Samsung RCD-750 - CD Section Adjustment; Focus and Balance Adjustments

7-2. Tape section
1) Recording BIAS adjustment
® Connect frequency counter to JC502 (See Fig.7)and press the Record button.
@ Adjust JT501 (BIAS OSC COIL) until frequency counter reads 50KHz on stereo FM mode .{ "0 “ position)
2) Tape AZIMUTH adjustment
©
Connect
the
equipments
as
per
Fig.8
to
adjust
the
tape
azimuth
with
test
tape
(recorded
at
6.3KHzMTT-113N)
@ Play
the
test
after
inserting
in
DECK1.
@
Adjust
the
azimuth
ajustment
screw
of
left
side
of
record/play
head
for
maximum
output
and
for
the
same
channel phase.
(see
Fig.9)
3) Tape speed adjustment
®
Connect
the
equipments
as
shown
in
Fig.8
adjust
the
tape
speed
with
test
tape
(recorded
at
3KHz
:
MTT-111N)
MAIN PCB
VTVM
Jcs502
|
| oO
{r
FREQUENCY | =
e-| COUNTER
t___ : | i /| OSciLLoscore
1
UNIT
UNDER TEST
L| FREQUENCY
rt 3000Hz || COUNTER
Fig.7 Recording bias adjustment
para
Fig.8
Azimuth
speed
adjustment
ane)
RIP
head
|
fo
goi||se.
Gh,
1;
Adjustment screw | : i
RCD-750
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36
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