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ORDER NO.
RRV2788
VSX-55TXi
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-53TX
Model
VSX-55TXi VSX-53TX
VSX-55TXi
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type
KUXJI/CA KUXJI/CA AC120V AC120V
Power Requirement
Remarks
For details, refer to "Important symbols for good services".
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 2003
T-ZZK JUNE 2003 printed in Japan
1
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SAFTY INFORMATION
A
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.
B
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 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)
C
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.
(FOR USA MODEL ONLY) 1. SAFETY PRECAUTIONS
The following check should be perfor med for the continued protection of the customer and ser vice technician.
LEAKAGE CURRENT CHECK
D
Measure leakage current to a known ear th ground (water pipe, conduit, etc.) by connecting a leakage current tester such as Simpson Model 229-2 or equivalent between the ear th ground and all exposed metal par ts 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.
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 character istics. 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 par ts which have these special safety character istics are identified in this Service Manual. Electr ical 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 infor mation, always consult the current PIONEER Service Manual. A subscription to, or additional copies of, PIONEER Ser vice Manual may be obtained at a nominal charge from PIONEER.
E
Device under test Test all exposed metal surfaces
Leakage current tester
Reading should not be above 0.5 mA
Also test with plug reversed (Using AC adapter plug as required)
Earth ground
AC Leakage Test
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2
1 2
VSX-55TXi
3 4
5
6
7
8
[ Important symbols for good services ]
In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely. When you find the procedures bearing any of the symbols, be sure to fulfill them:
A
1. Product safety
You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and should keep the safety during servicing by following the safety instructions described in this manual.
2. Adjustments
To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable. In accordance with the procedures or instructions described in this manual, adjustments should be performed.
3. Cleaning
For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning, proper cleaning should be performed to restore their performances.
B
4. Shipping mode and shipping screws
To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or the shipping screws should be installed before shipping out in accordance with this manual, if necessary.
5. Lubricants, glues, and replacement parts
Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed ones should be used.
C
CONTENTS
SAFTY INFORMATION ........................................................................................................................................2 1. SPECIFICATIONS .............................................................................................................................................5 2. EXPLODED VIEWS AND PARTS LIST.............................................................................................................6 2.1 PACKING ....................................................................................................................................................6 2.2 EXTERIOR SECTION ................................................................................................................................8 2.3 REAR PANEL SECTION ..........................................................................................................................10 2.4 HEAT SINK SECTION ..............................................................................................................................12 2.5 FRONT PANEL SECTION ........................................................................................................................14 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ..........................................................................................16 3.1 BLOCK DIAGRAM....................................................................................................................................16 3.1.1 AUDIO BLOCK DIAGRAM .................................................................................................................16 3.1.2 DSP BLOCK DIAGRAM .....................................................................................................................18 3.1.3 1394 BLOCK DIAGRAM ....................................................................................................................20 3.1.4 POWER AMP BLOCK DIAGRAM ......................................................................................................21 3.1.5 VIDEO BLOCK DIAGRAM .................................................................................................................22 3.2 OVERALL WIRING DIAGRAM .................................................................................................................24 3.3 7.1 CH I/O, V-AUDIO, FRONT IN and OPTICAL IN ASSYS.....................................................................26 3.4 INPUT CONNECT, RS232C and 12V TRIGGER ASSYS ........................................................................28 3.5 COAXIAL IN ASSY ...................................................................................................................................30 3.6 COMPONENT ASSY................................................................................................................................32 3.7 VIDEO ASSY ............................................................................................................................................34 3.8 MAIN CONTROL ASSY (1/3) ...................................................................................................................36 3.9 MAIN CONTROL ASSY (2/3) ...................................................................................................................38 3.10 MAIN CONTROL ASSY (3/3) .................................................................................................................40 3.11 MIC & F.OPT IN, MIC AMP and DSP CONNECTION ASSYS ...............................................................42 3.12 POWER AMP IN, FAN CONNECTION and FAN DRIVE ASSYS...........................................................44 3.13 DSP ASSY (1/2) .....................................................................................................................................46 3.14 DSP ASSY (2/2) .....................................................................................................................................48 3.15 1394 ASSY (1/2) (VSX-55TXi ONLY) .....................................................................................................50 3.16 1394 ASSY (2/2) (VSX-55TXi ONLY) .....................................................................................................52 3.17 DISPLAY ASSY ......................................................................................................................................54 3.18 VOLUME, MULTI JOG and HEADPHONE ASSYS ................................................................................56 VSX-55TXi
5 6 7 8
D
E
F
3
1
2
3
4
A
B
C
D
3.19 POWER AMP-L ASSY ........................................................................................................................... 58 3.20 POWER AMP-R and POWER AMP-C ASSYS ...................................................................................... 60 3.21 REGULATOR ASSY............................................................................................................................... 62 3.22 SP/PS, DIODE, TRANS 2-1 and VH TR ASSYS.................................................................................... 64 3.23 TRANS 2-2, TRANS 1 and PRIMARY ASSYS....................................................................................... 66 3.24 FM/AM TUNER MODULE ...................................................................................................................... 68 4. PCB CONNECTION DIAGRAM ..................................................................................................................... 70 4.1 7.1CH I/O ASSY ...................................................................................................................................... 71 4.2 V-AUDIO IN ASSY.................................................................................................................................... 73 4.3 FRONT IN and OPTICAL IN ASSYS ....................................................................................................... 74 4.4 COAXIAL IN ASSY .................................................................................................................................. 75 4.5 INPUT CONNECT, RS232C and 12V TRIGGER ASSYS........................................................................ 76 4.6 COMPONENT ASSY ............................................................................................................................... 78 4.7 VIDEO ASSY ........................................................................................................................................... 79 4.8 MAIN CONTROL ASSY ........................................................................................................................... 80 4.9 MIC & F. OPT IN, MIC AMP and DSP CONNECTION ASSYS ............................................................... 84 4.10 POWER AMP IN ASSY.......................................................................................................................... 86 4.11 FAN CONNECTION ASSY .................................................................................................................... 88 4.12 FAN DRIVE ASSY.................................................................................................................................. 89 4.13 DSP ASSY ............................................................................................................................................. 90 4.14 DISPLAY ASSY...................................................................................................................................... 92 4.15 VOLUME, MULTI JOG and HEADPHONE ASSYS................................................................................ 96 4.16 POWER AMP L and POWER AMP C ASSYS ....................................................................................... 98 4.17 POWER AMP R ASSY......................................................................................................................... 106 4.18 REGULATOR ASSY............................................................................................................................. 114 4.19 SP/PS ASSY ........................................................................................................................................ 122 4.20 DIODE, TRANS 2-1 and VH TR ASSYS .............................................................................................. 124 4.21 TRANS 2-2, TRANS 1 and PRIMARY ASSYS..................................................................................... 126 4.22 1394 ASSY (VSX-55TXi ONLY) ........................................................................................................... 130 4.23 FM/AM TUNER MODULE .................................................................................................................... 131 5. PCB PARTS LIST ......................................................................................................................................... 132 6. ADJUSTMENT ............................................................................................................................................. 145 7. GENERAL INFORMATION ........................................................................................................................... 146 7.1 DIAGNOSIS ........................................................................................................................................... 146 7.1.1 PROTECTION CIRCUIT CONTROL SPECIFICATION ................................................................... 146 7.1.2 DIAGNOSTICS OF AMPLIFIER SECTION ..................................................................................... 148 7.1.3 TROUBLE SHOOTING .................................................................................................................... 149 7.1.4 DISASSEMBLY................................................................................................................................ 154 7.2 PARTS.................................................................................................................................................... 157 7.2.1 IC ..................................................................................................................................................... 157 7.2.2 DISPLAY.......................................................................................................................................... 171 7.3 CLEANING............................................................................................................................................. 173 7.4 REMOTE CONTROL UNIT .................................................................................................................... 174 7.4.1 EXPLODED VIEWS AND PARTS LIST (VSX-55TXi : AXD7325) ................................................... 174 8. PANEL FACILITIES ...................................................................................................................................... 175
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1 2
VSX-55TXi
3 4
5
6
7
8
1. SPECIFICATIONS
Amplifier Section Video Section (Composite)
Input (Sensitivity/Impedance) LINE....................................................................1 Vp-p/75 Output (Level/Impedance) LINE....................................................................1 Vp-p/75 Frequency Response LINE...................................................5 Hz to 10 MHz +0 dB 3 Signal-to-Noise Ratio......................................................65 dB
A
Continuous average power output of 100 watts* per channel, min., at 8 ohms, from 20 Hz to 20,000 Hz with no more than 0.09%** total harmonic distortion (front).
Continuous Power Output Front.............100 W +100 W (20 Hz 20 kHz, 0.09%, 8 ) Center.........................100 W (20 Hz 20 kHz, 0.09%, 8 ) Surround.......100 W +100 W (20 Hz 20 kHz, 0.09%, 8 ) Surround Back ...............100 W +100 W (20 Hz 20 kHz, 0.09%, 8 )
FM Tuner Section
Frequency Range...................................87.5 MHz to 108 MHz Usable Sensitivity...............Mono: 13.2 dBf, IHF (1.3 µV/75 ) 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..............................................75 unbalanced
B
Audio Section
Input (Sensitivity/Impedance) PHONO MM....................................................4.7 mV/47 k LINE...............................................................335 mV/47 k Frequency Response PHONO MM.............................20 Hz to 20,000 Hz ± 0.3 dB LINE..............................................5 Hz to 100,000 Hz +0 dB 3 Output (Level/Impedance) LINE..............................................................335 mV/2.2 k Tone Control BASS...........................................................± 6 dB (100 Hz) TREBLE.......................................................± 6 dB (10 kHz) LOUDNESS.................................+4/+2 dB (100Hz/10 kHz) (at volume position -40dB) Signal-to-Noise Ratio (IHF, short circuited, A network) LINE...........................................................................101 dB Signal-to-Noise Ratio [EIA, at 1 W (1 kHz)] LINE.............................................................................83 dB
AM Tuner Section
Frequency Range....................................530 kHz to 1,700 kHz Sensitivity (IHF, Loop antenna).................................350 µV/m Selectivity.........................................................................25 dB Signal-to-Noise Ratio......................................................50 dB Antenna..............................................................Loop antenna
C
Miscellaneous
Power Requirements......................................AC 120 V, 60 Hz Power Consumption......................................................600 W Power Consumption in Standby mode..........................0.8 W AC Outlet SWITCHED...............................100 W (0.8 A) MAX Dimensions...........................420 (W) x 188 (H) x 464 (D) mm (16-9/16 (W) x 7-7/16 (H) x 18-5/16 (D) in.) Weight (without package)............................19.0 kg (41.9 lbs)
Measured pursuant to the Federal Trade Commissionís Trade Regulation rule on Power Output Claims for Amplifiers. ** Measured by Audio Spectrum Analyzer.
*
Furnished Parts
FM wire Antenna....................................................................1 AM loop Antenna....................................................................1 "AA" IEC LR6 batteries...........................................................4 Remote Control Unit...............................................................1 Microphone for Auto Surround Sound Setup..........................1 Microphone Stand for Auto Surround Sound Setup...............1 Operating Instructions............................................................1
D
Video Section (S jack)
Input (Sensitivity/Impedance)...............................1 Vp-p/75 Output (Level/Impedance)....................................1 Vp-p/75 Frequency Response.............................5 Hz to 10 MHz +0 dB 3 Signal-to-Noise Ratio......................................................65 dB
Component Video Section
Input (Sensitivity) ...............................................1 Vp-p/75 Output (Level/Impedance)....................................1 Vp-p/75 Frequency Response...........................5 Hz to 40 MHz +0 dB 3 Signal-to-Noise Ratio....................................................65 dB
NOTE: Specifications and the design are subject to possible modifications without notice, due to improvements.
E
· Lucasfilm and THX are trademarks or registered trademarks of Lucasfilm, Ltd. and TM. Surround EX is a jointly developed technology of THX and Dolby Laboratories, and is a trademark of Dolby Laboratories. All rights reserved. Used under authorization. · Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic", "Surround EX" and double-D symbol are trademarks of Dolby Laboratories. · "DTS", "DTS-ES Extended Surround" and "Neo:6" are trademarks of Digital Theater Systems, Inc.
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VSX-55TXi
5 6 7 8
5
1
2
3
4
2. EXPLODED VIEWS AND PARTS LIST
NOTES:
A
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. Screws adjacent to mark on product are used for disassembly. For the applying amount of lubricants or glue, follow the instructions in this manual. (In the case of no amount instructions, apply as you think it appropriate.)
2.1 PACKING
8 1 9
B
2 3 4
10
VSX-55TXi Only 11 12
5 6 7
C
14 15 13
16
Accessories
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
D
VSX-55TXi Only
VSX-55TXi
AM Loop Antenna (ATB7009)
FM Wire Antenna (ADH7004)
Operating Instructions
SETUP
RECEIVER MULTI
OPERATION
SYSTEM OFF
SOURCE
"AA" IEC LR6 batteries
S0URCE
TV
SYSTEM RECEIVER
DVD/LD
MULTI CONTROL
TV / SAT VCR/DVR TV CONT
OFF
VCR 2
CD MUSIC
TUNER ACOUSTIC EQ SB CH MODE
RECEIVER INPUT MULTI CH INPUT
DVD/LD
TV/SAT
VCR1/ DVR
TV CONT
MOVIE
MULTI OPERATION
MULTI CONTROL VCR2 VIDEO
MD/ TAPE2
Operating Instructions (VSX-55TXi : ARB7284) (VSX-53TX : ARB7285)
CD
SURROUND MODE STEREO/ DIRECT
E
CD-R/ TAPE1
TUNER TONE
RECEIVER EFFECT/CH SEL
ENTER
MIDNIGHT MUTE
DIMMER
LOUDNESS
1
SIGNAL SEL
2
DNR
3
BASS/TREBLE
4
+
8
DISC
5
VIDEO SEL
6
HI-BIT
7
MASTER VOLUME
MENU TUNER EDIT
TUNE
+10
TOP MENU
9
SYSTEM SETUP
MENU
0
ENTER
DIRECT ACCESS SEARCH MODE GUIDE
TOP MENU
SYSTEM SETUP
ST ST
GUIDE ENTER
TUNER EDIT
ENTER
TRACK EXIT
AUDIO
RETURN
TUNE
AUDIO
RETURN
MPX
DTV ON/OFF
DISP MODE
¶ 1 STATION 4 CHANNEL
TUNING
8
BAND
SUB TITLE
CHANNEL
-
DTV ON/OFF BAND
CHANNEL
+
3
DTV MENU CLASS
7
TV INPUT INPUT
+ ¡ STATION + ¢ CHANNEL +
TUNING
D.ACCESS
MPX
CLASS
DIMMER
LOUDNESS
TONE
EFFECT/CH SEL
ENTER
SIGNAL SEL DNR BASS/TREBLE DISC
TV CONTROL TV VOL TV CH
MULTI CH INPUT
MIDNIGHT
VOLUME
VIDEO SEL HI-BIT
+ -
+10
TV CONTROL
MOVIE MUSIC
ACOUSTIC EQ
SUB TITLE
MUTE
INPUT SELECT
MODE SURROUND REMOTE SETUP
STEREO/ DIRECT
CHANNEL
VOLUME
REMOTE SETUP
ENTER
SB CH MODE
Î
RECEIVER
F
Remote Control Unit (VSX-55TXi : AXD7325) 6
1
Remote Control Unit (VSX-53TX : AXD7365)
Microphone for Auto Surround Sound Setup (APM7004)
Microphone Stand for Auto Surround Sound Setup (AEB7269)
VSX-55TXi
2 3 4
5
6
7
8
(1) PACKING parts List
Mark No. 1 2 3 4 5 NSP 6 7 NSP 8 Description Microphone for Auto Surround Sound Setup Microphone Stand for Auto Surround Sound Setup FM Wire Antenna AM Loop Antenna Caution Sheet SP,E Part No. APM7004 AEB7269 ADH7004 ATB7009 ARM7056 NSP 11 NSP 12 13 14 15 16 "AA" IEC LR6 batteries "AA" IEC LR6 batteries Front Pad 45 Rear Pad 45 Packing Sheet Packing Case See Contrast table (2) VEM1023 AHA7374 AHA7375 RHC1023 See Contrast table (2) Mark No. 9 10 Description Remote Control Unit Battery Cover Part No. See Contrast table (2) See Contrast table (2)
A
Warranty Card EL ARY7007 Operating Instructions (English) See Contrast table (2) Polyetylene Bag Z21-038 (0.03*230*340)
B
(2) CONTRAST TABLE VSX-55TXi/KUXJI/CA and VSX-53TX/KUXJI/CA are constructed the same except for the following:
Mark NO 7 9 9 10 11 16 16 Symbol and Description Operating Instructions (English) Remote Control Unit 45/KU Remote Control Unit 53/KU Battery Cover "AA" IEC LR6 batteries Packing Case 55KU Packing Case 53KU VSX-55TXi /KUXJI/CA ARB7284 AXD7325 Not used AZN7896 VEM1023 AHD8199 Not used VSX-53TX /KUXJI/CA ARB7285 Not used AXD7365 AZA7424 Not used Not used AHD8203
C
NSP
D
E
F
VSX-55TXi
5 6 7 8
7
1
2
3
4
2.2 EXTERIOR SECTION
A
17 19
Fb
18
51 52 51 52
(VSX-53TX)
61
Fa
15 51 14 51 51 52
23
20 1 AJ
61
B
61
33
58
N
61
D
21 R
7
AH
E
22 6
52
AF
O P Q
23
L Fb P
63 63 (x4) (x10) 15 16 (VSX-55TXi) Refer to "2.3 REAR PANEL SECTION." 16
15
(VSX-53TX)
15 51 52 61 62 61
(VSX-55TXi)
AI
8 56
C
N
32
61
Q
52 3
O
2
AD
52 35 52 36
R
61
AE
25
52 52 52 37
I K
60 61
31
56
Q4
5
61 61 26
R
24
52
52
52
M
52
M
52
J T S
61
29 28
H
30
61 27
L
D
VSX-53TX ONLY 29 42 57 55 46 61 52 55 55 43
D
AG 9
61 65
61
Refer to "2.4 HEAT SINK SECTION." 26 34 34
K
A
50 26 10 61 38 61 64
G
VSX-55TXi ONLY 55
I S T J
54
38 26
S
40
55 29 59 41 38 38 38 65
A B C
(VSX-55TXi)
N
Fa
11
B C
54
39 54 38 52
G
44 61 57
53 53
E
61
61
55
H
45
65
E
52
13
12
AC
O
49 52 47 61 48 65 Refer to "2.5 FRONT PANEL SECTION." 52
F
VSX-55TXi ONLY
NON-CONTACT SIDE
4
52 52 65
CONTACT SIDE
48
8
1 2
VSX-55TXi
3
5
6
7
8
(1) EXTERIOR SECTION parts List
Mark No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 > 21 22 NSP 23 NSP 24 25 26 27 28 29 30 > 31 > 32 NSP 33 Description PRIMARY Assy SP/PS Assy DIODE Assy FAN CONNECTION Assy FAN DRIVE Assy TRANS 2-1 Assy TRANS 2-2 Assy TRANS 1 Assy VH TR Assy DSP ASSY MIC AMP Assy DSP CONNECTION Assy REGULATOR Assy Bonnet Case 45B Spacer 45A Spacer 45B Label (DD/DTS/THX) Label (FCC/DOC) Barrier 45 Left Beam 45 FU1 Fuse (10A) Primary Angle 35 Binder Mini Clamp Fan Box 45 Locking Card Spacer Trans Shield 45 Styling Sheet B Push Rivet Trans Frame 45 T1 Power Transformer FU4,FU5 Fuse (3.15A) Trans Label 45 Part No. AWX7968 See Contrast table (2) AWX8017 AWX8005 AWX7976 AWX8326 AWX7970 AWX7969 AWX8018 AWX8249 AWX8004 See Contrast table (2) See Contrast table (2) AZN7897 AEB7263 AEB7264 ARW7177 ARW7191 AEC7444 ANG7401 VEK1029 ANG7301 ZCA-BK1 VEC1597 ANG7413 PNW2917 ANG7400 AEC7437 AEC7370 ANG7399 ATS7328 REK1114 AAX7957 Mark No. 34 35 36 37 38 39 40 NSP 41 42 NSP 43 44 45 NSP 46 NSP 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 Description PCB Mold Bridge Frame 45F Bridge Frame 45R J7 21P FFC/60V Card Spacer Wire Clip (A) DSP Shield 45B Under Base Screw Cover 45A Wire Saddle Styling Sheet Stabilizer 45 Panel Stay 45 Energy Star Label Insulator Bottom Plate 45 DSP Shield 45A Screw Screw Screw Screw Screw Part No. AMR2534 ANG7409 ANG7410 ADD7355 DNK2769 VEC1355 ANG7403 See Contrast table (2) See Contrast table (2) DEC1450 AEC7413 ANG7408 AND7047 AAX7876 PNW2766 See Contrast table (2) See Contrast table (2) BBZ40P080FZK BBZ30P080FCC BBZ30P100FCC IBZ30P150FCC BBT30P080FCC
A
B
C
Screw ABA7066 Screw ABA7009 UL Tube ADN7007 Screw Cover See "2.5 FRONT PANEL SECTION" No. 19-3 Screw ABA1208
D
Screw Screw Spacer Circle Nylon Rivet Screw
IBZ30P080FCC IBZ30P100FCC AEC7330 AEC7408 See Contrast table (2)
(2) CONTRAST TABLE VSX-55TXi/KUXJI/CA and VSX-53TX/KUXJI/CA are constructed the same except for the following:
Mark NO 2 12 13 41 41 42 49 50 50 65 Symbol and Description SP/PS Assy DSP CONNECTION Assy REGULATOR Assy Under Base 45 Under Base 53 Screw Cover 45A Bottom Plate 45 DSP Shield 1394 A DSP Shield 45 A Screw VSX-55TXi /KUXJI/CA AWX8307 AWX8299 AWX8303 ANA7138 Not used Not used ANF7031 ANG7420 Not used BBZ30P080FCC VSX-53TX /KUXJI/CA AWX7975 AWX8024 AWX7967 Not used ANA7158 AEC7414 Not used Not used ANG7402 IBZ30P080FCC
F
E
NSP NSP
VSX-55TXi
5 6 7 8
9
1
2
3
4
2.3 REAR PANEL SECTION
13
A
14 12 21 11 21 29 22 29 21 21 32
15
21 21 23
(VSX-55TXi only)
24
B
18 2 1
I
3
21 29 21
(VSX-53TX only)
F G
For Exterior Sction
A
4
21 16
K
(VSX-55TXi only)
5
B AK 8
25
(VSX-55TXi only)
C
E6
17
For Exterior Sction
9
D
(VSX-53TX)
19 26
(VSX-55TXi only)
10
20
For Exterior Sction
For Heat Sink Sction
H
7
D
For Front Sction
L
For Exterior Sction
For Exterior Sction
11
VSX-55TXi only
21
E
28
NON-CONTACT SIDE CONTACT SIDE
19
T
9
27
D
30 31
For Exterior Sction
F
10
1 2
VSX-55TXi
3 4
5
6
7
8
(1) REAR PANEL SECTION parts List
Mark No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Description RS232C Assy COMPONENT Assy 7.1CH I/O Assy VIDEO Assy V-AUDIO IN Assy INPUT CONNECT Assy MAIN CONTROL Assy FM/AM TUNER Module OPTICAL IN Assy COAXIAL IN Assy Rear Panel Cord Stopper AC Power Cord Speaker Sheet Cushion Circle 16B Screw with Terminal Part No. See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2) AWX7974 See Contrast table (2) AXQ7231 AWX7978 See Contrast table (2) See Contrast table (2) CM-22C VDG1075 AAK8016 AED7052 See Contrast table (2) Mark No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Description J8 13P FFC/60V J1902 Connector Assy (8P) J5 9P FFC/60V J6 20P FFC/60V Screw Screw Screw Screw Screw Tuner Spacer 1394 Assy Screw Screw J16 22P FFC/60V J17 10P FFC/60V Screw Part No. ADD7356 ADE7085 See Contrast table (2) ADD7354 BBZ30P080FCC IBZ30P100FCC See Contrast table (2) VPZ30P100FZK See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2) IBZ30P080FCC See Contrast table (2) See Contrast table (2) ABA1208
A
B
>
(2) CONTRAST TABLE VSX-55TXi/KUXJI/CA and VSX-53TX/KUXJI/CA are constructed the same except for the following:
Mark NO 1 1 2 3 4 5 7 10 11 11 16 19 23 25 26 27 28 30 31 Symbol and Description RS232C Assy 12V TRIGGER Assy COMPONENT Assy 7.1CH I/O Assy VIDEO Assy V-AUDIO IN Assy MAIN CONTROL Assy COAXIAL IN Assy Rear Panel 55KU Rear Panel 53KU Screw with Terminal J5 9P FFC/60V Screw Screw Tuner Spacer 1394 Assy Screw J16 22P FFC/60V J17 10P FFC/60V VSX-55TXi /KUXJI/CA AWX7966 Not used AWX8293 AWX8306 AWX8311 AWX8313 AWX8285 AWX8300 ANC8192 Not used AKE-031 ADD7430 ABA7078 PMZ30P060FCC AEC7314 AWK7768 PCZ26P060FMC ADD7431 ADD7432 VSX-53TX /KUXJI/CA Not used AWX8310 AWX8295 AWX7973 AWX7962 AWX7964 AWX8289 AWX8323 Not used ANC8196 Not used ADD7353 Not used Not used Not used Not used Not used Not used Not used
E C
D
F
VSX-55TXi
5 6 7 8
11
1
2
3
4
2.4 HEAT SINK SECTION
A
18 14
A
14
5 14 9 6 14
B
13 14 1
Z
14 14
6 14 6 7 14
14 14
AA 3
2
B
AB
6
A
8
14 9
C
14 17 17 14
C
14 14 14 14
14
10 4
P
B C
6 14
7 14
6 5
16 For Rear Panel Sction 11
D
14
NON-CONTACT SIDE
12
CONTACT SIDE
16
E
F
12
1 2
VSX-55TXi
3 4
5
6
7
8
HEAT SINK SECTION parts List
Mark No. 1 2 3 4 NSP 5 6 7 NSP 8 9 10 > 11 12 NSP 13 14 15 16 17 18 Description POWER AMP-L Assy POWER AMP-C Assy POWER AMP-R Assy POWER AMP IN Assy Heat Sink 45 PCB Angle 45 Mica Sheet 45 Speed Clamp H.S Angle 45 Fan Holder 80 Fan Motor J14 24P FFC/60V Wire Saddle Screw ······ Screw Screw TH1 Thermistor Part No. AWX7984 AWX7986 AWX7985 AWX7982 ANH7152 ANG7406 AEE7047 AEC7445 ANG7404 ANG7407
B A
AXM7023 ADD7357 DEC1450 BBZ30P100FCC
>
BBZ30P300FMC ABA7085 AEX7004
C
D
E
F
VSX-55TXi
5 6 7 8
13
1
2
3
4
2.5 FRONT PANEL SECTION
A
37 12 8 11 13 9 15
B
10
3 34 14 1
U
37 37 36
38
38
A
X
31
M 32
2 37
C
B A C
33 37
37
38 16
B
35 30 39 6 4 19-2 37
C
Y
28 37 29 37
C
17
C
7 37 39
C
24 26 22 21 20
5
V
16 25 20 23 21
D
18 (VSX-55TXi ONLY) CUT (19-2) CUT (19-3 : VSX-53TX ONLY) 19-1
22
NON-CONTACT SIDE CONTACT SIDE
37
E
F
14
1 2
VSX-55TXi
3 4
5
6
7
8
(1) FRONT PANEL SECTION parts List
Mark No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 NSP 15 16 17 18 19-1 19-2 19-3 20 Description MULTI JOG Assy MIC & F.OPT IN Assy DISPLAY Assy HEADPHONE Assy VOLUME Assy FRONT IN Assy STYLING Assy Door 45 Spacer 45A Door Stay 45B Door Shaft 35 Damper Assy (200) Door Hinge L 45B Door Hinge R 45B Earth Lead Wire Earth Plate B Magnet 35 FL Sheet 45R Panel Base 45B Magnet Holder Screw Cover Cushion Circle 6B Part No. AWX7972 AWX7981 See Contrast table (2) AWX7980 AWX7971 AWX7977 ····· ANB7277 AEB7263 AAH7089 AMR7295 AXA7088 AMR7386 AMR7387 ADH7022 ANG7412 AMF7007 See Contrast table (2) AMB7803 Mark No. 21 22 23 24 25 26 27 28 29 30 NSP 31 32 33 34 35 36 37 38 39 Description Nut Rotary Knob L BK D.Sheet Window Pioneer Badge B F.Panel ····· J4 7P FFC/60V J1 32P FFC/60V Earth Plate A Speed Clamp J1901 Connector Assy (3P) J15 3P FFC/60V J2 11P FFC/60V J3 4P FFC/60V Wire Clip (A) Screw Screw Screw Part No. NK90FUC AAA7018 AAK7955 See Contrast table (2) PAN1376 See Contrast table (2) ADD7352 ADD7349 ANG7411 AEC7445 ADE7084 ADD7371 ADD7350 ADD7351 VEC1355 BPZ30P100FMC BBZ30P080FCC ABA7009
A
B
C
AED7044
(2) CONTRAST TABLE VSX-55TXi/KUXJI/CA and VSX-53TX/KUXJI/CA are constructed the same except for the following:
Mark NO 3 18 24 24 26 26 Symbol and Description DISPLAY Assy FL Sheet 45R Window 55 Window 53R F.Panel 55BKU F.Panel 53BKU VSX-55TXi /KUXJI/CA AWX8315 AAK7957 AAK8150 Not used ANB7312 Not used VSX-53TX /KUXJI/CA AWX7983 Not used Not used AAK8155 Not used ANB7316
D
E
F
VSX-55TXi
5 6 7 8
15
1
2
3
4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
A
3.1.1 AUDIO BLOCK DIAGRAM
IC303 IS63LV61024-12T SRAM IC302 IS61LV6416-12T SRAM
D+ DUSB
COAXIAL IN ASSY
DIGITAL USB AUDIO
1 2
Resceiver
25 24
6 2
6 2
OUT2
IC201 AK4114VQ DIR & DIT
IN1 IN2 IN3 IN4 IN6 RX0
D 1/2
OPTICAL IN ASSY JA1701
B
IN1 (TV/SAT) IN2 (CD-R/TAPE1) JA1702
JA1801 IN 3 (CD-R/TAPE1) IN 4 (CD) 2 4
DIN1 DIN2
1 13 IC1881
4 10
14 16
IN2 IN1
14 16
2 4
DIN1 TC74HCU04F DIN2
12 10
IN3 IN4
12
DAUX
44 46 48 1 5 42 28
15 16 25
TX0 TX1 SDTO
4 11 9
SDI1
FL SL SBL C
IC451 IS61LV6416-12T SRAM
(1/2)(20P) (1/2)(20P) IN6
IC471 IS63LV61024-12T PPROM 7 5 4 6
FL SL SBL C
H 1/2
VSX-55TXi JA1681 ONLY
IC1681 PCM2902EG
CN1802 CN101
S DSP ASSY
10 11 48 138
10
5 7 6
10
IC701 TC74VHC157FT Selector
CN1701 CN1801
(1/2)(9P) (1/2)(9P)
REGULATOR CN2412 (9P) ASSY
OPT
AC
IC301 DSPC56367PV150 DSP1 Decoder
IC401 DSPC56367PV150 DSP2 PPP
9
2
CN2408
(17P)
CN1653
(17P) OPT
CN1651 CN102
(28P) (28P)
8
2
16
18
OPT
18
IC101 AK5380VT AD 20 16 8 12 10 4
ALOUT
CN601
(21P)
AK
BN201 ANTENNA FM AM
FM/AM TUNER MODULE
CN201 CN601
(13P) (13P)
O
TUNER TXL CD-R CD DVD/LD TV/SAT V1/IN
DSP CONNECTION ASSY
SBL
SW
SL
FL
C
20 16 8 12 10 4
CN301
(21P)
IC201 1 BA1451F AM/FM IF 11 20 + MPX IC
IC701 TC94A07F 4 3 2 5 7 8 IC201 TC9164AF Selector IC202 (1/2) NJM4558MD MR Buffer 3 6 1 2
MR L FL
7
TXL
7
7
5 4
C
IC103 TC9163AF 6
ALOUT FL C SW SBL FL C SW
IC703 TC94A07F
SL SBL C SW
4 3 18 11 8 2 19 10 7 9 11
5 9 17 12
7
5 4
JA113 (1/2) CD-R/ L TAPE1 R JA112 (1/2) MD/ L TAPE2 R JA111 L CD
TUNER CD-R PLAY MD PLAY CD LINE/PHONE V1/IN V2/IN TV/SAT DVD/LD FVIDEO
1 41 42 43 44 2 3 4 5 6 8 9
IC101 TC9274F-019 Selector
CD-R REC MD REC V1/OUT V2/OUT OUT
IC704 TC94A07F
SBL
7
5 4
10 11 14
IC702 TC94A07F
C SL SW
IN
IC102 (2/2) UPC4570G2 5 7 6
SBL SL SL
7
5 4 20 21
10
18
D
R
PHONO/ L LINE R
OPT
IC104 TC9215AF
CD-R REC MD REC
6 8
V1L
5
V2L
4
TVL
3
DVDL
1
V2/OUT
2
V1/OUT
CN101
(15P)
CN201
(7P)
1
MR L
11 9 10 2
SW SL FL C
4
SBL
CN102
(13P)
CN3
(9P)
CN501 17 6 (32P)
FOPT
10 11 12 13 15 14
CN1401
(15P)
CN1402
(7P)
7
3
5
4 12 10
CN1403
(13P)
M
DIGITAL IN (FRONT)
MIC & F.OPT IN ASSY
CN1601
JA1601
(4P)
CN3006 17 6 (32P)
4
FV-L
MR L V1/OUT V2/OUT
1
FOPT
E
CN3004
(4P)
VIDEO INPUT AUDIO (FRONT)
JA1501 L R 3
(7P) FV-L
CN1501 CN3005
(7P)
3 CN1301 IC1301 (1/2) UPC4570G2 3 L FRONT 2 R MULTI CH IN L SURROUND R CN1302 CENTER SUB WOOFER SURROUND L BACK R 3 2 3 IC1302 (1/2) 2 UPC4570G2 1
DVDL
5
7
6
CN1204 12 13 14 15 (1/2)(17P)
CN1205 (2/3)
CN1201 (1/2)
CN1203 (1/2)
TVL
V1L
V2L
C
FRONT IN ASSY
U 1/2 DISPLAY ASSY
1
F
3 2
B 1/2 V-AUDIO IN ASSY
16
1
IC1303 (1/2) 1 UPC4570G2 IC1303 (2/2) 5 UPC4570G2 7 6 1 IC1304 (1/2) UPC4570G2
VCR1 L IN R
VCR2 L IN R
TV/SAT L IN R
DVD/LD L IN R
VSX-55TXi
2 3 4
SBL
3
12 13 14 15 CN1405 (1/2)(17P)
3
FL
5
SL
7
C
6
SW
9
CN1406
(9P)
9 CN1307 (9P)
5
6
7
8
A
IC601 (1/2) IC501 NJM4565MD AK4383VT LPF Amp. 2 15 1 3 16 3 IC541 AK4383VT
FL SL SBL C
IC681 (1/2) NJM4565MD MIX Amp. 2 1 2 3
H 2/2
FL (2/2)(20P)
D 2/2
CN1701
(2/2)(9P)
COAXIAL IN OPTICAL IN ASSY ASSY
CN101
4
Y
HEADPHONE ASSY
PHONES 2
3 2 3 2 3 6 5
IC561 AK4383VT 3 11 12 15 16
4
6
6 JA1704
OUT1
HP L
15 16
IC641 (1/2) NJM4565MD 1LPF Amp. SL
CN1802 CN1801
(2/2)(20P) (2/2)(9P)
JA1703
CN1951
(3P)
OUT1
DOUT1
IC661 (1/2) 1 NJM4565MD LPF Amp. IC621 (1/2) 1 NJM4565MD LPF Amp. IC621 (2/2) 7 NJM4565MD LPF Amp.
SBL
2
C
OUT2
2
8
DOUT2
2 OUT2 5
CN3007
(3P)
8
U 2/2
DISPLAY ASSY
B
CN701
(22P)
CN401
(22P)
CN3001
(11P)
IC521 AK4383VT
3 13 14
SW
T
1394 ASSY
HP L
The details please refer to next page.
CN702
(10P)
CN402
(10P)
Refer to "3.1.3 1394 BLOCK DIAGRAM".
7
CN2002
(11P)
AJ
PRIMARY ASSY
L
MAIN CONTROL ASSY
CN801
(24P)
P
FL SL SBL C
POWER AMP IN ASSY
CN4001
(24P) (17P)
Z POWER AMP-L ASSY
13 15 17 IC4101 PA9009A Power Amp. 1 IC4201 PA9009A Power Amp. 1 IC4301 PA9009A Power Amp. 1
1 CN2004 (5P)
HP L
1
CN4613
(5P)
IC711 (2/2) UPC4570G2 5 7 6 IC713 (2/2) UPC4570G2 5 7 6 IC713 (2/2) UPC4570G2 5 7 6 IC712 UPC4570G2 5 7 6 3 1 2
CN4003 CN4401
(17P)
CN4601
3
FL (2P)
13 7 3 9
12 18 22 16
5 3 1
FL SL SBL
4 3 4 3 4
Y2
SL
1
(2P)
Y3
SBL
2 1
CN4002
Y3 CN4602
(2P)
12
C
RY4603 CN4612 L SURROUND R BACK RY4604 CENTER
(19P)
1
CN4402
(19P)
JA113 (2/2) L R JA112 (2/2) L MD/ TAPE2 OUT CD-R/ TAPE1 OUT
8 10
(10P)
CN4453
(10P) C
10
IC4451 PA9009A Power Amp. 1
3 4
C
AD
SP/PS ASSY
CN4454
Y1
AA
POWER AMP-R ASSY
CD-R REC MD REC
AB
POWER AMP-C ASSY
SPEAKERS
CN4603
RY4601 CN4611 L FRONT R RY4602 L SURROUND R
C
D
R
CN103 2 4 6 1 8 (9P)
SBL SW SL FL C
CN1404 8 6 4 9 2 (9P)
B 2/2 V-AUDIO IN ASSY
5 7 6 IC1541 UPC4570G2 SW Amp. IC401 M62429FP MR Volume 1 2
CN1405
(2/2)(17P)
CN1204
(2/2)(17P)
CN1205 (1/3) L R MULTI-ROOM & SOURCE OUT
MR L V1/OUT V2/OUT
3 16 17
MRL V1OL V2OL
3 16 17
CN1408 4 6 8 1 2 (9P)
SBL SW SL FL C
E
CN1303
INPUT CONNECT ASSY
CN1205 (3/3) L R VCR1 OUT
E
CN1308 6 4 2 9 8 (9P)
A 7.1 CH I/O ASSY
PRE OUT FRONT
CN1201 (2/2) L R VCR2 OUT
SUB WOOFER CENTER L R CN1304 L R L R SURROUND SURROUND BACK
F
VSX-55TXi
5 6 7 8
17
1
2
3
4
3.1.2 DSP BLOCK DIAGRAM
A
L
CN301
S
IC101 AK5380VT AD
DSP ASSY
B
H
CN1802
IC201 AK4114VQ DIR & DIT
O
CN651
C
T
CN401
IC701 TC74VHC157FT SELECTOR
D
IC302 IS61LV6416-12T SRAM
E
IC303 IS63LV1024-12T SRAM
IC301 DSPC56367PV150 DECODER DSP1
IC705 TC7SH04FU IC706 INVERTER TC7SH04FU INVERTER
IC305 TC7W125FU 3 STATE BUFFER
T
CN402
F
18
1 2
VSX-55TXi
3 4
5
6
7
8
A
IC501 AK4383VT
B
IC521 AK4383VT IC503 TC7SH04FU BUFFER
C
IC451 IS61LV6416-12T SRAM
IC471 IS63LV1024-12T PPROM
IC541 AK4383VT
L
D
IC561 AK4382AVT IC401 DSPC56367PV150 PPP DSP2
E
CN301
F
VSX-55TXi
5 6 7 8
19
F
E
B
A
D
C
20
T
XI
1394 ASSY
CLK48K
PLLVDD
TPA0N MLPCM_D0
TPA0N
1 2 3 4
60958OUT SDATA0O SDATA1O SDATA2O SDATA3O AMCKO BCKO LRCKO MLPCMA
TPA0P MLPCM_D1
11 5 17 IE_FDT 18 IE_CDT IC409 TC7SZ126FU 2 4 19 IE_SDT 9 IE_MCK 14 IE_BCK 16 IE_LRCK 4 3 9 8 7
MLPCM_LRCK MLPCM_BCK MCLK MLPCM_DATA2 MLPCM_DATA1
MLPCM_D0
CLK48KI
CONT44
1 100 SDATA1I 101 102 SDATA3I 99 LRCKI 98 BCKI 72 SACDD0I 75 SACDD1I 76 SACDD2I 77 SACDD3I 78 SACDD4I 79 SACDD5I 80 SACDDAI V+5D 70 SACDMKI 22 23 24 25 28 29 20 19 18 17 16 22
SACD0O SACD1O SACD2O SACD3O SACD4O SACD5O SAPCMD1I SAPCMD2I SAPCMD3I SDATA2I MLPCM_DATA0
25 26 29 30 14 6 20 IE_BDT 12 13 10 9 158 159 163 164 165 166 167 153
SACD_MCK SACD_DA SACD_D5 SACD_D4 SACD_D3 SACD_D2 SACD_D1 SACD_D0 MLPCM_BCLK MLPCM_LRCK MLPCM_D2 MLPCM_D1 MLPCM_DA
TPA0P KLPCM_D2 MLPCM_LRCK MLPCM_BCLK HSDI1_D0 HSDI1_D1 HSDI1_D2 HSDI1_D3 HSDI1_D4 HSDI1_D5 HSDI1_D6 HSDI1_CLK
CLK44K
3.1.3 1394 BLOCK DIAGRAM
SACDMCKO
SAPCMLRCKI
SAPCMBCKI
SACD_MCLK
SACD_DATA0
SACD_DATA1
SACD_DATA2
SACD_DATA3
SACD_DATA4
SACD_DATA5
SAPCM_DATA1
SAPCM_DATA2
IC102 AYW7033 4M Flash ROM
IC302 K4S641632F-TC75 64M SDRAM
SAPCM_DATA3
SAPCM_LRCK
SAPCM_BCK
DSIFL
DSIFR
DSICT
DSISL
DSISR
F2SLR
DSISW
DSBCKF
F2FLREX1
F2CSWEX2
F2LRCK
F2BCK
1
X302 22.5792MHz
1
X201 24.576MHz
JA201
52
60958OUT
CN401
39 40 45 174 2
MLPCM_DATAA 60958OUT
(6P)
51 82 60958IN 21 1394_SPDIF 103 SDATA0I
60958
44
(22P) (1/2)
TPB0N
TPB0N
TPB0P
TPB0P
iLINK
JA202
S
CN701
(6P)
TPB1N
TPB1N
TPB1P
2
TPB1P
TPA1N
TPA1N
IC301 PD8112A Flow Control IC (Gate Array)
1 2 3 4
TPA1P
33 34 36 37
TPA1P
2
IC1 NJM2391DL1-33 3.3V REG. IC405 TC74VHC541FT
SACD_DATA0 SACD_DATA1 SACD_DATA2 SACD_DATA3 SACD_DATA4 SACD_DATA5 SACD_MCLK A2 A3 A4 A5 A6 A7 A1 B2 B3 B4 B5 B6 B7 B1
2
IC201 TSB43CA42GGW iceLynx-Micro (Mercury)
V+3D
VSX-55TXi
3 4 5 6 7 8 2 63 64 65 66 67 68 62 47 46 45 44 43 IC401 SM5816AF DSD Converter (SACD LPCM)
CN402
(10P) DSD1
3
3
DSD2 DSD3 DSD4 DSD5 DSD6 DSDCLK
CN101
S
CN702
(6P)
1
TXD2
33 TXD0
RXD2
34 RXD0
RS232C 2 (For Flash) 3
DTR2
36 RTS0
IC101 PD5787A Host CPU
17 16 15 14 13 12 18
4 5 6 7 8 9 2
4
CTS2
32 CTS0
CN401
(22P) (2/2)
4
4
S
CN701
5
6
7
8
3.1.4 POWER AMP BLOCK DIAGRAM
A
B
C
D
E
F
VSX-55TXi
5 6 7 8
21
1
2
3
4
3.1.5 VIDEO BLOCK DIAGRAM
A
JA1001 Y COMPONENT VIDEO (DVD/LD) IN PB PR 1 Y (TV/SAT) IN PB PR JA1002 3 5 4 3 2 2 15 5 6 13 12 14 3 2 IC1002 (1/2) TK15450M 1 Y Amp. IC1003 (2/2) TK15450M 7 Cb Amp. IC1003 (1/2) TK15450M 1 Cr Amp. IC1052 TC74HC4053 Selector 15 1 IC1051 PDC084A OSD 13
I
COMPONENT ASSY
JA1003 Y PB PR MONITOR OUT (COMPONENT VIDEO)
IC101 TC74HC4053AF Selector
CN1001
(9P) (9P)
7 3
OSD
B
CN2405
(15P) OSD OSDON FV-Y FV-C FV
CN2404
3 4 10 9 11
AC
REGULATOR ASSY
OSDON
4
6 6
5 CN2412 (9P) 5
CN2413
(19P)
C FRONT IN U DISPLAY
ASSY ASSY
12 14 13
(32P)
4
CN3
(9P)
CN502
(19P)
VIDEO INPUT (FRONT)
C
JA1501 VIDEO S VIDEO 5 6 7
(7P) FV FV-C FV-Y
3 2 1
(7P)
FV FV-C FV-Y
12 14 13
(32P)
IC501 PD5770A8 µ-COM
CN1501 CN3005
CN3006 CN501
L
MAIN CONTROL ASSY
IN1 IN2 IN3
12 3 1
IC902 NJM2279M Multi-Room Selector 10
MULTI-ROOM & SOURCE JA905 MONITOR OUT IC903 TC4W53FU OSD Selector 7 5
OSDON
D
CN901
(15P)
IC933 BU4053BCF OSD Selector 12
OSD
13 12 5 7 6 JA901 (1/2) VIDEO VCR1/ DVR S VIDEO JA902 (1/2) VIDEO VCR2 S VIDEO JA903 (1/2) VIDEO DVD/ LD S VIDEO
OSD OSDON FV FV-C FV-Y OSDON
Q901
13 5 11
14 4
1 6
OSD
IC901 NJM2296M Composite Selector
IN1 IN2 IN3 IN4 IN5
13 9 7 5 3 IC931 NJM2296M Y Selector 1 15 11
OUT1 OUT2 OUT3 V
JA904 VIDEO MONITOR OUT
Q931 Q932
Y C
S VIDEO
E
IN1 IN2 IN3 IN4 IN5
JA901 (2/2)
V OUT1 OUT2 OUT3 Y C
13 9 7 5 3 1 15 11
VIDEO VCR2 OUT
S VIDEO JA902 (2/2)
IN
IN1 IN2 IN3
V
14 16 19 1 22 IC932 NJM2596M C Selector 10 8 5
OUT1 OUT2 OUT3 Y C
VIDEO VCR1/DVR OUT
S VIDEO
VIDEO
IN4 IN5
F
TV/ SAT S VIDEO
K VIDEO ASSY
VSX-55TXi
3 4
22
1 2
5
6
7
8
A
B
C
D
E
F
VSX-55TXi
5 6 7 8
23
F
E
B
A
D
C
24
V
T T 1/2, T 2/2
VSX-55TXi ONLY VOLUME ASSY (AWX7971) DSP ASSY (AWX8249)
S S 1/2, S 2/2
3.2 OVERALL WIRING DIAGRAM
1
1
1394 ASSY (AWK7768)
D OPTICAL IN ASSY (AWX7978) O
DSP CONNECTION ASSY (VSX-55TXi : AWX8299) (VSX-53TX : AWX8024)
VSX-55TXi : ADD7430 VSX-53TX : ADD7353
U
H COAXIAL IN::ASSY (VSX-55TXi AWX8300) (VSX-53TX AWX8323) N L L 1/3- L 3/3
MAIN CONTROL ASSY (VSX-55TXi : AWX8285) (VSX-53TX : AWX8289)
DISPLAY ASSY (VSX-55TXi : AWX8315) (VSX-53TX : AWX7983)
2
2
AK E AC
REGULATOR ASSY (VSX-55TXi : AWX8303) (VSX-53TX : AWX7967)
FM/AM TUNER MODULE (AXQ7231)
F.OPT IN M MIC & (AWX7981) ASSY
MIC AMP ASSY (AWX8004)
VSX-55TXi
INPUT CONNECT ASSY (AWX7974)
K VIDEO ASSYAWX7962) (VSX-55TXi : AWX8311) (VSX-53TX :
C FRONT IN ASSY (AWX7977)
3
3
B V-AUDIO IN::ASSY (VSX-55TXi AWX8313) (VSX-53TX AWX7964) AB AA
POWER AMP-R ASSY (AWX7985)
P
POWER AMP IN ASSY (AWX7982)
Y HEADPHONE ASSY (AWX7980)
POWER AMP-C ASSY (AWX7986)
4
4
A
7.1CH I/O ASSY (VSX-55TXi : AWX8306) (VSX-53TX : AWX7973)
5
6
7
8
Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".
A
X
MULTI JOG ASSY (AWX7972)
FAN MOTOR (FRONT) AXM7023
AH R
FAN DRIVE ASSY (AWX7976) TRANS 2-2 ASSY (AWX7970)
AI
TRANS 1 ASSY (AWX7969)
B
T1 POWER TRANSFORMER (ATS7328)
POWER AMP-L ASSY (AWX7984)
FAN CONNECTION ASSY (AWX8005)
AF
FU4, FU5 : REK1114 (3.15A/125V)
TRANS 2-1 ASSY (AWX8326)
Z
Q
AE
DIODE ASSY (AWX8017)
D
AD
SP/PS ASSY (VSX-55TXi : AWX8307) (VSX-53TX : AWX7975)
E
AJ
COMPONENT ASSY (VSX-55TXi : AWX8293) (VSX-53TX : AWX8295) PRIMARY ASSY (AWX7968) TRIGGER (AWX8310) G 12VVSX-53TX)ASSY (for (AWX7966) F RS232C ASSY (for VSX-55TXi)
FU1 : VEK1029 (10A/125V)
AG
VH TR ASSY (AWX8018)
THERMISTOR AEX7004
C
I
F
AC IN POWER CORD : VDG1075
VSX-55TXi
5 6 7 8
25
1
2
3
4
3.3 7.1 CH I/O, V-AUDIO, FRONT IN and OPTICAL IN ASSYS
A
CN1301-CN1304 ; VSX-55TXi : AKB7075 VSX-53TX : AKB7015
A 7.1 CH I/O ASSY
(F)
(VSX-55TXi : AWX8306) (VSX-53TX : AWX7973)
(F) (F) (F)
L FRONT R
E
(S) (S) (S) (F)
CN1407
B
L SURROUND R MULTI CH IN
(S)
(F) (S) (C) (C) (C) (SB) (SB) (C)
E
CN1406
CENTER
C
SUB WOOFER
(SB)
(SB) (SB)
L SURROUND BACK R
D
SUB WOOFER CENTER
(C)
Preout Mute
(C) (F)
L FRONT
E
(F)
R PRE OUT
(C)
(F)
L SURROUND R
(S)
(S)
(S) (SB)
E
CN1408
(SB)
L
F
(SB)
SURROUND BACK R
A
26
1 2
: The power supply is shown with the marked box.
VSX-55TXi
3 4
5
6
7
8
MULTI-ROOM & SOURCE OUT
MR Mute
(MR)
(MR)
B
(MR)
A
L
R
V-AUDIO ASSY (VSX-55TXi : AWX8313) (VSX-53TX : AWX7964)
L IN R VCR1 L
(MR) (MR) (DVD)
: AUDIO SIGNAL ROUTE (Lch) : AUDIO SIGNAL ROUTE (MULTI-ROOM Lch) : AUDIO SIGNAL ROUTE (DVD Lch)
(F)
: AUDIO SIGNAL ROUTE (FRONT Lch)
(S)
B
: AUDIO SIGNAL ROUTE (SURROUND Lch)
(SB)
OUT R L IN R VCR2 L OUT R
: AUDIO SIGNAL ROUTE (SURROUND BACK Lch)
(C)
: AUDIO SIGNAL ROUTE (CENTER ch)
(D)
: AUDIO SIGNAL ROUTE (DIGITAL)
(MR)
E
CN1405
(DVD)
C
L TV/SAT IN R
(DVD) (DVD)
L DVD/LD IN R
CN1201-CN1203 ; VSX-55TXi : AKB7075 VSX-53TX : AKB7015 CN1205 ; VSX-55TXi : AKB7162 VSX-53TX : AKB7009
D OPTICAL IN ASSY (AWX7978)
IN 1 (TV/SAT)
(D)
D
(D)
L AUDIO VIDEO INPUT (FRONT) R PCM/ 2DIGITAL/ DTS/MPEG
(D)
H CN1801
27
8
IN 2 (CD-R/TAPE1)
(D)
C FRONT IN ASSY (AWX7977)
E
OUT 1
CN3005
(D)
VIDEO
U
OUT 2
S VIDEO
F
(D)
B C D
VSX-55TXi
5 6 7
1
2
3
4
3.4 INPUT CONNECT, RS232C and 12V TRIGGER ASSYS
A
E
(MR)
INPUT CONNECT ASSY (AWX7974)
L 1/3
CN101
B
(DVD) (DVD)
CN1204
B
(MR)
: AUDIO SIGNAL ROUTE (Lch)
MR Volume
C
(MR)
: AUDIO SIGNAL ROUTE (MULTI-ROOM Lch)
(DVD)
: AUDIO SIGNAL ROUTE (DVD Lch)
(F)
: AUDIO SIGNAL ROUTE (FRONT Lch)
(MR) (MR) (MR) (S)
: AUDIO SIGNAL ROUTE (SURROUND Lch)
(SB)
: AUDIO SIGNAL ROUTE (SURROUND BACK Lch)
(C)
L 1/3 CN201
: AUDIO SIGNAL ROUTE (CENTER ch)
(MR) (MR)
(F)
L 1/3 CN102
D
(F) (C) (S) (C) (SB) (SB) (S)
A
CN1307
A L 2/3 CN103
E
(SB) (SB) (S) (F) (C) (SB) (S) (F) (C) (C) (S) (F)
CN1306
A
CN1308
F
SW Amp.
E
28
1 2
VSX-55TXi
3 4
5
6
7
8
VSX-55TXi ONLY
F
RS232C ASSY (AWX7966)
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 491.125 MFD, BY LITTELFUSE INK. FOR IC1932.
A
12V TRIGGER
(DC OUT 12V/100mA MAX)
B
MULTI-ROOM & SOURCE REMOTE IN
RS-232C Transceiver
L 3/3 CN551
C
RS-232C
AC
VSX-53TX ONLY
CN2403
G 12V TRIGGER ASSY (AWX8310)
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 491.125 MFD, BY LITTELFUSE INK. FOR IC1932.
D
12V TRIGGER
(DC OUT 12V/100mA MAX)
E
L 3/3 CN551
MULTI-ROOM & SOURCE REMOTE IN
AC
CN2403
F
F G
VSX-55TXi
5 6 7 8
29
1
2
3
4
3.5 COAXIAL IN ASSY
A
H COAXIAL IN: ASSY (VSX-55TXi AWX8300)
(VSX-53TX : AWX8323)
B
C
JA1802
(1/2) VSX-55TXi : AKB7148 VSX-53TX : AKB7131
IN 3 (CD-R/TAPE1)
D
IN 4 (CD) JA1802
(2/2) VSX-55TXi : AKB7148 VSX-53TX : AKB7131
CN1701
E
(D)
(D)
D
(UD) (D)
(UD)
(UD)
(UD)
(D)
(UD)
F
H
30
1
S 1/2 CN101
2
AC
VSX-55TXi
CN2406
3 4
5
6
7
8
(D)
: AUDIO SIGNAL ROUTE (DIGITAL)
(UD)
A
: AUDIO SIGNAL ROUTE (USB DIGITAL)
VSX-55TXi ONLY
USB Receiver DIGITAL USB AUDIO
(UD) (UD) (UD) (UD) (UD)
B
(UD)
C
D
(UD)
E
(UD)
(UD)
(UD)
(UD)
F
: The power supply is shown with the marked box.
VSX-55TXi
5 6 7 8
H
31
1
2
3
4
3.6 COMPONENT ASSY
A
JA1001, JA1002 ; VSX-55TXi : VKB1151 (Y) VSX-53TX : VKB1150
Y (DVD/LD) IN
(Y)
Component Signal Selector
(Y) (PB)
(Y) (Y) (Y) (PB)
(Y) (PB)
PB
COMPONENT VIDEO
PR
(PR)
(PB) (PB) (PB) (PR) (PB) (PR) (PR) (PR)
(PR)
B
Y (TV/SAT) IN
(Y)
PB
(PB)
PR
(PR)
C
I
COMPONENT ASSY (VSX-55TXi : AWX8293) (VSX-53TX : AWX8295)
AC
CN2404
D
E
F
I
32
1 2
VSX-55TXi
3 4
5
6
7
8
: The power supply is shown with the marked box.
A
(Y) (PB)
(Y) (PB) (PR)
JA1003 ; VSX-55TXi : VKB1151 VSX-53TX : VKB1150
(Y)
(PR) (PR) (PB)
PB
MONITOR OUT (COMPONENT VIDEO)
Y
B
(PR)
PR
C
(Y)
: VIDEO SIGNAL ROUTE (Y)
(PB)
: VIDEO SIGNAL ROUTE (PB)
(PR)
: VIDEO SIGNAL ROUTE (PR)
D
E
F
I
VSX-55TXi
5 6 7 8
33
1
2
3
4
3.7 VIDEO ASSY
A
K VIDEO ASSY
VIDEO VCR1/DVR
(VSX-55TXi : AWX8311) (VSX-53TX : AWX7962)
JA901 ; VSX-55TXi : AKB7160 VSX-53TX : AKB7147
S VIDEO
B
IN
JA902 ; VSX-55TXi : AKB7160 VSX-53TX : AKB7147
VIDEO VCR2 S VIDEO
C
JA903 ; VSX-55TXi : AKB7160 VSX-53TX : AKB7147 (SY) (SY)
VIDEO DVD/LD IN
(SC) (SY) (SY)
(SY)
S VIDEO
D
(SC)
(SC) (SC)
VIDEO TV/SAT IN
E
(SC) (SC)
S VIDEO
F
K
34
1 2
AC
VSX-55TXi
CN2405
3 4
5
6
7
8
: VIDEO SIGNAL ROUTE
(MR) (MR) (MR)
A
: VIDEO SIGNAL ROUTE (MULTI-ROOM)
(SY)
: VIDEO SIGNAL ROUTE (S VIDEO Y ch)
(SC)
: VIDEO SIGNAL ROUTE (S VIDEO C ch)
JA905 ; VSX-55TXi : VKB1156 VSX-53TX : VKB1122 (MR) (MR)
Composite Buffer
MULTI-ROOM & SOURCE MONITOR OUT
B
JA904 ; VSX-55TXi : AKB7159 VSX-53TX : AKB7146
VIDEO MONITOR OUT S VIDEO Y Buffer C Buffer
(SC) (SY) (SY) (SC) (SC)
(SY) (SY)
(SY) (SC)
C
JA901 ; VSX-55TXi : AKB7160 VSX-53TX : AKB7147
(SY)
D
(SC)
VIDEO DC Buffer VCR2 OUT
(SC)
S VIDEO
(SC)
(SC)
JA902 ; VSX-55TXi : AKB7160 VSX-53TX : AKB7147
E
VIDEO VCR1/DVR OUT S VIDEO
F
: The power supply is shown with the marked box.
VSX-55TXi
5 6 7 8
K
35
1
2
3
4
3.8 MAIN CONTROL ASSY (1/3)
A
L 2/3, 3/3
L 3/3
L 1/3 MAIN CONTROL ASSY (VSX-55TXi : AWX8285)
(VSX-53TX : AWX8289)
IN CONTROL OUT
B
(TX)
(TX)
JA113 ; VSX-55TXi : VKB1133 VSX-53TX : VKB1132
CD-R L TAPE1 IN
C
(CD-R)
(CD-R) (CD-R) (TX)
(DVD)
(CD-R)
(TX)
PLAY R
(TX)
REC R
(CD-R)
CD-R L TAPE1 OUT
MD L TAPE2 IN
D
(CD-R)
Main Function
PLAY R
MD L TAPE2 OUT REC R
JA111, JA112 ; VSX-55TXi : VKB1133 VSX-53TX : VKB1132
L CD IN R
E
L PHONE LINE IN
R
L 3/3
L 1/3
36
1
E
2
CN1401
VSX-55TXi
3 4
L 3/3
F
(DVD)
(DVD)
(TX)
5
6
7
8
A
E
CN1403
S 2/2 CN601
(SB)
(S) (C) (F)
(SB)
(S)
(C)
(F)
B
(SB)
VSX-55TXi ONLY Mode Selector
(F)
(SB)
(F)
C
(C) (C)
(C)
Sub Function
Input Buffer / Phono Flat Gain
R135, R136 VSX-55TXi : 9.1k VSX-53TX : 0
(S)
(S)
D
L 2/3
(MR) (MR)
Buffer for MR
(MR)
E
: AUDIO SIGNAL ROUTE (Lch)
(CD-R)
: AUDIO SIGNAL ROUTE (CD-R Lch)
(TX)
: AUDIO SIGNAL ROUTE (TUNER Lch)
(MR)
: AUDIO SIGNAL ROUTE (MULTI-ROOM Lch)
(DVD)
E
CN1402
: AUDIO SIGNAL ROUTE (DVD Lch)
(F)
: AUDIO SIGNAL ROUTE (FRONT Lch)
(S)
: AUDIO SIGNAL ROUTE (SURROUND Lch)
(SB)
: AUDIO SIGNAL ROUTE (SURROUND BACK Lch)
(C)
F
: AUDIO SIGNAL ROUTE (CENTER ch)
L 1/3
VSX-55TXi
5 6 7 8
37
1
2
3
4
3.9 MAIN CONTROL ASSY (2/3)
A
L 2/3 MAIN CONTROL ASSY (VSX-55TXi : AWX8285)
(VSX-53TX : AWX8289)
(F) (C)
(F)
(F)
(C) (C) (C)
(C)
C
(F)
L 1/3
C
(C)
(C)
(C) (C)
B
(F)
(C)
SW
L 1/3, 3/3
D
(SB)
Preamp. & Main (Master) Volume
(SB) (SB) (SB) (S) (SB) (SB)
L 1/3
(S) (SB)
SBL
(SB) (SB)
E
(S)
F
L 2/3
38
1 2
(S)
(S)
VSX-55TXi
3 4
(S)
SBR
(S)
5
6
7
8
(F)
: AUDIO SIGNAL ROUTE (FRONT Lch)
(S) (F) (SB)
A
: AUDIO SIGNAL ROUTE (SURROUND Lch) : AUDIO SIGNAL ROUTE (SURROUND BACK Lch)
(C) (F) (F) (F) (F) (F) (F)
: AUDIO SIGNAL ROUTE (CENTER ch)
(F)
FL
(F)
B
L 3/3
FR
C
(SB)
Preamp. & Main (Master) Volume
(S)
(F)
CN4001
(C)
(S) (S) (S) (S)
SL
(S)
(S)
(S) (S)
(S) (SB)
SR
E
CN1404
(C) (F)
P
D
E
F
L 2/3
VSX-55TXi
5 6 7 8
39
1
2
3
4
3.10 MAIN CONTROL ASSY (3/3)
A
L 3/3 MAIN CONTROL ASSY (VSX-55TXi : AWX8285)
(VSX-53TX : AWX8289)
CN201
AK
(TX)
10V Reg.
B
(TX)
L 1/3
CN1902 (VSX-55TXi) CN1902 (VSX-53TX)
VSX-53TX ONLY
C
F G L 1/3 L 1/3, 2/3
Reset IC501 PD5948A8 (VSX-55TXi) PD5899A (VSX-53TX) Main Control U-com.
D
L 2/3
Port Expander
E
F
L 3/3
40
1 2
AC
VSX-55TXi
CN2412
3
AC
CN2415
AC
CN2414
4
5
6
7
8
U
CN3006
(TX)
: AUDIO SIGNAL ROUTE (TUNER Lch)
A
B
C
VSX-55TXi ONLY VSX-53TX ONLY
AC
CN2411
D
AC
E
VSX-55TXi ONLY
Buffer
For Flash
CN2410
Level Shift 3.3V 5V
L 1/3
F
: The power supply is shown with the marked box.
VSX-55TXi
AC
5
CN2413
6 7 8
L 3/3
41
1
2
3
4
3.11 MIC & F.OPT IN, MIC AMP and DSP CONNECTION ASSYS
A
VIDEO INPUT (FRONT) DIGITAL IN
M MIC & F.OPT IN ASSY (AWX7981)
U
B
CN3004 CN2409
C
D
N MIC AMP ASSY (AWX8004)
Mic. Amp.
U
3008
E
F
M N O
42
1 2
VSX-55TXi
3 4
AC
CN2407
AC
CN2408
AC
SETUP MIC
5
6
7
8
A
O DSP CONNECTION ASSY
(VSX-55TXi : AWX8299) (VSX-53TX : AWX8024)
B
VSX-55TXi ONLY
C
VSX-53TX ONLY
Level Shift 5V 3.3V
S 1/2 CN102
D E F
VSX-55TXi ONLY
: The power supply is shown with the marked box.
VSX-55TXi
5 6 7 8
O
43
1
2
3
4
3.12 POWER AMP IN, FAN CONNECTION and FAN DRIVE ASSYS
A
(F)
: AUDIO SIGNAL ROUTE (FRONT Lch)
(S)
: AUDIO SIGNAL ROUTE (SURROUND Lch)
(SB)
: AUDIO SIGNAL ROUTE (SURROUND BACK Lch)
(C)
: AUDIO SIGNAL ROUTE (CENTER ch)
B
P
POWER AMP IN ASSY (AWX7982)
C
(C)
(C)
AA
CN4402
(SB) (C)
Overload DET.
(S)
D
L 2/3 CN801
(C)
(F) (S)
(SB)
E
(F)
(F) (S) (SB) (SB) (S) (F)
F
P
44
1 2
Z
VSX-55TXi
CN4401
3 4
FAN MOTOR (FRONT)
5
6
7
8
A
Q FAN CONNECTION ASSY (AWX8005)
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 491.200 MFD, BY LITTELFUSE INK. FOR IC4701 AND IC4702.
AF
2201
B
Non Connection
C
R FAN DRIVE ASSY (AWX7976)
D
E
F
Q R
VSX-55TXi
5 6 7 8
45
1
2
3
4
3.13 DSP ASSY (1/2)
A
S 1/2 DSP ASSY (AWX8249)
(SD) (D) (D)
H
CN1802
(UD) (D) (UD) (SD)
(UD)
B
(SD)
(UD)
(SD)
(F) (S) (SB) (C) (SD) (SD) (SD)
C
T 2/2 CN401
(SD) (SD)
D
E
F
S 1/2
46
1 2
T 2/2 CN402
O
CN1651
3 4
VSX-55TXi
(SD)
5
6
7
8
: The power supply is shown with the marked box.
A
S 2/2
(F)(S)(SB)(C)
B
(F) (S) (SB) (C) (SD)
(SD)
C
(SD)
D
E
S 2/2
: AUDIO SIGNAL ROUTE (Lch)
(F)
: AUDIO SIGNAL ROUTE (FRONT Lch)
(S)
: AUDIO SIGNAL ROUTE (SURROUND Lch)
(SB)
: AUDIO SIGNAL ROUTE (SURROUND BACK Lch)
(C)
: AUDIO SIGNAL ROUTE (CENTER ch)
(SD)
: SURROUND DATA SIGNAL ROUTE
(D)
F
: AUDIO SIGNAL ROUTE (DIGITAL)
(UD)
: AUDIO SIGNAL ROUTE (USB DIGITAL)
S 1/2
47
8
VSX-55TXi
5 6 7
1
2
3
4
3.14 DSP ASSY (2/2)
A
S 2/2 DSP ASSY (AWX8249)
S 1/2
B
(F)(S) (SB)(C)
C
(C)
(C) (C) (SB) (S) (C) (F) (SB) (S) (C) (F) (F)
(F) (S)
(S)
D
E
(SB)
S 1/2
(SB) (SB)
F
S 2/2
48
1 2
VSX-55TXi
3 4
5
6
7
8
: AUDIO SIGNAL ROUTE (Lch)
(F)
: AUDIO SIGNAL ROUTE (FRONT Lch)
(S)
A
: AUDIO SIGNAL ROUTE (SURROUND Lch)
(SB)
: AUDIO SIGNAL ROUTE (SURROUND BACK Lch)
(C)
: AUDIO SIGNAL ROUTE (CENTER ch)
(F) (F) (F) (F) (F)
(F)
(F)
B
(C) (C) (C)
L 1/3 CN301
C
(C) (C) (C) (F) (S) (C)
(S)
(S)
D
(S) (S)
(S) (SB) (SB) (SB)
(S)
(SB)
(SB) (SB) (SB) (SB) (SB) (SB)
E
F
S 2/2
VSX-55TXi
5 6 7 8
49
1
2
3
4
3.15 1394 ASSY (1/2) (VSX-55TXi ONLY)
A
B
C
D
E
F
For Flash
T 1/2
50
1 2
VSX-55TXi
3 4
5
6
7
8
T 1/2 1394 ASSY (AWK7768)
: The power supply is shown with the marked box.
A
B
C
D
T 2/2
E F
T 1/2
VSX-55TXi
5 6 7 8
51
1
2
3
4
3.16 1394 ASSY (2/2) (VSX-55TXi ONLY)
A
T 2/2 1394 ASSY (AWK7768)
B
T 1/2
C
D
E
T 1/2
F
T 2/2
52
1 2
VSX-55TXi
3 4
5
6
7
8
A
T 1/2
B
C
S 1/2
CN701
D
E
S 1/2
CN702
F
: The power supply is shown with the marked box.
VSX-55TXi
5 6 7 8
T 2/2
53
1
2
3
4
3.17 DISPLAY ASSY
A
U DISPLAY ASSY (VSX-55TXi : AWX8315)
(VSX-53TX : AWX7983)
B
C
D
E
Remote Signal Control
F
U
54
1 2
L 3/3 CN501
VSX-55TXi
3 4
5
6
7
8
(HP)
: AUDIO SIGNAL ROUTE (PHONES ch)
A
B
(HP)
Y
CN1951
(HP)
(HP)
AJ
CN2002
C
V
CN3401
Display U-com
VSX-55TXi ONLY
X
CN3451
D
M
CN1601
C
CN1501
E
F
N
CN4752
VSX-55TXi
5 6 7 8
U
55
1
2
3
4
3.18 VOLUME, MULTI JOG and HEADPHONE ASSYS
A
V
VOLUME ASSY (AWX7971)
B
U
3002
ROTARY ENCODER
C
S3401 : MASTER VOLUME S3402 : ACOUSTIC EQ S3403 : MULTI CH IN S3404 : STEREO/DIRECT
D
E
F
V
56
1 2
VSX-55TXi
3 4
5
6
7
8
A
X
MULTI JOG ASSY (AWX7972)
B
U
3003
ROTARY ENCODER
C
S3451 : MULTI JOG S3452 : ENTER S3453 : MUSIC S3454 : MOVIE S3455 : STANDBY/ON
D
Y
HEADPHONE ASSY (AWX7980)
(HP)
U
CN3007
E
PHONES
(HP)
(HP)
F
: AUDIO SIGNAL ROUTE (PHONES ch)
X Y
VSX-55TXi
5 6 7 8
57
1
2
3
4
3.19 POWER AMP-L ASSY
A
Z
POWER AMP-L ASSY (AWX7984)
THERMISTOR AEX7004 (F) (F) (F)
(F)
B
(F)
CN4003
(F)
P
(S)
C
(F) (S) (SB)
(S)
(S)
(S)
(S)
D
(SB)
(SB)
(SB)
(SB)
(SB)
(SB)
E
(F)
: AUDIO SIGNAL ROUTE (FRONT Lch)
(S)
: AUDIO SIGNAL ROUTE (SURROUND Lch)
(SB)
: AUDIO SIGNAL ROUTE (SURROUND BACK Lch)
F
Z
58
1 2
VSX-55TXi
3 4
5
6
7
8
: The power supply is shown with the marked box.
Power Amp. Voltage Amplifying Stage Power Amp. Current Amplifying Stage
A
(F)
(F)
(F)
(F) (F) (F) (F)
AD
CN4601
B
(F)
(F)
(F) (S)
(S)
(S)
(S) (S) (S) (S)
C
AD
CN4603
(S) (S) (SB)
(S)
AD
CN4605
D
(SB)
(SB)
(SB) (SB) (SB) (SB)
AD
CN4603
(SB)
(SB)
(SB)
E
AB
CN4455
F
Z
VSX-55TXi
5 6 7 8
59
1
2
3
4
3.20 POWER AMP-R and POWER AMP-C ASSYS
A
AA
POWER AMP-R ASSY (AWX7985)
B
CN4002
(C)
C
D
CN4456
P
(C) (C)
AB
POWER AMP-C ASSY (AWX7986)
(C) (C) (C) (C)
E
(C) (C) (C)
Z
(C)
(C)
F
(C)
(C)
(C)
AA AB
60
1 2
VSX-55TXi
3 4
5
6
7
8
Power Amp. Voltage Amplifying Stage
Power Amp. Current Amplifying Stage
A
AD
CN4602
B
AD
CN4604
C
AD
CN4606
AD
CN4604
D
(C) (C) (C) (C) (C) (C) (C) (C)
E
(C)
(C)
(C)
(C)
(C)
AD
CN4602
(C)
: AUDIO SIGNAL ROUTE (CENTER ch)
F
: The power supply is shown with the marked box.
VSX-55TXi
5 6 7
AA AB
61
8
1
2
3
4
3.21 REGULATOR ASSY
A
AC
REGULATOR ASSY (VSX-55TXi : AWX8303) (VSX-53TX : AWX7967)
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 491.315 MFD, BY LITTELFUSE INK. FOR IC2411.
C2401, C2402 ; VSX-55TXi : ACH7191 VSX-53TX : 3300/35
AD
B
4602
C
AH
2251
D2411, D2412 ; VSX-55TXi : UDZS15B VSX-53TX : UDZ15B
D
CN1903 (VSX-55TXi)
CN1903 (VSX-53TX)
C2433 ; VSX-55TX i : ACH7192 VSX-53TX : 4700/166
VSX-55TXi ONLY
E
F
F G
AC
62
1
I
CN1001
2
K
CN901
3
H
CN1803
4
VSX-55TXi
5
6
7
8
L 3/3 CN1
L 3/3 CN2
A
L 3/3 CN502 L 3/3 CN3 L 3/3 CN351 L 3/3 CN302 O
CN1652
B
C
D
E
O
CN1653
O
VSX-55TXi
CN1654
F
: The power supply is shown with the marked box.
5 6 7 8
AC
63
1
2
3
4
3.22 SP/PS, DIODE, TRANS 2-1 and VH TR ASSYS
A
AF
TRANS 2-1 ASSY (AWX8326)
T1 POWER TRANSFORMER
B
AE
DIODE ASSY (AWX8017)
Rectifier for Power Amp.
C4621, C1622 ; VSX-55TXi : ACH7190 VSX-53TX : ACH7169
D2203-D2206, D2209-D2212 : UDZS9.1B D2207, D2208 : UDZS22B
C
FU4, FU5 : REK1114 (3.15A/125V)
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 4913.15 MFD, BY LITTELFUSE INK. FOR IC2201 AND IC2202.
D
AG
E
VH TR ASSY (AWX8018)
· NOTE FOR FUSE REPLACEMENT CAUTION - FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE WITH SAME TYPE AND RATINGS ONLY.
(F)
: AUDIO SIGNAL ROUTE (FRONT Lch)
(S)
: AUDIO SIGNAL ROUTE (SURROUND Lch)
(SB)
F
(C)
: AUDIO SIGNAL ROUTE (SURROUND BACK Lch) : AUDIO SIGNAL ROUTE (CENTER ch)
(HP)
AD AE AF AG
64
1 2
: AUDIO SIGNAL ROUTE (PHONES ch)
VSX-55TXi
3 4
Q
CN4701
5
6
7
8
Z
Y5
AA
Y6
AD
SP/PS ASSY (VSX-55TXi : AWX8307) (VSX-53TX : AWX7975)
(F) 0.1 (F) 0.01 0.01 (1/2) CN4611 ; VSX-55TXi : AKE7099 VSX-53TX : AKE7074
A
L FRONT R
(2/2)
(HP) 0.1
ASR7014
(F)
(S) 0.01 0.01 (F)
B
L SURROUND R SPEAKERS
Z AA AB Z AA
Y2
(C)
(S)
(S)
ASR7014
0.01 0.01
Y1 Y1
0.1
(SB)
L R
(S)
(SB) (HP)
(C)
0.1
ASR7014
SURROUND BACK
Y3
(S) (C) (SB) (C)
(1/2)
(SB)
(C) 0.01
C
Y4
CENTER
(2/2) CN4612 ; VSX-55TXi : AKE7100 VSX-53TX : AKE7075
0.1 0.1 (SB) ASR7014
(HP) (SB)
ASR7014
0.1 (HP)
D
CN2401
Speaker Relay
D4601-D4610 : 1SS355 330 330 330 330 330
AC
E
CN2004
(HP)
AJ
CN2003
(HP)
(HP)
(HP)
(HP)
AJ
F
AD
VSX-55TXi
5 6 7 8
65
1
2
3
4
3.23 TRANS 2-2, TRANS 1 and PRIMARY ASSYS
A
B
AH
TRANS 2-2 ASSY (AWX7970)
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 4913.15 MFD, BY LITTELFUSE INK. FOR IC2251 AND IC2252.
C
T1 POWER TRANSFORMER
CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE ONLY WITH SAME TYPE NO. 491005 MFD, BY LITTELFUSE INK. FOR IC2253.
AC
2402
D
AI
E
TRANS 1 ASSY (AWX7969)
F
AH AI
66
1 2
VSX-55TXi
3 4
5
6
7
8
A
(HP)
: AUDIO SIGNAL ROUTE (PHONES ch)
AD
CN4613
AD
CN4610
AJ
(HP)
PRIMARY ASSY (AWX7968)
B
CN3001
(HP)
U
C
AC OUTLET
D
AC Relay
LIVE
VEK1029 (10A/125V)
AC IN
NEUTRAL
E
· NOTE FOR FUSE REPLACEMENT CAUTION - FOR CONTINUED PROTECTION AGAINST RISK OF FIRE. REPLACE WITH SAME TYPE AND RATINGS ONLY.
F
AJ
VSX-55TXi
5 6 7 8
67
1
2
3
4
3.24 FM/AM TUNER MODULE
A
AK
B
FM/AM TUNER MODULE (AXQ7231)
FM FRONT END
(FM)
(FM)
(FM) (FM)
C
(FM) (FM) (FM) (FM) (AM) (AM) (AM) (AM) MW RF TUNING BLOCK
(FM)
(FM)
(AM)
(AM)
D
OSC : 980 - 2150kHz 10k step
E
F
AK
68
1 2
VSX-55TXi
3 4
5
6
7
8
A
(TX)
: AUDIO SIGNAL ROUTE (TUNER Lch)
(AM)
: AM SIGNAL ROUTE
(FM)
: FM SIGNAL ROUTE
: The power supply is shown with the marked box.
B
ATF7026
(AM)
(AM)
(AM)
(AM)
(AM)
(FM)
(TX)
(AM)
L 3/3
CN601
C
AM/FM IF + MPX IC
(AM)
(FM) (AM)
(TX) (TX)
(FM) (AM)
(FM) (TX) L201
ATE7003
D
E
PLL IC
F
AK
VSX-55TXi
5 6 7 8
69
1
2
3
4
4. PCB CONNECTION DIAGRAM
A
NOTE FOR PCB DIAGRAMS :
1. Part numbers in PCB diagrams match those in the schematic diagrams. 2. A comparison between the main parts of PCB and schematic diagrams is shown below.
Symbol In PCB Diagrams Symbol In Schematic Diagrams B C E B C E Part Name
3. The parts mounted on this PCB include all necessary parts for several destinations. For further information for respective destinations, be sure to check with the schematic diagram. 4. View point of PCB diagrams.
Connector
Transistor
Capacitor
B C E B B C E C E B C E
SIDE A
Transistor with resistor
B
D G S
D
G S D
G S Field effect transistor
P.C.Board
Chip Part
SIDE B
Resistor array
3-terminal regulator
C
D
E
F
70
1 2
VSX-55TXi
3 4
5
6
7
8
4.1 7.1CH I/O ASSY
SIDE A · For VSX-55TXi SIDE A
A
A 7.1CH I/O ASSY
B
CN1302
CN1301
CN1304
CN1303 7.1CH I/O ASSY
AWX8306
C1335
C1336
C1325
C1326
C1315
C1316
C1305
C1306
CMK-P3X
W1303 C1339 C1340
W1308 W1304 C1330
W1312 W1314
W1313 W1315 C1310 C1309 W1316
W1317
W1319 AG AG AG A-15V A+15V W1318
W1320 W1321 C SW R L SR SL SBR SBL MUTE W1322 9
C
C1329 R AG L SR SL SW C SBR SBL C1319 C1320
1
9
1
5
1
CN1307
CN1307 CN1306
CN1306
CN1308
CN1308
(ANP7490-A)
E CN1406
SIDE B
E CN1407
E CN1408
SIDE B
D
A 7.1CH I/O ASSY
CN1307 CN1306 CN1308
CN1307
R1327 R1328 9 R1317 R1318 C1345 C1343 C1344
1
CN1308 CN1306
R1375 R1380 R1376 R1365 R1366 R1360 9 R1370 R1356 R1355 Q1362 R1369 Q1372 Q1352 R1359 1 R1379 R1378 R1373 R1368 Q1361 R1374 R1372 R1363 R1367 C1372 R1371 R1382 C1371 C1361 R1361 R1362 C1362 5 C1341 IC1301 R1389 C1308 Q1381 R1381 1 C1304 R1383 C1302
C1348
1
C1347 C1346
1
C1334 R1334
C1323 R1323
R1332
C1392 C1332
C1394
C1312
IC1304
IC1303
IC1302
IC1301
Q1371 Q1381 Q1382
Q1372 Q1362 Q1352 Q1361 Q1351
A
VSX-55TXi
5 6 7 8
C1393
C1391