Pioneer VSX-49-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 2002

AUDIO/VIDEO MULTI-CHANNEL AMPLIFIER

VSX-49TXi

STANDBY/ON

STANDBY

VIDEO AUDIO

INPUT SELECTOR

DVD/LD TV/DVD SAT VIDEO

OFF ON

CD-R/

VCR VCR2 VCR3 CD TUNER PHONO

TAPE1/MD

LISTENING MODE SELECTOR

MAC3

MULTI CH
INPUT

MASTER VOLUME

DOWN

UP

VSX-49TXi

AUDIO/VIDEO MULTI-CHANNEL RECEIVER

VSX-49TXi

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

Model Type Power Requirement Remarks

VSX-49TXI KU/CA AC120V

ORDER NO.

RRV2644

For details, refer to "Important symbols for good services" .

T-ZZR AUG. 2002 printed in Japan

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SAFETY 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 traine
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 ma
void the warranty. If you are not qualified to perform the repair of this product properly and safely, yo
should not risk trying to do so and refer the repair to a qualified service technician.

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

B

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

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

C

Health & Safety Code Section 25249.6 – Proposition 65

(FOR USA MODEL ONLY)

1. SAFETY PRECAUTIONS

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

LEAKAGE CURRENT CHECK

Measure leakage current to a known earth ground (water
pipe, conduit, etc.) by connecting a leakage current tester

D

E

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

Reading should
not be above

0.5mA

Earth
ground

Device
under
test

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

Test all
exposed metal
surfaces

Leakage
current
tester

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
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 on the parts list

AC Leakage Test

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[ 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:

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.

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.

A

B

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

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CONTENTS

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

A

B

C

D

E

F

1. SPECIFICATIONS ............................................................................................................................................6

2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................ 8

2.1 PACKING ................................................................................................................................................... 8

2.2 EXTERIOR SECTION.............................................................................................................................. 10

2.3 CHASSIS SECTION ................................................................................................................................12

2.4 REAR PANEL SECTION.......................................................................................................................... 14

2.5 HEAT SINK SECTION.............................................................................................................................. 16

2.6 FRONT PANEL SECTION ....................................................................................................................... 18

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM..........................................................................................20

3.1 BLOCK DIAGRAM ................................................................................................................................... 20

3.2 OVERALL WIRING DIAGRAM................................................................................................................. 28

3.3 FM/AM TUNER MODULE........................................................................................................................ 30

3.4 A/V I/O ASSY........................................................................................................................................... 32

3.5 COMPOSITE ASSY................................................................................................................................. 34

3.6 S-VIDEO ASSY........................................................................................................................................ 36

3.7 V-CONVERT ASSY.................................................................................................................................. 38

3.8 COMPONENT ASSY ............................................................................................................................... 40

3.9 VIDEO CON., MIC AMP, MIC, FRONT A/V and H.P. ASSYS .................................................................. 42

3.10 ANALOG IN & A/D ASSY(1/3) ............................................................................................................... 44

3.11 ANAALOG IN & A/D ASSY(2/3)............................................................................................................. 46

3.12 ANAALOG IN & A/D ASSY(3/3)............................................................................................................. 48

3.13 DISPLAY, INPUT SEL, MULTI JOG and VOL ASSYS ........................................................................... 50

3.14 VR & PRE OUT ASSY(1/3).................................................................................................................... 52

3.15 VR & PRE OUT ASSY(2/3).................................................................................................................... 54

3.16 VR & PRE OUT ASSY(3/3).................................................................................................................... 56

3.17 MOTHER ASSY..................................................................................................................................... 58

3.18 DSP ASSY(1/5)...................................................................................................................................... 60

3.19 DSP ASSY(2/5)...................................................................................................................................... 62

3.20 DSP ASSY(3/5)...................................................................................................................................... 64

3.21 DSP ASSY(4/5)...................................................................................................................................... 66

3.22 DSP ASSY(5/5)...................................................................................................................................... 68

3.23 DSP3 ASSY ........................................................................................................................................... 70

3.24 DAC10 ASSY(1/2).................................................................................................................................. 72

3.25 DAC10 ASSY(2/2).................................................................................................................................. 74

3.26 POWER AMP(L) and POWER AMP(C) ASSYS.................................................................................... 76

3.27 POWER AMP(R), POWER AMP(BR) and POWER AMP(G) ASSYS.................................................... 78

3.28 LOCAL SUPPLY ASSY .......................................................................................................................... 80

3.29 AC PRIMARY, POWER SW, SP(A), FL SUPPLY and STANDBY ASSYS ............................................. 82

3.31 1394 MODULE(1/2) ASSY..................................................................................................................... 86

3.32 1394 MODULE(2/2) ASSY..................................................................................................................... 88

4. PCB CONNECTION DIAGRAM ..................................................................................................................... 90

4.1 FM/AM TUNER MODULE........................................................................................................................ 91

4.2 A/V I/O ASSY........................................................................................................................................... 92

4.3 COMPOSITE ASSY................................................................................................................................. 93

4.4 S-VIDEO ASSY........................................................................................................................................ 94

4.5 V-CONVERT ASSY.................................................................................................................................. 95

4.6 COMPONENT ASSY ............................................................................................................................... 96

4.7 VIDEO CONNECT ASSY......................................................................................................................... 97

4.8 MIC AMP, MIC, FRONT A/V and HEADPHONE ASSYS......................................................................... 98

4.9 ANALOG IN & A/D ASSY ...................................................................................................................... 100

4.10 DISPLAY, INPUT SEL, MULTI JOG, FL SUP. and STANDBY ASSYS .................................................102

4.11 VR & PRE OUT ASSY ......................................................................................................................... 106

4.12 MOTHER ASSY................................................................................................................................... 108

4.13 DSP ASSY ........................................................................................................................................... 112

4.14 DAC10 ASSY....................................................................................................................................... 114

4.15 DSP3 ASSY ......................................................................................................................................... 116

4.16 POWER AMP(L) and POSISTER(L) ASSYS....................................................................................... 117

4.17 POWER AMP(R) and POSISTER(R) ASSYS...................................................................................... 119

4.18 POWER AMP(C), POWER AMP(BR) and POWER AMP(G) ASSYS.................................................. 121

4.19 LOCAL SUPPLY and DSP DIODE ASSYS.......................................................................................... 122

4.20 AC PRIMARY, POWER SW and SP(A) ASSYS................................................................................... 124

4.21 TRANS(A), TRANS(B), DIODE and FUSE ASSYS ............................................................................. 126

4.22 SP(B) ASSY......................................................................................................................................... 127

4.23 1394 MODULE ASSY .......................................................................................................................... 128

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5. PCB PARTS LIST..........................................................................................................................................129

6. ADJUSTMENT ..............................................................................................................................................143

7. GENERAL INFORMATION ...........................................................................................................................144

7.1 DIAGNOSIS............................................................................................................................................144

7.1.1 Teat mode.........................................................................................................................................144

A

7.1.2 Disassembly.....................................................................................................................................148

7.2 PARTS ....................................................................................................................................................152

7.2.1 IC......................................................................................................................................................152

7.2.2 DISPLAY ..........................................................................................................................................160

7.3 REMOTE CONTROL UNIT.....................................................................................................................162

7.3.1 EXPLODED VIEWS and PARTS LIST .............................................................................................162

7.3.2 Remote SCH ....................................................................................................................................164

7.3.3 Remote PCB Diagram......................................................................................................................166

7.3.4 Remote PARTS List..........................................................................................................................168

8. PANEL FACILITIES .......................................................................................................................................169

B

C

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1. SPECIFICATIONS

A

Amplifier Section

Continuous average power output of
160 watts* per channel, min., at 6
ohms, from 20 Hz to 20,000 Hz with no
more than 0.09 %** total harmonic
distortion (front).

Continuous Power Output (6 Ω)

Front ........ 160 W + 160 W (20 Hz-20 kHz, 0.09 %, 6 Ω)

B

C

D

Center .................... 160 W (20 Hz-20 kHz, 0.09 %, 6 Ω)

Surround ......160 W + 160 W (20 Hz-20 kHz, 0.09 %, 6 Ω)

Surr. back .....160 W + 160 W (20 Hz-20 kHz, 0.09 %, 6 Ω)

Continuous Power Output (8 Ω)

Front ........ 130 W + 130 W (20 Hz-20 kHz, 0.09 %, 8 Ω)

Center .................... 130 W (20 Hz-20 kHz, 0.09 %, 8 Ω)

Surround ........... 130 W + 130 W (20 Hz-20 kHz, 0.09 %, 8 Ω)

Surr. back .......... 130 W + 130 W (20 Hz-20 kHz, 0.09 %, 8 Ω)

Audio Section

Input (Sensitivity/Impedance)

PHONO MM ......................................... 4.7 mV/47 kΩ

LINE ..................................................... 382 mV/47 kΩ

Phono Overload level (T.H.D.0.1 %, 1kHz)

PHONO MM...................................................... 120 mV

Frequency Response

PHONO MM..................... 20 Hz to 20,000 Hz ± 0.3 dB

LINE ....................................... 5 Hz to 100,000 Hz dB

Output (Level/Impedance)

LINE ...................................................... 382 mV/2.2 kΩ

Tone Control

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

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

LOUDNESS ............................ +4/+2 dB (100Hz/10 kHz)

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

PHONO MM......................................................... 86 dB

LINE ................................................................... 105 dB

+0
–3

(at volume position -40dB)

Video Section

Input (Sensitivity) .......................................... 1 Vp-p/75 Ω

Output (Level/Impedance)............................. 1 Vp-p/75 Ω

Signal-to-Noise Ratio .............................................. 70 dB

Frequency Response...................... 5 Hz to 10 MHz dB

+0
–3

Component Video Section

Input (Sensitivity) .......................................... 1 Vp-p/75 Ω

Output (Level/Impedance)............................. 1 Vp-p/75 Ω

Signal-to-Noise Ratio .............................................. 70 dB

Frequency Response...................... 5 Hz to 40 MHz dB

+0
–3

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

Signal-to-Noise Ratio ................... Mono: 73 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

Stereo: 38.6 dBf

Stereo: 70 dB (at 85 dBf)

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 ................................... 720 W, 965 VA

Power Consumption in Standby mode ................... 0.65 W

AC Outlet

SWITCHED ...................................... 100 W (0.8 A) MAX

Dimensions ..................... 440 (W) × 203 (H) × 476 (D) mm

Weight (without package) ................... 29.3 kg (64 lb 6 oz)

5

(17-

/16 (W) × 8 (H) × 18-3/4 (D) in.)

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

PHONO MM......................................................... 83 dB

LINE ..................................................................... 93 dB

* Measured pursuant to the Federal Trade Commission’s

Trade Regulation rule on Power Output Claims for
Amplifiers.

** Measured by Audio Spectrum Analyzer.

E

Maintenance of External Surfaces

• Use a polishing cloth or dry cloth to wipe off dust
and dirt.

Furnished

FM wire Antenna ............................................................. 1

AM Loop Antenna ........................................................... 1

“AA” IEC LR6 batteries .................................................... 4

Remote Control Unit ........................................................1

Touch Pen ........................................................................ 1

Cushion for Remote .........................................................4

Microphone ......................................................................1

U-shaped connectors .......................................................2

Operating Instructions...................................................... 1

NOTE:

Specifications and the design are subject to possible
modifications without notice, due to improv

Parts

ements.

• When the surfaces are dirty, wipe with a soft
cloth dipped in some neutral cleanser diluted five
or six times with water, and wrung out well, and
then wipe again with a dry cloth. Do not use
furniture wax or cleaners.

• Never use thinners, benzine, insecticide sprays
or other chemicals on or near this unit, since
these will corrode the surfaces.

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VSX-49TXi

Accessories

Remote control unit
(AXD7295)

AM loop antenna
(ATB7009)

FM wire antenna
(ADH7010)

(APM7003)

AA siz Microphone

(ADG7061)

AC power cord

(AZA7350)

Touch pen

(AEB7167)

Cushion for Remote x4

e IEC LR6

batteries (x4)

+

VOL +

ENTER

FUNCTION

TV

CONTROL

MUTING

MASTER VOLUME

SYSTEM

OFF

MULTI

OPERATION

STANDBY/ON

–

VOL –

CH –

CH +

FUNCTION

use lock

RECEIVER

DVD/LD

VCR1
/DVR

VCR2

VCR3

TV

REMOTE

SETUP

CD-R/
TAPE1

CD

TUNER

VIDEO

SAT

TV

CONTROL

LIGHT

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A

B

C

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2. EXPLODED VIEWS AND PARTS LIST

NOTES:

A

2.1 PACKING

B

C

2

3

10

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.)

Refer to " 7.3 Remote control unit Section."

9

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4

17

16

1

15

11 (2/2)

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12(1/2)

11(1/2)

13

6

D

E

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5

13

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PACKING parts List

Mark No. Description Part No.

1 Power Cord ADG7061
2 FM Wire Antenna ADH7010
3 AM Loop Antenna ATB7009
4 Remote Control Unit AX10KU AXD7295
5 Handle Cover AHX7034

6 Alkaline Dry Cell Battery VEM1021
(LR6, AA)
7 Operating Instructions (English) ARB7268
8 Caution Sheet SP, E ARM7056
NSP 9 Warranty Card EL ARY1026

A

10 Cushion for Remote AEB7167
11 Top Pad AHA7362
12 Bottom Pad AHA7363
13 Spacer AHB7057
14 Packing Case AHD8122

15 Packing Sheet DHL1022
NSP 16 Polyethylene Bag Z21-038
(0.03 x 230 x 340)
17 Microphone APM7003

B

C

D

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2.2 EXTERIOR SECTION

A

12

23

4

20

B

2

12

26

27

25

C

18

Refer to "2.6 FRONT PANEL

D

SECTION."

16

4

13

A

4

6

17

18

25

32

3

D
B

C

22

24

12

12

21

15

14

14

A

D

B

C

13

32

13

28

11

31

1

Refer to "2.3 CHASSIS SECTION."

4

3

12

2

30

20

19

19

5

19

17

9

10

Refer to "2.5 HEAT SINK SECTION."

E

17

9

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8

10

19

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EXTERIOR SECTION parts List

Mark No. Description Part No.

NSP 1 Top Plate BK ANE7298
2 Side Alum BK AAH7095
NSP 3 Side Panel Sheet AMR7284
NSP 4 Tape PNM1249
5 UL Caution Card AAX-313

NSP 6 Energystar Label AAX7876
NSP 7 Bottom Plate B ANF7030
NSP 8 Bottom Plate A Cu ANF7029
9 Insulator Assy VXA2368
10 Screw ABA1054

A

11 Screw BBT30P060FCC
12 Screw FBT40P080FZK
13 Screw ABA7079
14 Screw RBA1099
15 Screw VBA1056

16 Screw ABA1011
17 Screw ABA1050
18 Screw ABA1193
19 Screw IBZ30P090FCC
20 Washer VEC1254

NSP 21 Label VRW162
22 License Label ARW7194
23 Screw BBZ30P080FCC
24 65 Label ARW7050
25 Screw BBT30P100FCC

NSP 26 ICP Caution Label ARW7151
NSP 27 Fuse Caution Label ARW7175
NSP 28 ICP Caution Label ARW7150
29 Binder ZCA-BK1
30 1394Module AXQ7243

B

C

D

31 Nylon Rivet AEC-525

32 Side Panel Sheet B AMR7414

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2.3 CHASSIS SECTION

A

15

33

14

36

43

46

46

49

69

44

30

43

AA

43

C

17

76

43

D

18

43

62

61

53

A

54

8

50

14

53

43

32

27

43

46

65

H

51

52

26

6

43

43

68

55

13

B

45

72

AL

80

48

AK

D

C

E

18

62

68

43

68

47

17

69

69

AI

A

34

48

16

31

47

21

69

45

82

54

69

69

19

57

35

82

79

E

68

43

69

5

57

43

60

25

2
20

49

69

71

26

29

59

7

55

3

AM

64

E

B

C

D

E

F

4

AN

77

22

43

25

45

52

E

12

45

24

23

24

28

65

55

55

81

Refer to "2.4 REAR PANEL SECTION".

46

43

43

44

B

74

35

41

46

46

43

67

46

43

43

F

36

24

F

41

53

43

27

38

50

78

73

63

5637

43

R

1

66

43

58

39

U

9

37

56

65

43

42

40

33

45

43

75

S

10

NON-CONTACT

46

70

SIDE

43

45

45

43

70

T

11

CONTACT SIDE

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CHASSIS SECTION parts List

Mark No. Description Part No.

1 MOTHER Assy AWX8142
2 DIODE Assy AWX7841
3 TRANS (A) Assy AWX7838
4 TRANS (B) Assy AWX8057
5 FUSE Assy AWX7843

6 MIC AMP Assy AWX7872
7 DSP DIODE Assy AWX7958
8 LOCAL SUPPLY Assy AWX7887
9 DAC10 Assy AWK7725
10 DSP Assy AWK7762

11 DSP3 Assy AWK7727

12 Power Transformer (T1) ATS7320
NSP 13 PCB Holder B ANG7388
14 Capacitor (C1, C2) ACH7164
15 Rubber Spacer AEB7244

NSP 16 Earth Plate ANG7381
NSP 17 Joint Plate ANG7382
NSP 18 PCB Base RNE1849
19 Trans Frame ANA7142
20 Radiation Sheet AEE7043

NSP 21 Trans Stabilizer ANG7378
NSP 22 Side Frame L AWA7133
NSP 23 Side Wall L AND7041
NSP 24 Wire Clip (A) VEC1355
NSP 25 Insulator Frame B ANG7377

26 Glass Tube ADN7006
27 Cord Holder RNH1005
28 Panel Stay AND7045
NSP 29 Fan Holder B ANG7373
NSP 30 Wire Saddle DEC1450

NSP 31 Side Wall R AND7043
NSP 32 Flat Cable Clamp AEC7376
NSP 33 Insulator Frame A ANG7376
34 Sub Heat Sink ANH7154
NSP 35 PCB Holder D ANG7392

36 Mica Sheet S AEE7042
37 Bushing 26 AEC7128
NSP 38 PCB Spacer AEC7156
NSP 39 Shield Case A ANK7093
NSP 40 Side Frame R ANA7135

No. Description Part No.

Mark

51 Trans Label AAX7897
52 Screw ABA1014
53 Screw BBT30P060FCC
54 Screw ABA1050
55 Screw ABA1192

56 Screw ABA7084
57 Screw RBA1099
NSP 58 PCB Frame B ANG7386

59 Fuse (FU4, 4A) VEK1023
60 Fuse (FU5-FU8, 2A) VEK1019

61 J29 FFC (17P) ADD7329
(Mother CN5807-DISPLAY CN3001)
62 J30 FFC (11P) ADD7330
(Mother CN5806-MIC AMP CN3207)
63 J16 8P Connector Assy ADX7379
(Local Supply CN4001-FUSE CN1802)

64 J17 3P Connector Assy ADX7380
(Local Supply CN4002-TRANS(B) CN1701)
NSP 65 Binder ZCA-BK1
NSP 66 Card Spacer REC1156
67 PCB Holder PNW2100

68 Locking Card Spacer VEC2234
69 Screw ABA7017
70 PC Support DEC1772
71 Oval head Terminal wire ADX7366
72 J1601 5P,7P Parallel wire ADX7385

73 J5805 9P Connector Assy ADX7378
(Local Supply CN4004-Mother CN5805)
74 5802 Crimp Connector Assy PF06PP-R27
(Mother CN5827-Mother CN5828)
75 PCB Spacer VEC1508

NSP 76 Trans Frame Spacer AEC7400

77 Fuse (FU9-FU10, 1A) VEK1014
78 J4001 2P Connector Assy ADX7407
(Local supply CN4005-DSP CN704)
79 Washer ABE-053
80 Acetate tape AEH7017

81 Clamp DEC1759

82 Glass Tube(6x95) ADN7010

A

B

C

D

E

NSP 41 Tape PNM1249
NSP 42 Shield Case B ANK7107
43 Screw ABA1011
NSP 44 PCB Holder C ANG7389
45 Screw BBZ30P080FCC

46 Screw IBP30P090FCC
47 Screw VBA1056
48 Screw ABA1054
49 Screw ABA1082
50 Screw ABA7076

56

VSX-49TXi

F

7

8

13

1234

2.4 REAR PANEL SECTION

A

16

31

16

25

32

16

33

17

36

21

14

16

16

16

24

34

37

B

2

15

1

A

23

16

30

35

18

AJ

19

20

C

19

29

19

4

19

AD

19

13

AB

3

26

22

D

28

G

B

27

11

Q

L

12

NON-CONTACT

SIDE

CONTACT SIDE

5

E

6

F

7

D

8

C

9

10

E

F

14

1234

VSX-49TXi

>

5678

REAR PANEL SECTION parts List

Mark No. Description Part No.

1 FM/AM Tuner Module AXQ7237
2 SP (B) Assy AWX8151
3 AC PRIMARY Assy AWX7834
4 SP (A) Assy AWX8148
5 VIDEO CONNECT Assy AWX7876

6 V-CONVERT Assy AWX8160
7 COMPONENT Assy AWX7953
8 S-VIDEO Assy AWX8159
9 COMPOSITE Assy AWX7942
10 A/V I/O Assy AWX7938

A

11 VR & PRE OUT Assy AWX7888
12 ANALOG IN & A/D Assy AWX7878
13 Rear Panel ANC8139
14 Screw with Terminal AKE-031
15 AC Inlet Assy ADX7395

16 Screw BBZ30P080FCC
17 Hexagonal Screw ABA7078
18 Screw ABA1193
19 Screw ABA1011

20 Fuse (FU1, 12A/125V) AEK-306

21 Short Pin Plug AKM7005
22 J23 FFC (14P) ADD7334
(SP(A) CN1104-Mother CN5801)
23 J22 FFC (13P) ADD7333
(Yuner CN2705-Mother CN5802)
24 Speaker Sheet 49 AAK7959
25 Cushion Circle AED7052

26 J101 3P Connector Assy D20PYY0365E
(AC Primary CN1105-Power SW CN1301)
27 J5001 8P Connector Assy ADX7382
(VR OUT CN5005

- Power AMP(BR) CN4811)

B

C

D

28 J5002 14P Connector Assy ADX7381
(VR OUT CN5006

- Power AMP(L) CN4801
and Power AMP(R) CN4802)
29 Binder ZCA-BK1

30 1394 Module AXQ7243
31 Fiber washer RBF1045
32 Tape AEH7015
33 Screw BCZ30P060FCC
34 Shield plate AMR7445

35 Acetate tape AEH7018
36 Shield cushion AEB7274
37 Acetate tape ZTA-156A-19

56

VSX-49TXi

E

F

7

8

15

1234

2.5 HEAT SINK SECTION

A

12

B

12

15

6

AG

10

12

15

11

8

14

3

Y

2

X

18

10

15

10

21

1

V

14

13

19

5

22

Z

17

16

16

16

20

19

22

20

16

21

10

10

11

C

4

W

13

D

17

17

E

17

15

12

15

10

12

18

15

12

9

7

AH

F

16

1234

VSX-49TXi

5678

HEAT SINK SECTION parts List

Mark No. Description Part No.

1 POWER AMP (L) Assy AWX7882
2 POWER AMP (R) Assy AWX7883
3 POWER AMP (BR) Assy AWX7885
4 POWER AMP (C) Assy AWX7884
5 POWER AMP (G) Assy AWX7886

6 POSISTER (L) Assy AWX7844
7 POSISTER (R) Assy AWX7846
8 Heat Sink L ANH7148
9 Heat Sink R ANH7162
10 Mica Sheet L AEE7048

A

11 Mica Sheet M AEE7046
NSP 12 PCB Holder A ANG7387
NSP 13 Heat Sink Holder ANG7375
14 Screw ABA1011
15 Screw IBP30P090FCC

16 Screw BMZ30P060FCU
17 Screw RBA1099
18 Screw ABA7076
19 Screw ABA7083
20 Over head Terminal wire(RED) ADX7383

21 Over head Terminal wire(BLUE) ADX7384
22 Washer WA32F100M050

B

C

D

56

VSX-49TXi

E

F

7

8

17

1234

2.6 FRONT PANEL SECTION

A

B

30

29

F

28

40

C

51

37

35

45

66

46

3

58

45

F

44

46

43

46

D

E

46

G

45

66

57

23

J

55

48

27

31

50

33

45

39

G

51

43

55

33

55

27

49

41

34

M

1

A

B

C

47

53

2

K

55

59

46

42

60

4

I

41

38

49

48

36

27

46

AF

26

D

11

40

19

62

5

B

52

63

20

55

54

21

23

17

AC

6

46

24

56

22

46

46

46

61

AE

7

A

C

55

46

N

D

46

22

8

24

23

25

57

46

56

46

46

9

O

46

E

10

P

12

14

E

49

49

13

14

15

1816

65

24

64

22

56

46

49

13

F

18

1234

49

VSX-49TXi

5678

FRONT PANEL SECTION parts List

Mark No. Description Part No.

1 DISPLAY Assy AWX8140
2 HEADPHONE Assy AWX7874
3 FRONT A/V Assy AWX8189
4 MIC & OPT Assy AWX7875
5 STANDBY Assy AWX7901

6 POWER SW Assy AWX7840
7 FL SUPPLY Assy AWX7871
8 INPUT SEL Assy AWX7868
9 MULTI JOG Assy AWX7869
10 VOL Assy AWX7870

11 Front Panel ANB7301
12 Pioneer Badge B PAN1376
13 Rotary Knob L BK AAA7018
14 Plate ANG7198
15 Rotary Knob S BK AAA7015

16 Display Panel AAK7932
17 Panel Base L BK AMB7788
18 Panel Base R BK AMB7791
19 Power Button AAD7440
20 Power Button M AAD7442

21 Washer ABF7008
NSP 22 VR Stabilizer ANG7383
23 Cord Holder RNH-184
24 Nut NK90FCU
NSP 25 Earth Spring ABK7031

No. Description Part No.

Mark

51 Screw ABA7076
52 J33 FFC (3P) ADD7331
(DISPLAY CN3002-STANDBY CN1903)
53 J35 FFC (4P) ADD7332
(SP(A) CN1206-HEADPHONE CN3203)
54 J1101 Parallel Wire 3P D20PYY0365E
(POWER SW CN1301-AC PRIMARY CN1105)

55 Fiber Washer VEC1254
NSP 56 Earth Metal Fitting DE007VC0
NSP 57 Earth Metal Fitting DE012VF0
58 J32 8P Connector Assy ADX7390
(Front A/V CN3204-MIC AMP CN3206)

59 J99 4P Connector Assy ADX7421
(MIC & OPT CN3202-MIC AMP CN3205)
60 J31 5P Connector Assy ADX7386
(MIC & OPT CN3201-Mother CN5804)
61 J1801 4P Connector Assy ADX7377
(FL Supply CN1901-FUSE CN1803)

NSP 62 Panel spacer left L AMR7411
NSP 63 Panel spacer left S AMR7408
NSP 64 Panel spacer right L AMR7412
NSP 65 Panel spacer right S AMR7409
66 Fiber washer AEC7403

A

B

C

26 Door Panel BK ANB7273
NSP 27 Door Cushion AED7051
28 Door Plate AAH7077
29 FL Lens I OR AAK8069
30 Inner Panel AAH7087

31 LED Lens AAK7931
32 • • • •
33 LED Lens PNW2019
34 Panel Base C BK AMB7785
NSP 35 Door Hinge L ANG7379

NSP 36 Door Hinge R ANG7380
37 Door Holder L AMR7373
38 Door Holder R AMR7374
39 Damper Assy AXA7108
40 Screw ABA7074

41 Magnet AMF7004
NSP 42 Input Holder ANG7384
NSP 43 Earth Spring ABH7208
44 Shield plate D AMR7390
45 Screw BBZ30P100FZK

46 Screw BBZ30P080FCC
47 Screw ABA7053
48 Screw BBT30P060FCC
49 Screw ABA1050
50 Screw BBZ20P060FMC

56

VSX-49TXi

D

E

F

7

8

19

1234

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

A

MOTHER

R

ANT

FM/AM TUNER

A

MODULE

CN2705

(13P)

L CH

7 7

CN5802

(13P)

ASSY(1/5)

CN5814

(20P)

TXL TXL

20

CN3401

(20P)

20

ANALOG IN &

L

A/D ASSY

IC2001 TC9164AF

DVD/LD

L

TV L

SAT L

VCR1

B

PLAY L

VCR2

PLAY L

VCR3

PLAY L

VCR3
REC L

C

VCR1

REC L

VCR2

REC L

I

A/V Function Selector

27
26
25

24

22

21
18
19

IC2002 TC9162AF

Function Selector

27
26

24
23
18

21

20

23

20

17

A/V MR

25

22

17

19

(17P)

R

MOTHER
ASSY(2/5)

B

A/V I/O ASSY

IC2051-1/2
UPC4570C

3
2

(MR)

1

IC2053-2/2

BA4558F

CN2002

1 12

MIC

1

CN5821

(17P)

1

MIC

1

2
3

12

MIC & OPT
ASSY(1/2)

D

JA3202
SETUP
MIC

CN3202

VIDEO

L

CN3204

MIC

FV L

22

CN3205

33

CN3206

IC3201-1/2

M5220FP

3
2

MIC AMP

Q3204

1

(F)

(MR)

MR VOL

IC2052

M62429FP

8 7

(REC)

CN2001

(17P)

FV L

CN5820
CN5806

(11P)

5

FV L

711

CN3207

(11P)

H

MIC AMP
ASSY

CN2001

(17P)

(REC)

(MR)

4

8

14

VFUNCL

MR OUTL

RECL

MR
OUT L

PHONE

L

CD L

TAPE1

PLAY L

FL IN

TAPE2

PLAY L

TAPE1
REC L

TAPE2
REC L

SL IN

Refer to section
"3.1.4 1394 MODULE Block".

JA1

JA2

FRONT A/V

J

ASSY

IC3502-2/2
NJM2068D

6
5

E

SLOUT

FLOUT

COUT

SBLOUT

22
23
26
27
19
18

IC3401 TC9163AF

A/D Mode Selector

20

24

17

IC3701-2/2

IC3601-2/2

IC3801-2/2

F

IC3702-2/2

6

6

7

5

5

IC3602-2/2

6

6

7

5

5

IC3802-2/2

6

6

7

5

5

IC3421 AK5383VS

D/A Converter

7

4

5

IC3461 AK5383VS

Surround

D/A Converter

7

4

5

IC3441 AK5383VS

D/A Converter

7

4

5

IC3481 AK5383VS

D/A Converter

7

4

5

Front

C/SW

Back

CN3403

(30P)

(F)

15

15

15

(SB)

15

ADFFDT

7

(S)

ADSRDT

3

(C)

ADCWDT

5

ADSBDT

1

IC3423-2/2

M5220P

5
6

(REC)

(REC)

IC3462-2/2
UPC4570C

5
6

(S)

AO

1394 MODULE

CN401

(22P)

R

MOTHER
ASSY(3/5)

CN5816

(30P)

CN5810

(17P)

7

3

5

1

IC3422 TC9163AF

Audio Function Selector

7

8

4

6

2

IC3901 BU4052BCF

Function Selector

7

CN702

(17P)

AF DATA

AS DATA

AC DATA

AB DATA

27

26
25
23

22
21

19

18

11
15
14

Audio MR

10

14

12

16

24

20

17

13

DIGITAL

IN

R

MOTHER
ASSY(4/5)

OPT

IN

CN705

(22P)

DIR & DIT
DSP 1 & 2

DSP U-COM

RF Demodulator

S

(F)

IC3424-1/2

UPC4570C

(F)

5
6

(S)

SLOUT

MIC & OPT

I

ASSY(2/2)

CN3201

5

OPT5 IN

5

CN5804

CN5809

8

F OPT

COAX

IN

2

DSP ASSY

CN3401

7

COUT

FLOUT

(5P)

(5P)

(9P)

CN703

(9P)

(20P)

CN3402

(F)

(SB)

(C)

SBLOUT

CN709

CN707

12
16

(17P)

14

10

8

MC SBLIN

4

EX FLOUT

2

EX
SBLOUT

EX COUT

6

EX SLOUT

VFUNC
INL

MR LOUT

MC CIN

20

1234

VSX-49TXi

5678

A

(MR)

(SB)

SBLO

SLO

CTO

FLO

R

CN5814

(20P)

12
16

8
4

CN5815

(17P)

2

14

6

10

14

10

6
2

CN5813

(17P)

T

CN501

CN6002

U

MOTHER
ASSY(5/5)

(F)

(SB)

(SB)

CN5820

(17P)

(F)

VFUNCL

4

MR OUTL

8

(C)

(C)

(S)

(S)

(C)

(F)

14

CN5817

(9P)

8
4

1

13

5
9

20

24

28

CN5818

(30P)

3

CN5819

(24P)

RECL

MC C

MC SDL

EXFLIN

EXSBLIN

EXCIN

EXSLIN

SBLIN

SLIN

CIN

FLIN

(F)

(S)

(SBL)

(C)

DSP 3 ASSY

DSP 3

Front Digital

IC6021

DF1706E

F

1 24

CW

S

SB

Filter

D/A Converter

PCM1704U-1

DAC 10 ASSY

IC5043-1/2
UPC4570C

1

IC5083-1/2
UPC4570C

1

IC5181-1/2
NJM2068D

(F)

Voltage Amp

PA9008A

PA9008A

PA9008A

7

(15P)

IC6103

NJM5534DD

2
3

2
3

(SB)

IC5023-1/2
NJM2068D

IC5023-2/2
NJM2068D

IC4101

IC4401

IC4601

V

C

CN4807

1

CN5002

(9P)

8
4

1

13

5
9

20

24

28

CN5001

(30P)

3

CN5003

(24P)

FL

1

SL

3

SBL

5

CT

7

CN4801

(8P)

CN4805

IC6101

1 14

Same as the above circuit.

(C)

2
3

(SB)

2
3

(F)

(C)

(S)

2
3

6
5

IC5181-2/2

NJM2068D

6

1

5

1

7

IC4102,IC4103

IC4402,IC4403

IC4602,IC4603

TC9274N-016

Mode Selector

7

5

4
2

3
16 19
18

8 10

7
13

11
12

Current Amp

PBD001A

PBD001A

PBD001A

POWER AMP (L)
ASSY

7

(15P)

Voltage Amp

W

IC4301

PA9008A

(C)

(C)

CN4808

POWER AMP
(C) ASSY

IC6105-2/2
NJM2068D

6
5

NJM2068D

3

7

2

IC6105-1/2

(F)

1

(C)

(S)

(SB)

EXC

IN

EXSBL

IN

IC5001

CN4807

(15P)

CN6004

6

8

(17P)

VR & PRE OUT

Q

ASSY

Front

Main Volume

IC5021

TC94A07F

(F)

7 5

Surround Back

Main Volume

IC5081

TC94A07F

(SB)

6

14

CG1+

CG1-

(C)

(S)

7 5

L/SW

Main Volume

IC5041

TC94A07F

7 5

Surround

Main Volume

IC5061

TC94A07F

7 5

J4801

(F) (F)

(C)

(S)

(SBL)

CN4805

CN4805

6

CN4806

8

(15P)

IC4302

PBD001A

Current Amp

CN4806

IC4303

PBD002A

Current Amp

(15P)

Pre-Amp

IC5022-1/2

OPA2134PA

3

1

2

Pre-Amp

IC5082-1/2

OPA2134PA

3

1

2

Pre-Amp

IC5042-1/2

OPA2134PA

3

1

2

Pre-Amp

IC5062-1/2

OPA2134PA

3

1

2

12
14
15

Surround Back Selector

1

4

2

3

1

|

4

10

|

13

IC5084-2/2

BU4052BCF

FLO

CO

SLO

SBLO

1

|

4

10

|

13

13

CN4807

(15P)

CN4808

(F)

(SB)

(C)

(S)

CN5006

(14P)

ORG

14

12

10

8

(C)

SB L

PREOUT

CENTER1

SURROUND

FL

SL

SBL

CT

POWER AMP

X

(R) ASSY

(F)

FLO

2

CTO

6

SLO

10

SBO

14

: Audio Signal Route (F)

(C)

: Audio Signal Route (C)

(S)

: Audio Signal Route (S)

(SB)

: Audio Signal Route (SB)

(SBL)

: Audio Signal Route (SBL)

(MR)

: Audio Signal Route (MR)

(REC)

: Audio Signal Route (REC)

L

FRONT

L

L

(F)

(S)

K

HEADPHONE

J1206

3

FBL

3

ASSY

HPL

CN1206

3

RY1201

RY1202

RY1203

RY1204

CN1007

RY1003

3

(4P)

(SBL)

(C)

CN1203

1

4

2

3

AJ

SP (B) ASSY

CN3203

(4P)

CN1201

(C)

(S)

(SBL)

CN1202

(SBL)

PHONES

SPA

FL

FR

SPC

SL

SR

SBL

SBR

SPB

FL

FR

CN1006

B

C

D

E

F

56

VSX-49TXi

7

8

21

1234

A

B

C

D

E

F

Video Block

DVD/LD

TV/HDTV

SAT

VCR1

VCR2

VCR3

Y

C
Y

C
Y

C
Y

C
Y

C
Y

C

CN2301

R

MOTHER
ASSY(1/2)

FRONT A/V

J

ASSY

VIDEO

S-VIDEO

DVD/LD

TV/HDTV

VCR1 IN
VCR2 IN
VCR3 IN

Y

C

SAT

(Y)

(C)

(17P)

CN3204

Selector (COMPOSITE)

Selector (COMPOSITE)

14

15

2

5

1

12

4

(C)

14

15

2

5

1

12

4

14 13

FY

FC

CN5823

14 13

F-VIDEO

5

FV-Y

6

FV-C

8

CN3206

(8P)

IC2101

TC74HC4051AFT

Video Function

14 3
15

2
5
1

12

4

14 3
15

2
5

IC2107

TC74HC4051AFT

Video MR Function

(17P)

H

5
6
8

(8P)

TC74LVX4051FT

Video Function

Selector (Y)

3

(C)

3

IC2302

TC74LVX4051FT

Video Function

Selector (C)

CN5806

(11P)

FV-C

7

FV-Y

9

F-VIDEO

10

FV

18

CN5822

(19P)

MIC AMP
ASSY

2
3
5

CN3207

(11P)

TC74HC4053AFT

OSD Input

5 4
3

TC74HC4053AFT

I/O Selector

13 14

CVOUT

Q2108

C

IC2301

IC2303

TC74HC4053AFT

(Y) (Y)

F-VIDEO
FV-Y
FV-C

CN2101

(19P)

IC2103

Selector

IC2102

(OSD)

S/OSD SW (Y)

5

13

12

(Y)

(OSD)(OSD)

TC74HC4053AFT

S/O OSD SW (C)

(C)

5

13

12

(C)

2

FV

18

VI

VO

151

IC2104

13 15

PDC084A

OSD

IC2304

(C)

VIN

(OSD)

14

(Y)

14

15

(C)

VOUT
3 71

IC2105-1/2
TK15420M

+6dB AMP

3
2

6
5

IC2105 (2/2)

CVIN

4

4

OSD

TK15420M

+6dB AMP

COMPOSITE ASSY

(C)

(C)

(OSD)

3 15

C

OSD

(OSD)

CN2102

(12P)

1

7

(Y)

(C)

(Y)

Y

(Y)

(C)

CN2306

(8P)

75Ω

75Ω

(Y)

(C)

(Y)

(C)

(Y)
(C)

(OSD)

(OSD)

G

VIDEO
CONNECT
ASSY

MONITOR
OUT

MR
OUT

COMPONENT

S-VIDEO ASSY

D

IC2307-1/2
TK15420M

+6dB

3

1

2

IC2307-2/2
TK15420M

+6dB

6

7

5

IC2308

NJM2296M

REC OUT Selector (Y)

13

3

NJM2296M

REC OUT Selector (C)

13

3

IC2309

OSD

VIN

VOUT

OSD

CN3302

(8P)

Y

1

C

3
5

1
3
7

CN3301

(12P)

1

15

11

1

15

11

(OSD)

(Y)
(C)

(OSD)

CN3303

CN2502

F

COMPONENT
ASSY

IC2501

TC74LVX4052FT

Video Function

Selector (CY)

Y

Cr

14 13

5

IC2502

TC74LVX4052FT

Video Function

Selector (Cb, Cr)

IN1

Cb

(Y)

(C)

(C)

(10P)

(10P)

75Ω

Y

MONITOR
OUT

C

75Ω

75Ω

Y

MONITOR
OUT 2

C

75Ω

(Y)

(C)

(Y)
(C)

(OSD)

(Cb)

(CY)

3 15

CbOUT

CYOUT

3 15

(Cb)

(CY)

13

(Cb)

(CY)

1314

(CY)

(Cb)

3

(C)

CN3304

(18P)

1
9
3
5

7
15
13

(Cr)

11

CrOUT

(Cr)

TC74LVX4053FT

Input SW

(COMPONENT)

4315114

(Cr)

3
2

(CY)

6

(Cb)

5

3
2

(Cr)(Cr)

IC2106-1/2

OPA2652U

+6dB AMP

Y

VCR1 OUT

C
Y

VCR2 OUT

Y

VCR3 OUT

VIN
VOUT

(Y)

Y

(C)

C

(OSD)

OSD
CYOUT
CbOUT
CrOUT

IC2503

(CY)

1

75Ω

IC2105-1/2,2/2

OPA2652U

+6dB AMP

(Cb)

75Ω

7

75Ω

1

(Cr)

(CY)

(Cb)

(Cr)

Y

Cb

Cr

22

1234

VSX-49TXi

5678

Display Block

M

IC3002

BU2092F

LED Driver

REMOTE

RECEIVER

UNIT

SR IN

SR OUT

A/V I/O

B

ASSY

(Y)

(C)

DISPLAY ASSY

IR IN
RMC

SR OUT

17
16
15

CN5821

(17P)

17
16
15

CN2002

(17P)

: VIDEO SIGNAL ROUTE
: VIDEO SIGNAL ROUTE (Y)
: VIDEO SIGNAL ROUTE (C)

V3001

FL Display

IC3001

PD5686A

Display U-COM

CN3001

11

RMC

CN5807

7

IC3001

PD5685A9

Main U-COM

Control Signal

(CY)

(Cb)

(Cr)

3002 3102

3003 3103

3004 3104

(17P)

(17P)

R

MOTHER
ASSY (2/2)

: Y SIGNAL ROUTE (COMPONENT)
: Cb SIGNAL ROUTE (COMPONENT)
: Cr SIGNAL ROUTE (COMPONENT)

O

MULTI JOG
ASSY

P

VOL ASSY

N

INPUT SEL
ASSY

(OSD)

: VIDEO SIGNAL ROUTE (OSD)

A

B

C

VIN

VOUT

OSD
CYOUT
CbOUT

CrOUT

1
9

Y

3

C

5

7
15
13
11

CN2852

(18P)

(Y)
(C)

(OSD)

(Cr)

(CY)
(Cb)

(Cr)

Q2904

(Cb)

5

(CY)

V-CONVERT

E

ASSY

IC2851

TC90A49F

Y/C SEP.

YOUT

AIN

COUT

IC2859-1/3

TC74LVX4053FT

(Y)

(C)

(Cb)

OSD SW (Y)

14 13

LPF (Chroma)

(C)

(Cr)

IC2854-1/2
TK15420M

2
3

(C)

(Y)

1

IC2857-2/2
TK15420M

5
6

0dB Buffer

3

2

IC2857-1/2
TK15420M

Q2853

(Y) (Y)

24

20

Q2854

(OSD)

(CY)

IC2855-1/2
TK15420M

Y 0dB Buffer

3

1

2

IC2859-2/3

TC74LVX4053FT

(C) (C)

15 1

IC2860

TC74LVX4053FT

OSD SW (C)

(C)

3 4
5

(Y)

(OSD)

7

1

3 4
5

IC2859-3/3

TC74LVX4053FT

(Y)

(C)

Chroma Decoder

(C)

(Y)

IC2853

TA1270BF

6820

(CY)

22

21

(C)

(Y)

(Cb)

(Cr)

(Y)

IC2856-1/2
TK15420M

Y Invert Buffer

2

1

3

IC2855-2/2
TK15420M

C 0dB Buffer

6

7

5

IC2854-2/2
TK15420M

0dB Buffer

IC2858-2/2
TK15420M

0dB Buffer

IC2858-1/2

TK15420M

0dB Buffer

IC2856-2/2
TK15420M

Y/C MIX

5

7

6

6

(CY)

7

5

6

(Cb)

7

5

3

2

(Cr)

1

(CY)

(Cb)

(Cr)

D

E

F

56

VSX-49TXi

7

8

23

1234

A

B

C

D

E

Power Supply Block

SP (B) ASSY

AJ

RY1002

CN1002

FU1

LIVE

NEUTRAL

1

2

RY1001

AM

(3P)

VL AC1

VL AC2

5
4
3
2
1

7
6
5
4
3
2

1

3

VP AC2
VP AC1
VD AC2
VD CT
VD ACT

VA AC2

VA CT
VA AC1
FL AC2
FL AC1

FL VF

VH AC1

VH AC2

AK

DIODE ASSY

TRANS (A)
ASSY

T1

Power Transformer

IC1703

D1701

CN1601

CN1702

CN1701

AN

TRANS (B)
ASSY

POWER AMP

V

-VH

+VH

(L) ASSY

10
11

CN4805

(15P)

+VH

-VH

W

+VH

-VH

CN4807

POWER
AMP (C)
ASSY

10
11

(15P)

+13V

RY-24V

GRY

BRN

CN1801

CN4803

CN4804

D1501
D1502

FU4 4A

12
11

FU5 2A

10

9

FU6 2A

8
7

FU7 2A

6

FU8 2A

5
4
3
2

(12P)

AL

FUSE
ASSY

7
6

(11P)

5
6

(9P)

RY-24V

CN1005

ST+12V

1

RY-24V

7

CN1001

(10P)

1

9

3

2

1

CN1003

RED

+VL (+54V)

BLU

-VL (-54V)

CN1802 CN4001

VP AC2

1

VP AC1

2

VD AC2

3

VD CT

4

VD AC1

5

VA AC2

6

VA CT

7

VA AC1

8

FL AC2 AC2

1

FL AC1

2

FL VF

3

CN1803

(4P)

M

DISPLAY
ASSY

-VH
7

+VH

6

CN4809

(11P)

-VH
5

+VH

6

CN4810

(9P)

CN1103

(8P)

7

1

7

CN1102

(7P)

T1101

1

9

CN1101

(10P)

AB

1
2
3
4
5
6
7
8

1
2
3

Q1901

CN1901

(4P)

AE

FL SUPPLY
ASSY

IC1102

NJM79M24FA

REG.

D1101

IC1101

NJM78M56FA

AC PRIMARY
ASSY

AI

DSP DIODE
ASSY

4

4

3

+13V

AC1
AC2

3001

CN1904

D4002

D4003

D4004

1
2
3

CN1902

(4P)

3

AC1
VH

VH

AC1

2
1
4

CN4811

(8P)

J4002

REG.

A+20

CN1105 CN1301

REG.

CN1104

D1903

CN1904

IC4023

IC4024

IC4035

IC4036

CN4002

VH AC1

VH AC2

AC2

123

U+5.6V

ST+5.6V

(14P)

(3P)

1

3

3
5

FAN -27V
ST+5.6V

SW1301

1

POWER

3

AA

LOCAL SUPPLY
ASSY

VP+9V

1 1

1

J4002

IC4021

LM2940CT-5.0

IC4022

NJM79M05FA

IC4033

NJM78M56FA

IC4031

LM2940CT-5.0

IC4032

NJM79M05FA

IC4043

IC4047

NJM78M15FA

IC4041

NJM7820FA

IC4042

NJM7918FA

IC4045

IC4046

D4005

1

3

CN3001

(17P)

1
2

Q4051

Q4052

U+5.6V
ST+5.6V

-VH

+VH

V+20

CN5005

REG.

REG.

2
1
4

(8P)

AC

POWER
SW
ASSY

+5V REG.

IO

IC4011

LM10851T-5.0

IO

REG.

IO

REG.

IO

REG.

IO

REG.

IO

REG.

IO

REG.

IO

REG.

IO

REG.

J4004

(6P)

+27VF

1

-27VF

3

+55VH

4

-55VH

6

CN5004

(6P)

IC5002

V+16

NJM78M15FA

V-16

IC5003

NJM79M15FA

REG.

REG.

4 16

J4001

(2P)

CN4004

(9P)

3

1

2

5

3

4

6

7

8

CN5003

RY-24V

FAN -27V

+5VP

+5.6VU

+5.6VV

-5.6VV

+15VT

+20VA

-20VA

5
7
8

10

(24P)

7

RY-24V

ST+5.6V

+5VD

-5VD

V+27
V-27
V+20
V-20

CN1205

(8P)

3
5

CN5801

(14P)

CN5805

(9P)

1

2

5

3

4

6

7

8

CN5807

(17P)

17
16

5
7
8

10

CN5819

(24P)

AD

SP (A)
ASSY

R

V-5V

+5VP

MOTHER
ASSY

VST5

V+5D

V-5D

V+5U

V+5V

V12T

V+20V

V-20V

V+5U
VST5

V+27

V+20

V-20

F

POWER AMP

X

(R) ASSY

24

POWER AMP

Y

(BR) ASSY

VSX-49TXi

VR & PRE OUT

Q

ASSY

1234

+5VP

CN704

(2P)

CN705

(22P)

5678

A

(16P)

(14P)

V-5D

2

1

T

U

V-15
V+15

1

V+15

V+5D

DSP3
ASSY

IC505

PQ3DZ13

REG.

DAC10
ASSY

IC6001

PQ3DZ13

REG.

V-5D

V+5D

3

7

4

V-15

V-5D

V+5D

41

3 7

VD3C

V+3DD

CN6003

(7P)

VDD5

CN401

(22P)

12
13

AO

1394 MODULE

IC1

NJM2391DL1-33

REG.

V+3D

REG.

IC2

MM1562FF

B

V+2D

S

VDD5

2

13 12

VDD5

DSP ASSY

IC713

PQ3DZ13

REG.

IC305

PQ3DZ13

REG.

IC415

PQ3DZ13

REG.

IC416

PQ7VZ5

REG.

VD3U

VD3A

V+3B

V1RB

CN402

(16P)

2

CN706

(14P)

1

CN501

VD5V

CN6001

VDD5

CN5812

(7P)

V+15

V-15

Q5805

REG.

IC5808

NJM78M15FA

REG.

IC5806

NJM78M15FA

REG.

IC5809

NJM79M15FA

REG.

IC5807

NJM79M15FA

REG.

V+15

VC15

V-15

VE15

VC15
VE15

V+5

V-5

V+20

V-20

CN5802

(13P)

+10V

11 7

CN5821

(17P)

VC15I

3

VE15I

6

CN5823

(17P)

V+5.6V

16

V-5.6V

15

CN5806

(11P)

A+20V

6

A-20V

11

A

CN2705

(13P)

B

CN2002

(17P)

3
6

D

CN2301

(17P)

16
15

H

CN2307

(11P)

6
1

FM/AM TUNER
MODULE

+10V

A/V I/O
ASSY

VC15

VE15

S-VIDEO
ASSY

CN2306

V+5S

V-5S

(8P)

V+5V

7

V-5V

8

MIC AMP
ASSY

A+20V

A-20V

C

CN2102

(12P)

CN3301

(12P)

CN3302

(8P)

7
8

CN3304

(18P)

CN2852

(18P)

COMPOSITE
ASSY

V+5V

V-5V

109

V-5V

V+5V

109

CN3303

1817

G

1817

V+5Z

V-5Z

(10P)

V+5V

7

V-5V

8

VIDEO
CONNECT
ASSY

E

COMPONENT

F

ASSY

CN2502

(10P)

V+5C

7
8

V-5C

V-CONVERT
ASSY

C

D

E

VC15
VE15
V+5D

CN5816

(30P)

CN3403

(30P)

VC15I

18

VE15I

19

VC5A

20

VC5D

21

VC15I
18
19
20
21

VE15I

VC5A

VC5D

L3401

L3402

REG.

VC5AA

VC3A

IC3402

PQ3DZ13

L3421

L3422

L

ANALOG IN & A/D

VC5F

ASSY

VC3F

VSX-49TXi

56

F

7

8

25

1234

A

B

C

¶ 1394 MODULE Block

1394 MODULE

AO

JA1

JA2

RS232C

CN103

(7P)

25,26
29,30

33,34
36,37

IC202

AYW7022

4M

Flash ROM

X201

24.576MHz

53 52

IC201

TSB43CA43GGW

iceLynx-Micro

(Mercury)

BU2370FV

VCO (PLL)

IC101

PD5787A

HOST CPU

IC203

174

167

158,159

163-166

170

60958

SACD_DA

SACD_D0-D5

MCLK

X301

33.8688MHz

40 18

74

76

77-80
83,84

XC2S50-5TQ144C

62

Rate Controller

IC302

K4S641632F-TC75

64M SDRAM

IC301

(FPGA)

PE9014A

X302

36.864MHz

41 15

IC306

PROM

IC403

TC7SZ126FU

60958

23 2 4

M PCM DATA A

31

M PCM DATA 1

29

M PCM DATA 2

30

M PCM DATA 0

28

SACD_D0-D5

10-13
19,20

38

MCLK

IN A OUT Y

63-68

IC401

SM5816AF

DSD Converter

(SACD → LPCM)

(SB)

(C)

(S)

(F)

(C)

46

(S)

45

(F)

47

52

D

1

CLKC

XTAL

3

IN

IC405

CY22381FC

512fs PLL

E

F

26

1234

VSX-49TXi

5678

A

B

(SB)

(C)

(S)

(F)

CN401

(22P)

1394_SPDIF

21

TC74VHC257FT

Multiplexer

(SB)

14
13

(C)

(C)

(S)
(S)

(F)

(F)

5
6

11
10

2
3

TC74VHC257FT

Multiplexer

14
13

(F)

: Audio Signal Route (F)

(C)

: Audio Signal Route (C)

(S)

: Audio Signal Route (S)

(SB)

: Audio Signal Route (SB)

IC405

4A
4B

2A
2B

3A
3B

1A
1B

IC405

4A
4B

(SB)

12

4Y

(C)

7

2Y

(S)

9

3Y

(F)

4

1Y

12

4Y

20

18

19

17

9

IE_BDT

IE_CDT

IE_SDT

IE_FDT

IE_MCK

CN705

1/5

S

C

D

E

56

VSX-49TXi

F

7

8

27

1234

3.2 OVERALL WIRING DIAGRAM

A

FRONT A/V

J

ASSY
(AWX8189)

I

MIC & OPT
ASSY
(AWX7875)

O

MULTI JOG
ASSY
(AWX7869)

AF

STANDBY ASSY
(AWX7901)

M

DISPLAY ASSY
(AWX8140)

B

C

MIC AMP ASSY

H

(AWX7872)

P

VOL ASSY
(AWX7870)

DSP DIODE ASSY
(AWX7958)

POWER AMP (R)
ASSY (AWX7883)

W

POWER AMP (C)
ASSY
(AWX7884)

LOCAL SUPPLY

ASSY

U 1/2, U 2/2

U

DAC 10 ASSY

(AWK7725)

(AWX7887)

AA

POSISTER (R)
ASSY
(AWX7846)

AH

AI

D

S 1/5- S 5/5

1394 MODULE

(AXQ7243)

X V

Z

POWER AMP (G)
ASSY (AWX7886)

AG

POSISTER (L)

ASSY (AWX7844)

1/2, AO 2/2

S

DSP ASSY (AWK7762)

E

AO

AO

G

DSP3 ASSY

(AWK7727)

T

Q 1/3- Q 3/3

POWER AMP (BR) ASSY

Y

(AWX7885)

VIDEO CONNECT ASSY
(AWX7876)

L 1/3- L 3/3

Q

VR & PRE OUT ASSY

(AWX7888)

L

ANALOG IN & A/D ASSY

F

28

1234

(AWX7878)

VSX-49TXi

A/V I/O ASSY

(AWX7938)BCOMPOSITE ASSY

(AWX7942)CS-VIDEO ASSY

D

(AWX8159)

F

COMPONENT ASSY

(AWX7953)

5678

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

INPUT SEL

N

ASSY
(AWX7868)

FL SUPPLY ASSY

AE

(AWX7871)

AL

FUSE ASSY
(AWX7843)

TRANS (B) ASSY

AN

(AWX8057)

POWER TRANSFORMER

AK

DIODE ASSY
(AWX7841)

T1

(ATS7320)

A

B

C

POWER AMP (L)
ASSY (AWX7882)

AD

SP (A) ASSY
(AWX8148)

AB

AC PRIMARY ASSY
(AWX7834)

HEADPHONE

K

ASSY
(AWX7874)

TRANS (A) ASSY

AM

(AWX7838)

AJ

SP (B) ASSY
(AWX8151)

AC

POWER SW
ASSY
(AWX7840)

D

E

E

V-CONVERT

MOTHER ASSY

R

(AWX8142)

ASSY

(AWX8160)

A

FM/AM TUNER

MODULE (AXQ7237)

56

VSX-49TXi

FU1 : AEK-306
(12A/125V)

7

AC INLET ASSY
: ADX7395

8

F

29

1234

3.3 FM/AM TUNER MODULE

A

FM/AM TUNER MODULE (AXQ7237)

A

(FM)

B

(FM)

(FM)

(FM) (FM)

(FM) (FM)

C

(FM)

(AM)

D

(AM) (AM)

(AM)

(FM)

(FM)

(FM)

(AM)

(FM) (FM)

(AM)

E

F

A

30

1234

VSX-49TXi