Onkyo TXSR-8240, TXSR-402, HTR-420 Service Manual

SERVICE MANUAL

AV RECEIVER

TX-SR402/8240/HT-R420

Ref. No. 3796

032004

MODEL

TX-SR402 TX-SR8240 HT-R420

TX-SR402

TX-SR8240 Golden models

HT-R420 Black and Silver models

Silver and Golden models

220-230V AC, 50/60HzSMGR,GMGR

220-230V AC, 50/60HzGMGR

120V AC, 60HzBMDC,BMDD,SMDC,SMDD 230-240V AC, 50HzBMPA,SMPA,SMPT 120V/220-230V AC, 50HzSMWT

RC-518M

(Noth American model)

RC-479S

(Other models)

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.

SPECIFICATIONS-1

TX-SR402/TX-SR8240

Amplifier Section

Power Output:

All channels: 100 W (6 , 1kHz, JEITA) 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, 1kHz, 8 ) Input Sensitivity and Impedance: 200 mV/ 47 k (LINE) 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, 20k Hz (TREBLE) SN Ratio: 100 dB (CD, IHF-A) Speaker Impedance: 6-16

Video Section

Input Sensitivity/Output Level and Impedance: 1 Vp-p /75 (Component and S-Video Y)

0.28 Vp-p /75 (Component Pb/Cb,Pr/Cr)

0.28 Vp-p /75 (S-Video C) 1 Vp-p /75 (Composite)

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 % (1kHz) Mono 0.2 % (1kHz) Frequency Response: 30 Hz~15 kHz / +1 dB, -1 dB Stereo Separation: 45 dB ( 1kHz )

AM

Tuning Frequency Range: 522-1611 kHz Usable Sensitivity: 30 V S/N Ratio: 40 dB THD: 0.70%

TX-SR402/8240/HT-R420

General

Power Supply: AC 220-230 V, 50/60 Hz Power Consumption: 300W Dimensions: 435 W x 150 H x 374 D mm 17 1/8 W x 5 7/8 H x 14 3/4 D inches Weight: 8.8 kg

18.4 lbs

Video Inputs

S-Video Compatible Jack Input: DVD, VIDEO1, VIDEO2 A/V Input: DVD, VIDEO1, VIDEO2, VIDEO3

Video Outputs

S-Video Compatible Jack Output: MONITOR, VIDEO1 A/V Output: MONITOR, VIDEO1

Audio Inputs

Digital Inputs: 1 (Optical ) , 1 (Coaxial ) Analog Inputs: DVD (MULTI CHANNEL), CD, TAPE, VIDEO1, VIDEO2, VIDEO3 Multichannel Inputs: 6

Audio Outputs

Analog Outputs: TAPE, VIDEO1 Subwoofer Pre Outputs: 1 Speaker Outputs: 5+2 Phones: 1

Specifications and features are subject to change without notice.

SPECIFICATIONS-2

HT-R420

Amplifier Section

Power Output:

All channels: 100 W (8 , 20Hz~20kHz, FTC) American model 100 W (8 , 1kHz, DIN) Australian model 100 W (6 , 1kHz, JEITA) Asian model Dynamic Power: 230 W + 230 W (3 , Front) 170 W + 170 W (4 , Front) 115 W + 115 W (8 , Front) THD (Total Harmonic Distortion): 0.08 % (Power Rated) Damping Factor: 60 (Front, 1kHz, 8 ) Input Sensitivity and Impedance: 200 mV/ 47 k (LINE) 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, 20k Hz (TREBLE) SN Ratio: 100 dB (CD, IHF-A) Speaker Impedance: 8~16

Video Section

Input Sensitivity/Output Level and Impedance: 1 Vp-p /75 (Component and S-Video Y)

0.28 Vp-p /75 (Component Pb/Cb,Pr/Cr)

0.28 Vp-p /75 (S-Video C) 1 Vp-p /75 (Composite)

TX-SR402/8240/HT-R420

General

Power Supply: American model: AC 120 V, 60 Hz Australian model: AC 230 V, 50 Hz Others model: AC 120-220/230 V, 50/60 Hz Power Consumption: American model: 4.7A Australian and Worldwide model: 300 W Dimensions: 435 W x 150 H x 374 D mm 17 1/8 W x 5 7/8 H x 14 3/4 D inches Weight: 8.8 kg

19.4 lbs

Video Inputs

S-Video Compatible Jack Input: DVD, VIDEO1, VIDEO2 A/V Input: DVD, VIDEO1, VIDEO2, VIDEO3

Video Outputs

S-Video Compatible Jack Output: MONITOR, VIDEO1 A/V Output: MONITOR, VIDEO1

Audio Inputs

Digital Inputs: 1 (Optical ) , 1 (Coaxial ) Analog Inputs: DVD (MULTI CHANNEL), CD, TAPE, VIDEO1, VIDEO2, VIDEO3 Multichannel Inputs: 6

Audio Outputs

Analog Outputs: TAPE, VIDEO1 Subwoofer Pre Outputs: 1 Speaker Outputs: 5+2 Phones: 1

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 % (1kHz) Mono 0.2 % (1kHz) Frequency Response: 30 Hz~15 kHz / +1 dB, -1 dB Stereo Separation: 45 dB ( 1kHz )

AM

Tuning Frequency Range: American model: 530 kHz~1710 kHz Australian model: 522 kHz~1611 kHz Others model: 530/522 kHz~1710/1611 kHz Usable Sensitivity: 30 V S/N Ratio: 40 dB THD: 0.70%

Specifications and features are subject to change without notice.

SERVICE PROCEDURES-1

TX-SR402/8240/HT-R420

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. PART NO. DESCRIPTION NOTES

F6901,F6902 F6901,F6902 F6901or,F6902or F901 F901 or F902 F902 or F902 or F903 F903 or F903 or F903 F903 or

252099 252198 252261 252198 252261 252076 252242 252276 252075 252241 252275 252164 252258

8A-EAK FUSE 8A-UL 8A-T/UL-ST2 8A-UL 8A-T/UL-ST2

3.15A-SE-EAK FUSE

3.15A-SE-TL250V

2.5A-SE-EAK FUSE

2.5A-SE-TL250V

2.5A-SE-TL250V 5A-UL/T-237 5A-T/UL-ST2

GR,WT,PA,PT DC,DD DC,DD DC,WT,DD DC,WT,DD GR,WT,PA,PT GR,WT,PA,PT GR,WT,PA,PT GR,WT,PA,PT GR,WT,PA,PT GR,WT,PA,PT DC,DD DC,DD

[NOTE]

<DD> : 120V model only <DC> : 120V model only <WT> : World wide model only <GR> : Chinese model only for 220V <PA> : Australia model only for230V <PT>

: Asian model only for 230V

2. Safety-check out

(Only U.S.A. model) 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

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.

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 30212a

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

Sub microprocessor Q7502.

Check is impossible. (Unnecessary)

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.

6.Setting the voltage selector (Worldwide models only)

The Worldwide model has a voltage selector for compatibility with power systems around the world. Before you plug in this model, make sure that the voltage selector is set to the correct voltage for your area. If it isn't, use a small screwdriver to set it as appropriate. For example, if the voltage in your area is 120 volts (V), set the selector to "120V. " And if it's between 220 and 230 volts (V), set it to "220-230V."

AC OUTLET

SWITCHED 100W MAX.

VOLTAGE

SELECTOR

120 V

220-230 V

VOLTAGE SELECTOR

120V

220-230V

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.

SERVICE PROCEDURES-2

7. Changing the AM band step

1. Worldwide model (MWT).

You can select AM band step 9kHz or 10kHz by the following operation. How to select? Press and hold down the TUNER , then press the MEMORY.

2. Except worldwide model.

2-1. Necessary to change as follows. R7003 Change to 10 kohms. (Refer to Fig-1) R7004 Change to 10 kohms. (Refer to Fig-1) 2-2. How to select? Press and hold down the TUNER , then press the MEMORY.

Fig-1 NADG-7401 (PREAMPLIFIER PC BOARD)

component side

TX-SR402/8240/HT-R420

002

Q7008

Microprocessor

1

C7003

R7001

R7002

D7001

D7002

R7003

R7004

R7011

R7012

R7015

R7016

R7018

R7017

R7019

R7020

NCDG-7401 25137401C

R7120

PANEL VIEWS-1

FRONT PANEL

1

STANDBY/ON button

When STANDBY/ON button is pressed to ON, the display will light to show the current volume setting for about 5 seconds then show the current sound input source. Pressing the button again returns the unit to the standby state. This state turns off the display, disables control functions.

2

STANDBY indicator

Lights when the unit is in the standby state and flashes when a signal is received from the remote controller.

3

DIMMER button

Press to set the brightness of the front display. The brightness changes to normal, dim and very dim.

4

DIGITAL INPUT button

When digital components are connected to the DIGITAL INPUT jacks of the unit use this button to assign the DIGITAL INPUT jacks to them according to their forms of connection.

5

SUBWOOFER MODE button

Press to select the subwoofer mode.

6

MEMORY button

This button is used to assign the radio station that is currently tuned in to a preset channel or delete a previously preset station.

2

3 4 5 6 7

10

LISTENING MODE buttons

Press these buttons to select a listening mode for the current source. Press the DSP button to recall the Onkyo-original DSP modes in sequence. Press the DIRECT, STEREO or SURROUND button to recall the corresponding listening mode directly.

11

PRESET/ADJUST / buttons

These buttons make it possible to store desired radio stations under the desired preset numbers and recall them with an easy operation. Also, these buttons adjust the values and parameters of the mode selected using the AUDIO ADJUST, SPEAKER ADJUST or AUDIO SELECTOR button.

12

MASTER VOLUME dial

The MASTER VOLUME dial is used to control the volume level. Turn the dial clockwise to increase the volume level and counterclockwise to decrease it.

13

SPEAKERS A/B buttons

Press SPEAKERS A/B to turn on/off the speaker system A/B. The (SPEAKERS) A/B indicators corresponding to the selected speaker system light up. You can use SPEAKERS A and B simultaneously.

14

PHONES jack

This is a standard stereo jack for connecting stereo headphones. The audio for the front right and left speakers are sent to the headphone speakers.

9 10 11 12

8

19181716151413

TX-SR402/8240/HT-R420

7

FM MODE button

Press to switch the reception mode between stereo and monaural. If audio is interrupted or noise interferes with audio during FM stereo broadcasting, press this button to switch to the monaural reception mode.

8

TUNING / buttons

Use these buttons to change the tuner frequency. When FM is selected, you can hold down one of the TUNING / buttons and then release it to activate the auto-search feature. It will search for a station in the direction of the button you pressed and stop when it tunes into one.

9

Remote control sensor

This sensor receives the control signals from the remote controller.

15

DISPLAY button

Each time you press the DISPLAY button, the display changes.

16

AUDIO SELECTOR button

Press to select an audio input signal format other than FM and AM. Each time this button is pressed, the setting cycles.

17

Input selector buttons (DVD,VIDEO 1,VIDEO 2, VIDEO 3, TAPE, TUNER, and CD)

These buttons are used to select the input source. Pressing and holding the TAPE button for about 2 seconds allows the TAPE and MD sources to be switched.

18

SPEAKER ADJUST button

Press to select speaker setting item.

19

AUDIO ADJUST button

Press to adjust bass, treble, late night function, cinema filter, Panorama, Dimension and Center Width function setting.

PANEL VIEWS-2

DISPLAY

TX-SR402/8240/HT-R420

e

g

a

b

h

a

(SPEAKERS) A/B indicators

Shows the current speaker system in use.

b

MUTING indicator

Flashes when the mute function is active.

c

Source/Listening mode indicators

One of these indicators lights to show the format of the current source as "PCM", " DIGITAL" or "DTS". In addition, one of the listening mode indicators " PRO LOGIC II", "MULTI CH", "DSP", "STEREO" and "DIRECT" lights according to the current listening mode.

c

d

f

i

d

TUNED indicator

Lights up when a radio station is received.

e

MEMORY indicator

Lights up when the MEMORY button is pressed in the radio station preset operation.

f

AUTO indicator

Lights up to indicate auto reception mode (stereo/monaural). At this time, interstation noise will be muted (FM only). It extinguishes when the monaural reception mode is started by pressing the FM MODE button.

g

FM STEREO indicator

Lights up when an FM stereo broadcast station is received.

h

SLEEP indicator

Lights up when the sleep timer is active.

i

Multi function display

In usual operation, shows the current input source and volume. When the FM or AM input is selected, it shows the frequency and preset number. When the DISPLAY button is pressed, it shows the current input source and the listening mode.

PANEL VIEWS-3

REAR PANEL

1 2 3 4 5

FM

AM

75

ANTENNA

VIDEO 1

VIDEO 2VIDEO 3

REMOTE CONTROL

IN

VIDEO 3

IN

ININ

IN

VIDEO 2

DIGITAL INPUT

OPTICAL

L

SUBWOOFER PRE OUT

R

CD

REMOTE CONTROL

1

COAXIAL

OUT

IN

TAPE

Connect the Onkyo components that have connectors such as a CD player, and cassette tape deck using the cables provided with them. When these components are interconnected, they can be controlled from the remote controller provided with the unit. For correct operation, the audio connection cables must also be connected. This applies to both remote and standard operation.

ANTENNA

2

These terminals are for connecting the FM antenna and AM antenna.

FRONT SPEAKERS B

3

These terminals are for connecting the speaker system B.

4

FRONT SPEAKERS A, CENTER SPEAKER and SURROUND SPEAKERS

These terminals are for connecting the speaker system A, including the center and surround speakers.

AC OUTLET

5

The unit is supplied with AC outlet for connecting the power cord from other devices so that their power is supplied through the unit. By doing this, you can use the STANDBY/ON button on the unit to turn on and off the connected devices as well.

OUT

VIDEO 1

IN

DVD MONITOR

OUT

IN

SURR

FRONT

L

R

DVD

CENTER

SUB WOOFER

S VIDEO

VIDEO

TX-SR402/8240/HT-R420

FRONT

SPEAKERS A

SPEAKERS B

RLRL

1211109876

10

VIDEO 1 IN/OUT, VIDEO 2 IN, VIDEO 3 IN

Connect the output terminals (PLAY) of the video cassette recorder to the VIDEO 1 IN L/R jacks on the unit and the input terminals (REC) to the VIDEO 1 OUT jacks. Connect the output terminals of the video cassette player or satellite tuner to the VIDEO 2 IN or VIDEO 3 IN jacks on the unit.

11

DVD

Connect the DVD player. If the DVD player has 5.1 channel output terminals, connect each terminal to the FRONT L/R, CENTER, SUBWOOFER, and SURR L/R terminals on the unit. If the DVD player has only 2 channel output terminals, connect to the FRONT L/R terminals on the HT-R420.

12

MONITOR OUT

The monitor output includes both RCA type and S video configurations. This output is for connecting television monitors or projectors.

Tip

The audio input jacks of the unit do not accept direct connection of an analog turnable. If you want to connect a turntable to the unit prepare a phono equalizer and connect it to the unused audio input jacks (IN L/R). Refer to the instruction manuals of the phono equalizer and turntable for details.

CENTER SPEAKER

SURROUND SPEAKERS

RL

AC OUTLET

DIGITAL INPUT OPTICAL, COAXIAL

6

These are digital audio inputs. There is 1 optical jack and 1 coaxial jack. The inputs accept digital audio signals from DVD, LD, CD, or other digital source.

SUBWOOFER PRE OUT

7

This terminal is for connecting an active subwoofer.

8

CD IN

Connect the output terminal on the CD player to the CD IN L/R jacks on the unit.

9

TAPE IN/OUT

Connect the output terminals (PLAY) of the cassette tape deck or MD recorder to the TAPE IN L/R jacks on the unit and the input terminals (REC) to the TAPE OUT L/R jacks.

REMOTE CONTROLLER

RC-518M/RC-479M

RC-518M (HT-R420 American model)

TX-SR402/8240/HT-R420

10

1

11

1

SLEEP button

For setting the sleep time. This button is provided only on the remote controller.

2

STANDBY/ON button

3

12

4

5

13

Turns on the unit or put it in standby.

3

Listening mode buttons

Press to change the listening mode.

4

CINE FLTR button

Press to activate/deactivate Cinema Filter function.

14

5

15

6

7

8

16

9

LATE NIGHT button

Press to change the late night setting.

6

TEST/CH SEL/LEVEL / buttons

For setting the output levels for each speaker. These buttons are provided only on the remote controller.

7

AUDIO SEL button

Press to select an audio input signal format.

8

INPUT SELECTOR buttons

For selecting the input source.

9

MUTING button

Activates the mute function. This button is provided only on the remote controller.

RC-479S (HT-R420 Except American models,TX-SR402,TX-SR8240)

10

1

11

2

3

4

12

13

5

14

15

6

7

8

16

9

10

PRESET / button

For selecting a tuner preset channel.

11

DIMMER button

For adjusting the brightness of the front display.

12

Mode buttons

For selecting the component to be operated by the remote controller. The RC-518M remote controller has five mode buttons, the RC-479S has three.

SP A/SP B buttons

13

Press to switch the speaker systems.

14

AUDIO ADJUST button

Press to adjust bass, treble, late night function and cinema filter function setting.

15

ADJUST / button

Press to adjust the values and parameters of the mode selected using the AUDIO ADJUST, SPEAKER ADJUST or AUDIO SELECTOR button.

16

VOLUME / button

For adjusting the volume.

TX-SR402/8240/HT-R420

EXPLODED VIEWS-1

P901

A028

A402

TXSR402/8240 MGR Only

U19

A023

x 4

A404

x 27 (MWT x 28)

A021

x 2

F903 F901 F902

F6901

A024

A401

U12

F6902

U23

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

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

A021

U8

U17

U15

A035

A030

A021

U27

U16

U9

U25

A036

x 2

U1

U10

A025

A007

x 3

A020

x 6

P101

P7503

A005

x 10

A051

x 6

A050

A425

HT-R420 MDD, MDC Only

P7502

U2

Refer to <Fig-3> in EXPLODED VIEWS-2

A410

A026

U18

T901

U11

P800

x 7

A017

x 2

U20

A017

A016

x 2

A015

A010

A055

x 4

A056

x 8

A057

x 4

U3

A004

P7504

A411

U4

A412

A413

A002

x 2

A414

A421

x 3

A424

A420

A060

TX-SR402/8240/HT-R420

A065

A430

HT-R420 MDD, MDC Only

EXPLODED VIEWS-2

TX-SR402/8240/HT-R420

<Fig-1>

HT-R420 MPA, MPT,MWT

U21

U22

A022

<Fig-2>

Q6050A

x10

HT-R420 MDD, MDCTX-SR402/8240

U26

A022

<Fig-3>

FRONT PANEL INSIDE VIEW

A416

(L=85mm)

A418

(L=215mm)

BLACK MODELS ONLY

[HT-R420(B)MDC, (B)MDD, (B)MPA ONLY]

A415

(L=135mm)

BLACK MODELS ONLY

[HT-R420(B)MDC, (B)MDD, (B)MPA ONLY]

A037

x10

Q6050

Q6060

Q6051

Q6061

Q6052

Q6062

Q6053

Q6063

Q6054

Q6064

A417

(L=160mm)

A416

(L=85mm)

BLACK MODELS ONLY

[HT-R420(B)MDC, (B)MDD, (B)MPA Only]

TX-SR402/8240/HT-R420

A

BLOCK DIAGRAM

BCDEFGH

78

DIR

77

2CH A/D

96/24

1

CD

R

TAPE OUT

R

TAPE IN

R

VIDEO3

R

VIDEO-2 IN

VIDEO-1 OUT

VIDEO-1 IN

FRONT

SURROUND

CENTER

COAXIAL

OPTICAL

R

2

DVD

3

SUB WOOFER

DIGITAL IN

2

L

1

72

L

71

4

L

3

6

L

5

8

L

7

76

L

75

10

L

9

12

L

11

14

L

13

16

15

Q281 74HCU04

OSC

12.288MHZ

TUNER UNIT

Q701

CS493264

DSP

MAIN MICROPROCESSOR

18

NC

20

NC

17

19

Q801

AK4586

96/24

6CH D/A

-6dB

INPUT ATT

SL

SR

L

50KLPF

R

C

Q804

50KLPF

Q803

50KLPF

Q802

50KLPF

Q301 BD3811K

2321262528

27

Q302(1/2)

10.5dB

Q302(2/2)

24

DSP

INPUT GAIN

69 68

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

22

POWER SUPPLY

+7V

Q321 78L07

-7V

Q322 79L07

POWER SUPPLY

+2.5V

Q7004

+3.3V

BA33C25

+12VAF

-12VAF

+5V

SW

50KLPF

RST.CS/CL/DA/

VIDEO

4

VIDEO3 IN

VIDEO2 IN

VIDEO1 IN

DVD IN

S-VIDEO

Y

VIDEO 2 IN

VIDEO 1 IN

C

Y

C

CTLA/B

Q203 LA7956

VIDEO SELECTOR

Q213 LA7956

Q212 LA7956

5

Y

C

DVD IN

RST.CS.INTREQ/CL/DA/SCDO

VMUT2

MUTE

Q202

Q201

MUTE

Q211

Q

Q210

Q207

Q208

VMUT1

VIDEO

MONITOR OUT

VIDEO 1 OUT

S-VIDEO

C

Y

MONITOR OUT

Y

VIDEO 1 OUT

CDTO/INT1.2.

REMOTE SENSOR

U7501

12.5MHZ

MAIN

MICROPROCESSOR

Q7008

MPD784225GC-XXX-8BT

5MHZ

SUB

MICROPROCESSOR

Q7502

MPD780232GC-XXX-8BT

STANDBY

D7507

BACK UP

Q7501

16BT123GK

FL TUBE

OPERATION KEY

TX-SR402/8240/HT-R420TX-SR402/8240/HT-R420

0,,-103dB

+12VAF

-12VAF

+5V

OUTPUT GAIN

0-18dB

OUTPUT GAIN

0-18dB

OUTPUT GAIN

0-18dB

OUTPUT GAIN

0-18dB

OUTPUT GAIN

0-18dB

OUTPUT GAIN

0-18dB

SELDA

MASTER VOLUME

BASS/TREBLE

36

SELMUT

SELCL

15dB

Q305

BASSBOOST

POWER AMPLIFIER

MUTING

55

Q307

MUTING

57

Q308

38

37

35

MUTING

Q312

Q306

Q313

AMUT

SWPO

SUBWOOFER PREOUT

R6380

THERMAL

SENSOR

+27dB

DC VOLTAGE DETECTION OVER CURRENT DETECTION Q6701~6703

VOLTAGE LEVEL SENSOR

D6703

VOLH

D6704

PRO

RL6600

RL6604

RL6601

RL6603

SPF

SPCS

SPB

HPDET

PHONES

L

FRONT SPEAKERS-A

R

CENTER SPEAKER

L

SURROUND SPEAKERS

R

L

FRONT SPEAKERS-B

R

MICROPROCESSOR

SUB MICROPROCESSOR

VIDEO SECTION

PREAMPLIFIER SECTION

DSP SECTION

RI

INTERFACE

+5.6V

-VP

+12V

-12VAF

NJM78M56A

Q9501

Q6405 78M12

Q6402 78M12

Q6403 79M12

+5VDSP

RI

Q6931

Q4606 78M05

+BV

POWER AMP

+B1

-B1

SEC1H/L CONTROL

RL6901

RL6902

RELAY +B2

FL TUBE

SEC1H

D921

-924

+B1L+B1H

D6904D6903

D9502

-9504

D9509

-9512

FLAC

SUB

TRANSFORMER

T902

SEC1

PRI.

SEC2

SEC3

T901

MAIN

TRANSFORMER

F901

RL901

P902 AC OUTLET

POWER

AC IN

A

BCDEFGH

SCHEMATIC DIAGRAMS-1

PREAMPLIFIER SECTION

R300

P301

CD

1

TAPE OUT

C308

TAPE IN

103Z

C322

104Z

VIDEO-3 IN

C323

104Z

P302

P304

VIDEO-2 IN

2

VIDEO-1 OUT

VIDEO-1 IN

C325

104Z

DVD

SURROUND R

SURROUND L

SUB WOOFER

CENTER

3

4

5

C326

104Z

P305

<Notes> NC=No mount of parts.

NOTE

.

THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY

REPLACE ONLY WITH PART NUMBER SPECIFIED. .

VOLTAGE (MEASURED WITHVOLTMETER) 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 u F/WV.

.

ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.

EX) 030- 3pF 330- 33pF 331- 330pF333- 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.

.

IS DC VOLTAGE, AT NO INPUT SIGNAL.

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

C300 471J 101K 471J 471J

C301 471J 101K 471J 471J

C304 471J 101J 471J 471J

C305 471J 101J 471J 471J

C306 471J 101J 471J 471J

C307 471J 101J 471J 471J

C310 471J 101J 471J 471J

C311 471J 101J 471J 471J

C314 471J 101J 471J 471J

C315 471J 101J 471J 471J

C316 471J 101J 471J 471J

C317 471J 101J 471J 471J

C318 471J 101J 471J 471J

C319 471J 101J 471J 471J

C320 471J 101J 471J 471J

C321 471J 101J 471J 471J

R7003 10K 0 10K 10K

R7004 33K 1K 10K 33K

R7078 33K 33K 33K 33K

R7079 33K 33K 33K 33K

R7080 10K 10K 10K 10K

R7178 56K 56K 56K 56K

R7179 10K 10K 10K 10K

R7180 33K 33K 33K 33K

CDR SEC3-1

330

R301

C301 C300C303

R323 R322

CDL

330

R302

TOR -12VAF

330

R324

C302

101J

R303

101J

R325R327R329 R328

TOL POWER

330

R304

TIR SPCS

330

R326

R305

TIL PROTECT

330

R306

V3IR

330

R307

C307 C306 C305 C304

V3IL

330

R310

V2IR

330

R332

R311

R333

V2IL

330

R312

V1OR OUT_RS

330

C312

101J

R313

101J

R335 R334

V1OL

330

R314

V1IR

330

R315

R337 R336

V1IL 330 R316

DVDR

330

R338

R317

R339

DVDL

330

R318

MRS

330

R319

R341 R340

MLS

330

R320

MSW

330

R321

C321 C320 C319 C318 C317 C316 C311 C310C315 C314 C313

R343 R342

MC

330

MGR 420MDD 420MWT MPA,MPT

U01

NADG-7401

PREAMPLIFIER PC BOARD

78L07

Q321

+7V

NO USE

P261A

R346

470K

NC

470K

R345

NC

TUL

TUR

C329

C330

10/16

TOL

TOR

V1OL

V1OR

V4R

V4L

TUL

TUR

77

78

79

80

CDR

CDL

TIR

TIL HPIN

V3IR

V3IL

V2IR

V2IL

V1IR

V1IL

10

DVDR SELCK

11

DVDL

12

MRS +7V SNONE MCMDA

13

MLS SWNONE MCSDA

14

MSW -7V CNONE MCRDY

15

MC

16

ADCL SELMUT

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

R362 10K

1

NJM4565M OR MPC4570

76

47k

1

47k

2

47k

3

47k

4

47k

5

47k

6

47k

7

47k

8

47k

9

47k

297032

30

272625

28

31

C334

DAC_C

DAC_RS

DAC_LS

DAC_SW

10/16

8

5

Q302

R347

6

10K

C327

330J 330J

C328

DAC_C

DAC_SW

DAC_LS MCK2

DAC_RS

Q302

4

DAC_L

DAC_R

4066

Q303

12543

R348

2

10K

3

DAC_L

+7V

-7V

+7V

C854

7

10/16

NJM4565M NJM4565M

C855

1

47/16

C856

7

10/16

NJM4565M NJM4565M

C857

1

10/16

C858

7

10/16

GND

NJM4565M NJM4565M

C859

1

10/16

737475

C333

10/16

+7V

14

VCC

R350

R354

DAC_RS

Q802

Q803

Q804

72

33

DAC_LS

SNONE

13

2.2K

12K

152J

4

8

4

8

4

8

69

71

Q301

BD3811K1

34

363738

35

OUT_LS

OUT_C

OUT_SW

R349

R351

2.2K

12K

R353

R355

9

121110

6

2.2K

R352

CNONE

12K

R356

DAC_C

C848

5

6

2

3

C849153J

C850152J

5

6

2

3

C851152J

C852152J

5

6

2

3

152J

C853

68

OUT_RS

DAC_C

2.2K

12K

8

7

NC

67

GND

R848

2.2K

C840

R849

2.2K

R850

2.2K

C842

C843

R851

2.2K

R852

2.2K

C844

C845

R853

2.2K

66

65

BASS TREBLE

BASS BOOST

MUT

CL

LOGIC

DA

40

39

C332 10/16

OUT_SW

Q304

R840

2.2K

821J

C841

822J

R841

2.2K

R842

2.2K

821J

R843

2.2K

R844

2.2K

821J

R845

2.2K

VCC

VEE

14

4066

12543

R358

C335 332J

64

C336

63

332J

C337

62

61

C338

C339

563J

60

59

C340

C341

563J

58

C342

57

R365

C343

56

C344

55

R366 54

53

C347

C345

52

51

50

C346

C348

49

48

SELCK

47

46

45

44

43

C331

42

10/16

41

OUT_C

DAC_SW

270

R359

R391

SWNONE

R357

R389

2.7K R387

2.7K

8

9

13

121110

VCC

6

7

NC

R386

2.7K

2.7K R392

2.2K

270

12K

R390

R360

DAC_SW

C832

10/16

R832

100K

R833

100K

C833

10/16

C834

10/16

R834

100K

R835

100K

C835

10/16

C836

10/16

R836

100K

R837

100K

C837

10/16

ADCL

ADCR

10/16

-7V

10/16

R363 10K

R364 10K

OUT_L

OUT_R

2.2K

12K

GND

-7V

C807104Z

C808

104Z

C80910/16

C364 10/16

C363 10/16

C366

104Z

IO

G

C359

Q322 79L07

IO

G

C362

C367

C376

472J

R368

C349

R367

10/16

1K

NJM4565M

OR MPC4570

NC

Q317

Q314

NC

R393

100K

NC

Q318

Q315

NC

R394

100K NC

Q319

Q316

NC

R395

NC

C816 104Z

D801

D802

DIRCS

C806

R814 220

220/6.3

VREFH

CSN

DFZ2

AVSS

AVDD

23

VCOM

24

25

DFZ1

26

LOUT3

27

ROUT3

28

LOUT2

29

ROUT2

AK4586

30

LOUT1

31

ROUT1

32

LIN

33

RIN

PVDD

RX4

PVSS

R

3435363738394041424344

18K

R815

C810

47/16

C800

330J

C811

104Z

R816

NC

P802

R6402

Q6402

+12VAF SEC3-2

78M12

C6404

10/16

104Z

2.2K

R369

R370

47K

C350

221J

+12VAF

NJM4565M OR MPC4570

3

SNONE

SWNONE

CNONE

DSPDO

DSPSCK

CDTO/SCDO[L]

R810 1K

R811 220

R812 220

R813 220

CDTI

CCLK

CDTO

Q801

TST

RX3

SLAVE

C812

330J

C813

330

R817

R818

RX3

Q6403

79M12

C6406

10/16

Q6405

+12VVD

78M12

C6410

10/16

Q6406

+5VDSP

78M05

C6412

10/16

OUT_L

OUT_R FVCC

OUT_LS LSPO

OUT_C

C351

22K

330J

R383 10K

6

Q305

7

5

8

2

Q305

1

4

-12VAF

INT1[L]

INT0[L]

+3.3V

GND

R809 1K

R807 47

R808 47

1213141516171819202122

L804

SDTI2

INT1

INT0

SDTI3

11

SDTI1

10

SDTO

9

BICK

8

LRCK

7

MCKO

6

TX

5

TVDD

104Z

4

DVSS

104Z

3

DVDD

2

XTI

1

XTO

PDN

RX1

I2C

RX2

022M

L801

R820 10K

C815

102K

C814

330J

DIRPD

330

R819

RX2

RX1

+5VDSP

G

NCH-1471 47

47

L805

47

L803

022M

L802

IO

C6411

223Z

022M

R806

R805

R804

R803

R801

C805

C804

C6409

1/2W

10

IO

C6403

223Z

R6403

33 1/2W

IO

C6405

223Z

R6407

3.3 1W

IO

R6408

223Z

(NO USE)

R6410

2.2

1/2W

C353

R330

470

47/16

C371

472J

R371

R372

C372

472J

C354

R331

470

47/16

R373

470

C355

472J

C373

R344

NC

R396

C374

C356

NC

470

472J

R374 R375

470

C357

C375

472J

R397

NC

C358

R376

270

47/16

1

TC7WU04FU

GND4

X701 CSTCV12.2MTJ0C4

CDA SRDA LRDA

SDTO

BCK

LRCK

NC

C817

R821

C803

150J

470

150J

C802

150J

12.288M

X801

C801

47/16

HC-49/U03C

+5VDSP

TX

1/2W

3.3 1W

R330

Q307 RN1441

470

R371

R372

R331

Q308

470

R373

Q309

470

R344

R396

NC

470

Q310

R374 R375

Q311

470

R397

NC

R376

Q312

RN1441

270

R384

220K

C715 104Z

1

TC7WU04FU

Q707

GND4

R739 1M

X701 CSTCV12.2MTJ0C4

R821

470

HC-49/U03C

R7036

R747

10

IO5

PLLCL

PLLDA

R104

100K

PLLCL

PLLDA

220

R7037

R70651KR70641KR7063

INTREQ1

NC

A14A8A9WEA13

A14 5

A17 6

DQ527

DQ628

IO6

Q7006

220

R7035

R7066

1K

47/16

A13 4

DQ729

IO7

P801

TX

RX1

PLLSTB

101J

C106

KRC104S

OR RN1404

VMUT1

PLLSTB

470

220

R71341KR7034

R7032

R7031

R7030

Q7008

MPD784225

C7008

R7071

4.7K

104Z

X7001

CSTCV12.5MXJ

RDSSCK

2.5V

3.3V

C7011

47/16

C7012

OUTCTL1 VCC20

0D20Q19

1D31Q18

2D42Q17

3D53Q16

4D64Q15

5D75Q14

6D86Q13

7D97Q12

A11

A8 3

A9 2

A11 1

NC

C729

A1031

CE30

OE32

NC*

A10

TO NAETC-7884

RX2

RX3

CTLB

CTLA

GND

VMUT1

VMUT2

+5VDSP

Q7007

KRC104S

OR RN1404

SPF

CTLB

CTLA

SPCS

POWER

220

R7028

Q7004

SPB

SEC1H

220

R7027

R7026

R7025

R7024

R7023

R7022

INIT1

INIT2

R7078

R7077

R7076

104Z

R7079

C7009

R7178

RDSSIG

RDSDATA

+5VDSP

VI

1

2

NC

104Z

C7014

C721

Q705 NC

VMUT2

220

R7029

BA33C25 5

4G3

Q705

CK11GND10

TC74VHC574FT

NC

R743

R744

R745

1K

A171[L]

A161[L]

A151[L]

RI

GND

2.2K

R7021

21222324252627282930313233343536373839

R7120

1K

R7020

220

20

R7019

220

19

R7018

82

18

R7017

82

17

R7016

82

16

R7015

82

15

14

13

R7012

220

12

R7011

1K

11

10

9

8

C7003

104Z

7

6

5

4

R7003

3

BAND

R7002

2.2K

2

R7001

2.2K

1

INIT3

80

R7080

R7180

R7179

R187

NC

R184

X181

15

16

T57

RCLK

Q181 BU1923F

RDSDATA

QUAL 1234567

R182NCR183

NC

R186

R185

RDSDET

L7002

022M

NCH-1471

C7015

47/16

A4A5A6

NC

C732NCC726NCC727NCC728

Q703

C730

1K

R740

NC

104Z

A3A2A1

FMEM/SRAM1[L]

+12VVD

HPMUT

MCRST

MCCLK

232TXD

R7004

R7000

C7001

C187NCC186

14

X0

VREF

C181

NC

A515

A218

A317 A416

TO RS232C

NC*

P7701

VOLH

PROTECT

100

D7001

104F

C7002

100/6.3

L7001

470K

NCH-1479

NC

R181

A614

IS62LV1024LL-70HI MPD441000LGU-B70X MPD44200LGU-B70X

A119

10

11

12

13

XI

T1

VSS2

VDD2

VSS3

VSS1

VDD1

MUX

L181

NC

C182

NC

RD

A16

A7

A12

A15

A16

A14

A713

NC9

A1212

A1411

A15 7

A1610

VCC8

IO526

A020

GND24

IO121

IO222

IO323

IO425

A0

IO0

IO1

IO2

IO3

IO4

P7502B

RI

HPIN

MCRDY

MCSDA

MCMDA

MCCLK MCRST

HPMUT

-VP

TO NADIS-7403

MCRDY

IC

MPURST

NC

MCCLK

MCMDA

MCSDA

FOR FLASH WRITER

GND

D7702 UDZ6.2B

NC

NO USE

C185

T2

Q181 NC

CMP 89

C184

C183

NC

C722

VCC14

1CLR1 1D2

2CLR 13

1CK3

2D 12

RD

2CK 11

1PR4

2PR 10

1Q5

2Q 9

1Q6

Q706

NC*

2Q 8

GND7

TC74VHC74FT

Q706 NC

A8

A9

A13

A11

A8 3

A9 2

WE5

A11 1

A13 4

CE2 6

IO627

IO728

IO5

IO6

NC

C731

A1031

IO829

OE32

CE130

NC

IO7

A10

Q703 NC

P101

22K

680K

C188

ROM/RAM

CDTO/SCDO

C7010104Z

22K

R103

NC

R105

NC

C105 104Z

470J

NC

DIRCS

DSPCS

A161

DSPRST

INT1

INT0

DIRPD

C7005

100/6.3

D7002

CDTO/SCDO[L]

NC

TO TUNER PACK

SD

DET

TUR

TUL

TMUT

GND

C101

3.3/50

STEREO

R7839 22K

R7138

22K

R7141

10K

R7041

10K

SELMUT

R7042

220

R7043

220

R7044

1K

R7045

1K

R7046

1K

R7047

220

R7048

220

R7049

1K

R7050

1K

R7051

1K

R7052

1K

R7053

220

R7054

220

R7055

220

R7056

1K

R7057

1K

R7058

1K

R7059

220

KRC104S

RN1404

R7060 47K

1/50

C7004

Q7001

D7004

C7006

1SS352

104Z

R7033

47K

R7083 220

TC74HCT7007

Q7003

9

1011121314

220

R7082

R7081

INT1

INT0

CDTO/SCDO

INT0[L]

INT1[L]

NC

C720

OUTCTL1 VCC20

0D20Q19

1D31Q18

2D42Q17

3D53Q16

4D64Q15

5D75Q14

Q704

6D86Q13

7D97Q12

CK11GND10

TC74VHC574FT

A12A4A5A6A7

A515

A614

A713

A1212

Q702

MX29LV040

A020

A119

A218

A317 A416

DQ021

A3A2A1

IO0

A0

GND

FMSIG

+12VAF

+5VDSP

C104

101J

C103

3.3/50

STEREO

SD

TMUT

220

2.2K

R7038

R7040

R7039

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61626364656667686970717273747576777879

104Z

C7007

R7062

1K

220K

POFF

D7003

R7085 220R7084

12345678

Q704 NC A0 A8

A1 A9

A2 A10

A3 A11

A4 A12

A5 A13

A6 A14

A7 A15

RD RD

NC

R742

_WEF

10

A1511

A1610

VCC8

WE/A18 7

A18/VPP9

DQ426

DQ122

DQ223

DQ325

VSS24

IO1

IO4

IO2

IO3

-VP Q9501

2SA1015-GR

R9506

KTA1266-GR

22

(/2W

C9512 223Z

GND

+22V

-22V SPB

GND

RN1441

NC

NO USE

NC

100

R388

C360

474K

RN2402

VCC8

72

63

5

DSPMCK

D9508

UDZ27D

C6401

104J

P6403

R377

R378

R379

R380

R381

Q313

R382

RN1441

Q306

OR KRA102S

L704 022M

L706

BK1608LM182

L705

BK1608LM182

DSPMCK

LRCK

DSPRST1[L]

+2.5V

R9509 100K

22K

224K

C9511

223Z

C365

C361

NCH-1471

GND

C708103K

100/6.3

NCH-1471

R9508

15K

C9510

220/63

4700/16

LPO

GND

RPO

RSPO

GND

CPO

SUB WOOFER PREOUT

222J

100

SWPO

R385

AMUT

NC

C709105K

R719330

R72047

R7214.7K

C710105K

C711471J

C712104Z

R7221K

R7234.7K

R7244.7K

R72547

C713101J

C716

L701

022M

D9502-9505: RL1N4003

1SR154-400

C9507

D9507

220/35

R9507

15K

C9505

2200/35

D9505

1SR154-400

C9508

P406

D9506

470/35

C9506

D9509

D9510

D9511

D9512

D9504

C9503 104J

D9503

D9502

TO NAAF-7866

P306

P351

104Z

C352

NC

C717

1A1

VCC14

1B2

4A 13

1Y3

4B 12

2A4

4Y 11

3A 10

2B5

2Y6

74HC00/32

GND7

R71833K

CMPREQ/

29 DATA017

LRCLKN2

CLKIN30

CLKSEL31

FILT232

FILT133

VDDA34

VSSA35

RESET36

DD37

AUDATA2

39

022M

L702

NCH1471

Q710

3B 9

3Y 8

Q710 NC

BCK

SDTO

LRCK

R716 330

R717 330

CMPCLK/SCLKN2 28

CMPDAT/RCV958/SDATAN2 27

CS493264-CL

AUDATA041

AUDATA1 40

R72747

R72647

LRDA

R746

BCK

R715 330

LRCKN1 26LRCLK42

Q701

R72847

10

EXTMEM

SDTO

330

R713 47

C707

104Z

R714

VSS3 24

VDD3 23

SDTAN1 22

EXTMEM 21

MCLK44

SCLK43 SCLKN1/STCCLK2 25

VDD11

VSS12

XMT9583

R729

R730

C714

104Z

47

MCK2

C9502

104J

C9501 104J

A8 9

GND10

TC74VHC541FT

Y712

Y811

R7068220

R7067220

DSPCS1[L]

FMEM/SRAM1[L]

DSPCS1[L]

INTREQ1

CDTO/SCDO[L]

220

C704

R706

101J

R708 220

R707 220

C705 101J

47

R70910K

R71010K

R712

R71110K

CS 18

DATA116

SCDIO/SCDOUT 19

DATA215

ABOOT/_INTREQ 20

DATA314

VSS213

VDD212

DATA411

DATA510

DATA6 9

DATA7 8DC38

A0/SCCLK

A1/SCDIN

RD/R/_W5

WR/DA4

6

R70147

R702330

C701101J

R703

4.7K

R75010

R74910

WE

RD

DSPDA[3.3V]

A6 7

A7 8

Q7002

Y514

Y613

R7070220

R7069220

A151[L]

A161[L]

NC

7

C702

101J

R7072220

A171[L]

10K

A5 6

Y415

R757

R756

R755

R754

C703

R753

R752

R751

R748

A3 4

A4 5

Y217

Y316

R7075220

R7074220

R7073220

DSPRST1[L]

DSPCL[3.3V]

DSPDA[3.3V]

+3.3V

R738

R737

R736

R735

R734

R733

R732

R731

NC

C706

100/6.3

R704

R705

DSPCL[3.3V]

R102

NC

Q101

RDSDET

3.3K

R106

NC

AMUT

SELDA

A1 2

A2 3

G1 1

VCC20

Y118

G219

L703 470M

NCH-1479

NC

NC NC

NC

104Z

330

TX-SR402/8240/HT-R420TX-SR402/8240/HT-R420

+22V

SEC1-1

GND

SEC1-2

5.6S

P410B

SPF

SEC1H

VOLH

GND

+13V

P411B

TO NAETC-7868

A

SCHEMATIC DIAGRAMS-2

DISPLAY & VIDEO SECTION

NADIS-7403

BCDEFGH

1

U02

DISPLAY PC BOARD

F2F2NPNPP35

59

2

R7582

100K X 13

Q7504

RN2403

KRA103S

D7502

UDZ5.1B

R7505

220K

D7503 1SS352

3

P34

P33

P32

P31

P30

P29

P28

P27

P26

P25

P24

P23

P22

P21

P20

P19

P18

P17

565758

55

P46/FIP3840

P47/FIP3939

P50/FIP4038

P51/FIP4137

P52/FIP4236

P53/FIP4335

P54/FIP4434

P55/FIP4533

P56/FIP4632

P57/FIP4731

P60/FIP4830

P61/FIP4929

R7532

10K

R7504

47K

R7506 4.7K

R7507 4.7K

SYSOUT

C7507

104Z

P62/FIP5028

P63/FIP5127

P64/FIP5226

VDD025

AVDD24

22:ANI0

VSS023

21:ANI1

22

21

ANI220

ANI319

R7508 4.7K

R7509 4.7K

P16

R7581

100K X 14

43

P37/FIP31 47

P40/FIP32 46

P41/FIP33 45

P42/FIP34 44

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

UPD780232GC-030-8BT

AVSS18

P01/INTP116

P02/TI17

P20/SCK314

POO/INTP015

R7510 1K

R7511 1K

R7512 10K

R7513 10K

R7514 10K

P15

P36/FIP30 48

P21/SO313

FL TUBE

Q7501

16BT123GK

P14

P13

P12

P11

P10P9P8P7P6P5P4P3P2P116G

P31/FIP25 53

P32/FIP26 52

P33/FIP27 51

P34/FIP28 50

P35/FIP29 49

Q7502

P2212

P2311

P24/BUSY10

P25SO19

P26/SI18

P27/SCK17 P30/FIP24 54

R7515 10K

R7516 10K

FIP23 55

61:FIP19

RESET6

15G

14G

13G

12G

11G

10G9G8G7G6G5G4G3G2G1GNPNPF1

101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354

10K

61

VDD2 59

VLOAD 60

FIP20 58

FIP21 57

FIP22 56

FIP18 62

FIP17 63

FIP16 64

FIP15 65

FIP14 66

FIP13 67

FIP12 68

FIP11 69

FIP10 70

FIP9 71

FIP8 72

FIP7 73

FIP6 74

FIP5 75

FIP4 76

FIP3 77

FIP2 78

FIP1 79 FIP0

X13

VDD11

VSS12

X7501

CST5.00MGW

80

IC5

X24

R7503

Q7503

KTC3875

2SC2712

F1 123456789

C7502

100K

R7518

U7501

SPS4441E1

C7514 100/6.3

C7516

104Z

C7517 102J

R7520 2.7K

C7508 102J

R7521 2.7K

C7509 102J

C7510 102J

R7522 2.7K

R7527 10K

C7511 102J

R7523 2.7K

R7526 10K

IRF

STBYLED

C7523 102J

C7522 101J

VAJ

VBJ

R7524 1K

R7517 1K

R7530 1K

R7529 560

R7528 560

C7513 104Z

C7512

474 MMT

4

104Z

C7515

S7501

MASTER VOLUME

S7616

SPEAKERS A

R7615

1.2K

SPEAKERS B

R7614

820

STANDBY /ON

R7613

560

JL7501B

S7614

S7615

NASW-7404

U03

5

SWITCH PC BOARD

K0

K1

SYSIN

JL7501A

GND

KEY0

R7626 2.2K R7621 330R7625 1.2K R7624 820 R7623 560 R7622 470

S7627

FM MODE

S7637

TUNING>

R7646 2.2K

AUDIO

S7647

ADJUST

S7626

S7636

S7646

R7531

D7505

STANDBY

D7505

OR SEL411OR

VIDEO3

TUNING<

<PRESET

220

Q7506

RN1402

KRC102S

SLR56VRTB7

S7625

S7635

S7645

K2

VIDEO2

MEMORY

PRESET>

K3

S7613

S7624

S7634

S7644

VIDEO1

TAPE

DSP

S7623

S7633

S7643

SBMDI

SBMDO

SBMRST

SBMLDY

SBMCLK

R7612 470 R7611 330

S7612

DIMMER

DVD

TUNER

SURROUND

S7622

S7632

S7642

SW MODE

AUDIO

R7631 330R7632 470R7633 560R7634 820R7635 1.2KR7636 2.2K

CD

R7641 330R7645 1.2K R7644 820 R7643 560 R7642 470

STEREO

SEL

S7611

S7621

S7631

S7641

INPUT

DIGITAL

DISPLAY

SP

ADJUST

DIRECT

K0K1K2

100K

1SS352

Q7507RN1402

NO USE

NC

RL7501

P7503A

R7519

D7507

1SS352

K3

220K

NCH1477

L7505

NC

D7504

NC

SYSIN

HPDET

SBMLDY

SBMDI

SBMDO

SBMCLK

SBMRST

-VP

KRC102S

P7502A

TO NADG-7401

TX-SR402/8240/HT-R420TX-SR402/8240/HT-R420

U25

TERMINAL PC BOARD

104Z

C7506

D7501 UDZ8.2B

C7502

C7501 104Z

33/50

NC

C7503 104Z

C7504

C7505

473Z

R7580 10K X 15

R7501 220

473Z

R7502 220

NAETC-7884 NAVD-7867

P206A

+12V GND

A

TO NADG-7401

OPTOUT

P801B

P206B

+12V

GND

A

B

VMUT2

VMUT1

RI

DGND

OPT1

TO NAETC-7884

+5V

COAX

VMUT2

VMUT1

OPT2

DGND

OPT1

COAX

B

RI

+5V

VIN4

VIN3

VCC

LA7956

VIN2

TO NAVD-7867

GND

VIN1

Q203

B

A

VIDEO OUT

U09

VIDEO&OPT TERMINAL PC BOARD

9

8

7

6

220

220KNCH-1452

220K

Q206

R210

Q204

2SA933-S

KTA1267-GR

C285

DTA114ES

KRA102M

47/6.3

Q201

RN1241

C286 223Z

1

2

3

4

5

6

7

5

4

3

2

1

C221

47/16

C222 223Z

P210A

L281

NCH-1452

Q205

KRA102M

DTA114ES

R223

L282

R224

100K

RN1241

Q281

74HCU04

Q202

470/16

14

13

12

11

10

9

8

C203

P253A

R230

R207

R208

R209

470/16

C205

680K

C217

2.2/50

C201

2.2/50

R284

2.2/50

R206

10K

C202

C204

75

R205

C283

223Z

75

C284

D202

D201

C227 223Z

080D

C288

R281

47/6.3

R282

C220

223Z

R202

R204

75

470

R203

C287

R231

R201

C281

223Z

75

100K

C282

223Z

P201

VIDEO

VIDEO-3

OUT

VIDEO-1

IN

DVD IN

MONITOR OUT

P202

DIGITAL INPUT

COAXIAL

P281

L283

022M

101J

U281

DIGITAL INPUT

OPTICAL

P282

IN

INVIDEO-2

RI

100K

D7507

1SS352

C7521

220/6.3

L7504

220K

NCH1477

HPR

HPE

+5.6S

TO NAETC-7868

NAVD-7873

VIN4

9

VIN3

8

VCC

7

LA7956

VIN2

6

GND

5

VIN1

4

Q212

B

3

A

2

VIDEO OUT

1

VIN4

9

VIN3

8

7

VCC

LA7956

6

VIN2

5

GND

4

VIN1

Q213

3

B

2

A

VIDEO OUT

1

HPDET

GND

HPL

HPE

HPR

JL7502A

FAC2

FAC1

HPL

GND

JL7502B

E7501

NC

L7501 022M

NC

L7502 022M

NC

C7518

102J

L7503 022M

C7519

C7520

102J

U04

102J

HEADPHONE JACK PC BOARD

P211B

C223

47/16

C224 223Z

C225

47/16

C226

223Z

P7501

PHONES

NAETC-7405

GND

+12V

B

A

VM2

VM1

NAETC-7874

P210B

TO NAVD-7867

U16

TERMINAL PC BOARD

C207 2.2/50

Q208

RN1241

220

Q209

RN1241

R228

2SA933-S

Q211

RN1241

*KTA1267-GR

Q207

Q210

RN1241

470/16

C208 223Z

C209 2.2/50

C213 2.2/50

C214

223Z

C215

470/16

R227

U15

S VIDEO TERMINAL

P211A

GND

+12V

B

A

VM2

TO NAVD-7873

R225

680K

C210

223Z

C211

R226

680K

C212 223Z

680K

R222 75

R221 75

R212 75

R220 75

R219 75

R218 100K R214 75

R216 75

R211 75

R213 75

75

R215

R217 100K

P203

YC

C232

223Z

YC

P204

Y

C231

223Z

S_VIDEO

VIDEO-2 IN

CY

OUT

VIDEO-1

IN

C

DVD IN

C

MONITOR OUT

PC BOARD

<Notes> NC=No mount of parts.

NOTE

.

THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY

REPLACE ONLY WITH PART NUMBER SPECIFIED. .

VOLTAGE (MEASURED WITHVOLTMETER) 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 u F/WV.

.

ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.

EX) 030- 3pF 330- 33pF 331- 330pF333- 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.

.

IS DC VOLTAGE, AT NO INPUT SIGNAL.

A

SCHEMATIC DIAGRAMS-3

DRIVER AMPLIFIER SECTION

NAAF-7866

BCDEFGH

1

U08

DRIVER AMPLIFIER

1.0V

[1.0V]

C5083 040D

1.0V

[1.0V]

C5084 040D

R5174

R5163

120 (1/4W)

48.1V [61.5V]

C5053 47/50

R5033 56K

-1V

[-1V]

Q5043

-48.1V

[-61.4V]

R5164

120 (1/4W)

48.1V

[61.5V]

Q5034

C5054 47/50

R5034

56K

-1V

[-1V]

Q5044

-48.1V

[-61.4V]

PC BOARD

2

SL

R5003 1K

C5003

101K

R5043

D5003

MTZJ5.6B

2.2K

C5013 22/16

R5013

56K

R5103 100K

R5093 82K [100K]

-0.1V

R5023 330

-43.3V

[-56.5V]

C5023 10/50

R5063

1.2K

R5113 1K

C5033 NC

-0.7V

Q5013Q5003

R5053

4.7K

Q5053

-44V

[-57.1V]

R5073 560

R5083

3.3K

C5103 10/63 [10/100]

C5043 220/16 [100/16]

[0V]

0V

R5133 18K

C5113 10/63 [10/100]

47.5V

[60.7V]

C5073 NC

-47.5V

[-60.6V]

C5093 101J

R5173 120(1/4W)

SR

R5114

R5064

1.2K

1K

C5034 NC

-0.7V

Q5014Q5004

R5054

4.7K

Q5054

-44V

[-57.1V]

R5074

560

R5084

3.3K

C5104 10/63 [10/100]

C5044 220/16 [100/16]

R5094 82K [100K]

C5014

R5004

22/16

1K

3

C5004 101K

R5044

D5004 MTZJ5.6B

2.2K

R5014

56K

R5104 100K

-0.1V

R5024

330

-43.3V

[-56.5V]

C5024 10/50

[0V]

0V

R5134

18K

C5114 10/63 [10/100]

47.5V

[60.7V]

C5074 NC

-47.5V

[-60.6V]

C5094 101J

120(1/4W)

R5183 10 (1/4W)

R5184 10 (1/4W)

[62.1V]

NF

-B1

+B1

B+

B-

R5193 10 (1/4W)

-48.9V

[-62.1V]

48.9V

[62.1V]

NF

-B1

+B1

B+

B-

R5194 10 (1/4W)

-48.9V

[-62.1V]

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 WITHVOLTMETER) 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.

.

4

ELECTROLYTIC CAPACITORS ( )ARE IN u F/WV.

.

ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.

EX) 030- 3pF 330- 33pF 331- 330pF333- 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.

.

IS DC VOLTAGE, AT NO INPUT SIGNAL.

<Notes> NC=No mount of parts. [ ] Values are for HT-R420

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

NO. TX-SR402/ TX-SR8240 HT-R420 Q5000-04,5010-14 KTC3200-BL OR 2SC1775A-E,F OR 2SC1845-E KTC3200-BL OR 2SC1775A-E,F OR 2SC1845-E

Q5030-34 KTA1024-Y,O OR 2SA949-Y,O KTA1024-Y,O OR 2SA949-Y,O Q5040-44 KTC3206-Y,O OR 2SC2229-Y,O KTC3206-Y,O OR 2SC2229-Y,O Q5050-54 KTC3199-GR,2SC1740S-R,S,2SC2458-GR KTC3200-BL,GR OR 2SC1775A-E,F OR 2SC1845-E,F

5

TO NADG-7401

ECESLESRERE

L

TX-SR402/8240/HT-R420TX-SR402/8240/HT-R420

P306A

E E E E E E E

TO NAAF-7875

E E

P6011A

L

R5000 1K

C5000

101K

R50402.2K

D5000

MTZJ5.6B

R5001 1K

C5001

101K

R5041

D5001 MTZJ5.6B

R

2.2K

C5010 22/16

C5011 22/16

R5101 100K

R5010

56K

R5100

100K

R5011

56K

R5090 82K [100K]

-0.1V

R5020 330

-43.3V

[-56.5V]

C5020 10/50

R5091 82K [100K]

-0.1V

R5021

330

-43.3V

[-56.5V]

C5021 10/50

R5060

1.2K

R5061

1.2K

R5110 1K

C5030 NC

-0.7V

R5111

1K

C5031 NC

-0.7V

Q5010Q5000

R5050

4.7K

Q5050

-44V

[-57.1V]

R5070

560

R5051

4.7K

Q5051

-44V

[-57.1V]

R5071

560

R5160

1.0V

[1.0V]

C5080 040D

R5170

1.0V

[1.0V]

C5081 040D

R5171

120 (1/4W)

48.1V

[61.5V]

Q5030Q5033

C5050 47/50

R5030

56K

-1V

[-1V]

Q5040

-48.1V

[-61.4V]

R5161

120 (1/4W)

48.1V

[61.5V]

Q5031

C5051 47/50

R5031 56K

-1V

[-1V]

Q5041

-48.1V

[-61.4V]

47.5V

[60.7V]

C5070 NC

C5100 10/63 [10/100]

C5040

220/16

[100/16]

R5080

3.3K

Q5011Q5001

C5101 10/63 [10/100]

C5041

220/16

[100/16]

R5081

3.3K

[0V]

0V

R5130

18K

C5110 10/63 [10/100]

[0V]

0V

R5131 18K

C5111 10/63 [10/100]

-47.5V

[-60.6V]

47.5V

[60.7V]

C5071 NC

-47.5V

[-60.6V]

C5090 101J

120(1/4W)

C5091

101J

120(1/4W)

R5180

10

(1/4W)

R5181 10 (1/4W)

48.9V

[62.1V]

NF

-B1

+B1

B+

B-

R5190

10

(1/4W)

-48.9V

[-62.1V]

48.9V

[62.1V]

NF

-B1

+B1

B+

B-

R5191

10

(1/4W)

-48.9V

[-62.1V]

P6000A

TO NAAF-7875

P6001A

TO NAAF-7875

R5002 1K

C5002

101K

R5042

2.2K

D5002

MTZJ5.6B

C

C5012 22/16

R5102

R5012

56K

100K

R5092

82K

[100K]

-0.1V

R5022

330

-43.3V

[-56.5V]

C5022 10/50

R5062

1.2K

R5112

1K

C5032 NC

-0.7V

Q5012Q5002

R5052

4.7K

Q5052

-44V

[-57.1V]

R5072

560

R5082

3.3K

C5102 10/63 [10/100]

C5042 220/16 [100/16]

[0V]

0V

R5132

18K

C5112 10/63

[10/100]

47.5V

[60.7V]

C5072 NC

-47.5V

[-60.6V]

1.0V

[1.0V]

C5082

040D

C5092

101J

R5172 120(1/4W)

R5162

120 (1/4W)

48.1V

[61.5V]

Q5032

C5052 47/50

R5032

56K

-1V

[-1V]

Q5042

-48.1V

[-61.4V]

R5182

10

(1/4W)

48.9V

[62.1V]

NF

-B1

+B1

B+

B-

R5192

10

(1/4W)

-48.9V

[-62.1V]

P6002A

TO NAAF-7875

A

SCHEMATIC DIAGRAMS-4

POWER AMPLIFIER SECTION

NAAF-7875

1

2

3

4

SL

TO NAAF-7866

SR

TO NAAF-7866

<Notes> NC=No mount of parts. [ ] Varues are for HT-R420

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

NO. TX-SR402/TX-SR8240 HT-R420

Q6010-6014 2SC1740S-R,S 2SC1740S-R,S

Q6020-6024 2SC1740S-R,S 2SC1740S-R,S

Q6030-6031 KTD2061-Y OR 2SC5171 KTD2061-Y OR 2SC5171

Q6040-6041 KTB1369-Y OR 2SA1930 KTB1369-Y OR 2SA1930

Q6032-6034 2SC5511-E OR KTD2061-Y OR 2SC5171 KTD2061-Y OR 2SC5171

Q6042-6044 2SA2005-E OR KTB1369-Y OR 2SA1930 KTB1369-Y OR 2SA1930

Q6050-6051 2SC5198-R,O OR MN130S-Y,P,O 2SC5242-R,O OR MN150S-Y,P,O

Q6052-6054 MN100S-Y,P,O OR KTD1047-Y,O KTC5242-O,R OR MN130S-Y,P,O OR 2SC5242-O,R

Q6060-6061 2SA1941-R,O OR MP130S-Y,P,O 2SA1962-R,O OR MP150S-Y,P,O

Q6062-6064 MP100P-Y,P,O OR KTB817-Y,O KTA1962-O,R OR MP130S-Y,P,O OR 2SA1962-O,R

Q6070-6074 KTC3200-BL,GR OR 2SC1775A-E,F OR 2SC1845-E,F 2SC2631-R,S

Q6601-6603,Q6901 KTC3199-GR,2SC1740S-R,S,2SC2458-GR KTC3199-GR,2SC1740S-R,S,2SC2458-GR

Q6701,6702 KTC3200-BL,GR OR 2SC1775A-E,F OR 2SC1845-E,F KTC3200-BL,GR OR 2SC1775A-E,F OR 2SC1845-E,F

Q6703 KTA1268-GR,BL OR 2SA992-E,F KTA1268-GR,BL OR 2SA992-E,F

Q6303 KTA1267-GR OR 2SA933S-R,S KTA1267-GR OR 2SA933S-R,S

BCDEFGH

U17

POWER AMPLIFIER PC BOARD

R6033

1K

[390]

R6003

5.6K

P6003

R6013

3.9K

NF

-B1

+B1

B+

B-

P6004

NF NF

-B1 -B1

+B1 +B1

B+ B+

B- B-

R6043

1K

R6053

3.9K

R6034

1K

[390]

R6004

5.6K

R6014

3.9K

R6044

1K

R6054

3.9K

R6023

R6024

[0.2V]

IID

[-0.3V]

[0.2V]

IID

[-0.3V]

0.2V

-0.3V

0.2V

[1V]

-0.3V

1V

[1V]

[-62.1V]

Q6013

-0.3V

[-0.3V]

-48.9V

[-62.1V]

1V

Q6014

-0.3V

[-0.3V]

-48.9V

1.1V

[1.1V]

1.1V

[1.1V]

Q6023

-1.1V

[-1.1V]

Q6024

-1.1V

[-1.1V]

[0.5V]

R6073

[110]

(1/4W)

Q6043

R6074

[110]

(1/4W)

Q6044

0.5V

100

-0.5V

[-0.5V]

0.5V

[0.5V]

100

-0.5V

[-0.5V]

Q6033

C6043 47/50

Q6034

C6044 47/50

R6133

C6033

R6134

C6034

P6083

ID+

ID-

P6084

ID+

ID-

R6083

(1/4W)

R6093

2.2

(1/4W)

R6084

(1/4W)

R6094

2.2

(1/4W)

2.2

[0.5V]

0.22 X2

-0.5V

[-0.5V]

C6233

473J

R6233

8.2 (1W)

0.5V

[0.5V]

0.22 X2

-0.5V

[-0.5V]

C6234

473J

R6234

8.2 (1W)

0.5V

[0V]

0V

R6103

(2W)

0V

[0V]

R6104

(2W)

48.9V

[62.1V]

Q6053

R6143 22K

0V

[0V]

Q6063

R6173 47K

D6003

48.9V

[62.1V]

Q6054

R6144 22K

0V

[0V]

Q6064

R6174 47K

D6004

R6153

12K

R6154

12K

R6163

Q6073

R6164

Q6074

33K

R6193

220K

[330K]

D6013

R6183

47K

R6194

220K

[330K]

D6014

R6184

47K

E -B1

E +B1

EB+

EB-

E

P6011

C6901, 6902 TX-SR402/ 8240 -----

C6901

D6902

D6901

P6906

C6902

C6903 104J

NONE

5

P931

+13VS SPF

+13VS +13VS PRO

MPUGND POWER

MPUGND +13VS

POWER POWER RLGND

TO NAPS-7877

C6708 223Z

D6706

D6705

NC

8200/56 10000/69HT-R420 ---------------

D6904

D6903

D6903,6904:

C6907 104J

C6905 334J [334J /100]

C6904 334J [334J /100]

C6906 104J

F6901

JL6951A

RBV602 D5SBA20 RS603M

RL6902

D6906

RL6901

TO NAPS-7878

F6902

JL6952A

TO NAPS-7878

C6920

0.1V [0.1V]

Q6901

[0.8V]

0.8V

NOTE

.

THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY

REPLACE ONLY WITH PART NUMBER SPECIFIED. .

VOLTAGE (MEASURED WITHVOLTMETER) 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 u F/WV.

.

ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.

EX) 030- 3pF 330- 33pF 331- 330pF333- 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.

.

NC

IS DC VOLTAGE, AT NO INPUT SIGNAL.

R6902 1K

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

F6901TYPE F6902

DD, DC 8A-UL,8A-T/UL-ST2 8A-UL,8A-T/UL-ST2

PA, PT 8A-EAK 8A-EAK

GR 8A-EAK 8A-EAK

WT 8A-EAK 8A-EAK

TX-SR402/8240/HT-R420TX-SR402/8240/HT-R420

TO NAAF-7866

P6011

L

P6000

NF

TO NAAF-7866

R

P6001

TO NAAF-7866

C

P6002

NF

-B1

+B1

B+

TO NAAF-7866

B-

R6030

[390]

R6000

5.6K

R6010

3.9K

R6040

R6050

3.9K

R6031

[390]

R6001

5.6K

R6011

3.9K

R6041

R6051

3.9K

R6032

[390]

R6002

5.6K

R6012

3.9K

R6042

R6052

3.9K

0V

R6100

(2W)

0V

[0V]

R6101

(2W)

[0V]

R6102

(2W)

48.9V

[62.1V]

R6160

Q6050

33K

Q6070

R6140 22K

R6150

0V

[0V]

Q6060

R6170 47K

D6000

12K

R6190

220K

[330K]

D6010

R6180

47K

TX-SR8240 MGR TX-SR402 MGR HT-R420 MPA, MPT, MWT

NAETC-7880

THERMAL SENS.

R6380

JL6402C

U22

THERMAL SENSOR

PTFL04BE471Q

48.9V

[62.1V]

R6161

Q6051

33K

Q6071

R6141 22K

R6151

12K

0V

[0V]

Q6061

Q6052

0V

R6142 22K

[0V]

Q6062

R6171 47K

D6001

48.9V

[62.1V]

R6152

12K

0V

R6172 47K

D6002

R6162

Q6072

33K

R6191

220K

[330K]

D6011

R6181

47K

R6192

220K

[330K]

D6012

R6182

47K

R6306

P6301

TH1

COM

+24V

TH1

D6307

D6306

R6307

10K

2.2K

R6851

390

(1/2W)

2N34B0(90)

HT-R420 MDC,MDD

NAETC-8256

THERMAL SENS.

JL6402A

JL6402B

PTFL04BE471Q 2N34B0(90)

24V

Q6303

0V

R6308

4.7K

JL6804A

LSPE

RSPE

CSPE

LSSPE

RSSPE

JL6803A

LSP

RSP

CSP

LSSP

RSSP

R6850

390

(1/2W)

R6380

TO NAETC-7870

PC BOARD

U26

THERMAL SENSOR PC BOARD

1.1V

[1.1V]

1V

1K

[1V]

0.2V

[0.2V]

Q6010

-0.3V

R6020

[-0.3V]

-0.3V

-48.9V

[-62.1V]

1V

[1V]

Q6011

[-0.3V]

1V

[1V]

Q6012

[-0.3V]

-48.9V

[-62.1V]

-0.3V

-48.9V

[-62.1V]

-0.3V

[1.1V]

Q6020

[-1.1V]

1.1V

Q6021

1.1V

Q6022

IID

1K

-0.3V

[-0.3V]

1K

0.2V

[0.2V]

R6021

IID

1K

-0.3V

[-0.3V]

1K

0.2V

[0.2V]

R6022

IID

1K

[-0.3V]

-1.1V

[-1.1V]

-1.1V

[-1.1V]

R6070

[110]

(1/4W)

[-0.5V]

Q6040

R6071

[110]

(1/4W)

[-0.5V]

Q6041

R6072

[110]

(1/4W)

Q6042

0.5V

[0.5V]

100

-0.5V

0.5V

[0.5V]

100

-0.5V

0.5V

[0.5V]

100

-0.5V

[-0.5V]

Q6030

C6040 47/50

Q6031

C6041 47/50

Q6032

C6042 47/50

R6130

C6030

R6131

C6031

R6132

C6032

P6080

ID+

ID-

P6081

ID+

ID-

P6082

ID+

ID-

R6080

(1/4W)

R6090

2.2

(1/4W)

R6081

(1/4W)

R6091

2.2

(1/4W)

R6082

(1/4W)

R6092

2.2

(1/4W)

2.2

0.5V

[0.5V]

0.22 X2

-0.5V

[-0.5V]

C6230

473J

R6230

8.2 (1W)

0.5V

[0.5V]

0.22 X2

-0.5V

[-0.5V]

C6231

473J

R6231

8.2 (1W)

0.5V

[0.5V]

0.22 X2

-0.5V

[-0.5V]

C6232

473J

R6232

8.2 (1W)

[0V]

100/6.3

[220/6.3]

C6701

D6701

0V

[0V]

R6702

10K

R6701

22K

R6708

Q6701 Q6702

C6703

223Z

+B1

48.9V

[62.1V]

33K

50V

[63.1V]

C6704

1/50

D6702

48.9V

[62.1V]

Q6703

0V

[0V]

R6704

47K

D6703

MTZJ5.1B D6704

C6706

100/6.3

R6706

220K

MTZJ5.1B

R6709 5.6K

R6710

56K

[12K]

0.05V

R6601

24V

Q6602Q6603Q6601

0.8V

R6603

1K

R6602

1K

0V0V

BRLD

FRLD

CSRLD

+24V

HPL

HPR

E

+24V

MPUGND

VOLH/THPRO

SEC1H

SPB

SPCS

JL6805A

TO NAETC-7870

P6931

TO NAETC-7868

A

BCDEFGH

SCHEMATIC DIAGRAM-5

SPEAKER TERMINAL & POWER SUPPLY SECTION

F902

WT TYPE

TX-SR402 ONLY

L6800 S1.3C

R6800 22

R6810 22

HT-R420 ONLY

TX-SR402 ONLY

L6801 S1.3C

R6801 22

R6811 22

HT-R420 ONLY

TX-SR402 ONLY

L6802 S1.3C

R6802 22

R6812 22

HT-R420 ONLY

TX-SR402 ONLY

L6803 S1.3C

R6803 22

R6813 22

HT-R420 ONLY

TX-SR402 ONLY

L6804 S1.3C

R6804 22

R6814 22

HT-R420 ONLY

P912AP912

P911A

P911

P912AP912

P911A

P911

F902

P913

P912

F901

P911 P911A

J

T901

NAPS-7876

THERMAL FUSE

7

T901

NAPS-7876

THERMAL FUSE

7

P913A

T901

1

P912A

3

NAPS-7876

THERMAL FUSE

7

NAETC-7870

1

JL6803B

LSP

RSP

CSP

LSSP

RSSP

TO NAAF-7875

2

JL6805B

BRLD

FRLD

CSRLD

+24V

TO NAAF-7875

LSPE

3

RSPE

CSPE

LSSPE

RSSPE

JL6804B

TO NAAF-7875

T902

T2.5AL250V

F903

P902

AC OUTLET 100WMAX

GR TYPE

4

T902

T2.5AL250V

T902

VOLTAGE

SELECTOR

220V

5

120V

F903

P902

AC OUTLET

100WMAX

S902

F903

P902

AC OUTLET

100WMAX

PA, PT TYPE

T2.5AL250V

C6600 103J

D6600

RL6600

RL6601

D6601

C6601 103Z

U12

SPEAKER TERMINAL PC BOARD

FRONT SPEAKERS-B

FRONT SPEAKERS-A

P/W/G TYPE ONLY

RL6603

RL6604

D6604

C6604 103J

NO USE

NASW-7882

P917

P918

P901A

AC-H

AC-G

C902 472M

/250VAC

NC

J6306

POWER S906

P917A

NC

P918A

TYPE AC IN

DD, DC 120V 60HZ

PA, PT 230-240V 50HZ

P901

GR 220V 50/60HZ

JJ -

WT 120V/220V 50/60HZ

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

T902

TYPE

DD, DC NPT-1492D

PA, PT NPT-1358P

GR NPT-1358DG

JJ -

WT NPT-1358DG

TX-SR402/TX-SR8240

TYPE F901 F902

DD, DC - -

PA, PT - -

GR NO T3.15AL250V

JJ - -

WT - -

C6840 102J

C6841 102J

P6800

C6850 102K

C6851

102K

L

C6855

R

L

102K

C6856

102K

R

C6852

C6842 102J

P6802

CENTER

SPEAKER

102K

L

R

SURROUND SPEAKERS

C6843 102J

C6844 102J

U19

C6853

102K

C6854

102K

NAPS-7877

POWER SUPPLY PC BOARD

J5320

R921

C923

E921

D921-D924 GP104003E OR RL1N4003

T902

[ ] VALUES ARE FOR HT-R420

HT-R420

TYPE F901

DD, DC 8A/125VNONO

PA, PT T3.15AL250V

WT 8A/125V T3.15AL250V

C922

220/35

C921

223Z

SEE LEFT DIAGRAM

FOR OTHER TYPE

D921

D923

HT-R420

D922

D924

F903

5A/125V

R924 82

(1/2W)

D925

F902

R926

4.7K

Q921

R923

2SC2458-GR KTC3199-GR

2SC1740S-R,S

0.1V

[0.1V]

RL901

C901 103M /275VAC

F901

P902

AC OUTLET D:120W

+13VS

MPUGND

POWER

1K

P912

1A MAX

P911

U18

TERMINAL PC BOARD

NOTE

.

THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY

REPLACE ONLY WITH PART NUMBER SPECIFIED. .

VOLTAGE (MEASURED WITHVOLTMETER) 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 u F/WV.

.

ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.

EX) 030- 3pF 330- 33pF 331- 330pF333- 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.

.

IS DC VOLTAGE, AT NO INPUT SIGNAL.

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

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.

<Notes> NC=No mount of parts.

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

T901

TYPE TX-SR402/8240 HT-R420 DD, DC PA, PT GR JJ WT

TO NNAF-7875

P931A

P912A

NAPS-7876

P911A

NAETC-7868

TX-SR402/8240/HT-R420TX-SR402/8240/HT-R420

-

NPT-1491D

-

NPT-1463G -

NPT-1491P

--

-

NPT-1491DG

CAUTION

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

VA

AND RATING INDICATED.

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.

U10

REGULATOR PC BOARD

Q6931

NJM78M56FA

C6933 10/16

G

IO

D6933

R6935

120

(2W)

S3GND

+13VS

POWER

PRO

TO NAAF-7875

C6932

103Z

C6931

1000/25

D6932

D6932,6933:

GP104003E OR

RL1N4003

SPF

SPCS

SPB

VOLH/THPRO

SE1H

MPUGND

+24V

AGND

HPR

HPL

P6931A

FLAC1

FLAC2

MPUGND

HPL

AGND

HPR

+5.6V

+24V

S3

S3GND

+5.6V

POWER

SPF

SPCS

SE1H

SPB

VOLH/THPRO

PRO

MPUGND

+13VS

P7503B

P410A

S3

S2

P411A

TO NADIS-7403

TO NADG-7401

TO NNAF-7875

P912A

3

NAPS-7876

THERMAL FUSE

7

P911A

T901

NAETC-7869

U11

TERMINAL PC BOARD

R9521

2.7 [3.9]

8

9

10

11

12

13

14

15

16

17

18

19

JL6951B

TO NAAF-7875

(1/2W)

R9502

0.47 (1/2W)

R9501

1 (1/2W)

R9503

0.22 (1/2W)

TO NAAF-7875

NC

F9501

C9513 223Z

U20

JL9501B

JL9501

NAPS-7878

TERMINAL PC BOARD

JL6952B

PC BOARD CONNECTION DIAGRAM

U12

NAETC-7870

AC IN

SPEAKER TERMINAL PC BOARD

JL6805B

P6801 P6800

RL6603

JL6804B

RL6600

JL6803B

HT-R420 MDC,MDD ONLY

JL6402B

U26

NAETC-8256

THERMAL SENSOR PC BOARD

TX-SR8240 MGR HT-R420 MPA,MWT TX-SR402 MGR ONLY

JL6402C

AM ANTFM ANT

TUNER UNIT

TX-SR402/8240/HT-R420

U15

NAVD-7873

S VIDEO TERMINAL PC BOARD

P204

P203

P211B

P202

P201

U16

NAETC-7874

TERMINAL PC BOARD

P211A

U09

P210B

NAVD-7867

VIDEO&OPT TERMINAL PC BOARD

P281

U17

NAAF-7875

POWER AMPLIFIER PC BOARD

JL6952A

P931

JL6951A

S902

U19

NAPS-7877

POWER SUPPLY PC BOARD

P902P902

P912

P901A

P911

P911A

P912A

POWER TRANSFORMER

U11

NAETC-7869

TERMINAL PC BOARD

JL9501B

JL6805A

C6901

C6902

P931A

P6072

U23

NAETC-7881

HOLDER PC BOARD

U18

NAPS-7876

TERMINAL PC BOARD

U20

NAPS-7878

TERMINAL PC BOARD

JL6951B

JL6952B

JL6402A

JL6804A

P6011

P6001

P6072A

P6002

P6003

P6004

P6073A

P6908

U04

NAETC-7405

HEADPHONE JACK PC BOARD

U22

NAETC-7880

THERMAL SENSOR PC BOARD

JL6803A

P6000

P6931

P6931A

U03

NASW-7404

SWITCH PC BOARD

JL7501B

JL7502B

P7501

JL9501

P6000A

P6011A

P6001A

P6002A

P6003A

P6004A

P6073

U08

NAAF-7866

DRIVER AMPLIFIER PC BOARD

JL7501A

JL7502A

P305

P406A

P306A

P302P304

P301

P351

P801

P306

P101

U01

NADG-7401

PREAMPLIFIER PC BOARD

P7502B

P410B

P411B

P410A

P411A

U10

NAETC-7868

REGULATOR PC BOARD

P7503B

Q7501

FL TUBE

P7503A

U7501

U02

NADIS-7403

DISPLAY PC BOARD

JUMPER WIRE SOCKET

FLAT CABLE BOARD TO BOARD

P210A

P206B

P801B P206A

U25

NAETC-7884

TERMINAL PC BOARD

P7502A

S7501

TX-SR402/8240/HT-R420

01

C10

103CC

C

000

C183

C184

5

C185

C186

C

C187

2

3

023

4

5

67890

2 6

C

C328

C329

C3

C330

C331

331

C333

348

3

4

121

4

70557

1

716

6

7

8

9

1

32

803

806

9

813

814

4

815

3

0

3

4

2

9

00

4

1

70

0 0

0101

4

01

5

306

2

01

8

7

8

0

6

7003

4

9

2

3

888

8

300

0

3

7

2

7

20

24

32

34

5

6

3

4

2

0

05

706

6

7

789

7

0

1

2

3

4

5

6

7

1

5

1

2

3

4

5

3

746

748

749

0

75

5

8

0

8

0

3

4

1

3845

1

0

412

5

6

7

8

9

000

3

0

70

5

6

8

06

07

0

07

7

5

0

X801

X7001

0 1

1

7

6

74

374

C

A

PRINTED CIRCUIT BOARD VIEWS-1

30

21

3

321

1

U1 PREAMPLIFIER

PC BOARD (NADG-7401)

Both side view from component side

2

R

84

853

837

816

81 819

R82

BCD

301

P34

Q303

327

84

835

4 8

39

80

35

30

331344

51P

P351

2

385

R

1

1P

0

71

3

72

700

7

2

7

3

1

2

7

705

7

1

7

2

D77

Q7008

700

4

C9508

706

C95

7

1

5

0C951

9

95

1

9

95

64

640

64

5

TX-SR402/8240/HT-R420

000

2

3

023

4

5

67890

2

3

6

7

50

1

7

716

6

9

173

2

803

0

3

5

3

4

2

09

08

0

1

0

2

4

9

70

0

0305

306

1

502BB

8

7

8

0

1

406

9

0

123

5

6

0

3

2

7

20

3 32

4 48

3

67

8

69

0

8

2

1

9

5

7

748

75

5

6

7

8R819

0

3

02

0

00

1

2

5

6

7

9

000

3

0

7054

058

06

07

0

07

7

5

22

0

33

1

74

374

C

88

A

PRINTED CIRCUIT BOARD VIEWS-2

1

351

365

385

38

300

1

801

35

7

6

80

7

2

4

360

1

307

344

R

BCD

P3

4

3

21

3

321

3

R

1

U1 PREAMPLIFIER

303

2

PC BOARD (NADG-7401)

853

4

332

4

80

R84

4

836

816

R81

4

1

R82

801

Both side view from reverce side

711

3

7004

7008

7

770

7

2

705

7

10

73

1

72

7004

4

706

9

1

9511

95

D

D9510

4

5

404

5

950

P41

TX-SR402/8240/HT-R420

A

PRINTED CIRCUIT BOARD VIEWS-3

U2 DISPLAY PC BOARD

1

2

(NADIS-7403)

Component side view from soldering side

2 2 2

S7632 S7633

CD

J7530

TUNER TAPE

BCD

-VP

22

J7524

J7549

J7544

15

STEREO DIRECT

J7543

C7502

J7502

J7542

J7548

12

HPMUT SBMRST SBMCLK

SBMDO

SBMDI SBMLDY

HPDET

SYSIN

GND

+5.6V

HPR HPE HPL GND

GND FLAC FLAC

P7502A

P7503A

ADJUST

SP

TUNING TUNING

UP DOWN

2

S7647

J7501

J7513

7

J7514

1

NCDIS-7403

25137403B

7

J7510

J7511

ADJUST

AUDIO

J7552

17

J7518

J7529

S7631

J7515

J7519

S7637

30

S7645

S7646

12

2 2

ADJUST

J7526

PRESET

J7527

J7539

C7514

J7537

S7644

S7643

S7501

J7538

22

J7553

VCC

VOUT

GND

S7501

S7642

DSP SURROUND

S7641

C7521

U7501

15

S7634

3

J7554

J7522

7

J7521

S7626

S7625

S7623S7624

AUDIO

S7622

J7531

J7536

7

15

VIDEO3

4

DVDVIDEO1VIDEO2

SELECTER

22222

15

MODE

MEMORY

INPUT

MODE

DIMMER DISPLAY

FM

20

J7535

J7534

DIGITAL

SW

S7613 S7621

J7532

17

J7523

S7636

222

S7635

22

S7627

C7512

7

J7533

S7611 S7612

2

15

J7504

12

J7503

7

J7541

2

17

J7517

20

J7516

2 2

J7509

22

J7520

22

J7508

5

HPDET

GND

HPR

HPE

HPL

JL7502A

30

27

J7525

J7528

J7512

J7540

Q7501

X7501

7

D7505

J7507

J7506

12

J7547

12

J7550

J7546

JL7501A

7

RL7501

J7551

J7545

R7580

Q7501

R7581

R7582

7