Pioneer VSX-LX53 User manual

ORDER NO.
PIONEER CORPORATION 1-1, Shin-ogura, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0031, 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
2010
2010 Printed in Japan
MASTER
VOLUME
INPUT
SELECTOR
STANDBY/ON
VSX-LX53
PHONES
SLQPENUTDNAB
AUTOSURR/ALC/
STREAMDIRECT
ADVANCED
SURROUND
STANDARD
SURROUND
MCACCSETUP MIC
STEREO SPEAKERSHOMETHX
USB
CONTROL
MULTI-ZONE
ON/OFF
ADVANCED
MCACC
iPod
iPhone TIDERENUTTESERPIMDH
ENTER
iPod
iPhone
VIDEO CAMERA
HDMI5
VSX-LX53
RRV4133
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-LX53
VSX-2020-K
THISMANUAL ISAPPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
This service manual should be used together with the following manual(s).
Model Type Power Requirement Remarks
VSX-LX53 SYXJ5 AC 220 V to 230 V
VSX-2020-K SYXJ5 AC 220 V to 230 V
Model No. Order No. Remarks
VSX-LX53
VSX-2020-K
RRV4134 PCB RETRIEVAL DIAGRAM
For details, refer to "Important Check Points for good servicing".
K-FZV JUNE
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

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[Important Check Points for Good Servicing]
In this manual, procedures that must be performed during repairs are marked with the below symbol.
Please be sure to confirm and follow these procedures.
1. Product safety
Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by
following the safety instructions described in this manual.
1 Use specified parts for repair.
Use genuine parts. Be sure to use important parts for safety.
2 Do not perform modifications without proper instructions.
Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as
radio/TV interference and foreign noise.
3 Make sure the soldering of repaired locations is properly performed.
When you solder while repairing, please be sure that there are no cold solder and other debris.
Soldering should be finished with the proper quantity. (Refer to the example)
4 Make sure the screws are tightly fastened.
Please be sure that all screws are fastened, and that there are no loose screws.
5 Make sure each connectors are correctly inserted.
Please be sure that all connectors are inserted, and that there are no imperfect insertion.
6 Make sure the wiring cables are set to their original state.
Please replace the wiring and cables to the original state after repairs.
In addition, be sure that there are no pinched wires, etc.
7 Make sure screws and soldering scraps do not remain inside the product.
Please check that neither solder debris nor screws remain inside the product.
8 There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.
Damaged power cords may lead to fire accidents, so please be sure that there are no damages.
If you find a damaged power cord, please exchange it with a suitable one.
9 There should be no spark traces or similar marks on the power plug.
When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure
connections and suitable usage. Please exchange the power cord if necessary.
aSafe environment should be secured during servicing.
When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries.
Please pay attention to your surroundings and repair safely.
2. Adjustments
To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification.
Adjustments should be performed in accordance with the procedures/instructions described in this manual.
4. Cleaning
For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper
cleaning should be performed to restore their performances.
3. Lubricants, Glues, and Replacement parts
Use grease and adhesives that are equal to the specified substance.
Make sure the proper amount is applied.
5. Shipping mode and Shipping screws
To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be
installed before shipment. Please be sure to follow this method especially if it is specified in this manual.
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CONTENTS
1. SERVICE PRECAUTIONS.................................................................................................................................................... 5
1.1 NOTES ON SOLDERING ............................................................................................................................................... 5
1.2 NOTES ON REPLACING ............................................................................................................................................... 5
1.3 CAUTION........................................................................................................................................................................ 5
2. SPECIFICATIONS................................................................................................................................................................. 6
2.1 SPECIFICATIONS .......................................................................................................................................................... 6
2.2 PANEL FACILITIES......................................................................................................................................................... 7
3. BASIC ITEMS FOR SERVICE ............................................................................................................................................ 11
3.1 CHECK POINTS AFTER SERVICING ......................................................................................................................... 11
3.2 PCB LOCATIONS ......................................................................................................................................................... 12
3.3 JIGS LIST ..................................................................................................................................................................... 13
4. BLOCK DIAGRAM .............................................................................................................................................................. 14
4.1 OVERALL WIRING DIAGRAM ..................................................................................................................................... 14
4.2 BLOCK DIAGRAM FOR AUDIO BLOCK...................................................................................................................... 16
4.3 BLOCK DIAGRAM FOR DIGITAL MAIN VIDEO BLOCK ............................................................................................. 18
4.4 BLOCK DIAGRAM FOR COMPOSITE VIDEO BLOCK ............................................................................................... 19
4.5 BLOCK DIAGRAM FOR COMPONENT VIDEO BLOCK.............................................................................................. 20
4.6 BLOCK DIAGRAM FOR POWER BLOCK(1) ............................................................................................................... 22
4.7 BLOCK DIAGRAM FOR POWER BLOCK(2) ............................................................................................................... 24
5. DIAGNOSIS ........................................................................................................................................................................ 26
5.1 DIAGNOSIS FLOWCHART .......................................................................................................................................... 26
5.2 CIRCUIT DESCRIPTION.............................................................................................................................................. 49
6. SERVICE MODE................................................................................................................................................................. 55
6.1 TEST MODE................................................................................................................................................................. 55
7. DISASSEMBLY ................................................................................................................................................................... 57
7.1 DISASSEMBLY............................................................................................................................................................. 57
8. EACH SETTING AND ADJUSTMENT ................................................................................................................................ 73
8.1 HOW TO SAVE AND LOAD THE SETTINGS USING BACKUP FUNCTION WITH USB MEMORY ........................... 73
8.2 HOW TO UPDATE FIRMWARE.................................................................................................................................... 74
9. EXPLODED VIEWS AND PARTS LIST............................................................................................................................... 78
9.1 PACKING SECTION ..................................................................................................................................................... 78
9.2 EXTERIOR SECTION .................................................................................................................................................. 80
9.3 REAR SECTION........................................................................................................................................................... 82
9.4 FRONT SECTION ........................................................................................................................................................ 84
10. SCHEMATIC DIAGRAM.................................................................................................................................................... 86
10.1 AUDIO ASSY(1/3)(GUIDE PAGE) .............................................................................................................................. 86
10.2 AUDIO ASSY(2/3)....................................................................................................................................................... 92
10.3 AUDIO ASSY(3/3)....................................................................................................................................................... 94
10.4 COMPOSITE ASSY.................................................................................................................................................... 96
10.5 DAC LOW ASSY(1/2) ................................................................................................................................................. 98
10.6 DAC LOW ASSY(2/2) ............................................................................................................................................... 100
10.7 COMPONENT ASSY................................................................................................................................................ 102
10.8 DIGITAL MAIN ASSY(1/10)(GUIDE PAGE).............................................................................................................. 104
10.9 DIGITAL MAIN ASSY(2/10) ...................................................................................................................................... 110
10.10 DIGITAL MAIN ASSY(3/10) .................................................................................................................................... 112
10.11 DIGITAL MAIN ASSY(4/10) .................................................................................................................................... 114
10.12 DIGITAL MAIN ASSY(5/10) .................................................................................................................................... 116
10.13 DIGITAL MAIN ASSY(6/10) .................................................................................................................................... 118
10.14 DIGITAL MAIN ASSY(7/10) .................................................................................................................................... 120
10.15 DIGITAL MAIN ASSY(8/10) .................................................................................................................................... 122
10.16 DIGITAL MAIN ASSY(9/10) .................................................................................................................................... 124
10.17 DIGITAL MAIN ASSY(10/10) .................................................................................................................................. 126
10.18 FRONT MIC&VIDEO ASSY.................................................................................................................................... 128
10.19 FRONT HDMI USB ASSY ...................................................................................................................................... 130
10.20 POWER AMP ASSY(1/2)........................................................................................................................................ 132
10.21 POWER AMP ASSY(2/2)........................................................................................................................................ 134
10.22 PRESTAGE ASSY .................................................................................................................................................. 136
10.23 DISPLAY ASSY ...................................................................................................................................................... 138
10.24 PRIMARY ASSY ..................................................................................................................................................... 140
10.25 USB REGULATOR ASSY ....................................................................................................................................... 142
10.26 XM REGULATOR ASSY ......................................................................................................................................... 144
10.27 REGULATOR ASSY ............................................................................................................................................... 146
10.28 POWER SW, ENCODER and HEADPHONE ASSYS ............................................................................................ 148
10.29 CONNECT and A-DAC BRIDGE ASSYS ............................................................................................................... 149
10.30 D-AUDIO BRIDGE ASSY ....................................................................................................................................... 150
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10.31 D-DAC BRIDGE ASSY............................................................................................................................................151
10.32 POS 1-3 ASSYS .....................................................................................................................................................152
10.33 BIND L FRONT and BACK, BINDER, BIND DM CABLE, BIND R BACK and FRONT, BIND DISP FFC ASSYS ..153
11. PCB CONNECTION DIAGRAM ......................................................................................................................................154
11.1 AUDIO ASSY ............................................................................................................................................................154
11.2 COMPOSITE ASSY ..................................................................................................................................................158
11.3 DAC LOW ASSY .......................................................................................................................................................160
11.4 COMPONENT ASSY ................................................................................................................................................162
11.5 DIGITAL MAIN ASSY ................................................................................................................................................164
11.6 FRONT MIC&VIDEO and FRONT HDMI USB ASSYS.............................................................................................168
11.7 POWER AMP ASSY .................................................................................................................................................170
11.8 PRESTAGE ASSY.....................................................................................................................................................174
11.9 DISPLAY ASSY.........................................................................................................................................................178
11.10 PRIMARY ASSY .....................................................................................................................................................182
11.11 USB REGULATOR and XM REGULATOR ASSYS.................................................................................................184
11.12 REGULATOR ASSY................................................................................................................................................186
11.13 POWER SW, ENCODER and HEADPHONE ASSYS ............................................................................................190
11.14 CONNECT and A-DAC BRIDGE ASSYS................................................................................................................192
11.15 D-AUDIO and D-DAC BRIDGE, POS 1-3 and BIND L FRONT ASSYS..................................................................194
11.16 BIND L BACK, BINDER, BIND DM CABLE, BIND R BACK/FRONT, BIND DISP FFC and BLUETOOH ASSYS..196
12. PCB PARTS LIST ............................................................................................................................................................198
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http://www.xiaoyu163.com

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1. SERVICE PRECAUTIONS
1.1 NOTESON SOLDERING
1.2 NOTESON REPLACING
1.3CAUTION
• 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 asoldering 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 asoldering iron must be set to around 373oC 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 asoldering 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.
GYP10080.3in dia.
The part listed below is difficult to replace as adiscrete component part.
When the part listed in the table is defective, replace whole Assy.
Partsthat isDiffcult to Replase
ASSY NAME PCB ASSY Part No. Ref No. FUNCTION Part No. Remarks
IC101 MAIN CPU UPD61283F1-407LU2A BGA
IC904 HDMI Receiver SII9233ACTU IC with heat-pad
IC1204 Digital Video Format
Converter 88DE2750 BGA
IC1212 DDR2 SDRAM EDE5116AJBG-8E-E BGA
IC9506 Ethernet IC LAN9211-ABZJ IC with heat-pad
IC9804 Regulator NJM2846DL3-18IC with heat-pad
IC9810 Regulator MM1701WH IC with heat-pad
DIGITAL MAIN
ASSY AWX9719
IC9811 Regulator NJM2846DL3-33 IC with heat-pad
• Discharging
Please refer to page 57, “Preparations Before Perfoming Diagnosis of the POWER AMP Assy”.
• Ground Points
Please refer to page 58, “Ground Points”.
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2. SPECIFICATIONS
2.1 SPECIFICATIONS
• These specifications are applicable when the power
supply is 230 V.
Audio section
Rated power output (1 kHz, 6 , 1 %)
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 W + 150 W
Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 W
Surround . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 W + 150 W
Surround back (Front height/wide). . . . . . 150 W + 150 W
Rated power output (20 Hz to 20 kHz, 8 , 0.08 %)
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 W + 110 W
Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 W
Surround . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 W + 110 W
Surround back (Front height/wide). . . . . . 110 W + 110 W
Total Harmonic Distortion . . . . . . . . . . . . . . . . . . . . . . .0.06 %
(20 Hz to 20 kHz, 8 , 100 W + 100 W)
Guaranteed speaker impedance
. . . . . . . . 16 to 8 , less than 8 to 6 (setting required)
Signal-to-Noise Ratio (IHF, short circuited, A network)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103 dB
Frequency Response . . . . . . . . . . 5 Hz to 100 000 Hz dB
(Pure Direct Mode)
Input (Sensitivity/Impedance) . . . . . . . . . . . .350 mV/47 k
Output (Level/Impedance)
REC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350 mV/2.2 k
Tuner Section
Frequency Range (FM). . . . . . . . . . . .87.5 MHz to 108 MHz
Antenna Input (FM) . . . . . . . . . . . . . . . . . . 75 unbalanced
Frequency Range (AM) . . . . . . . . . . .531 kHz to 1602 kHz
Antenna (AM) . . . . . . . . . . . . . . . Loop antenna (balanced)
Video Section
Signal level
Composite Video . . . . . . . . . . . . . . . . . . . ..1 Vp-p (75 )
Component Video. . . . . . . . . . . . . . . . .Y: 1.0 Vp-p (75 ),
PB, PR: 0.7 Vp-p (75 )
Corresponding maximum resolution
Component Video. . . . . . . . . . . . . . . . . . .1080p (1125p)
(Video convert off)
Digital In/Out Section
HDMI terminal . . . . . . . . . . . . . . . . . . . . . 19-pin (Not DVI)
HDMI output type . . . . . . . . . . . . . . . . . . . . . . .5 V, 100 mA
USB terminal . . . . . . . . . . . . . USB2.0 Full Speed (Type A)
iPod terminal . . . . . . . . . . . . USB, and Video (Composite)
ADAPTER PORT terminal . . . . . . . . . . . . . . . . .5 V, 100 mA
Integrated control section
Control (SR) terminal . . . . . . . . . . . Ø 3.5 Mini-jack (MONO)
Control (IR) terminal. . . . . . . . . . . . Ø
3.5 Mini-jack (MONO)
IR signal . . . . . . . . . . . . . . . High Active (High Level: 2.0 V)
12 V Trigger terminal . . . . . . . . . . Ø
3.5 Mini-jack (MONO)
12 V Trigger output type. . . . . . . . . . . . 12 V, Total 150 mA
RS-232C cable type. . . . . 9-pin, cross type, female-female
EXTENSION terminal . . . . . . . . . . . . . . . . . . . . .5 V, 150 mA
Network Section
LAN terminal . . . . . . . . . . . . . . . . .10 BASE-T/100 BASE-TX
Bluetooth ADAPTER (AS-BT100) (VSX-LX53 only)
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC 5 V
Version. . . . . . . . . . Bluetooth Specification Ver. 2.0 + EDR
Output. . . . . . . . . . . . . . . . . Bluetooth Specification Class 2
Estimated line-of-sight transmission distance*
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . About 10 m
Frequency range . . . . . . . . . . . . . . . . . . . . . . . . . . .2.4 GHz
Modulation
. . . . . . . . .FH-SS (Frequency Hopping Spread Spectrum)
Supported Bluetooth profiles. . . . . . . . . . . . A2DP, AVRCP
Supported Codec. . . . . . . . . . . . . . SBC (Subband Codec)
Supported contents protection . . . . . . . . . . . . . . . SCMS-T
External dimensions
. . . . . . . . . . . . . . . 30.5 mm (W) x 9.0 mm (H) x 50 mm (D)
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . About 11 g
*The line-of-sight transmission distance is an estimate.
Actual transmission distances supported may differ
depending on surrounding conditions.
Miscellaneous
Power requirements . . . . . AC 220 V to 230 V, 50 Hz/60 Hz
Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . 410 W
In standby . . . . . . . . 0.2 W (HDMI Setup–Control: O F F )
0.3 W (HDMI Setup–Control : ON)
Dimensions . . . . . 420 (W) mm x 173 (H) mm x 433 (D) mm
Weight (without package)
VSX-LX53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.4 kg
VSX-2020-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.1 kg
Number of Furnished Parts
MCACC Setup microphone (APM7009) . . . . . . . . . . . . . . 1
Remote control unit (AXD7592) . . . . . . . . . . . . . . . . . . . . . 1
AAA size IEC R03 dry cell batteries . . . . . . . . . . . . . . . . .
2
iPod cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
AM loop antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
FM wire antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Bluetooth
ADAPTER (AS-BT100) (VSX-LX53 only) . . . . . 1
Power cord. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Warranty card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Quick start guide
Operating instructions
Note
• Specifications and the design are subject to possible
modifications without notice, due to improvements.
Manufactured under license from Dolby Laboratories.
Dolby, Pro Logic, Surround EX and the double-D symbol are
trademarks of Dolby Laboratories.
Manufactured under license under U.S. Patent #’s:
5,451,942; 5,956,674; 5,974,380; 5,978,762; 6,226,616;
6,487,535; 7,212,872; 7,333,929; 7,392,195; 7,272,567 &
other U.S. and worldwide patents issued & pending. DTS
and the Symbol are registered trademarks, & DTS-HD, DTS-
HD Master Audio, and the DTS logos are trademarks of
DTS, Inc. Product includes software. © DTS, Inc. All Rights
Reserved.
Windows Media and the Windows logo are trademarks or
registered trademarks of Microsoft Corporation in the
United States and/or other countries.
THX, the THX logo and Select2 Plus are trademarks of
THX Ltd. which may be registered in some jurisdictions.
All rights reserved. All other trademarks are the property of
their respective owners.
iPod is a trademark of Apple Inc., registered in the U.S. and
other countries. iPhone is a trademark of Apple Inc.
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2.2 PANEL FACILITIES
1 INPUT SELECTOR dial
Use to select an input function.
2 STANDBY/ON
Switches the receiver between on and standby.
3 Tuner controls
BAND– Switches between the AM and FM radio
bands.
TUNE – Use to find radio frequencies.
PRESET – Use to find preset stations.
TUNER EDIT –
Use with TUNE  , PRESET 
and ENTER to memorize and name stations for recall.
MASTER
VOLUME
INPUT
SELECTOR
STANDBY/ON
VSX-LX53
PHONES
SLQPENUTDNAB
AUTO SURR /ALC/
STREAM DIRECT ADVANCED SURROUND STANDARD SURROUND
MCACC SETUP MIC
STEREO SPEAKERSHOME THX
USB
CONTROL
MULTI-ZONE
ON/OFF
ADVANCED
MCACC iPod iPhone TIDERENUTTESERPIMDH
ENTER
iPod
iPhone
VIDEO CAMERA
HDMI 5
12 345
410191211 13 15
786
4 Indicators
ADVANCED MCACC – Lights when EQ is set to ON in
the
AUDIO PARAMETER
menu.
PQLS – Lights when the PQLS feature is active.
HDMI
– Blinks when connecting an HDMI-equipped
component; lights when the component is connected.
iPod/iPhone – Lights to indicate iPod/iPhone is
connected.
5 Character display
6
ENTER
7 Remote sensor
Receives the signals from the remote control.
8 MASTER VOLUME dial
9
PHONES jack
Use to connect headphones. When the headphones are
connected, there is no sound output from the speakers.
10 Listening mode buttons
AUTO SURR/ALC/ STREAM DIRECT – Switches
between Auto Surround, Auto Level Control mode and
Stream Direct mode.
STEREO – Switches between stereo playback and
Front Stage Surround Advance modes.
ADVANCED SURROUND – Use to switch between
the various surround modes.
STANDARD SURROUND – Press for Standard
decoding and to switch various modes ( Pro Logic,
Neo:6, etc.).
HOME THX – Press to select a Home THX listening
mode.
11 SPEAKERS
Use to change the speaker terminal.
12 MULTI-ZONE controls
If you’ve made MULTI-ZONE connections use these
controls to control the sub zone from the main zone.
13 MCACC SETUP MIC jack
Use to connect the supplied microphone.
14 iPod/iPhone/USB terminals
Use to connect your Apple iPod as an audio and video
source, or connect a USB device for audio and photo
playback.
15 HDMI input connector
Use for connection to a compatible HDMI device (Video
camera, etc.).
[1] Front Panel
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1 5 1 5
0 9 9
2
8 9
4 2
9 8
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

8VSX-LX53
12 3 4
A
B
C
D
E
F
12 3 4
1 SIGNAL indicators
Light to indicate the currently selected input signal.
AUTO lights when the receiver is set to select the input
signal automatically.
2 Program format indicators
Light to indicate the channelsto which digital signals are
being input.
L/R – Left front/Right front channel
C– Center channel
SL/SR– Left surround/Right surround channel
LFE– Low frequency effects channel (the (( )) indicators light
when an LFE signal is being input)
XL/XR – Two channels other than the ones above
XC – Either one channel other than the ones above, the mono
surround channel or matrix encode flag
3 Digital format indicators
Light when a signal encodedin the corresponding format
is detected.
DIGITAL– Lights with Dolby Digital decoding.
DIGITAL PLUS – Lights with Dolby Digital Plus
decoding.
TrueHD – Lights with Dolby TrueHD decoding.
DTS– Lights with DTS decoding.
DTS HD– Lights with DTS-HD decoding.
96/24 – Lights with DTS 96/24 decoding.
WMA9 Pro – Lights to indicate that a WMA9 Pro
signal is being decoded.
DSD PCM– Light during DSD (Direct Stream Digital)
to PCM conversion with SACDs.
PCM – Lights during playback of PCM signals.
MSTR– Lights during playback of DTS-HD Master
Audio signals.
4 MULTI-ZONE
Lights when the MULTI-ZONE feature is active.
5 SOUND
Lights when any of the Midnight, Loudness or tone
controls features is selected.
Lights when Dialog Enhancement is switched on.
6 S.RTRV
Lights when the Sound Retriever function is active.
7 Listening mode indicators
AUTO SURROUND – Lights when the Auto Surround
feature is switched on.
ALC – Lights when the ALC (Auto level control) mode
is selected.
STREAM DIRECT – Lights when Direct/Pure Direct is
selected.
ADV.SURROUND – Lights when one of the
Advanced Surround modes has been selected.
STEREO – Lights when stereo listening is switched
on.
STANDARD – Lights when one of the Standard
Surround modes is switched on.
THX – Lights when one of the Home THX modes is
selected.
8 ( PHASE CONTROL )
Lights when Phase Control is switched on.
9 Analog signal indicators
Light to indicate reducing the level of an analog signal.
10 Tuner indicators
TUNED – Lights when a broadcast is being received.
STEREO –
Lights when a stereo FM broadcast is being
received in auto stereo mode.
MONO – Lights when the mono mode is set using
MPX.
RDS– Lights when an RDS broadcast is received.
11
Lights when the sound is muted.
12 Master volume level
Shows the overall volume level.
“---” indicates the minimum level, and “+12dB ” indicates
the maximum level.
13 Input function indicators
Light to indicate the input function you have selected.
14 Scroll indicators
Light when there are more selectable items when making
the various settings.
15 Speaker indicators
Lights to indicate the current speaker system,Aand/or B.
16 SLEEP
Lights when the receiver is in sleep mode.
17 Matrix decoding format indicators
PRO LOGIC IIx – This lights to indicate Pro
Logic II / Pro Logic IIx decoding.
Neo:6 –
When one of the Neo:6 modes of the receiver
is on, this lights to indicate Neo:6 processing.
18 Character display
Displays various system information.
19 Remote control mode indicator
Lights to indicate the receiver’s remote control mode
setting. (Not displayed when set to .)1
[2] Display
21 3 9754 10811 12 13
19
81
15 16 17
14
7
6
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

9
VSX-LX53
56 7 8
56 7 8
A
B
C
D
E
F
RS-232C
HDMI
SPEAKERS
ASSIGNABLE
COAXIAL
ASSIGNABLE
COMPONENT VIDEO
ASSIGNABLE
OPTICAL
ASSIGNABLE
MONITOR
OUT
IN
Y
P
R
Y
CD-R/TAPE
ANTENNA
FM UNBAL 75AM LOOP
AC IN
IN
CD
VIDEO
MONITOR
AUDIO
IN
OUT
OUT
ZONE2
OUT
ZONE3
OUT
DVD
IN
TV/SAT
IN
VIDEO
IN
DVR/BDR
OUT IN
P
B
P
R
P
B
1
INBD
IN 1IN
2IN
3
OUT 1 (CONTROL)OUT 2
AB
LR)elgniS(LRLR SURROUND BACKSURROUNDCENTERFRONT
R
R
L
L
FRONT HEIGHT / FRONT WIDE/
1 4
(DVD)
IN 1
(DVD)
IN 1
(TV/SAT)
IN 2
(DVR/BDR)
IN OUT
FRONT CENTER SURROUND SURR BACK
(Single)
FH/FW
3
(VIDEO)
IN 2
(CD)
IN 2
(DVR/BDR)
CONTROL
EXTENSION IR
12 V TRIGGER
IN
IN IN
OUT
OUT12
1
2
(OUTPUT 12 V TOTAL 150 mA MAX)
SUBWOOFER
IN
4
LAN
(10/100)
(OUTPUT 5 V 100 mA MAX )
ADAPTER PORT
PRE OUT
(OUTPUT 5 V 150 mA MAX)
[3] Rear Panel
VSX-LX53
VSX-2020-K
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

10 VSX-LX53
12 3 4
A
B
C
D
E
F
12 3 4
The remote has been conveniently color-coded according
to component control using the following system:
•White – Receiver control, TV control
•Blue – Other controls
1 RECEIVER
This switches between standby and on for this receiver.
2 MULTI OPERATION – Use to perform multi operations.
R.SETUP – Use to input the preset code when making
remote control settings andto set the remote control
mode.
3 Input function buttons
Press to select control of other components.
UseINPUT SELECTto select the input function.
4 TV CTRL
Set the preset code of your TV’s manufacturer when
controlling the TV.
5 TV CONTROL buttons
These buttons are dedicated tocontrol the TV assigned to
the TV CTRL button.
6 Receiver settingbuttons
Press first to access:
AUDIO PARAMETER – Use to access the Audio
options.
VIDEO PARAMETER – Use to access the Video
options.
HOME MENU – Use to access the Home Menu.
RETURN – Press to confirm and exit the current
menu screen.
7  / ENTER
Use the arrow buttons when setting up your surround
sound system and the Audio or Video options.
8 Receiver Control buttons
Press first to access:
AUTO/ALC/DIRECT–
Switches between Auto
Surround, Auto Level Control mode and
Stream Direct mode.
STEREO – Switches between stereo playback and
Front Stage Surround Advance modes.
RECEIVER
ZONE 2 ZONE 3 LIGHT
AUTO
/
ALC
/
DIRECT
D.ACCESS
CH LEVEL A.A TT DIMMER
SIGNAL SEL MCACC SLEEP
HDMI OUT
TV
/
DTV MPX PQLS
PHASE CTRL STATUSTHX
PGM
STEREO
iPod CTRL
HOME
MENU
TUNE
TUNE
TOOLS LIST
CH
TV CONTROL
INPUT
INPUT SELECT TV CTRL
iPod USB TUNER VIDEO CD-R
ADAPTERNET RADIO CDTV
BD DVD
R.SETUP
SOURCERECEIVER
MULTI
OPERATION
DVR/BDR HDMI
RECEIVER
MUTE
MASTER
VOLUME
VOL
PRESET
TOP MENU
EDIUGDNAB T.ED IT
VIDEO
PARAMETER
AUDIO
PARAMETER
ENTER
PRESET
RETURN
PTY
SEARCH
MEMORY
STANDARD
MENU
ADV SURR
AUDIO
INFO
CLASS
ENTER
DISP
HDD DVD
546
8
0
79
213
/
CLR
CH
1
2
3
4
8
9
5
6
7
10
11
12
13
14
RECEIVER
RECEIVER
[4] Remote Conlrol
STANDARD – Press for Standard decoding and to
switch various modes ( Pro Logic, Neo:6, etc.).
ADV SURR– Use to switch between the various
surround modes.
THX – Press to select a Home THX listening mode.
PHASE CTRL – Press to switch on/off Phase Control.
STATUS – Press to check selected receiver settings.
PQLS – Press to select the PQLS setting.
HDMI OUT – Switch the HDMI output terminal.
SIGNAL SEL – Use to select an input signal.
MCACC – Press to switch between MCACC presets.
SLEEP – Use to put the receiver in sleep mode and
select the amount of time before sleep.
CH LEVEL – Press repeatedly to select a channel,
then use  to adjust the level.
A.ATT – Attenuates (lowers) the level of an analog
input signal to prevent distortion.
DIMMER – Dims or brightens the display.
9 MULTI-ZONE select buttons
Switch to perform operations in ZONE 2 and ZONE 3.
10 Remote control LED
Lights when a command is sent from the remote control.
11
Switches the remote to control the receiver (used to
select the white commands).
Switch to perform operations in the main zone.
Also use this button to set up surround sound.
12 MASTER VOLUME +/–
Use to set the listening volume.
13 MUTE
Mutes the sound or restoresthe sound if it has been
muted (adjusting the volume also restores the sound).
14
Press to turn on/off the illumination for the buttons. The
way the buttons light can be selected from four modes.
RECEIVER
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

11
VSX-LX53
56 7 8
56 7 8
A
B
C
D
E
F
3. BASIC ITEMSFOR SERVICE
3.1 CHECK POINTSAFTER SERVICING
Item to be checked regardingvideo Item to be checked regardingaudio
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. ProceduresCheck points
1
2
3
4
5
6
7
8
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.
Check the analog audio playback.
(Make the analog connections with aDVD player.)
Each channel audio and operations must be normal.
Check the digital audio playback.
(Make the digital connections with aDVD player.)
Each channel audio and operations must be normal.
Check surround playback.
(Select Surround mode and check the multichannel operations
viathe DSP circuit.)
Each channel audio and operations must be normal.
Check the tuner (AM and FM) operations. Audio and operations must be normal.
Check the video outputs.
(Connect with aDVD player.)
Video and operations must be normal.
Check the sound from headphone output. Sound must be normal, without noise.
Check the appearance of the product. No scratches or dirt on its appearance after receiving it for
service.
Itemsto 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.
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

12 VSX-LX53
12 3 4
A
B
C
D
E
F
12 3 4
3.2 PCB LOCATIONS
AUDIO ASSY
COMPONENT
ASSY
A
HPOWER AMP ASSY
EDIGITAL MAIN
ASSY
LUSB REGULATOR
ASSY
JDISPLAY ASSY
BINDER ASSY
AA
BIND R FRONT
ASSY
N
REGULATOR
ASSY
O
POWER SW
ASSY
P
ENCODER
ASSY
M
XM REGULATOR
ASSY
B
COMPOSITE
ASSY
F
FRONT MIC&VIDEO
ASSY
Q
HEADPHONE
ASSY
GFRONT HDMI USB ASSY
D
CDAC LOW ASSY
K
PRIMARY
ASSY
AD
BIND R BACK
ASSY
AC
VPOSI 1 ASSY
XPOSI 3ASSY
WPOSI 2 ASSY
AB
BIND DM
CABLE ASSY
U
D-DAC BRIDGE
ASSY
S
A-DAC BRIDGE
ASSY
ZBIND L BACK
ASSY
YBIND L FRONT
ASSY
TD-AUDIO BRIDGE
ASSY
IPRESTAGE ASSY
BIND DISP FFC
ASSY
AE
RCONNECT ASSY
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Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

13
VSX-LX53
56 7 8
56 7 8
A
B
C
D
E
F
3.3JIGSLIST
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.
Mark No. Description Part No.
LIST OF ASSEMBLIES
NSP 1..AMP ASSY AWM8192
2..BIND L FRONT ASSY AWX9574
2..POSI 1 ASSY AWX9576
2..POSI 2 ASSY AWX9577
2..POSI 3 ASSY AWX9578
2..POWER AMP ASSY AWX9660
2..BIND R BACK ASSY AWX9586
NSP 1..LOCAL POWER ASSY AWM8195
2..BIND DM CABLE SSY AWX9575
2..REGULAOTR ASSY AWX9579
2..PRESTAGE ASSY AWX9580
2..USB REGULATOR ASSY AWX9581
2..BIND L BACK ASSY AWX9585
2..XM REGULATOR ASSY AWX9667
2..BIND R FRONT ASSY AWX9584
2..BIND DISP FFC ASSY AWX9668
NSP 1..COMPLEX ASSY(VSX-LX53) AWM8197
2..POWER SW ASSY AWX9588
2..ENCODER ASSY AWX9589
2..HEADPHONE ASSY AWX9590
2..CONNECT ASSY AWX9592
2..FRONT MIC & VIDEO ASSY AWX9593
2..BINDER ASSY AWX9595
2..DISPLAY ASSY AWX9669
2..PRIMARY ASSY AWX9676
NSP 1..COMPLEX ASSY(VSX-2020-K) AWM8230
2..POWER SW ASSY AWX9588
2..ENCODER ASSY AWX9589
2..HEADPHONE ASSY AWX9590
2..CONNECT ASSY AWX9592
2..FRONT MIC & VIDEO ASSY AWX9593
2..BINDER ASSY AWX9595
2..DISPLAY ASSY AWX9726
2..PRIMARY ASSY AWX9676
NSP 1..AUDIO COMPOSITE ASSY AWR7087
2..COMPOSITE ASSY AWX9568
2..D-AUDIO BRIDGE ASSY AWX9569
2..D-DAC BRIDGE ASSY AWX9570
2..A-DAC BRIDGE ASSY AWX9571
2..AUDIO ASSY AWX9644
1..FRONT HDMI USB ASSY AWX9565
1..COMPONENT ASSY AWX9572
1..DAC LOW ASSY AWX9657
1..DIGITAL MAIN ASSY AWX9719
NSP 1..BLUETOOTH AD ASSY(VSX-LX53) AXF7022
2..BLUETOOTH ASSY AWM8111
1..FM/AM TUNER UNIT AXX7265
Mark No. Description Part No.
[1] Jigs list
Name JigNo. Remarks
30P board to board extension jig cable x 2 GGD1682 Diagnosis for DAC Assy
24P + 14P board to board extension jig cable GGD1683 Diagnosis for DAC Assy
20P + 20P board to board extension jig cable GGD1677 Diagnosis for AUDIO Assy
19P FFC GGD1678Diagnosis for AUDIO Assy
[2] Lubricantsand GluesList
Name Lubricantsand GluesNo. Remarks
Silicone Grease GEM1057 Refer to “9.2 EXTERIOR SECTION”
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

14 VSX-LX53
12 3 4
A
B
C
D
E
F
12 3 4
4. BLOCK DIAGRAM
4.1 OVERALL WIRING DIAGRAM
1.V-5_V
2.GNDV
3.V+5_V
4.GNDV
5.ZONE3_OUT
6.GNDV
7.ZONE2_OUT
8.GNDV
9.DVR_OUT
10.GNDV
11.MONITOR_OUT
12.GNDV
13.DVR_IN
14.GNDV
15.VIDEO_IN
16.GNDV
17.TV/SAT_IN
18.GNDV
19.DVD_IN
20.GNDV
20
2020
20
11/75
TUNER
MODULE
1.V+5_E
2.POWL
3.POWE
4.GNDD
1.
2.
3.
39/350
1.AC1
2.AC2
3.VF
4.V+5_
5.GND
6.GND
7.ACW
4.XHPDET 3.HPR 2.GNDHP 1.HPL
*1.00mm
ADD7729-
ADD7733-
*1.00mm
CN8301 CN8302
CN3451
CN3001
JP3002
CN2504
CN3601 CN8303
JP8403
SYXJ5
*3
*3
AXX7265-
TUNER
1.GNDD 2.CEC_FRONT 3.WP EDID 4.HPD
CN3003
ADD7734-
4/50
5
CN7504
5.GNDCH 4.GND_USB 3.D_+ 2.D_- 1.V+5_USB
1.GNDD 2.CEC_IO 3.WP_EDID 4.HOTDET5
JA7503
19.V+5D
18.V+5F 17.GNDD 16.HDSDA5 15.HDSCL5 14.SDA_SINK 13.SCL_SINK 12.RFXC- 11.GNDD 10.RFXC+ 9.RFX0- 8.GNDD 7.RFX0+ 6.RFX1- 5.GNDD 4.RFX1+ 3.RFX2- 2.GNDD 1.RFX2+
CN7501
3
CN2
24
CN2502
14
CN3001
15
CN3901 CN2861
11
CN3902
3
CN3
2414
CN3794CN3792
2414
CN3793CN3791 C
2414
CN2104 CN2103C
C
CN3361
20 20
CN3362
723
CN3363CN3364
11 15
CN3774CN3772
1511
CN3773CN3771
1511
2020 20 20
723
CN5804 CN5805
20.V+5_USB
19.V+5_USB
18.GND_USB
17.GND_USB
16.V+5_XM
15.V+5_XM
14.GND_XM
13.GND_XM
12.NC
11.NC
10.NC
9.NECK6
8.NECK8
7.RY VL
6.WATTS
5.NC
4.NC
3.NC
2.XOLERR
1.RY AF
20.RY CR
19.RY FH
18.RY B
17.XPROTECT
16.NC
15.XDCERR
14.GNDD
13.GNDD
12.12VTRG1
11.12VTRG2
10.12VERR
9.232POW
8.GNDD
7.IRIN
6.RMC
5.SRIN
4.V+5R6_EV
3.V+5R6_EV
2.GNDD
1.GNDD
1.V+12_RY
2.V-12_RY
3.GND_TRG
4.GND_TRG
5.V+12V_TRG
6.NECK6
7.NECK8
8.RY VL
9.WATTS
10.XOLERR
11.RY AF
12.RY CR
13.RY FH
14.RY B
15.XPROTECT
16.XDCERR
17.GNDD
18.GNDD
19.12VTRG1
20.12VTRG2
21.12VERR
22.232POW
23.GNDD
1.IR IN
2.RMC
3.SR IN
4.V+5R6_EV
5.V+5R6_EV
6.GNDD
7.GNDD
*1.00mm
1.MICOUT 2.GNDA 3.V+7_A 4.GNDA 5.GNDA 6.V-7_A
7.MICDET
CN603CN602
3.BT L
2.GNDD
24.GNDADS 23.FR IN 22.GNDADS 21.FL IN 20.GNDDAS 19.FR OUT 18.GNDDAS 17.FL OUT 16.GNDDAS 15.SW OUT 14.GNDDAS 13.C OUT 12.GNDDAS 11.SR OUT 10.GNDDAS 9.SL OUT 8.GNDDAS
7.SBR/FHR OUT 6.GNDDAS 5.SBL/FHL OUT 4.GNDDAS 3.ZR OUT 2.GNDDAS
11.V5_USB
10.V5_USB 9.GNDUSB 8.GNDUSB
7.XRDSRST
6.RDSCLK 5.RDSSI 4.TUSI 3.TUSCK 2.TUSO 1.TUCE 1.GNDD
2.GNDD 3.VLSCK 4.VLSO 5.Z2VLSO 6.Z3MUTE 7.Z2MUTE 8.SBMUTE 9.AMUTE 10.SB/FH SEL
11.LSSN 12.MICDET 13.RYHP
14.XHPDET 15.GNDD
1.TUCE
2.TUSO
3.TUSCK
4.TUSI
5.GNDT
6.TL
7.V+9T
8.TR
9.VSM
10.FMDET
11.GNDT
14.SIRIUSL
13.GNDSI
12.SIRIUSR
11.GNDSI 10.V+5_AD 9.V+5_AD 8.GNDAD 7.GNDAD 6.V+12_A 5.V+12_A 4.GNDA 3.GNDA 2.V-12_A 1.V-12_A
1.BT L 2.GNDD 3.BT R 4.GNDD 5.XSIRST 6.SIRX 7.SITX
8.V+3R3_D
9.V+3R3_D 10.GNDD 11.GNDD 12.V+5_D 13.V+5_D
14.DIRPOW 15.DSPSO 16.DSPSCK
17.RYAC 18.ZDZF 19.XZ2DARST 20.XDARST 21.DACS 22.F96K
1.BADA 2.SADA 3.CADA
4.FADA 5.DABCK 6.DALRCK 7.FLRCK 8.FBCK 9.GNDD
JA905 CN601 CN9304 CN9303C
CN1501CN1502
CN1503
5
*1.00mm
*1.00mm
*1.00mm
19/300
ADX7732-
ADX7731-
5/480
30.BT L
1.V5_USB 11.TUCE
15.GNDD 14.GNDD 2.XHPDET 1.GNDD
20.V+5R6_EV
19.V+5R6_EV
18.GNDD
17.GNDD
16.EV232RX
15.EV232TX
14.232CDET
13.232POW
12.GNDD
11.FANCTL
10.FANERR
9.XOSDRST
8.OSDCS
7.OSDSCK
6.OSDSO
5.SCL
4.SDA
3.CDET
2.V+5_V
1.V+5_V
39.V+5R6_EV
38.V+5R6_EV
37.GNDD
36.GNDD
35.RMC
34.GNDD
33.IRIN
32.SRIN2
31.XOLERR
30.EVREQO
29.BTID
28.XOLERR
27.EVREQO
26.XEMRST5
25.EVSI5
24.EVSO
23.EVSCK
22.EVREQI5
21.TEMPERR
20.EMPOW
19.LOWPOW
18.XSMUTE
17.HOTPLUG
16.CECIO
15.XVDDERR
14.XDCERR
13.XPROTECT
12.EV232RX
11.EV232TX
10.232EV
9.232POW
8.232CDET
7.TEMPL
6.TEMPH
5.XFANERR
4.WATTS
3.HPD
2.WP EDID
1.ACRY
4/500
D20PYY0450E
*2mm
JP3365
8/300
PF08PG0S30
7.MICOUT 6.GNDA 5.V+7_A 4.GNDA 3.GNDA 2.V-7_A 1.MICDET
CN3471
JH2505
7
CN6610CN6410
55
CN6110
5
CN6310
5
CN6010
8.V+12_RY
7.V-12_RY
6.GND_TRG
5.V+12_TRG
4.GND_XM
3.V+5_XM
2.EXT_AC2
1.EXT_AC1
JP4701
CN4702
1.V+12_RY 2.V-12_RY 3.GND_TRG 4.V+12_TRG 5.GND_XM 6.V+5_XM 7.GND_USB 8.V+5_USB
8
8/100
PF08GG0S10
JP4303
CN4301
JP4302
55 755
CN5310 CN5010CN5410 CN5610CN5110
2
CN604
3
CN605
2
CN606
2/75
PG02KA-F07
3/100
PG03KA-F10
2/75
PG02KA-F07
2.GNDD 1.POS2 3.GNDD 2.GNDD 1.POS3
2.GNDD 1.POS1
ADD7731-
7/480
JA7501 JA7502
JA3471JA3472
iPod VIDEO IN MIC IN
iPod Direct USBHDMI IN5 HEADPHONE IN
JA3451
FU10
!
*4
*4
FU11
!
CN3002
for DBUG&D.L.
JA250JA2505JA2504JA2502JA2501
JA2951(/H) CD-R/T
INOUTCD
IN
DVR
INOUTVIDEO
IN
TV/SAT
ININ
DVDZONE2
OUT
ZONE3
OUT
JA8601
232C MONITOR IN2 IN1
OUT (DVR) (DVD)
JA8301JA8304
PR
PB
YY
PB
PR
JA3605 JA3603JA3602 JA3601
DVD
ININ
TV/SAT
OUT
VIDEO
IN
ZONE2
OUTIN
MONITOR
OUT
DVRDVR
JA2002JA2008
OPT IN1
COAX
IN1 IN2
CN7001 CN7003CN7002
JP5723
JP5722
JP5723_1
JP5722_1
ADX7461-
ADX7461-
RF 5V OUT
JA5815
JA5815
SR IN
SR OUT
IR
JA5812
IR
JA5811
IR
JA5810
IN1 IN2 OUT
JA5807
12V TRG1
12V TRG2
FRONT
CENTER
SURROUND S-BACK F-HEIGHT/F-WIDE
RL RL RLRL
JA5800 JA5801 JA5802
JA906 JA901 JA902 JA903JA904 JA1601 JA1602
BD IN IN1 IN2 IN3IN4 OUT1 OUT2
JA950
LAN
20.GNDV
19.GNDV
18.CVBSIN
17.GNDV
16.CV/SYOUT
15.GNDV
14.SCOUT
13.GNDV
12.CYOUT
11.GNDV
10.CBOUT
9.GNDV
8.CROUT
7.GNDV
6.CRIN
5.GNDV
4.CBIN
3.GNDV
2.CYIN
1.GNDV
1/140
1/140
J0052
J0054
J0055
J0056
J0057
J0058
JP2505
MODEL
G
F
Q
J
L
M
I
B
R
E
S
T
VX
H
H1/2- H2/2
()
()
POWER AMP ASSY (AWX9660)
PRESTAGE ASSY (AWX9580)
USB REGULATOR
ASSY (AWX9581)
XM REGULATOR
ASSY (AWX9667)
HEADPHONE
ASSY
(AWX9590)
CONNECT ASSY
(AWX9592)
FRONT MIC&VIDEO
ASSY (AWX9593)
DISPLAY ASSY
COMPOSITE ASSY
(AWX9568)
D-AUDIO BRIDGE
ASSY (AWX9569)
A-DAC BRIDGE ASSY
(AWX9571)
FRONT HDMI
USB ASSY
(AWX9565)
COMPONENT ASSY (AWX9572)
DIGITAL MAIN ASSY (AWX9719)
POSI 1 ASSY
(AWX9576) W
POSI 3 ASSY
(AWX9578)
D
E1/10- E10/10
(VSX-LX53: AWX9669)
(VSX-2020-K: AWX972
ZBIND L BACK
ASSY (AWX9585)
CN8404
CN3472
3.GNDCH 2.FRONTV 1.GNDCH
3
ADX7739-
3/400
3
1.NC
2.FRONTV
3.GNDF
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

15
VSX-LX53
56 7 8
56 7 8
A
B
C
D
E
F
!
AC CORD
SECONDARY
PRIMARY
MAIN TRANS
3/50
1.V+5_EV
2.POWLED
3.POWER KEY
4.GNDD
*2mm
1.JOGA
2.JOGB
3.GNDD
4/50
6
1.AC1
2.AC2
3.VF
4.V+5_V
5.GNDV
6.GNDV
7.ACWP
POWER AMP
A-REGV-REG
XM_
REGULATOR
!
FU7
!
FU6
PF06PG0S50
6/500
D20PYY0405E
D20PYY0305E
!
JH3003JH3002
CN3052
CN4102
CN4002
*1
*4
!
*4
FU6,FU7 FU8,FU9
MODEL
ATS7435-
AC CORDMAIN TRANS
*1
SYXJ5
!
BOARD IN
FFC
2.0mm FLAT CABLE
FFC CONNECTOR
2.0mm CABLE HOLDER
*2mm
XDG3061-
BOARD TO BOARD
T1501
FU1 FU4
CAUTION - FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE WITH SAME TYPE AND RATINGSOF FUSE.
CN4001
CN4101
RL1,RL1',RL7
RL4,RL5,RL8,RL9,RL10
RL2,RL3
RL6
UL TUBE
6
JP3001
N3003
ANOTHER CONNECTOR
CN3401CN3501
JP3003
JP3002
3
CN2501
24
CN2502
14
CN3001
3
CN3785
2414
CN3794CN3792
2414
CN3793CN3791
3030
CN3783 CN3781
2414
CN2104 CN2103
3030
CN2101 CN2102
CN3784
3030
CN3782
3030
V-REG A-REG
1.NC 2.SBMUTE 3.AMUTE 4.GNDA 5.GNDA 6.RSOUT 7.GNDA 8.LSOUT 9.GNDA
10.FR OUT
11.GNDA 12.C OUT 13.GNDA 14.FL OUT 15.GNDA 16.SB/FH R OUT
17.GNDA 18.SB/FH L OUT 19.GNDA
3.BT L
2.GNDD 1.BT R
22.GNDADS 21.FL IN 20.GNDDAS 19.FR OUT 18.GNDDAS 17.FL OUT 16.GNDDAS 15.SW OUT 14.GNDDAS 13.C OUT 12.GNDDAS 11.SR OUT 10.GNDDAS 9.SL OUT 8.GNDDAS
7.SBR/FHR OUT 6.GNDDAS 5.SBL/FHL OUT 4.GNDDAS 3.ZR OUT 2.GNDDAS 1.ZL OUT
10.V+5_AD 9.V+5_AD 8.GNDAD 7.GNDAD 6.V+12_A 5.V+12_A 4.GNDA 3.GNDA 2.V-12_A 1.V-12_A
2.GNDD 3.BT R 4.GNDD 5.XSIRST
6.SIRX 7.SITX
8.V+3R3_D
9.V+3R3_D
10.GNDD 11.GNDD 12.V+5_D 13.V+5_D
14.DIRPOW 15.DSPSO 16.DSPSCK
17.RYAC 18.ZDZF 19.XZ2DARST 20.XDARST 21.DACS 22.F96K
23.F192K
24.XADRST
25.XTLO 26.XDIRRST
27.DSPSI 28.DIRCS
29.UNLK 30.DAZDB
1.BADA 2.SADA 3.CADA
4.FADA 5.DABCK 6.DALRCK 7.FLRCK 8.FBCK 9.GNDD 10.DAMCK 11.GNDD 12.GNDD 13.ZMCLK 14.GNDD 15.ZBCK 16.ZFADA 17.ZLRCK 18.GNDD 19.DIRMCKO 20.GNDD 21.DIRLRCK 22.DIRDATO 23.DIRBCK 24.DIRDATI 25.GNDD 26.DIRMCKI 27.GNDD 28.ADFADAT 29.GNDD 30.MSPDIF
HDMI CONNECTOR
CN9301 CN9302
CN9801
CN4081
3
1.V+5_V
2.GNDV
3.GNDV
4.V-5_V
5.FAN DRIVE
6.FAN STOP
*1.00mm
30.BT L
1.DAZDB
30.BADA
1.MSPDIF
7
7.RYAC
6.GNDD
5.GNDD
4.GNDD
3.V+5R6_EV
2.V+5R6_EV
1.V+5R6_EV
ADX7738-
7/225
JP51
3.V+FAN 2.V-FAN 1.LOCK DET
1.GNDAD
2.V+9_AD
3.V+12_A
4.GNDA
5.GNDA
6.V-12_A
7/175
PF07PG0S17
4.GNDTRG
3.V+12_TRG
2.V-12_A
1.V+12_A
JP4103
1.AC1
2.AC2
3.-VF
4.V+5R6_V
5.GNDD
6.GNDD
7.ACWP
CN4052
7
!
FU8
!
FU9
*4
PF06PG0S45
6/450
7
6610
5
CN6510
5
CN6010
5
CN6210
CN6603
ADD7730-
19/50
reverse
5557
CN5510 CN5210CN50105610
CN5701
04 CN605
2
3/100 2/75
PG02KA-F07
2.GNDD 1.POS2 1.POS3
PIN JACK
JA71 YEL JA71_1 WHT
*4
FU4
!
*4
FU1
!
CN81
SYXJ5
(SYXJ5)
FU10MODEL
SYXJ5
FU11
(T4A H/250V)
AEK7075-
(T1.6A L/250V)
AEK1061-
(T800mA L/250V)
AEK7072-
(T5A L/250V)
REK1104- AEK7074-
(T1.25A L/250V) -
JA3201JA3101JA2506JA25052504
FH/FW
PRE OUT
SBS
L
R
L
R
CF
CD-R/TAPE
INOUTCD
IN
DVR
INUT
JA2006JA2004JA2003JA2002JA2008
OPT OUT1OPT IN1 OPT IN2 OPT IN3
COAX
IN1 IN2
CN7003CN7002
JA1601 JA1602
OUT1 OUT2
JA9501
LAN
JA9301
BT ADAPTER
PORT
J0053
VSX-LX53
VSX-2020-K
VSX-2020-K
VSX-LX53
VSX-LX53
ADE7135-
MICROPHONE MODEL REMO-COM
*OPTION
AXD7592-
BLUETOOTH ADiPod CABLE
APM7009-VSX-2020-K SYXJ5
4/250
PF04GG0S25
AXD7592-APM7009- ADE7135- AXF7022-SYXJ5
-
U
K
P
O
N
• NOTE FOR FUSE REPLACEMENT
SHIELD CABLE
)
()
()
REGULATOR ASSY
(AWX9579)
Y (AWX9580)
POWER SW ASSY
(AWX9588)
ENCODER ASSY
(AWX9589)
LAY ASSY
PRIMARY ASSY
(AWX9676)
D-DAC BRIDGE
ASSY (AWX9570)
AUDIO ASSY
(AWX9644)
DAC LOW ASSY
(AWX9657)
Y (AWX9719)
POSI 2 ASSY
(AWX9577)
W
A
A1/3- A3/3
C
C1/2- C2/2
10/10
AA
BIND DM CABLE ASSY
(AWX9575)
BIND L FRONT ASSY
(AWX9574)
BINDER ASSY
(AWX9595)
AB
BIND R BACK ASSY
(AWX9586)
AC
BIND R FRONT ASSY
(AWX9584)
AD
Y
BIND DISP FFC ASSY
(AWX9668)
AE
53: AWX9669)
20-K: AWX9726)
When ordering service parts, be sure to refer to "EXPLODED VIEWSand PARTS
LIST" or "PCB PARTSLIST".
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.
: The power supply is shown with the marked box.
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

16 VSX-LX53
12 3 4
A
B
C
D
E
F
12 3 4
4.2 BLOCK DIAGRAM FOR AUDIO BLOCK
COAX2(CD)
IC904 HDMI RECEIVER SII9233ACTU
OPT IN1(TV/SAT)
OPT IN2(DVR/BDR)
OPT IN3(VIDEO)
COAX1(DVD)
HDMI IN4 HDMI IN3 HDMI IN2 IC906
HDMI SWITCH CXB1444R
HDMI OUT1
IC9003 1st DSP DSPA56720AG
IC1602 HDMI TRANSMITTER SII9134CTU
IC2471 ZONE2 DAC AK4388ET
TX1
JA904 JA903 JA902
JA2002 JA2003 JA2004
JA1601
JA2006
FRONT HDMI IN CD-R OUT
ZONE3 OUT
SW DownMix
JA3551
IC2701, IC2702
JA2951
JA2506
<<AUDIO ZONE OUT>>
HDMI IN1 JA901 IC1603
HDMI TRANSMITTER SII9134CTU JA1602 HDMI OUT2
NETWORK JA9501
IC9015 DSP/2ch DIRECT SELECTOR
I2S
DIGITAL MAIN ASSY
S/PDIF
IC2451 (ZONE2)
LPF
S/PDIF
DSD(FR,SL)
I2S
(C,SW,SL,SR)
I2S(SBL,SBR) DSD(C,SW,SR)
IC1805 S/PDIF SELECTOR
I2S
I2S(FL,FR)
DSD(FL)
2ch PCM Only
I2S(FL,FR
A/D BUFFER IC2401 NJM4565MD
I2S
NOTE SPDIF:SONY/Philips Digital Interface I2S:The Inter-IC Sound
USB JA3501
IC3551 HDMI EQ
IC1811 DIR(orUSB) /HDMI SELECTOR
IC1814 ZONE2 XM(USB)/NET SELECTOR
OPT OUT1
I2S
DSD
BD
JA906
DSD(SL) S/PDIF
S/PDIF
I2S(FL,FR)
DSD(FL)
I2S(except FL,FR)
JA2008
DAC LOW ASSY
BT
IC101 MAIN LSI (EMMA) UPD61283F1-407LU2A
IC9506 ETHERNET CONTROLLER LAN921-ABJ
DAC LOW ASSY
IC2201 DAC PCM1691
LPF
IC2231(FL,FR) IC2281(C,SW) IC2331(SL,SR) IC2381(SBL,SBR)
IC2001 DIR&DIT AK4118AEQ
S/PDIF
I2S
IC2011 SELECTOR
IC2431 ADC PCM1804DB
I2S(DATA)
I2S(BCK,LRCK)
IC1810 DIR/USB SELECTOR
IC1604 BASIC AUDIO SELECTOR
IC1815 DSD/PCM SELECTOR
AUDIO BLOCK DIAGRAM
E
C
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

17
VSX-LX53
56 7 8
56 7 8
A
B
C
D
E
F
FRONT HDMI IN
MIC
TV/SAT
VIDEO
CD
PREOUT L/R
PREOUT SW
PREOUT SL/SR
PREOUT SBL/SBR
CD-R OUT
DVR OUT
ZONE3 OUT
SP L/R
SP C
SP SL/SR
SP SBL/SBR
HP
SW DownMix
JA3471
JA3551
IC2701, IC2702
JA2502 JA2504
JA2506
SW PRE Amp IC2751
<<POWER AMP>>
JA2951
JA2506 JA2504
JA3451
JA5800 JA5800 JA5801 JA5801 , JA5802
JA3101 JA3101 JA3201 JA3201
PREOUT C
JA3101
DVD DVR
CD-R/TAPE
JA2501 JA2501
HEADPHONE AMP
<<POWER AMP INPUT BUFFER>>
HEADPHONE ASSY
PRESTAGE ASSY
POWER AMP ASSY
<<PREOUT>>
<<AUDIO ZONE OUT>>
MIC Amp IC3471
NJM4565MD
FRONT MIC & VIDEO ASSY
USB JA3501
IC3551 HDMI EQ CXB1443R
FRONT HDMI USB ASSY
IC3101
IC3151
IC3201
IC3251
AUDIO ASSY
NJM4565MD
IC2801 NJM4565MD
JA2503
PREOUT FHL/FHR
JA3201
IC3221 PL2z SELECTOR
SP FHL/FHR
JA5802
RY5851, RY5811
DAC LOW ASSY
TUNER Module
IC3271
IC2501 Selector / Volume / PRE Amp BD3473KS2
C
G
A
F
H
Q
I
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

18 VSX-LX53
12 3 4
A
B
C
D
E
F
12 3 4
4.3BLOCK DIAGRAM FOR DIGITAL MAIN VIDEO BLOCK
(COMPONENT ASSY)
(COMPONENT ASSY)
HDMI SW
SONY
"CXB1444R"
HDMI Rx
Silicon Image
"SiI9233ACTU"
Video Decoder
Analog Devices
"ADV7181C"
IC1102
EMMA2RL2
NEC
"UPD61283F1-407LU2A"
IP.SCALER
Marvell
"88DE2750"
HDMI Tx
Silicon Image
"SiI9134CTU"
IC1602
HDMI Tx
Silicon Image
"SiI9134CTU"
IC1603
Gate Array
SEIKO EPSON
"PE7008A"
IC604
iPod Authentication
APPLE
(RENESAS)
"341S2164"
IC602
DIGITAL MAIN VIDEO BLOCK DIAGRAM
HDMI IN4 HDMI IN3
HDMI BDIN
HDMI IN1 HDMI IN2
HDMI IN5
(FRONT HDMI ASSY)
EDID
EDID
VENC
USB
uCOM
GUI
COMPOSITE
COMPONENT-Y COMPONENT-Pb COMPONENT-Pr
COMPONENT-Y COMPOSITE COMPONENT-Pb COMPONENT-Pr
USB
(FRONT-USB ASSY)
CK:27M-148.5MHz /DT:36bit/DE,VS,HS
CK:27M /DT:BT656(8bit)
Only VDEC480i output CK:27MHz /DT:BT656(8bit)
CK:27M-148.5MHz /DT:20bit/DE,VS,HS
CK:27M-148.5MHz /DT:36bit/DE,VS,HS
(DT:20bit)
HDMI OUT1
HDMI OUT2
EVENT ucom
(DISPLAY ASSY)
IP
ADJ.
SC
TMDSDIGITAL VIDEO
CEC ANALOG VIDEO
DIGITAL AUDIO
VBUSE2IN
VBUSMAIN
VBUSE2OUT
IC101
IC1204
IC906
IC904
AWX9620 AWX9627
AWX9621 AWX9626 AWX9628 AWX9718 AWX9719
More than VDEC480p output CK:27M-74.25MHz
/DT:20bit/DE,VS,HS
EDIGITAL MAIN ASSY
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

19
VSX-LX53
56 7 8
56 7 8
A
B
C
D
E
F
4.4 BLOCK DIAGRAM FOR COMPOSITE VIDEO BLOCK
COMPOSITE VIDEO BLOCK DIAGRAM
IC8301
IC8401
IC8501
EMMA
COMPOSITE
INPUT
COMPOSITE
OUTPUT
VDEC
OSD IC
PDC162A
LPF
FRONT VIDEO
DVD
TV/SAT
VIDEO
DVR/BDR
VIDEO AMP NJM2505AF
iPod
ZONE2 OUT MONITOR OUT DVR/BDR OUT
95
94
93
92
91
89
88
87
83
82
81
79
77
75
75
75
VIDEO SW NJW1327FU1
96
EDIGITAL MAIN ASSY
COMPONENT ASSY
D
COMPOSITE VIDEO BLOCK DIAGRAM
IC8301
IC8401
IC8501
EMMA
COMPOSITE
INPUT
COMPOSITE
OUTPUT
VDEC
OSD IC
PDC162A
LPF
FRONT VIDEO
DVD
TV/SAT
VIDEO
DVR/BDR
VIDEO AMP NJM2505AF
iPod
ZONE2 OUT MONITOR OUT DVR/BDR OUT
95
94
93
92
91
89
88
87
83
82
81
79
77
75
75
75
VIDEO SW NJW1327FU1
96
EDIGITAL MAIN ASSY
COMPONENT ASSY
D
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

20 VSX-LX53
12 3 4
A
B
C
D
E
F
12 3 4
4.5 BLOCK DIAGRAM FOR COMPONENT VIDEO BLOCK
I2C
IC8301
EMMA
IN 1
(DVD)
IN 2
(DVR/BDR)
MONITOR OUT
COMPONENT
INPUT
COMPONENT
OUTPUT
VCYOUT VCBOUT VCROUT
VDEC LPF
LPF LPF
CDET
LPF LPF LPF
VIDEO SW NJW1327FU1
19 21 22 15 16 18 33 34 35 30 31 32 41 40 39 44 43 42
71 70
69
68
75
75
62 61
60
59
75
75
53 52
51
49
75
75
COMPONENT VIDEO BLOCK DIAGRAM
EDIGITAL MAIN ASSY
COMPONENT ASSY
D
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com