Onkyo TX-SR504 Manuel utilisateur

TX-SR504/504E/8450

SERVICE MANUAL

AV RECEIVER

TX-SR504 Black, Silver and Golden models

MODEL TX-SR504

MODEL TX-SR504E

MODEL TX-SR8450

120V AC, 60Hz

120/220-240V AC, 50/60Hz

220-230V AC, 50/60Hz

B MDD, B MDC, S MDC

B MWT, S MWT, G MWT

G MGR, G MGQ, G MGK

Ref. No. 3927

042006

220-230V AC, 50/60Hz

TX-SR504E Black and Silver models

TX-SR8450 Golden models

B MPP, S MPP 230-240V AC, 50Hz

G MGR

RC-647M

MASTER VOLUME

VIDEO

STANDBY

TONE DISPLAYSTEREO DIMMER MEMORY

DIGITAL

INPUT

TUNING

MODEAB

SPEAKERS

TUNERTAP E

VIDEO 3VIDEO 2VIDEO 1

VCR

DVDMULTI CH C

DSETUPRETURN

CLEAR

LISTENING MODE

AUDIOLR

VIDEO 3INPUT

STANDBY/ON

PHONES

TUNING PRESET

ENTER

MUTING

GUIDE

TOP MENU

SP A

SETUPRETURN

PLAYLIST/CAT PLAYLIST/CAT

RANDOM

SUBTITLE

PLAY MODE

AUDIO REPEAT

RC-647M

---

TAPE

D/CDR

HDD

CABLE

ON/STANDBY

DIMMER

ENT

D TUN

SLEEP

10 11 12

INPUT SELECTOR

HDDDVDVCR

REMOTE MODE

DTAPE TUNER

DVD

MULTI CH

LISTENING MODE

DISPLAY

TEST

TONE

CH SEL

SURROUND

STEREO

CINE FLTR

LEVEL

L NIGHT

VOL

SAT

VCR

DVD

RECEIVER

INPUT

+10

CLR

123

456

789

ENTER

DISC

ALBUM

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.

TX-SR504/504E/8450

SERVICE PROCEDURE

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.

2. To initialize the unit

The AV receiver uses a battery-less memory backup system in order to retain radio presets and other settings

when it's unplugged or in the case of a power failure.

Although no batteries are required, the AV receiver must be plugged into an AC outlet in order to charge the

backup system. Once it has been charged, the AV receiver will retain the settings for several weeks,

although this depends on the environment and will be shorter in humid climates.

1. Press and hold down VIDEO 1/VCR button, then press STANDBY/ON button when the unit is powered 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. Memory Backup

<Note>

Main microprocessor Q701 only.

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

The version will be displayed on FL display only for 3 seconds.

2. Press STANDBY/ON button to power off.

3. To check version of microprocessor

Ver.1.01/05305a

Ex.

REF NO.

F901

F901 or

F901

F901 or

F901

F901 or

F901

F901 or

F902

F902 or

F903

F903 or

F903

F903 or

F903

F903 or

F6901

F6901 or

F6902

F6902 or

PART NAME

FUSE

DESCRIPTION

8A-UL/T-233

8A-T/UL-ST2

4A-SE-EAK

4A-SE-TL250V

4A-SE-EAK

4A-SE-TL250V

4A-SE-EAK

4A-SE-TL250V

4A-SE-EAK

4A-SE-TL250V

5A-UL/T-233

5A-T/UL-ST2

2.5A-SE-EAK

2.5A-SE-TL250V

2.5A-SE-EAK

2.5A-SE-TL250V

10A-UL/T-233

10A-T/UL-ST2

10A-UL/T-233

10A-T/UL-ST2

PART NO.

252329GR

252261GR

252077GR

252277GR

252077GR

252277GR

252077GR

252277GR

252077GR

252277GR

252326GR

252258GR

252075GR

252275GR

252075GR

252275GR

252330GR

252333GR

252330GR

252333GR

REMARKS

!, <DD, DC>

!, <WT>

!, <GR, GQ, GK>, <8450>

!, <PP>

!, <WT>

!, <DD, DC>

!, <WT, PP>

!, <GR, GQ, GK>, <8450>

<Notes>

<DD> : TX-SR504 USA model

<DC> : TX-SR504 Canadian model

<PP> : TX-SR504E European model

<WT> : TX-SR504 World wide model

<GR> : TX-SR504 Chinese model only

<GQ> : TX-SR504 Hong kong model only

<GK> : TX-SR504 Korean model only

<8450> : TX-SR8450 Chinese model only

OPERATION CHECK-1

SPEAKER PROTECT-1 (DC VOLTAGE DETECTION)

TX-SR504/504E/8450

1. Press and hold down CD button, then press STANDBY/ON button while the unit is powered on.

" Test - _ " is displayed only for 5seconds.

2. Press VIDEO 3 button while the characters of " Test - _ " are displayed.

The unit will be in the state of " Test-4-00 ".

3. Repeatedly press TONE+ button until the characters of " Test-4-21 " are displayed.

[Procedure]

<Note>

No load. No input.

Test - _

Test - 4-00

[When]

1. Exchange power transistors (Q6050 - Q6056, Q6060 - Q6066).

2. Exchange amplifier PC board ass'y (NAAF-8779).

Test - 4-21

Check whether the operation starts and continues automatically as follows.

Test - 4-21

Test - 4-22

Test - 4-25

Test - 4-23

Test - 4-24

Protect OK

Protect

Protect OK

Test - 4-35

Clear

Turn off

Front L ch

Check

If all channels are OK, the characters of " Test-4-35 " are displayed.

4. Press STANDBY/ON button.

Front R ch

Check

Center ch

Check

Surround L ch

Check

Surround R ch

Check

Blinks

Test - 4-26

Protect OK

Surround Back L ch

Check

Test - 4-27

Protect OK

Surround Back R ch

Check

TX-SR504/504E/8450

OPERATION CHECK-2

SPEAKER PROTECT-2 (CURRENT DETECTION)

1. Press and hold down CD button, then press STANDBY/ON button while the unit is powered on.

" Test - _ " is displayed only for 5 seconds.

2. Press VIDEO 3 button, while " Test - _ " is displayed.

The unit will be in the state of " Test-4-00 ".

3. Repeatedly press TONE+button until " Test-4-35 " is displayed.

4. Connect the dummy load of 3 ohms to the Front L ch speaker terminals.

At this time, confirm that the speaker relay is not turned off.

5. Connect the dummy load of 1 ohm to the Front L ch speaker terminals.

At this time, confirm that the speaker relay is turned off and " Protect " is displayed.

Disconnect the dummy load immediately after checking the display of " Protect ".

6. Check other channels according to the same procedure as 4 and 5.

[Procedure]

<Note>

No input.

Do not check two or more channels at the same time.

Do not connect a dummy load to speaker terminal longer than 2 seconds.

Test - _

Test - 4-00

[When]

1. Exchange power transistors (Q6050 - Q6056, Q6060 - Q6066).

2. Exchange amplifier PC board ass'y (NAAF-8779).

Test - 4-35

Clear

Turn off

7. Press the STANDBY/ON button.

Test - 4-35

Protect

Test - 4-35

Blinks

TX-SR504/504E/8450

OPERATION CHECK-3

CONTROL OF POWER SUPPLY (OUTPUT SENSOR AND THERMAL SENSOR)

Test - _

Test - 4-00

Test - 4-36

Clear

Turn off

Blinks

Ver. 1.01/06222A

<Ex.>

<Ex.> T: 25 C/ 77 F

Clear

Turn off

Output sensor

1. Press and hold down CD button, then press STANDBY/ON button while the unit is powered on.

" Test - _ " is displayed only for 5 seconds.

2. Press VIDEO 3 button while " Test - _ " is displayed.

The unit will be in the state of " Test-4-00 ".

3. Repeatedly press TONE+ button until " Test-4-36 " is displayed.

Test - 4-36

FM STEREO

4. At this time, confirm that the red characters of " FM STEREO " is displayed.

And, confirm that the relays RL6901 and RL6902 are turned off in 2 or 3 seconds.

6. Press STANDBY/ON button.

[Procedure]

<Note>

No output. No input.

[When]

1. Exchange power transistors (Q6050 - Q6056, Q6060 - Q6066).

2. Exchange power amplifier PC board ass'y (NAAF-8779).

3. Exchange thermal sensor PC board ass'y (NAETC-8781).

Thermal sensor

1. Press and hold downDISPLAY button, then pressSTANDBY/ON button when the unit is powered on.

The microprocessor version will be displayed for 3 seconds.

2. Press TONE button while the version is displayed.

4. Press STANDBY/ON button.

Test - 4-37

FM STEREO

5. Press TONE+ button and confirm that the red characters of " FM STEREO " is displayed.

And, confirm that the relays RL6901 and RL6902 are turned off in 2 or 3 seconds.

3. Confirm that the displayed temperature is within +/-20 C from the ambient temperature.

TX-SR504/504E/8450

OPERATION CHECK-4

DEBUG MODE-1

E1A48K0N/OFFPoO

Ver. 101/06222A

<Ex.>

256 8

71039

The operations of DSP and DIR etc are able to checked by the information displayed on FL in this debug mode.

This information will help to analysing digital audio no sound trouble.

DIR Input

E = UNLOCK

= LOCK

Digital Selector

0 = None

1 = COAXIAL

2 =

3 = OPT 1

4 = OPT 2

5 =

7 =

Sampling Frequency

and Emphasis

32K = 32 kHz without Emphasis

44K = 44.1 kHz without Emphasis

48K = 48kHz without Emphasis

64K = 64 kHz

DIR Detect Type

0 = Analog

1 = PCM

2 = Not PCM

3 = Data

4 = DTS CD (Not used)

5 = Multich

6 = Not Decided

DSP Detect Format

P = PCM (Analog)

D = Dolby Digital

d = DTS

A = AAC

? = Unknown

DSP Decode

o = Decode OK

x = Decode NG

To set in Debug mode

1. Press and hold down DISPLAY button, then press STANDBY/ON button while the unit is powered on.

The version number of microprocessor is displayed only for 3 seconds.

2. Press DISPLAY button while the DSP version is displayed. The status of DSP and DIR etc will be displayed.

To exit

Press STANDBY/ON button.

-------------------------------- DIR ------------------------------------

DIR Status

D = Digital

A = Analog

M = Multich

P = Multich PCM

p = PCM Fixed

d = DTS Fixed

------------------ DSP --------------------

Content of Display

CODEC Clock Mode

N = Normal

U = Up Sampling

H = High Sampling (Double Rate)

D = Down Sampling

Q = Quad Rate

DSP Port

0 = NIC

1 = DEC

2 = BUSY

3 = EXEC WAIT

04 = Boot

11 = Restart

FF = Free

<Ex.>

6 = OPT 3

88K = 88.2 kHz

96K = 96 kHz

176 = 176.4 kHz

192 = 192 kHz

32e = 32 kHz with Emphasis

44e = 44.1 kHz with Emphasis

48e = 48 kHz with Emphasis

DSP Sequence

Mute output IC

(Normal state)

(Abnormal state)

------- Main Microprocessor --------

0 = Selector IC(Q5501)

2 = DSP(Q201)

3 = DIR(Q301)

1. Press TONE+ button within 3 seconds above, the version number of DSP will be displayed for 5 seconds.

DSP :06206A

<Ex.>

FL Display

TX-SR504/504E/8450

OPERATION CHECK-5

DEBUG MODE-2

Trouble Cause Analysis by Debug Mode

This debug mode will help in analysing digital audio no sound trouble.

Check information on FL display and the related devices or circuits.

Symptom on Display Cause Check

"E" is displayed No input signal to DIR Related devices from digital input to Q301

Displayed freq. is different

from input signal freq.

No input signal to DIR Related devices from digital input to Q301

Displayed format is different

from input signal format

No input signal to DIR Related devices from digital input to Q301

"04" or "11" do not change

to "FF"

ROM or RAM error Q281, Q282 & related devices

Displayed format is different

from input signal format

Input signal to DSP is no good Related devices from Q301 to Q201

"x" is displayed Interface between DSP and

Microprocessor is no good

Related devices from Q701 to Q201

This identifies IC which

outputs error

The IC outputs error to main

microprocessor

Q5501, Q201, Q301 & related devices

Digit no.

on FL

TX-SR504/504E/8450

EXPLODED VIEWS-1

A002

x 5 pcs.

A071

x 2 pcs.

A061

x 6 pcs.

A011

x 3 pcs.

A017

x 2 pcs.

A021

x 4 pcs.

A065

x 4 pcs.

A068

x 4 pcs.

A066

x 4 pcs.

A020

x 2 pcs.

A012

x 2 pcs.

A043

x 4 pcs.

A047

x 4 pcs.

A024

x 3 pcs.

A097

x 34 pcs.

A089

x 3 pcs.

A030

x 4 pcs.

A001

A073

A004

A016

A035

A018

F6901

F901

F903

F901C F903C

F6902

P101

P901

A093

U01

U02

U07 U08

U04

U18

U20

U21

U05

U06

U10

U03

U16

U17

A037

A015

A029

A022

A045

A040

A041

A042

A050

A048

A062

A051

A055

A077

A081

A063

A070

A060

P701

A044

A025

A031

A033

T901

A045

A102

A109

DD,DC Only

Refer to

"EXPLODED VIEWS-2"

U19

A028

A069

A027

A081

WT, GR, GQ,

GK, PP Only

TX-SR504/504E/8450

EXPLODEDVIEWS-2

Q6056

Q6066

Q6055

Q6065

Q6054

Q6064

Q6053

Q6063

Q6052

Q6062

Q6051

Q6061

Q6050

Q6060

Q6050A

x 2 pcs.

Q6050B

x 6 pcs.

A049

x 14 pcs.

TX-SR504/504E/8450

BLOCK DIAGRAMS-1

AUDIO SECTION

TX-SR504/504E/8450

SPRLB

SBRL

CSRL

FRL

MAIN L

MAIN R

SUB L

SUB R

REC L

REC R

SBMUT

AMUT

FRONT

SPEAKERS

CENTER

SUB

WOOFER

POWER AMPLIFIER

+29dB

FM/AM

TUNER UNIT

VIDEO 1 IN

VIDEO 1 OUT

VIDEO 2 IN

TAPE IN

TAPE OUT

LPF

SD_RAM

COAXIAL

Q301 CS42518

8ch DAC

DSP

D707E001RFP

INTERFACE

TONE

PHONES

VIDEO 3 IN

OPT 1

OPT 2

OPT 3

XM ANTENNA UNIT

AK4384

DAC

XM RADIO

XM/DT IC

DIR

2ch ADC

FLASH ROM

PREOUT

107

118

106

134

109

110

++ ++++

25k25k 25k25k25k25k25k25k

25k25k25k25k25k25k25k25k

(FRONT)

Q5501

Q201

Q282

Q281 Q701

M306222MWP

MICROPROCESSOR

MDD, MDC ONLY

CENTER

(MULTI CHANNEL INPUT)

DVD

FRONT SPEAKERS B

INVERTING

M12L16161A

ES29LV400

R2S15211FP

SELECTOR/VOLUME

DIGITAL IN

FRONT

SURROUND

BACK

SUBWOOFER

SBL

SBR

SBL

SBR

SURROUND

SPEAKERS

SURROUND BACK

SPEAKERS

BCDEFGH

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