Sharp CDK-455-Z, CPK-455-Z Service manual
CD-K4
CP-K4
SHARP
---------------------------------~S92Il'1GDK:455Z1
SERVICE MANUAL
Speaker Unit CP-K455Zisnot included with this productinthe Philippines.
•Inthe
I
interestsofuser-safety
condition
and
only
parts
illJD~@
DIGITAL
AUDIO
CD-K455Z
CP-K455Z
the
set
identicaltothose
shouldberestored
specifiedbeused.
to
its
original
INDEX TO CONTENTS
Page
SPECIFICATIONS 2
VOLTAGE SELECTION 2
NAMES OF PARTS 3-5
DiSASSEMBLy
REMOVING AND REINSTALLING THE MAIN PARTS 8-10
BLOCK DIAGRAM 11-13
NOTES
ADJUSTMENT 15-18
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD
WAVEFORMS OF CD CIRCUIT
TROUBLESHOOTING (CD SECTION) 43-47
FUNCTION TABLE OF
LCD SEGMENT
EXPLODED VIEW 56-59
REPLACEMENT PARTS LIST 60-72
ON
SCHEMATIC DIAGRAM/TYPES OF TRANSISTOR AND LED
IC
'"
6,
14
19-41
42
48-55
55
7
SHARP CORPORATION
-K455Z
-K455Z
FOR A COMPLETE DESCRIPTION OF THE OPERATION
TO
THE
CD-K455Z
• Mini component system
• General
AG
Power
source:
Power consumption:
Dimensions:
Weight:
• Amplifier section
Output power:
Output terminals:
Input terminals:
• Tuner section
Frequency range:
110/127/220/230-240
50/60
400
Width;
Height;
Depth; 347
9.1kg(20.0
PMPO;
MPO;
(10
% T.H.D. 1
RMS;
(10
% T.H.D. 1
Speakers;8ohms
Headphones;
(recommended;32ohms)
AUX;
MIG
FM;88(50/
SW2;
SW1;
MW;
(9
kHz
MW;
(10
kHz
OPERATION MANUAL.
Hz
W
270
mm
316
1,000 W (totai)
250
160 W
245
1/2;
100
9.50 - 21.85 MHz
3.20 - 7.30 MHz
531
span)
530
(10-5/6")
mm
(12-7/16")
mm
(13-11/16")
Ibs.)
W (125 W +
kHz,8ohms)
(80
kHz,8ohms)
16-50
mVl47
1 mVl4.7
108
MHz
kHz
span)
- 1,602
- 1,620
span)
V,
125
W +80W)
ohms
kohms
kohms
kHz
kHz
SPECIFICATIONS
• Cassette deck section
Tape:
Bia.s
and erasure
system:
Tape speed:
Heads:
Motor: DC
SIN
ratio:
Wow and flutter: 0.15 %
• Compact disc player section
Type:
Signal readout:
W)
Error correction:
Audio channels:
Decoder:
Filter:
Frequency response:
Wow and flutter:
CP-K455Z
• Speaker system
Type:
Maximum input
power:
Impedance:
Dimensions:
Weight:
OF
THIS UNIT, PLEASE REFER
Compact
AG
4.76 em/sec (1-7/8 ips.)
TAPE-l: Playback x 1
TAPE-2: Record/playback x 1
50
Compact
Non-contact,
conductor
eIRe
Solomon
2
16-bit
2~tjmes
and
20
Unmeasurable
(less
2-way 16
and5em
130
8
Width;
Height;
Depth;
4.6
cassette
Erase
motor
x 1
dB
(WRMS)
disc
laser
(Cross
Code)
linear
oversampling
active
filter
- 20,000
than
0.001%W.
em
(2")
W
ohms
180mm(7-3/32")
316
276.5
kg
(10.2 Ibs.)/each
3-beam
quantization
Hz
mm
tape
x 1
player
semi-
pickup
Interleave
(6-5/16") wooler
tweeter
mm
Reed~
digital
peak)
type
(12-7116")
(10-7/8")
(
\
(
filter
(
Specifications
notice.
VOLTAGE SELECTION
The
voltage selector is located on the AC voltage selector box.
If adjustment is necessary, use a
seleclor
displayed in the window next to the adjustmenl screw.
92LG6RD·1318B
92LC6RD·1393A 92LPLUG155A
in
either direction untii the correct voltage figure is
screwdriver in order to turn the
92LPLUG027
Figure 2 AC POWER SUPPLY CORD AND PLUG
lor
this modelaresubject10change without prior
o
o
!
-2-
CD-K455Z
•
Tuner
control
1.
Preset Channel Indicator
2.
Band Indicators
3.
Station Frequency
4.
FM Stereo Indicator:
5.FMStereo Mode Indicator
6.
Memory Indicator
7.
Auto Scan
8.
Preset Channel Up/Down Buttons: v / A
9.
Band Selector Button
10.
FM
Mode Button
11.
Auto ScanlManual Tuning Selector Button
12.
Tuning UplDown Buttons
13.
Memory Button
section
CD
Indicator
NAMES OF PARTS
in
CUCH-
cpl[fffiQlf
I \ 1 I
4 5 6 7
[I'--
VII
Ivl"
"~~.
'Ina
IU
nn
.UUMHz
I,
+-_~
t
I
(v::>
CD-K455Z
CP-K455Z
""
•
CD
control
14.
Play Indicator:
15. Track Number Indicator
16.
Minutes and 'Seconds Indicator
17.
Pause Indicator:
18.
Repeat Indicator: c
19.
Programme Indicator
20.
Memory Indicator
21.
Stop Button: •
22.
Open/Close Button:
23.
Play Button:
24.
Pause Button:
25.
Remote Control Sensor
26.
Disc Table
27.
Track Up/Down Bullons:
section
~
II
~
~
II
i+lI/
~
11
12 13
14 15 16
/ I
21
222324
~
-3-
25 26
27
CD-K455Z
CP-K455Z
•
Amplifier
1. Power Switch
2. Stand-By Indicator
3. Extra Bass Switch and Indicator: X-BASS
4. Volume Control
5.
Balance Control
6. Graphic Equalizer Controls
7.
Microphone Sockets
8.
Function Selector Buttons and Indicators
9. Karaoke Maker Switch
10.
Microphone Level Controls
11. Digital Echo Control
12. Tape Selector Switch
13.
Dubbing Speed Switch
section
1 2 3 4
7 8 9 10
5 6
11
(
12 13
•
14.
15.
16.
Stereo
double
TAPE2)Casselle Compartment
Headphones Socket
TAPE 1) Casselle Compartment
cassette
TAPE 2
17.
Record BUllon: •
18.
Play Bullon:
19.
Rewind
20. Fast Forward
21. Stop/Eject
22. Psuse BUllon:
~
Bullon:
Bullon:
...
Bullon:
II/;!;
II
TAPE 1
23.
Play Bullon:
24.
Rewind
25.
Fast Forwsrd
26.
Stop/Eject
27.
Pause Button:
~
Button:
Bullon:
........
Bullon:
II/;!;
II
_
_
deck
seclion
TAPE 2
'-------~
14
15 16
I I TAPE 1
(
(
(
•
Rear
panel
28. MW/SW1/SW2 Aerial Terminal
29. MW/SW1/SW2 Aerial Earth Terminal
30,FM75
31. Span Selector Switch
32. Beat Cancel
33. Auxiliary Input Sockets
34.
35. Speeker Terminels
36.
ohms Aerial Socket
AC
Voltage Selector
AC
Power Lead
Switch
-4-
o~oooooooooooooooooooo
0000000
uoo~ooooooooo
34---tH~
[[]
35
36
ooooooooo~oooooooooooo
0000000000000
0000000
28
1lIl-IH-29
30
31
32
33
(
CD-K455Z
CP-K455Z
• Namesofcontrols
1.
Remote Control Transmitter Window
• Tuner control buttons
2~
Band Selector Buttons
3.
Preset Channel
•
CD
control buttons
4.
Repeat Bullon: c
5.
Call
Bullon
6.
Memory
7.
Pause Bullon:
8.
Stop/Clear Bullon: •
9.
Play Bullon:
10.
Track
11.
Track DownJReview Button:
• System Control Buttons
12.
Function Selector Buttons
13.
Power Button
14.
Extra Bass Bullon :
15. Volume UpJDown Buttons: v I A
•
Proper
Bullon
Up/Cue
useofthe
UplDown
1\
~
Bullon: _
Bullons: v / A
I'ttolIlI
X-BASS
remote
control
IT
CD 6
LL
12
13
14
1
21
3
Tuner
tI
10 CD
CJ
c:5
iiJ
15
Aim the remote control at the remote control sensor within
60°, with
Notes concerning use:
• Replace the batteriesifcontrol distance decreases or
• Periodically clean the transmitter window on the remote
• Exposing the sensor
• Keep the remote control away from moisture, excessive
• The remote control's usable rangeisbetween 0.2 m (8")
• Speaker section
1. Tweeter
2. Woofer
3. Speaker Terminals
no obstacles, and operate as shown.
operation becomes erratic.
control and the sensor on the main unit with a soft cloth.
on
interfere
tion of the unit.
heat, shock, and vibrations.
and 6 m (20') away from the sensor.
with
operation. Change the lighting or the direc-
the main unit to strong light can
I
..
0
I~
0
iim
00
=
@Jf--I+3
-5-
2
o
CD-K455Z
CP-K455Z
DISASSEMBLY
CautiononDisassembly
Follow the below-mentioned notes when disassembling the
unit and reassembling it, to keep its safety and excellent
pertormance~
1. Take cassette tape and compact disc out of the unit.
2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit.
or
3. Take off nylon bands
wire holders where they need be
removed when disassembling the unit. After servicing the
unit, besure to rearrange the leadswhere theywere before
disassembling.
4. Takesufficientcare on staticelectricityofintegratedcircuits
and other circuits when servicing.
CD-K455Z
STEP
I
2 Side Panel
3 Rear Board
4
5 Disc Holder
REMOVAL
Top Cabinet 1.
CDPWB
PROCEDURE
Screw
2.
1.
1.
I.
2.
1.
.....................(AI )x4
Hook
.......................(A2)x2
Screw .....................(BI )x8 8·1
Screw .....................
Socket ....................
Screw
.....................(D2)x4
Turn the loading
pulley in
the arrow
the
with
(CI
(DI
motor
direction
a Phillips or
)x7
)x8
of
FIGURE
6-1
8-1
6-2
6-2
slotted screwdriver and
extract the disc holder.
2.
Hook
.......................
CD
6
7 Front Panel
8 Main PWB
9
10 PowerPWB 1. Screw .....................
11
12 Volume PWB 1. Knob ......................
13
14
Mechanism
Trans PWB
Tape
Mechanism
SwitchPWB
LCD PWB
I.
Screw
.....................
Screw
1.
2. Bracket ...................
3. Socket ..................
4.
5. Push Rive!.. ............ (G5)x1
I.
2.
1.Socket
2.
1.
2.
2. Nut .........................
3.
4.
1. Screw ..................... (N1)x2
2. Bracket ...................
1. Screw ...................
.....................
Screw
.....................(G4)x3
Socket .................... (HI
Screw
.....................(H2)x3
.....................
Screw
......................(J2)x4
Open
the cassette holder
Screw
......................(LI )x7
Washer
..................(M3)x1
Socket.................... (M4)x1
(EI)x2
(FI
)x4
(GI)x2
(G2)xI
(G3)xl1
)xl
(JI)x2
(KI)x7
(MI
)xl
(M2)xI
(N2)xl
(PI
)x'
6-2
7-1
7-2
7-2
7-3
7·4
7-4
7·4
7-4
2
CD-K455Z
1
W:
)X2
4x8mm
Black
(F1)x4
i63x12mm
Loading
Molor
Pulley
If:'l''
3x10mm
Black
it'l',
Black
Top
Cabinsl
t
'I
"W'"
W3X10mm
Black
(D2}x4
~3xBmm
4 x12mm
1f:'1<5
Black
1
3x
lOmm
Figure
6-1
Rear
Board
(D1)x5
(A2)x2
1
W
)X2
4x8mm
Black
Sida
Panel
(D1)x3
(
(
CP-K455Z
STEP
I
2 Wooferrrweeter
REMOVAL
Front
Panel
1.
Remove the
2.
Rubber
3.
Screw
I.
Screw
PROCEDURE
net.
Holder........
.....................(A2)x4
.....................
(AI)x4
(BI)x6
FIGURE
7-5
7-6
-6-
Figure
6-2
(
(G1)X2
f3x10mm
.--=~7'-"~-t--
---------------I------"'=--
CD-K455Z
CP-K455Z
(H2)
x2
tp3x
10mm
~
(H2) x 1
¢i3xBmm
CP-K455Z
(G4)x3
P3x10mm
Figure
Figure
No<
7-1
~3X10mm
7-3
(K1) x 2
(M1)x1 (M4)x1
~(M2)X1
f{JfI)4
(M3) x 1
Tape
Mechanism
Figure 7-2
LCDPWB
Figure 7-4
(L1) x 5
13 x
10mm
(B1)x4
914x12mm
Black
(N1) x 1
.p3x
10mm
(B1)x2
913.5x10mm
Black
(N2)
(L1)x2
13 x
16mm
(P1)x2
.p3x12mm
Black
x1
(N1) x1
13x
10mm
(A2)x4
i63.5x12mm
Figure 7-5
Figure 7-6
-7-
CD-K455Z
CP-K455Z
REMOVING AND REINSTALLlNG THE MAIN PARTS
TAPE MECHANISM SECTION
Perform steps
to remove the tape mechanism.
How
erase heads (TAPE 2) (See Fig. 8-1.)
1.
Press the PLAY button to lift the head.
2. Remove the 2 screws (A1) to remove the record/playback
head.
3. Remove the 2 screws (A2) to remove the erase head.
Note:
Afterreplacing theheadsandcompletingtheazimuthadjustment,
be sure to apply screwlock.
Howtoremove the playback head (TAPE 1)
(See Fig. 8-2.)
1.
Press the PLAY button to lift the head.
2.
Remove the 2 screws (81) to remove the playback head.
to
remove
1,2,3,4,5,6,7
the
and11ofthe disassembly method
record I playback and
(A2)x2
If>
2x8mm
(A
1 )
rp2x7mm
Figure
xl
(
(A1)xl
';2x3mm
TAPE 2 I
Record/Playback
Head
8-1
TAPE 1 I
Note:
Afterreplacing the head and completing the azimuth adjustment,
be sure to apply screwlock.
Howtoremove the pinch roller (TAPE 1/2)
(See Fig. 8-3.)
1.
Carefully bend the pinch roller pawlinthe direction of the
arrow
® , and remove the pinch roller
Howtoremove
the
belt (TAPE 2)
(Cl)
upwards.
(See Fig. 8-4.)
1.
Remove the main belt (01) from the motor side.
2. Remove the FF/REW belt (02).
Pawl
[TAPE}]
(E
2)
FFIREW Selt
Figure 8-2
TAPE
t
Figure 8·3
Figure7-3
Motor
1/2
(C
Pinch Roller
(
1)
(
I TAPE 2
Howtoremove the belt (TAPE1)
(See Fig. 8-4.)
1.
Remove the tape 2 main belt (01) from the motor side.
2. Remove the tape 1 main belt
3. Remove the FF/REW belt (E2).
(El)
from the motorside.
-8-
Flywheel
(E
1)
Main Belt
(D
1)
Main Belt
Figure 8-4
Flywheel
. CD-K455Z ' CD-K455Z
CP-K455Z CP-K455Z
How to remove the flywheel (TAPE 2)
(See Fig. 9-1.)
1.
Remove the belt.
2. Remove the screw (F1) to remove the pause kick lever.
3. Remove the stop washer (F2) with a small precision
screwdriver.
4.
Remove the washer (F3) upwards and extract the flywheel
from the capstan metal.
Note:
When the stop washer
nswans.
is
deformed or damaged, replace itwith a
How to remove the flywheel (TAPE 1)
(See Fig. 9-2.)
1.
Remove the belt.
2. Remove the stop washer (G1) with a small precision
screwdriver.
3.
Remove the washer (G2) upwards and extract the flywheel
from the capstan metal.
Note:
When the stop washer is deformed or damaged, replace It with a
newans.
o
Flywheel
I TAPE 1 I
(G
1)
Stop
Was:;h::e:-r
(G
2)
Washer
)
7
Flywheel
I
TAPE
2 I
Figure
----ll~
__
Ewasher
9-1
CD MECHANISM SECTION
Perform steps
the CD mechanism.
Removing the pickup (See Fig. 10.)
1.
Remove 4 screws (J1) and remove 2 shafts (J2).
Ewasher
"-
Flywheel
1
,
1,4,5
andSofthe disassemblymethod to remove
(J1)
x2
02.6
x 4.5mm
Turntable
~~~~S=-
Figure
10
Pickup
(J1) x 2
02.6
x4.5mm
(J2) x 2
How to remove the motor (See Fig. 9-3.)
1.
Remove the belt.
2. Removethe 6 screws (H1) to removethe tape 1mechanism.
3. Remove the 3 screws (H2) to remove the motor.
(H
Ilx4
¢2x4mm
Figure 9-3
I
,
I
\..,
-?~
.-
r'"
Figure 9-2
How to reinstall the parts
Install each partinthe reverse order of the removal with care.
pP,
/
-9-
-10-
KEY
MATRIX
CD-K455Z CD-K455Z
CP-K455Z CP-K455Z
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REGULATOR REGULATOR
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S~;~~~~Y
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e~~
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SW901
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220V
_~::~
RXSQI
REMOTE
SENSOR
:)
1'90
[NO
AC
ftx
I
110/127/
22lJ/230-240V
SO/60Hz
i<:?
& R
GND
GND
SPIlAKI!RS
(
(
(
-11
Figure11BLOCK
DIAGRAM (1/2)
-12-
CD-K455Z CD-K455Z
CP-K455Z CP-K455Z
NOTES ON SCHEMATIC DIAGRAM
PICKUP
-------'F~f_-----
UNIT
*}I==='''''=::=WimD==:=~t~'b':==''ve,==:>{
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T~NGr---I--tJ.J~,v!===~=+~J~"v=~1
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M
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c-
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M'
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.......
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m
M
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MOTOR
IN
CA'"
DRIVER
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0102
DE-EMPHASIS
0105"
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1 R:DUT vee
8V
Pl:-JU
• Resistor:
To
differentiate the unitsofresistors, such symbolasK and
_~~OVIDI
CLOCK
"'
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02
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L. P. P
£.X~o"'",rq
10.
LC9600AM
D/A
CONVERTER
HV
+7.3V
,';----I~:~
TO
AUDIO
CO
SIGNAL
M are used: the symboi
--
--M
means 1000 kohm and the resIstor without any symbol
ohm-type resistor. Besides, the one with "Fusible" is a fuse
type.
• Capacitor:
To
indicate the unit of capacitor, a symbol
symbolPmeansmicro-micro-faradand theunit
without suchasymbolismicrofarad.Astoelectrolyticcapacitor,
the expression "capacitancelwithstand voltage" is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
• Theindicatedvoltage in each section is the
Digitai Multlmeter between such a section and the chassis
with no signal given.
REF.
NO
SW1
SW1MA
SW1MB
SW2
SW50M
SW201
SW401
SW402
SW403
SW404
SW405
SW406
SW407
SW801
SW802
SW803
SW804
DESCRIPTION
PICKUP
TAPE
DUBBING
DISC
KARAOKE
SPAN
BEAT
TAPE1MOTOR
TAPE2MOTOR
TAPE1MUTING
TAPE2MUTING
TAPE2RECORD
APSS
BAND
FMMODE
TUNER
TUNER
K means 1000 ohm and the symboi
one
POSITION
IN
SELECTOR
SPEED
HOLDER
MAKER
SELECTOR
CANCEL
DOWN
UP
OFF
NORMAL
NORMAL
CLOSE
ON
50/9
A
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Pis
used: this
olthe
capacitor
measured by
1.
Tuner:
():
MW/SW1/SW2 mode
():
IS
Marking except for
2.
CD
():
Play mode
Marking except for
3. Deck section
():
Record mode
Marking except for
DisplayI Control section:
( ):Active state
Marking except for
Schematic Diagram and Wiring Side of P
•
model are subject to change
notice.
•
Partsmarkedwith "
the safety of
specifiedones
the set.
REF.NO
SW805
SW806
SW807
SW808
SW809
SW810
SW811
SW812
SW813
SW814
SW851
SW852
SW853
SW854
SW855
SW856
SW901
the
set. Be sure to replace these parts with
for
maintaining the safety and performance of
DESCRIPTION
AUTO/MANUAL
MEMORY
PRESET
PRESET
POWER
X-BASS
CD
TUNER
TAPE
AUX
OPEN/CLOSE
CD
PLAY
CD
STOP
CD
PAUSE
CD
UP(»I)
CD
DOWN(~)
VOLTAGE
FM mode
():
Stop state
():
Playback
():
CD Function
Lt,;'
(
DOWN
UP
SELECTOR
mode
mode
for
improvement without prior
I)
areimportantformaintaining
POSITION
OFF
OFF
OFF
OFF
STAND-BY
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF.
OFF
230-240V
':<
';
~QQr_'
at stop state
W.Board
:':;:,~_
lqtfl
:;-l:JI\/l~2
__
for
this
o
~-~
g/9
TO
LCD80l
~,~.",
,{
"
RES!!T
~
IC851
CD
CONTROL
MICROCOMPUTER
IX1619AP
+5
:;r
-"Itl-+<~'~:~~:~"===='~'
L~~~~-<"!:JI
L:'~'
:,t:.':~~~
":
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,+~:~
L,~~N!:J
I
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i
OLOCK
X851
J
MUTING
DRIVER
0106.0107
,I
irr
~~~~§~rg~
SR
WS
ES
8
K
8L
OR
L
SE
C
Y
Figure14TYPESOFTRANSISTOR
SW8SI_SW856
CD
OPERATION
K"
HV=BJ-
+5VIDI
-,v
-5VlDJ
09
=-e<=J-
08
VOLTAGE
REGULATOR
08.
09
Figure13BLOCK
{+"
HV
-,v
{-"
DIAGRAM
-13-
(212)
OTC114
2SA562
2S8562
2SC1740
DTC363
DTA144
DTA114
2SC380
OTC144
OTA114
YS
Y
C
SR
TS
ES
ES
0
ES
YS
2SA933
DTA144
DTC114
2SC2878
2SC2001
2SC2240
2SK246
2SC2001
2SC1740
2S0468
2SC2236
FRONT
VIEW
BCE
2S01764
2S81287
-14-
FRONT
VIEW
B C E
2SD2061
AND
~AONT
~ ~
'VIEW
~FAONT
~ ~
VIEW
~ ~
F
SLR54YY3F
LED
3N4HDN33
CD-K455Z CD-K455Z
CP-K455Z CP-K455Z
ADJUSTMENT
AS
for preparation for adjustment, adjusting method and
to
replacement of pickup refer
Service Manual "ADJUSTMENT PROCEDURES OF AUDIO
PRODUCTS".
MECHANISM SECTION
•
Driving
PLAY:
REVERSE
•
Torque
Play:
Reverse Play:
Fast Forward: TW-2231
Rewind:
• Head
MIT-114
•
Tape
High
speed*
Normal
speed
, Short1pin of Q404 and Spin of Q404 when performing the high
speed adjustment.
Force
Torque Meter
TW-2412
PLAY:
Check
Torque Meter
TW-2111
TW-2231
Azimuth
Test
Speed
Test Tape
MIT-111
MIT-Ill
Check
TW-2422
TW~2121
Tape
Adjusting
Point
VR402
VR403
TAPE SECTION
Position of each switch or control
Volume
Graphic
Function
Beat cancel
Tape
Dubbing
Span
•
L411
•
MIT-118
Equalizer
selector
speed
selector
Bias
Frequency
Adjusting Point Specified Value
100
CANCEL
Playback
Test
Amplifier
Tape
Sensitivity
Specified Value
8.8
V± 3
the relevant explanation in
Specified Value
Tape 1
Over
50 9 Over 100 9
Over50g
Specified Value
Tape 1
30 to 60 g.cm
30to60
55to120
55to120
Speaker
(Load resistance: 8
kHz
(BEAT
Swilch:A)
dB
g.cm
g.cm
g.cm
Instrument Connection
Terminal
Specified
Value
8,000
±
100
Hz
3,000
±60
Hz
Max
Center
Tape
A
Normal
Normal
50/9
kHz
EmitterofQ421
Check
Speaker
(Load resistance:
8
Tape
Over 100 9
Tape
30to60
30to60
80to135
80to135
ohms)
Instrument
Cc;mnection
Speaker
Terminal
(Load
resistance:
8
ohms)
Instrument
Connection
Instrument
Connection
terminal
ohms)
2
2
g.cm
g.cm
g.cm
g.cm
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
• AM IF/RF
Signal generator: 400 Hz,
Span selector switch: 9 kHz
Test
Stage
IF
MWband
coverage
MW
tracking
SWI
band
coverage
SWI
tracking
SW2band
coverage
SW2
tracking
'1.
Input: Antenna
Output: Pin 15
FM
Notes:
1. Description of the "FM
Manual. It is because the IF coil in the FM front end section
has been best adjusted
adjustmentis not needed atthe field. When replacing the FM
front end assembly, no adjustment is needed either.
2. The parts in the FM frontend section arepreparedacomplete
unit, so you can't obtain each part individually.
• FM
Signal generator: 1 kHz, 40 kHz dev,FMmodulated
Frequency
98.00
(60
dB)
'Adjust
• FM
Signal generator: 1 kHz, 40 kHz dev, FM modulated
Frequency
98.00
(27
dB)
'Adjust
Frequency Frequency Specified
450
kHz
-
603
kHz
1,404
kHz
3.2
MHz
7.3
MHz
3.9
MHz
7.1
MHz
9.5
MHz
21.85
MHz
11.65
21.45
Detection/Distortion
Frequency
MHz
the T210 so that voltmeter reads 0 ± 50 mY.
Auto
MHz
so that an output signal appears.
Stop
98.00
Level
Frequency
98.00
MHz
MHz
of
IC202
Display
MHz
Display
MHz
SO%,
AM modulated
Display
1,602
kHz
531
kHz
603
kHz
1,404
kHz
3.2
MHz
7.3
MHz
3.9
MHz
7.1
MHz
9.5
MHz
21.85
MHz
11.65
MHz
21.45
MHz
'2.
'S. Input: Antenna
IF
Adjustmenf' is not carriedonthis
In
the factorysothat its further
T210'
VR202' Input: Antenna
Value/
Adjusting
Point
T209
T207(fL):
1.1
V±
0.05
V
T203(fL)
TC203(fH)
T206(fL):
2.1V+0.05V
TC206(fH);
7.7V+0.05V
T202(fL)
TC202(fH)
T205(fL)
2.1V+0.05 V
TC205(fH)
7.7V+0.05V
T201
(fL)
TC201(fH)
Input: Antenna
Oulpul: TP20S
Output: TP204
Adjusting
Point
Adjusting
Point
Instrument
Connection
'I
'2
'I
'3
'I
'3
'I
Instrument
Connection
Input:
Output:
Instrument
Connection
Oulput:
Speaker
termInal
Antenna
TP201
• VCO
98.00
(60
'AdjustforSBkHz ±100Hz
Frequency
Frequency
MHz
dB)
Specified
38
kHz±
Value
,---I....L-TcS;;;W;;;:2~T:;;R~Ar:C~KI;;;;N;:;G-V-,I--d-t::;
FE201
I.------,..L...,
SW1BAN
COVERAGE
L-
__
ITP204j/'~
I"""T=P2"""0-31
/
Ivcol
~
VR203
--JWv-
R294
__
Adjusting
VR203' Input:
100
Hz
fL
T2020@
L-_I'0o
T201
f_H
-,,-_
D L
fL
T206TC205
---.J
T2051§11@
fL
SW2BAND
COVERAGE
--JWv-
R246
FM
DISTORTION
I
TP202
Point
SW1
fL
fH
TC202
TC201
TC206
~@)
fH
513~
r:--=..,
DETECTIONI
I
Instrument
Connection
Antenna
Output:
TP202
TRACKING
fH
~
~
0
,-T2_0_7
----ySPAN
"
Bp:;ANGE~DAUX
I
T203
::tElL
TC203
__
MWBAND
COVERAGE
-,
L-J
--,
IL
SELECTOR
MW
IH
TRACKING
1
T209
0 I
TP201
I
10'2
~
AM
IF I
@I
VR202
o
FMAUTO
STOP
LEVEL
0404
I
NORMAL
1
HIGH
SPEED
SPEED
IMAIN PWB-A I
Figure16ADJUSTMENT POINTS
--------,
1
[]J
I
S
~
VR403@
1------.....
VR402'EB'
BIAS
L411
~
FREQ
B
©
E
0421
(
(
1
~
-15-
-16-
CD SECTION
paration
1. Pre
adjusting, be sure to refer to Service Manual "ADJUST-
When
PROCEDURESOFAUDIO PRODUCTS [Il]".
MENT
2. VCO Free-Run
Adjusting
Point
L1
3.
Servo
The procedure of adjustment differs from that stated in Service
Manual"ADJUSTMENTPROCEDURES OFAUDiOPRODUCTS
[II]"
.
Follow the procedure stated below.
o
Focus
Adjusting
Point
VR3
Unit
Offset
for
Adjustment
Frequency
Specified Value Instrument Connection
4.300
MHz±15
Specified Value
0±50mV
kHz
TP3
(VCO)
and
Instrument Connection
Pin1(FO)
GND.
ofTP2
GND.
and
CD-K455Z CD-K455Z
CP-K455Z CP-K455Z
o
Tracking
Adjusting Adjusting Method
Point
VR5
'2:
Applysinewave (Oscillation Frequency: 1.0 kHz 0.5Vrms) as
shown
o
Tracking
Adjusting Adjusting Method
Point
VR4
'3:
Short-circuit the test point Pin 4 (TS) of TP2 and GND.
Adjust so as to obtain symmetric waveform (Fig. 18-1) when
DC
o
CheckHFoutput
Adjusting
Point
--
Make sure that waveform is as shown in Fig. 18-2.
Gain
Adjustsothat
-vultage-otCH1is·"qoaJto
thatofCH-2.
in
Fig. 17-2.
Error
Balance
'3
is
OV.
Adjusting Method Instrument Connection
--
the
Instrument Connection
Pin5(TP)ofTP1,
-PiIT6tfE)-orTP1---
'2
and
GND.
Instrument Connection
Pin6(TE)
GND.
Pin3(HF)
GND.
ofTP1
ofTP1
and
and
'r----j-+-+-+-f-+-+----j-+--i
-
-[
DC=QV
•
Figure
18-1 TRACKING ERROR
BALANCE
More
1.
than
QVp-p
H-~~~~~~
Figure
18-2HFOUTPUT
1. 30~2. 0
Vp - p
ICD PWB-ci
o
Tracking
Adjusting Specified Value
Point
VR2
• Focus Gain
Adjusting Adjusting Method
Point
VRl
.
1: Applysinewave (OsCilialion Frequency: 1.0kHz0.5
shown in Fig. 17-1.
TP1
Pin2(FE~
R29
1k
TP1
Pin 1(FP
Offset
O±50mV
Adjustsothat
voltage of
to
thatofCH-2.
~-----------------------~
:
__
-i,""'"
0.0082
GND:
0.0082
3.3k
CH-1
100k
100k
100k
the
is equal
'1
Instrument Connection
Pin2(TO)ofTP2
GND.
.
Instrument Connection
Pin1(FP)ofTP1.
Pin2(FE)
GND.
,
~
~-'-00-k_--..,..----'
:
~._3~
FOCUS GAIN ADJ. JIG
~
ofTP1
SIGNAL
GENERATOR
1kHz
0.5Vnns
and
and
Vrms)as
TP1
Pin
6{TEl?--'-+Y
R4
470
TP1
Pin
5(TP)b--.....,
TP1
Pin
6(TE) 10k OSCILLOSCOPE
TP1
Pin
4(GND)
,
0.0082
,
GND:
0.0082
.....
:
,------------------------~
Figure
~---''{1fy-.....,.----+--o-,
100k
lOOk
I--<>--Wv-~----+--'
100k
1k
TRACKING GAIN ADJ. JIG
17-2 TRACKING GAIN
10001"
:
~
o--r----T=>---t=----.J
:_--------------------------------_:
TRACKING ERROR
ADJ.
BALANCE
JIG
SIGNAL
GENERATOR
1kHz
O.5Vnns
I
TP21
FO
2 TO
3 GND
4 TS
rn
I
TP11
TE 6
TP 5
GND 4
HF 3
FE
2
FP 1
TRACKING
GAIN
TRACKING
ERROR
BALANCE
VR2 VR3
VR1
@@@@@
VR5 VR4
Figure
17-1 FOCUS GAIN
-17-
Figure
17-3 TRACKING ERROR
BALANCE
Figure
18-3
ADJUSTMENT
POINTS
-18-
CD-K455Z CD-K455Z
+8
FM
SIGNAL
CP-K455Z CP-K455Z
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