Adjustment - Kenwood CT-401 Service Manual

CT-401/403/KXF-W1030/W3030
QQ
3 7 63 1515 0
No. ITEM
CASSETTE DECK SECTION
I. REC/PLAY HEAD
DEMAGNET-
[ 1 ]
IZATION
[ 2 ] CLEANING
[ 3 ] AZIMUTH
II. DC BOARD
[ 1 ]
TAPE SPEED
III. PC BOARD
PLAYBACK
< 1 >
LEVEL
RECORD
< 2 >
LEVEL
BIAS
< 3 >
CURRENT
TE
L 13942296513
REC BIAS
< 4 >
OSC
FREQUENCY
SYSTEM CONNECTIONS
REC
L
R
LINE IN LINE OUT
AC voltmeter AG
(A)
(b) AZIMUTH ADJUSTMENT
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ADJUSTMENT

INPUT OUTPUT
SETTINGS SETTINGS
TAPE: NORMAL, DOLBY: OFF, INPUT: LINE IN
– –
– –
(A)
MTT·114, TCC-153 (B)
0 kHz, -10 dB
(A)
(B)
MTT-111, TCC-110
3 kHz
MTT-150
(B)
400 Hz (200 nWb)
(A)
(B)
1 kHz, -20 dBs
(A)
1 kHz, -20 dBs (B)
10 kHz, -20 dBs
– –
SYSTEM CONTROL
PLAY
AC voltmeter
Oscilloscope
(B)
x ao
y
. i
CT-403/KXF-W3030
8
CASSETTE DECK ALIGNMENT
SETTINGS
POWER OFF REC/PLAY
Remove the cassette door.
REC/PLAY
head, erase
PLAY
head, capstan
pinch roller
PLAY adjustment
PLAY SFR301
SFR101 (L)
PLAY
SFR102 (R)
Record 1kHz and 10kHz in
SFR107 (L)
alternation and playback.
SFR108 (R)
Record and playback at
SFR105 (L)
maximum REC volume
SFR106 (R)
position.
Q Q
3 6 7 1 3
Recording
Frequency counter
u163
(c)
.
CN105
2 9 9 4 2 8
ALIGN FOR
POINT
0 dBs = 0.775 V
Demagnetize the REC/PLAY
head with a head
head
demagnetizer.
Clean the REC/PLAY head,
erase head, capstan and
pinch roller using a cotton
swab slightly damped with
alcohol.
Azimuth
Maximum output.
screw
Adjust the tape speed so
that a 3 kHz signal is
produced at the center of
the tape.
DECK B
Output level : ±1 dBs
0 dBs ± 3 dBs
Record 1 kHz and 10 kHz in
alternation and adjust the
variable resistors which
control the bias current so
that the playback level
is obtained 0 dBs ± 3 dBs.
1 5 0 5 8 2 9 9 4
105 kHz ± 3 kHz
L107
(a) AZIMUTH ADJUSTMENT
CT-401/KXF-W1030
m
co
To Frequency counter
9 9
FLG.
(a)
(b)
2 8 9 9
(c)