLBY:OFF,
NO.
ITEM
INPUT:LINE,OR AUX
ALIGNMENT
ALIGN
FOR
DEMAGNETIZATION
POWER:OFF
CLEANING
Demagnetize the REC/PLAY
head with a head
demagnetizer.
Clean the REC/PLAY head
erase head,capstan and pinch
roller using a cotton
swab slightly damped
with aichol.
REC/PLAY
head
REC/PLAY
head
erase head,
capstan,
pinch roller.
$CC1727
MTT-114,
TCC-153
10kHz,
-10dB
ll PC board adjustment(X28-2450)
[3]
AZIMUTH
Connect R70 and
GND
(DECK A)
or:
R7 and
GND
(DECK
B)
PLAY
$CC1727
MTT-111,
TCC-110
3kHz
-4dB
TAPE SPEED
(HI SPEED)
$CC1727
MTT-111, TCC-110
3kHz
-4dB
Disconnect.
PLAY.
TAPE SPEED
(NORMAL)
MTT-256U TCC-160
315Hz (OdB)
MTT-256 SCC1727
315Hz (-4dB)
PLAYBACK
* *
LEVEL
Adjust AG output so
that the SPEAKER
output becomes
-28dBm at 1KHz,
then record and
reproduce signal
of 1kHz and 10kHz in
alternation.
AUX input:200mvV,
(A)
1kHz,-28dBm
10kHz,-28dBm
(-28dBm=30mV)
BIAS CURRENT * *
%* «Set VOLUME
knob to the condition
NB:MIN.
GE EFFECT:OFF,
[a
ee!
NOR
HI
@ @*
to
{HI
NOR
eee
DECK
B
GND
SP)
BIAS
R
L
VRG
VRS
RPB
LPB
RPB
VR4
VRS
Fr
Pre meee
t+
<
Ws
°
Azimuth
adjustment
Maximum output.
Screw
Adjust the tape speed
so that a 3kHz signal is
produced at the center
of the tape.
DECK A: VR7
DECK B: VR 1
Adjust the tape speed
so that a 3kKH1z signal is
produced at the center
of 'the tape.
DECK A: VR8
DECK B : VR2
vRO
()
VR10 (R)
VR3
(Ll)
VR4 (R)
Output level : -5.0dBm
Output leve : -9.0dBm
Record 1kHz and 10kHz in
alternation and adjust
the variable resistors which
control the bias current
so that the same
playback
level is obtai ned.
VR 5 (L)
VR 6 (R)
speaker output 200mV/8Q.
eee
HI
=
DECK
A
<
2»
N
GND
SP)
to
(H1
LPB
<
ys]
wo
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