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RXD-NV301/NV301E/NV701/NV701E
10
ADJUSTMENT
RVS
FWD
NO.
ITEM
INPUT SETTING
OUTPUT
SETTING
CASSETTE TAPE
DECK SETTING
ALIGNMENT
POINTS
ALIGN FOR
FIG.
0dBs = 0.775V
I Cassette mechanism unit (Adjustment of the REC / PLAY head)
Unless otherwise specified, set the respective swiches as follows
TAPE: NORMAL DOLBY: OFF
(1)
Demagnetization
and cleaning
Power : OFF
Demagnetization,
cleaning, PLAY
Recording
head, erase
head, capstan
pinch roller
Demagnetize the REC / PLAY head
with the head eraser. Clean the REC /
PLAY head, erase head, capstan and
pinch roller using a cotton swab slightly
damped with alcohol.
(2)
Azimuth of the
REC / PLAY
head
SCC-1727
TCC-153
MTT-114
10kHz, -10dB
TP401(L)
TP402(R)
TP401(L)
TP402(R)
TP401(L)
TP402(R)
TP401(L)
TP402(R)
Connect a
DC voltmeter
as follows.
TP405(Lch),
TP404(Rch)
PLAY
Adjust the output to maximum and
adjust the azimuth adjustment screw
for the Lissajours waveform pattern of
the oscilloscope to become close to a
45ß straight line.
II PC BOARD ADJUSTMENT
(1)
TAPE SPEED
(NORMAL)
TCC-110
MTT-111
SCC-1727
3kHZ
PLAY
VR407
Adjust the tape speed so that 3kHz is
obtained at the center of the tape.
III PC board adjustment.
(1)
(2)
PLAYBACK
LEVEL
SIGNAL
CURRENT
TCC-130
400Hz
PLAY
VR401(L)
VR402(R)
VR403(L)
VR404(R)
Adjust the playback output to —6dBs.
-20dBs
(3)
BIAS CURRENT
(A)
12.5kHz, -20dB
Insert CrO2
blank TAPE
(A)
Adjust the AG
for the output of the
deck to be come
-20dBs at 400Hz.
REC PAUSE
REC PLAY
VR405(L)
VR406(R)
7mV(NV701)
5.5mV(NV301)
DECK BOARD
VR407
VR404
SIGNAL
CURRENT
VR402
(PB/R)
TP404(Rch)
VR406
R BIAS
L BIAS
VR405
VR403
VR401
(PB L)
TP402(Rch)
GND
TP401(Lch)
TP405(Lch)
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