Pioneer VSX-522-K User Manual

VSX-522-K

AV Receiver

VSX-522-K

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

Model Type Power Requirement Remarks

VSX-522-K CUXESM AC 120 V

ORDER NO .

RRV4296

K-MZV FEB.

2012 Printed in Japan

1

WARNING

This product may contain a chemical known to the State of California to cause cancer, or birth defects or other reproductive
harm.

Health & Safety Code Section 25249.6 - Proposition 65

This service manual is intended for qualified service technicians; it is not meant for the casual do-it­yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained
to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely, you
should not risk trying to do so and refer the repair to a qualified service technician.

1. SAFETY PRECAUTIONS

The following check should be performed for the
continued protection of the customer and service
technician.

LEAKAGE CURRENT CHECK

Measure leakage current to a known earth ground
(water pipe, conduit, etc.) by connecting a leakage
current tester such as Simpson Model 229-2 or
equivalent between the earth ground and all exposed
metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control shaft, etc.). Plug
the AC line cord of the appliance directly into a 120 V
AC 60 Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5 mA.

ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE APPLIANCE TO THE CUSTOMER.

2. PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in the appliance

have special safety related characteristics. These are
often not evident from visual inspection nor the protection
afforded by them necessarily can be obtained by using
replacement components rated for voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this Service Manual.
Electrical components having such features are
identified by marking with a > on the schematics and on
the parts list in this Service Manual.
The use of a substitute replacement component which
does not have the same safety characteristics as the
PIONEER recommended replacement one, shown in the
parts list in this Service Manual, may create shock, fire,
or other hazards.
Product Safety is continuously under review and new
instructions are issued from time to time. For the latest
information, always consult the current PIONEER Service
Manual. A subscription to, or additional copies of,
PIONEER Service Manual may be obtained at a nominal
charge from PIONEER.

Leakage
current
tester

Reading should
not be above

0.5 mA

Device
under
test

Test all
exposed metal
surfaces

Also test with
plug reversed
(Using AC adapter
plug as required)

Earth
ground

AC Leakage Test

(FOR USA MODEL ONLY)

2 3 4

SAFETY INFORMATION

A

B

C

D

E

F

2

1

2 3 4

VSX-522-K

5

6 7 8

CONTENTS

SAFETY INFORMATION..........................................................................................................................................................2

1. SERVICE PRECAUTIONS....................................................................................................................................................4

1.1 NOTES ON SOLDERING...............................................................................................................................................4

1.2 NOTES ON REPLACING PARTS.......................................... ... ... ............................... ... .................................................4

1.3 SERVICE NOTICE........................................ .............................................................. ... .................................................4

2. SPECIFICATIONS.................................................................................................................................................................5

3. BASIC ITEMS FOR SERVICE..............................................................................................................................................6

3.1 CHECK POINTS AFTER SERVICING ............................. ..............................................................................................6

3.2 JIGS LIST...... .. .............................................................. ... ..............................................................................................6

3.3 PCB LOCATIONS.................................... .. .....................................................................................................................7

4. BLOCK DIAGRAM................................................................................................................................................................8

4.1 OVERALL WIRING DIAGRAM .............................................. ... ......................................................................................8

4.2 AUDIO BLOCK DIAGRAM............................................. ... ............................... .. ...........................................................10

4.3 D-MAIN BLOCK DIAGRAM................................................................................................... ... ....................................12

4.4 POWER SUPPLY BLOCK DIAGRAM............................................. ... .................................... ... ... ... ..............................14

4.5 VIDEO BLOCK DIAGRAM.................................. ... .............................. ... .................................. ....................................16

5. DIAGNOSIS........................................................................................................................................................................17

5.1 TROUBLESHOOTING.................... ... .............................................................. .. ...........................................................17

5.2 USB/iPod ERROR MESSAGE......................................................................................................................................29

5.3 DETECTION CIRCUIT ......................... ... ............................................................. ... .....................................................30

5.4 IC INFORMATION .............................................. ... .......................................................................................................32

6. SERVICE MODE.................................................................................................................................................................38

6.1 SERVICE MODE...... ... .. ............................... ... .............................................................. .. .............................................38

7. DISASSEMBLY ...................................................................................................................................................................42

8. EACH SETTING AND ADJUSTMENT................................................................................................................................50

8.1 ADJUSTMENT REQUIRED WHEN THE UNIT IS REPAIRED OR REPLACED.......................................... .. ... ...........50

8.2 UPDATING OF THE FIRMWARE .................................................................................................................................51

8.3 IDLE CURRENT ADJUSTMENT..................................................................................................................................57

9. EXPLODED VIEWS AND PARTS LIST...............................................................................................................................58

9.1 PACKING SECTION..................................................................................... ... .. ...........................................................58

9.2 EXTERIOR SECTION .................... ... ... ............................... .. .......................................................................................60

10. SCHEMATIC DIAGRAM.............................................................................. ... ... ................................................................64

UDIO ASSY

10.1 A

10.2 AMP5 ASSY (1/2).......................................................................................................................................................66

10.3 AMP5 ASSY (2/2).......................................................................................................................................................68

10.4 MAIN ASSY................................................................................................................................................................70

10.5 D-MAIN ASSY (1/4)....................................................................................................................................................72

10.6 D-MAIN ASSY (2/4)....................................................................................................................................................74

10.7 D-MAIN ASSY (3/4)....................................................................................................................................................76

10.8 D-MAIN ASSY (4/4)....................................................................................................................................................78

10.9 VIDEO, G-L, G-R, WG-B and WG-A ASSYS..............................................................................................................80

10.10 BRG-A, BRG-B and BRG-C ASSYS ........................................................................................................................82

10.11 FRONT, INSEL, HP, MIC, F-USB and WG ASSYS...................................................................................................84

10.12 STANDBY ASSY.......................................................................................................................................................86

11. PCB CONNECTION DIAGRAM............................................ ... .................................... ... ... ...............................................88

11.1 AUDIO ASSY..............................................................................................................................................................88

11.2 AMP5 ASSY ...............................................................................................................................................................90

A

11.3 M

IN ASSY................................................................................................................................................................92

11.4 D-MAIN ASSY ............................................................................................................................................................96

11.5 VIDEO ASSY............................................................................................................................................................100

11.6 G-L, G-R, WG-B and WG-A ASSYS.........................................................................................................................101

11.7 BRG-A, BRG-B and BRG-C ASSYS ........................................................................................................................102

11.8 FRONT, INSEL, HP, MIC, F-USB and WG ASSYS...................................................................................................106

11.9 STANDBY ASSY.......................................................................................................................................................110

12. PCB PARTS LIST................................... .............................................................. .. .........................................................111

..............................................................................................................................................................64

A

B

C

D

E

F

VSX-522-K

5

6 7 8

3

1

• For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.
Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs
accompanied by reworking of soldering.

• Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40 ºC.
Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 ºC in general, although
the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of
the soldering iron.

Do NOT use a soldering iron whose tip temperature cannot be controlled.
Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting

temperatures (hard to melt/easy to harden).
The following lead-free solders are available as service parts:

• Parts numbers of lead-free solder:
GYP1006 1.0 in dia.
GYP1007 0.6 in dia.
GYP1008 0.3 in dia.

The part listed below is difficult to replace as a discrete component part.
When the part listed in the table is defective, replace whole Assy.

Assy Name

D-MAIN Assy

HDMI Receiver —————— IC with heat-padIC2000

Parts that is Difficult to Replace

Ref No. Function Part No. Remarks

D-MAIN 3.3 V Power Supply IC —————— IC with heat-padIC2007
D-MAIN 5 V Power Supply IC —————— IC with heat-padIC2008
DSP 1.2 V Power Supply IC —————— IC with heat-padIC2013
DSP 1.8 V Power Supply IC —————— IC with heat-padIC2015
DSP IC —————— IC with heat-padIC2016
USB 5 V SW IC —————— IC with heat-padIC2024

• Discharging

For more detail, please refer to "7. DISASSEMBLY - 1. Discharging".

• Notes on Ground Points Connection

For more detail, please refer to "7. DISASSEMBLY - 2. Notes on Ground Points Connection".

2 3 4

1. SERVICE PRECAUTIONS

1.1 NOTES ON SOLDERING

A

B

C

1.2 NOTES ON REPLACING PARTS

D

E

F

1.3 SERVICE NOTICE

4

1

2 3 4

VSX-522-K

5

Amplifier section

Continuous average power output of 80 watts* per
channel, min., at 8 ohms, from 20 Hz to 20 000 Hz with no
more than 0.08 %** total harmonic distortion.

Front (stereo)............................................................... 80 W + 80 W

Power output (1 kHz, 6 Ω, 1 %)...........................140 W per channel

Guaranteed speaker impedance.................................... 6 Ω to 16 Ω

* Measured pursuant to the Federal Trade Commission’s Trade
Regulation rule on Power Output Claims for Amplifiers
** Measured by Audio Spectrum Analyzer

Audio Section

Input (Sensitivity/Impedance)

LINE.........................................................................200 mV/47 kΩ

Signal-to-Noise Ratio (IHF, short circuited, A network)

LINE.......................................................................................98 dB

Signal-to-Noise Ratio [EIA, at 1 W (1 kHz)]

LINE.......................................................................................79 dB

Video Section

Signal level

Composite................................................................1 Vp-p (75 Ω)

Tuner Section

Frequency Range (FM) .................................87.5 MHz to 108 MHz

Antenna Input (FM)................................................75 Ω unbalanced

Frequency Range (AM)...................................530 kHz to 1700 kHz

Antenna (AM) .............................................................Loop antenna

Digital In/Out Section

HDMI terminal ...........................................................Type A (19-pin)

HDMI output type............................................................5 V, 100 mA

USB (iPod) terminal..............................USB2.0 Full Speed (Type A)

Miscellaneous

Power Requirements...............................................AC 120 V, 60 Hz

Power Consumption................................................................415 W

In standby...........................................................0.4 W (ARC OFF)

Dimensions....................435 mm (W) x 168 mm (H) x 342.5 mm (D)

17 3/16 in. (W) x 6 5/8 in. (H) x 13 1/2 in. (D)

Weight (without package).....................................8.7 kg (19 lb 3 oz)

Note

• Specifications and the design are subject to possible
modifications without notice, due to improvements.

Accessories

Remote control (AXD7660)
(8300766000010-IL)

AM loop antenna
(E601019000010-IL)

Warranty card
Quick start guide (5707000006490-IL)
Safety Brochure
Operating instructions (CD-ROM)(6517000000500-IL)

FM wire antenna
(E605010140010-IL)

Dry cell batteries
(AAA size IEC R03) x2

Microphone (for Auto MCACC setup)
(APM7010)

2. SPECIFICATIONS

6 7 8

A

B

C

D

E

F

VSX-522-K

5

6 7 8

5

1

Items to be checked after servicing

To keep the product quality after servicing, confirm recommended check points shown below.

See the table below for the items to be checked regarding video and audio.

No.

Item to be checked regarding video Item to be checked regarding audio

Procedures Check points

1 Confirm whether the customer complain has been solved.

If the customer complain occurs with the particular source, such
as Dolby Digital, DTS, AAC, DVD-A and HDMI, input it for the
operation check.

The customer complain must not be reappeared.
Video, Audio and operations must be normal.

2 Check the analog audio playback.

(Make the analog connections with a DVD player.)

Each channel audio and operations must be normal.

3 Check the digital audio playback.

(Make the digital connections with a DVD player.)

Each channel audio and operations must be normal.

4 Check surround playback.

(Select Surround mode and check the multichannel operations
via the DSP circuit.)

Each channel audio and operations must be normal.

5 Check the video outputs.

(Connect with a DVD player.)

Video and operations must be normal.

6 Check the tuner (AM and FM) operations. Audio and operations must be normal.
7 Check the sound from headphone output. Sound must be normal, without noise.

8 Check the appearance of the product.

Block noise Distortion
Horizontal noise Noise
Flicker Volume too low
Disturbed image (video jumpiness) Volume too high
Too dark Volume fluctuating
Too bright Sound interrupted
Mottled color

No scratches or dirt on its appearance after receiving it for
service.

Jigs List

Jig Name Part No. Remarks

RS-232C update jig (Jig + 10P FFC) GGF1642

(Marketing product)

(Marketing product)

MAIN microcomputer firmware update
(RS-232C ↔ Rear panel)

RS-232C cable (9-pin to 9-pin, straight cable)

9P extension jig cable GGD1739 Diagnosis (AMP5 Assy ↔ AUDIO Assy)

Diagnosis (D-MAIN Assy ↔ BRG-C Assy)Board to board extension jig cable GGD1798
Diagnosis (D-MAIN Assy ↔ BRG-C Assy)Board to board extension jig cable GGD1799

Diagnosis (D-MAIN Assy ↔ BRG-A Assy)Board to board extension jig cable GGD1756

Lubricants and Glues List

Name Part No. Remarks

Silicon grease GEM1057 Refer to "9.2 EXTERIOR SECTION".
Silicon adhesive

GYA1011
(KE40RTV-W)

Refer to "9.2 EXTERIOR SECTION".

HDMI (SUB) & CEC microcomputer firmware update
(USB ↔ Rear panel)

RS-232C update jig GGF1646
USB cable (USB A-Type ↔ USB B-Type)

2 3 4

3. BASIC ITEMS FOR SERVICE

3.1 CHECK POINTS AFTER SERVICING

A

B

C

D

3.2 JIGS LIST

E

F

6

1

2 3 4

VSX-522-K

5

NSP 1..PCB TTL ASSY MAIN 7025HK1106010-IL

2..MAIN ASSY 7028071611060-IL

2..G-R ASSY 7028071614060-IL

2..G-L ASSY 7028071615060-IL

2..WG-A ASSY 7028071616060-IL

2..WG-B ASSY 7028071617060-IL

NSP 1..PCB TTL ASSY VIDEO 7025HK1106012-IL

2..VIDEO ASSY 7028071631010-IL

2..STBY ASSY 7028071632010-IL

2..BRG-A ASSY 7028071633010-IL

2..BRG-B ASSY 7028071634010-IL

2..BRG-C ASSY 7028071635010-IL

NSP 1..PCB TTL ASSY AUDIO 7025HK1106013-IL

2..AUDIO ASSY 7028071641060-IL

NSP 1..PCB TTL ASSY DMAIN 7025HK1106014-IL

2..D-MAIN ASSY 7028071651010-IL

NSP 1..PCB TTL ASSY AMP5 7025HK1106015-IL

2..AMP5 ASSY 7028070243010-IL

NSP 1.PCB TTL ASSY FRONT 7025HK1106011-IL

2..FRONT ASSY 7028071621060-IL

2..HP ASSY 7028071622060-IL

2..INSEL ASSY 7028071623060-IL

2..MIC ASSY 7028071624060-IL

2..F-USB ASSY 7028071625060-IL

2..WG ASSY 7028071627060-IL

Mark No. Description Part No. Mark No. Description Part No.

LIST OF ASSEMBLIES

NOTES: - Parts marked by “NSP” are generally unavailable because they are not in our Master Spare Parts List.

-

The > mark found on some component parts indicates the importance of the safety factor of the part.

Therefore, when replacing, be sure to use parts of identical designation.

D

D-MAIN ASSY

K

BRG-B ASSY

L

BRG-C ASSY

J

BRG-A ASSY

Q

F-USB ASSY

G

G-R ASSY

I

WG-A ASSY

P

MIC ASSY

R

WG ASSY

A

AUDIO ASSY

B

AMP5 ASSY

C

MAIN ASSY

H

WG-B ASSY

E

VIDEO ASSY

S

STBY ASSY

F

G-L ASSY

N

INSEL ASSY

O

HP ASSY

M

FRONT ASSY

3.3 PCB LOCATIONS

6 7 8

A

B

C

D

5

6 7 8

VSX-522-K

E

F

7

1

FROM MAIN TRANS

CP1 CP2 CP3

1AC 1AC 1AC
2GND2AC 2AGND
3AC 3AC 3AC

CP403 CN3
+HIGHB 1 1 +HIGHB
+HIGHB 2 2 +HIGHB
+HIGHB 3 3 +HIGHB

-HIGHB 4 4-HIGHB

-HIGHB 5 5-HIGHB

-HIGHB 6 6-HIGHB

HIGHGND7 7HIGHGND
HIGHGND 88HIGHGND
HIGHGND9 9HIGHGND

PREGND10 10PREGND

CP402 CN1

FL 1 1 FL
FR 2 2 FR

C3 3C
SL 4 4 SL
SR 5 5 SR

1FL 6AGND

1 +9.1V

2AGND7SR

CN404

2GNDA

1HP_DET

3SL 8 AGND

DC_DET4 1

3 -9.1V

2HP_RO

4AGND9FR

DC_DET3 2

4MIC

3GNDA

5C 10AGND

ASO_DET 3

5MIC_DET

4HP_LO

RADI_THERMAL4

CN901 CN721 CP401 TR_THERMAL5

CN5

DGND1 1

CP901 CP721

DGND1

2

1M

IC DET 1HP LO

+12V

3

2MIC 2GNDHP

+12V

4

3 NC3HP RO
4 -9.1V 4HP DET
5GNDA

CP204

6 +9.1V

HP_DET 1

MIC_DET 2

VOL_DATA 3

VOL_CLK 4

SW_SUM 5

HP_RLY 6

A MUTE 7

SB MUTE 8

NC9

CN400

CP402 CN402

HP LO 1 1 HP_LO

1FL 6GNDA

GNDA 2 2 GNDA

2GNDA 7 SR

HP RO 3 3 HP_RO

3SL 8 GNDA

Z2 MUTE 4 4 Z2_MUTE

4GNDA 9 FR

SB MUTE 5 5 SB_MUTE

5 C 10 GNDA

AMUTE 6 6 A_MUTE

HPRLY 7 7 HP_RLY

SW SUM 88SW_SUM

Z2VOL DATA 9 9 Z2VOL_DATA

Z2VOL CLK10 10 Z2VOL_CLK

VOL DATA 11 11VOL_DATA

VOL CLK 12 12VOL_CLK

+12V 13 13+12V

GNDA 14 14GNDA

CN401

CP17

MIC 15 15 MIC

MUTE_B+ 1 1 MUTE_B+

GND

A

16 16 GNDA

+12V 2 2A+12V

-12V 17 17-12V

+12V 3 3A+12V
GNDA 4 4 AGND
GNDA 5 5 AGND

-12V 66A-12V

-12V 77A-12V

CP13

GNDA 88AGND

U/DGND1

1SBLIN 11SRIN

BT_R 9 9 BT_R

TUNER_INT2

2GNDA 12GNDA

GNDA 10 10 AGND

TUNER_SDIO3

3SBRIN 13 FLIN

BT_L11 11BT_L

TUNER_SCLK4

4GNDA 14GNDA

GNDA 12 12 AGND

TUNER_SEN5

5SWIN 15 FRIN

TUNER_R13 13 TU_R

TUNER_

RST 6

6GNDA 16GNDA

GNDA 14 14 AGND

2533_CTL 7

7CIN 17 AIN_L

TUNER_L15 15 TU_L

8 GNDA 18GNDA
9SLIN 19AIN_R

10 GNDA

CN403

CP403

1 SBL_OUT 11SR_OUT

CP16

2GNDA 12 GNDA

OSD_RST 1

3 SBR_OUT 13 FL_OUT

OSD_CE 2

4GNDA 14 GNDA

OSD_CLK 3

5SW_OUT 15FR_OUT

OSD_DATA 4

6GNDA 16 GNDA

CTL_A 5

7C_OUT 17AIN_L

CTL_B 6

8 GNDA 18GNDA

U/DGND7

9SL_OUT 19AIN_R

+5V8

10 GNDA

VIDEO_MUTE9

CP15

U/DGND1

CN9

CP9

MUT

E_B+ 2

OSD_RST 1 1 OSD_RST

U/DGND3

OSD_CE 2 2 OSD_CE

FBRL 4

OSD_CLK 3 3 OSD_CLK

SBRL 5

OSD_DATA 4 4 OSD_DATA

SURL 6

CTL_A 5 5 CTL_A

CRL 7

CTL_B 6 6 CTL_B

FRL 8

U/DGND 7 7 U/DGND

DC_PRO 9

+5V8 8+5V

-VF(-30V)10

VIDEO_MUTE9 9 VIDEO_MUTE

U/DGND11

-

When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".

-

The > mark found on some component parts indicates the importance of the safety factor of the part.

Therefore, when replacing, be sure to use parts of identical designation.

B

B

1/2-B2/2

A

AUDIO ASSY
(7028071641060-IL)

J

BRG-A ASSY
(7028071633010-IL)

K

BRG-B ASSY
(7028071634010-IL)

E

VIDEO ASSY
(7028071631010-IL)

O

HP ASSY
(7028071622060-IL)

P

MIC ASSY
(7028071624060-IL)

H

WG-B ASSY
(7028071617060-IL)

C

MAIN ASSY
(7028071611060-IL)

AMP5 ASSY
(7028070243010-IL)

I

WG-A ASSY
(7028071616060-IL)

R

WG ASSY
(7028071627060-IL)

F

G-L ASSY
(7028071615060-IL)

G

G-R ASSY
(7028071614060-IL)

2 3 4

4. BLOCK DIAGRAM

4.1 OVERALL WIRING DIAGRAM

A

B

C

D

E

F

8

1

2 3 4

VSX-522-K

5

CN702

CP702

STBY_KEY 4 1 STBY_KEY

INPUT_UP 3 2 INPUT_UP

GNDU 2 3 GNDU

INPUT_DOWN 14INPUT_DOWN

1-30V 13 FLR_DATA
2-30V 14 FLT_CLK
3CPU_ST_VCC 15 FLT_CE

1HDMI+12V

4CPU_ST_VCC 16 INPUT_UP

2 STBY RLY

5GNDU 17 KEY2

3PDN

6GNDU 18KEY3

4CPU ST VCC

7 CPU_+3.3V 19 KEY1 (STBY_KEY)

5 CPU_+3.3V

8 CPU_+3.3V 20 INPUT_DN

6GNDU

9ST_H+5V 21VOL_UP

1GNDUSB

7FL2

10 POWERDOWN 22VOL_DN

2D+

8 FLCT

11 RMC 23THRU_LED

3D-

9FL1

12 STBY_RLY

4GNDUSB

AC 1 AC

5U

S

B+5V

CN701 CN704AA

CN2006

CP301

LIVE1

CP701

AC CORD

1FLAC

NEUTRAL 2

2FLCT
3FLAC

CP303

4CPU G ND

CN704B

CP2006

1

5CPU+3.3V

1THRU LED 13RMC

1UCHGND

VOL SEL 2

6STBY VCC

2 VOL DN 14 POWER DN

2D+

3

7PDN

3 VOL UP 15 H+5V

3D-

8 STBY RLY

4IN DN 16 CPU+3.3V

4USBGND

CP302

9CPU_ST_VCC

5KEY1 17CPU+3.3V

5USB+5V

1

6KEY3 18 ST VCC

TRANS

7KEY2 19ST VCC

2

8 IN UP 20 GNDU
9 F

LT CE 21 GNDU

CP304

10 FLT CLK 22 FL-30V

FLAC 1

11 FLT DATA 23 FL-30V

TRANSFLCT 2

12 STBY RLY

FLAC 3

CP2005

1DC D ET4
2DC D ET3
3ASO_DET
4RADI_DET
5 TRTHER_DET

CN5

CP2004
DGND1 1 1D+12V
DGND1 2 2D+12V

+12V

3 3DGND

+12V

4 4DGND

CN204

1HP DET
2MIC DET
3 VOL DATA
4 VOL CLK
5SW SUM
6 HP RLY
7A MUT E
8 SB MUTE
9 NC

CP2001

CN2001

HP DET 1 1 HP DET

MIC DET 2 2 MIC DET

VOL DATA 3 3 VOL DATA

VOL CLK 4 4 VOL CLK

SB MUTE 5 5 SB MUTE

A MUTE 6 6 A MUTE

SW SUM 7 7 SW SUM

HP RLY 88HP RLY

CP13

CN13

GNDU 9 9 GNDU

U/DGND1 1GNDU

FL-30V 10 10 FL-30V

TUNER_INT2 2TUNER INT

DC DET11 11 DC DET

TUNER_SDIO3 3 TUNER SDIO

F RLY 12 12 F RLY

TUNER_SCLK4 4 TUNER SCLK

C RLY 13 13 C RLY

TUNER_SEN55TUNER SEN

S RLY 14 14S RLY

TUNER_RST6 6 TUNER RST

M

U

TE B+15 15 MUTE B+

2533_CTL 7 7 NC

GNDU16 16 GNDU

TUNER SCLK17 17TUNER SCLK

TUNER SDIO 1 8 18 TUNER SDIO

TUNER SEN19 19 TUNER SEN
TUNER RST20 20 TUNER RST

TUNER INT21 21 TUNER INT

V CTL B 22 22 BH76330 B
V CTL A 23 23 BH76330 A

OSD DATA24 24 OSD DATA

OSD CLK25 25 OSD CLK

OSD CE 26 26 OSD CE

OSD RST27 27 OSD RST

CP16

CN16

OSD_RST 1 1 OSD RST

OSD_CE 2 2 OSD CE

OSD_CLK 3 3 OSD CLK

OSD_DATA 4 4 OSD DATA

CTL_A 5 5 V CTL A

CP2002

CN2002

CTL_B 6 6 V CTL B

V+5V 11V+5V

U/DGND7 7GNDU

CPU+3.3V 2 2 CPU+3.3V

+5V8 8V+5V(A+5V)

VIDEO MUTE 3 3 VIDEO MUTE

VIDEO_MUTE9 9 VID

EO MUTE

SC

LK JTAG 4 4 SCLK JTAG

BUSY JTAG 5 5 BUSY JTAG

CE 6 6 CE

EPM UP 7 7 EPM UP

CP15

CN11

CNVSS UP 88CNVSS UP

U/DGND1 1GNDU

232 TX/U RX 9 9 232TX/U RX

1AINR11SL

MUTE_B+ 2 2 MUTE B +

232 RX/U TX 10 10 232RX/U T X

2AGND12AGND

U/DGND3 3GNDU

RESET11 11 RESET

3AINL13C

FBRL 4 4 NC

CEC RXD12 12 CEC RXD

4AGND14AGND

SBRL 5 5 NC

CEC TXD13 13 CEC TXD

5FR 15SW

SURL 6 6 S RLY

CEC OPO14 14 CEC OPO

6AGND16AGND

CRL 7 7 C RLY

SUB RXD15 15 SUB RXD

7FL 17SBR

FRL 88F RLY

SUB TXD 16 16 SUB TXD

8 AGND18 AGND

DC_PRO 9 9 DC DET

GNDD 17 17 GNDD

9SR 19SBL

-VF(-30V) 10 10 FL-30V

SUB OPO 18 18 SUB OPO

10 AGND

U/DGND1

1 1

1GNDU

H+5V 19 19 H+5V

CN2003

CP2003

1AIN R 11 SL OUT
2GNDA 12 GNDA
3AIN L13C OUT
4GNDA 14 GNDA
5FR OU T 15SW OUT
6GNDA 16 GNDA
7 FL OUT 17 SBR OUT
8 GNDA 18GNDA
9 SR OUT 19 SBL OUT

10 GNDA

STBYB'D

L

BRG-C ASSY
(7028071635010-IL)

S

STBY ASSY
(7028071632010-IL)

M

FRONT ASSY
(7028071621060-IL)

N

INSEL ASSY
(7028071623060-IL)

Q

F-USB ASSY
(7028071625060-IL)

611060-IL)

D

D

1/4-D4/4

D-MAIN ASSY
(7028071651010-IL)

6 7 8

A

5

6 7 8

VSX-522-K

B

C

D

E

F

9

1

A

AUDIO ASSY

M

FRONT ASSY

P

MIC ASSY

4.2 AUDIO BLOCK DIAGRAM

A

B

2 3 4

C

D

E

F

10

1

2 3 4

VSX-522-K

5

O

HP ASSY

C

MAIN ASSY

Q

F-USB ASSY

B

AMP5 ASSY

6 7 8

A

B

C

D

E

F

VSX-522-K

5

6 7 8

11

1

Q2035

4.3 D-MAIN BLOCK DIAGRAM

A

B

2 3 4

C

D

E

F

12

1

2 3 4

VSX-522-K

5

Q2035

1 6

2

3

5

4

Q2034

FDC608PZ

D

D-MAIN ASSY

6 7 8

A

B

C

D

E

F

VSX-522-K

5

6 7 8

13

1

S4(FLT)

S2(+12V,-12V)

S1(AMP B+/B-)

AC CORD

(922L/822:USB)

S3(522:DSP, HDMI)

MAIN TRANS

SUB TRANS

S

STBY ASSY

2 3 4

4.4 POWER SUPPLY BLOCK DIAGRAM

A

B

C

D

E

F

14

1

2 3 4

VSX-522-K

5

Q2031

Q2029

Q2027

Q2035

1 6

2

3

5

4

Q2030

FDC608PZ

1234

5 6 7 8

IC2025

TPS2557

GND
IN
IN
EN

OUT
OUT
LIM

FAULT

1 6

2

3

5

4

Q2026

FDC608PZ

1 6

2

3

5

4

Q2028

FDC608PZ

1 6

2

3

5

4

Q2032

FDC608PZ

Q2033

1 6

2

3

5

4

Q2034

FDC608PZ

6 7 8

A

B

C

D

E

F

VSX-522-K

5

6 7 8

15

1

BD

75

75

SAT

E

VIDEO ASSY

4.5 VIDEO BLOCK DIAGRAM

A

B

2 3 4

C

D

E

F

16

1

2 3 4

VSX-522-K

5

Step 0: Preliminary confirmation

CN2002, CN2001, CN2003, CP2004

To Step 1

Are the connectors

securely inserted?

Step 1: Fixed board

Confirm the following items before checking

To Step 2

Tighten screws securely.

Do screws of back chassis

securely tighten?

Yes

Yes

B to B connector, wire

Yes

No

Insert the connectors
completely.

No

Step 2: Power supply

IC2007 (pin 2)

L2007

Is the voltage 12 V?

Check the IC2007 and its
peripheral circuits.

Is the voltage 3.3 V output?

Is pin 7 (en) of IC2007 high?

Is the voltage of 1.2 V output?

IC2013 (pin 2)

Check the IC2016 DSP power pin (cvdd and
dvdd): cvdd: 1.2 V, dvdd: 3.3 V.

Yes

Yes

+3.3V line of D-MAIN Assy is OK.

OK

Yes

No OK

Check the peripheral circuits or the
MAIN microcomputer (IC2023).

Check the IC2016 DSP
power pin (cvdd and dvdd)
and its peripheral circuits
or must be replaced
IC2016, IC2013.

No

No

No

Replace IC2007.

OK

Replace IC2007 or
check the MAIN Assy.

12 V input

(to chassis)

Is the voltage of 1.8 V output?

IC2005 (pin 5)

Check the IC2000 HDMI power pin
(acvdd33 and advdd18): 3.3 V, 1.8 V.

+3.3V line of D-MAIN Assy is OK.

OK

Yes

Check the IC2000 HDMI
power pin (avdd33 and
advdd18) and its peripheral
circuits or must be replaced
IC2000, IC2005.

No

(to chassis)

[1] DSP TROUBLESHOOTING

TROUBLESHOOTING FOR ALL DESTINATION

5. DIAGNOSIS

5.1 TROUBLESHOOTING

6 7 8

A

B

C

D

E

F

VSX-522-K

5

6 7 8

17

1

Yes

Step 3: Power supply

CP2004 (pins 1, 2)

IC2008 (pin 2)

L2008

Is the voltage of 12 V?

Check the wire between
D-MAIN and MAIN Assemblies.

Check the IC2008 and
its peripheral circuits.

Is the voltage of 1.2 V input?

Yes

No

No

Is the voltage of 5 V output?

Yes

No

NG

OK

Check the MAIN Assy.

Replace IC2008.

12 V input

12 V input

Is pin 7 (en) of IC2008 high?

Yes

Check the IC2011 power pin (dvdd and
avdd): dvdd: 5 V, avdd: 5 V.

+5V line of D-MAIN Assy is OK.

OK

Check the peripheral circuits or the
MAIN microcomputer (IC2023).

No

Replace IC2008.

OK

Yes

Step 4: X'tal

IC2011 (pins 6, 7)

IC2014 (pin 2)

Is there a 24.576 MHz

output?

Check the IC2011 and its peripheral
circuits or replace XTAL2002.

No

Yes

Is there a 24.576 MHz

input?

Check the IC2014 and its peripheral
circuits or replace IC2011.

No

To Step 5

A

2 3 4

B

C

D

E

F

18

1

2 3 4

VSX-522-K

5

Yes

Step 5: DIR

IC2009 (pin 3)

IC2011 (pin 61)

IC2011 (pin 67)

Can observe the

digital signal?

Check the path to INPUT pin of
JACK2006 or replace JACK2006.

Check that the S/PDIF signal is input.
Check that changes by pulling out and inserting the digital input lines.

No

Yes

Can observe the

digital signal?

Check the pass to IC2009 pin 4
or replace IC2009.

Can observe the

digital signal?

Yes

No

Check the path to pins 8 to 11 of
IC2009 or replace IC2009.

No

coax

opt

(0 V ↔ 3.3 V)

(0 V ↔ 3.3 V)

(0 V ↔ 3.3 V)

IC2011 (pin 69)

Can observe the

digital signal?

Yes

Check the path to pin 5 of IC2009 or
replace IC2009.

No

HDMI

(0 V ↔ 3.3 V)

IC2011 (pin 59)

Can observe the

digital signal?

Yes

Check the path to pins 1, 12 of
IC2009 or replace IC2009.

No

ARC

(0 V ↔ 3.3 V)

SPDIF INPUT line is OK.

Yes

Yes

No

Check the IC2011 and its peripheral
circuits of IC2011.

No

Check the IC2014 and its peripheral
circuits of IC2014.

OK

Check the pin 58 of IC2023,
is the voltage 3.3 V?

No

No

Replace IC2011, IC2014.

Check the IC2023 and
its peripheral circuits or
replace IC2023.

Check the peripheral circuits
between IC2011 and IC2023.

OK

IC2011 (pin 10)

IC2011 (pin 16)

Yes

Is there a master clock

24.576 MHz output?

Is the voltage of PDN IC2011

pin 31 3.3V?

Is there a LR clock

output?

DIR_MCK (master clock)

DIR_LRCK (LR CLOCK)

(0 V ↔ 3.3 V)

(0 V ↔ 3.3 V)

Check that the data and clock signals are output.

A

6 7 8

A

B

C

D

E

F

VSX-522-K

5

6 7 8

19

1

Replace IC2011, IC2014.

Replace IC2014.

OK

IC2011 (pin 14)

Yes

Yes

Yes

IC2011 (pin 15)

IC2014 (pin 4)

DIR output is OK.

Is there a DATA output?

Is there a master clock

24.576 MHz output?

Yes

Is the voltage of IC2014

pin 1 0 V?

Is there a bit clock output?

DIR_SDTO (DATA)

DIR_BCK (bit clock)

DAI_MCK (MASTER CLOCK)

*IC2014 pin 1

0 V: DIR

3.3 V: HDMI

SWITCH

(0 V ↔ 3.3 V)

(0 V ↔ 3.3 V)

(0 V ↔ 3.3 V)

Check the IC2011 and its peripheral
circuits of IC2011.

No

Check the path between IC2014 pin 1
and IC2023 pin 70.

No

Replace IC2011.

OK

Check the IC2011 and its peripheral
circuits of IC2011.

Check the IC2014 and its peripheral
circuits of IC2014.

No

No

OK

A

Yes

Step 6: ADC

CN2003 (pins 1, 3)

IC2011 (pin 17)

IC2011 (pin 18)

Is there a analog audio

signal?

Is there a analog

audio signal of BRG-A Assy

CP403 pins 17, 19?

Check that the ANALOG input to DSP mode.

Yes

No

No

Replace CP2003 wafer of BRG-A Assy,
or reconnect BRG-A Assy.

Is there a data

output?

Yes

ANALOG AUDIO input

ADC_SDTO (ADC AUDIO OUT)

DSP_BCK

(0 V ↔ 3.3 V)

Check the AUDIO Assy.

No

Is there a bit clock

3.072 MHz input?
Yes

(0 V ↔ 3.3 V)

No

IC2011 (pin 19)

DSP_LRCK

Is there a LR clock

48 kHz input?

Yes

(0 V ↔ 3.3 V)

No

To Step 7

Check the path between IC2016 and data & address lines.
SDRAM (IC2018), FLASH ROM (IC2019), replace IC2016.

A

2 3 4

B

C

D

E

F

20

1

2 3 4

VSX-522-K

5

Yes

Step 7: DSP mode audio output

IC2011(pin 18)

IC2011 (pin 19)

Is there a bit clock input?

Digital output of each CH when inputting the digital signal with audio.

Is there a LR clock

output?

Is there a data input?

Is there a data input?

Is there a data input?

Is there a data input?

Yes

IC2011 (pin 28)

IC2011 (pin 27)

Yes

IC2011 (pin 26)

Yes

IC2011 (pin 25)

Yes

Yes

DSP_BCK (BIT CLOCK)

DSP_LRCK (LR CLOCK)

front L/R data

surround L/R data

CENTER/LFE data

surround back L/R data
or front hight L/R data

(0 V ↔ 3.3 V)

(0 V ↔ 3.3 V)

(0 V ↔ 3.3 V)

(0 V ↔ 3.3 V)

(0 V ↔ 3.3 V)

(0 V ↔ 3.3 V)

To Step 8

No

No

No

No

No

No

Check the path between IC2016 and data & address lines.
SDRAM (IC2018), FLASH ROM (IC2019), replace IC2016.

6 7 8

A

B

C

D

E

F

VSX-522-K

5

6 7 8

21

1

Yes

Step 8: CODEC output (ANALOG AUDIO OUT)

IC2011 (pin 49)

IC2011 (pin 47)

Is there a audio signal

output?

Analog output of each CH when inputting the digital signal with audio.

Analog output of each CH when inputting
the digital signal (-∞ dB(no signal)).

Yes

Is there a audio signal

output?

front R out

front L out

IC2011 (pin 45)

Yes

Is there a audio signal

output?

surround R out

IC2011 (pin 43)

Yes

Is there a audio signal

output?

surround L out

IC2011 (pin 43)

surround L out

IC2011 (pin 41)

Yes

Is there a audio signal

output?

center out

Yes

IC2011 (pin 41)

center out

IC2011 (pin 39)

Yes

Is there a audio signal

output?

LFE out

Yes

Yes

IC2011 (pin 39)

LFE out

IC2011 (pin 49)

Yes

Is the output 2.5 V fixing?

front R out

IC2011 (pin 47)

Yes

Is the output 2.5 V fixing?

front L out

IC2011 (pin 45)

Yes

Is the output 2.5 V fixing?

Is the output 2.5 V fixing?

Is the output 2.5 V fixing?

Is the output 2.5 V fixing?

surround R out

End

No

No

No

No

No

No

No

No

No

No

No

No

Replace IC2011.

A

2 3 4

B

C

D

E

F

22

VSX-522-K

1

2 3 4

5

Cause for noncomplection of HDMI authentication between the source equipment and this unit.
(the HDMI indicator is unlit or flasher)

Causes for no display or sound from the monitor

[2] HDMI TROUBLESHOOTING

Replace the HDMI cable.

NG

OK

Replace the HDMI cable.

Connect the source equipment
(player) to the Sink equipment
(monitor) directly.

OK

Repare the Receiver.

NG

Replace the Player.

OK

Repare the Player.

NG

Replace the Monitor.

OK

Repare the Monitor.

HDMI T roubleshooting

HDMI Simple Diagnosis

Step 0: Preliminary confirmation

Confirm the following items before checking

To Step 1

Do screws of back chassis

securely tighten?

To Step 2

Tighten screws securely.

Yes

No

Step 1: Connect the HDMI equipment

Source equipment:
Connect a DVD player to DVD or SAT/CBL or GAME or BD

Sink equipment:
Connect a TV to HDMI OUT

Turn on the power of the receiver and equipments which was
connected with HDMI.

Switch the function that HDMI was assigned.
Factory shipments setting:
HDMI1: DVD
HDMI2: SAT/CBL
HDMI3: GAME
HDMI4: BD

Function switch (DVD or SAT/CBL or GAME or BD)

POWER ON

6 7 8

A

B

C

D

E

VSX-522-K

5

6 7 8

F

23

1

Step 2: Power supply

IC2004 (pin 1)

IC2004 (pin 4)

Is the voltage 0 to 3.3 V?

Is the voltage 5 V?

Is pin 7 (en) of IC2008

high?

Yes

Yes

Is 3.3 V output voltage?

CP2004 (pins 1, 2)

Yes

L2007

Yes

IC2005 (pin 1)

Yes

Yes

L2008

Is pin 5 of IC2004

an above 6 V?

Yes

Check the parts and pattern in
the path. (CN704B pins 18, 19)

No

Check the IC2023 and its
peripheral circuit or replace IC2023.

No

Replace IC2004.

Replace IC2008.

Replace IC2007.

Replace IC2005.

Yes

No

No

Check the pin 73 of IC2023.
Is the voltage 0 to 3.3 V?

Check the circuit between
IC2023 and IC2004 .

Is the voltage 12 V?

Yes

No

Diagonose the MAIN Assy.

No

Diagonose the MAIN
microcomputer (IC2023).

No

Is pin 7 (en) of IC2007

high?

Yes

Yes

No

Diagonose the MAIN
microcomputer (IC2023).

Diagonose the MAIN
microcomputer (IC2023).

No

Is the IC2005 pin 1 high?

No No

Is the voltage 3.3 V?

Is the voltage 1.8 V?

S+3.3V_ON

D+12V

Is the voltage 3.3 V?

IC2005 (pin 5)

Yes

Check the parts and pattern in
the path. (IC2023 pin 55)

No

H+1.8V

DMAIN+5V

DMAIN+3.3V

H+1.8V on/off

To Step 3

A

2 3 4

B

C

D

E

F

24

VSX-522-K

1

2 3 4

5

Diagonose the MAIN
microcomputer (IC2023).

Diagonose the MAIN
microcomputer (IC2023).

Diagonose the MAIN
microcomputer (IC2023) and IC2001

No

IC2023 (pin 77)

Is the voltage 0 to 3.3 V?

No

No

Is there a data output?

(0 to 3.3 V)

Is there a data input

and output? (0 to 3.3 V)

SUB_RST

CSCK_MAIN

IC2023 (pin 80)

Yes

SCDO_MAIN

IC2023 (pin 79)

Yes

Check the parts and patterns
in the path pin 53 of IC2001.

No

Is the voltage 0 to 3.3 V?

EXT_RSTb

IC2000 (pin 94)

Yes

Step 3: Diagnosis

Each data lines confirmation checks it after standby off/on.

Yes

To Step 4

To Step 5

Replace IC2001 or
XTAL2000.

No

Check the path to pin 42 of
IC2001. Replace IC2001.

No

Yes

IC2001 (pin 41)

Is there a 24 MHz input?

Is there a 24 MHz output?

IC2001 (pin 42)

Yes

Replace IC2000 or
XTAL2001.

No

Is there a 18.432 MHz

input?

IC2000 (pin 97)

Yes

Check the path to pin 98 of
IC2000. Replace 2000.

No

Is there a 18.432 MHz

output?

IC2000 (pin 98)

Yes

Step 4: X'TAL

* when connected the equipment
to IN1 (DVD):

+5V_R3

Check the JACK2000.
If JACK2000 is failure,
replace JACK2000.

JACK2001 (pin 18)//+5V_R2//IN2 (SAT/CBL)
JACK2002 (pin 18)//+5V_R1//IN3 (GAME)
JACK2003 (pin 18)//+5V_R0//IN4 (BD)

No

Repeat

Yes

JACK2000 (pin 18)

Is the voltage 5 V?

Step 5: INPUT/OUTPUT Diagnosis

Yes

To Step 6

* when connected the equipment
to IN1 (DVD):

Check the JACK2004.
If JACK2004 is failure,
replace JACK2004.

No

Check the JACK2000 and
IC2000. If JACK2000 or
IC2000 failure, replace
JACK2000 or IC2000.

No

JACK2001 (pin 19)//+5V_R2//IN2 (SAT/CBL)
JACK2002 (pin 19)//+5V_R3//IN3 (GAME)
JACK2003 (pin 19)//+5V_R4//IN4 (BD)

Yes

hot plug detect signal input

HPD1

Yes

JACK2004 (pin 19)

IC2001 (pin 29)

JACK2000 (pin 19)

Is the voltage 5 V?

Check the JACK2000.
If JACK2000 is failure,
replace JACK2000.

No

HP_DET

JACK2000 (pin 19)

Is the voltage 5 V?

Check the pattern and
parts.

No

Yes

Yes

Is the voltage 5 V?

Is the voltage 5 V when

selecting IN1?

Step 6: Hot Plug Detect

Yes

To Step 7

Repeat

6 7 8

A

B

C

D

E

F

5

VSX-522-K

6 7 8

25

1

* when connected the equipment
to IN1 (DVD):

(0 to 5 V)

JACK2001 (pin 18)//+5V_R2//IN2 (SAT/CBL)
JACK2002 (pin 18)//+5V_R1//IN3 (GAME)
JACK2003 (pin 18)//+5V_R0//IN4 (BD)

DDC_SDA (HDMI_OUT)

check the JACK2004 and
IC2001. If JACK2004 or
IC2001 is failure, replace
JACK2004 or IC2001.

No

Check the JACK2004 and
IC2001. If JACK2004 or
IC2001 is failure, replace
JACK2004 or IC2001.

No

Repeat

Yes

IC2001 (pin 7)

Does a signal output

in constant period

(0 to 5 V)?

Does a signal output

in constant period

(0 to 5 V)?

DDC_SCK (HDMI_OUT)

IC2001 (pin 6)

Yes

Check the IC2000, IC2001
and IC2003. If they are
failure, replace them.

No

Is the voltage 0 to 3.3 V?

HSDA

IC2001 (pin 5)

Yes

Check the IC2000, IC2001
and IC2003. If they are
failure, replace them.

No

Is the voltage 0 to 3.3 V?

HSCL

IC2001 (pin 4)

Yes

Yes

DDC0_SDA (HDMI IN1(DVD))

IC2000 (pin 114)

Check the IC2000 and
JACK2000. If IC2000 or
JACK2000 is failure, replace
IC2000 or JACK2000.

No

Yes

Is there a same signal

as IC2000 pin 121 when

selecting IN1?

(0 to 5 V)

DDC0_SCL (HDMI IN1(DVD))

IC2000 (pin 115)

Check the IC2000 and
JACK2000. If IC2000 or
JACK2000 is failure, replace
IC2000 or JACK2000.

No

Is there a same signal

as IC2000 pin 122 when

selecting IN1?

Step 7: SDA /SCL

Yes

To Step 8

TMDS OUTPUT

Check the IC2000.
If IC2000 is failure, replace
IC2000

No

Yes

IC2000 (pins 67,68,70,71,72,73,75,76 )

Are there signals

(approx. 0.5 Vp-p)

IN all lines?

Step 8: TMDS

End

A

2 3 4

B

C

D

E

F

26

VSX-522-K

1

2 3 4

5

Yes

Step 9: HDMI AUDIO

IC2000 (pin 109)

Is there a 24.576 MHz

output?

Is there a 12.28 MHz

output?

*play is Dolby thru HD @ dts master audio source

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

HDMI audio MASTER clock
output

IC2000 (pin 110)

HDMI audio BIT clock output

(0 V ↔ 3.3 V)

(0 V ↔ 3.3 V)

Is there a 192 kHz

output?

IC2000 (pin 111)

HDMI audio LR clock output

(0 V ↔ 3.3 V)

Can observe the

digital signal?

IC2000 (pin 106)

HDMI audio SPDIF OUT

*SPDIF out:Dolby digital,dts..
* not output:Dolby thru HD & dts master audio

(0 V ↔ 3.3 V)

Can observe the

digital signal?

IC2000 (pin 112)

HDMI audio front L/R OUT

(0 V ↔ 3.3 V)

Can observe the

digital signal?

IC2000 (pin 92)

HDMI audio surround L/R OUT

(0 V ↔ 3.3 V)

Can observe the

digital signal?

IC2000 (pin 91)

HDMI audio center/sw OUT

(0 V ↔ 3.3 V)

Can observe the

digital signal?

IC2000 (pin 90)

HDMI audio surroundback OUT
HDMI audio front hight OUT

(0 V ↔ 3.3 V)

Can observe the

digital signal?

IC2016 (pins 1, 176, 175, 174)

HDMI AUDIO is OK

(0 V ↔ 3.3 V)

No

No

No

No

No

No

No

No

No

Check the VDD_PLL and GND
lines. Replace IC2000.

Check the switching IC.
IC2010, IC2014.

6 7 8

A

B

C

D

5

VSX-522-K

6 7 8

E

F

27

1

[3] iPod TROUBLESHOOTING

Step 1: Power supply

Is pin 4 (en) of IC2024 high?

Is pin 8 of IC2024 high?

Is the voltage 5 V

pin 2 of IC2024?

5 V input

Step 0: iPod/USB Power supply

CP2006 (pin 1)

Is the voltage 5 V?

Check the wire between F-USB
and D-MAIN Assemblies.

No

Check the F-USB Assy.

No

Check the USB data line.

No

No

No

Check the path between
IC2023 (pin48).

No

Check the IC2008 DC/DC
convertor circuit.

No

Check the path between
IC2023 (pin57).

No

Replace IC2004.

To Step 1

CP2006 (pin 1)

Is the voltage 5 V?

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Replace IC2021.

No

When SCL and SDA are normal operation = high (3.3 V)

Connect iPod, and communicate it about 10 seconds later (authentication starts).
And communicate it about 60 seconds later (authentication is complete).

Step 2: Operation of iPod (Authentication process)

IC2016 (pins 137, 138)

IC2021 (pins 12, 13)

D_MAIN Assy
USB data D+,D-

SCL, SDA
(I2C between IC2021 and IC2023)

Do D+ and D-

communicate?

Do SCL and SDA

communicate?

Does reset_auth (pin 4)

reset it?

High after the reset.

iPod/USB power is OK.
Go to Step 2.

Operation of IC2021 is OK.
Go to Step 3.

Refer to Step 7 of
"[1] DSP TROUBLESHOOTING."

Replace IC2016.

Step 3: Audio out check

IC2016

Is there a signal?

No

DSP BCK, LRCK, SDINF

A

B

2 3 4

C

D

E

F

28

1

VSX-522-K

2 3 4

5

Functional Name

iPod ERROR MESSAGE

Outline

Error message is displayed at abnormality time.

Basic Operation

Front Key Sequence Change OSD display Time (sec) FL Display

Over Current Error

I/U ERR4

No T rac k Caution

NOTRACK

5.2 USB/iPod ERROR MESSAGE

6 7 8

A

B

C

D

E

F

VSX-522-K

5

6 7 8

29

1

[1] Overload and DC Protection Circuit

C

MAIN ASSY

D

D-MAIN ASSY

B

AMP5 ASSY

B

AMP5 ASSY

2 3 4

5.3 DETECTION CIRCUIT

A

B

C

D

E

F

30

1

2 3 4

VSX-522-K