Pioneer VSX-918 Schematic

PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan

PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936

PIONEER CORPORATION

2008

MASTER
VOLUME

VSX-918V

STANDBY/ON

PHONES

DVD

DVRTV

VIDEO/PORTABLE

CD/CD-R

iPod

FM/AM

XM

SPEAKERS

VSB MODE

SIGNAL
SELECT

SOUND

RETRIEVER

SIRIUS

AUX

PHASE

CONTROL

INPUT

SELECTOR

ADVANCED
SURROUND

STEREO /

A.L.C.

STANDARD

AUDIO/VIDEO MULTI-CHANNEL RECEIVER

ACOUSTICEQPHASE

CONTROL

AUTO SURR /

STREAM DIRECT

MCACC

PORTABLE

iPod DIRECT

AUDIO RL

VIDEO

DIGITAL PRECISION

PROCESSING

VSX-918V-K

AUDIO/VIDEO MULTI-CHANNEL RECEIVER

VSX-918V-K

VSX-918V-S
VSX-818V-K
VSX-818V-S

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

ORDER NO.

RRV3706

Model Type Power Requirement Remarks

VSX-918V-K KUXJ/CA AC 120 V

VSX-918V-S KUXJ/CA AC 120 V

VSX-818V-K KUXJ/CA AC 120 V

VSX-818V-S KUXJ/CA AC 120 V

For details, refer to "Important Check Points for good servicing".

T-ZZK JAN.

2008 Printed in Japan

1

This service manual is intended for qualified service technicians; it is not meant for the casual
do-it-yourselfer. 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.

WARNING
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to
cause cancer, birth defects or other reproductive harm.

Health & Safety Code Section 25249.6 Ð Proposition 65

NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement
parts must be of identical designation.

REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que
les pièces de remplacement doivent avoir la même désignation.

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.

(FOR USA MODEL ONLY)

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 120V
AC 60 Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5 mA.

Device
under
test

Leakage
current
tester

Earth
ground

Reading should
not be above

0.5 mA

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

Test al l
exposed metal
surfaces

AC Leakage Test

2 3 4

SAFETY INFORMATION

A

B

C

D

E

F

2

1

2 3 4

VSX-918V-K

5

6 7 8

A

B

C

D

E

F

VSX-918V-K

5

6 7 8

3

1

2 3 4

CONTENTS

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

1. SERVICE PRECAUTIONS ....................................................................................................................................................5

A

B

C

D

E

F

1.1 NOTES ON SOLDERING ...............................................................................................................................................5

1.2 AMPLIFIER FAILURE DIAGNOSIS FLOW CHART........................................................................................................5

2. SPECIFICATIONS .................................................................................................................................................................6

2.1 SPECIFICATIONS...........................................................................................................................................................6

2.2 PANEL FACILITIES .........................................................................................................................................................7

3. BASIC ITEMS FOR SERVICE.............................................................................................................................................13

3.1 CHECK POINTS AFTER SERVICING..........................................................................................................................13

3.2 JIGS LIST .....................................................................................................................................................................13

3.3 PCB LOCATIONS .........................................................................................................................................................14

4. BLOCK BIAGRAM...............................................................................................................................................................16

4.1 OVERALL WIRING CONNECTION DIAGRAM (VSX-918V) ........................................................................................16

4.2 OVERALL WIRING CONNECTION DIAGRAM (VSX-818V) ........................................................................................18

4.3 BLOCK DIAGRAM (VSX-918V) ....................................................................................................................................20

4.4 BLOCK DIAGRAM (VSX-818V) ....................................................................................................................................22

4.5 DSP BLOCK DIAGRAM................................................................................................................................................24

4.6 HDMI BLOCK DIAGRAM..............................................................................................................................................25

4.7 USB (iPod) BLOCK DIAGRAM .....................................................................................................................................26

5. DIAGNOSIS.........................................................................................................................................................................27

5.1 DIAGNOSIS FLOWCHART...........................................................................................................................................27

5.2 DETECTION CIRCUIT..................................................................................................................................................48

5.3 AMPLIFIER SYSTEM PROTECTION OPERATION SPECIFICATION .........................................................................50

6. SERVICE MODE .................................................................................................................................................................51

7. DISASSEMBLY....................................................................................................................................................................52

8. EACH SETTING AND ADJUSTMENT ................................................................................................................................57

8.1 HOW TO UPDATE FIRMWARE....................................................................................................................................57

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

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

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

9.3 REAR PANEL SECTION...............................................................................................................................................62

9.4 FRONT PANEL SECTION ............................................................................................................................................64

10. SCHEMATIC DIAGRAM ....................................................................................................................................................66

10.1 MAIN ASSY (1/3) ........................................................................................................................................................66

10.2 MAIN ASSY (2/3) ........................................................................................................................................................68

10.3 MAIN ASSY (3/3) ........................................................................................................................................................70

10.4 DSP & USB ASSY (1/4)..............................................................................................................................................72

10.5 DSP & USB ASSY (2/4)..............................................................................................................................................74

10.6 DSP & USB ASSY (3/4)..............................................................................................................................................76

10.7 DSP & USB ASSY (4/4)..............................................................................................................................................78

10.8 POWER PACK (1/2) and TRANS2 ASSYS.................................................................................................................80

10.9 POWER PACK ASSY (2/2) .........................................................................................................................................82

10.10 COMPONENT VIDEO, 5.1CH INPUT and TRANS3 ASSYS ...................................................................................84

10.11 FRONT DISPLAY, ROTARY ENCODER, POWER KEY and JOG ASSYS ...............................................................86

10.12 DIGITAL INPUT, REGULATOR and HEAD PHONE ASSYS.....................................................................................88

10.13 VIDEO, PRIMARY, FRONT VIDEO and TRANS1 ASSYS........................................................................................90

10.14 FRONT IN ASSY.......................................................................................................................................................92

10.15 SIRIUS ASSY ...........................................................................................................................................................94

10.16 HDMI & DSP & USB ASSY (1/5) ..............................................................................................................................96

10.17 HDMI & DSP & USB ASSY (2/5) ..............................................................................................................................98

10.18 HDMI & DSP & USB ASSY (3/5) ............................................................................................................................100

10.19 HDMI & DSP & USB ASSY (4/5) ..............................................................................................

.20 HDMI & DSP & USB ASSY (5/5) ............................................................................................................................104

10

..............................102

11. PCB CONNECTION DIAGRAM ......................................................................................................................................106

11.1 SIRIUS ASSY ...........................................................................................................................................................107

11.2 DSP & USB and HDMI ASSYS.................................................................................................................................108

11.3 MAIN ASSY ..............................................................................................................................................................112

11.4 POWER PACK ASSY................................................................................................................................................116

11.5 TRANS2 and TRANS3 ASSYS.................................................................................................................................120

11.6 COMPONENT VIDEO ASSY....................................................................................................................................122

11.7 5.1CH INPUT and HEAD PHONE ASSYS ...............................................................................................................123

11.8 FRONT DISPLAY, ROTARY ENCODER, POWER KEY and JOG ASSYS ...............................................................124

11.9 DIGITAL INPUT and FRONT VIDEO ASSYS ...........................................................................................................128

11.10 REGULATOR ASSY................................................................................................................................................129

11.11 VIDEO ASSY ..........................................................................................................................................................130

11.12 FRONT IN ASSY.....................................................................................................................................................131

11.13 TRANS1 and PRIMARY ASSYS.............................................................................................................................132

11.14 HDMI & DSP & USB ASSY.....................................................................................................................................134

12. ELECTRICAL PARTS LIST .............................................................................................................................................138

4

1

2 3 4

VSX-918V-K

5

• 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 °C.
Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 °C 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.

Amplifier failure diagnosis flow chart

When DC detection is activated ("AMP_ERR" flashes on the display), failure (damage) of the power amplifier
section is considered.

Caution:
When releasing the lock state of power key before repair, please be careful because there is the
possibility that more damages will occur when turning on the power once again!

• According to a symptom, perform the following confirmation beforehand.

1) Are there any Fuses and IC protectors open?
↓

2) After turn on the power, confirm that the supply voltage of the point that can be measured is appropriate.
(Particularly the supply voltage of the power Tr and drive step)
↓

3) Whether the voltage of pin2 and pin5 of IC601 or IC603 is equal to (VL-0.7V). If not (eg, equal to VH),
then change the corresponding power pack IC601 or IC603.
↓

4) Furthermore, check the output DC voltage of each channel of power pack IC601 and IC603
to limit the failure channel and identify the defect power pack.

↓

• After identify the failure channel, check that each part is not damaged (resistor, diode... etc. value / open /
short)

6 7 8

1. SERVICE PRECAUTIONS

1.1 NOTES ON SOLDERING

A

B

1.2 AMPLIFIER FAILURE DIAGNOSIS FLOW CHART

5

6 7 8

VSX-918V-K

C

D

E

F

5

1

RECEIVER

INPUT SELECT

TV CTRL

SOURCE

TV DVR

SIRIUS

AM

XM

FM

CD-R

CD

PORTABLE

iPodDVD

RECEIVER

RECEIVER CONTROL

TV CONTROL

AV

PARAMETER

TOP MENU

T.EDIT

MENU

RETURNSETUP

GUIDE

CATEGORY

ENTER

TUNE

TUNE

ST ST

MPX

DIMMER SLEEP

D.ACCESS

SIGNAL SEL

iPod CTRL

TV CH

INPUT

SELECT

RECEIVER

MULTI CONTROL

MASTER

VOLUME

ONE TOUCH

COPY

CH+CH

-

AUTO/DIRECT

PHASE

MUTE

ADV SURR

SOUND

RETRIEVER

STEREO/

A.L.C.

ACOUSTIC

EQ

CH SEL

STANDARD

DIALOG

LEVEL

REC ANT AUDIO

SUBTITLE

DVD MEMORY

REC STOP

HDD

TUNER DISP

CLASS

DISC

SR

+

ENTER

INFO

SHIFT

TV VOL

MIDNIGHT

ANALOG ATT

+

10

Amplifier section

•

Front . . .95 W (20 Hz to 20 kHz, THD 0.2 %, 8 Ω)

1

• Rated power output

(surround / 20 Hz to 20 kHz, THD 0.06 %, 8 Ω)

Front . . . . . . . . . . . . . . . . . . . . . .95 W per channel

Center. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 W

Surround. . . . . . . . . . . . . . . . . . .95 W per channel

•

(surround / 1 kHz, THD 0.05 %, 8 Ω)

Front . . . . . . . . . . . . . . . . . . . . .120 W per channel

Center. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 W

Surround. . . . . . . . . . . . . . . . . .120 W per channel

Audio section

•

AUX, CD, CD-R/TAPE/MD, DVD/BD,

TV/SAT, DVR/VCR . . . . . . . . . . . . . .335 mV/47 k

Ω

•

AUX, CD, CD-R/TAPE/MD, DVD/BD,

TV/SAT, DVR/VCR . . . . .5 Hz to 100 000 Hz dB

•

CD-R/TAPE/MD, DVR/VCR . . . . . . 335 mV/2.2 kΩ

•

Bass . . . . . . . . . . . . . . . . . . . . . . . ± 6 dB (100 Hz)

Treble . . . . . . . . . . . . . . . . . . . . . . ± 6 dB (10 kHz)

Loudness . . . . . . +10 dB/+5 dB (100 Hz/10 kHz)

(at volume level –50 dB)

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

AUX, CD, CD-R/TAPE/MD, DVD/BD,

TV/SAT, DVR/VCR . . . . . . . . . . . . . . . . . . . . .96 dB

•

Continuous power output

(stereo)

Rated power output

Input (Sensitivity/Impedance)

Frequency response

Output (Level/Impedance)

Tone control

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

AUX, CD, CD-R/TAPE/MD, DVD/BD,

TV/SAT, DVR/VCR . . . . . . . . . . . . . . . . . . . . 79 dB

Note

1Continuous average power output of 95 watts* per channel, min., at 8 ohms,

from 20 Hz to 20 000 Hz with no more than 0.2 %** total harmonic distortion (front).

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

Video Section

• Input (Sensitivity/Impedance)

DVR/VCR, DVD/BD, TV/SAT . . . . . . . 1 Vp-p/75 Ω

• Output (Level/Impedance)

DVR/VCR, MONITOR OUT . . . . . . . . 1 Vp-p/75 Ω

• Frequency response

DVR/VCR, DVD/BD,

TV/SAT MONITOR . . . . . 5 Hz to 7 MHz dB

Signal-to-Noise Ratio. . . . . . . . . . . . . . . . . . 55 dB

Crosstalk. . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 dB

Component video section

• Input (Sensitivity)

DVD/BD, TV/SAT, DVR/VCR . . . . . . . 1 Vp-p/75 Ω

• Output (Level/Impedance)

MONITOR OUT. . . . . . . . . . . . . . . . . . 1 Vp-p/75 Ω

• Frequency response

DVD/BD, TV/SAT,
DVR/VCR MONITOR . . 5 Hz to 40 MHz dB

Signal-to-Noise Ratio. . . . . . . . . . . . . . . . . . 60 dB

FM Tuner Section

Frequency Range. . . . . . . . 87.5 MHz to 108 MHz

Usable Sensitivity . . . . . . . . .Mono:13.2 dBf, IHF

(1.3 µV/75 Ω)

50 dB Quieting Sensitivity. . . . . . Mono: 20.2 dBf

Stereo: 38.6 dBf

Signal-to-Noise Ratio. . . Mono: 73 dB (at 85 dBf)

Stereo: 70 dB (at 85 dBf)

Distortion . . . . . . . . . . . . . . .Stereo: 0.5 % (1 kHz)

Alternate Channel Selectivity. . . . . . . . . . . 60 dB

(400 kHz)

Stereo Separation . . . . . . . . . . . . . . 40 dB (1 kHz)

Frequency Response. . . . . . . . . . 30 Hz to 15 kHz

(±1 dB)

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

AM Tuner Section

Frequency Range . . . . . . . . .530 kHz to 1700 kHz

Sensitivity (IHF, Loop antenna). . . . . . . 350 μV/m

Signal-to-Noise Ratio . . . . . . . . . . . . . . . . . . 50 dB

Antenna. . . . . . . . . . . . . . . . . . . . . . Loop antenna

Other Input/Output Section

HDMI terminal

Input . . . . . . . . . . . . . . . . . . . . . . . . . . 19 pin x2

Output. . . . . . . . . . . . . . . . .19 pin (5 V, 55 mA)

XM connector . . . . . . . . . . . . .4 pin (5 V, 370 mA)

SIRIUS connector. . . . . . . . . . . . . . . . . . . . . .8 pin

Miscellaneous

Power requirements. . . . . . . . . . .AC 120 V/60 Hz

Power consumption. . . . . . . . . . . . . . . . . . .300 W

In standby . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 W

Dimensions

. . . . . 420 mm (W) x 158 mm (H) x 352.5 mm (D)

. . . . . . . 16 /

16 in. (W) x 6 /4 in. (H) x 13 /8 in. (D)

917

Weight (without package) . . . . 8.1 kg (17 lb 9 oz)

Furnished Parts

Microphone (for Auto MCACC setup) . . . . . . . . .1

Remote control . . . . . . . . . . . . . . . . . . . . . . . . . .1

Dry cell batteries (AA size IEC R6). . . . . . . . . .2

AM loop antenna . . . . . . . . . . . . . . . . . . . . . . . . .1

FM wire antenna . . . . . . . . . . . . . . . . . . . . . . . . .1

Operating instructions

Manufactured under license from Dolby
Laboratories. "Dolby", "Pro Logic" and the
double-D symbol are trademarks of Dolby
Laboratories.

"DTS" is a registered trademark of DTS, Inc.
and "DTS 96/24" is a trademark of DTS, Inc.

Accessories

Remote control
(VSX-918V-K : XXD3147)
(VSX-918V-S : XXD3161)
(VSX-818V-K : XXD3152)
(VSX-818K-S : XXD3163)

AM loop antenna
(ATB7013)

FM wire antenna
(ADH7030)

AA size IEC R6
Dry cell batteries (x2)

Microphone
(for Auto MCACC setup)
(APM7008)

2. SPECIFICATIONS

2.1 SPECIFICATIONS

A

2 3 4

B

C

D

E

F

6

1

2 3 4

VSX-918V-K

5

Front panel

Illustration shows the VSX-918V model

1 STANDBY/ON

2 INPUT SELECTOR dial

Selects an input source.

3 Input select buttons

Selects an input source.

4 Digital Precision Processing indicator

(VSX-918V model only)
Lights to indicate digital processing.

5 Character display

6

MCACC indicator

Lights when Acoustic Calibration EQ
is on (Acoustic Calibration EQ is automatically
set to ALL CH ADJUST after the Auto MCACC
Setup or EQ Auto Setup).

7 MASTER VOLUME dial

8

AUDIO/VIDEO input

9

iPod DIRECT terminal

Use to connect your Apple iPod as an audio
source.

MASTER
VOLUME

VSX-918V

STANDBY/ON

PHONES

DVD DVRTV

VIDEO/PORTABLE

CD/CD-R

iPod

FM/AM

XM

SPEAKERS

VSB MODE

SIGNAL

SELECT

SOUND

RETRIEVER

SIRIUS

AUX

PHASE

CONTROL

INPUT

SELECTOR

ADVANCED
SURROUND

STEREO /

A.L.C.

STANDARD

AUDIO/VIDEO MULTI-CHANNEL RECEIVER

ACOUSTIC

EQ

PHASE

CONTROL

AUTO SURR /

STREAM DIRECT

MCACC

PORTABLE

iPod DIRECT

AUDIO RLVIDEO

DIGITAL PRECISION

PROCESSING

ADVANCED
SURROUND

STEREO /

A.L.C.

STANDARD

ACOUSTIC

EQ

PHASE

CONTROL

AUTO SURR /

STREAM DIRECT

PHONES

SPEAKERS

VSB MODE

SIGNAL
SELECT

SOUND

RETRIEVER

1

12

23 4 6 7

20

5

10

11

14 15 16 17

18 19

13

8 9

10 MCACC PORTABLE jack

Use to connect a microphone when
performing Auto MCACC setup, or connect an
auxiliary component using a stereo mini-jack
cable.

11 PHONES jack

Use to connect headphones (when connected,
there is no sound output from the speakers
(except speaker system B connections)).

12 ST +/–

Use to select preset radio stations.

13 TUNE +/–

Used to find radio frequencies.

14 SOUND RETRIEVER

Press to restore CD quality sound to
compressed audio sources.

15 VSB MODE

Press to switch on/off Virtual Surround Back
(VSB) mode.

16 SPEAKERS

Use to change the speaker system
and the impedance setting.

17SIGNAL SELECT

Selects an input signal.

2.2 PANEL FACILITIES

6 7 8

A

B

C

5

VSX-918V-K

6 7 8

D

E

F

7

1

18 PHASE CONTROL

Press to switch on/off Phase Control.

19 ACOUSTIC EQ

Press to select an Acoustic Calibration EQ
setting.

20Listening mode buttons

AUTO SURR/STREAM DIRECT

Switches between Auto surround mode
(Auto playback) and Stream
Direct playback. Stream Direct playback
bypasses the tone controls for the most
accurate reproduction of a source.

STEREO/A.L.C.

Switches between stereo playback, Auto
level control stereo mode and
Front Stage Surround Advance modes.

STANDARD

Press for Standard decoding and to switch
between the various ∂ Pro Logic II options.

ADVANCED SURROUND

Switches between the various surround
modes.

HDMI

(

DVD / BD) IN

IN

RL

IN

AUX

CD

IN

OUT

DVD / BD

TV
/ SAT

FRONT

DVD5.1
CH INPUT

IN

IN

DVR
/ VCR

DVR
/ VCR IN

TV
/ SAT IN

DVD
/ BD IN

AM

LOOP

IN

OUT

DIGITAL IN

CEN-

TER

SURROUND

DVD 5.1CH INPUT

SIRIUS IN

AC OUTLET

COMPONENT VIDEO

R

L

SUB
WOOFER

OPT

OPT

(

TV / SAT

)

(CD)

R

A

RETNECDNUORRUSTNORF

RRLLL

FM UNBAL

CONTROL

ANTENNA

DVR
/ VCR OUT

MONITOR
OUT

VOIDUAIDEO

XM

IN

IN

OUT

DIGITAL IN

COAX

(

DVD / BD

)

(

ASSIGNABLE

)

PLAY

CD-R

/ TAPE

/ MD

(

ASSIGNABLE

)

(

ASSIGNABLE

)

S
P
E
A
K
E
R
S

1

1

1

2

(

TV / SAT) IN

OUT

2

REC

SUB
WOOFER
PREOUT

B

(

DVR / VCR) IN

Y

PBP

R

MONITOR OUT

(

ASSIGNABLE

)

3

(

DVD / BD) IN

1

(

TV / SAT) IN

2

Y

PBP

R

HDMI

(

DVD / BD) IN

IN

RL

IN

AUX

CD

IN

OUT

DVD / BD

TV
/ SAT

FRONT

DVD5.1
CH INPUT

IN

IN

DVR
/ VCR

DVR
/ VCR IN

TV
/ SAT IN

DVD
/ BD IN

AM

LOOP

IN

OUT

DIGITAL IN

CEN-

TER

SURROUND

DVD 5.1CH INPUT

SIRIUS IN

AC OUTLET

COMPONENT VIDEO

R

L

SUB
WOOFER

OPT

OPT

(

TV / SAT

)

(CD)

R

A

RETNECDNUORRUSTNORF

RRLLL

FM UNBAL

CONTROL

ANTENNA

DVR
/ VCR OUT

MONITOR
OUT

VIDEOOIDUA

XM

IN

IN

OUT

DIGITAL IN

COAX

(

DVD / BD

)

(

ASSIGNABLE

)

CD-R

/ TAPE

/ MD

(

ASSIGNABLE

)

(

ASSIGNABLE

)

S
P
E
A
K
E
R
S

1

1

1

2

(

TV / SAT) IN

OUT

2

SUB
WOOFER
PREOUT

B

(

DVR / VCR) IN

Y

PBP

R

MONITOR OUT

(

ASSIGNABLE

)

3

(

DVD / BD) IN

1

(

TV / SAT) IN

2

Y

PBP

R

VSX-918V

A

B

2 3 4

C

D

E

F

8

1

2 3 4

VSX-918V-K

ANALOG

Lights when an analog signal is detected.

DTS

Lights when a source with DTS encoded
audio signals is detected.

2

Lights to indicate decoding of a DTS multichannel
signal.

3

∂ DIGITAL

Lights to indicate decoding of a Dolby Digital
multichannel signal.

4 ∂ PRO LOGIC II

Lights to indicate Pro Logic II decoding.

5 VIR. SB

Lights during Virtual surround back processing.

6 DIRECT

Lights when source Stream Direct playback is in
use. Direct playback bypasses the tone controls
for the most accurate reproduction of a source.

7 AUTO SURR.

Lights when Auto Surround or XM HD Surround
is on.

8 ATT

Lights when ANALOG ATTis used to attenuate
(reduce) the level of the analog input signal.

9 SLEEP

Lights when the sleep mode is active.

10 Tuner indicators

/ MONO
Lights when the mono mode is set using
the MPX button.

/ STEREO
Lights when a stereo FM broadcast is being
received in auto stereo mode.

/ TUNED
Lights when a broadcast is being received.

11 Speaker indicators

Lights to indicate the current speaker system,

A and/or B.

12 Character display

13

ADV.SURR. (Advanced Surround)

Lights when one of the Advanced Surround
modes has been selected.

14 WMA9 Pro

Lights to indicate decoding of a WMA9 Pro
signal.

15 MIDNIGHT

Lights during Midnight listening.

16 D.E.

Lights when Dialog Enhancement is switched.

17 LOUDNESS

Lights during Loudness listening.

18 Master volume level

Shows the overall volume level.

19 MCACC channel EQ / Sound Retriever /
HDMI indicators

These indicators show the EQ balance for
each channel in Checking your Acoustic
Calibration EQ settings. Also, L and
R light when the Sound Retriever is active.

In addition, the HDMI connection state is
displayed as shown below.

Blinks when connecting an HDMI-equipped
component: lights when the component is
connected.

6

6

0

L
C
R

L

s

R

s

[]

[]

[]

[]

[]

HDMI indicator

Display

1 SIGNAL indicators

Lights to indicate the type of input signal:

AUTO
Lights when AUTO signal select is on.

DIGITAL

Lights when a digital audio signal is
detected.

∂ DIGITAL

Lights when a Dolby Digital encoded signal
is detected.

6

6

0

L
C
R

L

s

R

s

[]
[]
[]

[]

[]

40

125

250 4K13

K

SPAB

7654321 118 910

12

1514 16 1713 18 19

5

6 7 8

A

B

C

D

5

VSX-918V-K

6 7 8

E

F

9

1

3 MULTI CONTROL buttons

Press to select control of other components.

TV CTRL,PORTABLE,CD-R,XM and SIRIUS

buttons can be used with SHIFT button.

4 RECEIVER CONTROL buttons

AUTO/DIRECT

Switches between Auto surround mode
(Auto playback) and Stream
Direct playback. Direct playback bypasses
the tone controls for the most accurate
reproduction of a source.

STEREO/A.L.C.

Switches between stereo playback, Auto
level control stereo mode and
Front Stage Surround Advance modes.

STANDARD

Press for Standard decoding and to switch
between ∂ Pro Logic II options.

ADV SURR

Switches between the various surround
modes.

PHASE

Press to switch on/off Phase Control.

ACOUSTIC EQ

Press to select an Acoustic Calibration EQ
setting.

DIALOG

Use to make dialog stand out when
watching TV or a movie.

SOUND RETRIEVER

Press to restore CD quality sound to
compressed audio sources.

MUTE

Mutes/unmutes the sound.

CH SEL

Press repeatedly to select a channel, then
use LEVEL +/– to adjust the level.

Remote control

Illustration shows the VSX-918V model

1 INPUT SELECT
Use to select the input source (use SHIFT for
INPUT SELECT ).

2 RECEIVER

Switches the receiver between standby and on.

RECEIVER

INPUT SELECT

TV CTRL

SOURCE

TV DVR

SIRIUS

AM

XM

FM

CD-R

CD

PORTABLE

iPodDVD

RECEIVER

RECEIVER CONTROL

TV CONTROL

AV
PARAMETER

TOP MENU

T.EDIT
MENU

RETURNSETUP

GUIDE

CATEGORY

ENTER

TUNE

TUNE

ST ST

MPX

DIMMER SLEEP

D.ACCESS

SIGNAL SEL

iPod CTRL

TV CH

INPUT

SELECT

RECEIVER

MULTI CONTROL

MASTER
VOLUME

ONE TOUCH

COPY

CH

+

CH

-

AUTO/ DIRECT

PHASE

MUTE

ADV SURR

SOUND

RETRIEVER

STEREO/

A.L.C.

ACOUSTIC

EQ

CH SEL

STANDARD

DIALOG

LEVEL

REC ANT AUDIO

SUBTITLE

DVD MEMORY

REC STOP

HDD

TUNER DISP

CLASS

DISC

SR

+

ENTER

INFO

SHIFT

TV VOL

MIDNIGHT

ANALOG ATT

+

10

4

7

5

3

8

9

6

10

12

11

13

14

1

2

GUIDE

Displays/changes the subtitles on
multilingual DVDs.

LEVEL +/–

Use to adjust the channel levels.

MASTER VOLUME +/–

Use to set the listening volume.

5 System Setup and Component control
buttons

The following button controls can be accessed
after you have selected the corresponding

MULTI CONTROL button (DVD,DVR,
RECEIVER, etc.).

AV PARAMETER

Use to access the AV options.

TOP MENU

Displays the disc ‘top’ menu of a DVD.

ONE TOUCH COPY*

Copies the currently playing title from DVD
to HDD or vice-versa.

CATEGORY

Press to browse digital radio broadcasts.

SETUP

Press to access the System Setup menu.
Also functions as the SETUP
button for DVD/DVR units.

A

2 3 4

B

C

D

E

F

10

1

VSX-918V-K

2 3 4

5

T.EDIT

Memorizes/names stations for recall.

MENU

Displays the disc menu of DVD-Video discs.

RETURN

Confirm and exit the current menu screen.

CH +/–*

Use to select channels for DVD/DVR units.

6

(TUNE , ST ), ENTER

Use the arrow buttons when setting up your
surround sound system. Also used to
control DVD menus/options.

Use the TUNE buttons can be used to
find radio frequencies and the ST
buttons can be used to select preset radio
stations.

7 Component control buttons

The main buttons ( , , etc.) are used to
control a component after you have selected it
using the MULTI CONTROL buttons.

The controls above these buttons can be
accessed after you have selected the
corresponding MULTI CONTROL button (for
example DVD,DVR or TV (when connected to
a DTV)).

SUBTITLE*

Displays/changes the subtitles included
in multilingual DVD-Video discs.

REC*

Start recording.

AUDIO*

Changes the audio language or channel
on DVD discs.

HDD*, DVD*

These buttons switch between the hard
disk and DVD controls for HDD/DVD
recorders.

REC STOP*

Stops recording.

ANT

Use to select the VHF/UHF antennas or
Cable TV.

MEMORY

Use to register a song title you are currently
listening to.

8 Number buttons and other component
controls

Use the number buttons to directly select a
radio frequency or the tracks on a
CD, DVD, etc. There are other buttons that can
be accessed after the RECEIVER button is
pressed. (For example MIDNIGHT, etc.)

TUNER DISP*

Switches between named station presets
and radio frequencies.

CLASS*

Switches between the three banks
(classes) of radio station presets.

MPX*

Switches between stereo and mono
reception of FM broadcasts. If the signal is
weak then switching to mono will improve
the sound quality.

D.ACCESS*

After pressing, you can access a radio
station directly using the number buttons.

MIDNIGHT

Switches to Midnight or Loudness
listening.

ANALOG ATT

Attenuates (lowers) the level of an analog
input signal to prevent distortion.

DIMMER

Dims or brightens the display.

SLEEP

Press to change the amount of time before
the receiver switches into standby (30 min
– 60 min – 90 min – Off). You can check
the remaining sleep time at any time by
pressingSLEEP once.

SIGNAL SEL

Use to select an input signal.

SR + (VSX-918V model only)
Switches the SR+ mode on/off.

iPod CTRL

Switches between the iPod controls and
the receiver controls.

DISC (ENTER)

Use to enter commands for TV or DTV, and
also use to select a disc in a multi-CD
player.

9 INFO

Use to bring up information screens on a
digital TV.

10 SHIFT

Press to access the ‘boxed’ commands (above
the buttons) on the remote. These buttons are
marked with an asterisk (* ) in this section.

11 Remote control LED

Lights when a command is sent from the
remote control.

12 SOURCE

Press to turn on/off other components
connected to the receiver.

13 RECEIVER

Switches the remote to control the receiver
(used to select the green commands above the
number buttons (SETUP, etc)). Also use this
button to set up surround sound.

14 TV CONTROL buttons

These buttons are dedicated to control the TV
assigned to the TV CTRL button. Thus if you
only have one TV to hook up to this system
assign it to the TV CTRL MULTI CONTROL
button. If you have two TVs, assign the main TV
to the TV CTRLbutton.

Use to turn on/off the power of the TV.

INPUT SELECT

Use to select the TV input signal.

TV CH +/–

Use to select channels.

TV VOL +/–

Use to adjust the volume on your TV.

6 7 8

A

5

VSX-918V-K

6 7 8

B

C

D

E

F

11

1

Using this receiver with a
Pioneer flat panel TV

(VSX-918V model only)

If you have a Pioneer flat panel TV , you can

1

use an SR+ cable to connect it to this unit and
take advantage of various convenient features,
such as automatic video input switching of the
flat panel TV when the input is changed.

HDMI

(

DVD / BD) IN

IN

RL

IN

AUX

CD

IN

OUT

DVD / BD

TV
/ SAT

FRONT

DVD5.1
CH INPUT

IN

IN

DVR
/ VCR

DVR
/ VCR IN

TV
/ SAT IN

DVD
/ BD IN

AM

LOOP

IN

OUT

FM UNB

AL

CONTROL

ANTENNA

DVR
/ VCR OUT

MONITOR
OUT

AOEDIVOIDU

XM
IN

IN

OUT

DIGITAL IN

COAX

(

DVD / BD

)

(

ASSIGNABLE

)

CD-R

/ TAPE

/ MD

(
ASSIGNABLE

)

(

1

1

(

TV / SAT) IN

OUT

2

SUB
WOOFER
PREOUT

OUT

CONTROL

Pioneer plasma display

VSX-918V

• SR+ mini-plug cable
(ADE7095)

SERVICE PARTS

Note

1 This receiver is compatible with all Pioneer flat panel TVs from 2003 onward.

• Use a 3-ringed miniplug SR+ cable to

1

connect the CONTROL INjack of this receiver
with the

CONTROL OUT of your flat panel TV.

Before you can use the extra SR+ features, you
need to make a few settings in the receiver.

To make the most of the SR+ features, you
should connect your source components (DVD
player, etc.) in a slightly different way to that
described in this chapter. For each
component, connect the video output directly
to the flat panel TV, and just connect the
audio (analog and/or digital) to this receiver.

Using the SR+ mode with a Pioneer
flat panel TV

When connected using an SR+ cable, a
number of features become available to make
using this receiver with your Pioneer flat panel
TV even easier. These features include:

• On-screen volume display.

• On-screen display of listening mode.

• Automatic video input switching on the
flat panel TV.

• Automatic volume muting on the flat
panel TV.

2

1 Make sure that the flat panel TV and
this receiver are switched on and that they
are connected with the SR+ cable.

2 To switch SR+ mode on/off, press

RECEIVER, then the SR+ button.
The front panel display shows SR+ ON or OFF.

Note

1• The 3-ringed SR+ cable from Pioneer is commercially available under the part number ADE7095. Contact the Pioneer

Customer Support division for more information on obtaining an SR+ cable (you can also use a commercially available 3­ringed mini phone plug for the connection).

• If you connect to a Pioneer flat panel TV using an SR+ cable, you will need to point the remote control at the flat panel TV
remote sensor to control the receiver. In this case, you won’t be able to control the receiver using the remote control if you
switch the flat panel TV off.

DVD player

VSX-918V

Pioneer flat panel TV

Satellite receiver, etc

VIDEO

INPUT 1

VIDEO

INPUT 2

TV/SAT

AUDIO IN

DVD/BD

AUDIO IN

MASTER
VOLUME

VSX-918V

STANDBY/ON

PHONES

RVDDVDTV

VIDEO/PORTABLE

CD/CD-R iPod

FM/AM

XM

SPEAKERS

VSB MODE

SIGNAL
SELECT

SOUND
RETRIEVER

SIRIUS

AUX

PHASE
CONTROL

INPUT

SELECTOR

ADVANCED
SURROUND

STEREO /
A.L.C.

STANDARD

AUDIO/VIDEO MULTI-CHANNEL RECEIVER

ACOUSTICEQPHASE

CONTROL

AUTO SURR /

STREAM DIRECT

MCACC

PORTABLE

iPod DIRECT

AUDIORLVIDEO

DIGITAL PRECISION

PROCESSING

2 The automatic volume muting feature is enabled separately.

RECEIVER

INPUT SELECT

TV CTRL

SOURCE

TV DVR

SIRIUS

AM

XM

FM

CD-R

CD

PORTABLE

iPodDVD

RECEIVER

MULTI CONTROL

TV CONTROL

MPX

DIMMER

iPod CTRL

SLEEP

D.ACCESS

SIGNAL SEL

INPUT

TUNER DISP

CLASS

DISC

SR+

ENTER

INFO

MIDNIGHT

ANALOG ATT

+10

2 3 4

A

B

C

D

E

F

12

VSX-918V-K

1

2 3 4

5

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

No.

Procedure 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 sound from headphone output. Sound must be normal, without noise.

7

Check the appearance of the product. No scratches or dirt on its appearance after receiving

it for service.

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

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

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

Before shipping out the product, be sure to clean the following positions by using the prescribed cleaning tools:

CLEANING

Position to be cleaned Cleaning tools

Fans Cleaning paper : GED-008

Name Jig No. Remarks

13P board to board extension jig

cable

GGD1483

Diagonosis

21P board to board extension jig

cable

GGD1485

Diagonosis

Jigs list

6 7 8

3. BASIC ITEMS FOR SERVICE

3.1 CHECK POINTS AFTER SERVICING

A

B

C

D

E

3.2 JIGS LIST

5

6 7 8

VSX-918V-K

F

13

1

H

FRONT DISPLAY

ASSY

R

FRONT VIDEO
ASSY

I

ROTARY ENCODER
ASSY

T

FRONT IN
ASSY

A

MAIN
ASSY

N

REGULATOR
ASSY

C

POWER PACK
ASSY

V

HDMI&DSP
&USB ASSY

POWER KEY

ASSY

J

TRANS 3

ASSY

G

BIND

ASSY

PRIMARY

ASSY

Q

TRANS 1

ASSY

S

TRANS 2

ASSY

D

HEADPHONE

ASSY

O

FM/AM TUNER UNIT

P

VIDEO ASSY

M

DIGITAL INPUT ASSY

F

5.1CH INPUT ASSY

E

COMPONENT VIDEO ASSY

U

SIRIUS ASSY

1..HDMI&DSP&USB ASSY AWX9162

NSP 1..COMPLEX ASSY XWK3340

2..FRONT DISPLAY ASSY XWZ4285

2..ROTARY ENCODER ASSY XWZ4286

2..POWER KEY ASSY XWZ4288

2..JOG ASSY XWZ4289

2..VIDEO ASSY XWZ4294

2..DIGITAL INPUT ASSY XWZ4299

2..FRONT VIDEO ASSY XWZ4300

2..PRIMARY ASSY XWZ4305

2..REGULATOR ASSY XWZ4316

2..TRANS 1 ASSY XWZ4320

2..HEADPHONE ASSY XWZ4321

NSP 1..AMP ASSY XWK3348

2..POWER PACK ASSY XWZ4325

2..TRANS 2 ASSY XWZ4335

2..TRANS 3 ASSY XWZ4337

2..COMPONENT VIDEO ASSY XWZ4339

2..5.1CH INPUT ASSY XWZ4341

2..SIRIUS ASSY XWZ4343

2..BIND ASSY XWZ4344

1..MAIN ASSY XWK3362

1..FRONT IN ASSY XWK3366

1..FM/AM TUNER UNIT AXX7210

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.

JOG ASSY

K

VSX-918V

3.3 PCB LOCATIONS

A

2 3 4

B

C

D

E

F

14

1

2 3 4

VSX-918V-K

H

FRONT DISPLAY

ASSY

R

FRONT VIDEO
ASSY

I

ROTARY ENCODER
ASSY

T

FRONT IN
ASSY

A

MAIN
ASSY

N

REGULATOR
ASSY

C

POWER PACK
ASSY

W

HDMI ASSY

B

DSP&USB ASSY

POWER KEY

ASSY

J

TRANS 3

ASSY

G

BIND

ASSY

PRIMARY

ASSY

Q

TRANS 1

ASSY

S

TRANS 2

ASSY

D

HEADPHONE

ASSY

O

FM/AM TUNER UNIT

P

VIDEO ASSY

M

DIGITAL INPUT ASSY

F

5.1CH INPUT ASSY

E

COMPONENT VIDEO ASSY

U

SIRIUS ASSY

1..HDMI ASSY AWX8966

1..DSP&USB ASSY AWX9163

NSP 1..COMPLEX ASSY XWK3335

2..FRONT DISPLAY ASSY XWZ4284

2..ROTARY ENCODER ASSY XWZ4286

2..POWER KEY ASSY XWZ4287

2..JOG ASSY XWZ4289

2..VIDEO ASSY XWZ4292

2..DIGITAL INPUT ASSY XWZ4299

2..FRONT VIDEO ASSY XWZ4300

2..PRIMARY ASSY XWZ4305

2..REGULATOR ASSY XWZ4316

2..TRANS 1 ASSY XWZ4320

2..HEADPHONE ASSY XWZ4321

NSP 1..AMP ASSY XWK3348

2..POWER PACK ASSY XWZ4325

2..TRANS 2 ASSY XWZ4335

2..TRANS 3 ASSY XWZ4337

2..COMPONENT VIDEO ASSY XWZ4339

2..5.1CH INPUT ASSY XWZ4341

2..SIRIUS ASSY XWZ4343

2..BIND ASSY XWZ4344

1..MAIN ASSY XWK3358

1..FRONT IN ASSY XWK3366

1..FM/AM TUNER UNIT AXX7210

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.

JOG ASSY

K

VSX-818V

5

6 7 8

A

B

C

D

E

F

5

VSX-918V-K

6 7 8

15

1

5/280

14/200

35/320

9/90

4/230

19/170

7/190

11/120

9/230

11/200

*7

3/300

1912

XDD3248

CN5

5

CN805

CN1

21

13 21

CN816

CN111

21

CN2

CN806

CN815

15

CN109

15

CN704

CN110

17

17

1918

14

CN4

14

CN106

XDD3249

XDD3252

35

CN3

1917

9

CN122

35

CN112

CN401

CN101CN107

XDD3247

1906

XDX3063

1904

3/350

1902

CN956

CN953

CN951

17/110

CN901

1905

1908

CN105

CN129

7

19

XDD3253

CN803

CN302

6

CN1903

CN103

11

1911

1919

XDD3189

XDD3235

CN303

CN310

CN354

CN307

CN132

1903

XDD3258

CN701

CN252

810

XDX3066

J43

CN702

CN251

CN800

2/500
XDX3054

511

J42

5/125

D15A05-125-2651

XDD3200

XDX3064

CN401

404

J22

E.g. 7/140

140: Insulation length (mm)

7: Number of contacts (pin)

WIRE INDICATION

XXM3012

FAN

A 1/3 - A 3/3

A

FRONT DISPLAY ASSY
(VSX-918V:XWZ4285)

H

T

F

P

DIGITAL
INPUT ASSY
(XWZ4299)

5.1CH
INPUT ASSY
(XWZ4341)

M

N

MAIN ASSY

(VSX-918V : XWK3362)

VIDEO ASSY
(VSX-918V : XWZ4294)

POWER PACK
ASSY
(XWZ4325)

REGULATOR
ASSY
(XWZ4316)

FRONT IN ASSY
(XWK3366)

HDMI&DSP&USB ASSY

(VSX-918V:AWX9162)

C 1/2 -

C 2/2

C

ROTARY
ENCODER
ASSY
(XWZ4286)

I

FRONT VIDEO
ASSY
(XWZ4300)

R

FM/AM TUNER

UNIT (AXX7210)

(Note :
No schematic diagram)

V 1/5 - V 5/5

V

2 3 4

4. BLOCK BIAGRAM

4.1 OVERALL WIRING CONNECTION DIAGRAM (VSX-918V)

A

B

C

D

E

F

16

1

VSX-918V-K

2 3 4

6/400

CN7301

EXCEPT /SP,SF MODEL

AC CORD

CN551

FU1

CN51

PRIMARY

55

J2

J1

J21

11/300

D20PYY1130E

D20PYY0410E

4/100

J52

CN1201

851

XDX3065

J47

J5

891

J7 J3 J4 J6

1551

470

D15A03-100-2651

D15A03-100-2651

471

J44

3/100

512

3/100

J41

501

1.5mm FLAT CABLE

2.0mm CABLE CONNECTOR

2.0mm FLAT CABLE

1.25mm REVERSE FFC

1.25mm FFC

2.0mm CABLE HOLDER

1.5mm CABLE HOLDER

1.25mm FFC CONNECTOR

EH CONNECTOR

B*B-EH

B*B-PH-K-S
PH CONNECTOR

1.0mm FFC

1.25mm FFC CONNECTOR(L)

1.0mm FFC CONNECTOR

BOARD IN

AC CODE CONNECTOR

AC CODE SOCKET

1.25mm BOARD to BOARD SOCKET

1.25mm BOARD to BOARD PLUG

2.0mm BOARD to BOARD PLUG

2.0mm BOARD to BOARD SOCKET

MAIN TRANS

D

S

G

Q

E

COMPONENT
VIDEO ASSY

(XWZ4339)

SIRIUS ASSY
(XWZ4343)

U

TRANS2 ASSY
(XWZ4335)

TRANS 1 ASSY
(XWZ4320)

(XWZ4305)

PRIMARY ASSY

TRANS3 ASSY
(XWZ4337)

POWER KEY ASSY
(VSX-918V:XWZ4288)

J

JOG ASSY
(XWZ4289)

K

HEAD PHONE ASSY
(XWZ4321)

O

k

When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS

LIST" or "PCB PARTS LIST".

k

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.

k

: The power supply is shown with the marked box.

5

6 7 8

A

B

C

D

5

VSX-918V-K

6 7 8

E

F

17

1

XDD3256

1910

5/200

14/200

23/320

5/60

7/190

9/100

4/300

17/110

7/190

13/170

11/120

9/230

11/200

3/300

XDD3248

1912

5

CN5

21

13 21

21

CN816

CN1

CN815

CN805

15

CN111

15

CN109

CN704

CN806

CN2

17

CN110

17

CN401

XDD3252

1903

CN4

14 23

5

23

CN106

14

CN6

1916

XDD3250

CN7

CN112

CN1002

CN1001

1909

XDD3255

9

CN104

7

CN107 CN101
CN108

CN122

XDD3247

1906

XDX3063

1904

3/350

1902

CN956

CN953

CN951

1905

CN901

7

13

XDD3259

1907

CN130

CN105

CN803

CN302

6

CN1903

11

1911

XDD3189

XDD3235

1919

CN103

CN303

CN310

CN304

CN354

CN307

XDD3258

CN132

1903

CN701

CN252

810

XDX3066

J43

CN702

CN251

CN800

2/500

XDX3054

511

J42

5/125

D15A05-125-2651

XDD3200

XDX3064

CN401

404

J22

E.g. 7/140

140: Insulation length (mm)

7: Number of contacts (pin)

WIRE INDICATION

XXM3012

FAN

A 1/3 - A 3/3

A

FRONT DISPLAY ASSY
(VSX-818V:XWZ4284)

H

T

F

P

DIGITAL
INPUT ASSY
(XWZ4299)

5.1CH
INPUT ASSY
(XWZ4341)

M

N

MAIN ASSY

(VSX-818V : XWK3358)

VIDEO ASSY
(VSX-818V : XWZ4292)

POWER PACK
ASSY
(XWZ4325)

REGULATOR
ASSY
(XWZ4316)

FRONT IN ASSY
(XWK3366)

DSP&USB ASSY (VSX-818V : AWX9163)

HDMI ASSY

B 1/4 - B 4/4

B

W

C 1/2 -

C 2/2

C

ROTARY
ENCODER
ASSY
(XWZ4286)

I

FRONT VIDEO
ASSY
(XWZ4300)

R

(AWX8966)

FM/AM TUNER

UNIT (AXX7210)

(Note :
No schematic diagram)

(No schematic diagram)

2 3 4

4.2 OVERALL WIRING CONNECTION DIAGRAM (VSX-818V)

A

B

C

D

E

F

18

1

2 3 4

VSX-918V-K

6/400

CN7301

AC CORD

CN551

FU1

CN51

55

J1

J2

J21

11/300

D20PYY1130E

D20PYY0410E

4/100

J52

851

XDX3065

J47

891

J7 J5 J3 J4 J6

1551

470

D15A03-100-2651

D15A03-100-2651

471

J44

3/100

512

3/100

J41

501

CN1201

1.5mm FLAT CABLE

2.0mm CABLE CONNECTOR

2.0mm FLAT CABLE

1.25mm REVERSE FFC

1.25mm FFC

2.0mm CABLE HOLDER

1.5mm CABLE HOLDER

1.25mm FFC CONNECTOR

EH CONNECTOR

B*B-EH

B*B-PH-K-S
PH CONNECTOR

1.0mm FFC

1.25mm FFC CONNECTOR(L)

1.0mm FFC CONNECTOR

BOARD IN

AC CODE CONNECTOR

AC CODE SOCKET

1.25mm BOARD to BOARD SOCKET

1.25mm BOARD to BOARD PLUG

2.0mm BOARD to BOARD PLUG

2.0mm BOARD to BOARD SOCKET

MAIN TRANS

D

S

G

Q

E

COMPONENT
VIDEO ASSY

(XWZ4339)

SIRIUS ASSY
(XWZ4343)

U

TRANS2 ASSY
(XWZ4335)

TRANS 1 ASSY
(XWZ4320)

(XWZ4305)

PRIMARY ASSY

TRANS3 ASSY
(XWZ4337)

POWER KEY ASSY
(VSX-818V:XWZ4287)

J

JOG ASSY
(XWZ4289)

K

HEAD PHONE ASSY
(XWZ4321)

O

k

When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS

LIST" or "PCB PARTS LIST".

k

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.

k

: The power supply is shown with the marked box.

5

6 7 8

A

B

C

D

E

5

6 7 8

VSX-918V-K

F

19

1

SW

HDMI REPEATER

To DSP section

To Sys uCom

CN307 CN105

SL/SR

HDMI

IN1

HDMI

IN2

HDMI

OUT

C

OPT2

XM RADIO

OPT1

BU9450KV

XMDT

SERIAL ROM

HDMI

BLOCK

PDC173A8

4M

AWX9162 : /KU
AWX8977 : (Others)

COAX1

USB A-TYPE

TELECHIPS

USB

AK4114VQ

74VHC157

(DIR)

CD-R OUT

SIRIUS

VCR/DVR OUT

L/R

(ADC)

(for DECODE)

LPF

DSP IC

DSPC56371AF180

IC104

(SW)

NJM4565

(C)

IC103

IC104

(SL/SR)

(DAC)

(CODEC)

AK4626AVQ

IC105

(FL/FR)

FUNCTION
SELECTOR

FRONT AUDIO IN

VIDEO(Front)

DVD/LD

CD-R/TAPE

TV/SAT

L/R

L/R

L/R

L/R

L/R

L/R

AUX

CD

VCR/DVR

L/R

L/R

L/R

MODULE

TUNER

L/R

R

MIC

L

L/R

(For Setup)

BLOCK DIAGRAM FOR VSX-918V

To

EVOL/SELE

IC108

BD3474KS2

LIP SYNC

ML87V5002

74VHC157

IC611

CXB1444R

(HDMI

CABLE

EQ SW)

IC651

SiI9013CLU

(HDMI

RECEIVER)

IC801

PEG118A

(HDMI
uCom)

IC861

FLASH

ROHM

IC701

SiI9134CTU

(HDMI

TRANSMITTER)

Cr

(DRIVER)

NJM2581M

6dB

IC553

OUT

COMPONENT

Y

Cb

TC74HC4052AF

6dB

6dB

COMPONENT3

Cb

Cr

Y

Cr3

Cr2

Cr1

Cr Cb

Cb2

Cb1

Cb3

Y

COMPONENT2

Cr

Cb

TC74HC4052AF

Y2

IC552

(COMPO SEL)

Cb

Cr

Y

COMPONENT1

Y3

Y1

Y

IC551

(COMPO SEL)

CN2CN109

CN5CN1903

V

HDMI & DSP & USB ASSY

1/2

V

HDMI &
DSP &
USB ASSY

2/2

A

MAIN ASSY

E

COMPONENT
VIDEO ASSY

F

5.1CH
INPUT ASSY

M

DIGITAL
INPUT ASSY

4.3 BLOCK DIAGRAM (VSX-918V)

A

B

C

D

2 3 4

E

F

20

1

VSX-918V-K

2 3 4

GND

GND

GND

GND

CN111 CN302

SW2

SW1

FUNCTION
SELECTOR

(SL/SR)

A. MUTE

(C)

A. MUTE

A. MUTE

Q303

SW
PREOUT

RY50 1

SP B
L/R

Q631

30dB

RY75 3

C

SL/SR

Ton e

9.5dB

9.5dB

(FL/FR)

IC108

BD3474KS2

CN110 CN704

CN702

: AUDIO SIGNAL FLOW

: VIDEO SIGNAL FLOW

Q601

30dB

IC601 (1/2)
IC603 (2/3)

RY75 1

RY75 2

FL/FR

A. MUTE

Q1551

1551

VIDEO
(Front)

CN901 CN301

9.5dB

9.5dB

GND

A. MUTE

Q651

30dB

IC601 (2/2)
IC603 (3/3)

IC603 (1/3)

POWER PACK ASSY

DVR REC

MONITOR

TV/SAT

DVD/LD

CN310

DVR

(COMPOSITE SEL)

NJM2595M

IC301

OSD

IC302

NJM2243M

(VIDEO/OSD SEL)

IC851

(PDC132A)

P

VIDEO ASSY

O

HEAD PHONE ASSY

C

POWER
PACK ASSY

5

6 7 8

A

B

C

D

E

VSX-918V-K

5

6 7 8

F

21

1

SW

CN307

CN2CN109

CN105

SL/SR

HDMI

IN1

HDMI

IN2

HDMI

OUT

C

OPT2

XM RADIO

OPT1

BU9450KV

XMDT

SERIAL ROM

IC101

CXB1444R

(HDMI SW)

IC102

TC7MB3253FK

(DDC SW)

CN1001

Main uCom

PDC172A8

1M

AWX9163 : /KU
AWX9164 : /MY
AWX8979 : (Others)

COAX1

USB A-TYPE

TELECHIPS

USB

AK4114VQ

74VHC157

(DIR)

CD-R OUT

SIRIUS

VCR/DVR OUT

L/R

(ADC)

(for DECODE)

LPF

DSP IC

DSPC56371AF180

IC104

(SW)

NJM4565

(C)

IC103

IC104

(SL/SR)

(DAC)

(CODEC)

AK4626AVQ

IC105

(FL/FR)

FUNCTION
SELECTOR

FRONT AUDIO IN

VIDEO(Front)

DVD/LD

CD-R/TAPE

TV/SAT

L/R

L/R

L/R

L/R

AUX

CD

VCR/DVR

L/R

L/R

L/R

MODULE

TUNER

L/R

R

MIC

L

L/R

(For Setup)

BLOCK DIAGRAM FOR VSX-818V

To

EVOL/SELEC

IC108

BD3474KS2

LIP SYNC

ML87V5002

Cr

(DRIVER)

NJM2581M

6dB

IC553

OUT

COMPONENT

Y

Cb

TC74HC4052AF

6dB

6dB

COMPONENT3

Cb

Cr

Y

Cr3

Cr2

Cr1

Cr Cb

Cb2

Cb1

Cb3

Y

COMPONENT2

Cr

Cb

TC74HC4052AF

Y2

IC552

(COMPO SEL)

Cb

Cr

Y

COMPONENT1

Y3

Y1

Y

IC551

(COMPO SEL)

CN5CN1903

B

DSP & USB ASSY

W

HDMI ASSY

A

MAIN ASSY

E

COMPONENT
VIDEO ASSY

F

5.1CH
INPUT ASSY

M

DIGITAL
INPUT ASSY

4.4 BLOCK DIAGRAM (VSX-818V)

A

B

C

D

2 3 4

E

F

VSX-918V-K

22

1

2 3 4

GND

GND

GND

GND

CN111 CN302

SW2

SW1

FUNCTION

SELECTOR

(SL/SR)

A. MUTE

(C)

A. MUTE

A. MUTE

Q303

SW
PREOUT

RY50 1

SP B
L/R

Q631

30dB

RY75 3

C

SL/SR

Ton e

9.5dB

9.5dB

(FL/FR)

IC108

BD3474KS2

CN110 CN704

CN702

: AUDIO SIGNAL FLOW

: VIDEO SIGNAL FLOW

Q601

30dB

IC601 (1/2)
IC603 (2/3)

RY75 1

RY75 2

FL/FR

A. MUTE

Q1551

1551

VIDEO
(Front)

CN901 CN301

9.5dB

9.5dB

GND

A. MUTE

Q651

30dB

IC601 (2/2)
IC603 (3/3)

IC603 (1/3)

POWER PACK ASSY

DVR REC

MONITOR

TV/SAT

DVD/LD

CN310

DVR

(COMPOSITE SEL)

NJM2595M

IC301

OSD

IC302

NJM2243M

(VIDEO/OSD SEL)

IC851

(PDC132A)

P

VIDEO ASSY

O

HEAD PHONE ASSY

C

POWER
PACK ASSY

SSY

5

6 7 8

A

B

C

D

E

VSX-918V-K

5

6 7 8

F

23

1

Block Diagram (DSP portion)

DIR

AK4114VQ

IC101

CODEC

AK4626AVQ

SDTO
LRCK,BCLK OUT

DSP

DSPC56371AF180

LRCK,BCLK IN
SDTI
MCLK

SDTI

SW

TC7WH125

SERIAL ROM

5 3

LEVEL

SHIFTER

3 5

LEVEL

SHIFTER

XMDT

BU9450KV

I2S

Lip Sync

ML87V5002

TC74VHC08

(1/4, 2/4)

TC74VHC08
(3/4)

TC74VHC08
(4/4) (ODD)

except KUXJ

AWX8977
AWX8979
AWX9164

Telechips

USB

Block

SPDIF

(RX6)

Analog 6ch OUT

COAX in(1)

SPDIF in(2)

SPDIF

VSX-918V only
AWX9162,AWX8977

Analog 2ch in

24.576MHz

24.576MHz

Control in

Control out

PQ1LAX95MSPQ PQ1LAX95MSPQ

1.25V 3.3V D5V

A5V

TC7WHU04

XM in

HDMI
Block

SW

TC74VHC157

SW

TC74VHC157

/KUXJ only
AWX9162,AWX9163

VSX-818V only

AWX8979
AWX9163
AWX9164

AWX8977
AWX9162
AWX9164

only

AWX8979
AWX9163

only

PDC172A8

1M

VSX-818V only

AWX9163
AWX9164
AWX8979

PDC173A8

4M

VSX-918V only

AWX9162
AWX8977

IC301

IC261

IC191

IC201

IC251

IC331

IC341, IC351

IC121

IC161 IC171

JA121

IC202

IC191

IC191

IC271

X261

IC2

IC3

B

V

HDMI&DSP&USB ASSY
(VSX-918V:AWX9162)

DSP&USB ASSY
(VSX-818V : AWX9163)

4.5 DSP BLOCK DIAGRAM

A

2 3 4

B

C

D

E

F

24

1

VSX-918V-K

2 3 4

5

VSX-918V HDMI&DSP&USB ASSY
HDMI Block Diagram

IC632

IC631

EDID

IC651

HDMI RECEIVER

DDC

TMDS

HPD

IC701

HDMI TRANSMITTER

HSYNC, VSYNC, DE

DCK

D[0-23]

MCLK
SCK
WS

IC861

FLASH ROM

IC801

HDMI ucom

CSCL
CSDA

JA601

JA602

JA701

HDMI IN1

HDMI IN2

HDMI OUT

Main ucom I/F

28.322 MHz

LDO

DC
/DC

LDO

5V

3.3V

1.8V

IC91

IC61

IC71

7V

5V

DDC

TMDS

HPD

IC611

HDMI CABLE
EQ SW

DDC

TMDS

HPD

DDC

TMDS

SEL

SD[0-3]
SPDIF

to DSP part

HPD_SINK

LDO

3.3V

IC891

IC101

CXB1444R

HDMI SW

DDC

HPD

TMDS

JA101

JA102

JA301

CN1001

HDMI IN1

HDMI IN2

HDMI OUT

Main ucom I/F

VSX-818V HDMI ASSY(Pass through SW) Block Diagram

IC102

TC7MB
3253FK

DDC SW

CN1002

SELB

HPD_IN

HPD_S

SELA

Power Supply

DDC

HPD

TMDS

HPD

TMDS

DDC

CE

DDC SW

5V

7V

LDO

LDO

5V

3.3V

IC901

IC911

HDMI&DSP&USB ASSY
(VSX-918V)

HDMI ASSY
(VSX-818V)

V

W

4.6 HDMI BLOCK DIAGRAM

6 7 8

A

B

C

D

E

VSX-918V-K

5

6 7 8

F

25

1

CN401

CN2

BUS Power cnt.

CTL

USB POWER

XFLAG

Protection flag

CN3

IC461

64M

SDRAM

IC401

USB Host

TCC8600

IC481

Apple

Certification IC

X’tal

12 MHz

D+

CP_RDY

S/PDIF

XRST

XRST

USB_DAI

USB_DAO

DSP part

V3.3D

V5USB

V5 Receiver

+5V

V+3DU

D-

CP_DATA

CP_CK

V1.8D

I/O

Internal Core

IC462

16M

FLASH ROM

V+3DU

IC471
LOAD

SW IC

System

Control

CPU

IC402

1.8V REG

V+1R8U

5 -> 3

R455, R456

USB_DAI

5 -> 3

TC74VHC08FTS

USB_DAO

3 -> 5

TC74VHCT541AFTS

V+3DU

V5DU

V3D (DSP)

Q401

IC331

IC351

X’tal

32.768 KHz

Block Diagram (USB portion)

B
V

HDMI&DSP&USB ASSY
(VSX-918V:AWX9162)

DSP&USB ASSY
(VSX-818V : AWX9163)

4.7 USB (iPod) BLOCK DIAGRAM

A

B

2 3 4

C

D

E

F

26

1

2 3 4

VSX-918V-K

5

• When a sound is not out in the multi-CH signal playback mode or surround mode with the COAX, OPT, USB or HDMI input.
(SurroundBack is not output by setting.)

• Suppose CR to be normal contact and that is not damaged.

• This shows failure analysis of DSP Block.

Step 4: 3 V to 5 V conversion

Step 1: MUTE pin

IC351

Do

convert 3 V into

5 V for input?

Replace IC201.

Replace IC1.

Replace IC2.

To Step 2

To Step 4

To Step 5

Step 0: Preliminary confirmation

Confirm the following items before checking

Do screws

of COAX Jack

securely tighten

?

Tighten screws securely.

No

Ye s

To Step 1

IC201 (Pin 54)

Is the

voltage of output

signal 0 V

?

No

Replace IC351.

No

Ye s

MUTE

Troubleshooting for all destination

[1] DSP TROUBLESHOOTING

Step 3: Regulator IC

Check the IC1 and
REGULATOR Assy.

IC1 (Pin 4)

Is the

voltage of around

5 V to 5.3 V

input?

No

Ye s

(to chassis)

IC2 (Pin 5)

Is the

voltage of 1.25 V

output?

No

(to chassis)

IC1 (Pin 5)

Is the

voltage of 3.3 V

output?

No

Ye s

Ye s

Ye s

IC341

Do

convert 3 V into

5 V for input?

Replace IC341.

No

Ye s

(to chassis)

Part shape and Pin arrangement
of IC1 and IC2

Step 2: BtoB connector and FFC

CN1, CN2

Are the

connectors securely

inserted?

Turn the power off and
insert the connectors
securely.

No

Ye s

CN3

Is the

FFC securely

inserted?

Turn the power off and
insert the connectors
securely.

No

Ye s

To Step 3

BtoB connector

FFC

6 7 8

5. DIAGNOSIS

5.1 DIAGNOSIS FLOWCHART

A

B

C

D

E

F

VSX-918V-K

5

6 7 8

27

1

Step 7-1: DIR

Step 7

A

To Step 6

Check the parts and patterns
in the path.

Check the USB Block, and the parts
and patterns in the path.

Replace IC101.

Replace IC101.

IC331

Do

convert 5 V into

3 V for input?

Replace IC331.

No

Ye s

Check the DIGITAL INPUT Assy,
and parts and patterns in the path.

Check the path to pin 45 of IC201.
Replace IC201.

IC101 (Pins 1, 3)

OPTICAL

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

When the COAX, OPT or USB is input, go to Step 7-1.
When the HDMI is input, go to Step 7-2.

Can
observe the
digital signal

?

No

(0 V ⇔ 4 V)

Ye s

IC101 (Pin 42)

COAX

Can
observe the
digital signal

?

No

Ye s

Ye s

Check that the data and clock signals are output.

Check that it changes in the Playback and Pause modes of
the USB (iPod).

(0 V ⇔ 3.3 V)

(0 V ⇔ 3.3 V)

(0 V ⇔ 3.3 V)

Ye s

IC101 (Pin 5)

From USB Block

Can
observe the
digital signal

?

No

(1.65 V center, amplitude more than 0.2 Vp-p)

Check the other assy.
(surrounding of the
microcomputer)

IC101 (Pin 27)

DIRM (Master clock)

No

No

Ye s

Is there

a master clock

output?

IC101 (Pin 24)

DIRL (LR clock)

No

Is there

a LR clock

output?

Replace IC101.

(0 V ⇔ 3.3 V)

Ye s

IC101 (Pin 25)

DIRD (Data)

No

Is there

a data

output?

Is the

voltage of PDN

IC101-pin 31

5 V?

No

Step 6: X'tal

To Step 7

Replace IC261 or X261.

Ye s

IC261 (Pin 2)

No

Is there

a 24.576 MHz

output?

Check the path to pin 30 of IC101.
Replace IC101.

Ye s

IC261 (Pin 7)

No

Is there

a 24.576 MHz

output?

Ye s

IC261 (Pin 5)

No

Is there

a 24.576 MHz

output?

Step 5: 5 V to 3 V conversion

A

2 3 4

B

C

D

E

F

28

1

2 3 4

VSX-918V-K

5

To Step 7-2 (AWX9162)
To Step 8 (AWX9163)

Replace IC101.

Ye s

IC101 (Pin 26)

DIRB (Bit clock)

No

Is there

a bit clock

output?

(0 V ⇔ 3.3 V)

Ye s

IC161 (Pin 4)

S1DT (data)

Is there

a data

output?

(0 V ⇔ 3.3 V)

Ye s

IC161 (Pin 7)

S1BC (Bit clock)

Is there

a bit clock

output?

(0 V ⇔ 3.3 V)

Ye s

IC161 (Pin 12)

S1LR (LR clock)

Is there

a LR clock

output?

(0 V ⇔ 3.3 V)

Ye s

IC161 (Pin 9)

S1MC (Master clock)

Is there

a master clock

output?

(0 V ⇔ 3.3 V)

Replace IC161.

Check the path
between IC161-pin 1
and microcomputer.

No

No

No

No

No

Is the

voltage of

IC161-pin 1

0 V?

Ye s

To Step 8

Ye s

IC171 (Pin 4)

S2DT (data)

Is there

a data

output?

(0 V ⇔ 3.3 V)

Ye s

IC171 (Pin 7)

S2BC (Bit clock)

Is there

a bit clock

output?

(0 V ⇔ 3.3 V)

Ye s

IC171 (Pin 12)

S2LR (LR clock)

Is there

a LR clock

output?

(0 V ⇔ 3.3 V)

Ye s

IC171 (Pin 9)

S2MC (Master clock)

Is there

a master clock

output?

(0 V ⇔ 3.3 V)

Replace IC171.

At COAX, OPT or USB input

Check the path
between IC171-pin 1
and microcomputer.

No

No

No

No

No

Is the

voltage of

IC171-pin 1

0 V?

Ye s

Replace IC171.

At HDMI input

Check the path
between IC171-pin 1
and microcomputer.

No

Is the

voltage of

IC171-pin 1

5 V?

Ye s

Step 7-2 (AWX9162 only)

Switch

Check that the data and clock signals are output.

A

6 7 8

A

B

C

D

E

F

VSX-918V-K

5

6 7 8

29

1

Step 8: DSP output (digital)

Ye s

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

Replace IC201.

IC201 (Pin 6)

Surround L/R data

No

Is the output

0 V fixing?

Ye s

Replace IC201.

IC201 (Pin 7)

Front L/R data

No

Is the output

0 V fixing?

Replace IC201.

Ye s

IC201 (Pin 5)

Center/LFE data

No

Is the output

0 V fixing?

Replace IC201.

Ye s

IC201 (Pin 5)

Center/LFE data

No

Is there

a data output?

Replace IC201.

Ye s

IC201 (Pin 6)

Surround L/R data

No

Is there

a data output?

Replace IC201.

Ye s

IC201 (Pin 7)

Front L/R data

No

Is there

a data output?

(0 V ⇔ 3.3 V)

(0 V ⇔ 3.3 V)

(0 V ⇔ 3.3 V)

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

To Step 9 (AWX9162)
To Step 10 (AWX9163)

Step 9: LIPSYNC output (Digital) (AWX9162 only)

To Step 10

Is there

a data output?

Check that the data and clock signals are output.

Replace IC271.

Ye s

IC271 (Pin 31)

LSLK (LR clock)

No

Replace IC271.

Ye s

Ye s

IC271 (Pin 30)

LSBK (Bit clock)

No

Is there

a bit clock

output?

Replace IC271.

IC271 (Pin 29)

Front L/R data

No

Is there

a LR clock

output?

(0 V ⇔ 3.3 V)

(0 V ⇔ 3.3 V)

(0 V ⇔ 3.3 V)

Is there

a data output?

Ye s

Replace IC271.

IC271 (Pin 28)

Surround L/R data

No

(0 V ⇔ 3.3 V)

Is there

a data output?

Ye s

Replace IC271.

IC271 (Pin 27)

Center/LFE data

No

(0 V ⇔ 3.3 V)

A

2 3 4

B

C

D

E

F

30

1

VSX-918V-K

2 3 4