KENWOOD CT401
Instrukcja Serwisowa

CT-401/403/KXF-W1030/W3030
ADJUSTMENT
No. ITEM INPUT SETTINGS OUTPUT SETTINGS CASSETTE DECK SETTINGS ALIGNMENT POINT ALIGN FOR 0 dBs = 0.775 V Demagnetize the REC/PLAY head with a head demagnetizer. Clean the REC/PLAY head, erase head, capstan and pinch roller using a cotton swab slightly damped with alcohol. Maximum output. (a) (b) FLG. CASSETTE DECK SECTION I. REC/PLAY HEAD [1] DEMAGNETIZATION � � POWER OFF Remove the cassette door. REC/PLAY head REC/PLAY head, erase head, capstan pinch roller Azimuth adjustment screw TAPE: NORMAL, DOLBY: OFF, INPUT: LINE IN

[2]

CLEANING

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�

PLAY

[3]

AZIMUTH

(A) MTT·114, TCC-153 0 kHz, -10 dB

(B)

PLAY

II. DC BOARD [1] TAPE SPEED (A) MTT-111, TCC-110 3 kHz (B) PLAY SFR301 Adjust the tape speed so that a 3 kHz signal is produced at the center of the tape.

III. PC BOARD <1> <2> PLAYBACK LEVEL RECORD LEVEL MTT-150 400 Hz (200 nWb) (A) 1 kHz, -20 dBs (A) 1 kHz, -20 dBs 10 kHz, -20 dBs (B) PLAY Record 1kHz and 10kHz in alternation and playback. DECK B SFR101 (L) SFR102 (R) SFR107 (L) SFR108 (R) 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. 105 kHz ± 3 kHz (c)

(B)

<3>

BIAS CURRENT

(B)

Record and playback at maximum REC volume position.

SFR105 (L) SFR106 (R)

<4>

REC BIAS OSC FREQUENCY

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Recording

L107

SYSTEM CONNECTIONS

(a) AZIMUTH ADJUSTMENT

SYSTEM CONTROL
REC PLAY

L

R
LINE IN LINE OUT

AC voltmeter

AG

Oscilloscope

AC voltmeter Frequency counter

(A)

(B)

KXF-W1030

(b) AZIMUTH ADJUSTMENT

(c)

To Frequency counter

CN105

4

KXF-W3030