6
X-VH7
ADJUSTMENT
CASSETTE DECK
NO.
ITEM
INPUT
SETTINGS
OUTPUT
SETTINGS
CASSETTE DECK
SETTINGS
ALIGNMENT
ALIGN FOR
FIG.
Unless otherwise specified, set the respective switches as follows:
TAPE: NORMAL DOLBY: OFF INPUT: REC IN OUTPUT: PLAY OUT
0dBm=0.775V
ø. Cassette mechanism (REC/PB head adjustment)
Demagnetization
and cleaning
-
-
(POWER OFF)
demagnetization
(PLAY)
cleaning
REC/PB head
erase head
capstan
pinch roller
Demagnetize the REC/PB head by
head eraser. Clean the REC/PB head
,eraser head, capstan and pinch
roller with a cotton swab immersed
in alcohol.
REC/PB head
azimuth
TCC-153
MTT-114
10kHz,-10dB
(B)
PLAY
Adjust the output to maximum and
adjust the azimuth adjustment
screw for the Lissajous waveform
pattern of the oscilloscope to
become close to a 45˚ straight line.
¿
. Capstan motor adjustment
Tape speed
(NORMAL)
TCC-110
MTT-111
3kHz
(B)
PLAY
VR.
inside motor
Adjust so that the frequency 3kHz
at the center of the tape.
¡
. PC board adjustment
Playback level
TCC-130
(B)
PLAY
VR1,2
-1dBm
Recording level
TCC-108
400Hz
-21dBm
(A)
(B)
VR5,6
-21dBm
Bias current
TCC-108
12.5kHz
-21dBm
(A)
VR3,4
-21dBm
Measurement equipment connection
RVS
FWD
SYSTEM
CONNECTOR
L
R
REC IN
REC OUT
{
(A)
(B)
AC voltmeter
AC voltmeter
Oscilloscope
Distortion meter
AG
X-VH7(K)
COVER1,1P(
99.11.1
11:14
AM
y [ W 8
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