JVC KD-SX885 Service Manual

SERVICE MANUAL

CD RECEIVER

KD-SX885

SOUND

ATT

U

SOURCE

F

R

D

VOL

VOL

COMPACT

DIGITAL AUDIO

KD-SX885

Contents

Safety precaution
Preventing static electricity
Disassembly method
Adjustment method

1-2
1-3
1-4
1-18

Flow of functional
operation unit TOC read
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs

COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.

U --------------------- Other Areas

Area Suffix

1-19
1-21
1-21
1-22~35

No.49735

Apr. 2002

KD-SX885

Safety precaution

CAUTION

!

CAUTION

!

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.

Please use enough caution not to see the beam directly or touch it in case of an
adjustment or operation check.

1-2

KD-SX885

Preventing static electricity

1.Grounding to prevent damage by 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.

2.About the earth processing for the destruction prevention by static electricity

Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
Be careful to use proper grounding in the area where repairs are being performed.

2-1 Ground the workbench

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.

2-2 Ground yourself

Use an anti-static wrist strap to release any static electricity built up in your body.

(caption)
Anti-static wrist strap

Conductive material
(conductive sheet) or iron plate

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.

4.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

CD mechanism ass’y

Damper bracket

Attention when traverse unit is decomposed

*Please refer to "Disassembly method" in the text for pick-up and how to
detach the substrate.

1.Solder is put up before the card wire is removed from connector on
the CD substrate as shown in Figure.
(When the wire is removed without putting up solder, the CD pick-up
assembly might destroy.)

2.Please remove solder after connecting the card wire with
when you install picking up in the substrate.

Front bracket

Feed motor ass’y

FD screw

CD mechanism
control board

Soldering

FD gear

Pickup unit

1-3

KD-SX885

Disassembly method

Removing the front panel unit

(See Fig.1)

1.

Press the release switch and remove the front panel
unit in the direction of the arrow.

Front panel unit

Removing the bottom cover

(See Fig.2,3)

1.

Turn the body upside down.

2.

Insert a screwdriver to the two joints a and two joints
b on both sides of the body and the joint c on the
back of the body, then detach the bottom cover from
the body.

CAUTION:

When disengaging the joint c using a
screwdriver, do not damage or break the
board.

Removing the front chassis (See Fig.4,5)

Prior to performing the following procedure, remove
the bottom cover.

1.

Remove the two screws A attaching the front
chassis.

Fig.1

Joint a

Bottom cover

Joint c

Joint b

Fig. 2

Joint b

Bottom cover

2.

Remove the two screws B on each side of the body.

3.

Release the two joints d and the two joints e on the
sides. remove the front chassis toward the front.

Joint d

Joint d

1-4

B

Front chassis

Fig. 5

Joint e

Joint e

Joint a

A

Joint c

Fig. 3

Front chassis

Fig.4

Removing the heat sink (See Fig.6)

1.

Remove the four screws C attaching the heat sink
on the left side of the body, and remove the heat
sink.

Removing the rear panel (See Fig.7 )

C

C

Heat sink

Fig. 6

KD-SX885

C

Prior to performing the following procedure, remove
the front chassis, the heat sink and bottom cover.

1.

Remove the eight screws D attaching the rear panel
and one screw E attaching the pine jack on the back
of the body.

D

Rear panel

Removing the main amplifier board assembly

(See Fig.8)

Prior to performing the following procedure, remove
the front chassis, the heat sink, bottom cover and the
rear panel.

1.

Remove the two screws F attaching the main
amplifier board assembly on the top cover.

F

CN501

D D

E

D

D

Fig. 7

F

2.

Disconnect connector CN501 on the main amplifier
board assembly from the cassette mechanism
assembly.

Main board assembly

Fig. 8

1-5

KD-SX885

Removing the CD mechanism assembly

CD mechanism assembly

(See Fig.9)

Prior to performing the following procedure, remove
the front chassis, the heat sink, bottom cover and the
main amplifier board assembly.

1.

Remove the three screws G attaching the cassette
mechanism assembly from the top cover.

G

H

Removing the (LCD & key) control switch
board (See Fig.10

Prior to performing the following procedure, remove
the front panel assembly.

~ 12)

G

G

Top cover

Fig. 9

H

1.

Remove the four screws H attaching the rear cover
on the back of the front panel assembly.

2.

Unjoint the nine joints f with the front panel and the
rear cover.

3.

Remove the control switch board on the back of the
front panel.

H

Joint f

Front panel

Joint f

LCD & Key control board

H

Fig. 10

Rear cover

Joint f

Joint f

Fig. 11

1-6

Fig. 12

< CD mechanism section >

Removing the top cover

(See Fig.1 and 2)

1.

Remove the two screws A on each side of the body.

2.

Lift the front side of the top cover and move the
cover backward to release the two joints a.

Removing the connector board

(See Fig.3 to 5)

Top cover

A

KD-SX885

A

Joints a

CAUTION:

1.

Remove the screw B fixing the connector board.

2.

Solder the short-circuit point on the connector board.

Disconnect the flexible wire from the pickup.

3.

Move the connector board in the direction of the
arrow to release the two joints b.

4.

Unsolder the wire on the connector board if
necessary.

CAUTION:

Before disconnecting the flexible wire
from the pickup, solder the short-circuit
point on the pickup. No observance of
this instruction may cause damage of
the pickup.

Unsolder the short-circuit point after
reassembling.

A

Fig.1

Joints a

Top cover

Fig.2

DET switch

B

Flexible wire

Frame

Connector board

B

Connector board

Joints b

Flexible wire

Short-circuit

Fig.3

Fig.4Fig.5

Pickup

Short-circuit point

(Soldering)

Pickup

1-7

KD-SX885

Removing the DET switch

(See Fig.3 and 6)

1.

Extend the two tabs c of the feed sw. holder and pull
out the switch.

2.

Unsolder the DET switch wire if necessary.

Removing the chassis unit

(See Fig.7 and 8)

Prior to performing the following procedure, remove
the top cover and the connector board.

B

Connector board

Joints b

Short-circuit

Fig.3

DET switch

Pickup

1.

Remove the two suspension springs (L) and (R)
attaching the chassis unit to the frame.

CAUTION:

The shape of the suspension spring (L)
and (R) are different. Handle them with
care.

CAUTION:

When reassembling, make sure that the
three shafts on the underside of the
chassis unit are inserted to the dampers
certainly.

Chassis unit

Suspension spring (R)

Suspension spring (L)

Frame

DET switch

Chassis unit

Tab c

Feed sw. holder

Tab c

Fig.6

Shaft

1-8

Suspension spring (R)

Suspension spring (L)

Shafts

Damper

Damper

Damper

Frame

Fig.8Fig.7

Removing the clamper assembly

(See Fig.9 and 10)

KD-SX885

Prior to performing the following procedure, remove
the top cover.

1.

Remove the clamper arm spring.

2.

Move the clamper assembly in the direction of the
arrow to release the two joints d.

Removing the loading / feed motor
assembly (See Fig.11 and 12)

Prior to performing the following procedure, remove
the top cover, the connector board and the chassis
unit.

1.

Remove the screw C and move the loading / feed
motor assembly in the direction of the arrow to
remove it from the chassis rivet assembly.

Clamper arm
spring

Joint d

Joint d

Clamper assembly

Fig.9

Clamper arm spring

Chassis rivet
assembly

Joint d

Clamper assembly

Joint d

2.

Disconnect the wire from the loading / feed motor
assembly if necessary.

CAUTION:

When reassembling, connect the wire
from the loading / feed motor assembly
to the flame as shown in Fig.11.

Chassis rivet assembly

Fig.10

Loading / feed motor assembly

C

Loading / feed motor assembly

Fig.12Fig.11

1-9

KD-SX885

Removing the pickup unit

(See Fig.13 to 17)

Prior to performing the following procedure, remove
the top cover, the connector board and the chassis
unit.

1.

Remove the screw D and pull out the pu. shaft
holder from the shaft.

2.

Remove the screw E attaching the feed sw. holder.

3.

Move the part e of the pickup unit upward with the
shaft and the feed sw. holder, then release the joint f
of the feed sw. holder in the direction of the arrow.
The joint g of the pickup unit and the feed rack is
released, and the feed sw. holder comes off.

4.

Remove the shaft from the pickup unit.

5.

Remove the screw F attaching the feed rack to the
pickup unit.

Reattaching the pickup unit

(See Fig.13 to 16)

Joint f

Shaft

D

Joint e

Pu. shaft holder

Feed sw. holder

Pickup unit

Fig.13

Pickup unit

E

Joint f

Joint e

1.

Reattach the feed rack to the pickup unit using the
screw F.

2.

Reattach the feed sw. holder to the feed rack while
setting the joint tab g to the slot of the feed rack and
setting the part f of the feed rack to the switch of the
feed sw. holder correctly.

3.

As the feed sw. holder is temporarily attached to the
pickup unit, set to the gear of the joint g and to the
bending part of the chassis (joint h) at a time.

CAUTION:

4.

Reattach the feed sw. holder using the screw E.

5.

Reattach the shaft to the pickup unit. Reattach the
pu. shaft holder to the shaft using the screw D.

Make sure that the part i on the underside
of the feed rack is certainly inserted to the
slot j of the change lock lever.

F

Feed rack

Feed rack

E

Joint g

Feed sw. holder

Part i

Pickup unit

Slot j

Joint g

Feed sw. holder

Fig.14

Shaft

Joint f

Joint h

Fig.15

D

Pu. shaft holder

Pickup unit

1-10

Pickup unit

Feed rack

Joint f

Feed sw. holder

Fig.17Fig.16

Removing the trigger arm

(See Fig.18 and 19)

Prior to performing the following procedure, remove
the top cover, the connector board and the clamper
unit.

1.

Turn the trigger arm in the direction of the arrow to
release the joint k and pull out upward.

KD-SX885

Joint k

Trigger arm

CAUTION:

When reassembling, insert the part l and

m of the trigger arm into the part n and
o at the slot of the chassis rivet

assembly respectively and join the joint
k at a time.

Chassis rivet assembly

Chassis rivet assembly

Trigger arm

Fig.18

Part n

Part o

Part l

Part m

Fig.19

Removing the top plate assembly

(See Fig.20)

Prior to performing the following procedure, remove
the top cover, the connector board, the chassis unit,
and the clamper assembly.

1.

Remove the screw H.

2.

Move the top plate assembly in the direction of the
arrow to release the two joints p.

3.

Unsolder the wire marked q if necessary.

H

Top plate assembly

Joints p

q

Fig.20

1-11

KD-SX885

Removing the select arm (L) / select lock
arm (See Fig.21 and 22)

Prior to performing the following procedure, remove
the top plate assembly.

1.

Bring up the select arm (L) to release from the link
plate (joint r) and turn in the direction of the arrow to
release the joint s.

2.

Unsolder the wire of the select arm (L) marked q if
necessary.

3.

Turn the select lock arm in the direction of the arrow
to release the two joints t.

The select lock arm spring comes off the select lock
arm at the same time.

Reassembling the select arm (L) / select
lock arm (See Fig.23 to 25)

Select arm (R)

Joint z

Link plate spring

Top plate

Joint a'

Joint y

Link plate

Joint z

Joint s

Fig.21

Select lock arm

Select lock arm

Joint b'

Joint r

Select arm (L)

Select lock arm

q

Top plate

Hook u

Select lock
arm spring

Joints t

REFERENCE:

1.

Reattach the select lock arm spring to the top plate

Reverse the above removing procedure.

and set the shorter end of the select lock arm spring
to the hook u on the top plate.

2.

Set the other longer end of the select lock arm spring
to the boss v on the underside of the select lock arm,
and join the select lock arm to the slots (joint t). Turn
the select lock arm as shown in the figure.

3.

Reattach the select arm (L) while setting the part r to
the first peak of the link plate gear, and join the joint
s.

CAUTION:

When reattaching the select arm (L),
check if the points w and x are correctly
fitted and if each part operates properly.

Joint r

Link plate

Link plate

Select lock arm spring

Boss v

Select arm (R)

Joint a'

Fig.22

Hook u

Joint t

Joint t

Select lock arm

Fig.23

Link plate spring

Select arm (L)

Joint b'

1-12

Joint r

Fig.25Fig.24

Joint s

Select
lock arm

Point x

KD-SX885

Removing the select arm (R) / link plate

(See Fig.21 and 22)

Prior to performing the following procedure, remove
the top plate assembly.

1.

Bring up the select arm (R) to release from the link
plate (joint y) and turn as shown in the figure to
release the two joints z and joint a’.

2.

Move the link plate in the direction of the arrow to
release the joint b’. Remove the link plate spring at
the same time.

REFERENCE:

Before removing the link plate, remove
the select arm (L).

Reattaching the Select arm (R) / link
plate (See Fig.25 and 26)

REFERENCE:

Reverse the above removing procedure.

Select arm (R)

Joint z

Link plate spring

Top plate

Joint a'

Part y

Link plate

Joint z

Joint s

Fig.21

Select lock arm

Select lock arm

Joint b'

Joint r

Select arm (L)

Select lock arm

q

Top plate

Hook u

Select lock
arm spring

1.

Reattach the link plate spring.

2.

Reattach the link plate to the link plate spring while
joining them at joint b’.

3.

Reattach the part y of the select arm (R) to the first
peak of the link plate while joining the two joints z
with the slots. Then turn the select arm (R) as shown
in the figure. The top plate is joined to the joint a’.

CAUTION:

When reattaching the select arm (R),
check if the part c’ is correctly fitted and
if each part operates properly.

Select arm (R)

Joint z

Link plate

Link plate spring

Joint a'

Part y

Part y

Fig.22

Joint b'

Joint z

Fig.25

Joints t

Select arm (L)

Select
lock arm

Point x

Fig.26

Link plate

1-13

KD-SX885

Removing the loading roller assembly

(See Fig.27 to 29)

Prior to performing the following procedure, remove
the clamper assembly and the top plate assembly.

1.

Push inward the loading roller assembly on the gear
side and detach it upward from the slot of the joint d’
of the lock arm rivet assembly.

Detach the loading roller assembly from the slot of
the joint e’ of the lock arm rivet assembly.

The roller guide comes off the gear section of the
loading roller assembly.

Remove the roller guide and the washer from the
shaft of the loading roller assembly.

2.

Remove the screw I attaching the lock arm rivet
assembly.

3.

Push the shaft at the joint f’ of the lock arm rivet
assembly inward to release the lock arm rivet
assembly from the slot of the slide plate. Extend the
lock arm rivet assembly outward and release the
joint g’ from the boss of the chassis rivet assembly.
The roller guide springs on both sides come off.

Roller guide

Washer

Loading roller assembly

Roller guide

Joint e'

Roller guide spring

Roller guide spring

Joint d'

Loading roller assembly

Roller guide spring

Lock arm rivet assembly

Fig.27

Loading roller assembly

Roller guide
spring

CAUTION:

When reassembling, reattach the left
and right roller guide springs to the lock
arm rivet assembly before reattaching
the lock arm rivet assembly to the
chassis rivet assembly. Make sure to fit
the part h’ of the roller guide spring (L)
inside of the roller guide (Refer to
Fig.30).

Roller guide

Washer

Roller shaft assembly

Joint h'

Loading roller assembly

Roller guide
spring

Fig.28-1

Fig.28-2

Chassis rivet assembly

Boss

Slide plate

Roller guide spring

I

1-14

Frame

Loading roller

Roller guide spring

Lock arm rivet assembly

Joint f'

Part g'

Fig.29Fig.30

KD-SX885

Removing the loading gear (5), (6) and
(7) (See Fig.31 and 32)

Prior to performing the following procedure, remove
the top cover, the chassis unit and the top plate
assembly.

1.

Remove the screw J attaching the loading gear
bracket. The loading gear (6) and (7) come off the
loading gear bracket.

2.

Pull out the loading gear (5).

Loading gear bracket

J

Loading gear (6)

Loading gear (5)

Loading gear (3)

Fig.31

J

Loading gear bracket

Loading gear (5)

Loading gear (6)

Loading gear (7)

Fig.32

1-15

KD-SX885

Removing the gears (See Fig.33 to 36)

Prior to performing the following procedure, remove
the top cover, the chassis unit, the top plate
assembly and the pickup unit.

1.

Pull out the feed gear.

Slot j'

Slide plate

2.

Move the loading plate assembly in the direction of
the arrow to release the slide plate from the two slots
j’ of the chassis rivet assembly.

3.

Detach the loading plate assembly upward from the
chassis rivet assembly while releasing the joint k’.
Remove the slide hook and the loading plate spring
from the loading plate assembly.

4.

Pull out the loading gear (2) and remove the change
lock lever.

5.

Remove the E-washer and the washer attaching the
changer gear (2).

6.

The changer gear (2), the changer gear spring and
the adjusting washer come off.

7.

Remove the loading gear (1).

8.

Move the hang plate rivet assembly in the direction
of the arrow to release from the three shafts of the
chassis rivet assembly upward.

9.

Detach the loading gear plate rivet assembly from
the shaft of the chassis rivet assembly upward while
releasing the joint l’.

Feed gear

Change plate
rivet assembly

Shafts

E-washer

Loading plate assembly

Joint k'

Slot j'

Fig.33

Joint l'

Loading gear (4)

Loading gear plate
rivet assembly

Loading gear (2)

Loading gear (1)

Change gear (2)

10.

Pull out the loading gear (4).

Loading plate assembly

Loading plate spring

Chassis rivet assembly

1-16

Slot j'

Joint k'

Slide hook

Slide plate

Slot j'

E-washer

Washer

Loading gear (2)

Loading plate spring

Adjusting washer

Change plate
rivet assembly

Chassis rivet assembly

Fig.34

Loading gear (1)

Loading gear (2)

Change lock lever

Loading gear (4)

Loading gear plate rivet assembly

Fig.36Fig.35

KD-SX885

Removing the turn table / spindle motor

(See Fig.37 and 38)

Prior to performing the following procedure, remove
the top cover, the connector assembly and the
chassis / clamper assembly.

1.

Remove the two screws K attaching the spindle
motor assembly through the slot of the turn table on
top of the body.

2.

Unsolder the wire on the connector board if
necessary.

K

Turn table

Fig.37

K

Turn table

Spindle motor

Fig.38

1-17

KD-SX885

Adjustment method

Test instruments required 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.Test disc(CTS-1000)

8.Extension cable for check
EXTGS004-22P

Standard measuring conditions
Power supply voltage DC 14.4V(11V to 16V allowance)
Load impedance 4 (4 to 8 allowance)
Line-out Level/Impedance
: 2.0 V/20k load(full scale)
Output impedance : 1k

Standard volume position
Balance and Bass & Treble volume : Indication "0"
Loudness : OFF

Frequency Band
FM 87.5kHz - 108.0 kHz

531kHz - 1602kHz

AM

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 workingo
standard.

How to connect the extension cable for adjusting

CN501

CD Mechanism

Extension cables

EXTGS004-22P

1-18

Front panel ass'y

Flow of functional operation unit TOC read

Power ON

When the pickup correctly moves

v

to the inner area of the disc

Set Function CD

KD-SX885

When the laser diode correctly

emits

Microprocessor
commands

FMO
TC94A14FA" 40"

FEED MOTOR
+TERMINAL
IC561"4"

REST SW

When correctly focused

FEO
TA2157" 15"

Focus Servo Loop ONo

$83

$82

$81

3.3V
Hi-Z
0V

6V
4V
2V

OFF

ON

Pickup feed to the inner area

2.2V

RF signal eye-patternn
remains closed

RF signal eye-pattern
opens

Disc inserted

YES

Laser emitted

Focus search

Disc rotates

Tracking loop closed

TOC read out

YES

Microprocessor
commands

SEL
TC94A14FA"38"

LD
CN501"15"

"No disc"
display

When the disc correctly rotates

Microprocessor
commands

DMO
TC94A14FA"41"

Spindle
motor(-)
IC561"1"

$84 $86 $ A200

Acceleration Servo CLV

Rough
Servo

0.5 Sec 0.5 Sec

$84

3.3V
0V

4V

0V

3.3V

2.2V
0V

6V

3.2
2V

Jump to the first track

Play

Tracking Servo Loop ON

RF signal

Rough Servo Modev

CLV Servo Mode
(Program Area)

CLV Servo Mode
(Lead-In Area;
Digital :0)

1-19

KD-SX885

Feed section

Is the voltage output at
IC521 pin "40" 5V or 0V?

Is 4V present at both
sides of the feed motor?

YES

YES

NO YES NO

NO

Is the wiring for IC521

(56)~(64) correct?

NO

Is 6V or 2V present at

IC561 "4" and "5"?

NO

Is 3.3V present at IC561

pin "20"?

Check the vicinity of

IC521.

YES

Check the feed motor

connection wiring.

YES

Check CD 8V

and 5V.

Check the feed motor.

Focus section

When the lens is

moving:

4V

Does the S-search

waveform appear at

IC561 pins "8" and "9"?

Spindle section

Is the disk rotated?

YES

Does the RF signal

appear at TP1?

YES

Is the RF waveform at TP1

distorted?

YES

Proceed to the Tracking

section

Check IC561.

NO

YES

NO

NO

NO

Check the circuits in
the vicinity of IC561
pins "8","9"and"15".

Check the pickup and

its connections

Is 4V present at IC561

pins "6" and "7"?

Check the spindle motor

and its wiring

Check the circuits in the

vicinity of IC501 "19"~

"24" or the pickup

YES

YES

NO

Is 4V present at IC521

pins "41" ?

Check the vicinity of

IC561.

NO

YES

Check IC521 and

IC501.

Tracking section

1-20

When the disc is rotated

at first:

Approx. 1.2V

Is the tracking error signal

output at IC501 "11"?

YES

Check IC521.

YES YES

Check the circuit in the

vicinity of IC501 pins

"2"~"12".

Check the pickup and

its connections

Maintenance of laser pickup

(1) Cleaning the pickup lens
Before you replace the pickup,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:amplitude
of eye patterrn) will be low.

KD-SX885

Is RF output

1.3 0.4Vp-p?

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.

NO

Replace it.

Replacement of laser pickup

Turn of the power switch and, disconnect the
power cord.

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.

1-21

KD-SX885

Description of major ICs

UPD784214AGC149 (IC701) : MAIN CPU

1.Pin layout

75 51

76

50

100

125

26

Pin No. Symbol I/O 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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

NC
NC
SW2
PSW
LM
MOTOR SEL
NC
ANT CONT
VDD
X2
X1
VSS
XT2
XT1
RESET
SW1
BUSINT
PS2
NC
NC
NC
REMOCON
AVDD
AVREF0
VOL1
VOL2
KEY0
KEY1
KEY2
LEVEL
PULL DOWN
SM
AVSS
NC
NC
AVRE F
BUSSI
BUSSO
BUSSCK
BUSI/O
LCDDA
LCDCK
LCDCE
BUZZER
NC
NC
NC
OPEN
NC
NC

O

Non connected

O

Non connected

I

Detection switch of CD mechanism

I

CD mecha position setting SW

O

Loading motor control signal output

O

Loading /feed motor selecting output

O

Non connected

O

Antenna remote output

-

5V connection

-

Sub-clock 32.738MHz

I

Sub-clock 32.738MHz

-

GND connection

-

Sub-clock 12.5MHz

I

Sub-clock 12.5MHz

I

Reset detection terminal

I

Detection switch of CD mechanism

I

J-BUS signal interrupt input

I

POWER SAVE2 BACK UP synchronization. It is H input and stop mode.

O

Non connected

O

Non connected

O

Non connected

I

Remote control signal input

-

5V connction

-

5V connection

I

Input for rotation volume detection pulse judgment to relation V1

I

Input for rotation volume detection pulse judgment to relation V2

I

Key control signal input 0

I

Key control signal input 1

I

Key control signal input 2

I

Level meter input

I

Pul down

I

S.METER level input

-

GND connection

O

Non connected

O

Non connected

-

5V connection

I

J-BUS data input

O

J-BUS data output

I/O

J-BUS clock I/O

I/O

J-BUS data I/O terminal.

O

Data output for LCD driver.

O

Clock output for LCD driver.

O

Chipenable output to LCD driver

O

Buzzer output

O

Non connected

O

Non connected

O

Non connected

O

CD tray open control signal output

O

Non connected

O

Non connected

UPD784214AGC149(1/2)

1-22

Pin No. Symbol I/O Function

51
52
53

NC
NC
SD/ST

Non connected

O

Non connected

O

Station detector and stereo signal input.

I

It is H and there is a bureau.It is L and a stereo.
54
55

NC
MONO

Non connected

O

Monaural ON/OFF switch output.

O

At the time of the MONO ON :H.
56
57
58
59
60
61

NC
NC
NC
NC
NC
DETACH

Non connected

O

Non connected

O

Non connected

O

Non connected

O

Non connected

O

Detach signal input. It is L of 200ms or more and an

I

operatio mode. H:POWER SAVE
62
63
64
65
66
67
68
69
70

NC
SEEK/STOP
NC
FM/AM
PLLCE
PLLDA
PLLCLK
PLLDI
TELMUTE

Non connected

O

Auto seek stop switch output. At SEEK:H. At STOP:L

O

Non connected

O

FM,AM switch output

O

CE output for IC control for PLL

O

Data output for IC control for PLL

O

Clock output for IC control PLL

O

Data input for IC control for PLL

I

Telephone mute detection input.

I

It is L or H and MUTE(ACTIVE depends on the PSM setting)
71
72
73
74

NC
VSS
DIMIN
PS1

Non connected (ex:AMP-KILL output)

O

GND connection

­Dimmer detection input. At L:dimmer ON.

I

POWER SAVE 1. ACC and syschronization

I

POWER SAVE : L. At operation:H

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

POWER
CDON
MUTE
NC
NC
NC
VDD
NC
VOLDA
VOLCL
EVOLCE
SUB.MUTE
SUB.CE
NC
STAGE2
STAGE1
BUCK
CCE
RST
TEST
BUS0
BUS1
BUS2
BUS3
NC
CD-RW

O
O
O
O
O
O

-

O
O
O
O
O
O
O

I

I
O
O
O

­I/O
I/O
I/O
I/O

O

-

POWER ON/OFF switch outut. At POWER ON:H
The CD power supply control signal output. At CD :H
Mute output. At mute ON:L
Non connected
Non connected
Non connected
5V connection
Non connect
Data output by which IC for electronic volume is controlled
Clock output by which IC for electronic volume is controlled
E-volume output
Mute control putput for subwoofer
CE output for subwoofer
Non connected
L: for 780J H: for 8250J
H:For 991R / L:For 911R
Clock output for data communication with CDLSI
CE output for data communication with CDLSI
CDLSI reset signal output
connects GND with 10k pull down (For flash switch)
Data communication input output port 0 with CDLSI
Data communication input output port 1 with CDLSI
Data communication input output port 2 with CDLSI
Data communication input output port 3 with CDLSI
Non connected
RF gain control L=CD-RW, H= CD-DA

KD-SX885

UPD784214AGC149(2/2)

1-23

KD-SX885

HA13164 (IC961) : Regulator

1.Pin layout

EXT OUT

ANT OUT

ACC IN

1 2 3 4 5 6 7 8 9 10111213 1415

2.Block diagram

VDD5V

SW5V

ACC5V

ANT CTRL

MEMORY IN

BATT DET9VCTRL

CD8VAJ10V

GND

3.Pin function

11

12

10

8

2

1

7

Surge Protector

BIAS TSD

15

3

note1) TAB (header of IC)

connected to GND

13

9

6

4

5

14

UNIT R:

C:F

1-24

Pin No. Symbol Function

1
2

EXT OUT
ANT OUT

Output voltage is VCC-1 V when M or H level applied to CTRL pin.
Output voltage is VCC-1 V when M or H level to CTRL pin and H level

to ANT-CTRL.
3
4
5
6
7
8
9

10
11
12
13
14
15

ACC IN
VDD 5V
SW5V
ACC5V
ANT CTRL
MEMORY IN
BATT DET
9V
CTRL
CD8V
AJ
10V
GND

Connected to ACC.

Regular 5.7V.

Output voltage is 5V when M or H level applies to CTRL pin.

Output for ACC detector.

L:ANT output OFF , H:ANT output ON

Connected to VCC.

Low battery detect.

Output voltage is 9V when M or H level applied to CTRL pin.

L:BIAS OFF, M:BIAS ON, H:CD ON

Output voltage is 8V when H level applied to CTRL pin.

Adjustment pin for ILM output voltage.

Output voltage is 10V when M or H level applies to CTRL pin.

Connected to GND.

HD74HC126FP-X (IC771) : Buffer

KD-SX885

1.Terminal layout

1C

1

1A

2
3

1Y

4

2C

5

2A

6

2Y

GND

2.Block diagram

7

Input

Vcc

14

3C

13
12

3A

11

3Y

10

4C

9

4A

8

4Y

Vcc Vcc

1A
2A
3A
4A
1C
2C
3C

See Function Table

4C

3.Pin function

Output

1Y

Output

2Y

Output

3Y

Output

4Y

Input Output

C

A

L

X

H

L

H

H

Note:

1k

CL

Sample as Load Circuit 1

Sample as Load Circuit 1

Sample as Load Circuit 1

Y
Z
H
L

H : High
L : Low
X : H and L
Z : H.L.X

S1

1k

IC-PST600M/G/-W (IC702) : System reset

Co1

OP1

1

3

2

IN

OUT

GND

1-25

KD-SX885

LA47503 (IC351) : Power amp.

1.Terminal layout

206

11

1

12

4

10

Stand by

Switch

Ripple

Filter

Protective

circuit

Mute

circuit

9

7

8

5

3

2

22

1-26

15

25

13

14

16

Muting &

On Time Control

Circuit

protective

circuit

17

19

18

21

23

24

2.Terminal layout

AC CONT1

GND1

OUTFR-

STBY

OUTFR+

Vcc1/2

OUTRR-

GND2

OUTRR+

VREF

INRR

INFR

SGND

INFL

INRL

ONTIME

OUTRL+

GND3

OUTRL-

Vcc3/4

OUTFL+

MUTE

OUTFL-

GND4

KD-SX885

NC

3.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

SymbolPin No. Function

AC CONT1
GND1
OUTFR­STBY
OUTFR+
Vcc1/2
OUTRR­GND2
OUTRR+
VREF
INRR
INFR
SGND
INFL
INRL
ONTIME
OUTRL+
GND3
OUTRL­Vcc3/4
OUTFL+
MUTE
OUTFL­GND4
NC

Header of IC
Power GND
Outpur(-) for front Rch
Stand by input
Output (+) for front Rch
Power input
Output (-) for rear Rch
Power GND
Output (+) for rear Rch
Ripple filter
Rear Rch input
Front Rch input
Signal GND
Front Lch input
Rear Lch input
Power on time control
Output (+) for rear Lch
Power GND
Output (-) for rear Lch
Power input
Output (+) for front
Muting control input
Output (-) for front
Power GND
No connection

LA47503

1-27

KD-SX885

TC94A14FA (IC521) : DSP&DAC

1.Terminal layout & block daiagram

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

48 47 46 45 44 43 42 41 40 39

Clock

LPF

generator

Micro-

controller

interface

1-bit
DAC

Audio out

circuit

Address

circuit

circuit

Correction

Digital
output

16 k

RAM

PWM

Servo
control

ROM

RAM

CLV servo

Synchronous

guarantee

EFM

decoder

Sub code

decoder

38 37 36 35 34 33

D/A

A/D

Digital equalizer

automatic

adjustment circuit

Data

slicer

VCO

PLL

TMAX

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

64

2.Pin function

Pin

Symbol I/O Descroption

No

1

BCK

2

LRCK

O

Bit clock output pin.32fs,48fs,or 64fs selectable by command.

O

L/R channel clock output pin."L" for L channel and "H" for R channel. Output polarity
can be inverted by command.

3

AOUT

4

DOUT

5

IPF

O

Audio data output pin. MSB-first or LSB-first selectable by command.

O

Digital data output pin.Outputs up to double-speed playback.

O

Correction flag output pin. When set to "H", AOUT output cannot be corrected by C2
correction processing.

6

V
7
8
9

10
11
12
13
14
15

DD3

VSS3

SBOK
CLCK

DATA
SFSY
SBSY

HSO
UHSO
PVDD3

-

Digital 3.3V power supply voltage pin.

-

Digital GND pin.

O

Subcode Q data CRCC result output pin. "H" level when result is OK.

O

Subcode P-W data read I/O pin. I/O polarity selectable by command.

O

Subcode P-W data output pin.

O

Playback frame sync signal output pin.

O

Subcode block sync signal output pin. "H" level at S1 when subcode sync is detected.

I/O

General-purpose input / output pins.
Input port at reset.

-

PLL-only 3.3V power supply voltage pin.

17

161514131211101 2 3 4 5 6 7 8 9

1-28

Pin

Symbol I/O Description

No

16
17

PDO

TMAX

EFM and PLCK phase difference signal output pin.

O

TMAX detection result output pin.

O

KD-SX885

TC94A14FA

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
51
52
53
54
55
56
57
58
59
60
61
62
63
64

LPFN
LPFO

REF

PV
VCOF
AV

SS3

SLCO

RFI

AV

DD3

RFCT

RFZI

RFRP

FEI

SBAD

TEI
TEZI
FOO

TRO

V

REF

RFGC

TEBC

SEL

AV

DD3

FMO
DMO
V

SS3

V

DD3

TESIN

SS3

XV

XI

XO

XV

DD3

DV

SS3R

RO

DV

DD3

DVR

LO

DV

SS3L

ZDET
VSS5
BUS0
BUS1
BUS2
BUS3
BUCK

/CCE
/RST
V

DD5

TMAX Detection Result
Longer than fixed period

Within fixed period
Shorter than fixed period

Inverted input pin for PLL LPF amp.

I

Output pin for PLL LPF amp.

O

REF

PLL-only V

­VCO filter pin.

O

Analog GND pin.

­DAC output pin for data slice level generation.

O

RF signal input pin. Zin selectable by command.

I

Analog 3.3V power supply voltage pin.

­RFRP signal center level input pin.

I

RFRP signal zero-cross input pin.

I

RF ripple signal input pin.

I

Focus error signal input pin.

I

Sub-beam adder signal input pin.

I

Tracking error input pin. Inputs when tracking servo is on.

I

Tracking error signal zero-cross input pin.

I

Focus equalizer output pin.

O

Tracking equalizer output pin.

O

Analog reference power supply voltage pin.

­RF amplitude adjustment control signal output pin.

O

Tracking balance control signal output pin.

O

APC circuit ON/OFF signal output pin. At laser on, high impedance with UHS="L",

O

pin.

TMAX Output

DD3

"PV

"

"HiZ"

SS3

"AV

"

H output with UHS="H".
Analog 3.3V power supply voltage pin.

­Feed equalizer output pin.

O

Disc equalizer output pin.

O

Digital GND pin.

­Digital 3.3V power supply voltage pin.

­Test input pin. Normally, fixed to "L".

I

System clock oscillator GND pin.

­System clock oscillator input pin.

I

System clock oscillator output pin.

O

System clock oscillator 3.3V power supply voltage pin.

­DA converter GND pin.

­R-channel data forward output pin.

O

DA converter 3.3V power supply pin.

­Reference voltage pin.

­L-channel data forward output pin.

O

DA converter GND pin.

­1 bit DA converter zero detection flag output pin.

O

Microcontroller interface GND pin.

-

Microcontroller interface data I/O pins.

I/O

Microcontroller interface clock input pin.

I

Microcontroller interface chip enable signal input pin.At "L", BUS0 to BUS3 are active.

I

Reset signal input pin. At reset, "L".

I

Microcontroller interface 5V power supply pin.

-

1-29

KD-SX885

LC75412W(IC301):E.VOLUME

1.Terminal layout & block daiagram

48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

47k

1M

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

LVref

LVref

LVref

RVref

RVref

RVref

LVref

RVref

Multiplexer

Multiplexer

CONTROL
CIRCUIT

ZERO CROSSDET

LOGIC CIRCUITVA

ZERO CROSSDET

LVref

CCB

INTERFACE

NO SIGNAL

TIMMER

RVref

2.Function

Pin No.

54
53
52
51
55
59
60
61
62
58
50
49
63
64
48

1

46

3

47

2

91011121314151612345678

Symbol Function

L1

Single end input terminal
L2
L3
L4
L6

R1
R2
R3
R4
R6

L5M

Differential motion input terminal

L5P

R5M

R5P

LSELO

Input selector output terminal

RSELO

LCT

RCT

LVRIN

Then terminal for roudness.CR for a high region amends is connected for LCT(RCT) and

LVRIN(RVRIN),and CR for a low region amends is connected between LCT(RCT) and GND.

Volume + equalizer input terminal.

RVRIN

1-30

Pin No.

42
41
40

7
8

9
36
35
34
13
14
15
45
44
43
39
38
37
21
10
11
12

5

4

6
28
33
16
32
17
31
30
18
19
57

56
27
29
22
23

20
26
25
24

Symbol Function
LF1C1

LF1C2

The capacitor connection terminal of the filter composition for the F1 stap of the equalizer.
LF1C1(RF1C1)~LF1C2(RF1C2),Connect the capacitor for LF1C2(RF1C2)~LF1C3(RF1C3).

LF1C3
RF1C1
RF1C2
RF1C3

LF3C1

LF3C2

LF3C3

Capacitor connection terminal of filter composition for F3 strap of equalizer.
Connect the capacitor for LF3C1(RF3C1)~ LF3C2(RF3C2)

LF3C2(RF3C2)~LF3C3(RF3C3).
RF3C1
RF3C2
RF3C3

NC

TEST

LTOUT

No connected

The terminal only fot the test of LSI.Connects with GND and uses usually.

Equalizer output terminal.

RTOUT

LFIN

RFIN
LFOUT
LROUT

RFOUT

The fader block input terminal.
Drive by low impedance.
The fader output terminal.A rear reception desk side / side can be separately narrowed
respectively.
L/R of the amount of attenuation is the same.

RROUT

Vref

VDD/2voltage generation part.
Connect the capacitor of about several 10 F as a counter measure for ripple of power
supply between Vref~AVSS for (VSS).

VDD

DVSS

LAVSS

Power supply terminal.
System logic grand terminal.
Analog grand terminal.

RAVSS

MUTE

External control mute terminal.
When this terminal is made VSS level,fader volume block is set in compulsory-

TIM

CL

Timer terminal at no signal of 0 crossing circuit.
Cereal data and clock input terminal for control.

DI

CE

chip enable terminal.
[H]data is written in an internal latch in the timing which becomes [L]and an analog
each switch moves.[H] The data transfer becomes enable at the level.

KD-SX885

LC75412W

1-31

KD-SX885

LC75873NW (IC601) : LCD Driver

1.Pin layout

60 41

61

80

1 20

3.Pin function

Pin No.

79,80
1 to 66

67
68
69

40

21

Pin name

DIMMER,S1
S2 to S66

COM1
COM2
COM3

2.Block diagram

VDD1

VDD2

INH

OSC

VDD

VSS

I/O

O

O

S5

S4/P4

S3/P3

S2/P2

COM2

COM3

COMON
DRIVER

CLOCK

GENERATOR

COM1

S68

S67

DI

CL

SEGMENT DRIVER

SHIFT REGISTOR

ADDRESS

DETECTOR

CE

S1/P1

Description

Segment outouts for displaying the display data
transferred by serial data input.
The S1/P1 to S4/P4 pins can be used as general­purpose output ports under serial data control.

Common driver outputs.
The frame frequency f0 is given by :
f0 = (FOSC/384)Hz.

74

76
77
78

75

71

72

70

OSC

CE
CL
DI

INH

VDD1

VDD2

VDD

I/O

I
I
I

I

I

I

-

Oscillator connection
An oscillator circuit is formed by connecting an
external resistor and capacitor to this pin.

Serial data transfer inputs.
Connected to the controller.
CE:Chip enable
CL:Synchronization clock
DI:Transfer data

Display off control input
INH= "L"(VSS) Display forced off

S1/P1 to S4/P4 = "L"
(These pins are forcibly set to the
segment output port function and held
at the low level.)
S5 to S68 = "L"
COM1 to COM3"L"

INH = "H"(HDD) Display on
However, serial data transfer is possible when
the display is forced off by this pin.

Used for applying the LCD drive 2/3 bias voltage
externally. Must be connected to VDD2 when a
1/2 bias drive scheme is used.

Used for applying the LCD drive 1/3 bias voltage
externally. Must be connected to VDD1 when a
1/2 bias drive scheme is used.

Power supply connection.
Provide a voltage of between 3.0 and 6.0V.

1-32

73

VSS

Power supply connection. Connect to ground.

-

TB2118F-X (IC21) : PLL

1.Terminal Layout

2423222120191817161514

KD-SX885

13

2.Block diagram

osc

2

1

XO

24

XI

FM IN

AMIN

IFC

DIN

CK

DOUT

CE

15

16

13

3

4

5

6

123456789

Buff.

ON/OFF

OSC circuit

AMP

AMP

AMP

Serial

Interface

101112

Reference Counter

Prescaler

20-bit BINARY COUNTER

Resistor 1
Resistor 2

I/O PORT

Phase

Comparator

4-bit

Swallow counter

12-bit

Programmable counter

22-bit

40bit shift register

OUTPUT PORT

Constant

power supply voltage

switch

Vdd

switch

Vcc

AM CP.

20

­+

+

-

RF

22

19

vt

18

FM cp

3.Pin Function

Pin

Symbol I/O Function

No.

XOUT

10
11
12

1
2
3
4
5
6
7
8
9

OSC

CE

DI

CK

DOUT

SR
I/O1
I/O2

OUT1
OUT2
VDD2

Crystal oscillator pin

O

Non connect

­Chip enable input

I

Serial data input

I

Clock input

I

Serial data output

O

Register control pin

O

I/O ports

I/O

I/O ports

I/O

Non connect

­Non connect

­Single power supply for REF. frequency block

-

7

SR

8

9

I/O -2I/O -1

10 11

12

out-2out-1

vdd2

Pin

Symbol I/O Function

No.

IFC

13

VDD

14

FMIN

15

AMIN

16

DGND

17

FMCP

18

VT

19

AMCP

20

VCC

21

RF

22

AGND

23

XIN

24

17

14

IF signal input

I

Power pins for digital block

­FM band local signal input

I

AM band local signal input

I

Connect to GND (for digital circuit)

­Charge pump output for FM

O

Tuning voltage biased to 2.5V.

­Charge pump output for AM

O

Power pins for analog block

­Ripple filter connecting pin

I

Connect to GND (for analog circuit)

­Crystal oscillator pin

I

21

23

a-gnd

vccd-gndvdd

1-33

KD-SX885

TA2157FN-X (IC501) : RF amp

1.Terminal layout

2.Block diagram

24 ~ 13

1 ~ 12

13

14

15

16

17

18

19

20

21

10pF

40k30k

20k 20k

20k

20k

BOTTOM

15k

50 A

12k

12k

PEAK

20k

20k

20k

PEAK

1.3V

40k

240k

15pF

240k

15pF

40k

50k

2k

20k

50k

14k

K

1

15k

x0.5
x2

x0.5
x2

1k

2k

1.75k

10pF

12

11

10

9

8

7

6

5

4

1-34

22

23

24

PIN SEL

VCTRLPIN

VCC

HiZ

GND

3k

3k

(APC SW)

APC ON

APC ON

APC OFF
(LDO=H)

180k

40pF

TEB

(TE BAL)

-50%

0%

+50%

180k

40pF

60k

60k

94k

22k

94k

22k

RFGC

(AGC Gian)

+12dB

+6dB

0dB

3

2

1

TEB

(TE BAL)

Normal mode

(0dB)

Normal mode

(0dB)

CD-RW mode

(+12dB)

3.Pin function

Pin No. Symbol I/O Function

1

VCC

2

FNI

3

FPI

4

TPI

5

TNI

6

MDI

7

LDO

8

SEL

-

3.3V power supply pin

I

Main-beam amp input pin

I

Main-beam amp input pin

I

Sub-beam amp input pin

I

Sub-beam amp input pin

I

Monitor photo diode amp input pin

O

Laser diode amp output pin

I

APC circuit ON/OFF control signal, laser diode (LDO) control signal input
or bottom/peak detection frequency change pin.

KD-SX885

TA2175FN-X

9

10
11

12
13

TEBC

TEN
TEO

RFDC
GVSW

SEL
GND

Hiz
VCC

I

Tracking error balance adjustment signal input pin

APC
circuit

LCD

OFF Connected VCC through 1k resistor
ON

Control signal output

ON Control signal output

Adjusts TE signal balance by ellminating carrier component from PWM
signal (3-state output,PWM carrier = 88.2kHz) output from TC94A14F/FA
TEBC pin using RC-LPF and inputting DC.
TEBC input voltage:GND~VCC

I

Tracking error signal genaration amp negative-phase input pin

O

Tracking error signal generation amp output pin.
Combining TEO signal RFRP signal with TC94A14F/FA configures tracking
search system.

O

RF signal peak detection output pin

I

AGC/FE/TE amp gain change pin

GVSW Mode
GND
Hiz

CD-RW
Normal

VCC

14

15
16
17

18
19
20

21
22
23
24

VRO

FEO
FEN
RFRP

RFRPIN
RFGO
RFGC

AGCIN
RFO
RFN
GND

O

Reference voltage (VRO) output pin
VRO=1/2VCC When VCC=3.3V

O

Focus error signal generation amp output pin

I

Focus error signal generation amp negative-phase input pin

O

Signal amp output pin for track count
Combining RFRP signal and TEO signal with TC94A14F/FA configures
tracking search system.

I

Signal generation amp input pin for track count

O

RF signal amplitude adjustment amp output pin

I

RF amplitude adjustment control signal input pin
Adjusts RF signal amplitude by eliminating carrier component from PWM
signal (3-state output,PWM carrier=88.2kHz)output fromTC94A14F/14FA
RFGC pin using RC-LPF and inputting DC.
RFGC input voltage:GND~VCC

I

RF signal amplitude adjustment amp input pin

O

RF signal generation amp output pin

I

RF signal generation amp input pin

-

GND pin

1-35

KD-SX885

VICTOR COMPANY OF JAPAN, LIMITED

MOBILE ELECTRONICS DIVISION
PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan

(No.49735)

200204