Kenwood KRC-363L User manual

RAC Soap. KENWOOD
SERVICE MANUAL
©1988-5 PRINTED IN JAPAN
isto} Brcioxcy 410/00 (@) Br sc4
Knob (BASS, TREBLE) Knob (EJECT) Escutcheon Knob (REW) Knob (FF) Knob ass’y (UP/DOWN)
(K29-3227-08) x 2 (K27-1906-08) (BO1-0400-08) (K27-1908-08) (K27-1907-08) (K29-3233-08)
|
Knob (FADER) = Knob (VOLUME) Knob (LOUD, AME) Panel ass'y * Knob ass'y (FM/AM)
(K29-3229-08) (K29-3228-08) (K29-3230-08) x 2 {A20-) (K29-3234-08)
Front and top plate
(A52-0121-08)
Output cord ass’y
(E30-2403-05)
Photo is KRD-363D.
« Refer to parts list on page 43.

KRC-363D/L
CONTENTS/DISASSEMBLY
FOR
REPAIR
CONTENTS
DISASSEMBLY
FOR
REPAIR
.........-.------
2
PC
BOARD
(FOIL
SIDE
VIEW)
...............
29
BLOCK
LEVEL
DIAGRAM
...........--------
4
SCHEMATIC
DIAGRAM
...........0
200
eee
33
CIRCUIT
DESCRIPTION
..........--2-0
ee
eee
5
EXPLODED
VIEW
(MECHANISM)
.............
41
MECHANISM
OPERATION
DESCRIPTION
........
7
EXPLODED
VIEW
(UNIT)
........--.-.-005-
42
ADJUSTMENT
..
20... 02.00
eee
eee
eee
eee
19
PARTS
EIST
accents
vag
se
ee
ols
eee
oe
ets
43
REGEAGE:
23
fed
ht
ocean
exe
ole
ole:
atte
Saeen
21
PACKING
.......
0.0
eee
ee
wees
51
ABGLEICH
a4
ob
eae
sense
Geet
BG
ea
23
SPECIFICATIONS
.............04-
BACK
COVER
PC
BOARD
(COMPONENT
SIDE
VIEW)
.........
25
DISASSEMBLY FOR REPAIR
1. Remove the screw (‘®) holding the top cover, and then
take off the top cover.
2. Remove the 3 screws (‘@) holding the bottom cover,
and then take off the bottom cover together with the
insulating paper sheet.
. Remove the Main Volume contro! knob ( @).
4. Remove the 2 screws (@) holding the panel escutch-
eon, and then take off the escutcheon.
Ww
5. Remove the 2 screws (@) holding the front panel, and
then take off the front panel.
6. Remove the 2 screws (@) holding the Cassette Mecha-
nism Ass’y, disconnect the 2 connectors (3) ), and then
take off the Mechanism Ass’y.
7. Remove the 5 screws (©) holding the sub-panel, re-
move
the
nut
of
the
volume
control
(®),
disconnect
SK
ay
ke
the
2
connectors
(®)
where
flexible
cables
are
con-
we
rT
i
nected,
and
then
take
off
the
sub-panel.
wl
|
t
|
A
Co
®
INO
Q\
7g
0 = 2
Y

KRC-363D/L
DISASSEMBLY FOR REPAIR
DISASSEMBLY OF HOLDER (ACTION PLATE)
1. Remove the screw (@) from the holder (action
plate [110]).
2. Remove the two springs (Q) from mechanism
chassis (801).
3. Hold down the EJECT button (@) with one hand.
4. Press the lever (42) with your other hand, move
the holder (action plate [110]) toward the motor,
and remove the lever (42) from projection(@)of
the mechanism chassis (801) (G}).
5. Push the holder (action plate [110]) forward.
When the projection of the arm (action [27])
reaches point(A), release the EJECT button (@).
REASSEMBLY OF HOLDER (ACTION PLATE)
1. Align the projection of the mechanism chassis
(801) with the hole in the arm (action [27]) (@).
2. Align the two tips (@) of the holder (action plate
{110]) with the claws of the holder (cassette
case [111]).
3. Insert the formed wire (99) (@) into the hole of
the lever ass‘y (EJECT) (15).
4. Align the left claw of the holder (cassette case
[111]) with the mechanism chassis (@).
5. While holding the arm (action [27]) with one
hand, push the EJECT button (@).
6. Insent the projection of the arm (action [27]) into
point @) in the side of the holder (action plate
[110]) (@).
7. Push the lever (42) outward (@) take out the
projection of the mechanism chassis (801) from
the hole in the holder (action plate [110]).Release
the EJECT button.
8. Align the projection (@) of the mechanism chas-
sis (801) with the hole of holder (action plate
[110]) with the screw.
9. Secure the holder (action plate [110]) with the
screw (@).
10. Mount the tention springs (79) and (74) on the
mechanism chassis (801) (@).

KRC-363D/L
BLOCK LEVEL DIAGRAM
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KRC-363D/L
CIRCUIT DESCRIPTION
Description of Components
MAIN UNIT
Cc t
Use/Function Operation/Condition/Compatibility
Parts No.
10501
C601
cao | Bu40616° | CMOS AND, 4 Lines
ica02_| Bu4069
1C803_| uPD1716-696
Switching iB . : 7 :
DTC114Y (for MW STOP SENS set up) VC-E = 3.5V during an MW seek operation, VC-E = OV in STOP mode.
28C2021 Switching (MW/LW select)
Turns ON in MW mode : VB-E = 0.6V, VC-E = 2.2V
VC-E = OV in LW mode. KRC-363L only.
Q252
Stabilizer
;
5
2SC2021
(forthe
miererosesiod
Power
supply
for
the
microprocessor
and
CMOS
ICs,
VE
=
5.6V.
Switching
Turns
ON
when
power
is
switched
ON,
se
OD
IZeoM
(for
the
indicator
lamp)
VB-E
= 0.6V
(The
indicator
lamp
lights.).
Q403 2SD1 469 Switching (AM power supply) Turns OFF in MW/LW mode, VE = 8.3V. Turns OFF in FM mode, VE = OV.
0404 2SA874 Switching (FM power supply) Turns ON in FM mode, VE = 8.3V. Turns OFF in MW/LW mode.
aos | DTCTaaTe
Q604 | OTCTASTF
2SA957
agoi_| 2sc2021
aso2 | 2sK246Y
aod
Q804 MW/LW tuning voltage set, VE = 1.0 ~ 8.0V (fmin ~ fmax).
asos | DTAI14YF Smenine , VC = 5V when power is turned ON, OV when power is OFF.
(microprocessor CE pin)
agog | 2sc2021 Sting
(microprocessor CE pin)
ae ' Switching for DK VR pull-up. Turns OFF when the DK signat is present.
sei eo DIES SACOG Fn ouput Turns ON when the DK signal is not present. KRC-363D only.
Q405 2SD1225M Stabilizer (Radio power supply) | Power supply for the radio, VE = 8.8V
Switching 2: 7"
Q406 28C2021 (AM/EM power supply) Turns ON in FM mode, VB-E = 0.6V, VC-E = OV
ie) ~~)

KRC-363D/L
CIRCUIT DESCRIPTION
Cc t
Use/Funetion Operation/Condition/Compatibility
Ea
\G701 | ANG262N _|T.ADVitepecvence) | SSC~*
ice01 | TOAIS79
jca02 | AN6SE6 | Op ame.
Q151 DOTC144EF Switching (FM ST indicator)
aid | DTAITAVF
a701 | DTCI4YF | Switching (T. ADV)
a7o2
VOLUME UNIT
Operation/Condition/Compatibility
lRet.No.| Parts No.
[060s [2801469 | Switching (Mute) | For audio muting ina preet or eek operation SSS
PRE AMP UNIT
ee
1€301 BA3406AL Head amp. 2-channel $C Head amp. with equalizer and meta! tape select circuit.

KRC-363D/L
MECHANISM OPERATION DESCRIPTION
Mi 54 52 83 53 36 5950 35 3416 24 25
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KRC-363D/L
MECHANISM
OPERATION
DESCRIPTION
LOADING
Insert a cassette tape (@).
2.
The
cassette
guide
(118)
pushes
te
lever
(reverse
[42])
(@).
3.
The
lever
(reverse
[42])
turns
in
the
direction
of
the
arrow
and
releases
the
lock
of
the
holder
(ac-
tion plate [110]) (@).
_
4.
Through
the
lock
releace
of
the
lever
(reverse
[42]),
the
arm
(action
[27])
is
pulled
by
the
ten-
sion
spring
(74),
which
turns
the
holder
(action
‘o.
[110)}).
The
holder
(action
plate)
descends
(@).
5. Through the descent of the holder (action plate
[110]), the holder (cassette case [111]) also
descends (@).
6. As the holder (cassette case {111]) descends,
the cassette tape pushes the lever (lock plate
{29]). The lever (lock plate {29]}) then releases the
lock of the lever assembly (head plate [14]) (@).
7.
As
the
arm
(action
[27])
turns,
the
lock
of
the
lever
assembly
(eject
[15])
is
released
(@).
8.
The
lever
assembly
(eject
{15])
is
pulled
by
the
tension
spring
(79)
and
moves
forward
(@).
9.
Through
the
movement
of
the
lever
assembly
(eject
[15]),
the
lever
(49)
also
moves
forward
and
turns
on
the
slide
switch
S1.
As
the
slide
switch
S11
is
turned
on,
electricity
is
supplied
to
the
motor
assembly
(M1)
(@).

10.
11.
12.
KRC-363D/L
MECHANISM OPERATION DESCRIPTION
As the holder (cassette case [110]) descends, the
Cassette tape pushes the lever (lock plate {29]).
The lever (lock plate [29]) then releases the lock of
the lever assembly (head plate [14]) (@).
The lever assembly (head palte [14]) is pulled by the
tension spring (89) and moves forward (@).
Through the forward movement of the lever as-
sembly (head plate [14]), pinch roller assemblies
(R & F (64, 65]) make close contact with the
shaft of the flywheel assembly (R[8]) through the
formed wire (101) (@).

KRC-363D/L
MECHANISM OPERATION DESCRIPTION
13. The rotation is transmitted from each gear (52
— 54 — 55) to the gear assembly (reel base [50])
of the take-up side (@).
14. The gear assembly (reel base [50]) of the pay-
out side is pushed toward the slider assembly
(12) by the lever (33) and the gear (take-up [55})
is disengaged in the direction of the arrow (@).
PROGRAM
1.
Push
both
levers
(FR
[40]
and
FR
[41])
by
hand
at
the
same
time
(@).
2.
The
calking
of
the
lever
assembly
(reverse
[16])
is
sandwiched
between
the
lever
(FR
[40])
and
the
lever
(FR
[41]),
and
pushes
the
lever
assem-
bly
(reverse
[16])
(@).
3. The lever assembly (reverse [16]) moves the arm
(36) (@).
4. The arm (36) releases the lock of the gear assem-
bly (switch [53]) (@).
5.
The
torsion
coil
spring
(83)
pushes
the
cam
of
the
gear
assembly
(switch
[53])
in
the
direction
of
the
arrow
(@).
6. The gear assembly (switch [53]) is pushed by the
torsion coil spring (83), turns in the direction of
the arrow, engages in the gear assembly (take-
up [52]), and makes a half-turn (@).
7.
The
arm
(35)
functions
as
a
stop
temporarily
at
this
time;
the
stop
is
released
when
the
reverse
lever
returns
(@).
8.
The
muting
during
the
program
is
done
by
the
leaf
switch
S3
mounted
on
the
lever
assembly
(side
panel
[39])
(@).
10

KRC-363D/L
MECHANISM
OPERATION
DESCRIPTION
FROM FWD PLAY TO RVS PLAY
9.
10.
12.
13.
the gear assembly (switch [53]) moves the arm
(24) from the FWD PLAY position to the RVS
O. position through the movement of its boss
(@).
Through the movement of the arm (24), the slide
switch S2 is switched by the formed wire spring
(100) (@).
. The arm (24) moves the lever (33). The lever on
it
(34)
moves
at
the
same
time
through
the
dowel
on
the
lever
(33)
(@).
The lever (33) moves the arm (23) (@).
Through the formed wire (PR [101]) of the arm
(23), the pinchroller assembly (R [64]} contacts
the shaft of the flywheel assembly (R [8}), and
the pinch roller assembly (F [65]) is detached
from the shaft of the flywheel assembly (F [7})
(®).
14. Through the movement of the lever (33) in the
direction of the arrow (@), the gear (take-up [55])
attached to the slider assembly (11) is pushed
by the lever (33), and the rotation is removed
from the gear (take-up [54]).
Through the movement of the lever (33) in the
direction of the arrow (@), the gear (take-up [55))
attached to the slider assembly (11) is pulled by
the tension spring (76), engages with the gear
(take-up [54]), and the rotation is transmitted
from the gear assembly (52—-54-55-
50) (@).
11

KRC-363D/L
MECHANISM
OPERATION
DESCRIPTION
12
FROM RVS PLAY TO FWD PLAY
9.
10.
11.
12.
13.
The gear assembly (switch [53]) moves the arm
(24) from the FWD PLAY position to the RVS
oe. position through the movement of its boss
(©).
Through the movement of the arm (24), the slide
switch S2 is switched by the formed wire spring
{100) (@).
The arm (24) moves the lever (34). The lever un-
der it (33) moves at the same time through the
dowel or the lever (34) (@).
The lever (34) moves the arm (23) (@).
Through the formed wire spring (PR [101]) of the
arm (23), the pinchroller assembly (F [65]) con-
tacts the shaft of the flywheel assembly (F [7]),
and the pinch roller assembly (R [64]) is detached
io the shaft of the flywheel assembly (R [8])
(®@).
Through
the
movement
of
the
lever
(33)
in
the
direction
of
the
arrow
(@),
the
gear
(take
up
[55])
attached
to
the
slider
assembly
(11)
is
pushed
by
the
lever
(33),
and
the
rotation
is
removed
from
the
gear
(take-up
[54]).
Through
the
movement
of
the
lever
(33)
in
the
direction
of
the
arrow
(@),
the
gear
(take-up
[55})
attached
to
the
slider
assembly
(11)
is
pulled
by
the
tension
spring
(76),
engages
with
the
gear
(take
up
[54]),
and
the
rotation
is
transmitted
from
the
gear
assembly
(52->54>55—>
50) (@).

KRC-363D/L
MECHANISM OPERATION DESCRIPTION
Push the lever (FR [41}) (@).
Pushing the lever (FR [41]) makes the leaf switch
$3 turn on and muting is applied (@).
The lever (FR [41]) is locked by the arm (FR
release [25]) (@).
By pushing the lever (FR [41]), the lever (FR cam
{22]) is pushed in the direction of the arrow (@).
5. Through being pushed, the lever (FR cam [22])
moves the lever assembly (head plate [14]) back-
ward a little. Through the backward movement
of the lever assembly (head plate [14]), the play-
io, head (150) also moves backward a little
(®).
Po Qe nS
6. The arm (23) is slightly at an angle to the lever
(34); however, through the backward movement
of the lever assembly (head plate [14]), the arm
(23) moves backward, its dowel being guided by
the slot in the mechanism chassis (801) (@).
7. By moving the arm (23) backward, the pinch
rolier assembly (R [64]) and the pinch roller as-
sembly (F [65]) move backward from the shafts
on the flywheel assembly (F [7]) and the flywheel
assembly (R [8}) through a formed wire spring
(101) (@).
8. Through the backward movement of the dowel
on the arm (23), the lever (34) moves in the direc-
tion of the arrow (@).
9. The gear (take-up [55]) attached to the slider as-
sembly (B [12]) disengages from the gear (take-
up [54]), and the take-up torque is removed (@).
13

KRC-363D/L
MECHANISM
OPERATION
DESCRIPTION
10. Meanwhile, through pushing the lever (FR [41]},
the calking lever attached to the lever assembly
‘e panel [39]) is pushed by the lever (FR {41])
(@).
11.
Through
pushing
the
calking
lever,
the
lever
(FR
cam
[20])
moves
forward
(@).
12.
Through
the
forward
movement
of
the
lever
(FR
cam
[20])
the
torsion
coil
spring
(84)
and
the
lever
(FR
cam
[21])turn
in
the
direction
of
the
ar-
row
(@).
13. Through the turning of the lever (FR cam [21]),
the gear assembly (FR gear [51]) attached to the
lever assembly (FR [13]) engages with the gear
of the flywheel assembly (F [7]) and turns the
gear of the gear assembly (FR gear) in the direc-
tion of the arrow (@).
14, Pes FF, slightly depress the lever (FR [40])
(@).
15. By depressin the lever (FR [40]), the arm (FR
release [25]) moves, and the lever (FR [41])
re by the tension of the tension spring (86)
(@).
16. Inthe operation of T.ADV, electricity is supplied
to the solenoid (152), which attracts the arm (FR
release [25]). The lock on the arm (FR release
{25]) is released, FF is released and FWD PLAY
is engaged (@).
14

REW
KRC-363D/L
MECHANISM OPERATION DESCRIPTION
Push the lever (FR [40]) (@).
Pushing the lever (FR [40]) closes the leaf switch
$3 and muting is applied (@).
The lever (FR [40]) is locke by the arm (FR release
[25]) (@).
By pushing the lever (FR [40]), the lever (FR cam
{22]) is pushed in the direction of the arrow (@).
Through being pushed, the lever (FR cam [22])
moves the lever assembly (head plate [14]) back-
ward a little. Through the backward movement
of the lever assembly (head plate [14]), the play-
back head (150) also moves backward a little
(@).
. The arm (23) is slightly at an angle to the lever
(34); however, through the backward movement
of the lever assembly (head plate [14]), the arm
(23) moves backward, its dowel being guided by
the slot in the mechanism chassis (801) (@).
. Through the backward movement of the arm
(23), the pinch roller assembly (F [7]) and the
pinch roller assembly (R {8]) move backward
from the shafts of the flywheel assembly (F [7])
and the flywheel assembly (R [8]) (@).
. Through the backward movement of the dowel
on the arm (23), the lever (34) moves in the direc-
tion of the arrow (@).
. The gear (take-up [55]) attached to the slider as-
sembly (A [11]) disengages from the gear (take-
up [54]), and the take-up torque is removed (@).
15

BKRC-363D/L
MECHANISM OPERATION DESCRIPTION
10. Meanwhile, through pushing the lever (FR [40]),
the calking lever attached to the lever assembly
(side panel [39]) is pushed by the lever (FR [40]}
(@).
11.
By
pushing
the
calking
lever,
the
lever
(FR
cam
[20])
moves
backward
(@).
12. By the backward movement of the lever (FR cam
{20]), the torsion coil spring (84) and the lever
‘e cam [21]) turn in the direction of the arrow
(‘@).
13. Through the turning of the lever (FR cam [21]),
the gear assembly (FR gear [51]) attached to the
lever assembly (FR [13]) engages with the gear
of the fly wheel assembly (R [8]) and turns the
gear of the gear assembly (FR gear [51]) in the
direction of the arrow (@).
14.
To
release
REW,
slightly
depress
the
lever
(FR
[41])
(@).
15.
By
depressing
the
lever
(FR
[41]),
the
arm
(FR
release
[25])
moves,
and
the
lever
(FR
[40])
i.
by
the
tension
of
the
tension
spring
(86)
(@).
16.
Inthe
operation
of
T.ADV,
electricity
is
supplied
to
the
solenoid
(152),
which
attracts
the
arm
(FR
release
[25]).
The
lock
on
the
arm
(FR
release
{25])
is
released,
REW
is
released,
and
RVS
PLAY
is
engaged
(@).
16

KRC-363D/L
MECHANISM OPERATION DESCRIPTION
AUTO REVERSE
1.
PF Ww
or
During
FWD
PLAY,
when
the
rotation
of
the
gear
assembly
(reel
base
[50])
of
the
take-up
side
stops
at
the
end
of
the
tape,
the
lower
lever
(sen-
o
[38])
stops
pushing
the
lever
(sensor
[28])
(@).
The operation for RVS PLAY is the same as that
for FWD PLAY (@).
These end sensors on the take-up side stop push-
ing the end sensor lever (@).
The lever (sensor [37]) moves forward, riding on
the cam of the gear (switch [59]) (@).
Through the forward movement of the lever (sen-
sor [37]), its boss pushes the arm (36) (@).
The
arm
(36)
releases
the
lock
of
the
gear
(switch
[53]), the gear assembly (switch [53]) is pushed
by
-
he
torsion
coil
spring
(83),
and
engages
with
gear
assembly
(take-up
[52])
(@).
. The gear (switch [53]) makes a half-turn, and
operates the program (@).
At the tape end during the operation of FF or
FWD, the end sensor is activated, and the arm
(24) moves the lever (reverse [16]) during the
program operation (@).
The level (FR [41}) and the lever (FR [40]) are
released (@).
bi The rotation of the gear assembly (reel base
[50]) resets the lever (sensor [37]). The
cam of the gear (switch [49]) pushes the
lever (sensor [37]) to set it. After a half-turn
of the cam of the gear assembly (switch
[59]), the lever (sensor [37]) moves
forward.
ecm
17

KRC-363D/L
MECHANISM OPERATION DESCRIPTION
EJECT
1. Push the lever assembly (eject [15]) (@).
2. By pushing the lever assembly (eject [15]), the
torsion coil spring (95) pushes the lever (49) (@).
3. Through pushing the lever (49), the slide switch
$1 is turned off, and the lever assembly (head
plate [14]) moves backward in the KEY OFF oper-
ation (®).
4. The lever assembly (eject [15]) pushes and turns
the arm (action [27]) (@).
5. By turning, the arm (action) pushes up the holder
(action plate [110]) (@).
6. When the holder (action plate[110}) is pushed up,
the lever (reverse [42]) is pulled by the tension
spring (75) and turns (@).
7. In turning, the lever (reverse [42]) is put on the
lever of the mechanism chassis (801) (@).
8. The cassette guide (118) is pushed forward by
the torsion coil spring (85) , and the cassette tape
is ejected (@).
18

INPUT OUTPUT TUNER ALIGNMENT
ITEM SETTINGS SETTINGS SETTINGS POINTS ALIGN FOR FIG.
(A) Connect
98. LMHz an oscilloscope Fi
1kHzt40kHz dev to pins 7 and 13 98. 1MHz IFT301 ov (a)
60dBuCANT input) of 1C301(DC 50a¥).
(A) ()
98. 1MHz Connect
2 SOFT MUTE RATIO 1kHz+40kHz dev an AC Voltmeter
Fi
98. MHz
Fi
98. 1MHz
DISCRIMENATOR
Difference between
60dBu input and
20dBu input levels: 25dB
60dBuCANT input) to SP output.
(A) Connect a DC
98. LMHz Voltmeter between
1kHz+40kHz dev pin 4 of 10802
20dBuCANT input) |CTC4069UBP) and GND.
(B) ()
98. 1MHz Connect
1kHzt40kHz dev an AC Voltmeter
Pilot: +6kHz dev to SP output.
Selector: L or R (Reference
60dBu(ANT input) level: 2¥/42)
(8) (D)
98. IMHiz Connect
1kHzt40kHz dev an AC Voltaeter
Pilot: t6kHz dev to SP output.
Selector: L or R (Reference
35dBu(ANT input) level: 2¥/40)
Point at which DC 4.5V
changes to 0V
AUTO STOP
LEVEL
‘ SEPARATION
(E)
98, 1MHz Connect
0
aod
the
AC
voltmeter
Fil
L901
DK LEVEL SK 5.33% to TP1. 98. 1MHz ¥R901 Maximum output
DK 30% BK 60% SDK: OFF
60dBuCANT input)
(2)
98, 1MHz
\kHzt40kHz dev Fi
7 SDK VOLUME SK 5.33% 98. 1MHz VR95! 400aY
LEVEL DK 30% BK 60% VOLUME: 0
60dBuCAMT input)
MW SECTION Note 1: If the sensitivity is too low to make adjustments, increase the ANT input as required.
Make adjustments at an input level at which the AGC does not operate.
Connect a DC
Voltmeter between
(1) BAND EDGE the VT terminal of L8
(Cc)
531kHz (D)
(2) 400Hz 30% MOD Connect an AC IFT
5
30dBuCANT
input)
VYoltaeter
Sr
;
Note 1 to SP output.
()
603kHz @)
(3) | BF ALIGNMENTC1) 400Hz 30% MOD Connect an AC 603kHz L Waxiaua output
30dBuCANT input) Yoltaeter Li
Note 1 to SP output.
j
|
the AM tuner unit
(pin 3) and GND.
4
6
(Cc)
1530kHz (D)
RF ALIGNMENT(2) 400Hz 30% MOD Connect an AC TC3 Maxiaum output
30dBuCANT input) Voltmeter
Note 1 to SP output.
ee ea
()
999kHz
400Hz 30% MOD
32dBuCANT input)
Connect a DC
Voltmeter between
pin 4 of 1€802
CTC4069UBP)and GND.
Point at which DC 4.5¥
changes to 0V
AUTO STOP
LEVEL
19

KRC-363D/L
(A)
(B)
(Cc)
(E)
20
Connect a DC
Voltmeter betwen
the YT terminal of
the AM tuner unit
(pin 3) and GND.
Connect an AC
Voltmeter
to SP output.
INPUT OUTPUT TUNER ALIGNMENT
ITEM
SETTINGS
SETTINGS
SETTINGS
POINTS
ALIGN
FOR
400Hz 30% MOD
with the head demagnetizer.
ae Le
(c)
<2>
RF
ALIGNMENT
LS
Maximum
output
30dBuCANT input) L7
Note 1
Demagnetize
Clean the recording head,
revase head, capstan, and
220kHz
CASSETTE DECK SECTION
the recording head
Pinch roller with alcohol.
DEMAGNET IZATION
AND CLEANING
Recording head
Capstan
Pinch roller
MTT-256
10kHz. -20dB
Aziauth
adjustment screw
Adjust the aziauth
adjustment screw so that
maximum output is obtained.
[2] AZIMUTH
FM FRONTEND
AM TUNER
t ONLY °L5,7,9
KRC-363 D/L