KENWOOD CT401 Service Manual

Cover page of KENWOOD CT401 Service Manual

Service Manual for KENWOOD CT401, downloadable as a PDF file.

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background image
STEREO DOUBLE CASSETTE DECK
CT-401/403
KXF-W1030/W1030-S
KXF-W3030/W3030E/W3030-S
SERVICE MANUAL
© 2000-2/B51-5600-00 (K/K) 3473
70%
(dB)
­5
0+3
+6
(dB)
DPSS
TAPE
B
AUTO REVERSE
TAPE
A
AUTO REVERSE
POWER
- ON ­ OFF
1
@#
7
@#
7
¡
18PAUSE REC/ARM
¡
REC LEVEL
MIN
MAX
PUSH/OPEN
0
PUSH/OPEN
0
REV.MODE DOLBY NR
DUBBING
DUBBING
DOLBY NR
p
O
PEAK LEVEL METER
LINE IN
REC
PLAY
LINE OUT
SYSTEM CONTROL
L
R
Power button *
(K27-)
Cassette window (L)
(B03-3862-08)
Volume knob *
(K27-)
LED window
(B03-3865-08)
Cassette window (R)
(B03-3863-08)
Player button (L) *
(K27-)
Cassette door (L) *
(A53-)
Front panel *
(A60-)
Cassette door (R) *
(A53-)
Player button (R) *
(K27-)
AC power cord *
(E30-)
RCA jack
(E11-0917-08)
Phone jack
(E11-0918-08)
* Illustration is CT-403/KXF-W3030.
* Refer to parts list on page 13.
Metallic cabinet *
(A01-)
background image
STEREO DOUBLE CASSETTE DECK
CT-401/403
KXF-W1030/W1030-S
KXF-W3030/W3030E/W3030-S
SERVICE MANUAL
© 2000-2/B51-5600-00 (K/K) 3473
70%
(dB)
­5
0+3
+6
(dB)
DPSS
TAPE
B
AUTO REVERSE
TAPE
A
AUTO REVERSE
POWER
- ON ­ OFF
1
@#
7
@#
7
¡
18PAUSE REC/ARM
¡
REC LEVEL
MIN
MAX
PUSH/OPEN
0
PUSH/OPEN
0
REV.MODE DOLBY NR
DUBBING
DUBBING
DOLBY NR
p
O
PEAK LEVEL METER
LINE IN
REC
PLAY
LINE OUT
SYSTEM CONTROL
L
R
Power button *
(K27-)
Cassette window (L)
(B03-3862-08)
Volume knob *
(K27-)
LED window
(B03-3865-08)
Cassette window (R)
(B03-3863-08)
Player button (L) *
(K27-)
Cassette door (L) *
(A53-)
Front panel *
(A60-)
Cassette door (R) *
(A53-)
Player button (R) *
(K27-)
AC power cord *
(E30-)
RCA jack
(E11-0917-08)
Phone jack
(E11-0918-08)
* Illustration is CT-403/KXF-W3030.
* Refer to parts list on page 13.
Metallic cabinet *
(A01-)
background image
Audio
(E30-0505-05)
cord .................... (2)
AC
(E03-0115-05)
plug adaptor........... (1)
System
(E30-2816-05)
control cord ... (1)
(Except for Europe and Australia)
For the unit with an European AC
plug in areas other than Europe.
CT-401/403/KXF-W1030/W3030
2
CONTENTS / ACCESSORIES
CONTROLS
CONTENTS / ACCESSORIES .................................. 2
CONTROLS ................................................................2
CIRCUIT DESCRIPTION ............................................3
ADJUSTMENT ............................................................4
PC BOARD ................................................................ 5
SCHEMATIC DIAGRAM ............................................ 7
EXPLODED VIEW ....................................................12
PARTS LIST..............................................................13
SPECIFICATIONS ......................................Back cover
Contents
Accessories
DISPLAY
DOLBY NR reference level
(dB)
--5
0+3
+6
(dB)
DPSS
TAPE
B
TAPE
A
POWER
- ON ­ OFF
1
3
7
3
7
¡
18PAUSE REC/ARM
¡
REC LEVEL
MIN
MAX
PUSH/OPEN
0
PUSH/OPEN
0
DOLBY NR
DUBBING
DUBBING
DOLBY NR
(dB)
--5
0
+3
+6
(dB)
DUBBING
DOLBY NR
PEAK LEVEL METER
PEAK LEVEL METER
FULL LOGIC CONTROL
FULL LOGIC CONTROL
21
0
34
5
6 7
8
9
!@
DISPLAY
1 Deck A
Playback-only tape deck.
2 POWER switch:
Press to turn power
- ON and ­ OFF.
3 Deck A operation keys
3 key :
Play key.
1 key:
Rewind key. (for fast winding of tape
toward the left reel seen from you)
33 key:
Fast forward key (for fast winding of
tape toward the right reel seen from
you)
7 key:
Stop key.
4 Cassette holder (Deck A)
Press the area marked "PUSH/OPEN
0" to load or eject a tape.
5 Cassette holder (Deck B)
Press the area marked "PUSH/OPEN
0" to load or eject a tape.
6 Deck B operation keys
3 key :
Play key.
1 key:
Rewind key (for fast winding of tape
toward the left reel seen from you)
33 key:
Fast forward key (for fast winding of
tape toward the right reel seen from
you)
7 key:
Stop key
¶ REC/ARM key:
Press in stop mode to start recording
or press in record mode to let the
recording pause after leaving a non-
recorded blank of 4 seconds.
indicator : (Recording indicator)
8PAUSE key:
Press to let recording pause temporarily.
7 REC LEVEL control:
Adjusts the recording level.
8 DUBBING key:
Press to start tape dubbing.
9 DOLBY NR key:
Press to select the Dolby Noise Reduction
mode.
0 Deck B
Tape deck which is capable of both
playback and recording.
! DOLBY NR indicator
@ DUBBING indicator
1 Deck A
Playback-only tape deck.
2 POWER switch:
Press to turn power
- ON and ­ OFF.
3 Deck A operation keys / indicators
@ , # keys : (Play keys)
@ , # indicators : (direction indicators)
Tapes are played in the directions
indicated by their respective indicators.
1 key:
Rewind key (for fast winding of tape
toward the left reel seen from you)
33 key:
Fast forward key (for fast winding of
tape toward the right reel seen from
you)
7 key:
Stop key
4 Cassette holder (Deck A)
Press the area marked "PUSH/OPEN
0" to load or eject a tape.
5 Cassette holder (Deck B)
Press the area marked "PUSH/OPEN
0" to load or eject a tape.
6 Deck B operation keys
@ , # keys : (Play keys)
@ , # indicators : (direction indicators)
Tapes are played in the directions
indicated by their respective indicators.
1 key:
Rewind key (for fast winding of tape
toward the left reel seen from you)
33 key:
Fast forward key (for fast winding of
tape toward the right reel seen from
you)
7 key:
Stop key
¶ REC/ARM key:
Press in stop mode to start recording
or press in record mode to let the
recording pause after leaving a non-
recorded blank of 4 seconds.
indicator : (Recording indicator)
8PAUSE key:
Press to let recording pause temporarily.
7 REC LEVEL control:
Adjusts the recording level.
8 DOLBY NR key:
Press to select the Dolby Noise Reduction
mode.
9 DUBBING key:
Press to select the DUBBING mode.
0 REV.MODE key:
Press to select the REVERS mode.
! Deck B
This deck is capable of both playback and
recording.
@ Reverse mode indicators
# DOLBY NR indicator
$ DUBBING indicator
DISPLAY
DOLBY NR reference level
DISPLAY
(dB)
--5
0+3
+6
(dB)
DPSS
TAPE
B
AUTO REVERSE
TAPE
A
AUTO REVERSE
POWER
- ON ­ OFF
1
@#
7
@#
7
¡
18PAUSE REC/ARM
¡
REC LEVEL
MIN
MAX
PUSH/OPEN
0
PUSH/OPEN
0
REV.MODE DOLBY NR
DUBBING
DUBBING
DOLBY NR
p
O
(dB)
--5
0
+3
+6
(dB)
DUBBING
DOLBY NR
p
O
2
34
5
6 7
8
9
0
@#$
1
!
PEAK LEVEL METER
PEAK LEVEL METER
CT-401/KXF-W1030
CT-403/KXF-W3030
background image
Pin No.
Pin Name
I/O
Description
Active
HL
1
AC-CHK
I
Power failure input.
AC on
AC off
2,3
VSS
I
Connected to ground.
4
SYS-DATA
I
System control data in.
5
SYS-BUSY
I/O
System control busy output.
6
DOLBY
O
Dolby NR output.
off
on
7
METER-GAIN
O
Meter amplifier gain control.
other
DPSS
8
REC/PB
O
Dolby NR REC/PB control.
PB
REC
9
PB-EQ/NORMAL
O
PB EQ. switch control.
70u
120u
10
REC-EQ-TYPE 1
O
Rec EQ. switch (TYPE 1) control.
11
REC-EQ-TYPE 2
O
Rec EQ. switch (TYPE 2) control.
12
SYS-DO
O
Connected with system data.
13
LED-A-FWD PLAY
O
LED control port of A FWD PLAY.
14
LED-A-REV PLAY
O
LED control port of A REV PLAY.
15
LED-B-REV PLAY
O
LED control port of B REV PLAY.
16-20
NC
-
Unused.
21
SOL-A
O
A deck solenoid control.
22
SOL-B
O
B deck solenoid control.
23
VSS
-
Connected to ground.
24
VDD
-
Power supply(+5.0v).
25
MECHA-VCC
-
Control port of power supply for deck.
Play
Stop
26
REC
O
Control port of REC/PLAY.
Rec
Other
27
REC-MUTE
O
Muting control port for recording.
Other
Rec
28
A/B
O
Control port of A or B deck.
A play
Other
29
DUBBING
O
Unused.
30
BIAS
O
Bias control port.
Other
Rec
31
INPUT-MUT
O
Input muting control.
off
on
32
LINE-MUTE
O
Line muting control.
off
on
33
A-REEL
I
Reel puls input of A deck.
34
HALF-SW
I
Half switch input of A deck.
35
A-MODE-SW
I
Mode switch input of A deck.
Stop
Play
36
B-REEL
I
Reel puls input of B deck.
37
B-HALF-SW
I
Half switch input of B deck.
38
B-MODE-SW
I
Mode switch input of B deck.
39
B-REC-FWD-SW
I
Forward rec detection switch input.
40
B-REC-REV-SW
I
Reverse rec detection switch input.
41
DO
O
Data output to IC601(BU2099FV).
42
SI
-
Unused.
43
CLK
O
Clock output to IC601(BU2099FV).
44
LCK
O
IC601(BU2099FV) LCK.
45
OE
O
IC601(BU2099FV) OE.
46
NC
-
Unused.
47
SDA
O
EE PROM(IC304) SDA.
48
SCL
O
EE PROM(IC304) SCL.
49
NC
-
Unused.
50
RESET
I
Reset signal input.
51
VDD
-
Power supply(+5.0v).
52
NC
-
Unused.
53
VSS
-
Connected to ground.
54
CF 6.0 MHz
-
Main system clock.
55
CF- 6.0 MHz
-
Main system clock.
56
VDD
-
Power supply(+5.0v).
57-59
K1-K3
I
Key(1-3) input.
60
MODE-SW
I
Mode switch input.
61
NC
-
Unused.
62
A-CRO2
I
A CrO2 switch input.
CrO2
Nor
63
B-CRO2
I
B CrO2 switch input.
CrO2
Nor
64
METER
I
Input port of level meter.
1. Pin description of microprocessor. LC865612A(IC302)
CT
-401/403/KXF-W1030/W3030
3
CIRCUIT
DESCRIPTION
2. Pin description of LED driver. ( BU2099FV ,IC601)
3. Key matrix
Pin No.
Pin Name
Description
Active
Remarks
Port
SW1
SW2
SW3
SW4
SW5
SW6
HL
K1
A FWD
* A REV
A
A
A
-
6
L1
Level Meter
X
(Pin 57)
PLAY
PLAY
STOP
FF
REW
7
L2
Level Meter
X
K2
B FWD
* B REV
B
B
B
REC/
8
L3
Level Meter
X
(Pin 58)
PLAY
PLAY
STOP
FF
REW ARM
9
L4
Level Meter
X
K3
* REV.
DUBBING
DOLBY
B
--
10
L5
Level Meter
X
(Pin 59)
MODE
NR
PAUSE
11
A-REV
1 WAY/1WAY
X
W3030 only
* KXF-W3030 only
12
B
1WAY/REV
X
W3030 only
( ) u-COM port
13
C
REV/REV
X
W3030 only
14
B-FWD
B-FWD
X
W3030 only
15
REC
REC LED
X
16
NR
DOLBY NR LED
off
on
17
DUBBING
DUBBING LED
off
on
: LED lights on
X : LED lights off
4. Mode SW
Port
SW1
SW2
SW3
(Pin 60)
1 WAY + 1 WAY
1 WAY + REV.
REV. + REV.
( ) u-COM port
background image
CN105
To Frequency counter
CT-401/403/KXF-W1030/W3030
4
ADJUSTMENT
(b) AZIMUTH ADJUSTMENT
(c)
(a) AZIMUTH ADJUSTMENT
SYSTEM CONNECTIONS
No.
ITEM
INPUT
SETTINGS
OUTPUT
SETTINGS
CASSETTE DECK
SETTINGS
ALIGNMENT
POINT
ALIGN FOR
FLG.
CASSETTE DECK SECTION
TAPE: NORMAL, DOLBY: OFF, INPUT: LINE IN
0 dBs = 0.775 V
I. REC/PLAY HEAD
[ 1 ]
DEMAGNET-
IZATION
­­
POWER OFF
Remove the cassette door.
REC/PLAY
head
Demagnetize the REC/PLAY
head with a head
demagnetizer.
[ 2 ]
CLEANING
­
­­
­
PLAY
REC/PLAY
head, erase
head, capstan
pinch roller
Clean the REC/PLAY head,
erase head, capstan and
pinch roller using a cotton
swab slightly damped with
[ 3 ]
AZIMUTH
(A)
MTT·114, TCC-153
0 kHz, -10 dB
(B)
PLAY
Azimuth
adjustment
screw
Maximum output.
(a)
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
(b)
(c)
III. PC BOARD
< 1 >
PLAYBACK
LEVEL
MTT-150
400 Hz (200 nWb)
(B)
PLAY
DECK B
SFR101 (L)
SFR102 (R)
Output level :
±1 dBs
< 2 >
< 3 >
BIAS
REC BIAS
OSC
FREQUENCY
Recording
L107
105 kHz
± 3 kHz
Record 1kHz and 10kHz in
alternation and playback.
Record and playback at
maximum REC volume
position.
CURRENT
(A)
1 kHz, -20 dBs
10 kHz, -20 dBs
(B)
SFR105 (L)
SFR106 (R)
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.
< 4 >
RECORD
LEVEL
(A)
1 kHz, -20 dBs
(B)
SFR107 (L)
SFR108 (R)
0 dBs
± 3 dBs
alcohol.
the tape.
LINE IN
REC
PLAY
LINE OUT
SYSTEM CONTROL
L
R
(A)
(B)
AC voltmeter
AG
Oscilloscope
AC voltmeter
Frequency counter
KXF-W3030
KXF-W1030
background image
ACE
G
I
BD
F
H
J
2
1
3
5
7
4
6
1
1
1
I
I
G
G
O
I
1
15
16
1
1
1
5
2
2
9
1
110-120V
220-240V
110
20
11
9
GO
O
OG
I
3
3
1
15
2
E
B
E
B
E
B
E
B
E
B
E
B
E
B
1
15
2
2
1
3
1
E
B
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
L
R
L
R
PLAY
REC
AC SELECT SW
B
E
B
E
B
E
B
E
E
B
E
B
E
B
E
B
E
B
E
B
2
1
5
1
5
1
1
2
B
E
B
E
B
E
1
3
3
3
1
47
SYSTEM
CONTROL
LINE
OUT
POWER
REC LEVEL
LINE
IN
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD(Component side view)
5
6

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