JVC KD-S620 User manual

SERVICE MANUAL
CD RECEIVER
No.49581
Dec. 2000
COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.
KD-S570 / KD-S620
KD-S570 / KD-S620
Area Suffix
J ---- Northern America
Contents
Safety precaution
Location of main parts
Disassembly method
Adjustment method
Flow of functional operation until TOC read
Maintenance of laser pickup
Description of major ICs
1-2
1-3
1-4
1-9
1-10
1-12
1-13
This service manual is printed on 100% recycled paper.
COMPACT
DIGITAL AUDIO
KD-S620KD-S620
KD-S620
KD-S570KD-S570
KD-S570
31
Model
KD-S620
KD-S570
Remote
control unit

KD-S570/KD-S620
1-2
!Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.
Safety precaution
!Please use enough caution not to see the beam directly or touch it in case of an
adjustment or operation check.

KD-S570/KD-S620
1-3
Main unit
Location of main parts
Control unit
CD mechanism
Display LED & key control board
Main board
Tuner
pack
Main board Connector to controller
Power IC
ISO connector Antenna jack
Loading motor
Mechanism relay board
Damper
Optical pick up unit
Damper
Feed motor
Spindle motor

KD-S570/KD-S620
1-4
Disassembly method
Removing the front panel unit(See Fig.1)
1. Insert a screwdriver to the joints a on the side of the
front chassis and two joints b on the right side, then
detach the front chassis toward the front side.
1. Press the release switch and remove the front
panel unit in the direction of the arrow.
Removing the front chassis (See Fig.2)
Removing the heat sink (See Fig.3)
1. Remove the three screws A attaching the heat sink
on the left side of the body, and remove the heat
sink.
Removing the bottom cover (See Fig.4)
1.
2.
Turn the body upside down.
Insert a screwdriver to the two joints c and two
joints d on both sides of the body and the joint e on
the back of the body, then detach the bottom cover
from the body.
b
a
a
b
A
A
A
Heat sink
c
d
e
Fig.2
Fig.1
Fig. 3
Fig. 4
Regulator board
Front chassis

KD-S570/KD-S620
1-5
Removing the main amplifier board
(See Fig.5 and 6)
1.
2.
3.
4.
5.
Remove the front chassis.
Remove the bottom cover.
Remove the two screws B attaching the main
amplifier board assembly on the bottom of the body.
Remove the three screws C attaching the main
amplifier board assembly on the back of the body.
Disconnect connector CN501 on the main amplifier
board assembly from the CD mechanism assembly.
Removing the CD mechanism assembly
(See Fig.7)
1.
2.
3.
4.
Remove the front chassis.
Remove the bottom cover.
Remove the main amplifier board assembly.
Remove the three screws D attaching the CD
mechanism assembly from the top cover.
Removing the control switch board
(See Fig.8 and 9)
1.
2.
3.
Remove the front chassis.
Remove the four screws E attaching the rear cover
on the back of the front panel unit.
Remove the control switch board from the front
panel unit.
C
Fig.5
Fig. 6
B
B
C
C
CD mechanism assembly
D
DD
Top cover
Fig. 7
EE
EE
Fig. 8
Fig. 9
Control switch board
CN501
Main amplifier board

KD-S570/KD-S620
1-6
Unsolder the part f and g on the CD mechanism
control board.
Remove the stator fixing the CD mechanism control
board and the damper bracket (To remove the stator
smoothly, pick up the center part).
Remove the screw F attaching the CD mechanism
control board.
Remove the CD mechanism control board in the
direction of the arrow while releasing it from the two
damper bracket slots i and the front bracket slot j.
Disconnect the flexible wire from connector on the
pickup unit.
Removing the CD mechanism control
board(See Fig.1 and 2)
Turn the FD gear in the direction of the
arrow to move the entire pickup unit to
the appropriate position where the
flexible wire of the CD mechanism unit
can be disconnected easily (Refer to
Fig.2).
ATTENTION:
Fig.1
Fig.2
Fig.3
Fig.4
Front bracket
CD mechanism
control board
Shift the lock
Flexible wire
Pickup unit
FD gear
CD mechanism control board
Loading motor Front bracket
Front bracket Pull outward
Pull outward
Flame
Damper bracket
mm
h
i
g
f
II
I
CD mechanism ass’y
Fj
k
G
k
G

KD-S570/KD-S620
1-7
Prior to performing the following procedure, remove
the CD mechanism control board.
Remove the two springs k attaching the CD mechanism
ass’y and the front bracket.
Remove the two screws G and the front bracket
while pulling the flame outward.
Remove the belt and the screw H from the loading
motor.
Removing the loading motor
(See Fig.3 to 5)
Prior to performing the following procedure, remove
the CD mechanism control PWB and the front
bracket (loading motor).
Remove the three screws I and the damper bracket.
Raise the both sides fix arms and move the fix plates
in the direction of the arrow to place the four shafts l
as shown in Fig.8 and 9.
Remove the CD mechanism ass’y and the two
springs m attaching the flame.
Remove the two screws J and both sides rear
damper brackets from the dampers. Detach the CD
mechanism ass’y from the left side to the right side.
1.
2.
3.
4.
Removing the CD mechanism ass’y
(See Fig.1, 6 to 9)
The CD mechanism ass’y can be
removed if only the rear damper
bracket on the left side is removed.
ATTENTION:
Fig.5
Fig.6
Fig.7
Fig.8
Fig.9
Rear damper bracket
Fix arm (R)
Damper
H
II
Loading motor
Belt
Damper bracket
CD mechanism ass’y
Flame m
m
I
I
Fix plate (L)
ll
Rear damper bracket
Fix arm (L)
Damper
J
Fix plate(R)
J
l
l

KD-S570/KD-S620
1-8
Prior to performing the following procedure, remove
the CD mechanism control board, the front bracket
(loading motor) and the CD mechanism ass’y.
Remove the two screws K and the feed motor ass’y.
1.
Removing the feed motor ass’y
(See Fig.10)
*Prior to performing the following procedure, remove
the CD mechanism control board, the front bracket
(loading motor), the CD mechanism ass’y and the
feed motor ass’y.
Detach the FD gear part of the pickup unit upward.
Then remove the pickup unit while pulling out the
part n of the FD screw.
1.
Remove the screw L attaching the nut push spring
plate and the pickup mount nut from the pickup unit.
Pull out the FD screw.
2.
Removing the pickup unit
(See Fig.10 and 11)
When reattaching the pickuap unit,
reattach the part o of the pickup unit,
then the part n of the FD screw.
ATTENTION:
Prior to performing the following procedure, remove
the CD mechanism control board, the front bracket
(loading motor), the CD mechanism ass’y and the
feed motor ass’y.
Turn up the CD mechanism ass’y and remove the
two springs p on both sides of the clamper arms.
Open the clamper arm upward.
Turn the turn table, and remove the two screws M
and the spindle motor.
1.
2.
Removing the spindle motor
(See Fig.12 and 13)
Fig.10
Fig.11
Fig.12
Fig.13
Spindle motor
pp
Pickup unit
Part n
FD screw
Feed motor ass’y
FD gear Pickup unit
Part O
K
Nut push spring plate Pickup mount nut
Pickup unit
FD screw
L
M
M

KD-S570/KD-S620
1-9
Adjustment method
Test instruments required for adjustment
1.Digital oscilloscope (100MHz)
2.AM Standard signal generator
3.FM Standard signal generator
4. Stereo modulator
5. Electric voltmeter
6.Digital tester
7.Tracking offset meter
8.Test Disc JVC :CTS-1000
9.Extension cable for check
EXTGS004-26P 1
Standard measuring conditions
Power supply voltage DC14.4V(10.5~16V)
Load impedance 20Kohm(2 Speakers connection)
Output Level Line out 2.0V (Vol. MAX)
How to connect the extension cable for adjusting
Dummy load
Exclusive dummy load should be used for AM,and FM.For
FM dummy load,there is a loss of 6dB between SSG output
and antenna input.The loss of 6dB need not be considered
since direct reading of figures are applied in this working
standard.
Standard volume position
Balance and Bass &Treble volume : lndication"0"
Loudness : OFF
BBE : OFF
Frequency Band
FM 87.5MHz ~ 108.0MHz
MW 522kHz ~ 1620 kHz
LW 144kHz ~ 279kHz
EXTGS004-26P
The cardboard is cut in a suitable size.
uses for the insulation stand of mechanism.

KD-S570/KD-S620
1-10
Power ON
Set Function to CD
Play
Jump to the first track
TOC readout
Tracking loop closed
Disc rotates
Disc inserted
YES
YES
Laser emitted
Pickup feed to the inner area
Focus search
RF signal eye-pattern
opens
RF signal eye-pattern
remains closed
"No disc"
display
•When correctly focused
Focus Servo Loop ON
•When the laser diode correctly
emits
Microprocessor
commands
Rough Servo Mode
CLV Servo Mode
(ProgramArea)
CLV Servo Mode
(Lead-In Area;
Digital: 0)
•RF signal
Flow of functional operation untilTOC read
•When the pickup correctly moves
to the inner area of the disc
TERMINAL
Microprocessor
commands
FMO
TC9462 "53"
FEED MOTOR
+TERMINAL
IC581 "5"
REST SW
•When the disc correctly rotates
Tracking Servo Loop ON
Servo CLV
Rough
Servo
AccelerationAcceleration
Microprocessor
commands
Spindle
motor (-)
IC581 "7"
0.5 Sec 0.5 Sec

KD-S570/KD-S620
1-11
Feed Section
Focus Section
Tracking Section
Spindle Section
Is the voltage output at
IC521 pin "53" 5V or 0V?
Check the feed motor.
Is 4V present at both
sides of the feed motor?
Is the wiring for IC521
(90) ~ (100) correct?
Check IC581.
Is 6V or 2V present at
IC581 "5" and "6"?
Is 5V present at IC581
pin "11"?
Check the feed motor
connection wiring.
Check the vicinity of
IC521.
Check CD 9V
and 5V.
YES
YES
YES
NONO
NO
NO
NO
YES
YES
When the lens is
moving: Check the circuits in
the vicinity of IC581
pins "15" ~ "18".
Check the pickup and
its connections.
NO
YES
YES
YES
Does the S-search
waveform appear at
IC581 pins "17" and "18"?
Is the disk rotated?
Does the RF signal
appear at TP1?
Is 4V present at IC581
pins "7" and "8" ?
Check the spindle motor
and its wiring.
Is 4V present at IC521
pin "55" ?
Check the vicinity of
IC581.
Check IC501 and
IC521.
YES
NO
NO
NO
NO NO
YES
YES
YES
Check the circuits in the
vicinity of IC501 "19" ~
"24" or the pickup
Is the RF waveform at TP1
distorted?
Proceed to the Tracking
section
When the disc is rotated
at first: Check the circuit in the
vicinity of IC501 pins
"2" ~ "12".
Check IC521.
Check the pickup and
its connections.
YESYES
YES
Is the tracking error signal
output at IC501 "12"?
Approx. 1.2 V
4V

KD-S570/KD-S620
1-12
Maintenance of laser pickup
(1) Cleaning the pick up lens
Before you replace the pick up, please try to
clean the lens with a alcohol soaked cotton
swab.
(2) Life of the laser diode
When the life of the laser diode has expired,
the following symptoms will appear.
(1) The level of RF output (EFM output:ampli
tude of eye pattern) will be low.
Replacement of laser pickup
Is RF output
1.0 0.35Vp-p? Replace it.
NO
YES
O.K
(3) Semi-fixed resistor on the APC PC board
The semi-fixed resistor on the APC printed
circuit board which is attached to the pickup
is used to adjust the laser power.Since this
adjustment should be performed to match the
characteristics of the whole optical block,
do not touch the semi-fixed resistor.
If the laser power is lower than the specified
value,the laser diode is almost worn out, and
the laser pickup should be replaced.
If the semi-fixed resistor is adjusted while
the pickup is functioning normally,the laser
pickup may be damaged due to excessive current.
Turn off the power switch and,disconnect the
power cord from the ac outlet.
Replace the pickup with a normal one.(Refer
to "Pickup Removal" on the previous page)
Plug the power cord in,and turn the power on.
At this time,check that the laser emits for
about 3seconds and the objective lens moves
up and down.
Note: Do not observe the laser beam directly.
Play a disc.
Check the eye-pattern at TP1.
Finish.

KD-S570/KD-S620
1-13
3.Pin Functions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
SDA
GND
OUTLR
OUTLF
TL
B2L
B1L
IVL
ILL
QSL
IDL
MUTE
ICL
IMD
IBL
IAL
SCL
VCC
OUTRR
OUTRF
TR
B2R
B1R
IVR
ILR
QSR
IDR
Vref
ICR
CAP
IBR
IAR
CD-CH
TAPE
TUNER
POWER
SUPPLY
SOURCE
SELECTOR
VOLUME 1
+20 to -31 dB
LOUDNESS
LEFT
BASS
LEFT
+15 dB
TREBLE
LEFT
+12 dB
BASS
RIGHT
+15 dB
TREBLE
RIGHT
+12 dB
MUTE
FUNCTION
ZERO CROSS
DETECTOR
VOLUME 2
0 to 55 dB
BALANCE
FENDER REAR
VOLUME 2
0 to 55 dB
BALANCE
FENDER FRONT
HC BUS
REC
VOLUME 2
0 to -55dB
BALANCE
FENDER FRONT
VOLUME 2
0 to -55dB
BALANCE
FENDER REAR
VOLUME 1
+20 to -31 dB
LOUDNESS
RIGHT
LOGIC
21
31
2
19
16
15
13
11
22
20
18
17
14
23 25 24 26 27 28
30
29
1
32
3
4
10 8 9 7 6 512
1.Terminal Layout 2.Block Diagram
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin
No. Pin No.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
SDA
GND
OUTLR
OUTLF
TL
B2L
B1L
IVL
ILL
QSL
IDL
MUTE
ICL
IMO
IBL
IAL
Serial data input/output.
Ground.
output left rear.
output left front.
Treble control capacitor left channel or
input from an external equalizer.
Bass control capacitor leftchannel or
output to an external equalizer.
Bass control capacitor left channel.
Input volume 1.left control part.
Input loudness.left control part.
Output source selector. left channel.
Not used
Not used
Input C left source.
Not used
Input B left source.
Input A left source.
I/O
-
O
O
I
-
-
I
I
O
-
-
I
-
I
I
Symbol I/O Symbol I/O
Input A right source.
Input B right source.
Electronic filtering for supply.
Input C right source.
Reference voltage (0.5Vcc)
Not used
Output source selector right channel.
Input loudness right channel.
Input volume 1.right control part.
Bass control capacitor right channel
Bass control capacitor right channel or
output to an external equalizer.
Treble control capacitor right channel or
input from an external equalizer.
Output right front.
Output right rear.
Supply voltage.
Serial clock input.
I
I
-
I
-
-
O
I
I
-
O
I
O
O
-
I
IAR
IBR
CAP
ICR
Vref
IDR
QSR
ILR
IVR
B1R
B2R
TR
OUTRF
OUTRR
Vcc
SCL
Functions Functions
TEA6320T-X(IC301) : E.volume
Description of major ICs

KD-S570/KD-S620
1-14
AN8806SB-W (IC501) : RF&Servo amp.
PD
LD
LDON
LDP
VCC
RF-
RF OUT
RF IN
C.AGC
ARF
C.ENV
C.EA
CS BDO
BDO
CS BRT
OFTR
/NRFDET
GND
PDAC
PDBD
PDF
PDE
PDER
PDFR
TBAL
FBAL
EF-
EF OUT
TE-
TE OUT
CROSS
TE BPF
VDET
LD OFF
VREF
ENV
30 24 25 26 23 22 14 3
33
32
34
31
36
35
13
14
15
16
20
2
21
629
728
27 8910 17 11 12 19
ENV CURCUIT
RF
DET
AGC
EQ
BDO
OFTR
--
+
--
+
-- +
-- +
-- +
--
+
--
+--
+
--
+--
+
--
+
--
+
--
+
--
+
--
+
--
+
--
+
-- +
VCBA
VCBA
VCBA
VCBA
--
+
1.Pin layout
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
2.Block diagram

KD-S570/KD-S620
1-15
35
36
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
3. Pin function
PD AC
FBAL
TBAL
PDFR
PDER
PDF
PDE
PD BD
TE BPF
VDET
CROSS
TE OUT
TE-
FE OUT
FE-
/NRFDET
GND
LD OFF
VREF
ENV
OFTR
C.AGC
ARF
C.ENV
C.EA
CS BDO
BDO
CS BRT
LD
LD ON
LDP
VCC
RF-
RF OUT
RF IN
PD
Pin No.
Symbol I/O
I
O
I
--
--
I
O
I
I/O
O
I/O
I/O
I/O
O
I/O
O
O
--
O
O
--
O
I
O
O
I
O
I
I
I
I/O
I/O
I
I
I
I I-V amp input
I-V amp input
I-V amp input
I-V amp input
E I-V amp gain control
F I-V amp gain control
Tracking balance control
Focus balance control
Inverse input pin for focus error amp
Output pin of focus error
Inverse input pin for tracking error amp
Tracking error signal output
Tracking error cross output
Input pin of tracking error through BPF
Vibration detection signal output
Connect to ground
Reference voltage output
Description
APC amp input terminal
APC amp output terminal
APC ON/OFF control terminal
Envelope output
Ground
RF detection signal output
Of-track status signal output
BDO output pin
A capacitor is connected to this terminal to detect the envelope of RF signal
RF output
Connecting pin of AGC loop filter
RF input
RFamp output
Inverse input pin for RF amp
Power supply
Connect to ground
A capacitor is connected to this terminal to detect the envelope of RF signal
A capacitor is connected to detect the lower envelope of RF signal
A capacitor is connected to detect the lower envelope of RF signal
AN8806SB-W

KD-S570/KD-S620
1-16
1. Terminal Layout
20 ~ 1
41 ~ 60
21
40
~
80
61
~
2. Block Diagram
O
F
T
/
R
F
D
E
B
D
O
V
D
E
T
T
R
C
R
S
R
F
E
N
V
T
E
F
E
INPUT SERVO
TIMING GENERATOR
A/D
CONVERTER
/
T
E
S
T
/
R
S
T
D
V
S
S
1
D
V
D
D
1
V
S
S
V
D
D
CLV
SERVO
MICRO
COMPUTER
INTERFACE
VCO
ITUNING
GENERATION
PITCH
CONTROL
ÊSTAT
CK384(EFM)
VCOF
BYTCK
SMCK
FCLK
CSEL
MSEL
X2
X1
PCK
EFM
PLLF
DSLF
IREF
DRF
ARF
RSEL
PSEL
MLD
MCLK
MDATA
DSL.
PLL
VCO
AVDD2
SUB
CODE
BUFFER
SSEL
SQCK
SUBQ
AVDD2
CLVS
CRC
BLKCK
CLDCK
SBCK
SUBC
DEMPH
RESY
FLAG6(RESY)
EFM
DEMODULATION
SUBCODE
DEMODULATION
SYNC
INTERPOLATION
16k
SRAM
CIRC
ERROR
CORRECTION
DEINTERLEVE
LRCKIN(MSEL)
BCLK(SSEL)
SRDATAIN
(PSEL)
IOSEL
DIGITAL
DEEMPHSIS
8TIMES
OVER SAMPUNC
DIGITAL FILTER 1BIT
DAC
LOGIC
S
PEM
(R)
PEM
(L)
DIGITAL
AUDIO
INTERFACE
DIGITAL
AUDIO
INTERFACE
INTER POLATION
SOFT MUTING DIGITAL
ATTENUATION
PEAK DETECTIVE
AUTO CUE
D/A
CONVERTER
OUTPUT PORT
AVSS1
AVDD1
OUTR
OUTL
FLAG
IPFLAG
TX
ECM
PC
LRCK
SRDATA
BCLK
DMUTE
TRKV
KICK
VREF
TRVSTR
ECS
TVD
TRD
FOD
TBAL
FBAL
TOFS
TES
/TLOCK
/FLOCK
PLAY
LDON
WVEL
SENSE
MN35510(IC561):Digital servo & digital signal processor

KD-S570/KD-S620
1-17
3. Description
Pin
No. symbol I/O
O
O
O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Pin
No. symbol I/O
42
41
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
O
I
I
I
I
O
BCLK
LRCK
SRDATA
DVDD1
DVSS1
TX
MCLK
MDATA
MLD
I
I
I
SENSE
FLOCK
TLOCK
BLKCK
SQCK
O
O
O
O
O
O
I
I
I
I
I
SUBQ
DMUTE
STATUS
I
O
O
RST
SMCK
PMCK
TRV
TVD
PC
ECM
ECS
KICK
TRD
O
O
O
O
O
O
O
I
I
I
FOD
VREF
FBAL
TBAL
FE
TE
I
I
I
I
I
RF ENV
VDET
OFT
TRCRS
I
O
RFDET
BDO
LDON
Description
Not used
Not used
Not used
Connected to GND
Digital audio interface output
Power supply (Digital)
Micom command clock signal input
Micom command load signal input
Micom command data input
Focus lock signal output Active :Low
Sence signal output
(Data is latched at signal's rising point)
Tracking lock signal output Active :Low
sub-code - block - clock signal output
Outside clock for sub-code Q resister input
Sub-code Q -code output
Connected to GND
Status signal
(CRC,CUE,CLVS,TTSTOP,ECLV,SQOK)
Reset signal input (L:Reset)
Not used
Not used
Traverse enforced output
Traverse drive output
Not used
Spindle motor drive signal (Enforced
mode output) 3-State
Spindle motor drive signal (Servo error
signal output)
Kick pulse output
Tracking drive output
Focus drive output
Reference voltage input pin for D/A
output block (TVD,FOD,FBA,TBAL)
Focus Balance adjust signal output
Tracking Balance adjust signal output
Focus error signal input(Analog input)
Tracking error signal input(Analog input)
RF envelope signal input(Analog input)
Vibration detect signal input(H:detect)
Off track signal input(H:off track)
Track cross signal input
RF detect signal input(L:detect)
BDO input pin(L:detect)
Laser ON signal output(H:on)
I
I
I
I/O
I/O
I
IIIII
Description
Not used
Not used
TES
PLAY
WVEL
ARF
IREF
DRF
DSLF
PLLF
Tracking error shunt signal output(H:shunt)
RF signal input
Reference current input pin
Bias pin for DSL
Not used
Loop filter pin for DSL
Loop filter pin for PLL
Power supply(Analog)
Connected to GND(Analog)
Not used
Not used
Not used
Not used
Not used
IIII
Connected to GND(for X'tal oscillation
circuit)
I
O
I
O
O
I
I
III
I
I
III
I
II
I
I
I
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Pull up
Connected to GND
Connected to GND
Connected to GND
pull up
pull up
pull up
Power supply(Digital)
Lch audio output
Connected to GND
Rch audio output
Power supply(for X'tal oscillation circuit)
Input of 16.9344MHz X'tal oscillation circuit
Output of X'tal oscillation circuit
VCOF
AVDD2
AVSS2
EFM
PCK
PDO
SUBC
SBCK
VSS
XI
X2
VDD
BYTCK
CLDCK
FLAG
IPPLAG
FLAG
CLVS
CRC
DEMPH
RESY
IOSEL
TEST
AVDD1
OUT L
AVSS1
OUT R
RSEL
SSEL
MSEL
PSEL
CSEL
MN35510

KD-S570/KD-S620
1-18
LA6557-X(IC541) : Servo BTL driver
1 2 3 4 5 6 7 8 9 10 11 12 13 14
28 27 26 25 24 23 22 21 20 19 18 17 16 15
- +
- +
- +
- +
- +
- +
- +
FR
FR
Signal system
power
CH1,2
POWER POWER
Output
control
MUTE is as follows
High : output ON
Low : output OFF
Input
11k
11k
11k
11k
22k
22k 22k
22k
Mute
Level
shift Level shift Level
shift Level shift
CH3,4,5
CH5 CH4 CH3 CH2 CH1
VCC2 V05- V05+ V04+ V04- V03+ V03- FR V02+ V02- V01+ V01- VCC1 VIN1 VIN1G
REW FWD S-GND MUTE VIN4 VING4 VCC-S FR
VREF-IN REG-OUT REG-IN VIN3G VIN3 VIN2G VIN2
Thermal shutdown
1. Block diagram
2.Pin function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
VCC2
V05-
V05+
V04+
V04-
V03+
V03-
V02+
V02-
V01+
V01-
VCC1
VIN1
VIN1G
VIN2
VIN2G
VIN3
VIN3G
REG-IN
REG-OUT
VRFE-IN
VCC-S
VIN4G
VIN4
MUTE
S-GND
FWD
REV
Power for channels 3,4, and 5 (VCC1 and VCC-S short-circuited)
Loading output (-)
Loading output (+)
Output pin (+) for channel 4
Output pin (-) for channel 4
Output pin (+) for channel 3
Output pin (-) for channel 3
Output pin (+) for channel 2
Output pin (-) for channel 2
Output pin (+) for channel 1
Output pin (-) for channel 1
Power for channels 1 and 2 (BTL), (VCC-S and VCC2 short-circuited)
Input pin for channel 1
Input pin for channel 1 (for gain control)
Input pin for channel 2
Input pin for channel 2 (for gain control)
Input pin for channel 3
Input pin for channel 3 (for gain control)
Regulator pin (External PNP base)
Regulator pin (External PNP collector)
Reference voltage input pin
Signal system power (VCC1 andVCC2 short-circuited)
Input pin for channel 4 (for gain control)
Input pin for channel 4
Output ON/OFF, channels 1 to 4 (BTL AMP)
Signal system GND
5CH(VL0) Output change pin (FWD), Logic input for loading block
5CH(VL0) Output change pin (REW), Logic input for loading block
Pin
No. Pin Name Description

KD-S570/KD-S620
1-19
LC72366-9989 (IC801) : Main micon
1. Pin layout
2. Pin function
1
24
64
41
80 ~ 65
25 ~ 40
~ ~
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
XIN
TEST2
J BUS SI
J BUS SO
J BUS SCK
J BUS I/O CONT
SUBQ
SQCK
RESET
LCD SI
LCD SO
LCDSCK
LCD CE
FM ILLUMI
AM ILLUMI
CD ILLUMI
DIMMER OUT
LM0
LM1
KS2
KS1
KS0
DETACH
K2
K1
K0
Vdd
SW2
CD LSI RESET
MCLK
MDATA
MLD
SCL
SDA
4.5MHz crysral oscillation
Connect to ground
J-BUS signal data input ( to 74HC126 )
J-BUS signal data output ( to 74HC126 )
J-BUS output clock signal ( to 74HC126 )
J-BUS I/O control
CD LSI subcode data input
No use
CD LSI subcode clock
Micon reset pin
No use
LCD driver data output
LCD driver clock signal
LCD driver chip enable port
No use
No use
No use
No use
CD loading motor output
CD loading motor output
No use
No use
No use
No use
No use
Output for initial setting diode matrix
Front panel detect
No use
Input for initial setting diode matrix
Input for initial setting diode matrix
5V power supply
CD mechanism switch 2 for 12cm disc
CD LSI reset
CD LSI command clock signal
CD LSI command data output
CD LSI command load signal
No use
No use
E.volume clock output
E.volume data output
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
76
75
76
77
78
79
80
CD ON
RELAY
BBE CTL
BEEP
SW4
SW1
SW3
REST
JOG0
JOG1
CD SENSE
STATUS
P.SAVE2
SD/ST
REMOCON
J BUS INT
BAND
MONO
IFRQ/AGC
MUTE
LEVEL
S METER
KEY CHANGE
KEY2
KEY1
KEY0
P.SAVE1
SENSE
FM IF COUNT
Vdd
AM OSC
FM OSC
Vss
EO
TEST1
XOUT
CD 8V supply on
5V power control
No use
No use
CD mechanism switch 1 for disc in, 8cm disc
CD mecha.switch 3 for disc present, loading end
CD pickup rest position
Rotary encoder input 0
Rotary encoder input 1
CD LSI sense signal
CD LSI status signal
Power save 2 :+B detect
Station detection, Stereo indication
Remocon input
J-BUS interrrupt
FM/AM band selection
FM mono selection
During FM auto search, IF request output H after SD
detected.During AM suto search, AGC output.
Muting switch
Level meter input
S meter input
Connect to ground
Key 2 data input (AD)
Key 1 data input (AD)
Key 0 data input (AD)
Power save 1, ACC power detect
Voltage sense
No use
FM IF counter data input
No use
No use
5V power supply
No use
FM input frequency
Ground
No use
PLL error output signal
Connect to ground
4.5MHz crystal oscillation
Pin
No. Pin No.
Symbol SymbolFunction Function

KD-S570/KD-S620
1-20
HA13158A (IC321) : Power amp
1. Pin layout
2. Block diagram
IN1
IN2
IN3
IN4
STBY
2
1
11
13
23
10
TAB
PROTECTOR (ASO
SURGE, TSD)
INPUTBUFFER1
INPUTBUFFER2
INPUTBUFFER3
INPUTBUFFER4
AMP1
AMP2
AMP3
AMP4
MUTE
PVCC1PVCC2
INVCC +
-
+
-
+
-
+
-
12 22
14 18 6
3
4
5
7
8
9
15
16
17
19
20
21
1 ~ 23