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TC-818
screw
until both of output
levels match
together
within
Procedure :
Mode
: FWD
playback
test
tape
WS-48B
(3kHz, 0dB)
47k Q
frequency counter
within
1dB
LINE OUT
Perform
high
speed
adjustment
before
normal
speed
adjustment,
(10kHz, —10dB)
oscilloscope
L-CH
47K Q
variable
:
frequency
speed
[acne
resistor of
= 'i
countor
°
motor
reading
M
ce Ba
2,980+15
LINE OUT
Frequency
difference
between
the
beginning
and
the
end
of the tape should be within 39%,
Frequency
difference
between
deck
A
and
deck
B the
beginning
of the tape should
be within
1.5%.
in phas
45°
90°
136°
180°
pe
anal
Oo
Adjustment
Location :
soot
hadi
deck A: motor (M11A) - rear side
4.
Set
in the
REV
mode
and
repect
the
step
1-3,
deck
B:
motor
(M11B)
rear
side
5,
After
the
adjustment,
lock
the
screws
with
locking
Procedure :
Mode : playback
Connect
TP1
to ground.
test
tape
P-4-L300
VTVM
(316kHz, 0dB)
E =I
LINE OUT
Adjust deck A:
RV41A(L-CH),
RV61A(R-CH)
and deck B:
RV41B(L-CH)
, RV61B(R-CH) so that the reading on VTVM
meets
the
specification
below.
Adjustment
Location : Record/Playback
head
(Adjustable
without
disassembly.)
FWD
REV
rrr
ete
Adjustment
screw
LINE
OUT
LEVEL : —10+0.8dB
Level
difference
between
channels: less than
0,5dB
Check
that the LINE
OUT
level does not change
in playback
mode
while changing the mode
from playback
to stop several
times,
Adjustment
Location : MD
board
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