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Record Level Adjustment
Setting:
REC LEVEL control: Standard Record (See page 12).
test pin CNE707 : short
Procedure:
1.
Mode: record
AF OSC
LINE IN
315Hz, 31. 6mV(-27. 8dB)
2.
Mode: playback
recorded
VTVM
LINE OUT
3.
Playback the signal recorded in step 1.
Confirm that the signal level is within the adjustment limits below. If
necessary, adjust RV141 (L-ch) and RV241 (R-ch) repeat the step |
meat
Adjustment Limits:
—27.80. 5dB(29 to 33. 4mV)
Adjustment Location:
MAIN
(A) board
Erase Current
Adjustment
: TC-K670/K877ES
1.
Mode:
record
ot—ilts
2.
Adjust RV504 so that the reading on VTVM
is
106mV (erase current=105mA).
3.
And
then
confirm
that the
reading
on
the
frequency
counter is 160kHz.
Adjustment
Limits :
Erase
current:
105mA
to 110mA
Frequency : 160 + 6kHz
| TC-K570/ K670/K677ES
Adjustment Location
—MAIN (A) BOARD—
RV141(L-CH)
} Record Level
RV241(R-CH)
RV121(L-CH)
|
RV221(R-CH) ?
CNE522 Erase Current Test Point
T181(L-CH)
T281(R-CH)
RV504 Erase Current
Playback Level
} Bias Consumption Current
CNE521
Bias Consumption Current Test Point
"RV281 (R-CH)
} Record Bias
RV181(L-CH)
CNE707 Test Mode Point
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