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TC-818
Record
Bias Adjustment
Setting :
Procedure :
1,
Zs
Mode : record
AF OSC
Mode : playback
recorded
|e
1) 315Hz
2) 10KHz
\ 43.6mV (—25dB)
REC
LEVEL
control: standard
record
(See
page
4.)
Connect
TP1l
to ground,
RV62
REC Bias
(RCH)
RV42
REC Bias
(L-CH)
Confirm that the 10kHz playback output is O+0.5dB relative
to the 315Hz output. If necessary, adjust RV42 (L-CH), RV62
(R-CH)
and
repeat
the
steps
given
above.
After
the
ajustment
remove
jumper
wire
of TPI.
Adjustment
Location:
MD
B board (US, Canadian
model)
HX PRO
board (AEP, UK
model)
Record
Level
Adjustment
Setting :
REC
LEVEL
control: standard
record
(See page
4.)
Connect
TP1
to ground,
Procedure
:
i
4,
Mode : record
AF OSC
(9
attenuator
|
aR
|
oo
fo)
Mode : playback
recorded
portion
| >
Play
back
the
signal
recorded
in step
1,
. 10kQ
LINE IN
315Hz, 0.25V (—10dB)
Confirm
that the signal level is within
the specification
below, If necessary, adjust RV101 (L-CH), RV201 (R-CH)
and
repeat
the
step1-3.
After
the
adjustment,.remove
jumper
wire
of TP1l.
LINE
OUT
level : —8dB+0.5dB
Adjustment
Location : audio
board
RV201
RV101
(RCH)
(LH)
—Adjusting
Parts
Location
Diagram—
=
O
(R-CH)
PB
Level
(L-CH)
PB
Level
;
REC Level
ee,
Peed
CNP301
AUDIO
BOARD
—Component
Side—
Motor
Deck A:
Ha
Deck
B:
MIIB
Normal
Speed
semi-fixed
variable
resister (L)
High
Speed
semifixed
variable
resister (H)
Deck A:
MD-A
board
Deck B:
MD-B board
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