JVC KD-S7R User manual

SERVICE MANUAL
CD RECEIVER
No.49611
Feb. 2001
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
KD-S7R
KD-S7R
Area Suffix
E ---- Continental Europe
EX---------Central Europe
Contents
Safety precaution
Preventing static electricity
Important for laser products
Location of main parts
Disassembly method
1-2
1-3
1-4
1-5
1-6
Adjustment method
Flow of functional
operation unit TOC read
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
1-11
1-12
1-14
1-14
1-15
COMPACT
DIGITAL AUDIO

KD-S7R
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-S7R
1-3
Conductive material
(conductive sheet) or iron plate
(caption)
Anti-static wrist strap
Preventing static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged,
can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.2. Handling the traverse unit (optical pickup)
1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
2. Cut off the shorted part of the flexible cable using nippers, etc.after replacing the optical pickup.For specific
details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse
unit. Be careful not to take too long a time when attaching it to the connector.
3. Handle the flexible cable carefully as it may break when subjected to strong force.
4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it
1.1.3. Handling the optical pickup
1. In order to maintain quality during transport and before installation, both sides of the laser diode on the
replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
2. Do not use a tester to check the condition of the laser diode in the optical pickup.The tester's internal power
source can easily destroy the laser diode.
1.1.2. Ground yourself
1. Use an anti-static wrist strap to release any static electricity built up in your body.
1.1.1. Ground the workbench
1. Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over
it before placing the traverse unit (optical pickup) on it.
1.1. Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players.
Be careful to use proper grounding in the area where repairs are being performed.
FD screw
Feed motor ass’y
FD gear Pickup unit
Shorting Short circuit land

KD-S7R
1-4
Important for laser products
1.CLASS 1 LASER PRODUCT
2.DANGER : Invisible laser radiation when open and inter
lock failed or defeated. Avoid direct exposure to beam.
3.CAUTION : There are no serviceable parts inside the
Laser Unit. Do not disassemble the Laser Unit. Replace
the complete Laser Unit if it malfunctions.
4.CAUTION : The compact disc player uses invisible
laserradiation and is equipped with safety switches
whichprevent emission of radiation when the drawer is
open and the safety interlocks have failed or are de
feated. It is dangerous to defeat the safety switches.
5.CAUTION : If safety switches malfunction, the laser is able
to function.
6.CAUTION : Use of controls, adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
VARNING : Osynlig laserstrålning är denna del är öppnad
och spårren är urkopplad. Betrakta ej strålen.
VARO : Avattaessa ja suojalukitus ohitettaessa olet
alttiina näkymättömälle lasersäteilylle.Äläkatso
säteeseen.
ADVARSEL : Usynlig laserstråling ved åbning , når
sikkerhedsafbrydere er ude af funktion. Undgå
udsættelse for stråling.
ADVARSEL : Usynlig laserstråling ved åpning,når
sikkerhetsbryteren er avslott. unngåutsettelse
for stråling.
REPRODUCTION AND POSITION OF LABELS
WARNING LABEL
DANGER : Invisibie laser
radiation when open and
interlock or defeated.
AVOID DIRECT EXPOSURE
TO BEAM (e)
VARNING : Osynlig laser-
strålning är denna del
är öppnad och spårren är
urkopplad. Betrakta ej
strålen. (s)
VARO : Avattaessa ja suo-
jalukitus ohitettaessa olet
alttiina näkymättömälle
lasersäteilylle.Äläkatso
säteeseen. (d)
ADVARSEL :Usynlig laser-
stråling ved åbning , når
sikkerhedsafbrydere er ude
af funktion. Undgåudsæt
telse for stråling. (f)
CLASS 1
LASER PRODUCT
!
CAUTION
Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.

KD-S7R
1-5
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
Pickup unit
Damper Feed motor
Spindle motor

KD-S7R
1-6
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 button 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
AHeat sink
c
d
e
Fig.2
Fig.1
Fig. 3
Fig. 4
Bottom cover
Front chassis

KD-S7R
1-7
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-S7R
1-8
Prior to disassembling the CD mechanism, remove
the following parts.
The front panel unit and the front chassis (Refer to
Fig.1 and 2)
The heat sink (Refer to Fig.3)
The bottom cover (Refer to Fig.4)
The main amplifier board (Refer to Fig.5 and 6)
The CD mechanism assembly (Refer to Fig.7)
<CD mechanism section>
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.
1.
2.
Removing the CD mechanism control
board(See Fig.10 and 11)
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.11).
ATTENTION:
Fig.10
Fig.11
Fig.12
Fig.13
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
assembly
F
j
k
G
k
G

KD-S7R
1-9
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.
*
1.
2.
3.
Removing the loading motor
(See Fig.12 to 14)
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.17 and 18.
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.10, 15 to 18)
The CD mechanism ass’y can be
removed if only the rear damper
bracket on the left side is removed.
ATTENTION:
Fig.14
Fig.15
Fig.16
Fig.17
Fig.18
Rear damper bracket
Fix arm (R)
Damper
H
II
Loading motor
Belt
Damper bracket
CD mechanism assembly
Flame
mm
I
I
Fix plate (L)
ll
Rear damper bracket
Fix arm (L)
Damper
J
Fix plate(R)
J
l
l

KD-S7R
1-10
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 assembly
(See Fig.19)
*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.19 and 20)
When reattaching the pickup 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.21 and 22)
Fig.19
Fig.20
Fig.21
Fig.22
Spindle motor
pp
Pickup
unit
Part n
FD screw
Feed motor
assembly
FD gear Pickup unit
Part O
K
Nut push spring plate Pickup
mount nut
Pickup unit
FD screw
L
M
M

KD-S7R
1-11
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 4 (4 to 8 allowance)
Output Level Line out 2.0V / 20 k (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

KD-S7R
1-12
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-S7R
1-13
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-S7R
1-14
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-S7R
1-15
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.Pin Layout
3.Pin Functions
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 left channel 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 (IC161) : E.volume
Description of major ICs

KD-S7R
1-16
UPD178076GF-525 (IC701): System CPU
1.Terminal layout
2.Block diagram
1
30
~
80
51
~
100 ~ 81
31 ~ 50
8-bit TIMER/
EVENT COUNTER 1
8-bit TIMER/
EVENT COUNTER 0
WATCHDOG TIMER
BASIC TIMER
SERIAL
INTERFACE 0
TO0/VTR-CONT
TI00/POWER
TI01/CD-ON
TI50/MUTE
TO50/NC
TI51/STAGE
TO51/NC
SI0/SB0/SDA0/NC
SO0/SB1/SDA1/VOL-DA
SCK0/SCL/VOL-CLK
SI1/JBUS-SI
SO1/JBUS-SO
SCK1/JBUS-SCK
STB/NC
BUSY/NC
SI3/NC
SO3/LCD-DA
SCK3/SCL/LCD-CLK
RESET
CPU
PERIPHERAL
VOSC
VCPU
TXD0/LM1
RXD0/LM0
INTP0/NC
INTP7/NC
VM45/VTR-LOGIC
REGOSC
REGCPU
GND0
GND1
BEEP0/BUZZER
BUZ/JAPAN
RESET
X1
X2
VDDPORT
GNDPORT
VDD
SERIAL
INTERFACE 1
SERIAL
INTERFACE 3
UART0
8INTERRUPT
CONTROL
BUZER OUTPUT
SYSTEM
CONTROL
VOLTAGE
REGULATOR
PLL
VOLTAGE
REGULATOR
PLL
FREQUENCY
COUNTER
A/D
CONVERTER
PORT 13
PORT 12
PORT10
PORT 7
PORT 6
PORT 5
PORT 4
PORT 3
PD178078
:3Kbyte
PD178076
:2Kbyte
RAM
PD178078
:60Kbyte
PD178076
:48Kbyte
RAM
78k/0
CPU
CPRE
16-bit TIMER/
EVENT COUNTER PORT 0
PORT 1
PORT 2
8
8
8
8
8
8
8
8
8
8
3
5
NC,JBUS-INT,SW1,
REMOCON,PS1,PS2,
DETACH,NC
KEY0,KEY1,KEY2,LEVEL,
SM,NC,
JBUS-SI,JBUS-SO,
JBUS-SCK,NC,VOL-DA,
VOL-CLK
VTR-LOGIC,VTR-CONT,
POWER,CD-ON,MUTE,
STAGE,BUZZER,JAPAN
NC
NC,LCD-CE,SW2,SW3,
SW4,RST-SW,ENC1,ENC2
MONO,SEEK/STOP,
FM/AM,NC,
NC,LCD-DA,LCD-CLK,
JBUS-/O,LM0,LM1,BUCK,
CCE
SD/ST,NC,IFC
BUS0,BUS1,BUS2,BUS3,
RST
NC
AN10/KEY0
AN17/NC
AMIFC/NC
FMIFC/IFC
EO1
EO0
VCOL
VCOH
VDDPLL
GNDPLL
IC
GND2
AVDD
AVSS

KD-S7R
1-17
UPD178076GF-525(1/2)
Pin
NO.
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
41
42
43
44
45
46
47
48
49
50
-
I
I
O
O
-
-
I
O
O
-
O
O
O
-
O
I
I
I
I
I
I
I
I
I
I
-
I
I
-
-
-
-
-
-
-
I
-
I
-
-
I
-
I
-
-
O
O
-
I
NC
BUSINT
BUSSI
BUSSO
JBUS-SCK
NC
NC
I2CDAI
I2CDAO
I2CCLK
NC
LCDDA
LCDSCK
BUSI/O
NC
LCDCE
SW2
SW3
SW4
RSTSW
ENC1
ENC2
KEY0
KEY1
KEY2
LEVEL
AVDD
SM
SQ
NC
NC
AVSS
REGCPU
VDD
REGOSC
X2
X1
GND0
SD/ST
GND2
NC
IFC
VDDPLL
OSC
NC
GNDPLL
AMEQ
FMEQ
IC(VPP)
RESET
I/OSymbol FUNCTION
Non connection
JVC BUS COMMUNICATION LINE
JVC BUS COMMUNICATION LINE
JVC BUS COMMUNICATION LINE
JVC BUS COMMUNICATION LINE
Non connection
Non connection
SERIAL DATA INPUT
SERIAL DATA OUTPUT
SERIAL CLOCK OUTPUT
Non connection
LCD DRIVER SERIAL DATA OUTPUT
LCD DRIVER SERIAL CLOCK OUTPUT
JVC BUS OUTPUT SELECT
Non connection
LCD DRIVER COMMUNICATION LINE
CD MECHA SW
CD MECHA SW
CD MECHA SW
TRAVERSE MECHA REST SW
ENCODER INPUT
ENCORDER INPUT
KEY INPUT
KEY INPUT
KEY INPUT
AUDIO LEVEL INPUT
---
SIGNAL LEVEL METER INPUT
SIGNAL QUALITY INPUT
Non connection
Non connection
---
---
---
---
SYSTEM CLOCK
SYSTEM CLOCK
---
STATION DETECTOR & STEREO IND.
---
Non connection
IF COUNT INPUT
---
FM,AM OSC INPUT
Non connection
---
PLL ERROR OUTPUT FOR AM
PLL ERROR OUTPUT FOR FM
SETTING TO WRITE FOR FLASH
SYSTEM RESET
3.Pin function

KD-S7R
1-18
UPD178076GF-525(2/2)
Pin
NO.
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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I
I
-
O
O
O
O
-
-
-
-
-
-
-
-
-
-
-
O
O
O
O
I/O
I/O
I/O
I/O
O
I
I
I
I
-
O
O
O
O
I
-
-
-
-
-
-
-
-
-
-
-
-
-
SW1
REMOCON
NC
TEL_MUTE
POWER
CDON
MUTE
STAGE 1
BUZZER
STAGE 2
NC
NC
NC
NC
NC
NC
NC
NC
LM0
LM1
BUCK
CCE
BUS0
BUS1
BUS2
BUS3
RST
PS1
PS2
DETACH
RDSSCK
GND1
MONO
SEEK/STOP
FM/AM
AFCK
RDSDATA
PLLMONITOR
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
VDDPORT
GNDPORT
I/OSymbol FUNCTION
CD MECHA SW
REMOCON INPUT
Non connection
TEL MUTE OUTPUT
POWER CONT.
CD POWER CONT.
MUTE CONT
---
Non connection
---
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
CD MECHA DRIVER CONT.
CD MECHA DRIVER CONT.
CD LSI COMMUNICATION LINE
CD LSI COMMUNICATION LINE
CD LSI COMMUNICATION LINE
CD LSI COMMUNICATION LINE
CD LSI COMMUNICATION LINE
CD LSI COMMUNICATION LINE
CD LSI COMMUNICATION LINE
ACC DETECTION INPUT
MEMORY DETECTION
DETACH DETECTION
CLOCK INPUT FOR RDS
---
MONO BY FORCE
SWITCHING SEEK & STOP
BAND SW
AF CHECK OUTPUT
RDS DATA INPUT
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
---
---

KD-S7R
1-19
1234 5678 9101112
BA4905-V3 (IC961) : Regulator
1.Terminal layout
2.Block daigram
EXT
EXT ACC AUDIO 9V CTRL ILM 10V GND
RESET
RESET COMP VDD 5.7V CD 8V VCC AJ
1 2 3 4 5 6 7 8 9 10 11 12
37K
5K
REGULATOR
Overvoltage protection circuit
Pin no. Symbol Function
RESET
EXT output
COMP output
ACC
VDD output
AUDIO output
CD output
CTRL
VCC
ILM output
AJ
GND
1
2
3
4
5
6
7
8
9
10
11
12
If VDD voltage becomes 4V or less.RESET output becomes low level.
This output voltage is approximately 0.5V lower than VCC.and max
output current is 300mA.
A voltage supply for ACC block.This output voltage is approximately
0.7V lower than VDD'S.The max output current is 100mA.
Control of the COMP output by inputting voltage.
This output voltage is 5.7V, and max output current is 100mA.
This voltage supply is for microcomputer.Whenever back up voltage
supply is connected, the output keeps on running.
This output voltage is 9.0v, and max output current is 500mA.
This voltage supply for AUDIO.
This output voltage is 8.0V, and max output current is 1A.
This voltage supply for CD.
Output selector of CD. AUDIO, ILM and EXT.
To be connected with the BACK UP of car.
This output voltage is 10V, and max output current is 500mA.
Output voltage is adjustable.
Putting a resistance between ILM and AJ or between AJ and GND
makes ILM output voltage adjustable.
Ground.
3.Pin function

KD-S7R
1-20
HA13158A (IC301) : 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