Electrical Adjustments; Tape Speed Adjustment; Adjustment Location - Sony TC-K555ES Service Manual

3-2. ELECTRICAL ADJUSTMENTS
TC-K555ES
Tape Speed adjustment
Mode: playback
Note: The adjustment should be performed in the
order given in this service manual.
The adjustments should be performed for
both L-CH and R-CH.
• Set the TAPE switches according to the tape as
follows.
Tape TAPE switch
CS-15 TYPE I
CS-25 TYPE II
CS-30 TYPEll
CS-40 TYPEN
Procedure:
test tape
WS-48A
(3kHz,
o
dB)
speed checker
LFM-30
or
digital frequency
counter
~
n
LINE OUT
Adjustment Location:
Frequency difference between the beginning
and the end of the tape should be within 0.34%
(10 Hz).
• Switches and controls should be set as follows un-
less otherwise specified.
DOLBY NR switch: OFF
TAPE switch: TYPE I
TIMER switch: OFF
LINE OUT/HEADPHONES: MAX
• Standard Record:
Deliver the standard input signal level to the
input jack and set the REC LEVEL control to
obtain the standard output signal level.
Specification:
Speed checker
-0.17 to +0.17%
Digital frequency counter
2,995 - 3,005 Hz
Standard Input Level
LINE IN
source impedance 10kn
input level
0.25 V (-10 dB)
Standard Output Level
HEADPHONES
LINE OUT
load impedance 8n 47kn
output level 77 mV (-20 dB) 0.44 V (-5 dB)
RV901
( [ ) fast
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