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4

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······································································ 6

3-1.

Circuit Board Location ················································· 7

3-2.

Block Diagrams – MAIN Section – ····························· 8
– DIGITAL/POWER Section – ···································· 9

3-3.

Printed Wiring Board
– DIGITAL Board (SIDE A) – ··································· 10

3-4.

Printed Wiring Board
– DIGITAL Board (SIDE B) – ··································· 11

3-5.

Schematic Diagram – DIGITAL Section (1/2) – ······· 12

3-6.

Schematic Diagram – DIGITAL Section (2/2) – ······· 13

3-7.

Printed Wiring Board – MAIN Section – ··················· 14

3-8.

Schematic Diagram – MAIN Section (1/3) – ············· 15

3-9.

Schematic Diagram – MAIN Section (2/3) – ············· 16

3-10. Schematic Diagram – MAIN Section (3/3) – ············· 17
3-11. Printed Wiring Board – POWER Section – ··············· 18
3-12. Printed Wiring Board – FRONT Section – ················ 19
3-13. Schematic Diagram – FRONT Section – ··················· 20
3-14. Printed Wiring Board – VIDEO Section – ················· 21
3-15. Schematic Diagram –  VIDEO Section – ··················· 22
3-16. IC Block Diagrams ····················································· 23
3-17. IC Pin Function Descriptions ····································· 25

4-1. Front Panel Section ····················································· 27
4-2. Chassis Section ··························································· 28

······································· 29

Part No.

Model

US model
Canadian model

Parts No.

4-244-312-0

π

4-244-312-1

π

5

This section is extracted
from instruction manual.

?/1

g

qj qh qg qf

qk

ql

w;

wa

ws

wd

wj

wk

wl

wh

wf

wg

1 2 3

5

9 0

6

qa qs

qd

7

4

8

MD/TAPE 9 (22)
MEMORY wj (31)
MOVIE (button/indicator) ws (25,

44)

MULTI CHANNEL DECODING

(indicator) ql (22)

MULTI CH IN w; (22)
MUSIC (button/indicator) wa (25,

26, 44)

PHONES (jack) wl (23, 27, 44)
PRESET TUNING +/– wg (31, 32

47)

SPEAKERS (OFF/A/B/A+B) 2

(14, 23, 44)

TUNER FM/AM qa (22, 31, 32,

33)

TUNING +/– wh (30, 31)
VIDEO 1 6 (22)
VIDEO 2 7 (22)

2CH (button/indicator) wf (24,

26, 29)

?/1 (power) 1 (16, 21, 29, 35,

47)

</> qk (17, 28, 29, 33, 35, 49)

A.F.D. (button/indicator) wd

(24–26)

CD/SACD q; (22)
DIMMER 4 (23)
DISPLAY 3 (23, 45)
Display qs (23)
DVD 8 (22)
ENTER qh (33, 35)
FM MODE wk (30)

INPUT MODE qf (22)
IR (receptor) 5 (36, 45)
Jog dial qj (17, 28, 29, 33, 35,

49)

MAIN MENU qg (17, 28, 29, 33,

35, 49)

MASTER VOLUME qd (20, 22,

44)

6

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

While depressing the  FM MODE  and the  PRESET TUNING

−

buttons simultaneously, press the   ?/1  button again. The message
“FACTORY” appears and the present contents are reset to the
default values.

* Either the 9 kHz step or 10 kHz step can be selected for the AM

channel step.

* Procedure:

Set the FUNCTION to AM.  Turn off the main power.
While depressing the  TUNING+ button or the
PRESET TUNING +  button, press the   ?/1  button to turn on
the main power.  Either the message “9 k STEP” or “10 k STEP”
appears.  Select the desired step.

*Either Normal Speaker or Micro Satellite Speaker can be selected.
*Procedure:
 While depressing the  MAIN MENU  button, press the   ?/1  button
to turn the main power.
Either the message “NORM. SP.” or “MICRO SP.” is displayed.
Select the desired speaker size.

* 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:

While depressing the  FM MODE  and the MD/TAPE  buttons
simultaneously, press the   ?/1  button to turn on the main power.

1. All segments turn on.

2CH  ,  A. F. D  ,  MOVIE  ,  MUSIC   and  MULTI CHANNEL
DECODING  LED turn on.

2. Press the  VIDEO 1  button, confirm display.

2CH  and  MOVIE   LED turn on.

3. Press the  VIDEO 1  button, confirm display

A. F. D  ,  MUSIC  and  MULTI CHANNEL DECODING  LED
turn on.

SW

L

SL

C

R

SSB SR

SLEEP

 L F E

DIGITALEX

OPT

COAX MULTI CH IN 12

PROLOGIC II DTS-ES NEO : 6

SPB

SPA

SP

MPEG-2 AAC

STEREO MONO RDS

MEMORY

EQ

D.RANGE

dB

kHz

mft.

MHz

4. Press the  VIDEO1  button, All segments and all LEDS turn off.

5. Every pressing of the VIDEO1  button turns on each segment

and LED one after another in the same order.
(Not only the  VIDEO1  button, but also the other buttons such
as VIDEO2 , DVD , MD/TAPE , CD  and TUNER FM/AM can
be used.)

* 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:

While depressing the  2CH  button, press the   ?/1  button to turn
on the main power.
The message “SF. CLR.” appears and initialization is performed.

* The software version is displayed.
* Procedure:

While depressing the FM MODE and the DVD buttons
simultaneously, press the   ?/1  button to turn on the main power.
The model name, destination and the software version are
displayed.

* Button check
* Procedure:

While depressing the MUSIC and the TUNING

−

  buttons

simultaneously, press the power  ?/1  button to turn on the main
power.
“REST 25” appears.
Every pressing of any button other than  ?/1   counts down the
buttons.  The buttons which are already counted once are not
counted again.  When all buttons are pressed “REST 00” appears.

* The command mode (AV1 or AV2) of the remote commander can

be selected.

* Procedure:
1. While depressing the  ENTER  button, press the  ?/1  button to

turn on the main power.

2. The message “C.MODE.AV 1” or “C.MODE.AV 2” appears

for a moment. Select the desired mode.

SW

C

SSB

SLEEP

 L F E

DIGITAL

OPT

MULTI CH IN   2

PROLOGIC DTS

SP

MPEG

AAC

STEREO

RDS

MHz

k

m

L

SL

R

SR

EX

COAX

1

 II

-ES NEO : 6

SPB

SPA

-2

MONO

MEMORY

EQ

D.RANGE

dB

Hz

ft.

7

7

• 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.

•

%

: indicates tolerance.

•

f

: internal component.

•

2

: nonflammable resistor.

•

5

: fusible 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 : FM

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

Ω

).

Voltage variations may be noted due to normal produc-
tion tolerances.

• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.

• Signal path.

F

: FM

J

: CD (ANALOG)

c

: DVD (DIGITAL)

• Abbreviation

CND : Canadian model

Caution:
Pattern face side:

Parts on the pattern face side seen from

(Side A)

the pattern face are indicated.

Parts face side:

Parts on the parts face side seen from

(Side B)

the parts face are indicated.

• X

: parts extracted from the component side.

•

a

: Through hole.

•

f

: internal component.

•

: Pattern from the side which enables seeing.

C

B

These are omitted.

E

Q

B

These are omitted.

C

E

Note:
The components identi-
fied by mark 

0

 or dotted

line with mark 

0

 are criti-

cal for safety.
Replace only with part
number specified.

Note:
Les composants identifiés par
une marque 

0

 sont critiques

pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.

MAIN board

BRIDGEABLE board

DISPLAY board

HEADPHONE board

STANDBY board

VIDEO board

S-VIDEO board

DIGITAL board

VOLUME board

POWER board