Pioneer VSX-53-TX, VSX-55-TXI Service manual
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
VSX-55TXi
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-55TXi
VSX-53TX
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model Type Power Requirement Remarks
VSX-55TXi KUXJI/CA AC120V
VSX-53TX KUXJI/CA AC120V
ORDER NO.
RRV2788
For details, refer to "Important symbols for good services".
T-ZZK JUNE 2003 printed in Japan
1234
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.
WARNING
B
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 performed for the
continued protection of the customer and service
technician.
LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground
(water pipe, conduit, etc.) by connecting a leakage
D
E
current tester such as Simpson Model 229-2 or
equivalent between the earth ground and all exposed
metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control shaft, etc.). Plug
the AC line cord of the appliance directly into a 120V
AC 60 Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5 mA.
Reading should
not be above
0.5 mA
Earth
ground
Device
under
test
Also test with
plug reversed
(Using AC adapter
plug as required)
Test all
exposed metal
surfaces
Leakage
current
tester
AC Leakage Test
ANY MEASUREMENTS NOT WITHIN THE
LIMITS OUTLINED ABOVE ARE INDICATIVE
OF A POTENTIAL SHOCK HAZARD AND
MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER.
2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appliance
have special safety related characteristics. These are
often not evident from visual inspection nor the
protection afforded by them necessarily can be obtained
by using replacement components rated for voltage,
wattage, etc. Replacement parts which have these
special safety characteristics are identified in this
Service Manual.
Electrical components having such features are
identified by marking with a
on the parts list in this Service Manual.
The use of a substitute replacement component which
does not have the same safety characteristics as the
PIONEER recommended replacement one, shown in the
parts list in this Service Manual, may create shock, fire,
or other hazards.
Product Safety is continuously under review and new
instructions are issued from time to time. For the latest
information, always consult the current PIONEER
Service Manual. A subscription to, or additional copies
of, PIONEER Service Manual may be obtained at a
nominal charge from PIONEER.
on the schematics and
F
2
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VSX-55TXi
5678
[ 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.
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
C
D
E
F
56
VSX-55TXi
7
8
3
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3.19 POWER AMP-L ASSY........................................................................................................................... 58
3.20 POWER AMP-R and POWER AMP-C ASSYS...................................................................................... 60
3.21 REGULATOR ASSY............................................................................................................................... 62
A
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
B
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
C
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
D
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
E
F
4
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VSX-55TXi
Video Section (Composite)
Input (Sensitivity/Impedance)
LINE....................................................................1 Vp-p/75 Ω
Output (Level/Impedance)
LINE....................................................................1 Vp-p/75 Ω
Frequency Response
LINE...................................................5 Hz to 10 MHz dB
+0
–3
Signal-to-Noise Ratio......................................................65 dB
FM Tuner Section
Frequency Range...................................87.5 MHz to 108 MHz
Usable Sensitivity...............Mono: 13.2 dBf, IHF (1.3 µV/75 Ω)
50 dB Quieting Sensitivity................................Mono: 20.2 dBf
Stereo: 38.6 dBf
Signal-to-Noise Ratio.........................Mono: 73 dB (at 85 dBf)
Stereo: 70 dB (at 85 dBf)
Distortion................................................Stereo: 0.5 % (1 kHz)
Alternate Channel Selectivity..........................60 dB (400 kHz)
Stereo Separation...............................................40 dB (1 kHz)
Frequency Response.......................30 Hz to 15 kHz (± 1) dB
Antenna Input..............................................75 Ω unbalanced
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
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)
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
NOTE:
Specifications and the design are subject to possible modifications without notice, due to improvements.
Amplifier Section
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 Ω)
Center.........................100 W (20 Hz – 20 kHz, 0.09%, 8 Ω)
Surround.......100 W +100 W (20 Hz – 20 kHz, 0.09%, 8 Ω)
Surround Back
...............100 W +100 W (20 Hz – 20 kHz, 0.09%, 8 Ω)
Audio Section
Input (Sensitivity/Impedance)
PHONO MM....................................................4.7 mV/47 kΩ
LINE...............................................................335 mV/47 kΩ
Frequency Response
PHONO MM.............................20 Hz to 20,000 Hz ± 0.3 dB
LINE..............................................5 Hz to 100,000 Hz dB
+0
–3
Output (Level/Impedance)
LINE..............................................................335 mV/2.2 kΩ
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
* Measured pursuant to the Federal Trade Commissionís
Trade Regulation rule on Power Output Claims for
Amplifiers.
** Measured by Audio Spectrum Analyzer.
Video Section (S jack)
Input (Sensitivity/Impedance)...............................1 Vp-p/75 Ω
Output (Level/Impedance)....................................1 Vp-p/75 Ω
Frequency Response.............................5 Hz to 10 MHz dB
+0
–3
Signal-to-Noise Ratio......................................................65 dB
Component Video Section
Input (Sensitivity) ...............................................1 Vp-p/75 Ω
Output (Level/Impedance)....................................1 Vp-p/75 Ω
Frequency Response...........................5 Hz to 40 MHz dB
+0
–3
Signal-to-Noise Ratio....................................................65 dB
• 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.
5678
1. SPECIFICATIONS
A
B
C
D
E
56
VSX-55TXi
7
F
5
8
1234
2. EXPLODED VIEWS AND PARTS LIST
NOTES:
A
2.1 PACKING
B
C
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.)
8
1
10
9
VSX-55TXi Only
11
12
14
2
3
4
5
6
7
13
15
16
Accessories
AUDIO/VIDEO MULTI-CHANNEL
D
AM Loop Antenna
(ATB7009)
SETUP
S0URCEÎTV
SYSTEM RECEIVER
OFF
VCR1/
DVD/LD TV/SAT TV CONT
DVR
MULTI CONTROL
1
5
9
MPX
¶
–
–
–
MODE
MD/
TAPE2
LOUDNESS TONE
2
DNR
BASS/TREBLE
6
0
DIRECT ACCESS SEARCH MODE
ENTER
DTV ON/OFF DISP MODE
8
BAND
3
DTV MENU CLASS
7
TV INPUT
TV CONTROL
TV CH
MUSIC
SURROUND
ENTER
TUNER
INPUT
MIDNIGHT
MULTI CH
ACOUSTIC
INPUT
SB CH
MODE
3
7
EQ
+
10
MULTI
OPERATION
RECEIVER
EFFECT/CH SEL
4
+
8
–
DISC
ENTER
GUIDE
TOP MENU
EXIT
RETURN
SUB TITLE
+
TUNING
¡
+
STATION
¢
CHANNEL
+
MUTE
REMOTE
SETUP
VCR2 VIDEO CD
CD-R/
E
TAPE1
DIMMER
SIGNAL SEL
VIDEO SEL HI-BIT
SYSTEM SETUP
MENU
TUNER EDIT TRACK
AUDIO
TUNING
1
STATION
4
CHANNEL
TV VOL VOLUME
MOVIE
STEREO/
DIRECT
F
Remote Control Unit
(VSX-55TXi : AXD7325)
FM Wire Antenna
(ADH7004)
RECEIVER
SOURCE
MULTI
SYSTEM
OPERATION
OFF
MULTI CONTROL
DVD/LD
VCR/DVR TV CONT
TV/SAT
VCR 2
CD
TUNER
RECEIVER
ACOUSTIC
MOVIE MUSIC
INPUT
EQ
SURROUND
MULTI CH
SB CH
INPUT
MODE
MODE
STEREO/
ENTER
MIDNIGHT
DIRECT
MUTE
MASTER
VOLUME
MENU TOP MENU
TUNER EDIT
TUNE
ST
ENTER
TUNE
−
DTV ON/OFF BAND
D.ACCESS
LOUDNESS EFFECT/CH SEL
DIMMER TONE
SIGNAL SEL
DNR
VIDEO SEL
HI-BIT
TV CONTROL
T
U
P
IN
CHANNEL VOLUME
T
C
E
L
E
S
RECEIVER
ST
CHANNEL
MPX
ENTER
BASS/TREBLE DISC
+
−
SUB TITLE
REMOTE
GUIDE
RETURN
+
CLASS
+
10
SETUP
SYSTEM
SETUP
AUDIO
CHANNEL
Remote Control Unit
(VSX-53TX : AXD7365)
"AA" IEC LR6 batteries
Microphone for Auto
Surround Sound Setup
(APM7004)
VSX-55TXi Only
Microphone Stand for Auto
Surround Sound Setup
(AEB7269)
RECEIVER
VSX-55TXi
Operating Instructions
Operating Instructions
(VSX-55TXi : ARB7284)
(VSX-53TX : ARB7285)
6
VSX-55TXi
1234
5678
(1) PACKING parts List
Mark
Mark
No. Description Part No.
1 Microphone APM7004
for Auto Surround Sound Setup
2 Microphone Stand AEB7269
for Auto Surround Sound Setup
3 FM Wire Antenna ADH7004
4 AM Loop Antenna ATB7009
5 Caution Sheet SP,E ARM7056
NSP 6 Warranty Card EL ARY7007
7 Operating Instructions (English) See Contrast table (2)
NSP 8 Polyetylene Bag Z21-038
(0.03*230*340)
No. Description Part No.
9 Remote Control Unit See Contrast table (2)
10 Battery Cover See Contrast table (2)
NSP 11 "AA" IEC LR6 batteries See Contrast table (2)
NSP 12 "AA" IEC LR6 batteries VEM1023
13 Front Pad 45 AHA7374
14 Rear Pad 45 AHA7375
15 Packing Sheet RHC1023
16 Packing Case See Contrast table (2)
(2) CONTRAST TABLE
VSX-55TXi/KUXJI/CA and VSX-53TX/KUXJI/CA are constructed the same except for the following:
A
B
Mark NO Symbol and Description
7 Operating Instructions (English) ARB7284 ARB7285
9 Remote Control Unit 45/KU AXD7325 Not used
9 Remote Control Unit 53/KU Not used AXD7365
10 Battery Cover AZN7896 AZA7424
NSP 11 "AA" IEC LR6 batteries VEM1023 Not used
16 Packing Case 55KU AHD8199 Not used
16 Packing Case 53KU Not used AHD8203
VSX-55TXi
/KUXJI/CA
VSX-53TX
/KUXJI/CA
C
D
56
VSX-55TXi
E
F
7
8
7
1234
2.2 EXTERIOR SECTION
A
19
61
F b
23
61
B
AI
C
8
31
AH
56
33
7
AF
6
E
N
32
58
N
23
L
O
P
Q
56
M
61
29
28
Q
5
R
61
61
4
24
26
Q
61
22
F b
61
61
20
O
52
14
AJ
61
D
3
21
52
AE
25
51
R
52
M
1
P
18
51
F a
63
(x4)
16
Refer to
"2.3 REAR PANEL
SECTION."
AD
2
52
52
35
63
(x10)
17
15
(VSX-55TXi)
16
52
36
R
52
52
52
51
52
51
(VSX-53TX)
15
52
51
52
15
(VSX-53TX)
15
(VSX-55TXi)
51
52
61
62
61
60
61
37
I
K
52
52
52
S
T
J
H
30
VSX-53TX
D
E
F
ONLY
29
42
43
57
61
46
52
55
47
55
Refer to "2.5 FRONT PANEL SECTION."
D
55
61
29
61
27
9
AG
61
65
59
61
41
65
65
44
57
A
B
C
52
48
52
61
45
L
65
Refer to
"2.4 HEAT SINK
SECTION."
26
52
34
38
38
(VSX-55TXi)
54
34
55
38
53
53
E
52
49
52
48
65
K
38
26
11
N
F a
B
54
61
13
VSX-55TXi
ONLY
A
38
61
C
39
H
AC
54
50
S
10
61
64
G
52
G
12
VSX-55TXi
ONLY
26
55
I
S
T
J
38
55
61
O
NON-CONTACT
SIDE
CONTACT SIDE
40
8
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VSX-55TXi
>
>
>
5678
(1) EXTERIOR SECTION parts List
Mark
No. Description Part No.
1 PRIMARY Assy AWX7968
2 SP/PS Assy See Contrast table (2)
3 DIODE Assy AWX8017
4 FAN CONNECTION Assy AWX8005
5 FAN DRIVE Assy AWX7976
6 TRANS 2-1 Assy AWX8326
7 TRANS 2-2 Assy AWX7970
8 TRANS 1 Assy AWX7969
9 VH TR Assy AWX8018
10 DSP ASSY AWX8249
11 MIC AMP Assy AWX8004
12 DSP CONNECTION Assy See Contrast table (2)
13 REGULATOR Assy See Contrast table (2)
14 Bonnet Case 45B AZN7897
15 Spacer 45A AEB7263
16 Spacer 45B AEB7264
17 Label (DD/DTS/THX) ARW7177
18 Label (FCC/DOC) ARW7191
19 Barrier 45 AEC7444
20 Left Beam 45 ANG7401
21 FU1 Fuse (10A) VEK1029
22 Primary Angle 35 ANG7301
NSP 23 Binder ZCA-BK1
NSP 24 Mini Clamp VEC1597
25 Fan Box 45 ANG7413
26 Locking Card Spacer PNW2917
27 Trans Shield 45 ANG7400
28 Styling Sheet B AEC7437
29 Push Rivet AEC7370
30 Trans Frame 45 ANG7399
31 T1 Power Transformer ATS7328
32 FU4,FU5 Fuse (3.15A) REK1114
NSP 33 Trans Label 45 AAX7957
Mark
No. Description Part No.
34 PCB Mold AMR2534
35 Bridge Frame 45F ANG7409
36 Bridge Frame 45R ANG7410
37 J7 21P FFC/60V ADD7355
38 Card Spacer DNK2769
39 Wire Clip (A) VEC1355
40 DSP Shield 45B ANG7403
NSP 41 Under Base See Contrast table (2)
42 Screw Cover 45A See Contrast table (2)
NSP 43 Wire Saddle DEC1450
44 Styling Sheet AEC7413
45 Stabilizer 45 ANG7408
NSP 46 Panel Stay 45 AND7047
NSP 47 Energy Star Label AAX7876
48 Insulator PNW2766
49 Bottom Plate 45 See Contrast table (2)
50 DSP Shield 45A See Contrast table (2)
51 Screw BBZ40P080FZK
52 Screw BBZ30P080FCC
53 Screw BBZ30P100FCC
54 Screw IBZ30P150FCC
55 Screw BBT30P080FCC
56 Screw ABA7066
57 Screw ABA7009
58 UL Tube ADN7007
59 Screw Cover
See "2.5 FRONT PANEL SECTION" No. 19-3
60 Screw ABA1208
61 Screw IBZ30P080FCC
62 Screw IBZ30P100FCC
63 Spacer Circle AEC7330
64 Nylon Rivet AEC7408
65 Screw See Contrast table (2)
A
B
C
D
(2) CONTRAST TABLE
VSX-55TXi/KUXJI/CA and VSX-53TX/KUXJI/CA are constructed the same except for the following:
Mark NO Symbol and Description
2 SP/PS Assy AWX8307 AWX7975
12 DSP CONNECTION Assy AWX8299 AWX8024
13 REGULATOR Assy AWX8303 AWX7967
NSP 41 Under Base 45 ANA7138 Not used
NSP 41 Under Base 53 Not used ANA7158
42 Screw Cover 45A Not used AEC7414
49 Bottom Plate 45 ANF7031 Not used
50 DSP Shield 1394 A ANG7420 Not used
50 DSP Shield 45 A Not used ANG7402
65 Screw BBZ30P080FCC IBZ30P080FCC
VSX-55TXi
/KUXJI/CA
VSX-55TXi
56
VSX-53TX
/KUXJI/CA
7
E
F
9
8
1234
2.3 REAR PANEL SECTION
13
A
12
21
11
21
B
18
I
2
1
A
3
21
29
22
29
21
32
21
21
14
23
F
G
For Exterior
Sction
C
4
K
B
5
8
AK
15
(VSX-55TXi only)
24
21
29
21
(VSX-53TX only)
21
(VSX-55TXi only)
25
(VSX-55TXi only)
16
9
6
E
17
For Exterior Sction
26
(VSX-55TXi only)
For Heat Sink Sction
D
For Front Sction
For Exterior Sction
E
19
7
L
11
19
10
For Exterior Sction
H
VSX-55TXi only
D
(VSX-53TX)
20
For Exterior Sction
21
28
27
31
T
30
For Exterior Sction
NON-CONTACT
F
10
CONTACT SIDE
SIDE
9
D
VSX-55TXi
1234
>
5678
(1) REAR PANEL SECTION parts List
Mark
No. Description Part No.
1 RS232C Assy See Contrast table (2)
2 COMPONENT Assy See Contrast table (2)
3 7.1CH I/O Assy See Contrast table (2)
4 VIDEO Assy See Contrast table (2)
5 V-AUDIO IN Assy See Contrast table (2)
6 INPUT CONNECT Assy AWX7974
7 MAIN CONTROL Assy See Contrast table (2)
8 FM/AM TUNER Module AXQ7231
9 OPTICAL IN Assy AWX7978
10 COAXIAL IN Assy See Contrast table (2)
11 Rear Panel See Contrast table (2)
12 Cord Stopper CM-22C
13 AC Power Cord VDG1075
14 Speaker Sheet AAK8016
15 Cushion Circle 16B AED7052
16 Screw with Terminal See Contrast table (2)
Mark
No. Description Part No.
17 J8 13P FFC/60V ADD7356
18 J1902 Connector Assy (8P) ADE7085
19 J5 9P FFC/60V See Contrast table (2)
20 J6 20P FFC/60V ADD7354
21 Screw BBZ30P080FCC
22 Screw IBZ30P100FCC
23 Screw See Contrast table (2)
24 Screw VPZ30P100FZK
25 Screw See Contrast table (2)
26 Tuner Spacer See Contrast table (2)
27 1394 Assy See Contrast table (2)
28 Screw See Contrast table (2)
29 Screw IBZ30P080FCC
30 J16 22P FFC/60V See Contrast table (2)
31 J17 10P FFC/60V See Contrast table (2)
32 Screw 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 Symbol and Description
1 RS232C Assy AWX7966 Not used
1 12V TRIGGER Assy Not used AWX8310
2 COMPONENT Assy AWX8293 AWX8295
3 7.1CH I/O Assy AWX8306 AWX7973
4 VIDEO Assy AWX8311 AWX7962
5 V-AUDIO IN Assy AWX8313 AWX7964
7 MAIN CONTROL Assy AWX8285 AWX8289
10 COAXIAL IN Assy AWX8300 AWX8323
11 Rear Panel 55KU ANC8192 Not used
11 Rear Panel 53KU Not used ANC8196
16 Screw with Terminal AKE-031 Not used
19 J5 9P FFC/60V ADD7430 ADD7353
23 Screw ABA7078 Not used
25 Screw PMZ30P060FCC Not used
26 Tuner Spacer AEC7314 Not used
27 1394 Assy AWK7768 Not used
28 Screw PCZ26P060FMC Not used
30 J16 22P FFC/60V ADD7431 Not used
31 J17 10P FFC/60V ADD7432 Not used
VSX-55TXi
/KUXJI/CA
VSX-53TX
/KUXJI/CA
C
D
E
56
VSX-55TXi
F
7
8
11
1234
2.4 HEAT SINK SECTION
A
18
14
5
14
B
6
C
P
4
B
C
16
11
D
16
14
7
9
10
14
12
14
A
6
14
6
14
For Rear Panel Sction
14
14
B
14
17
17
14
14
14
9
13
Z
1
14
AA
14
14
3
AB
2
14
14
14
6
6
6
14
5
14
14
A
C
8
7
NON-CONTACT
E
F
12
1234
VSX-55TXi
SIDE
CONTACT SIDE
>
>
5678
HEAT SINK SECTION parts List
Mark
No. Description Part No.
1 POWER AMP-L Assy AWX7984
2 POWER AMP-C Assy AWX7986
3 POWER AMP-R Assy AWX7985
4 POWER AMP IN Assy AWX7982
NSP 5 Heat Sink 45 ANH7152
6 PCB Angle 45 ANG7406
7 Mica Sheet 45 AEE7047
NSP 8 Speed Clamp AEC7445
9 H.S Angle 45 ANG7404
10 Fan Holder 80 ANG7407
11 Fan Motor AXM7023
12 J14 24P FFC/60V ADD7357
NSP 13 Wire Saddle DEC1450
14 Screw BBZ30P100FCC
15 • • • • • •
16 Screw BBZ30P300FMC
17 Screw ABA7085
18 TH1 Thermistor AEX7004
A
B
C
D
E
56
VSX-55TXi
F
7
8
13
1234
2.5 FRONT PANEL SECTION
A
37
12
8
11
13
B
C
26
25
22
38
38
24
21
15
10
3
9
34
A
38
20
23
14
16
17
20
21
X
1
31
M
2
37
C
Y
B
4
B
32
A
35
39
6
C
37
7
39
18 (VSX-55TXi ONLY)
CUT (19-2)
CUT (19-3 : VSX-53TX ONLY)
19-1
U
37
37
36
33
C
37
30
19-2
37
C
16
37
28
29
37
5
V
37
C
D
37
E
F
22
NON-CONTACT
SIDE
CONTACT SIDE
14
1234
VSX-55TXi
5678
(1) FRONT PANEL SECTION parts List
Mark
No. Description Part No.
1 MULTI JOG Assy AWX7972
2 MIC & F.OPT IN Assy AWX7981
3 DISPLAY Assy See Contrast table (2)
4 HEADPHONE Assy AWX7980
5 VOLUME Assy AWX7971
6 FRONT IN Assy AWX7977
7 STYLING Assy • • • • •
8 Door 45 ANB7277
9 Spacer 45A AEB7263
10 Door Stay 45B AAH7089
11 Door Shaft 35 AMR7295
12 Damper Assy (200) AXA7088
13 Door Hinge L 45B AMR7386
14 Door Hinge R 45B AMR7387
NSP 15 Earth Lead Wire ADH7022
16 Earth Plate B ANG7412
17 Magnet 35 AMF7007
18 FL Sheet 45R See Contrast table (2)
19-1 Panel Base 45B AMB7803
19-2 Magnet Holder
19-3 Screw Cover
20 Cushion Circle 6B AED7044
Mark
No. Description Part No.
21 Nut NK90FUC
22 Rotary Knob L BK AAA7018
23 D.Sheet AAK7955
24 Window See Contrast table (2)
25 Pioneer Badge B PAN1376
26 F.Panel See Contrast table (2)
27 • • • • •
28 J4 7P FFC/60V ADD7352
29 J1 32P FFC/60V ADD7349
30 Earth Plate A ANG7411
NSP 31 Speed Clamp AEC7445
32 J1901 Connector Assy (3P) ADE7084
33 J15 3P FFC/60V ADD7371
34 J2 11P FFC/60V ADD7350
35 J3 4P FFC/60V ADD7351
36 Wire Clip (A) VEC1355
37 Screw BPZ30P100FMC
38 Screw BBZ30P080FCC
39 Screw ABA7009
A
B
C
(2) CONTRAST TABLE
VSX-55TXi/KUXJI/CA and VSX-53TX/KUXJI/CA are constructed the same except for the following:
Mark NO Symbol and Description
3 DISPLAY Assy AWX8315 AWX7983
18 FL Sheet 45R AAK7957 Not used
24 Window 55 AAK8150 Not used
24 Window 53R Not used AAK8155
26 F.Panel 55BKU ANB7312 Not used
26 F.Panel 53BKU Not used ANB7316
VSX-55TXi
/KUXJI/CA
VSX-53TX
/KUXJI/CA
D
E
56
VSX-55TXi
F
7
8
15
1234
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
3.1.1 AUDIO BLOCK DIAGRAM
A
B
C
D
E
F
D 1/2
OPTICAL IN
ASSY
(CD-R/TAPE1)
AC
REGULATOR
ASSY
ANTENNA
IN
MIC & F.OPT
M
IN ASSY
JA1601
IN
DIGITAL
(FRONT)
JA1501
L
R
AUDIO
(FRONT)
VIDEO INPUT
FRONT IN
C
ASSY
16
H 1/2
COAXIAL IN
ASSY
JA1701
IN1
(TV/SAT)
IN2
JA1702
CN2412
(9P)
AK
BN201
FM
AM
JA113
(1/2)
L
CD-R/
TAPE1
R
JA112
(1/2)
L
MD/
TAPE2
R
JA111
L
CD
R
LINE
CN1601
OPT
(4P)
R
1
L
8
CN3
(9P)
FOPT
PHONO/
CN3004
FV-L
3
CN1501
CN3005
(7P)
CN1205
B 1/2
VSX-55TXi
ONLY
USB AUDIO
(CD-R/TAPE1)
CN1701
8
DIGITAL
2
4
(1/2)(9P)
JA1681
JA1801
IN 3
IN 4
(CD)
DIN1
DIN2
CN1801
(1/2)(9P)
CN2408
(17P)
2
DIN1
2
DIN2
4
FM/AM TUNER
MODULE
CN201
11
TUNER
MD PLAY
CD
V1/IN
V2/IN
TV/SAT
DVD/LD
FVIDEO
17
FOPT
17
DISPLAY
ASSY
(1/2)
CN1201
(13P)
1
41
42
43
44
2
3
4
5
6
6
FV-L
6
CN1204
(1/2)(17P)
L
VCR2
IC201
1
BA1451F
AM/FM IF
20
+ MPX IC
CD-R PLAY
LINE/PHONE
CN501
(32P)
CN3006
(32P)
4
(4P)
3
(7P)
U 1/2
(2/3)
L
R
IN
VCR1
V-AUDIO IN ASSY
IC1681
PCM2902EG
USB
D+
1
Resceiver
D-
2
1
13
IC1881
TC74HCU04F
CN1653
(17P)
16
CN601
(13P)
TXL TXL
7 7
8
9
10
11
14
6
V1L
V2L
11
10
12
V1L
V2L
12
(1/2)
CN1203
L
R
IN
TV/SAT
CN1802
25
24
4
10
IC101
TC9274F-019
Selector
CD-R REC
MD REC
V1/OUT
V2/OUT
OUT
45
3
TVL
DVDL
12
13
15
1413
TVL
DVDL
15
1413
L
R
IN
DVD/LD
(1/2)(20P)
6
2
14
16
12
10
CN1651
(28P)
18
21
V1/OUT
V2/OUT
15
14
CN1405
(1/2)(17P)
R
IN
CN101
(1/2)(20P)
IN6
OUT2
IN2
14
IN1
16
IN3
12
IN4
10
CN102
(28P)
OPTOPTOPT
18
TUNER
DVD/LD
TV/SAT
CN101
(15P)
CN1401
(15P)
SURROUND
MULTI CH IN
SURROUND
S
6
2
RX0
DAUX
DSP CONNECTION
ASSY
O
4
CD-R
3
CD
2
5
7
V1/IN
8
IC201
TC9164AF
Selector
IC102 (2/2)
UPC4570G2
5
7
6
FRONT
CENTER
SUB WOOFER
BACK
DSP ASSY
IC201
AK4114VQ
DIR & DIT
IN1
44
IN2
46
IN3
48
IN4
1
IN6
5
42
28
9 2
IC101
AK5380VT
AD
IC202 (1/2)
NJM4558MD
MR Buffer
3
6
2
CN201
(7P)
CN1402
(7P)
CN1301
IC1301 (1/2)
UPC4570G2
L
R
L
IC1302 (1/2)
R
UPC4570G2
CN1302
L
R
3
2
3
2
TX0
15
TX1
16
25
SDTO
1
MR L
1
MR L
7
1
1
IC1304 (1/2)
UPC4570G2
11 9
IC701
TC74VHC157FT
Selector
16
FL
ALOUT
16
11
FL
3
3
FL
3
3
1
2
3
1
2
IC1303 (1/2)
UPC4570G2
IC1303 (2/2)
5
UPC4570G2
7
6
IC302
IS61LV6416-12T
10
SDI1
IC301
DSPC56367PV150
DSP1
Decoder
12820
4
10
C
SL
SW
SBL
12820
4
10
ALOUT
109
4
2
C
SL
SW
SBL
10
45
12
9
75
6
C
SL
SW
SBL
9
75
6
IC303
SRAM
SRAM
IS63LV61024-12T
4
5
7
6
CN601
(21P)
CN301
(21P)
IC103
TC9163AF
6
4
FL
3
C
18
SW
11
SBL
8
FL
2
C
19
SW
10
SBL
7
SL
9
SL
11
IC104
TC9215AF
CN102
(13P)
CN1403
(13P)
CN1406
(9P)
CN1307
(9P)
IC451
SRAM
IS61LV6416-12T
FL
10
SL
11
SBL
48
C
138
IC401
DSPC56367PV150
DSP2
PPP
FL
SL
5
SBL
9
C
17
SW
12
SBL
SL
10
SW
CD-R REC
IC471
PPROM
IS63LV61024-12T
7
5
SBL
4
6
IC701
TC94A07F
7
IC703
TC94A07F
7
IC704
TC94A07F
7
IC702
TC94A07F
C
7
20
18
21
MD REC
MR L
V1/OUT
V2/OUT
FL
SL
C
5
4
5
4
5
4
5
4
VSX-55TXi
1234
5678
A
15
16
IC541
AK4383VT
11
12
15
16
13
14
IC601 (1/2)
NJM4565MD
LPF Amp.
2
3
15
3
16
2
3
2
3
6
5
NJM4565MD
1
IC661 (1/2)
1
NJM4565MD
LPF Amp.
IC621 (1/2)
NJM4565MD
1
LPF Amp.
IC621 (2/2)
7
NJM4565MD
LPF Amp.
FL
SL
SBL
C
IC521
AK4383VT
IC501
AK4383VT
3
IC561
AK4383VT
3
3
The details please refer to next page.
MAIN CONTROL
L
ASSY
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
CD-R REC
MD REC
MR L
V1/OUT
V2/OUT
CN103
(9P)
CN1404
(9P)
64
8
1
2
C
FL
SL
SW
SBL
46
2
9
8
IC681 (1/2)
MIX Amp.
2
2
3
CN801
(24P)
13
7
3
9
JA113
(2/2)
JA112
(2/2)
5
6
1
IC641 (1/2)
NJM4565MD
LPF Amp.
1
P
CN4001
FL
SL
SBL
C
CD-R/
L
TAPE1
R
OUT
MD/
L
TAPE2
R
OUT
7
IC1541
UPC4570G2
SW Amp.
FL
CN101
(2/2)(20P)
SBL
SW
SL
C
CN701
CN702
(22P)
(10P)
4
2
OUT1
OUT2
CN401
(22P)
CN402
(10P)
POWER
AMP IN ASSY
CN4003
CN4401
(19P)
12
CN4002
C
8
(19P)
CN4402
CN4454
(17P)
10
(10P)
5
3
1
FL
SL
SBL
CN4453
C
(24P)
12
18
22
16
AA
POWER AMP-R
ASSY
H 2/2
COAXIAL IN
ASSY
(2/2)(20P)
4
2
CN1801
(2/2)(9P)
CN1802
T
Refer to "3.1.3 1394
BLOCK DIAGRAM".
POWER AMP-L
Z
ASSY
IC4101
(17P)
13
15
17
(10P)
10
PA9009A
Power Amp.
IC4201
PA9009A
Power Amp.
IC4301
PA9009A
Power Amp.
IC4451
PA9009A
Power Amp.
AB
IC401
M62429FP
MR Volume
1 2
D 2/2
OPTICAL IN
ASSY
CN1701
(2/2)(9P)
DOUT1
6
8
6
DOUT2
8
1394 ASSY
1
3
4
1
3
4
1
3
4
1
3
4
POWER AMP-C
ASSY
CN1405
(2/2)(17P)
CN1204
MRL
3
V1OL
16
V2OL
17
JA1703
JA1704
B 2/2
(2/2)(17P)
3
16
17
HEADPHONE
Y
ASSY
2
OUT1
OUT2
FL
Y2
SL
Y3
SBL
Y3
C
CN4601
CN4603
CN4602
HP L
2
5
HP L
7
1
HP L
1
(2P)
1
(2P)
2
1
(2P)
1
AD
Y1
V-AUDIO IN ASSY
CN1951
(3P)
CN3007
(3P)
CN3001
(11P)
CN2002
(11P)
CN2004
(5P)
CN4613
(5P)
RY4601
RY4602
RY4603
RY4604
DISPLAY
ASSY
PRIMARY
ASSY
CN4611
CN4612
SP/PS ASSY
CN1205
(1/3)
PHONES
U 2/2
AJ
L
FRONT
R
L
SURROUND
R
L
SURROUND
R
BACK
CENTER
MULTI-ROOM
L
& SOURCE
R
OUT
B
C
SPEAKERS
D
CN1408
(9P)
CN1308
(9P)
INPUT CONNECT ASSY
E
86
2
1
4
C
FL
SL
SW
SBL
2
4
8
9
6
7.1 CH I/O ASSY
A
CN1303
SUB WOOFER
CENTER
L
FRONT
R
CN1304
L
SURROUND
R
L
SURROUND
BACK
R
PRE OUT
VSX-55TXi
56
CN1205
(3/3)
CN1201
(2/2)
L
VCR1
OUT
R
L
VCR2
OUT
R
E
F
7
8
17
1234
3.1.2 DSP BLOCK DIAGRAM
A
L
CN301
IC101
AK5380VT
AD
DSP ASSY
S
B
H
CN1802
IC201
AK4114VQ
DIR & DIT
O
CN651
C
T
CN401
IC701
TC74VHC157FT
SELECTOR
D
IC302
IS61LV6416-12T
SRAM
IC303
IS63LV1024-12T
E
SRAM
IC705
TC7SH04FU
INVERTER
IC706
TC7SH04FU
INVERTER
IC305 TC7W125FU 3 STATE BUFFER
IC301
DSPC56367PV150
DECODER
DSP1
T
18
CN402
VSX-55TXi
1234
F
5678
A
IC501
AK4383VT
B
IC503
TC7SH04FU
BUFFER
IC451
IS61LV6416-12T
IC401
DSPC56367PV150
DSP2
SRAM
PPP
IC471
PPROM
IS63LV1024-12T
IC521 AK4383VT
IC541 AK4383VT
IC561 AK4382AVT
C
CN301
L
D
56
VSX-55TXi
E
F
7
8
19
1234
3.1.3 1394 BLOCK DIAGRAM
A
1394 ASSY
T
(1/2)
(22P)
CN401
1394_SPDIF
IE_BDT
IE_FDT
21
201718
S
IE_CDT
IE_SDT
19
CN701
IE_MCK
IE_BCK
9
14
IE_LRCK
16
DSD1
DSD2
4567892
(10P)
CN402
S
DSD3
CN702
DSD4
DSD5
DSD6
DSDCLK
(2/2)
(22P)
CN401
S
CN701
B
42
IC409
TC7SZ126FU
60958
MLPCM_DATAA
6
2
MLPCM_DATA0
MCLK
MLPCM_DATA1
MLPCM_DATA2
9
MLPCM_BCK
MLPCM_LRCK
8
7
C
BCKO
LRCKO
AMCKO
IC301
PD8112A
(Gate Array)
Flow Control IC
X302
22.5792MHz
SDATA0O5SDATA1O4SDATA2O3SDATA3O
60958OUT
CONT44
CLK44K
45 44
CLK48KI
40
CLK48K
39
V+3D
IC1
3.3V REG.
NJM2391DL1-33
V+5D
SAPCMBCKI
SAPCMLRCKI
SAPCMD3I
SAPCMD2I
SAPCMD1I
SACDMCKO
SACD5O
SACD4O
SACD3O
SACD2O
SACD1O
SACD0O
17161514131218
B2
B3B4B5B6B7
IC405
A2A3A4A5A6A7A1
3456782
TC74VHC541FT
SACD_DATA0
SACD_DATA1
SACD_DATA2
SACD_DATA3
22
16
17
18
19
20
29
28
25
24
23
22
SAPCM_BCK
SAPCM_LRCK
SAPCM_DATA3
SAPCM_DATA2
SAPCM_DATA1
SACD_MCLK
SACD_DATA5
SACD_DATA4
SACD_DATA3
SACD_DATA2
SACD_DATA1
SACD_DATA0
B1
SACD_MCLK
SACD_DATA4
SACD_DATA5
F2BCK
F2LRCK
F2SLR
F2CSWEX2
F2FLREX1
DSBCKF
DSISR
IC401
DSISL
SM5816AF
DSD Converter
DSISW
DSICT
DSIFR
64 65 66 67 68 62 47 46 45 44 43
DSIFL
63
(SACD → LPCM)
D
60958IN
SDATA0I
SDATA1I
SDATA2I
SDATA3I
LRCKI
BCKI
SACDD0I
SACDD1I
SACDD2I
SACDD3I
SACDD4I
SACDD5I
SACDDAI
82
103
60958OUT
MLPCM_D0
MLPCM_DA
14
174
MLPCMA
60958OUT
51 52
XI
TPB0N
TPB0P
MLPCM_D011MLPCM_D1
PLLVDD
TPA0N
E
X201
24.576MHz
252629
TPB0P
TPB0N
TPA0N
123
F
(6P)
JA201
1
999872757677787980
100
101
102
MLPCM_BCLK
MLPCM_LRCK
13
10
KLPCM_D2
MLPCM_LRCK
TPB1N
(6P)
JA202
SACD_D0
9
158
HSDI1_D0
MLPCM_BCLK
TPB1N
TPB1P
333436
TPB1P
123
2
MLPCM_D1
MLPCM_D2
12
TPA0P
30
TPA0P
4
SACD_D1
159
HSDI1_D1
TPA1N
TPA1P
37
TPA1P
TPA1N
4
SACD_D2
SACD_D3
163
164
HSDI1_D2
HSDI1_D3
SACD_D4
IC201
iLINK
SACDMKI
70
SACD_D5
SACD_DA
SACD_MCK
165
166
167
153
HSDI1_D4
HSDI1_D5
HSDI1_D6
HSDI1_CLK
(Mercury)
iceLynx-Micro
TSB43CA42GGW
IC302
64M SDRAM
K4S641632F-TC75
IC102
AYW7033
4M Flash ROM
TXD2
(6P)
CN101
IC101
PD5787A
TXD0
RXD0
333436
RXD2
DTR2
2
1
RS232C
(For Flash)
Host CPU
RTS0
CTS0
32
CTS2
3
4
20
1234
VSX-55TXi
5678
3.1.4 POWER AMP BLOCK DIAGRAM
A
B
C
D
E
56
VSX-55TXi
F
7
8
21
1234
3.1.5 VIDEO BLOCK DIAGRAM
A
JA1001
(DVD/LD)
VIDEO
(TV/SAT)
COMPONENT
Y
B
P
IN
PR
Y
P
B
IN
PR
JA1002
13
12
1
2
3
5
TC74HC4053AF
Selector
B
C
C
(FRONT)
VIDEO INPUT
JA1501
VIDEO
S VIDEO
3
14
2
15
4
IC101
FRONT IN
ASSY
CN1501
5
6
5
6
7
(7P)
IC1002 (1/2)
TK15450M
Y Amp.
1
IC1003 (2/2)
TK15450M
Cb Amp.
7
3
2
CN2405
(15P)
3
4
10
9
11
U
FV
3
FV-C
2
FV-Y
1
CN3005
(7P)
IC1003 (1/2)
TK15450M
Cr Amp.
1
AC
OSD
OSDON
FV-Y
FV-C
FV
DISPLAY
ASSY
CN3006
COMPONENT ASSY
I
IC1052
TC74HC4053
Selector
15 1
REGULATOR ASSY
CN2412
645
645
FV
12
12
FV-C
14
14
FV-Y
13
13
CN501
(32P)
(32P)
L
IC1051
PDC084A
OSD
13
(9P)
CN3
(9P)
CN1001
CN2404
(9P)
(9P)
CN2413
(19P)
CN502
(19P)
7
3
OSD
OSDON
IC501
PD5770A8
µ-COM
MAIN CONTROL
ASSY
JA1003
Y
MONITOR OUT
(COMPONENT
P
B
VIDEO)
PR
IC902
IC933
NJM2279M
Multi-Room
Selector
10
14
4
IC903
TC4W53FU
OSD Selector
7
5 6
OSD
OSDON
Q931
VIDEO ASSY
K
1
Q932
Q901
V
Y
C
V
Y
C
V
Y
C
JA905
MULTI-ROOM
& SOURCE
MONITOR OUT
JA904
VIDEO
S VIDEO
JA901
(2/2)
VIDEO
S VIDEO
JA902
(2/2)
VIDEO
S VIDEO
MONITOR
OUT
VCR2
OUT
VCR1/DVR
OUT
IN1
12
IN2
3
IN3
1
VIDEO
S VIDEO
VIDEO
S VIDEO
VIDEO
S VIDEO
VIDEO
S VIDEO
CN901
(15P)
JA901
(1/2)
JA902
(1/2)
JA903
(1/2)
OSD
13
OSDON
12
FV
5
FV-C
7
FV-Y
6
IN1
IN2
IN3
IN4
IN5
IN1
IN2
IN3
IN4
IN5
IN1
IN2
IN3
IN4
IN5
IC901
NJM2296M
Composite
Selector
13
9
7
5
3
IC931
NJM2296M
Y Selector
13
9
7
5
3
14
16
19
1
22
IC932
NJM2596M
C Selector
OUT1
1
OUT2
15
OUT3
11
OUT1
1
OUT2
15
OUT3
11
OUT1
10
OUT2
8
OUT3
5
D
VCR1/
DVR
E
VCR2
IN
DVD/
LD
TV/
F
SAT
OSD
OSDON
BU4053BCF
OSD Selector
12
13
5
11
22
1234
VSX-55TXi
5678
A
B
C
D
E
56
VSX-55TXi
F
7
8
23
1234
3.2 OVERALL WIRING DIAGRAM
A
VOLUME ASSY
(AWX7971)
B
C
V
DISPLAY ASSY
U
(VSX-55TXi : AWX8315)
(VSX-53TX : AWX7983)
MIC & F.OPT IN
M
ASSY (AWX7981)
N
MIC AMP ASSY
(AWX8004)
FRONT IN
C
ASSY (AWX7977)
HEADPHONE
Y
ASSY (AWX7980)
P
POWER AMP IN
ASSY (AWX7982)
L 1/3- L 3/3
REGULATOR ASSY
(VSX-55TXi : AWX8303)
(VSX-53TX : AWX7967)
L
MAIN CONTROL ASSY
(VSX-55TXi : AWX8285)
(VSX-53TX : AWX8289)
AC
S
D
E
S 1/2, S 2/2
DSP ASSY
(AWX8249)
O
DSP CONNECTION ASSY
(VSX-55TXi : AWX8299)
(VSX-53TX : AWX8024)
E
INPUT CONNECT ASSY
(AWX7974)
AA
POWER AMP-R ASSY
(AWX7985)
AB
POWER AMP-C ASSY
(AWX7986)
F
VSX-55TXi
ONLY
24
VSX-55TXi : ADD7430
T 1/2, T 2/2
OPTICAL IN ASSY
T
1394 ASSY (AWK7768)
1234
VSX-53TX : ADD7353
(AWX7978)
D
COAXIAL IN ASSY
(VSX-55TXi : AWX8300)
(VSX-53TX : AWX8323)
H
AK
FM/AM TUNER
MODULE
(AXQ7231)
VSX-55TXi
VIDEO ASSY
(VSX-55TXi : AWX8311)
(VSX-53TX : AWX7962)
K
V-AUDIO IN ASSY
(VSX-55TXi : AWX8313)
(VSX-53TX : AWX7964)
B
7.1CH I/O ASSY
(VSX-55TXi : AWX8306)
(VSX-53TX : AWX7973)
A
5678
Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".
X
MULTI JOG ASSY
(AWX7972)
FAN MOTOR
(FRONT)
AXM7023
AEX7004
THERMISTOR
Z
POWER AMP-L ASSY
(AWX7984)
R
FAN DRIVE
ASSY
(AWX7976)
Q
FAN CONNECTION
ASSY (AWX8005)
AH
TRANS 2-2
ASSY
(AWX7970)
POWER
TRANSFORMER
(ATS7328)
AF
TRANS 2-1
ASSY (AWX8326)
FU4, FU5 :
REK1114 (3.15A/125V)
T1
AI
TRANS 1
ASSY
(AWX7969)
VH TR ASSY
(AWX8018)
AG
DIODE ASSY
AE
(AWX8017)
A
B
C
I
COMPONENT ASSY
(VSX-55TXi : AWX8293)
(VSX-53TX : AWX8295)
RS232C ASSY
(AWX7966)
(for VSX-55TXi)
12V TRIGGER ASSY
(AWX8310)
(for VSX-53TX)
F
G
AD
SP/PS ASSY
(VSX-55TXi : AWX8307)
(VSX-53TX : AWX7975)
AJ
PRIMARY ASSY
(AWX7968)
FU1 :
VEK1029 (10A/125V)
AC IN
POWER CORD
: VDG1075
D
E
F
56
VSX-55TXi
7
8
25
1234
3.3 7.1 CH I/O, V-AUDIO, FRONT IN and OPTICAL IN ASSYS
7.1 CH I/O ASSY (VSX-55TXi : AWX8306)
A
CN1301-CN1304 ;
VSX-55TXi : AKB7075
VSX-53TX : AKB7015
A
(VSX-53TX : AWX7973)
(F)
(F) (F)
L
FRONT
R
(F)
E
(F)
B
L
SURROUND
R
MULTI CH IN
CENTER
C
SUB
WOOFER
(S)
(C)
(SB)
(S)
(C)
(SB)
(S)
(S)
(F)
(S)
(SB)
(C)
(SB)
(C)
(SB)
CN1407
E
CN1406
L
SURROUND
BACK
R
D
SUB
WOOFER
CENTER
L
FRONT
E
PRE OUT
SURROUND
SURROUND
F
R
L
R
L
BACK
R
(C)
(F)
(S)
(SB)
Preout
Mute
(C)
(F)
(SB)
(C)
(F)
(S)(S)
(SB)
E
CN1408
26
A
: The power supply is shown with the marked box.
VSX-55TXi
1234
5678
VCR1
VCR2
MULTI-ROOM
IN
OUT
IN
OUT
TV/SAT
IN
DVD/LD
IN
(MR)
L
R
& SOURCE OUT
L
R
L
R
L
R
L
R
L
R
(DVD)
L
R
MR Mute
(DVD)
(MR)
(MR)
(MR)
(MR)
(DVD)
CN1201-CN1203 ;
VSX-55TXi : AKB7075
VSX-53TX : AKB7015
CN1205 ;
VSX-55TXi : AKB7162
VSX-53TX : AKB7009
B
V-AUDIO ASSY
(VSX-55TXi : AWX8313)
(VSX-53TX : AWX7964)
: AUDIO SIGNAL ROUTE (Lch)
(MR)
: AUDIO SIGNAL ROUTE (MULTI-ROOM Lch)
(DVD)
: 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)
: AUDIO SIGNAL ROUTE (CENTER ch)
(D)
: AUDIO SIGNAL ROUTE (DIGITAL)
E
CN1405
OPTICAL IN ASSY
D
(AWX7978)
A
B
C
D
C
L
AUDIO
R
VIDEO
VIDEO INPUT (FRONT)
S VIDEO
56
FRONT IN ASSY (AWX7977)
2DIGITAL/
DTS/MPEG
PCM/
CN3005
U
VSX-55TXi
IN 1
(TV/SAT)
IN 2
(CD-R/TAPE1)
OUT 1
OUT 2
(D)
(D)
(D)
(D)
(D)
(D)
CN1801
H
E
F
B C D
7
8
27
1234
3.4 INPUT CONNECT, RS232C and 12V TRIGGER ASSYS
A
INPUT CONNECT ASSY
E
(AWX7974)
(MR)
CN101
CN1204
B
L 1/3
(MR)
(DVD)
(MR)
MR
Volume
(MR)
(DVD)
(MR)
: AUDIO SIGNAL ROUTE (Lch)
(MR)
: AUDIO SIGNAL ROUTE (MULTI-ROOM Lch)
(DVD)
: 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)
: AUDIO SIGNAL ROUTE (CENTER ch)
B
C
CN201
(MR)
L 1/3
D
CN102
L 1/3
E
CN103
L 2/3
(MR)
(F)
(C)
(S)
(SB)
(SB)
(S) (S)
(F)
(C) (C)
(SB)
(F)
(C)
(F)
(S)
(C)
(SB)
(SB)
(S)
(F)
A
A
A
CN1307
CN1306
CN1308
F
SW Amp.
E
28
1234
VSX-55TXi
5678
VSX-55TXi ONLY
12V TRIGGER
(DC OUT 12V/100mA MAX)
MULTI-ROOM
& SOURCE
REMOTE IN
RS-232C
RS232C ASSY (AWX7966)
F
CAUTION : FOR CONTINUED PROTECTION AGAINST
RISK OF FIRE. REPLACE ONLY WITH
SAME TYPE NO. 491.125 MFD, BY
LITTELFUSE INK. FOR IC1932.
RS-232C
Transceiver
A
B
CN551
L 3/3
C
VSX-53TX ONLY
12V TRIGGER
(DC OUT 12V/100mA MAX)
MULTI-ROOM
& SOURCE
REMOTE IN
12V TRIGGER ASSY (AWX8310)
G
CAUTION : FOR CONTINUED PROTECTION AGAINST
RISK OF FIRE. REPLACE ONLY WITH
SAME TYPE NO. 491.125 MFD, BY
LITTELFUSE INK. FOR IC1932.
AC
CN2403
D
E
CN551
L 3/3
AC
VSX-55TXi
56
CN2403
7
F
F G
29
8
1234
3.5 COAXIAL IN ASSY
A
COAXIAL IN ASSY
H
(VSX-55TXi : AWX8300)
(VSX-53TX : AWX8323)
B
C
D
E
JA1802
(1/2)
VSX-55TXi : AKB7148
VSX-53TX : AKB7131
(CD-R/TAPE1)
IN 3
IN 4
(CD)
JA1802
(2/2)
VSX-55TXi : AKB7148
VSX-53TX : AKB7131
CN1701
D
(D)
(D)
(UD)
(D)
F
CN101
H
S 1/2
30
1234
(UD)
(D)
(UD)
AC
VSX-55TXi
CN2406
(UD)
(UD)
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