Onkyo TXSR-302 Service Manual

SERVICE MANUAL

SERVICE MANUAL

AV RECEIVER

MODEL TX-SR302

TX-SR302

Ref. No. 3844

112004

Silver model

120V AC, 60HzMDD, UDD

SAFETY-RELATED COMPONENT
WARNING!!

COMPONENTS IDENTIFIED BY MARK ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.

RC-479S

SPECIFICATION

Amplifier Section General

Power Output

Front L/R: 65 W + 65 W
Center: 65 W
Surround L/R: 65 W + 65 W
(8 , 20 Hz~20 kHz, FTC)
Dynamic Power: 160 W + 160 W (3 , Front)
125 W + 125 W ( 4 , Front)
85 W + 85 W (8 , Front)
THD
(Total Harmonic Distortion): 0.08 % (Power Rated)
Damping Factor: 60 (Front, 1 kHz, 8 )
Input Sensitivity and Impedance:
Output Level and Impedance: 200 mV/ 470 (REC OUT)
Frequency Response: 10 Hz~100 kHz/ +1 dB, -3 dB (Direct
mode)
Tone Control: +12 dB, -12 dB, 50 Hz (BASS)
+12 dB, -12 dB, 20 kHz (TREBLE)
SN Ratio: 100 dB (LINE, IHF-A)
Speaker Impedance: 8 ~16

200 mV/ 47 k (LINE)

Video Section

Input Sensitivity/Output Level and Impedance:
1 Vp-p /75 (Composite)

Power Supply: AC 120 V, 60 Hz
Power Consumption: 4.2 A
Stand-by Power Consumption: 1.6 W
Dimensions (W x H x D): 435 x 150 x 365 x mm
17 1/8 x 5 7/8 x 14 3/8 inches
Weight: 8.4 kg

18.5 lbs
Video Inputs

A/V Input: DVD, VIDEO 1, VIDEO 2, VIDEO 3
Video Outputs

A/V Output: MONITOR, VIDEO 1
Audio Inputs

Digital Inputs: 1 (Optical), 1 (Coaxial)
Analog Inputs: DVD (MULTICHANNEL), CD, TAPE,
VIDEO 1, VIDEO 2, VIDEO 3
Multichannel Inputs: 6

Audio Outputs
Analog Outputs: TAPE, VIDEO 1
Subwoofer Pre Outputs: 1
Speaker Outputs: 5 + 2
Phones: 1

TX-SR302

Tuner Section

FM
Tuning Frequency Range: 87.5 MHz~108.0 MHz
Usable Sensitivity: Stereo 17.2 dBf 2 V (75 IHF)
Mono 11.2 dBf 1 V (75 IHF)
S/N Ratio: Stereo 70 dB (IHF-A)
Mono 76 dB (IHF-A)
THD: Stereo 0.3 % (1 kHz)
Mono 0.2 % (1 kHz)
Frequency Response : 30 Hz~ 15 kHz / +1 dB, -1 dB
Stereo Separation: 45 dB (1 kHz )

AM
Tuning Frequency Range: 530 kHz~1710 kHz
Usable Sensitivity: 30 V
S/N Ratio: 40 dB
THD: 0.70 %

Specifications and features are subject to change without notice.

SERVICE PROCEDURES

TX-SR302

1. Replacing the fuses

This symbol located near the fuse indicates that the
fuse used is show operating type, For continued protection against
fire hazard, replace with same type fuse, For fuse rating, refer to
the marking adjacent to the symbol.

Ce symbole indique que le fusible utilise est e lent.
Pour une protection permanente, n'utiliser que des fusibles de meme
type. Ce demier est indique la qu le present symbol est apposre.

REF. NO.

F6901
F6901 or
F6902
F6902 or
F901
F901 or
F903
F903 or

DESCRIPTION

8A-UL
8A-T/UL-ST2
8A-UL
8A-T/UL-ST2

6.3A-UL/T-237

6.3A-T/UL-ST2
5A-UL/T-237
5A-T/UL-ST2

PART NO.

252198
252261
252198
252261
252166
252260
252164
252258

REMARKS
!
!
!
!
!
!
!
!

2. Safety-check out

After correcting the original service problem perform the
following safety check before releasing the set to the customer
Connect the insulating-resistance tester between the plug of
power supply cord and terminal GND on the back panel.
Specifications: More than 10Mohm at 500V

5. Memory Preservation

This unit does not require memory preservation batteries.
A built-in memory power backup system preserves the contents of
memory during power failures and even when the power cord is unplugged.
The power cord must be plugged in order to charge the backup system.
The memory preservation period after the unit has been turned off varies
depending on climate and placement of the unit. On average, memory
contents are protected over a period of a few weeks after the time the unit
has been turned off.
This period is shorter when the unit is exposed to a very humid climate.

3. To initialize the unit

This device employs a microprocessor to perform various
functions and operations. If interference generated by an external
power supply, radio wave, or other electrical sauce results in accident
which causes the specified operations and functions to operate
abnormally.
To perform a result, please follow the procedure below.

1. Press and the hold down the VIDEO 1 button , then press the
STANDBY/ON button when the unit is Power ON.

2. After " Clear " is displayed, the preset memory and each mode
stored in the memory, are initialized and will return to the
factory settings.

4. How to check version of microprocessor?

Main microprocessor Q7008

1. Press and the hold down the DISPLAY button , then press the
STANDBY/ON button when the unit is Power ON.
Version is displayed on FL display only for 3 seconds.

ex.

Version 04212a

2. Press the STANDBY/ON button to Power Off.

OPERATION CHECK-1

DC VOLTAGE DETECTION PROTECTORS

[NOTE1]
Limit time to apply voltage is 0.5 to 1.0 seconds each channel.
When protection operation does not occur at once, try several times.
[NOTE2]
Don't connect speakers or any load.
Don't short speaker terminals.

1. Set the unit to test mode " Test-1-00 " .
1-1. Press and the hold down the CD button , then press the STANDBY/ON button when the unit is Power ON.

1-2. Press the DVD button, while the " Test - _ " is shown.
Unit will be in the state of " Test-1-00 ".

2. Apply DC voltage (+1.5 to +3V) to MULTI CHANNEL (FL, FR, SL, SR, C) terminal, each channel.

3. Check that " Protect " is shown.

4. Apply DC voltage (-1.5 to -3V) to MULTI CHANNEL (FL, FR, SL, SR, C) terminal, each channel.

5. Check that " Protect " is shown.

6. Press the STANDBY/ON button.

FL display

Test - _

Test - 1-00

Clear

0.5 sec.

Disappears

TX-SR302

CURRENT DETECTION PROTECTORS

[NOTE]
In the state of test mode" Test-4-29 ", the pulse waveform output for checking from speaker terminal automatically.
Therefore, oscillator is unnecessary.

1. Set the unit to test mode " Test-4-29 "
1-1. Press and the hold down the CD button , then press the STANDBY/ON button when the unit is Power ON.

1-2. Press the VIDEO 3 button, while the" Test - _ " is shown.
Unit will be in the state of " Test-4-00 ".

1-3. Repeat and press SPEAKERS B button to the " Test-4-29 " is shown.

2. Connect the lord resister (3 ohms) to the speaker terminals.

3. Check that the" Protect " is not shown, and speaker relays not turn OFF.

4. Check the each speaker terminals.

5. Connect the lord resister (1.5 ohms) to the speaker terminals.

6. Check that the " Protect " is shown, and speaker relays turn OFF immediately.

7. Check the each speaker terminals.

8. Press the STANDBY/ON button.

FL display

Test - _

Test - 4-00

Test - 4-29

Disappears

Clear

OPERATION CHECK-2

OUTPUT LEVEL & THERMAL DETECTION

Regarding the power supply system of this unit.

<Function>

1. High-voltage mode
Usually, the power supply supplies high voltage to the power amplifier circuit when the relay (RL6901) is turned On.

2. Low-voltage mode
When as follows, a power supply changes to the state of supplying low voltage when the relay (RL6901) in turned Off.
(1) Excessive output signal is continuously outputted from power amplifier.
(2) Temperature of a heat sink over 80 degrees.

<Purpose>

1. The loss which power amplifier generates is decreased. As a result, the miniaturization of a heat sink is realized.

2. Corresponds to a safety standard.

TX-SR302

<Block diagram>

POWER AMP.

THERMAL
SENSOR
R6380

Q6303

THERMAL
DETECTION

SPEAKER
OUT

OUTPUT
LEVEL
DETECTION

VOLH/
THPRO

+B1

HIGH
VOLTAGE
MODE

LOW
VOLTAGE
MODE

-B1

Q7008

2

MAIN
MICROPROCESSOR

+/- 49 V

+/- 28.9 V

23

SEC1H

RL6901

D6903

RL6902

D6904

Q6303

F6901

F6902

High
Low

Low
High

<Necessity for a check of operation>

May not notice the fuse (F6901, F6902) broken in the case of repair.
Because the power supply is continuing supplying voltage from the High side of SEC1 at high-voltage mode.
When a power supply circuit changes to low voltage mode, amplifier does not operate.
Therefore, it is very important to check operation of this power supply system containing a fuse.

<Procedure>

[NOTE]
Don't connect speakers or any load.
Don't short speaker terminals.
(1) Set the unit is Multi channel input state.
(2) Set the master volume into the minimum.
(3) Apply sine wave signal to MULTI CHANNEL INPUT (FL+FR+C+SL) terminals.
(4) Connect an oscilloscope to speaker terminal of FL channel.
(5) Adjust master volume so that a speaker output may become distortion about 5%.

SEC1

PRI.

T901 MAIN

TRANSFORMER

High-voltage

(6) Check that the RL6901 and RL6902 are turned Off after about 5 seconds progress.
And the power supply changes to low-voltage mode.

Low-voltage

(7) Adjust the master volume so that output voltage may become half.

(8) Check that the RL6901 and RL6902 are turned On after 2 to 3 minutes.
And the power supply returns to high-voltage mode.

OPERATION CHECK-3

OUTPUT LEVEL & THERMAL DETECTION

<Check by test mode>

The following is the procedure of checking detection operation of a microprocessor in false, by using test mode.

OUTPUT LEVEL DETECTION

1. Set the unit to test mode " Test-3-2 "
1-1. Press and the hold down the CD button , then press the STANDBY/ON button when the unit is Power On.

TX-SR302

Test - _

1-2. Press the VIDEO 2 button, while the" Test - _ " is shown.
Unit will be in the state of " Test-3-00 ".

Test - 3-00

1-3. Repeat and press SPEAKERS B to while the " Test-3-2 " is shown.

Test - 3-02

2. Apply signal (sine wave 1kHz, -1.5dBV) to MULTI CHANNEL (FL, FR, SL, SR, C) terminal, each channel.

3. Check that FM STEREO indicator is shown.

FM STEREO

FM STEREO

Test - 3-02

4. Press the STANDBY/ON button.

0.5 sec.

Clear

THERMAL DETECTION

1. Set the unit to test mode " Test-3-2 "
Refer to the clause of "Output level detection".

2. Connect the resistor (2.7 kohms, 1W) between " HT1 " and " COM " terminals of P6301.

Disappears

2.7 kohms
1W

P6301

COM

3. Check that FM STEREO indicator is shown.

TH1

FM STEREO

Test - 3-02

4. Press the STANDBY/ON button.

0.5 sec.

Clear

30

TH1
COM
TH2

P6301

Front side

U16

NAAF-8245

POWER AMPLIFIER PC BOARD

FM STEREO

Disappears

OPERATION CHECK-4

DSP DEBUG MODE

<Regarding the DSP debug mode>

TIn this test mode, the check with normal communication of a microprocessor and the data of DSP and DIR is possible.
This information is a help to find the cause of failure.

<How to go in DSP debug mode>

1. Press and hold down the DISPLAY button, then press the STANDBY/ON button when the unit is power ON.

TX-SR302

FL display
<Ex.>

2. Press the DISPLAY button, while the" Version 04212a " is shown.

Version 04212a

1 sec.

DSP Debug Mode

<How to exit>
Press STANDBY/ON button.

<Explanation of each parameter>

Details of FL display

1 42 5 6 87 93

DIR

1

UNLOCK

E = UNLOCK
= LOCK

Digital Selector

2

D = DIGITAL
A = ANALOG
1 = COAX
2 = OPT1
3 = OPT2
4 = Others

3

Sampling Frequency

96 = 96kHz
48 = 48kHz
44 = 44kHz
32 = 32kHz
= Not detect

Pre Emphasis

4

K = OFF
e = ON

DIR Status

5

0 = PCM/ANALOG
2 = DTS CD
5 = DD/DTS/AAC

MEMORY/DOWNLOAD

MEMORY Address

6

0 = AC3+PLII
1 = AC3/PCM+T-D
2 = DTS/DTS-ES
3 = DTS
5 = AAC+PL"6" : COS
7 = FACTORY TEST MODE

7

ROM/RAM Select/Download Status

H = RAM (Complete Auto Boot)
L = ROM (Under Auto boot)

E1A---0 -o 23 o

DSP

DSP Detect Format

8

[IEC61937]
00 = Null
01= Dolby Digital
03 = Pause
04 = MPEG1 L1
05 = MPEG1 L23/MPEG2 w/o
06 = MPEG2 w/o
07 = MPEG2 AAC
0B = DTS1
0C = DTS2
0D = DTS3
1B = MPEG2 AAC1
1C = MPEG2 AAC2

[Except IEC61937]
20 = Silent
21 = DTS LD
22 = DTS CD
23 = PCM

9

DSP Decode

0 = Decode OK
X = Decode NG

- = Analog in

TX-SR302

EXPLODED VIEWS-1

P901

A404

x 24

A028

F903

U19

F901

A023

x 4

U18

A026

F6901

A004

x 2

A004

A401

U12

F6902

U08

U23

A004

Refer to
<Fig-1> in
"EXPLODED
VIEWS-2"

A004

U17

U11

U26

A004

A030

A004

U27

U09

U25

A004

x 2

U01

U10

A025

A005

x 3

A004

x 6

P101

P7503

A005

x 10

A412

A051

x 6

A050

A425

P7502

U02

Refer to
<Fig-2> in "EXPLODED VIEWS-2"

A410

A414

A060

T901

U20

P800

x 8

A017

x 2

A016

x 2

A015

A017

A010

A055

x 4

A056

x 8

A004

x 4

U03

A411

A004

U04

A413

A002

x 2

A026

x 3

A420

A061

A065

TX-SR302

EXPLODED VIEWS-2

TX-SR302

<Fig-2><Fig-1>

FRONT PANEL INSIDE VIEW

A037

x10

Q6050

Q6060

Q6050A

x10

Q6051

Q6061

Q6052

Q6062

Q6053

Q6063

Q6054

Q6064

A416

(L=85mm)

A418

(L=215mm)

A417

(L=160mm)

A415

(L=135mm)

A416

(L=85mm)

TX-SR302

A

BLOCK DIAGRAM

BCDEFGH

1

2

3

VIDEO 2 IN

VIDEO 1 OUT

VIDEO 1 IN

SURROUND

DVD

SUB WOOFER

DIGITAL IN

CD

TAPE OUT

TAPE IN

VIDEO 3

FRONT

CENTER

COAXIAL

OPTICAL

78

77

L

R

L

R

L

R

L

R

L

R

L

R

L

R

L

R

L

R

2

1

72

71

4

3

6

5

8

7

76

75

10

9

12

11

14

13

16

15

Q281
74HCU04

DIR

2CH A/D

96/24

TUNER UNIT

Q301 BD3811K
SELECTOR/ TONE CONTROL

/ VOLUME

Q701

CS493264

OSC

12.288MHZ

DSP

MAIN
MICROPROCESSOR

18

NC

20

NC

17

19

AK4586

Q801

96/24

6CH D/A

-6dB

INPUT ATT.

SL

SR

L

50KLPF

R

50KLPF

50KLPF

50KLPF

C

50KLPF

Q804

Q803

Q802

2321262528

27

Q302(1/2)

10.5dB

Q302(2/2)

INPUT GAIN

69

0/6dB

INPUT GAIN

66 65

0/6dB

INPUT GAIN

43 42

0/6dB

INPUT GAIN

40 39

0/6dB

INPUT GAIN

30 31

0/6dB

INPUT GAIN

33 34

0/6dB

24

22

POWER SUPPLY

+7V

Q321
78L07

-7V

Q322
79L07

+2.5V
+3.3V

Q7004
BA33C25

DSP IC

SW

50KLPF

RST.CS/CL/DA/

RST.CS.INTREQ/CL/DA

Q202

Q201

MUTE

/SCDO

VMUT2

VMUT1

VIDEO

MONITOR OUT
VIDEO 1 OUT

4

VIDEO3 IN

VIDEO2 IN
VIDEO1 IN

DVD IN

RI

VIDEO

CTLA/B

Q203
LA7956

VIDEO SELECTOR

RI

INTERFACE

5

CDTO/INT1.2.

U7501
REMOTE
SENSOR

12.5MHZ

MAIN

MICROPROCESSOR

Q7008

MPD784225GC-249-8BT

5MHZ

SUB

MICROPROCESSOR

Q7502

MPD780232GC-030-8BT

STANDBY

D7507

BACK
UP

FL TUBE

16BT123GK

Q7501

OPERATION KEY

TX-SR302TX-SR302

0,,-103dB

68

OUTPUT GAIN

OUTPUT GAIN

OUTPUT GAIN

OUTPUT GAIN

OUTPUT GAIN

OUTPUT GAIN

+12VAF

MASTER VOLUME

0-18dB

0-18dB

0-18dB

0-18dB

0-18dB

0-18dB

36

BASS/TREBLE

BASS/TREBLE

15dB

Q305

BASS
BOOST

POWER
AMPLIFIER

MUTING

55

Q307

MUTING

57

Q308

38

37

35

MUTING

Q312

SWPO

Q313

Q306

FL

FR

SL

SR

C

SUBWOOFER
PREOUT

+27dB

+27dB

+27dB

+27dB

+27dB

DC VOLTAGE
DETECTION &
OVER CURRENT
DETECTION
Q6701~6703

VOLTAGE
LEVEL SENSOR

RL6600

RL6604

RL6601

RL6603

D6703

PHONES

L

FRONT
SPEAKERS-A

R

CENTER
SPEAKER

L

SURROUND
SPEAKERS

R
L

FRONT
SPEAKERS-B

R

-12VAF

+5V

MICROPROCESSOR

SUB
MICROPROCESSOR

VIDEO SECTION

PRE-AMPLIFIER
SECTION

SELDA

SELCL

DSP IC

SELMUT

POWER SUPPLY

+5.6V

NJM78M56A

-VP
Q9501

+12V

Q6405
78M12

-12VAF

Q6402
78M12

-12VAF

Q6403
79M12

+5VDSP

Q6931

Q4606
78M05

POWER
AMPLIFIER SECTION

+B1-B1

D6903

AMUT

RL6901

RL6902

FL TUBE

SEC1H/L
CONTROL
Q6901

RELAY
+B2

SEC1H

D921

-924

+B1L+B1H

D6904

D9502

-9504
D9509

-9512

FLAC
FLAC

R6380

THERMAL

SENSOR

SUB

TRANSFORMER

T902

SEC1

PRI.

SEC2

SEC3

T901
MAIN

TRANSFORMER

D6704

F901

VOLH/THPRO

POWER

RL901

P902
AC OUTLET

PRO

SPF

SPCS

SPB

HPDET

AC IN

120V 60Hz

A

BCDEFGH

SCHEMATIC DIAGRAMS-1

PRE-AMPLIFIER SECTION

CD

1

TAPE OUT

TAPE IN

VIDEO-3 IN

VIDEO-2 IN

2

VIDEO-1 OUT

VIDEO-1 IN

DVD

SURROUND R
SURROUND L

SUB WOOFER

CENTER

3

4

NOTE

THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.

<Note>
NC=No mount of parts.

5

R300

P301

R301

R302

R303

330
R304

C308
103Z

R305

C322

330
R306

104Z

R307

C323
104Z

P302

P304

R310

R311

R312

R313

R314

R315

C325

330
R316

104Z

R317

R318

R319

R320

R321

C326
104Z

P305

CDR SEC3-1

330

NC

101

C301 C300C303

101

NC

R323 R322

CDL

330

TOR

330

R324

NCNC

101J

C302

101J

R325

TOL POWER

TIR SPCS

330

NC

R326

101J

101J

NC

R327

TIL PROTECT

V3IR

330

NC

101J

C307 C306 C305 C304

101J

NC

R329 R328

V3IL

330

V2IR

330

NC

R332

101J

NC

101J

R333

V2IL

330

V1OR OUT_RS

330

NCNCNC

C312

101J

101J

R335 R334

V1OL

330

V1IR

330

101J

101J

V1IL

R337 R336

DVDR

330

NC

101J

R338

NC

R339

101J

DVDL

330

MRS

330

NC

101J

NC

101J

R341 R340

MLS

330

MSW

330

NC

101J

NC

C321 C320 C319 C318 C317 C316 C311 C310C315 C314 C313

101J

R343 R342

MC

330

NADG-7401

U01

PRE-AMPLIFIER PC BOARD

!

Q321

78L07

+7V

I

O

G

10/16

C359

104Z

NC

P261A

NC

R346

NC

R345

TUL
TUR

V4R

V4L

TUL

TUR

V1OL

V1OR

77

78

79

80

CDR

1

CDL

2

TIR

3

TIL HPIN

4

V3IR

5

V3IL

6

V2IR

7

V2IL

8

V1IR

9

V1IL

10

DVDR SELCK MCRST

11

DVDL

12

MRS +7V SNONE MCMDA

13

MLS SWNONE MCSDA

14

MSW -7V CNONE MCRDY

15

MC

16

ADCL

17
18

ADCR SELDA A151 232RXD

19
20

DAC_R A171

21

DMIXR DSPSCK

22

DAC_L DSPDO

23

DMIXL

24

NJM4565M
OR MPC4570

7

R361

C327

C328

R362

1

NJM4565M
OR MPC4570

76

47k

47k

47k

47k

47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k

47k
47k
47k
47k

47k

47k

47k

47k

297032

30

272625

28

31

C333

C334

DAC_C

DAC_RS

DAC_LS

DAC_SW

10/16

10/16

8

5

Q302

R347

6

+7V

10K

10K

330J
330J

10K

Q302

4

DAC_C

DAC_SW

DAC_LS MCK2

DAC_RS

DAC_L

DAC_R

14

NC

VCC

Q303

12543

R348

2

10K

R350

3

DAC_L

DAC_RS

+7V

-7V

+7V

C854

7

Q802

10/16

NJM4565M
NJM4565M

C855

Q802

1

47/16

C856

7

Q803

10/16

NJM4565M
NJM4565M

C857

Q803

1

10/16

C858

7

Q804

10/16

GND

NJM4565M
NJM4565M

C859

Q804

1

10/16

TOR

TOL

7172737475

BD3811K1

Q301

33

34

OUT_C

DAC_LS

R349

SNONE

R353

13

121110

NC

NC

R352

NC

R356NCR354

DAC_C

4

8

4

8

4

8

C329

10/16

69

363738

35

OUT_SW

NC

NC

CNONE

C848

5

6

2

3
C849 153J

C850 152J

5

6

2

3
C851 152J

C852 152J

5

6

2

3

C853

68

OUT_LS

OUT_RS

DAC_C

R351

R355

9

6

152J

152J

67

NC

NC

8

GND

7

R850

2.2K

10/16

R848

R849

2.2K

R851

R852

2.2K

R853

2.2K

C330

66

39

2.2K

C840

C841

821J

C842

C843

2.2K

C844

C845

65

64
63
62
61
60
59

BASS TREBLE

58
57
56
55
54
53
52

BASS BOOST

VCC

51
50

VEE

49

MUT

48

CL

47

DA

LOGIC

46
45
44
43
42
41

40

C332
10/16

OUT_SW

OUT_C

14

VCC

NC

Q304

12543

NC

R358

R840

2.2K

821J

R832

R833

822J

R841

2.2K

R842

2.2K

R834

R835

821J

R843

2.2K

R844

2.2K

821J

R836

R837

821J

R845

2.2K

C337

C339

C341
C342
C343

C344
C345

NC

NC
C346

SELMUT
SELCK

13

R386

R360

DAC_SW

100K

100K

100K

100K

ADCL
ADCR

C335
332J

DAC_SW

SWNONE

121110

NC

NC

100K

100K

NC

NC

NC
NC
NC

NC

R357

C832
10/16

C833
10/16

C834
10/16

C835
10/16

C836
10/16

C837
10/16

C336

C347
100/16

332J

C338
563J

C340
563J

NC

R365

NC

R366

C348

100/16

C331

10/16

NC

R359

R391

R389

NC

R387

NC

8

9

GND

6

7

-7V

NC

R392

NC

R390

Q322 79L07

-7V

10/16

R363
10K

R364
10K

OUT_L

OUT_R

NC

NC

R393
NC

NC

R395

NC

C806

220/6.3

C807
104Z

C808
104Z

23
24

C809

10/16

25
26
27
28
29
30
31
32
33

C810

10/16

10/16

C363

C364

C366

O

I

G

C362

C367

104Z

2.2K

R369

C376

472J

47K

C350

R368

C349

R367

10/16

1K

+12VAF

NJM4565M
OR MPC4570

NJM4565M

OR MPC4570

NC

Q317

SNONE

NC

Q318

SWNONE

NC

NC

Q319

CNONE

NC

104Z

C816

D802

DIRCS

DSPDO

DSPSCK

220

220

220

220

R814

R812

R813

CSN

CDTI

DFZ2

CCLK

AVSS

AVDD

VREFH

23

Q801

AK4586

PVDD

RX3

SLAVE

RX4

PVSS

R

3435363738394041424344

18K

R815

330J

C812

330J

C813

C811

104Z

C800

330

330

R816

R817

RX3

P802

R394

47/16

Q314

NC

Q315

Q316

D801

VCOM
DFZ1
LOUT3
ROUT3
LOUT2
ROUT2
LOUT1
ROUT1
LIN
RIN

NC

22K

R370

6

221J

5

2

3

CDTO/SCDO[L]

INT1[L]

R8101KR811

INT1

CDTO

SDRI

RX2

TST

330J

R818

RX2

Q6402

R6402

78M12

1/2W

Q6406

102K

O

+3.3V

L804

104Z
104Z

O

O

O

47
47
47

47

L805

47

L803
022M

L802

I

G

79M12

I

G

78M12

I

G

C6409

223Z

78M05

I

G

022M

NCH-1471

R806
R805
R804
R803

R801
C805
C804

022M

10

C6403

223Z

R6403

1/2W

33

C6405
223Z

R6407

1W

3.3

R6408

NC

R6410

2.2

1/2W

C6411
223Z

C353

R330
470

47/16

R371

C371

472J

NC
R372

NC

472J

C372

C354

R331
470

47/16

R373
470

C355

472J

C373

R344

NC
NC

R396

C374

C356

NC

472J

R374

470
470

R375

C357

C375

472J

R397

NC

NC

C358
47/16

R376

270

R384
220K

1

TC7WU04FU

GND4

X701

CDA
SRDA
LRDA

SDTO

BCK
LRCK

NC

NC

C817

R821

150J

470

C803

150J

C802

150J

12.288M

X801

HC-49/U03C

47/16

C801

+5VDSP

TX

+12VAF

C6404
10/16

Q6403

-12VAF
C6406

10/16

Q6405

+12VVD

C6410
10/16

+5VDSP

C6412
10/16

OUT_L

OUT_R FVCC

OUT_LS LSPO

OUT_C
C351
330J

R383 10K

Q305

7

8

Q305

1

4

-12VAF

INT0[L]

47

47

GND

R808

R809 1K

R807

1213141516171819202122

INT0

11

SDTI3

SDTI2

10

SDTO

11

9

BICK

8

LRCK

7

MCKO

6

TX

TVDD

5
4

DVSS
DVDD

3
2

XTI

1

XTO
PDN

RX1

I2C

022M

L801

10K

C815

C814

330J

DIRPD

330

330 R820

R819

RX1

+5VDSP

1/2W

1W

NC

1/2W

R330
470

R331
470
R373
470

R344

R396

NC

R397
NC

R376

270

1

HC-49/U03C

Q308

Q309

Q310
470
470

Q311

Q312

RN1441

R384
220K

C715 104Z

TC7WU04FU

Q707

GND4

R739 1M

X701

R821
470

-VP

Q9501

R9506

2SA950Y

22

1SR154-400

or O

C9512
223Z

GND
+22V

D9508

-22V SPB
UDZ27D

GND

C6401

104J

P6403

Q307

RN1441

R377

R378

RN1441

R379

NC
NC

R380

NO USE

NC

R381

NO USE

R382

RN1441

Q313

100
R388

C360

474K

Q306
RN2402
OR KRA102S

L704
022M

VCC

8

L706

72

BK1608LM182

63

L705

5

BK1608LM182

CSTCV12.2MTJ0C4

DSPMCK

LRCK

DSPMCK

DSPRST1[L]

+2.5V

R9509 100K

22K

22K

22K

22K

22K

22K

NCH-1471

C708

103K

4.7K
105K
471J

4.7K

4.7K

101J

100/6.3

C9511

223Z

C365

100
R385

C361

GND

330

1K

47

C716

NCH-1471

1/2W

R9508

15K

C9510

1SR154-400

220/63

C9508

4700/16

LPO
GND
RPO

RSPO

GND

CPO

SUB WOOFER
PREOUT

222J

SWPO

C352
104Z

224K

AMUT

5

R718
33K

C709105K
R719
R72047
R721
C710
C711
C712104Z

R722
R723
R724
R725

C713

L702

L701

022M

P406

1A1
1B2
1Y3
2A4
2B
2Y6
GND7

D9507

R9507

15K

D9506

P351

C717

29
30
31
32
33
34
35
36
37
38
39

022M

NCH1471

P306

NC

Q710

CMPREQ/
LRCLKN2
CLKIN

CLKSEL
FILT2
FILT1
VDDA
VSSA
RESET
DD
DC
AUDATA2

RL1N4003

D9502-9505:

C9507

220/35

C9505

2200/35

D9505

D9504

C9503

104J

D9503

D9502

C9506
470/35

D9509
D9510
D9511
D9512

TO NAAF-7866

NC

14

VCC

4A 13
4B 12
4Y 11
3A 10

10

R746

3B 9
3Y 8

EXTMEM

SDTO

BCK

BCK

SDTO

LRCK

330

330

330

330

R713 47

C707

104Z

R714

R715

R716

R717

28

27

26

25

22

23

24

21

VSS3

VDD3

LRCKN1

SDTAN1

EXTMEM

CMPCLK/SCLKN2

SCLKN1/STCCLK2

Q701

CMPDAT/RCV958/SDATAN2

CS493264-CL

AUDATA041AUDATA1

LRCLK42MCLK

SCLK

VDD1

VSS1

40

47

47

R726

R727

LRDA

XMT958

44

43

1

2

3

47

47

R730

R729

R728

C714

104Z

R703

MCK2

C9502

104J
C9501

104J

A8 9

GND10

TC74VHC541FT

Y712

Y8
11

R7068

R7067

220

220

DSPCS1[L]

FMEM/SRAM1[L]

DSPCS1[L]

INTREQ1

CDTO/SCDO[L]

220

220

C704

R706

101J

R707

R708 220

C705
101J

47

R709

10K

R710

10K

R712

R71110K

19

20CS18

DATA0
DATA1

SCDIO/SCDOUT

DATA2

ABOOT/_INTREQ

DATA3

VSS2

VDD2
DATA4
DATA5
DATA6
DATA7

A0/SCCLK

A1/SCDIN

RD/R/_W

WR/DA

6

5

4

330

101J

R701
47

R702

C701

4.7K

R750

R749

10

10

RD

WE

DSPDA[3.3V]

A6 7

A7 8

Q7002

Y514

Y613

R7070

R7069

220

220

A151[L]

A161[L]

NC

17

NC

16

NC

15

NC

14
13
12

NC

11

NC

10

NC

9

NC

8
7

101J

C702

A5 6

Y415

R7073

R7072

220

220

A171[L]

DSPCL[3.3V]

+3.3V

100/6.3

R757
R756
R755
R754

R753
R752
R751
R748

10K

R704

A2 3

A3 4

A4 5

Y118

Y217

Y316

R7075

R7074

220

220

DSPRST1[L]

DSPDA[3.3V]

R738

NC

NC

R737
R736

NC

R735

NC

R734

NC

R733

NC
NC

R732
R731

NC

C706

C703

330

R705

DSPCL[3.3V]

RDSDET

A1 2

G2
19

104Z

Q101
NC

R106

1
G1

VCC20

L703
470M

NCH-1479

R102

NC

SELMUT

AMUT

SELDA

P101

22K

R103

NC

R105
C105

NC

NC

C188

DIRCS
DSPCS

ROM/RAM

A161

DSPRST

CDTO/SCDO

INT1
INT0

DIRPD

D7002

C7010104Z

CDTO/SCDO[L]

NC

22K

100/6.3

C7005

TO TUNER UNIT

SD

DET

TUR

TUL

TMUT

GND

+12VAF

3.3/50

C101

STEREO

1/50

C7004

D7004

1SS352

TC74HCT7007

CDTO/SCDO

C103

3.3/50

R7839 22K

R7138

22K

R7141

10K

10K

R7041

41

R7042

220

42

R7043

220

43

R7044

1K

44

R7045

1K

45

R7046

1K

46

R7047

220

47

R7048

220

48

R7049

1K

49

R7050

1K

50

R7051

1K

51

R7052

1K

52

R7053

220

53

R7054

220

54

R7055

220

55

R7056

1K

56

R7057

1K

57

R7058

1K

58

R7059

220

59

Q7001

60

KRC104S
RN1404

47K

R7060

C7006
104Z

C7007

R7033

47K

220

R7085

R7083 220

12345678

Q7003

9

101112

13

14

220

220

220

R7084

R7081

R7082

INT1

INT0

INT0[L]

INT1[L]

NC

C720

OUTCTL1

VCC 20
0D20Q19
1D31Q18
2D42Q17

NC

3D53Q16
4D64Q15
5D75Q14
6D86Q13

Q704

7D97Q12

CK 11GND10

A12A4A5A6A7

A515

A614

A713

A1212

A1511

Q702 NC

A020

A119

A218

A317 A416

DQ021

DQ122

A0

IO2

A3A2A1

IO0

IO1

GND

FMSIG

+5VDSP

C104

101J

STEREO

SD

220

2.2K

2.2K

R7040

R7038

R7039

40

61626364656667686970717273747576777879

R7062

1K

220K

POFF

104Z

D7003

Refer to following table about
the parts displayed by mark " ".

A0 A8
A1 A9
A2 A10
A3 A11
A4
A5 A13
A6 A14
A7 A15
RD RD

NC

R742

_WEF

7

A1610

VCC 8

WE/A18

A18/VPP 9

DQ223

DQ325

DQ426

VSS
24

IO3

IO4

P801

TO NAETC-7884

TX

RX1

RX2

RX3

PLLCL

PLLDA

PLLSTB

R104

100K

KRC104S

Q7006

TMUT

PLLCL

PLLDA

PLLSTB

470

220

220

220

R7036

R7034

R7035

R7037

MPD784225GC-249-8BT

R7065

R70641KR7063

R7066
1K

1K

RDSSCK

CSTCV12.5MXJ

INTREQ1

REF. NO.
R7078 33K
R7079 33K
R7080 33K
R7178 56K
R7179 10K
R7180 56K

C7012

NC

R747

A14A8A9WEA13

A8 3

A13 4

A14 5

A17 6

CE30

DQ527

DQ628

DQ729

IO5

IO6

IO7

A10

+5VDSP

101J

C106

OR RN1404

KRC104S

Q7007

CTLB

VMUT1

VMUT2

1K

220

220

220

220

220

R7032

R7031

R7029

R7028

R7134

R7030

Q7008

4.7K

104Z

R7071

C7008

X7001

DESCRIPTION

Q7004
BA33C25

2.5V
5

3.3V
4

47/16

47/16

C7011

C721

OUTCTL1
0D20Q19
1D31Q18
2D42Q17
3D53Q16
4D64Q15
5D75Q14
6D86Q13
7D97Q12

A11

A9 2

A11 1

NC

C729

OE

A1031

32

GND

OR RN1404

CTLA

220

R7027

C7009

+5VDSP

3NC2

G

NC

VMUT1

SPF

POWER

220

220

R7025

R7026

1K

104Z

R7076

RDSDATA

VI

1

VCC

NC

Q705

CK 11GND10

NC

NC

R745

A171[L]

VMUT2

SPCS

220

R7024

1K

R7077

RDSSIG

20

NC

R744

A161[L]

CTLB

SEC1H

220

R7023

R7078

C7014

A12

CTLA

RI

SPB

220

2.2K

R7022

R7021

21222324252627282930313233343536373839

BAND

INIT3

INIT1

INIT2

80

R7079

R7178

104Z

C7015

NC

C732

C726NCC727NCC728

NC

R740

R743

A151[L]

FMEM/SRAM1[L]

GND

R7179

RDSDET

47/16

NC

GND

20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

R7080

R7180

R182

L7002

022M

NCH-1471

+12VVD

R7120

1K

R7020

220

HPMUT

R7019

220

R7018

82

MCCLK

R7017

82

R7016

82

R7015

82

R7012

220

232TXD

1K

R7011

2.2K

R7000

C187

Q181

NC

47K

47K

A4A5A6

A317 A416

A3A2A1

R7004

14
X0

VREF

1K

C7001

NC

A515

A218

100

104F

C181

D7001

13
XI

MUX

NC

A7

A614

Q703

A119

A0

L7001

C186

R181

C182

A713

A020

VOLH

PROTECT

C7002

NCH-1479

NC

12

VDD2

NC

VDD1

NC

NC

A12

A15

A1212

A1411

IO121

IO222

IO0

IO1

NC*

L181

C7003
104Z

0

R7003
R7002
R7001

2.2K

10K

33K

R187

NC

NC

NC

R184

X181

15

16

T57

RCLK

RDSDATA

QUAL
1234567

NC

R183

R186

R185

NC

C730

100/6.3

470K

NC

A16

A1610

IO323

IO2

TO RS232C

P7701

11

VSS2

VSS1

A16

NC 9

NC

GND24

P7502B

RI

HPIN
MCRDY
MCSDA

MCMDA
MCCLK

MCRST
HPMUT

-VP

TO NADIS-7403

MCRDY

IC

MPURST

NC

MCCLK

MCMDA

MCSDA

FOR FLASH WRITER

GND

UDZ6.2B

D7702

NO USE

NC

C185

9

10

T2

T1

CMP

VSS3

8

C183

C184

NC

NC

NC

C722

14

VCC

1CLR

1

2CLR

1D2

RD

1CK3
1PR

4

1Q5

6

1Q
GND7

A14

8

A15 7

VCC

IO526

IO425

IO3

IO4

IO5

13

NC

2D 12

RD

2CK 11

10

2PR

2Q 9

Q706

8

2Q

A8

A9

A13

A11

5

A8 3

A9 2

WE

A11 1

A13 4

CE2 6

IO627

IO728

IO6

NC

C731

OE32

A1031

IO829

CE1
30

IO7

A10

+22V
SEC1-1
GND

SEC1-2

SEC3-2

5.6S

TX-SR302TX-SR302

TO NAETC-7868

P410B

SPF

SEC1H

VOLH

GND

+13V

TO NAETC-7868

P411B

TX-SR302 TX-SR302

A

SCHEMATIC DIAGRAMS-2

DISPLAY & VIDEO SECTION

NADIS-7403

1

2

3

U02

DISPLAY PC
BOARD

NC

R7582

D7502

UDZ5.1B

R7505
220K

100K X 13

RN2403

KRA103S

D7503

1SS352

F2F2NPNPP35

Q7504

5556575859

P34

R7532

BCDEFGH

FL TUBE

Q7501

16BT123GK

P33

P32

P31

P30

P29

P28

P27

P26

P25

P24

P23

P22

P21

P20

P19

P18

P17

P16

P15

P14

P13

P12

P11

10K

R7504

47K

R7506

4.7K

R7507 4.7K

SYSOUT

C7507

104Z

P10P9P8P7P6P5P4P3P2P116G

NC

R7581

100K X 14

43

VDD2 59

FIP20 58

FIP21 57

FIP22 56

P46/FIP3840
P47/FIP3939
P50/FIP4038
P51/FIP4137
P52/FIP4236
P53/FIP4335
P54/FIP4434
P55/FIP4533
P56/FIP4632
P57/FIP4731
P60/FIP4830
P61/FIP4929
P62/FIP5028
P63/FIP5127
P64/FIP5226
VDD025
AVDD24

VSS023
22
21

4.7K

R7508

P41/FIP33 45

P42/FIP34 44

41:P45/FIP374142:P44/FIP364243:P43/FIP35

MPD780232GC-030-8BT

22:ANI0
21:ANI1

ANI220

ANI319

AVSS18

P01/INTP116

P02/TI17

4.7K

R75111KR7512

R7509

R7510 1K

10K

P40/FIP32 46

POO/INTP015

P37/FIP31 47

P20/SCK314

10K

R7513

P36/FIP30 48

P21/SO313

10K

R7514

P35/FIP29 49

Q7502

P2212

10K

R7515

P34/FIP28 50

P2311

10K

R7516

FIP23 55

61:FIP19

RESET
6

FIP18 62
FIP17 63
FIP16 64
FIP15 65
FIP14 66
FIP13 67
FIP12 68
FIP11 69
FIP10 70

IC5

VSS12

X13

X24

P31/FIP25 53

P32/FIP26 52

P33/FIP27 51

P24/BUSY10

P25SO19

P26/SI18

P27/SCK17 P30/FIP24 54

61

VLOAD 60

FIP9 71
FIP8 72
FIP7 73
FIP6 74
FIP5 75
FIP4 76
FIP3 77
FIP2 78
FIP1 79

FIP0

80

VDD11

X7501
CST5.00MGW

15G

14G

13G

12G

11G

10G9G8G7G6G5G4G3G2G1GNPNPF1

101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354

10K

R7503

Q7503

KTC3875

2SC2712

F1
123456789

C7502

102J

101J

C7523

C7522

560

R7529

R7524 1K

R7530 1K

R7528 560

C7513 104Z

C7512

MMT

474

U7501

SPS4441E1

C7514

C7516

100/6.3

104Z

C7517

102J

R7520 2.7K

C7508 102J

R7521 2.7K

C7509 102J

C7510 102J

2.7K

R7522

10K

R7527

102J

C7511

R7523 2.7K

10K

R7526

IRF

STBYLED

R7518

100K

VAJ

1K

VBJ

R7517

4

S7626

S7636

S7646

D7505
SLR56VRTB7
OR SEL411OR

VIDEO3

TUNING<

<PRESET

220

R7531
D7505

STANDBY

Q7506
RN1402
KRC102S

S7625

S7635

S7645

K2

VIDEO2

MEMORY

PRESET>

K3

S7613

S7624

S7634

S7644

VIDEO1

TAPE

DSP

S7623

S7633

S7643

SBMLDY

R7612

DIMMER

DVD

TUNER

SURROUND

SBMDI

SBMDO

SBMCLK

SBMRST

470 R7611 330

SUB

MODE

S7612

WOOFER

S7622

AUDIO

SELECTOR

R7631

CD

S7632

R7641 330R7645 1.2K R7644 820 R7643 560 R7642 470

S7642

STEREO

100K

RL7501
NC

NO USE

P7503A

R7519

D7507

1SS352

TO NAETC-7868

K0K1K2

K3

INPUT

S7611

DIGITAL

220K

NCH1477

SBMDO

SBMCLK

SBMRST

L7505

-VP

Q7507

P7502A

NC

D7504

NC

S7621

DISPLAY

330R7632 470R7633 560R7634 820R7635 1.2KR7636 2.2K

S7631

ADJUST

SPEAKER

SYSIN

HPDET

SBMDI

S7641

DIRECT

SBMLDY

TO NADG-7401

104Z

C7515

S7501

MASTER VOLUME

S7615

S7616
SPEAKERS A

R7615

1.2K

SPEAKERS B

R7614

S7614
STANDBY/ON

820

R7613

560

JL7501B

U03

SWITCH

5

PC BOARD

NASW-7404

SYSIN

JL7501A

GND
KEY0

S7627

S7637

S7647

K0

K1

2.2K R7621 330R7625 1.2K R7624 820 R7623 560 R7622 470

R7626

FM MODE

TUNING>

R7646 2.2K

AUDIO

ADJUST

U25

NAETC-7884

TERMINAL PC BOARD

104Z

104Z

C7502

C7501

33/50

NC

R7580 10K X 15

C7503

C7504

C7505

473Z

R7501 220

473Z

220

R7502

D7501 UDZ8.2B

C7506

104Z

+12V

GND

A

B
VMUT2
VMUT1

RI

OPT2

DGND

TO NADG-7401

OPT1

+5V

COAX

OPTOUT

P801B

P206B

+12V

GND
A
B

VMUT2
VMUT1
RI

DGND
OPT1

TO NAETC-7884

+5V
COAX

NAVD-7867

P206A

TO NAVD-7867

VIN4

VIN3

VCC

VIN2

LA7956

GND

VIN1

Q203

VIDEO OUT

U09

P253A

VIDEO&OPT TERMINAL PC BOARD

Q281

74HCU04

Q202

RN1241

R230

R207

R208

R209

14
13
12
11
10

9

9

8

7

6

220

220K

220K

DTA114ES

Q206

R210

Q204
2SA933-S
KTA1267-GR

47/6.3

C285

KRA102M

Q201

RN1241

223Z

1
2

C286

3
4
5
6
78

5

4

3

B

2

A

1

C221

47/16

C222
223Z

P210A

NC

NCH-1452

L281

NCH-1452

Q205

KRA102M
DTA114ES

R223

L282

R224
100K

100K

C203
470/16

C205

470/16

680K

680K

680K

680K

R284

C217

2.2/50

R206

10K

C201

2.2/50

C202

2.2/50

C204

2.2/50

75

R205

C283
223Z

75

C284

D202
D201
C227

223Z

080D

C288

R281

47/6.3

R282

470

C220

223Z

R204

75

R202

R203

C287

R231

R201

C281
223Z

75

75

100K

C282

223Z

75

75

P201

L283

022M

101J

VIDEO

VIDEO-3

OUT

VIDEO-1

IN

DVD IN

MONITOR
OUT

P202

P281

U281

P282

IN

INVIDEO-2

DIGITAL INPUT
COAXIAL

DIGITAL INPUT
OPTICAL

RI

100K

D7507

1SS352

C7521
220/6.3

L7504

220K

NCH1477

HPR

HPE

HPL

GND

+5.6S

GND

TO NAETC-7868

FAC2

FAC1

JL7502A

NOTE

THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.

<Note>
NC=No mount of parts.

HPDET

GND
HPL
HPE
HPR

JL7502B

E7501

NC
L7501 022M

NC
L7502 022M

NC

C7518
102J

L7503 022M

U04

C7519
102J

C7520

102J

HEADPHONE JACK
PC BOARD

!

P7501

PHONES

NAETC-7405

A

SCHEMATIC DIAGRAMS-3

DRIVER AMPLIFIER SECTION

NAAF-7866

BCDEFGH

1

U08

DRIVER
AMPLIFIER
PC BOARD

2

3

SL

R5003
1K

C5003

101K

R5043

D5003

MTZJ5.6B

SR

R5004
1K

C5004
101K

R5044

D5004
MTZJ5.6B

2.2K

2.2K

C5013
22/16

C5014
22/16

R5013

56K

R5103
100K

R5014

56K

R5104
100K

R5093
100K

-0.1V

R5023

330

-43.3V

C5023
10/50

R5094
100K

-0.1V

R5024

330

-43.3V

C5024
10/50

R5063

1.2K

R5064

1.2K

R5113
1K

C5033
NC

-0.7V

R5114

1K

C5034
NC

-0.7V

R5053

4.7K
Q5053

-44V

R5073
560

R5054

4.7K
Q5054

-44V

R5074

560

47.5V

C5073

0V

R5133
18K

C5113
10/100

R5134

18K

C5114
10/100

0V

NC

-47.5V

47.5V

C5074
NC

-47.5V

C5093
101J

R5173
120

C5094
101J

120

Q5013Q5003

C5103
10/100

C5043
100/16

R5083

3.3K

Q5014Q5004

C5104
10/100

C5044
100/16

R5084

3.3K

1.0V

C5083
040D

(1/4W)

1.0V

C5084
040D

R5174

(1/4W)

R5163

(1/4W)

120

48.1V

C5053
47/50

R5033
56K

-1V

Q5043

-48.1V

R5164
120(1/4W)

48.1V

Q5034

C5054
47/50

R5034

56K

-1V

Q5044

-48.1V

R5183
10
(1/4W)

R5184
10
(1/4W)

48.9V

NF

-B1

+B1

B+
B-

R5193
10
(1/4W)

-48.9V

48.9V

NF

-B1

+B1

B+

B-

R5194
10
(1/4W)

-48.9V

P6003A

TO NAAF-7875

P6004A

TO NAAF-7875

NOTE

THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.

4

ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.

!

<Note>
NC=No mount of parts.

Refer to following table about the parts displayed by mark " ".

REF. NO. DESCRIPTION
Q5000-04,Q5010-14 KTC3200-BL OR 2SC1775A-E,F OR 2SC1845-E

Q5030-34 KTA1024-Y,O OR 2SA949-Y,O
Q5040-44 KTC3206-Y,O OR 2SC2229-Y,O
Q5050-54

KTC3200-BL,GR OR 2SC1775A-E,F OR 2SC1845-E,F

5

TO NADG-7401

ECESLESRERE

L

TX-SR302TX-SR302

P306A

E
E
E
E
E
E
E
E

TO NAAF-7875

E

P6011A

L

R5000
1K

C5000

101K

R5040

D5000

MTZJ5.6B

R

R5001
1K

C5001

101K

R5041

D5001
MTZJ5.6B

2.2K

2.2K

C5010
22/16

R5100

C5011
22/16

R5010

56K

100K

R5011

56K

R5101
100K

R5090
100K

-0.1V

R5020

330

-43.3V

C5020
10/50

R5091
100K

-0.1V

R5021

330

-43.3V

C5021
10/50

R5060

1.2K

R5061

1.2K

R5110
1K

C5030
NC

-0.7V

R5111

1K

C5031
NC

-0.7V

R5050

4.7K
Q5050

-44V

R5070

560

R5051

4.7K
Q5051

-44V

R5071

560

R5160

1.0V

C5080
040D

R5170

(1/4W)

1.0V

C5081
040D

R5171

(1/4W)

120 (1/4W)

48.1V

Q5030Q5033

C5050
47/50

R5030
56K

-1V

Q5040

-48.1V

R5161

120(1/4W)

48.1V

Q5031

C5051
47/50

R5031
56K

-1V
Q5041

-48.1V

47.5V

C5070

0V

R5130

18K

C5110
10/100

0V

R5131
18K

C5111
10/100

NC

-47.5V

47.5V

C5071
NC

-47.5V

C5090
101J

120

C5091

101J

120

Q5010Q5000

C5100
10/100

C5040

100/16

R5080

3.3K

Q5011Q5001

C5101
10/100

C5041

100/16

R5081

3.3K

R5180
10
(1/4W)

R5181
10
(1/4W)

48.9V

NF

-B1

+B1

B+
B-

R5190

10

(1/4W)

-48.9V

48.9V

NF

-B1

+B1

B+

B-

R5191

10

(1/4W)

-48.9V

P6000A

TO NAAF-7875

P6001A

TO NAAF-7875

C

R5002
1K

C5002

101K

R5042

2.2K

D5002

MTZJ5.6B

C5012
22/16

R5012

56K

R5102

100K

R5092
100K

-0.1V

R5022

330

-43.3V

C5022
10/50

R5062

1.2K

R5112

1K

C5032
NC

-0.7V
R5052

4.7K
Q5052

-44V

R5072

560

R5162

120

47.5V

C5072
NC

-47.5V

120

C5092

101J

R5172

(1/4W)

1.0V
C5082

040D

Q5012Q5002

C5102

R5082

3.3K

10/100

C5042
100/16

0V

R5132

18K

C5112

10/100

61.5V

Q5032

C5052
47/50

R5032
56K

-1V

Q5042

-48.1V

(1/4W)

R5182

10

(1/4W)

NF

-B1

+B1

B+
B-

R5192

10

(1/4W)

-48.9V

48.9V

P6002A

TO NAAF-7875

TX-SR302 TX-SR302

A

SCHEMATIC DIAGRAMS-4

POWER AMPLIFIER SECTION

NAAF-7875

1

2

3

4

SL

-B1
+B1

TO NAAF-7866

SR

-B1 -B1
+B1 +B1

TO NAAF-7866

BCDEFGH

U17

POWER AMPLIFIER PC BOARD

R6033
390

R6003

5.6K

P6003

R6013

3.9K

NF

B+
B-

R6043
1K

R6053

3.9K

R6034
390

R6004

5.6K

P6004

R6014

3.9K

NF NF

B+ B+
B- B-

R6044
1K

R6054

3.9K

1.1V

1V

0.2V

Q6013

-0.3V

R6023

NC

-48.9V

1V

Q6014

-0.3V

NC

-48.9V

Q6023

1.1V

Q6024

-1.1V

IID

-0.3V

0.2V

R6024

IID

-0.3V

<Note>
NC=No mount of parts.

Refer to following table about the parts displayed by mark " ".

REF. NO. DESCRIPTION
Q6010-6014 2SC1740S-R, S
Q6020-6024 2SC1740S-R, S
Q6030-6031 2SC5171
Q6040-6041 2SA1930
Q6032-6034 2SC5171
Q6042-6044 2SA1930
Q6050-6051 2SC5242-R, O OR MN150S-Y, P, O
Q6052-6054 MN130S-Y, P, O OR 2SC5242-O, R
Q6060-6061 2SA1962-R, O OR MP150S-Y, P, O
Q6062-6064 MP130S-Y, P, O OR 2SA1962-O, R
Q6070-6074 2SC2631-R, S
Q6601-6603,Q6901 KTC3199-GR, 2SC1740S-R, S, 2SC2458-GR
Q6701,6702 KTC3200-BL, GR OR 2SC1775A-E, F OR 2SC1845-E, F
Q6703 KTA1268-GR, BL OR 2SA992-E, F
Q6303

Q6033

-1.1V

0.5V

R6073
100
(1/4W)

-0.5V

Q6043

R6074
100
(1/4W)

-0.5V

Q6044

0.5V

P6083
ID+
ID-

C6043
47/50

R6133
NC

C6033
NC

Q6034

P6084
ID+
ID-

C6044
47/50

R6134
NC

C6034
NC

KTA1267-GR OR 2SA933S-R, S

R6083

2.2

(1/4W)

R6093

2.2

(1/4W)

R6084

2.2
(1/4W)

R6094

2.2

(1/4W)

0.5V

-0.5V

C6233
473J

R6233

8.2

0.5V

-0.5V

C6234
473J

R6234

8.2 (1W)

0V

R6103

0.22 x 2
(2W)

(1W)

0V

R6104

0.22 x 2
(2W)

48.9V

Q6053

R6143
22K

R6153

0V

Q6063

R6173

48.9V

Q6054

R6144
22K

0V

Q6064

R6174

12K

D6003

R6154
12K

D6004

47K

47K

R6163
33K

Q6073

R6164
33K

Q6074

R6193
330K

D6013

R6183

47K

R6194
330K

D6014
R6184

47K

E-B1
E+B1
EB+
EB-
E
E
E
E
E

P6011

D6904

RBV602
D5SBA20
RS603M

D6903

C6907
104J

C6905
334J/100

C6904
334J/100

C6906
104J

F6901
8A-UL,
8A-T/UL-ST2

RL6902

RL6901

JL6951A

TO NAPS-7878

D6906

TO NAPS-7878

F6902
8A-UL, 8A-T/UL-ST2

C6920

NC

0.1V

0.8V

Q6901

JL6952A

R6902
1K

NOTE

THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.

!

D6903, 6904:

C6901
8200/56

C6902
8200/56

NC

NC

C6903
104J

D6901

D6902

P6906

5

P931
+13VS SPF

+13VS +13VS PRO
MPUGND POWER
MPUGND +13VS
POWER POWER

D6706

D6705

C6708
223Z

NC

NC

TO NAPS-7877

TO NAAF-7866

P6011

L

R6030
390

R6000

5.6K

P6000

R6010

3.9K

NF

R6040
1K

TO NAAF-7866

R6050

3.9K

R

R6031
390

R6001

5.6K

P6001

R6011

3.9K

R6041

TO NAAF-7866

1K
R6051

3.9K

C

R6032
390

R6002

5.6K

P6002

R6012

3.9K

NF

-B1

+B1

B+
B-

R6042

TO NAAF-7866

1K
R6052

3.9K

R6020
IID

0.2V

R6021

IID

0.2V

R6022

IID

0.2V

-0.3V

-0.3V

-0.3V

1V

Q6010

-48.9V

1V

Q6011

NC

1V

Q6012

-0.3V

NC

-0.3V

-48.9V

-0.3V

NC

-48.9V

1.1V

1.1V

1.1V

Q6020

-1.1V

Q6021

-1.1V

Q6022

-1.1V

R6070
100
(1/4W)

-0.5V

Q6040

R6071
100
(1/4W)

Q6041

R6072
100
(1/4W)

-0.5V

Q6042

0.5V

0.5V

-0.5V

0.5V

Q6030

C6040
47/50

Q6031

C6041
47/50

Q6032

C6042
47/50

R6130
NC

C6030
NC

R6131

NC

C6031

NC

R6132
NC

C6032
NC

R6080

2.2
(1/4W)

P6080
ID+
ID-

P6081
ID+
ID-

P6082
ID+
ID-

R6090

2.2
(1/4W)

R6081

2.2

(1/4W)

R6091

2.2

(1/4W)

R6082

2.2
(1/4W)

R6092

2.2

(1/4W)

-0.5V

C6230

473J

R6230

8.2

C6231
473J

R6231

8.2

C6232
473J

R6232

8.2

0.5V

0V

R6100

0.22 x 2

(1W)

0.5V

0V
R6101

0.22 x 2

-0.5V

(1W)

0.5V

R6102

0.22 x 2

-0.5V

(1W)

(2W)

(2W)

0V

(2W)

48.9V

Q6050

R6140
22K

0V
Q6060

48.9V

Q6051

R6141
22K

0V
Q6061

R6171

48.9V

Q6052

R6142
22K

0V
Q6062

R6150
12K

R6170
47K

D6000

D6001

R6152
12K

R6172
47K

D6002

R6151

12K

47K

R6160
33K

Q6070

R6161
33K

Q6071

R6162

33K

Q6072

R6190
330K

D6010

R6180
47K

R6191
330K

D6011

R6181

47K

R6192
330K

D6012

R6182
47K

R6306

NAETC-8256

TH1

COM

P6301

D6307

D6306

R6307

2.2K

10K

+24V

JL6402A

TH1

24V

Q6303

0V

R6308

4.7K

LSPE
RSPE
CSPE

LSSPE
RSSPE

JL6402B

THERMAL SENSOR

R6380

PTFL04BE471Q
2N34B0(90)

JL6804A

TO NAETC-7870

JL6803A

LSP
RSP
CSP

LSSP

RSSP

R6851

390

(1/2W)

R6850

(1/2W)

390

TO NAETC-7870

U26

THERMAL
SENSOR
PC BOARD

D6701

C6701
220/6.3

0V

R6702

10K

R6701
22K

R6708

33K

Q6701 Q6702

C6703
223Z

48.9V

50V

D6702

C6704
1/50

+B1

48.9V

Q6703

0V

R6704

47K

D6703
MTZJ5.1B D6704

C6706

100/6.3

R6706
220K

MTZJ5.1B

5.6K

R6709

R6710
12K

0.05V

R6601

24V

24V

Q6602Q6603Q6601

0.8V

R6603

1K

1K

R6602

0V0V

1K

VOLH/THPRO

BRLD
FRLD

CSRLD

+24V

HPL
HPR

+24V

MPUGND

SEC1H

SPB

SPCS

JL6805A

TO NAETC-7870

P6931

E

TO NAETC-7868

RLGND

TX-SR302 TX-SR302

A

BCDEFGH

SCHEMATIC DIAGRAM-5

SPEAKER TERMINAL & POWER SUPPLY SECTION

NAETC-7870

1

2

U12

SPEAKER TERMINAL
PC BOARD

JL6803B

LSP
RSP

CSP
LSSP
RSSP

TO NAAF-7875

D6600

D6601

C6601

D6604

C6600

C6604

RL6600

RL6601

RL6603

RL6604

103J

103Z

103J

FRONT SPEAKERS-B

P6800

L

R

L

R

FRONT SPEAKERS-A

CENTER
SPEAKER

P6802

L

R

NAPS-7877

R92482

(1/2W)

D925

0.1V

C901
103M
/275VAC

F903
5A/125V

P902

SURROUND
SPEAKERS

R926

4.7K

R923
Q921
2SC2458-GR
KTC3199-GR
2SC1740S-R,S

RL901

F901

6.3A/125V

+13VS
+13VS

MPUGND

POWER

1K

P912

P911

TO NNAF-7875

P931A

NAPS-7876

U18

TERMINAL
PC BOARD

P912A

P911A

3

7

JL6805B

BRLD
FRLD

CSRLD

+24V

TO NAAF-7875

JL6804B

LSPE
RSPE

CSPE
LSSPE
RSSPE

3

TO NAAF-7875

U19

POWER SUPPLY PC BOARD

P917
P918

4

P901

AC-H

120V 60HZ

AC-G

P901A

NC

J6306

E921

J5320

R921

C921

223Z

C923

223Z

D921-D924
GP104003E OR
RL1N4003

T902
NPT-1492D

AC OUTLET

120W 1A MAX

D921

D923

C922
220/35

D922

D924

5

NOTE

THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.

<Note>
NC=No mount of parts.

CAUTION

FOR CONTINUED PROTECTION
AGAINST FIRE HAZARD, REPLACE
ONLY WITH FUSE OF SAME TYPE

VA

AND RATING INDICATED.

THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
FOR CONTINUED PROTECTION AGAINST FIRE
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL.

ATTENTION

AFIN D'ASSURER UNE PROTECTION
PERMANENTE CONTRE LES RISQUES
D'INCENDIE, REMPLACER UNIQUEMENT

VA

PAR UN FUSIBLE DE MEME TYPE
ET CALIBRATION COMME INDIQUE.

!

NAETC-7868

U10

REGULATOR PC BOARD

Q6931

NJM78M56FA

C6933

10/16

O

G

I

120

(2W)

S3GND

+13VS

POWER

PRO

C6932
103Z

C6931
1000/25

D6932

D6932,6933:

GP104003E OR
RL1N4003

SPF

SPCS

SPB

SE1H

VOLH/THPRO

MPUGND

+24V

AGND

HPR

HPL

D6933

R6935

P6931A

FLAC1
FLAC2

MPUGND

MPUGND

HPL

AGND

HPR

+5.6V

+24V

S3
S3GND
S3GND

S3
S2
S2
S2
S2

+5.6V

POWER

SPF
SPCS
SE1H
SPB

VOLH/THPRO

PRO

MPUGND

+13VS

P7503B

TO NADIS-7403

P410A

TO NADG-7401

P411A

TO NADG-7401

CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
E LENT.POUR UNE PROTECTION PERMANENTE,N'UTILISER
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.

NAETC-7869

U11

TERMINAL PC BOARD

T901

NPT-1510D

THERMAL FUSE

8

9

10

11

12

13

14

15
16
17
18
19

JL6951B

TO NAAF-7875

R9501
1

F9501

R9521

3.9

(1/2W)

C9513
223Z

R9502

(1/2W)

0.47

(1/2W)

NC

R9503

(1/2W)

0.22

U20

TERMINAL PC BOARD

JL6952B

TO NAAF-7875

JL9501B

TO NAAF-7875

JL9501

NAPS-7878