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test tape
variable
resister
P-4-A100
(10kHz, — 10dB)
oscilloscope
LCH
ATK Q
LINE OUT
Screen
pattern
in phase
45°
90°
135°
180°
——_-—————"
good
wrong
4,
Set
in the
REV
mode
and
repeat
the
step
1-8,
5,
After
the
adjustment,
lock
the
screws
with
locking
Playback
Level
Adjustment
compound,
Procedure :
Adjustment
Location : Record/Playback
head
Mode : playback
test tape
P-4-L300
(315kHz, 0dB)
VTVM
FWD
REV
Sd
Adjust
RV101
(L-ch) and RV201
(R~ch) so that the reading on
Tape
Speed
Adjustment
VTVM
meets the adjustment limits below.
Setting :
test pin TP801 : short
Adjustment
Limits :
LINE
OUT
level:
—7.7dBs(m)
+ 0.5dB(0.3~0.34V)
Procedure :
Level
difference
between
channels:
less
than
0.5dB
Check
that the LINE
OUT
level does not change
even
if Playback
and
Stop
operation
is repeated
several
times.
Mode : playback
test tape
Adjustment
Location:
Main
board
WS-48B
(3kHz, OdB)
jo
frequency
counter
1.
Set
to FWD
playback
mode.
2.
Adjust motor
rear side (variable resistor) so that the frequency
counter
reading
becomes
3,000 + 15Hz.
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