Kenwood KX-58W User manual

| STEREO CASSETTE TAPE DECK v D
e | KŁ58W/s8GWw |NENWOO
w SERVICE MANUAL
©1989-4 PRINTED IN JAPAN
B51-3792-00(T)2722
Knob (POWER) Cassette lid* Dressing plate * Tape counter Cassette lid* Metallic cabinet*
(K27-1965-04) (A53-1098-03) (B03-2571-04) (B35-0036-05) (A53-1099-03) (A01-1739-01)
ENWOOD sten oouets cas perre cece kx-aaćw
»——
=>
Phone jack (3P) Knob (OPERATION)* Slide switch Knob (OPERATION) * Panel*
(E11-0162-05) (K29-3582-03) x 4 (S31-1017-05) (K29-3582-03) x 6 (A20-5752-02)
: Knob
(REC BALANCE, REC LEVEL)
(K29-3591-04)
<=
1 > ui À
= ed
L N
GOD o
Phono jack (4P) AC inlet*
(E13-0446-05) (EO3-)
Foot
(J02-0161-04:Front) x 2
(J02-0366-15:Rear) x 2
<=
*Refer to Parts List on page 35.
Photo is KX-58CW.

= KX-58W/58CW
CONTENTS D
AGCESSRIES M 2
CONTROLS: & INDICATORS nennen sn 3
DISASSEMBLY FOR REPAAIR 2 4
BLOCK & LEVEL DIAGRAM nes nei 5
CIRCUT DESCRIPTION unse aa) 6
MECHANISM DESCRIPTION 2. 12
ADJUSTMENT. „use 19
REGLAGES us een ea Ri ea 20
ABGEEJCH aa ies et ie 21
Accessories
Audio cord
N
ADJUSTMENT/REGLAGES/ABGLEICH......................... 22
VOLTAGE TABLES: Zus. 22
P:C BOARD «rush ten OWA lee Ni doco 23
SCHEMATIC DIAGRAM........ eerie A 29
EXPLODED VIEW (MECHANISM)... 33
EXPLODED: VIEW (UNIT) iic Rb ets 34
PARTS: LIST MM M 35
SPECIFICATIONS. sde ett eren Back cover

KX-58W/58CW
CONTROLS & INDICATORS
PEAK LEVEL METER
| DUBBING keys (> NORMAL,
>> HIGH)
These keys are used when performing :
tape-to-tape dubbing.
r CH
| à |
| OFF |
CS |
| OC [oes system]
EL cl
KX-58W
DOLBY NR switch
COUNTER/RESET key
This key is used to reset the counter to
“000”.
O— DUBBING — o m O ORECB
\ > NORMAL > HIGH RELAY (A » B)
l50(8v NR REC BALANCE REC LEVEL Press this key to perform relay play.
| | CENTER
| BOFFC | AEN
I I
1 DOzoerscna] |
Le e zen sel
KX-58CW
REC LEVEL control knob
This knob is used to adjust the record.
ing level. ‘
This switch is used to select the Dolby
noise reduction among ‘’B’’, ''C'' and
“OFF” positions. (KX-58CW)
This switch is used to turn the Dolby
noise reduction ON and OFF. (KX-58W)
REC BALANCE control knob
This knob is used to adjust the balance
of the recording level between L-
channel and R-channel.
POWER switch
KENWOOD STEREO DOUBLE CASSETTE DECK KX-5BCW
PEAK LEVEL METER
O— DUBBING —Q co orce
» NORMAL > HIGH RELAY (A > B)
EEE
CENTER a 5 6
8 or c
nb di ` 7.89
Q DOLBY NR REC BALANCE REC LEVEL
A
PLAY BACK
DEEE)
Eject/Stop (A/M) key
When the deck is operating, pressing
this key stops operation, and pressing
it again opens the cassette holder.
Fast forward (>>) key
PHONES jack
(KX-58CW only)
Rewind (<<) key
Play (>) key
KX-58CW
am II PAUSE
PAUSE (II) key
Eject/Stop
(A/m) key
Fast forward (>>) key
Rewind (<4) key
Play (>) key
REC key

|
KX-58W/58CW
-
DISASSEMBLY
FOR
REPAIR
*Take out the case beforehand.
1.
Remove
the
three
screws
@
and
undo
the
three
catches
©.
then
detach
the
dressing
panel.
2.
Press
the
EJECT
button,
then
detach
the
cassette
lid
©
from
the
cassette
holder.
3.
Detach
the
two
VR
knobs
@.
4.
Remove
the
two
screws
@
and
undo
the
two
catches
O,
then
put
out
the
sub
panel
towards
you.
5.
Disengage
the
tape
counter
belt
O.
6.
In
the
EJECT
mode,
remove
the
eight
screws
Q
installing
the
mechanism,
then
take
out
the
mechanism
in
the
direc-
tion
of
arrow
©.
7.
Undo
the
five
catches,
then
detach
the
switch
board
QD.

KX-58W/58CW
BLOCK & LEVEL DIAGRAM
— 5.5dBs — 9dBs
411mV 275mV
N WO2-0693 nl
CUT
ooer
E
©)
LINE
out
LINE (X)
MUTE Po 10
IC 2 py
(KX-58W)
P.B EQ.SW
LINE
NEA
DEMONE
O
-
72dBs
FILTER
HEAD
011,12
0.19mV
PHONE
DECK B
EM
REC/P.B #+>H
HEAD = REC LEVEL
CONTROL
H
BUFFER CIE
AMP
BALANCE
7 VR
IC 2
R/P
CONTROL
VR6,7
BIAS
REC
EQ.
Be
LEVEL
inr
AMP
`
VR9,IO
024
DECK
A
L3,4
07,8
(X) : SPEED MECHANISM
VRS,6 MUTE ADJ. MOTOR
019
DECKB
BIAS
ERASE
ae
d
IC
3
A.B
MECHA
HEAD IC8,
[—
dl
PLAY
SW
REC
EQ.SEL
y
com
Q20,21
BIAS
X)
BLAS
SW
E
B
MECHA
SELECTOR
022,83
REC.
SW
a SPEED MECHANISM
ADJ MOTOR
Q23
VRIII2

KX-58W/58CW
CIRCUIT DESCRIPTION
FUNCTION OF COMPONENTS
Recording/Playback unit (X28-1980-10-11)
Components
Use/Functions
Operation/Condition/Compatibility
C1 LA3246
Playback EQ IC
C2 uPC1330HA
Head SW IC (Deck B)
Controlled by pin 1 of IC3. Pin 4 becomes 5 V in
recording and O V in playback.
LM6416F-2227
Microprocessor
IC4 HA12136
Dolby B NR IC
KX-58W only.
uPC7818HF
+18 V AVR
C6 M51951ASL Reset IC
CZ M5218P-A REC EQ amplifier NF constant is determined by IC8 and IC9 to ob-
NJM4565D tain the recording equalizer property.
IC8,9 BA6251 EQ selection Pins 1-7 of IC8 (IC9) serve to control the respec-
tive equalizer devices:
IC10 TD62554S REC EO selector Controlled by 029, O16 and Q17 to control IC8
and IC9.
IC11 AN6888 Meter IC 5-point display x2... —10, —6, 0, +3, +6 dB
IC12 M5218P-A MPX buffer
NJM4565D-D
01,2 2SC1740S (Q,R) Playback EQ output SW (Deck B) Controlled by Q15. ON when deck B is played
2SC945(A) (O,P) and OFF when deck A is played.
03,4 2SC1740S (Q,R) Playback EQ output SW (Deck A) Controlled by 015. ON when deck A is played
2SC945(A) (Q,P) and OFF when deck B is played.
05,6 2SC1740S (Q,R) Playback high-frequency compensation SW Controlled by Q16. Normally ON. OFF only in
2SC945(A) (Q,P) (Deck A) high-speed dubbing to decrease playback high-
frequency compensation amount.
Q7,8 28C17408 (O,R) REC muting Controlled by 027. ON in other than recording to
2SC945(A) (Q,P) mute the recording system signal.
09,10 2SC2878(B) Line muting Controlled by 028. ON in other than playback to
mute the line system signal.
011,12 25C1845 (F,E) Headphone amplifier
Q13,14 2SC1740S (Q,R) Playback EQ 120 4/70 u SW Controlled by Q15. Q13 turns ON when deck A is
2SC945(A) (Q,P) played and O14 turns ON when deck B is played.
Q15 28C17408 (Q,R) Playback EQ 120 4/70 y inverter Controlled by pin 9 of IC3. ON when deck A is
2SC945(A) (Q,P) played and OFF when deck B is played.
Q16 2SC1740S (Q,R) Playback EQ inverter ON only in high-speed dubbing. Otherwise OFF
2SC945(A) (Q,P)
|
Q17 2SC1740S (Q,R) EQ speed inverter Controlled by Q16. OFF in normal dubbing and
2SC945(A) (Q,P) ON in high-speed dubbing.
018 2SC2003 (L,K) Dolby IC 14 V AVR control transistor Converts signal system 18 V into Dolby 14 Y
Q19 2SD863 (E,F) Bias OSC Oscillates at 105 kHz.
020 2SC3246 Bias current METAL SW ON in recording on metal tape
021 2SC3246 Bias current CrO? SW ON in recording on CrO2 or metal tape
022 2SC3246 Bias SW ON in recording to turn ON the bias oscillation
023 2SC1740S (Q,R)
2SC945(A) (Q,P)
Bias SW
ON soon at power ON
Q24 2SC733(A) (Q,P)
2SC933SC (Q,R)
A mechanism speed control
ON in high-speed operation
€

KX-58W/58CW
CIRCUIT DESCRIPTION
9 ©
Components
Use/Functions
Operation/Condition/Compatibility
2SA733(A) (Q,P)
2SAY33S(O,R)
REC mut
Controlled by pin 3 of IC3. ON in other than
recording.
2SA733(A) (Q,P)
2SA933S(Q,R)
| Line mute SW
Controlled by pin 4 of IC3. ON in other than
playback.
2SA733(A) (Q,P)
2SA933S(Q,R)
REC mute SW
Controlled by Q25. ON in other than recording.
2SA733(A) (Q,P)
2SA933S(Q,R)
Line mute SW
Controlled by Q26. ON in other than playback.
2SC1740S(Q,R)
2SC945(A) (0,P)
Tape selector SW
ON with metal tape loaded on deck B
2SC3246
| B motor SW
Controlled by pin 27 of IC3. In case of relay play,
OFF until the end of the tape on deck A is
reached, and ON when it is reached.
2SA733(A) (0,P)
2SA933S(Q,R)
B motor control
ON in high-speed operation
2SD863(E,F)
Microprocessor 5 V AVR
Converts 12 V for mechanism to 5 V for
microprocessor.
25D822(0,P,E)
Components
Mechanism 12 V AVR
Electric circuit module (W02-0693-05)
Use/Function
Converts to 12 V for mechanism the DC obtained
by halfwave rectification of AC IN.
Operation/Condition/Compatibility
HA12088ANT
DOLBY B/C noise reduction
KX-58CW only.

KX-58W/58CW
CIRCUIT DESCRIPTION
MICROPROCESSOR
LM6416F-2227
1. Operational specification
The KX-58W/58CW is a mechanism logic double deck using e Relay operation
two mechanisms made by GIKEN. Its circuit control is per- Relay playback (only once) from deck A to B
formed by a microprocessor by use of inputs from mechan- e Timer operation
ism attached switches and tact switches. Timer playback: decks A and B either possible
Timer recording: deck B only
1-1 Functions
(1) Features (2) Microprocessor controlled subjects
e One way X2, double cassette e Selector circuits such as of recording/playback, deck
Deck A: playback only AIB, etc.
Deck B: recording and playback * Dolby IC
e Dubbing * Bias oscillation circuit
Deck A to B: normal speed dubbing e LED indication
Deck A to B: high speed dubbing
BRP PDo PC3
BIAS PD: 2 PC2 BCPM
R.MUTE PD2 3 PCI KSO
L.MUTE PD3 4 PCo KSI
EXtal 5 PA3 KR 3
Xtal 6 Paz KRZ
TEST INT 7 PAI KRI
RESET RES 8 PAo KRO
AHI REo 9 Voo
D ON PE! PGo HISP
CHI PE2 PFs L.DUB
D RP PEs PF2 LHDB
TEST PFi L RLY
Vss PFo LREC
1-2 Pin Functions
Pin name Designation Description
PDo BRP B REC/PLAY selector
PD1 BIAS B BIAS control
PD2 RMUT B REC MUTE control
PD3 LMUT LINE MUTE control
EXtal
Xtal
Oscillator
INT Test mode setting : Normal
RES RESET input : Normal
PEo AIB select A
PE1 Dolby ON/OFF
PE2 Dolby B/C
PE3 Dolby REC/PLAY
TEST Connected to GND (LSI test pin)
Vss Connected to GND

KX-58W/58CW
CIRCUIT DESCRIPTION
Pin name Designation Description
PFo LREC REC LED : ON
PF: LRLY Relay LED l : ON
LHDB high speed dubbing LED : : ON
LDUB Normal speed dubbing LED : : ON
HISP Motor speed, EQ speed select : Normal
Connected to +5 V
Key input H: without input L: with input
Key scan output
B motor ON/OFF
N.C. (OPEN)
1-3 Keys
This unit turns ON/OFF by the mechanism operation because
of using mechanism logics. Its circuit control is performed with
inputs of leaf switches.
Name Operation
PLAY SW (A mechanism) Decks A/B: A selected
ON when head of A mechanism Line mute turns ON and 0.5 sec later, OFF.
ascends. gnored when deck B is in recording except for dubbing.
Decks A/B: B selected
Line mute turns ON and, in case of during play of deck B, OFF 0.5 sec later.
gnored when deck B is in recording except for dubbing.
B main motor ON.
PLAY SW (B mechanism) (1) Normally
ON when head of B mechanism
ascends. Decks A/B: B selected
Line mute turns ON, and 0.5 sec later, OFF.
gnored when deck A is in play.
Decks A/B: A selected
Line mute ON.
Ignored when deck A is in play.
(2) For recording (not dubbing)
Line mute and recording mute turn ON, and O.5 sec later, OFF.
At OFF Line mute and recording muter ON.
Bias OFF.
(3) For dubbing
Line mute and recording mute turn ON and, when deck A is in play, OFF O.5 sec later.
At OFF Recording mute ON.
Line mute ON unless deck A is in play.
Bias OFF.

KX-58W/58CW
CIRCUIT DESCRIPTION
Operation
(1) Normally
At ON REC/PLAY: REC selected, Decks A/B: B selected
Bias ON and REC LED ON.
Ignored when deck A is in play.
REC/PLAY: PLAY selected, Decks A/B: A selected
REC LED OFF.
Ignored unless REC is engaged.
REC SW (B mechanism)
ON when REC key is pressed
(with cassette hub)
(2) For dubbing
At ON REC/PLAY: REC selected, Decks A/B: A selected
Bias ON and REC LED ON
REC/PLAY: PLAY selected.
REC LED OFF.
Effective only when PLAY SW and REC SW are both OFF.
Dubbing LED ON.
High speed dubbing LED and relay LED OFF.
Effective only when PLAY SW and REC SW are both OFF.
High speed dubbing LED ON.
Dubbing LED and relay LED OFF.
Effective only when PLAY SW and REC SW are both OFF.
Relay LED ON and B motor OFF.
High speed dubbing LED and dubbing LED OFF
At OFF
Dubbing key
High speed dubbing key
Relay key
1-4 Operation
Key handling
Operation
Press the dubbing key.
Dubbing LED ON
Let deck A play and set PLAY SW
Dubbing (including | to ON.
Decks A/B: A selected
Line mute OFF 0.5 sec later.
High-speed mode) Press the REC key of deck B, and
set the REC SW and PLAY SW to
ON.
REC/PLAY: REC selected. Dolby OFF. Bias ON.
Speed is high for high-speed mode.
Line mute and recording mute turn ON O.5 sec later.
Dubbing starts.
Press the relay key.
Relay LED ON and B mechanism motor OFF.
Let deck A play and set PLAY SW
to ON.
Decks A/B: A selected.
Line mute OFF 0.5 sec later.
B mechanism motor OFF.
Relay play Press the PLAY key of deck B.
Although the PLAY key of deck B is locked, since the motor is OFF, the
head does not ascend and the PLAY SW of deck B thus remains OFF.
Deck A stops (as tape end is
reached or an operation key is
handled)
B mechanism motor ON and thus ON PLAY SW of deck B.
Decks A/B: B selected.
Line mute OFF 0.5 sec later.

KX-58W/58CW
CIRCUIT DESCRIPTION
1-5 Initial status 1-6 Test mode
A
test
mode
is
added
for
aiming
at
simplified
speed
ad-
Item Status justment.
BRP PLAY
BIAS
OFF
(1)
Setting
method
-
Put
in
4
PIN
into
contact
with
GND
(momentarily).
REC MUTE ON
LINE
MUTE
ON
(2)
Contents
i)
When
the
test
mode
is
entered,
an
''H''
signal
is
output
Dolby
RIP
PLAY
to
pin
HISP.
Namely,
the
mechanism
is
set
to
the
high
speed
e
=
HISP
Normal
speed
mode.
S
BCPM
OFF
and
ON
3.5
sec
later.
ii)
Each
time
the
high
speed
dubbing
key
is
pressed,
pin
HISP
>
is
inverted.
as All OFF
(3)
Canceling
method
(Make
pin
4
open.
That
pin
4
remains
in
contact
with
GND
is
inadvisable.)
i)
Press
the
dubbing
key
or
the
relay
key.
ii)
Perform
recording.
Needless
to
say,
the
test
mode
will
also
be
canceled
by
pow-
er
OFF.
1-7 Timing chart
(D STOP>PLAY STOP (A)
A
L.MUTE | 0.5 s
1 T
| | |
| I
A PLAY SW ON A PLAY SW OFF... earlier ap-
prox. tens of usec with line
mute ON
(2) STOP REC - STOP (B)
AHI
BRP
E
EM
PR
nn,
BULL
Qu.
af
vU
I
mur
ue.
00
To
70
|
0.5
s
LMUT
Zu
ae
O
à
coal
I
DRP I
HISP
PLAY SW and Ces :
:
REC
SW,
OFF
only
in
dubbing
PLAYS
EN
(almost
the
same
HISP:
only
in
high
REC
SVV
ON
time)
E
speed
dubbing
3
11

J KX-58W/58CW
MECHANISM DESCRIPTION
1.
Function
Description
of
Main
Parts
(Fig.
1
—
3)
1-1.
1-2.
1-3.
1-4.
1-5.
ASSIST GEAR (36) [for playback]: This is driven by the
TRIGGER ARM (II) (26) and swings the SHIFT ARM (29).
SHIFT ARM (29) [for playback]: This is swung by the
cam of the ASSIST GEAR (36) and moves up the HEAD
BASE (89) via SPRING (72).
PLAY ARM (30) [for palyback]: Control is made by the
BOSS of the HEAD BASE (89). The TAKEUP REEL ASS'Y
is operated by the PLAY GEAR (34) on the PLAY ARM
(30).
CLUTCH ASS'Y (42) [for transmission of rotation in the
Play, FF, REW mode]: This transmits the rotation from
the flywheel to both left and right reels via clutch for fast-
forward and rewind.
TRIGGER ARM (II) (26) [for playback]: This is swung by
the PLAY LEVER (16) via TRIGGER ARM (I) (24), and
riggers the ASSIST GEAR (36).
+
2.
Stop
Status
(Fig.
1),
(Fig.
3)
221;
2-2.
12
(89) HEAD BASE
The SHIFT ARM (29) is energized by the SPRING (77).
The cam of the ASSIST GEAR (36) comes contact with
the edge of the SHIFT ARM (29).
(34) PLAY GEAR
N
(77) SPRING
(29) SHIFT ARM
Fig. 1
1-6.
1-9.
2-3.
2-4.
LOCK CAM LEVER (II) (23) [for ejecting]: This prevents
the EJECT LEVER (22) from shifting during stop opera-
tion, and it also inhibits the auto stop operation in the
stop mode.
LOCK CAM LEVER (1) (20) [for locking of operation lever]
TRIGGER ARM (27) [for auto stop]: During the auto stop
operation, this is swung by the power transmitted from
the flywheel via the AUTO PULLEY (38) and AUTO GEAR
(33), and slides the LOCK CAM LEVER (I) (20).
AUTO SENSOR (21) [for auto stop]: This is swung by
the T REEL ASS'Y (8) and locks the AUTO CAM (32)
when the rotation stops.
. PAUSE LOCK ARM (14) [for auto stop]: This inhibits the
auto stop operation in the pause mode.
. AUTO LOCK ARM (28) [for auto stop]: This inhibits the
auto stop operation during the stop or pause mode.
The TRIGGER ARM (II) (26) is energized by the SPRING
(74).
The cam located on the rear of the ASSIST GEAR (36)
comes contact with the boss at the edge of the TRIG-
GER ARM (II) (26) so that the rotation of the GEAR (36)
is locked.
(42) CLUTCH ASS'Y
(30) PLAY ARM
(36) ASSIST GEAR
PAUSE
STOP
Parts Discription (Front perspective view)

KX-58W/58CW
2
MECHANISM
DESCRIPTION
-—
(8)
(42)
E REEL DISK
CLUTCH ASS'Y ASS'Y
MOTOR
(39)
DRIVE BELT
(41) (38)
F.R. BELT AUTO PULLY
(7)
FLYWHEEL ASS'Y
(40)
AUTO BELT
(36) ——
_
ASSIST
GEAR
xa
Fig. 2 Discription of power transmission
(32)
~
AUTO
CAM
(42)
| CLUTCH ASS'Y
(33)
AUTO GEAR
(27)
TRIGGER
ARM
(26)
TRIGGER ARM (II)
ati,
(14)
(74)
PAUSE
LOCK
ARM
TRIGGER
ARM
SPRING
(28)
AUTO LOCK ARM
(31)
PAUSE CAM
(23)
LOCK CAM LEVER (II)
(20)
LOCK CAM LEVER (I)
PAUSE
STOP
FF
REW
24)
|
PLAY
REC
TRIGGER
ARM
(I)
Fig. 3 Parts Discription (Rear perspective view)

KX-58W/58CW
MECHANISM
DESCRIPTION
3. FF (Fast-Forward) Operation (Fig. 4)
3-1. The CLUTCH ASS'Y (42) is stretched in the
direction of c» (@) by the resultant of the
SPRING (71) and the FR BELT (41).
3-2. In the stop mode, the CLUTCH ASS'Y (42)
stops at the neutral position by the lug (or pro-
trusion) (@) of the FF LEVER (18).
3-3. When the FF LEVER is pressed and locked,
the CLUTCH ASS'Y (42) falls down into the
concave section (@) of (18).
3-4. The gear of the CLUTCH ASS'Y (42) is engag-
ed with the FF GEAR (34).
3-5.
The
rotation
of
the
FLYWHEEL
(7)
is
transmit-
ted
to
the
T
REEL
ASS'Y
(8)
via
the
CLUTCH
ASS'Y
(42)
and
the
FF
GEAR
(34).
Fig. 4 F.F.
4. Rewind (REW) Operation (Fig. 5)
4-1. The CLUTCH ASS'Y (42) is streched in the
direction of c» (@) by the resultant of the
SPRING (71) and the FR BELT (41). (Fig. 4)
4-2. In the stop mode, the CLUTCH ASS'Y (42)
stops at the neutral position by the lug (or pro-
trusion) (@) of the FF LEVER (18). (Fig. 4)
4-3. When the REW LEVER (17) is pressed and
locked, the CLUTCH ASS'Y (42) is rotated in
the direction of (@) against the force of SPR-
ING (71) due to slope (@).
4-4. The gear of the CLUTCH ASS'Y (42) is engag-
ed with the gear of the S REEL ASS'Y (9).
4-5. The rotation of the FLYWHEEL (7) is transmit-
ted to the S REEL ASS'Y (9) via the CLUTCH
ASS'Y (42).
REWING
Fig. 5 REW
14

KX-58W/58CW
MECHANISM DESCRIPTION
5. Play Operation (Fig. 6)
5-1.
5-2.
5-3,
5-4.
5-5,
5-6.
5-7.
5-8.
59.
Press the PLAY LEVER (16) ( 9 @).
The TRIGGER ARM (I) (24) which is fixed on the PLAY
LEVER (16) with the screw is also moved in the direc-
tion of = 6.
The notch (($) of the TRIGGER ARM (I) (24) comes
contact with the TRIGGER ARM (M (26). ( m @.) At
the same time, the notch (@) of the TRIGGER ARM (I)
(24) comes in touch with the notch (©) of the FF and
REW LEVERS (18),(17). ( sp ©.)
The TRIGGER ARM (I) (24) swings in the direction of
=) © using (O), (©) as supporting points and (@),
(©) as application points.
The TRIGGER ARM (II) (26) is swung in the direction of
= © by notch (($) of the TRIGGER ARM (I) (24).
The edge (@) of the TRIGGER ARM (II) (26) is unlock-
ed from the section (@) of the ASSIST GEAR (36).
Since the cam (($) of the ASSIST GEAR (36) is pushed
by the protrusion (@) of the SHIFT ARM (29), the
ASSIST GEAR (36) is rotated in the direction of C»
O.
When rotated a bit, the gear section of the ASSIST
GEAR (36) is engaged with the gear of the FLYWHEEL
(7) and then it is continued.
By the cam (($) of the ASSIST GEAR (36), the SHIFT
ARM (29) is lifted against the SPRING (77), then the
hook ((8) on the edge of it is swung in the direction of
+ O.
Fig. 6 Play (Unlock ASSIST GEAR)
STATUS OF STOP
Fig. 7 Play (Rotate ASSIST GEAR)

KX-58W/58CW
MECHANISM DESCRIPTION
5-10. The HEAD BASE (89) is slid on the surface of the chas-
sis. The hook of the HEAD BASE (89) and that of the
SHIFT ARM (29) are connected with the SPRING (72).
5-11. When the SHIFT ARM (29) is lifted, the HEAD BASE (89)
is also moved up and comes in contact with the notch
(Q), so that the unit (cassette deck) is entered the play
mode.
5-12. In the play mode, due to the rise of the HEAD BASE (89),
the PLAY ARM (30) is swung in the direction of =) Q
(by the SPRING (76)) and further pushed up by the BOSS
(Sof the HEAD BASE (89).
5-13. When the HEAD BASE (89) reaches the play position,
the PLAY GEAR (34) is engaged with the CLUTCH ASS'Y
(42) and the T REEL ASS'Y (8) to transmit the rotation.
5-14. The ASSIST GEAR (36) still rotates even after the
HEAD BASE (89) stops and stops when the boss (O)
of the TRIGGER ARM (II) (26) comes in contact with
the stopper (($) of the ASSIST GEAR (36). (See Fig
9.)
5-15. During the PLAY LEVER (16) is locked, the TRIGGER
ARM (ID (26) is held at the position shown in the figure
(Fig. 9) by the TRIGGER ARM (I) (24). (See Fig. 6.)
5-16. When the PLAY LEVER (16) is released, the TRIGGER
ARM (I) (24) becomes free and the TRIGGER ARM (ID
(26) is swung by the SPRING (74), and the ASSIST
GEAR (36) is also unlocked. (See Fig. 9, Fig. 10.)
5-17. The ASSIST GEAR (36) is rotated in the direction of
c» © by the pressure of the SHIFT ARM (29), and
stops when the boss (Q) at the edge of the TRIGGER
ARM (ID (26) comes in contact with the (@) portion of
the cam. (See Fig. 10.)
16
=
(34) ke
Om I
(42) ‘ ligi
7 R
| (89) = Gd
a
SD X M
| A i 6 Jo Le (7) +
cé b sl Je", T
ae (36)
Fig. 8 Play (move up HEAD BASE)
Fig. 10 Play (Release play mode)

KX-58W/58CW
MECHANISM DESCRIPTION
6. Auto Stop Operation (See Fig. 11)
6-1.
6-2.
6-3.
6-4.
DURING PLAY
Fig. 11
6-8.
6-9.
6-11.
The AUTO CAM (32) is rotated by the FLYWHEEL (7)
via AUTO PULLEY (38) and AUTO GEAR (33) in the
direction of c» @.
The AUTO SENSOR LEVER (21) comes contact with the
bottom of the T REEL ASS'Y (8) through the REEL
WASHER (109), SPRING (66) and the T REEL SLIDER
(108).
In the play mode, the boss ( (Y) at the edge of the AUTO
SENSOR LEVER (21) is swung in the direction of =) ©
by the rotation of the T REEL ASS'Y (8).
Since the boss (@) of the AUTO SENSOR LEVER (21)
moves around the inner edge of the AUTO CAM (32),
it is not engaged with the protrusion (GS).
6-5.
6-6.
6-7.
EM
Auto stop (Play — Auto Stop)
In the stop mode, the end section (@) of the AUTO
LOCK ARM (28) comes contact with the notch of the
LOCK CAM LEVER (ID (23).
The boss (©) of the AUTO SENSOR LEVER (21) is
pushed in the direction of = @ by the SPRING (75)
installed on the AUTO LOCK ARM (28).
.Since the boss of the AUTO SENSOR LEVER (21)
comes contact with the inner edge of:the AUTO CAM
(32) in the same way as when the T REEL ASS'Y (8) is
rotated, the auto stop operation does not function.
In the pause mode, the PAUSE LOCK ARM (14) is
swung by pressing with the PAUSE LEVER (11), and
the other end of it make the AUTO SENSOR LEVER
(21) swing in the direction of sp Q
. In the same way as the stop mode, the auto stop opera-
tion does not function.
When the T REEL ASS'Y (8) stops rotating, the boss (@)
of the AUTO SENSOR LEVER (21) is moved to the center
of the AUTO CAM (32) by the bank section (@) of the
AUTO CAM (32) and is engaged with the protrusion
(Qi.
The BOSS @of the AUTO SENSOR LEVER (21) is locked
with the PROTRUSION (3 of the AUTO CAM (32).
In this situation, the AUTO PULLEY (38) continues rota-
tion in the direction of Mb @so that the AUTO CAM (32)
is moved in the direction of sj @ with the point @ of
the AUTO GEAR (33) as the point of support.
The end of the AUTO ARM (27) is moved in the direc-
tion of Mb © and moves the LOCK CAM LEVER (20) to
release it. (See Fig. 12.)
(75)
Fig. 12
Auto stop (During STOP & PAUSE)
17

KX-58W/58CW
MECHANISM DESCRIPTION
7. Rec Operation (See Fig. 13) (16)
7-1. The REC SENSOR ARM (15) is swung in the direction
of mp @ (when the recordable cassette is loaded).
7-2. Press the REC LEVER (10) in the direction of m ©
By this operation,the REC switch (S3) is turned ON.
7-3. At this time, the PLAY LEVER (16) is pushed by the
shoulder of the REC LEVER (10), so, the unit enters the
play mode from the view point of mechanism.
Fig. 13 Rec Operation
8. Pause Operation (See Fig. 14)
8-1.
When
the
PAUSE
LEVER
(11)
is
pressed
(in
the
direc-
tion
of
m
@),
notches
@
and
®
press
the
ends
of
the
PINCH
ROLLER
ASS'Y
(37)
and
the
PLAY
ARM
ASS'Y
(30)
to
swing
them
respectively
(in
the
direction
ot
+
E
©)
8-2.
The
PINCH
ROLLER
ASS'Y
(30)
is
released
from
the
CAPSTAN
(7)
and
the
PLAY
GEAR
(34)
is
released
from
the
CLUTCH
ASS'Y
(42)
so
that
the
unit
enters
the
pause
mode.
Fig. 14 Pause Operation
18

KX-58W/58CW
P ADJUSTMENT
m,
INPUT OUTPUT CASSETTE TAPE ALIGNMENT
CASSETTE
DECK
SECTION
TAPE:
NORMAL,
DOLBY:
OFF,
INPUT:
LINE
0dBs=0.775V
] REC/PLAY HEAD
POWER: OFF Demagnetize the REC/PLAY
DEMAGNETIZATION
Remove
the
REC/PLAY
head
with
a
head
R cassette door. head demagnetizer.
REC/PLAY Clean the REC/PLAY head
head erase head, capstan and
CLEANING erase head, pinch roller using a cotton
capstan, swab slightly damped
pinch roller. with alcohol.
Azimuth
AZIMUTH MTT-114, TCC-153 adjustment Maximum output,
10kHz,-10dB screw
* The Test mode is Adjust the tape speed so
— TAPE SPEED MTT-111, TCC-110 initiated when TP4 that a 6kHz signal is
(HI SPEED) 3kHz (TEST) is connected produced at the center
-4dB momentarily to the of the tape.
GND. PLAY
| % In the Test mode Adjust the tape speed so
TAPE SPEED MTT-111, TCC-110 condition,press th that a 3kHz signal is
(NORMAL) 3kHz HIGH DUBBING Key. produced at the center
-4dB PLAY of the tape.
MTT-150
400Hz(200nWb) VR3CL) Output level: -6.0dBs
PLAYBACK MTT-256 VR4(R)
a
LEVEL
315Hz
160nWb)
YR1CL)
Output
level:
-9.0dBs
MTT-256U, TCC-160 VR2CR)
315Hz (220nWb) Output level: -5,0dBs
Adjust REC LEVEL s
(hat the REC monito Record 1kHz and 10kHz in
output becomes alternation and adjust the
(A) -29dBs at 1kHz, VR5 CL) variable resistors which
BIAS CURRENT 1kHz, -30dBs then record and VR6 CR) control the bias current
10kHz, -30dBs reproduce signal so that the same playback
of 1kHz and 10kHz level is obtained.
in alternation.
a. Record and
reproduce a lkliz Adjust the variable
RECORD LEVEL (A) signal under the resistors so that a
1kHz,-10dBs conditions set playback level of -9dBs
in «4». is obtained.
X The tape speed in the Test mode is switched alternately to NORMAL/HIGH SPEED by means of the NORMAL DUBBING key.
To cancel, press the NORMAL DUBBING key or RELAY key.
PN
mm.

KX-58W/58CW
REGLAGES
REGLAGE DE REGLAGE DE | REGLAGE DU MAGNETO MONET
P ITEM L' ENTREE L' ALIGNEMENT ALIGNER POUR
Demagnétiser la téte
POWER: OFF Tête D' ENREGISTREMENT/LECTURE
DEMAGNETISATION Eloigner la porte. | D' ENREGISTREMENT/ avec un démagnétiseur
LECTURE de téte.
Téte Nettoyer la téte
D' ENREGISTREMENT/ D' ENREGISTREMENT/LECTURE
LECTURE téte la tête d effacement, le
NETTOYAGE d' effacenent, cabestan et le galetpresseur
cabestan, avec un coton-tige
galetpresseur. légèrement imbibé d'alcool
AZIMUT MTT-114, TCC-153 Vis d'azimut Sortie maximer.
10kHz.-10dB
AQUE IMPRIMEE CX28-198X-XX)
Le mode de test est Régler la vitesse de bande
VITESSE DE MTT-111, TCC-110 initialisé quand TP4 de façon qu un signal
DEF ILEMENT 3kHz (test) est raccordé de 6kHz soit produit au
CHI SPEED) -AdB momentanément à GND. centre de la bande.
PLAY
* En condition de Régler la vitesse de bande
VITESSE DE MTT-111, TCC-110 mode de test, pre de facon qu'un signal
DEF ILEMENT 3kHz sser la touche HIGH de 3kliz soit produit au
CNORMAL) -4dB DUBBING. PLAY centre de la bande.
MTT-150
400Hz (200nWb) VR3(G) Niveau de sortie: -6,0dBs
NIVEAU DE MTT-256 VR4(D)
LECTURE 315Hz(160nWb) ) VR1(G) Niveau de sortie: -9,0dBs
MTT-256U, TCC-16 VR2(D)
315Hz(220nWb) Niveau de sortie: -5,0dBs
Régler REC LEVEL d
façon que la
sortie de moniteur Enregistrer un signal de
REC soit de -29dBs (lz et 10kHz en alternance
COURANT DE (A) a lkHz, puis en VR5 (G) et ajuster les rósistances
POLARISATION 1RHz. -30dBs registrer et VR6 (D) variables qui commandent le
10kHz.-30dBs reproduire des courant de polarité de
signaux de 1kHz et façon à obtenir le même
10kHz en niveau de lecture.
alternance.
Enregistrer et
reproduire un Ajuster les résistances
NIVEAU (A) signal de 1kHz variables de facon á
D' ENREGISTREMENT 1kHz.-10dBs dans les obtenir un niveau de
conditions lecture de -8dBs.
précisées en 445.
% La vitesse de la bande en mode de test est alternativement commutée sur NORMAL/HIGH SPEED par la touche HIGH DUBBING.
Pour annuler, presser la touche NORMAL DUBBING ou RELAY.
20