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RX-V461/HTR-6040/
DSP-AX461
AV RECEIVER/AV AMPLIFIER

RX-V461/HTR-6040/DSP-AX461 SERVICE MANUAL
For U, C, R, K, A, L and J models
This service manual is the RX-V461/HTR-6040/DSP-AX461 (U, C, R, K, A, L and J models).
For service manual of the RX-V461/RX-V461DAB (T, B, G and E models), please refer to the following publi-
cation number:
RX-V461/RX-V461DAB (T, B, G and E models): 101048



IMPORTANT NOTICE
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already
known and understood by the users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,
we advise all YAMAHA product owners that any service required should be performed by an authorized
YAMAHA Retailer or the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and
service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable
and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please
contact the distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.




I CONTENTS
TO SERVICE PERSONNEL .......................................... 2 DISPLAY DATA ........................................................... 37
FRONT PANELS ........................................................ 3­4 IC DATA ................................................................. 38­52
REAR PANELS .......................................................... 4­7 BLOCK DIAGRAMS .............................................. 53­54
REMOTE CONTROL PANELS ...................................... 8 PIN CONNECTION DIAGRAMS .................................. 55
SPECIFICATIONS / .................................. 9­11 PRINTED CIRCUIT BOARDS ................................ 56­68
INTERNAL VIEW ......................................................... 12 SCHEMATIC DIAGRAMS ...................................... 69­80
DISASSEMBLY PROCEDURES / .......... 12­14 REPLACEMENT PARTS LIST .............................. 81­95
UPDATING FIRMWARE REMOTE CONTROL .............................................. 96­99
..................................... 15­17 Advanced setup / ..... 100
SELF DIAGNOSIS FUNCTION (DIAG)
..................................... 18­36




101041 2007 All rights reserved.
This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.
P.O.Box 1, Hamamatsu, Japan
'07.02
RX-V461/HTR-6040/
DSP-AX461 RX-V461/HTR-6040/DSP-AX461




I TO SERVICE PERSONNEL
1. Critical Components Information AC LEAKAGE
Components having special characteristics are marked s and WALL EQUIPMENT TESTER OR
must be replaced with parts having specifications equal to those
OUTLET UNDER TEST EQUIVALENT
originally installed.

2. Leakage Current Measurement (For 120V Models Only)
When service has been completed, it is imperative to verify
INSULATING
that all exposed conductive surfaces are properly insulated TABLE
from supply circuits.
G Meter impedance should be equivalent to 1500 ohms shunted G Leakage current must not exceed 0.5mA.
by 0.15µF. G Be sure to test for leakage with the AC plug in both polarities.

For U model
"CAUTION"
"F2251, F2252: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME
TYPE 6A, 125V FUSE."

For C model
CAUTION
F2251, F2252: REPLACE WITH SAME TYPE 6A, 125V FUSE.
ATTENTION
F2251, F2252: UTILISER UN FUSIBLE DE RECHANGE DE MÉME TYPE DE 6A, 125V.




WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where
applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and
possibly other entities) to cause cancer and/or birth defects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REA-
SON WHATSOEVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose
eyes to solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands before
handling food.




About lead free solder /
All of the P.C.B.s installed in this unit and solder joints are
soldered using the lead free solder.
Among some types of lead free solder currently available,
it is recommended to use one of the following types for the
repair work.
· Sn + Ag + Cu (tin + silver + copper)
· Sn + Cu (tin + copper)
· Sn + Zn + Bi (tin + zinc + bismuth)

Caution:
As the melting point temperature of the lead free solder is
about 30°C to 40°C (50°F to 70°F) higher than that of the lead
solder, be sure to use a soldering iron suitable to each solder.


2
RX-V461/HTR-6040/
RX-V461/HTR-6040/DSP-AX461




DSP-AX461
I FRONT PANELS
RX-V461 (U, C models)




RX-V461 (R, K, A, L models)




HTR-6040 (U, C models)




3
RX-V461/HTR-6040/
DSP-AX461 RX-V461/HTR-6040/DSP-AX461




HTR-6040 (K model)




DSP-AX461 (J model)




I REAR PANELS
RX-V461 (U, C models)




4
RX-V461/HTR-6040/
RX-V461/HTR-6040/DSP-AX461




DSP-AX461
RX-V461 (R model)




RX-V461 (K model)




RX-V461 (A model)




5
RX-V461/HTR-6040/
DSP-AX461 RX-V461/HTR-6040/DSP-AX461




RX-V461 (L model)




HTR-6040 (U, C models)




HTR-6040 (K model)




6
RX-V461/HTR-6040/
RX-V461/HTR-6040/DSP-AX461




DSP-AX461
DSP-AX461 (J model)




7
RX-V461/HTR-6040/
DSP-AX461 RX-V461/HTR-6040/DSP-AX461




I REMOTE CONTROL PANELS
· RAV328 · RAV310
RX-V461 (U, C models) RX-V461 (R, K, A, L models)
HTR-6040 (U, C models) HTR-6040 (K model)
DSP-AX461 (J model)




8
RX-V461/HTR-6040/DSP-AX461




I SPECIFICATIONS
I Audio Section /
"iPod" is a trademark of Apple Computer, Inc., registered in the U.S.
Minimum RMS Output Power (Power Amp. Section) / Component Video Signal Level (U, C, R, K, A, L models) Finish / and other countries.
(1 kHz, 0.9 % THD) Y ............................................................................ 1 Vp-p / 75 ohms [RX-V461]
FRONT L/R, CENTER, SURROUND L/R D4-Video Signal Level / (J model) Gold color ............................................................... R, K, L models
U, C models (8 ohms) .................................................... 100 W/ch Cb/Cr .................................................................. 0.7 Vp-p / 75 ohms Black color ........................................................ U, C, R, A models
R, K, A, L, J models (6 ohms) ....................................... 100 W/ch Titanium color ........................................................ R, K, L models
Video Maximum Input Level /
Maximum Power / (JEITA) (1 kHz, 10 % THD) Silver color ............................................................ U, R, A models
.............................................................................. 1.5 Vp-p or more
FRONT L/R, CENTER, SURROUND L/R [HTR-6040]
Signal to Noise Ratio / (IHF) Black color .................................................................. U, C models
U, C models (8 ohms) .................................................... 135 W/ch ................................................................................... 50 dB or more
R, K, A, L, J models (6 ohms) ....................................... 135 W/ch Silver color ................................................................. U, K models
Monitor Out Frequency Response / [DSP-AX461]
Dynamic Power Per Channel / (IHF) (VIDEO CONV. OFF) Gold color .......................................................................... J model
U, C models (8/6/4/2 ohms) ............................. 110/130/175/185 W Component video signal (U, C, R, K, A, L models)
R, K, A, L, J models (6/4/2 ohms) ........................... 105/135/165 W Accessories /
.................................................................... 5 Hz to 60 MHz, -3 dB
Remote control x 1, Batteries (Manganese dry) x 2, Indoor FM an-
Dynamic Headroom / [RX-V461] D4-video signal (J model) ............................. 5 Hz to 60 MHz, -3 dB
tenna x 1, AM loop antenna x 1, Optimizer microphone x 1
U, C models (8 ohms) .......................................................... 0.41 dB · DIMENSIONS
I FM Section /
Input Sensitivity/Input Impedance /
* Specifications are subject to change without notice due to product




(7/8")
(1 kHz, 100 W, 8 ohms) Tuning Range /




21.7
CD, etc. ............................................................ 200 mV / 47 k-ohms U, C models ........................................................ 87.5 to 107.9 MHz improvements.
MULTI CH INPUT R, L models ............................ 87.5 to 108.0 / 87.50 to 108.00 MHz
FRONT L/R, CENTER, SURROUND L/R, SUBWOOFER K, A models ..................................................... 87.50 to 108.00 MHz
.................................................................... 200 mV / 47 k-ohms J model ................................................................. 76.0 to 90.0 MHz U .......... U.S.A. model C ...... Canadian model
Maximum Input Signal / (1 kHz, 0.5 % THD, Effect on) 50dB Quieting Sensitivity / 50 dB (IHF) (1 kHz, 100 % Mod.) R .......... General model K ...... Korean model
(U, C, R, K, A, J models) Mono ..................................................................... 2.8 µV (20.2 dBf) A .......... Australian model L ....... Singapore model
CD, etc. ....................................................................... 2.0 V or more J ........... Japanese model




274.9 (10-13/16")
Signal to Noise Ratio / (IHF)




317.6 (12-1/2")
Output Level/Output Impedance / Mono / Stereo ............................................................. 73 dB / 70 dB
REC OUT ........................................................ 200 mV / 1.2 k-ohms Harmonic Distortion / (1 kHz)
SUBWOOFER (2 ch STEREO and FRONT SP: Small) Mono / Stereo ............................................................. 0.5 % / 0.5 %
............................................................................. 4 V / 1.2 k-ohms
Antenna Input / ......................... 75 ohms unbalanced
Headphone Jack Rated Output/Impedance /
I AM Section /
CD, etc. (1 kHz, 200 mV, 8 ohms) ....................... 0.4 V / 470 ohms
Tuning Range /
Frequency Response / (10 Hz to 100 kHz) U, C models .......................................................... 530 to 1,710 kHz
CD, etc. to FRONT L/R .................................................... 0 / -3.0 dB R, L models ................................... 530 to 1,710 / 531 to 1,611 kHz Manufactured under license from Dolby Laboratories.
K, A, J models ....................................................... 531 to 1,611 kHz "Dolby", "Pro Logic", and the double-D symbol are trademarks of
Total Harmonic Distortion /
Dolby Laboratories.




(13/16")
(1 kHz, 50 W, direct stereo to FRONT L/R SP OUT) Antenna Input / .................................... Loop antenna




21
U, C models (8 ohms) ................................................ 0.06 % or less
R, K, A, L, J models (6 ohms) ................................... 0.06 % or less I General /
Signal to Noise Ratio / (IHF-A Network) Power Supply /




151 (5-15/16")
(Direct stereo to input shorted SP OUT) U, C models ........................................................... AC 120 V, 60 Hz




130 (5-1/8")
200 mV ....................................................................... 98 dB or more R, L models ................................. AC 110-120/220-240 V, 50/60 Hz
250 mV ..................................................................... 100 dB or more K model .................................................................. AC 220 V, 60 Hz
A model .................................................................. AC 240 V, 50 Hz "DTS" and "DTS Digital Surround" are registered trademarks of Digi-
Residual Noise / (IHF-A Network)
J model ............................................................ AC 100 V, 50/60 Hz tal Theater Systems, Inc.
FRONT L/R SP OUT ................................................ 150 µV or less
Power Consumption /
Channel Separation /
U, C models ............................................................ 240 W / 320 VA
CD, etc. (Input 5.1 k-ohms shorted, 1 kHz / 10 kHz) 435 (17-1/8")




(13/16")
R, K, A, L models ................................................................... 240 W
...................................................... 60 dB or more / 45 dB or more




21
J model .................................................................................. 180 W
Tone Control Characteristics /
Standby Power Consumption (reference data) /
BASS
Boost/Cut ............................................................ ±10 dB (100 Hz) "SILENT CINEMA" is a trademark of YAMAHA CORPORATION.
................................................................................................ 0.8 W Unit: mm (inch)
TREBLE
Boost/Cut ............................................................ ±10 dB (20 kHz) Maximum Power Consumption / (5 ch drive, 10 % THD)
R, L models ............................................................................ 530 W
Filter Characteristics /
FRONT, CENTER, SURROUND small (H.P.F.) AC Outlets /
................... fc=40/60/80/90/100/110/120/160/200 Hz, 12 dB/oct. 2 switched outlets
SUBWOOFER (L.P.F.) U, C, J models ................................................... 100 W max. total
................... fc=40/60/80/90/100/110/120/160/200 Hz, 24 dB/oct. R, L models .......................................................... 50 W max. total The XM name and related logos are registered trademarks of XM
1 switched outlet Satellite Radio Inc.
A model ...................................................................... 100 W max.
I Video Section /
Dimensions / (W x H x D)
Video Signal Type (Gray Back) /
..................... 435 x 151 x 317.6 mm (17-1/8" x 5-15/16" x 12-1/2")
U, C, R, J models ................................................................... NTSC Neural SurroundTM name and related logos are trademarks owned by
K, A, L models ........................................................................... PAL Weight /
...................................................................... 8.1 kg (17 lbs. 14 oz.) Neural Audio Corporation.
Composite Video Signal Level /
.............................................................................. 1 Vp-p / 75 ohms
S-Video Signal Level /
Y ............................................................................ 1 Vp-p / 75 ohms
C ..................................................................... 0.286 Vp-p / 75 ohms

9
RX-V461/HTR-6040/DSP-AX461



· SCENE TEMPLATE

Program Select (Default)
SCENE name Contents Source
Mode Sub-mode U, C models R, K, A, L, J models
DVD Viewing DVD Movie DVD STRAIGHT ­ O (SCENE 1) O
DVD Movie Viewing DVD MOVIE THEATER Movie Dramatic O O (SCENE 1)
DVD Live Viewing DVD MUSIC Pop/Rock O O
DVR Viewing DVR DVR MOVIE THEATER Movie Dramatic O O
Disc Hi-fi Listening DVD-Audio/SA-CD/CD Music Disc DVD DIRECT STEREO ­ O O
Music Disc Listening DVD STEREO 2ch Stereo O (SCENE 2) O (SCENE 2)
Disc Listening DVD STEREO 5ch Stereo O O
CD Hi-fi Listening CD Music Disc CD DIRECT STEREO ­ O O
CD Listening CD STEREO 2ch Stereo O O
CD Music Listening CD STEREO 5ch Stereo O O
Radio Listening TUNER/RADIO FM/AM FM/AM (TUNER) MUSIC ENHANCER 5ch Stereo O (SCENE 4) O (SCENE 4)
XM Listening (U, C models) XM XM MUSIC ENHANCER 5ch Stereo O ­
iPod Listening DIGITAL AUDIO PLAYER iPod DOCK (V-AUX) MUSIC ENHANCER 5ch Stereo O O
TV Viewing TV DTV/CBL STRAIGHT ­ O (SCENE 3) O (SCENE 3)
TV Sports Viewing DTV/CBL ENTERTAINMENT TV Sports O O
Game Playing GAME V-AUX ENTERTAINMENT Game O O




· SOUND/SURROUND SELECT MENU

Sound Field Parameters /

DSP LEVEL MUSIC ENHANCER
MIN, [MID], MAX LOW, [HIGH]
STEREO 2ch Stereo
5ch Stereo
MUSIC Pop/Rock O
Hall O
Jazz O
ENTERTAIN Game O
TV Sports O
MOVIE Movie Spacious O
Movie Dramatic O
MUSIC ENHANCER Music Enh. 2ch O
Music Enh. 5ch O


Surround Decoders /

PANORAMA DIMENSION CENTER WIDTH
ON, [OFF] -3, [STD], +3 0, 1, 2, [3], 4, 5, 6, 7
DECODING FORMAT Dolby Digital
DTS
AAC (J model)
POST DECODING FORMAT Dolby Pro-Logic
Dolby Pro Logic II Music O O O
Dolby Pro Logic II Movie
Dolby Pro Logic II Game
Neural Surround (U, C models)




10
· SET MENU TABLE /

CATEGORY MAIN MENU SUB MENU SELECT MENU VALUE [INITIAL]
AUTO SETUP Use this feature to automatically adjust speaker and system parameters.

MANUAL SETUP 1 SOUND MENU A) SPEAKER SET FRONT B : FRONT [FRONT] / ZONE B
FRONT SP : LARGE SMALL / [LARGE]
CENTER SP : SML NONE / [SML] / LRG
SUR. L/R SP : SML NONE / [SML] / LRG
LFE/BASS OUT : BOTH SWFR / FRONT / [BOTH]
CROSS OVER : 80 Hz 40 / 60 / [80] / 100 / 110 / 120 / 160 / 200 Hz
SUBWOOFER PHASE : NORMAL [NORMAL] / REVERSE
B) SPEAKER LEVEL FL · · · · · || · · · · ·
FR · · · · · || · · · · ·
C · · · · · || · · · · ·
-10 dB to +10 dB [CENTER (0)], 1dB step
SL · · · · · || · · · · ·
SR · · · · · || · · · · ·
SWFR · · · · · || · · · · ·
C) SP DISTANCE UNIT : feet feet / meters
FRONT L : 10.0 ft
FRONT R : 10.0 ft
CENTER : 10.0 ft
feet : 1.0 to 80.0 ft [10.0 ft], 0.5 ft step
SURR L : 10.0 ft
SURR R : 10.0 ft
SWFR : 10.0 ft
FRONT L : 3.00 m
FRONT R : 3.00 m
CENTER : 3.00 m
meters : 0.30 to 24.00 m [3.00 m], 0.10 m step
SURR L : 3.00 m
SURR R : 3.00 m
SWFR : 3.00 m
D) CENTER GEQ TEST : > OFF ON [OFF] / ON
100 Hz - - || - - 0 dB
300 Hz - - || - - 0 dB
1 kHz - - || - - 0 dB -6 dB to +6 dB [0 dB], 0.5 dB step
3 kHz - - || - - 0 dB
10 kHz - - || - - 0 dB
E) LFE LEVEL SPEAKER : 0 dB -20 dB to 0 dB [0 dB], 1 dB step
HEADPHONE : 0 dB -20 dB to 0 dB [0 dB], 1 dB step
F) DYNAMIC RANGE SP D. R. : MAX MIN / STD / [MAX]
HP D. R. : MAX MIN / STD / [MAX]
G) AUDIO SET MUTE TYPE : FULL [FULL] / -20 dB
A. DELAY : 0 ms [0 ms] to 160 ms, 1 ms step
MAX VOL. : +16 dB [+16dB] / +10dB / +5dB / 0dB / -5dB / -10dB / -15dB / -20dB / -25dB / -30dB
INI. VOL. : OFF [OFF] / -80 dB to +16 dB, 1 dB step
(J model) DUAL MONO : MAIN [MAIN] / SUB / ALL
2 INPUT MENU A) I/O ASSIGN COAXIAL IN (1) : DVD DVR / V-AUX / DTV/CBL / DVD / MD/CD-R / CD

(U, C, R, K, A, L models) OPTICAL IN (2) : DTV/CBL DVR / V-AUX / DTV/CBL / DVD / MD/CD-R / CD

OPTICAL IN (3) : CD DVR / V-AUX / DTV/CBL / DVD / MD/CD-R / CD
COAXIAL IN (1) : MD/CD-R DVR / V-AUX / DTV/CBL / DVD / [MD/CD-R] / CD
OPTICAL IN (2) : DVT/CBL DVR / V-AUX / [DTV/CBL] / DVD / MD/CD-R / CD
(J model)
OPTICAL IN (3) : DVD DVR / V-AUX / DTV/CBL / [DVD] / MD/CD-R / CD

OPTICAL OUT (4) : MD/CD-R DVR / V-AUX / DTV/CBL / DVD / [MD/CD-R] / CD
B) INPUT RENAME CD / MD/CD-R / TUNER / DVD / DTV/CBL / V-AUX (DOCK) / DVR / MULTI CH INPUT / XM
(U, C models)
Input is possible to 8 characters /
Input possible Character type / : Capital / A to Z, Small / a
to z, Figure / 0 to 9, Space / , Marks / #*+,-./:<>?
C) VOLUME TRIM CD / MD/CD-R / TUNER / DVD / DTV/CBL / V-AUX( DOCK) / DVR / MULTI CH INPUT / XM
(U, C models)
-6.0 dB to +6.0 dB, [0.0 dB], 1 dB step
D) DECODER MODE [AUTO] / LAST
CD / MD/CD-R / DVD / DTV/CBL / [AUTO] / DTS / AAC (J model)
V-AUX / DVR
E) MULTI CH SET [LAST] / DVR / V-AUX / DTV/CBL / DVD
3 OPTION MENU A) DISPLAY SET DIMMER :0 -4 to [0], 1 step
FL SCROLL : CONT [CONT] / ONCE
OSD SHIFT :0 -5 to +5, [0], 1step
OSD-SOURCE : 30 s 10s / [30s] / OFF
OSD-AMP : 30 s 10s / [30s] / OFF
B) MEMORY GUARD MEMORY GUARD : OFF [OFF] / ON
C) AUDIO SELECT DEFAULT : AUTO [AUTO] / LAST
D) PARAM. INI [NO] / YES
(U, C models) E) XM RADIO SET XM ANTENNA : NONE [NONE] / 0 % to 100 %, 1 % step
SIGNAL INFO 1 FORMAT (Signal format) Analog / PCM / DolbyD / DTS / AAC (J model) / Digital / --- / ???
2 SAMPLING xxx kHz
3 CHANNEL 3/2/0.1 (Front/Surround/LFE) / 1+1
4 B.RATE (Bit rate) xxx kbps
5 FLAG DolbyD / DTS / PCM / None
RX-V461/HTR-6040/DSP-AX461




11
RX-V461/HTR-6040/DSP-AX461




I INTERNAL VIEW I DISASSEMBLY PROCEDURES
(Remove parts in the order as numbered.)
· Top view
Disconnect the power cable from the AC outlet.
1 2 3 4 5 6 78 9 1 Power Transformer
2 OPERATION (3) P.C.B.
1. Removal of Top Cover
3 OPERATION (4) P.C.B.
a. Remove 4 screws (1), 4 screws (2) and 1 screw (3). 1 2 3
4 OPERATION (5) P.C.B. (R, L models)
(Fig. 1)
5 VIDEO (4) P.C.B.
b. Slide the top cover rearward to remove it. (Fig. 1)
6 Tuner
7 VIDEO (3) P.C.B.
8 VIDEO (1) P.C.B.
2. Removal of Front Panel Unit
9 DSP P.C.B.
a. Remove 6 screws (4). (Fig. 1) 4
0 MAIN (4) P.C.B.
b. Remove CB191, CB192, CB235, CB261 and CB408.
A MAIN (1) P.C.B.
(Fig. 1)
B OPERATION (2) P.C.B.
c. Remove hook and then remove the front panel unit.
C OPERATION (11) P.C.B.
(Fig. 1)
D OPERATION (6) P.C.B.
E OPERATION (10) P.C.B. 2
C B A 0 F OPERATION (1) P.C.B.
G OPERATION (7) P.C.B.
· Front view
H VIDEO (2) P.C.B.
Top cover 3



1

Front panel unit

D E F G 2
CB261
· Rear view

4
CB235



CB408
4
H CB192
CB191 Hook
4


Fig. 1


3. Removal of VIDEO (1), (2) and (3) P.C.B.s
a. Remove CB193, CB305 and CB322. (Fig. 2)
b. Remove 11 screws (5). (Fig. 3) 5
c. Remove VIDEO (1), (2) and (3) P.C.B.s. (Fig. 2)

4. Removal of DSP P.C.B.
a. Remove 19 screws (6), 3 screws (7), 2 screws (8) 6 7 8
(U, C, R, A, L models) and 2 screws (9) (R, L models).
(Fig. 3)
b. Remove cord stopper. (Fig. 2)
c. Remove rear panel. (Fig. 2) 0
d. Remove 1 screw (0). (Fig. 2)
e. Remove CB512 and CB516. (Fig. 2)
f. Remove the DSP P.C.B. which is connected directly to
the MAIN (1) P.C.B. with connectors. (Fig. 2)
12
RX-V461/HTR-6040/
DSP-AX461
RX-V461/HTR-6040/DSP-AX461


VIDEO (1) P.C.B.
Rear panel DSP P.C.B.
CB305
DSP P.C.B.
CB502
CB501
CB512
Cord stopper

CB516

CB193

0

CB101
CB322
CB104
MAIN (1) P.C.B.

VIDEO (3) P.C.B. VIDEO (2) P.C.B.

Fig. 2



U, C, R, K, A, L models
5 6 8 (U, C, R, A, L models)




7 9 (R, L models)


J model
5 6 8




7

Fig. 3




13
RX-V461/HTR-6040/
DSP-AX461
RX-V461/HTR-6040/DSP-AX461


When checking the P.C.B.:
a. Remove the Top cover. (Fig. 1)
b. Remove 3 screws (7). (Fig. 3) 7
c. Remove 5 screw (A) and 4 screws (B). (Fig. 4) A B
d. Place the P.C.B. upright. (Fig. 5)
e. The rear panel and P.C.B. removed from the chassis
does not work because its grounding is loose.
Be sure to connect the ground of heat sink, rear panel
and MAIN (1) P.C.B. (G103, G104, G105 and ST101) to
the chassis with a ground lead or the like. (Fig. 5)
· Be sure to use the extension cable for servicing for the
following section. (Fig. 6)
DSP P.C.B. CB408_OPERATION (1) P.C.B. CB202:
V2854400 (17P, 300mm)



A B




A A

Fig. 4

Ground lead
Rear panel


MAIN (1) P.C.B.

G104

G103
Rear panel
G105
ST101
DSP P.C.B.
Ground lead



CB408
Ground lead


Fig. 5



OPERATION (1) P.C.B.
V2854400
CB202

Fig. 6
14
RX-V461/HTR-6040/
DSP-AX461
RX-V461/HTR-6040/DSP-AX461



I UPDATING FIRMWARE /
After replacing the following parts with the replacement part,
be sure to write the latest firmware.
· DSP P.C.B.
· IC201 (DSP P.C.B.)

G Required Tools
· DVD or CD player (with DIGITAL OUTPUT (OPTICAL
or COAXIAL) terminal)
· Optical cable (when OPTICAL terminal is used)
· Digital audio pin cable (when COAXIAL terminal is
used)
· Firmware CD
* To make the firmware CD, download the latest firm-
ware from the specified download source to PC.

G Operation Procedures
1. Connect the main unit and DVD/CD player as shown
below. (Fig. 1)

Example of OPTICAL terminal /
Main unit


DVD/CD player




Optical cable




Example of COAXIAL terminal /
Main unit


DVD/CD player




Digital audio pin cable



Fig. 1
15
RX-V461/HTR-6040/
DSP-AX461
RX-V461/HTR-6040/DSP-AX461




2. While pressing the "STANDBY/ON" key and "SPEAK-
ERS A/B/OFF" key of the main unit simultaneously,
connect the power cable of the main unit to the AC
outlet. (Fig. 2)
The FIRMWARE UPDATE mode will then be acti-
vated and "SPDIF Upgrade" is displayed. (Fig. 2)




"STANDBY/ON" key "SPEAKERS A/B/OFF" key


FIRMWARE UPDATE mode
SPDIF Upgrade
Fig. 2



3. Connect the power cable of DVD/CD player to the
AC outlet.
4. Press the "STANDBY/ON" key of the DVD/CD player.
5. Press the "EJECT" key of the DVD/CD player to open
the tray.
6. Put the firmware CD on the tray and close the tray.
7. Press the "PLAY" key of the DVD/CD player.
Then writing of the firmware is started. (Fig. 3)
8. When writing of the firmware is completed, "Up-
grade OK", "Please..." and "Turn off!!" are dis-
played repeatedly. (Fig. 3)