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5

All preset contents are reset to the default setting.
Procedure:

1. While pressing the

PL

II

and [PRESET TUNING +] buttons,

press the

I/

1

button to turn on the main power.

2. The message “FACTORY” appears and the present contents

are reset to the default values.

All preset contents are cleared when this mode is activated. Use
this mode before returning the product to clients upon completion
of repair.
Procedure:

1. While pressing the

PL

II

and [PRESET TUNING --] buttons,

press the

I/

1

button to turn on the main power.

2. The message “CLEARING !” appears and the memories are

reset to the default values.

3. When done, the message “CLEARED” appears.

All fluorescent segments are tested. When this test is activated, all
segments turn on at the same time, then each segment turns on one
after another.
Procedure:

1. While pressing the [MUTING] and [PRESET TUNING --] buttons,

press the

I/

1

button to turn on the main power.

2. All segments and all LEDs turn on.
3. Press the [INPUT SELECTOR] button.
4. Half of segments and [VIDEO], [TUNER] LEDs turn on.
5. Press the [INPUT SELECTOR] button once again.
6. Others half of segments and [DVD], [TV/SAT] LEDs turn on.
7. Press the [INPUT SELECTOR] button once again.
8. All segments and all LEDs turn off.

When this mode is used, the model, the destination and the software
version number are displayed.
Procedure:

1. While pressing the [SOUND FIELD] and [PRESET TUNING --]

buttons, press the

I/

1

button to turn on the main power.

2. The model, the destination and the software version number

appear.

This mode is used to check the key.
Procedure:

1. While pressing the [MUTING] and [INPUT SELECTOR] buttons,

press the

I/

1

button to turn on the main power.

2. The message “REST 06” appears.
3. Every pressing of any button other than the

I/

1

button counts

down the buttons. The buttons which are already counted once
are not counted again.

4. When all buttons are pressed, the message “REST 00” appears.

When this mode is used, a state when a protector operates first is
displayed.
Procedure:

1. While pressing the [INPUT SELECTOR] and [PRESET TUNING +]

buttons, press the

I/

1

button to turn on the main power.

2. A state when a protector operates first is displayed.

The preset sound field is cleared when this mode is activated. Use
this mode before returning the product to clients upon completion
of repair.
Procedure:

1. While pressing the [SOUND FIELD] button, press the

I/

1

button to turn on the main power.

2. The message “SF. CLR.” appears and initialization is

performed.

1. While pressing the [INPUT SELECTOR] button, press the

I/

1

button to turn on the main power.

2. The message “AUTO-BET” appears and scans and stores all

the FM and FM RDS stations in the broadcast area.

3. When done, the message “FINISH” appears.

6

This adjustment is performed in order to adjust the transmission
distance of RF signal for DIAT communication.
Connection:

1. Connect the oscilloscope to JL7003 (RF AMP OUT) and GND

on the TX board.

2. Connect DIR-T1 to DIR-T1 jack (J7001).

Be sure to connect DIR-T1 before the adjust.

3. Adjust RV7001 on the TX board so that the center of waveform

becomes 1.0 Vp-p.

4. Confirm trigger is locked.
5. Adjust RV7001 on the TX board so that the center of waveform

becomes 2.2 to 2.4 Vp-p.

VOLT/DIV : 500 mV
TIME/DIV : 500 ns

level : 2.2 to 2.4 Vp-p

JL7003

(RF AMP OUT)

TX board

oscilloscope

JL7003

(RF AMP OUT)

7

7

STR-KSL900W

•

Note on Schematic Diagram:
• All capacitors are in 

µ

F unless otherwise noted.  (p: pF)

50 WV or less are not indicated except for electrolytics and
tantalums.

• All resistors are in 

Ω

  and 

1

/

4

 

W or less unless otherwise

specified.

•         

f

: internal component.

•

2

: nonflammable resistor.

•

C

: panel designation.

•

A

: B+ Line.

•

B

: B– Line.

• Voltages and waveforms are dc with respect to ground

under no signal (detuned) conditions.
no mark : TUNER
(

) : VIDEO

• Voltages are taken with a VOM (Input impedance 10 M

Ω

).

Voltage variations may be noted due to normal production
tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal production
tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F

: TUNER

J

: AUDIO (ANALOG)

c

: AUDIO (DIGITAL)

E

: VIDEO

Note on Printed Wiring Board:
•

X

: parts extracted from the component side.

•

Y

: parts extracted from the conductor side.

•        

f

: internal component.

•

: Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution:
Pattern face side:

Parts on the pattern face side seen from

(Conductor Side)

the pattern face are indicated.

Parts face side:

Parts on the parts face side seen from

(Component Side)

the parts face are indicated.

• Indication of transistor

C

B

These are omitted.

E

Q

B

These are omitted.

C

E

Q

Note: The components identified by mark 

0

 or dotted

line with mark 

0

 are critical for safety.

Replace only with part number specified.

•

DIGITAL board

I/O board

TX board

STBY board

MAIN board

DISPLAY board

VOLUME board

8

8

STR-KSL900W

L-CH

R-CH

A/D CONVERTER

IC1401

DIGITAL AUDIO INTERFACE RECEIVER

IC1301

TV/SAT

OPT IN

DVD

OPT IN

DVD

COAX IN

J301

DIGITAL

IC303

X1301

12.288MHz

D1301

33

D1103

MUTING SWITCH

Q1104

MUTING SWITCH

Q1105

MUTING SWITCH

Q1103

D1105

D1106

34

36

35

32

56

68

12

9

37

113

2

108, 107, 105 – 102, 

112, 110, 109, 97 – 92, 

29 – 32, 35 – 38

27 – 24, 21 – 18

17

6

S-RAM
IC1502

SDO3

SDO2

SDO1

SDO1, SDO2, SDO3

SCKO

LRCKO

BCKO

X1101

16.5MHz

X1502

13.9MHz

EEPROM

IC1131

BCKO, LRCKO, SCKO

MONITOR

OUT

DVD

VIDEO

VIDEO IN

VIDEO AMP & SWITCH

IC201

J501 (1/2)

: VIDEO

: AUDIO (ANALOG)

: AUDIO (DIGITAL)

Signal Path

R-ch is omitted due to same as L-ch.

IC7002

DIAT TRANSMITTER

SCLK

SWDT

XSCEN

LRCK

DATA

BCK

XRST

CSOD

Q7001

BUFFER

J7001

DIR-T1

LPF

DATA, LRCK, BCK, CSOD,

SWDT, SCLK, XSCEN, XRST

RV7001

DIAT SIGNAL

RF LEVEL

X7001

24.576MHz

IC1036

INVERTER

LRCK,DTIN,BCK

CSOD,SWDT,SCLK,XSCEN,XRST