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v-7000/V-5000
5 ELECTRICAL CHECKS AND ADJUSTMENTS
PF -~ TRO & BA
5-1
PRECAUTIONS
1,
Before
performing
adjustments
and
checks
clean
and
demagnetize
the entire tape path.
. Make sure the deck is properly set for the voltage in
your
locality.
. In general, adjustments
and checks
are made
in the
order of L ch. then R ch. Double
REF. Nos. indicate
Lch/R
ch..
(Example
; R51/R61)
. O dB is referenced to 0.775V. If an AC voltmeter that
references OdB to 1V is used, appropriate compensation
should be made.
. The
AC
voltmeter
used
in the procedures
must
have
an input
impedance
of 1M
ohms
or more.
. Note the
"Deck
setting"
at the top of each chart. The
settings apply to all check for a specific chart unless
explicitly stated otherwise.
. Since this deck has an automatic
tape selector, be sure
to use test tapes that have tape position detecting holes.
. Input terminals
and measuring
points
at each step are
the same
as previous step, otherwise
specified.
Oscillator
Distortion
Analyzer
Attenuator
CMO
we"?
, @@@°
5-1
itm
1. 7 VY PSRORS + BORK,
F-TENRORMCBRET
2TCKRELY,
2. IEE OR UD . BRILL ch, R ch OME CHO TK HK
SW,
3.0 dB = 0.775V
4, WEIS
SUAVETOAAT
VY E-YVAls
IMQELED
HOLBALTKC RE,
5. BRAT -P7HL7 YF BRM
oo TOETOC,
FZ
KF -TUBST-TPRS
y 3 VRWILOD SZ OOLBALT
CKRSW,
6. AF HFS EVUMEEMAS
AT vy TBO CHICARANT
WSZBRLRE,
BHOAZT y SERMUCT,
Oscilloscope
AC Voltmeter
1kHz
Filter
LINE
IN
OUTPUT
Fig. 5-1 Basic test setup SAMEERA
~Siceeid
Saag"
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