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AV RECEIVER/AV AMPLIFIER
RX-V1800/HTR-6190/
DSP-AX1800




RX-V1800/HTR-6190/
SERVICE MANUAL




DSP-AX1800
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 AMP ADJUSTMENT 71
FRONT PANELS ........................................................ 3­4 DISPLAY DATA ........................................................... 72
REAR PANELS .......................................................... 5­8 IC DATA ................................................................. 73­84
REMOTE CONTROL PANELS ...................................... 9 BLOCK DIAGRAMS .............................................. 85­87
SPECIFICATIONS / ................................ 10­13 PRINTED CIRCUIT BOARDS .............................. 88­115
INTERNAL VIEW ......................................................... 14 PIN CONNECTION DIAGRAMS ........................ 116­118
DISASSEMBLY PROCEDURES / .......... 14­20 SCHEMATIC DIAGRAMS .................................. 119­137
UPDATING FIRMWARE REPLACEMENT PARTS LIST .......................... 139­174
..................................... 20­33 REMOTE CONTROL .......................................... 175­178
SELF-DIAGNOSTIC FUNCTION ADVANCED SETUP /
34­70 179­181




101063 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
'07.08
RX-V1800/HTR-6190/DSP-AX1800



I TO SERVICE PERSONNEL AC LEAKAGE
1. Critical Components Information WALL EQUIPMENT TESTER OR
Components having special characteristics are marked s OUTLET UNDER TEST EQUIVALENT
and must be replaced with parts having specifications equal
to those originally installed.
2. Leakage Current Measurement (For 120V Models Only)
When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated INSULATING
TABLE
from supply circuits.
RX-V1800/HTR-6190/




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.
DSP-AX1800




For U model
"CAUTION"
"F1, F2: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE
10A, 125V FUSE."

For C model
CAUTION
F1, F2: REPLACE WITH SAME TYPE 10A, 125V FUSE.
ATTENTION
F1, F2: UTILISER UN FUSIBLE DE RECHANGE DE MÉME TYPE DE 10A, 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-V1800/HTR-6190/DSP-AX1800



I SPECIFICATIONS
I Audio Section /
Minimum RMS Output Power (Power Amp. Section) / Headphone Jack Rated Output/Impedance /
(20 Hz to 20 kHz)
FRONT L/R CD, etc. (1 kHz, 40 mV, 8 ohms) ..................... 150 mV / 100 ohms
U, C, R, T, K, A, B, G, E, L models (0.04 % THD, 8 ohms) Frequency Response / (10 Hz to 100 kHz)
........................................................................................ 130 W + 130 W CD, etc. to FRONT L/R (Pure direct) .............................. +0/-3.0 dB
J model (0.06 % THD, 6 ohms) ............................ 130 W + 130 W
RIAA Equalization Deviation / (20 Hz to 20 kHz)
CENTER
PHONO (MM) ................................................................... 0 ±0.5 dB
U, C, R, T, K, A, B, G, E, L models (0.04 % THD, 8 ohms)
RX-V1800/HTR-6190/




.......................................................................................... 130 W Total Harmonic Distortion / (20 Hz to 20 kHz)
DSP-AX1800




J model (0.06 % THD, 6 ohms) .......................................... 130 W PHONO (MM) to REC OUT (1 V) .............................. 0.02 % or less
SURROUND L/R CD, etc. to FRONT L/R SP OUT (65 W, 8 ohms) ..... 0.04 % or less
U, C, R, T, K, A, B, G, E, L models (0.04 % THD, 8 ohms) Signal to Noise Ratio / (IHF-A network)
........................................................................................ 130 W + 130 W PHONO (MM) (Input shorted) to SP OUT
J model (0.06 % THD, 6 ohms) ............................ 130 W + 130 W U, C, R, T, K, L models (5 mV) ............................... 86 dB or more
SURROUND BACK L/R A, B, G, E models (5 mV) ....................................... 81 dB or more
U, C, R, T, K, A, B, G, E, L models (0.04 % THD, 8 ohms) J model (2.5 mV) ..................................................... 80 dB or more
........................................................................................ 130 W + 130 W CD, etc. (Input shorted) to SP OUT
J model (0.06 % THD, 6 ohms) ............................ 130 W + 130 W 250 mV .................................................................. 100 dB or more
Maximum Power / (JEITA, 1 kHz, 10 % THD) Residual Noise / (IHF-A network)
FRONT L/R FRONT L/R SP OUT ................................................ 150 µV or less
R, T, K, L models (8 ohms) .................................. 175 W + 175 W
Channel Separation / (1 kHz/10 kHz)
J model (6 ohms) ................................................. 175 W + 175 W
PHONO (Input shorted) ..................... 60 dB or more/55 dB or more
CENTER
CD, etc. (Input 5.1 k-ohms shorted) ... 60 dB or more/45 dB or more
R, T, K, L models (8 ohms) ................................................. 175 W
J model (6 ohms) ................................................................ 175 W Tone Control Characteristics /
SURROUND L/R BASS
R, T, K, L models (8 ohms) .................................. 175 W + 175 W Boost/Cut ................................................................ ±6 dB (50 Hz)
J model (6 ohms) ................................................. 175 W + 175 W Turnover frequency ............................................................ 350 Hz
SURROUND BACK L/R TREBLE
R, T, K, L models (8 ohms) .................................. 175 W + 175 W Boost/Cut .............................................................. ±6 dB (20 kHz)
J model (6 ohms) ................................................. 175 W + 175 W Turnover frequency ........................................................... 3.5 kHz

Dynamic Power Per Channel (IHF) [U, C, R, T, K, A, L models] ZONE2, ZONE3 Tone Control Characteristics
FRONT L/R (8/6/4/2 ohms) .............................. 160/195/255/335 W [U, C, R, T, K, A, B, G, E, L models]
BASS
Max. Power Per Channel (1 kHz, 0.7 % THD, 4 ohms)
Boost/Cut ............................................................ ±10 dB (100 Hz)
[B, G, E models]
Turnover frequency ............................................................ 450 Hz
FRONT L/R ............................................................. 180 W + 180 W
TREBLE
CENTER ................................................................................ 180 W
Boost/Cut ............................................................ ±10 dB (10 kHz)
SURROUND L/R .................................................... 180 W + 180 W
Turnover frequency ........................................................... 2.0 kHz
SURROUND BACK L/R ......................................... 180 W + 180 W
Filter Characteristics /
Dynamic Headroom [U, C, R, T, K, A, L models]
FRONT, CENTER, SURROUND, SURROUND BACK small (H.P.F.)
8 ohms ................................................................................... 0.9 dB
................... fc=40/60/80/90/100/110/120/160/200 Hz, 12 dB/oct.
IEC Power (1 kHz, 0.04 % THD, 8 ohms) [B, G, E models] SUBWOOFER (L.P.F.)
FRONT L/R ............................................................. 130 W + 130 W ................... fc=40/60/80/90/100/110/120/160/200 Hz, 24 dB/oct.
Damping Factor /
I Video Section /
FRONT L/R (20 Hz to 20 kHz, SPEAKER-A, 8 ohms) ..... 150 or more
Video Signal Type /
Input Sensitivity/Input Impedance / Gray Back
(1 kHz, 100 W/8 ohms) U, C, R, K, J models ............................................................ NTSC
PHONO (MM) ................................................... 3.5 mV / 47 k-ohms T, A, B, G, E, L models ........................................................... PAL
CD, etc. ............................................................ 200 mV / 47 k-ohms Video conversion ............................................................ NTSC/PAL
MULTI CH INPUT
FRONT L/R, CENTER, SURROUND L/R, SUBWOOFER Composite Video Signal Level /
.................................................................... 200 mV / 47 k-ohms .............................................................................. 1 Vp-p / 75 ohms

Maximum Input Signal Level / S-Video Signal Level /
PHONO (MM) (1 kHz, 0.1 % THD) .......................... 60 mV or more Y ............................................................................ 1 Vp-p / 75 ohms
CD, etc. (1 kHz, 0.5 % THD) ...................................... 2.4 V or more C ..................................................................... 0.286 Vp-p / 75 ohms

Output Level/Output Impedance / Component Video Signal Level /
REC OUT .......................................................... 200 mV / 900 ohms Y ............................................................................ 1 Vp-p / 75 ohms
PRE OUT (FRONT L/R, CENTER, SURROUND L/R, Pb/Pr .................................................................. 0.7 Vp-p / 75 ohms
SURROUND BACK L/R) .................................. 1.0 V / 1.2 k-ohms Maximum Input Level /
SUBWOOFER (20 Hz) ....................................... 2.0 V / 1.2 k-ohms VIDEO CONV. OFF .............................................. 1.5 Vp-p or more
ZONE2 OUT [U, C, R, T, K, A, B, G, E, L models] Signal to Noise Ratio /
.......................................................................... 1.0 V / 1.4 k-ohms VIDEO CONV. OFF ................................................... 60 dB or more
ZONE3 OUT [U, C, R, T, K, A, B, G, E, L models]
.......................................................................... 1.0 V / 1.4 k-ohms

10
RX-V1800/HTR-6190/DSP-AX1800




· DIMENSIONS
Monitor Out Frequency Response / AC Outlets /




(7/8")
(VIDEO CONV. OFF) 2 switched outlets Manufactured under license from Dolby Laboratories.




22
Component video signal ............................ 5 Hz to 100 MHz, ±3 dB U, C models ........................... 100 W max. total / 0.8 A max. total "Dolby", "Pro Logic", and the double-D symbol are trademarks of Dolby Laborato-
ries.
D5-video signal [J model] .......................... 5 Hz to 100 MHz, ±3 dB R, T, L models ...................................................... 50 W max. total
HDMI G, E models ........................... 100 W max. total / 0.4 A max. total
HDMI (Ver. 1.3a) ................................................................... Type A J model ............................................................... 100 W max. total
1 switched outlet
I FM Section / A model ...................................................................... 100 W max.
Tuning Range / B model .................................................. 100 W max. / 0.4 A max.




438.5 (17-1/4")
394 (15-1/2")
U, C models ........................................................ 87.5 to 107.9 MHz Dimensions / (W x H x D)
R, L models ............................ 87.5 to 108.0 / 87.50 to 108.00 MHz ......................... 435 x 171 x 438.5 mm (17-1/8" x 6-3/4" x 17-1/4") DTS is a registered trademark and the DTS logos, Symbol, DTS-HD and DTS-HD
T, K, A, B, G, E models .................................. 87.50 to 108.00 MHz Master Audio are trademark of DTS, Inc. © 1996-2007 DTS, Inc. All Rights Re-
Weight / .................................................. 17.0 kg (37 lbs. 8 oz.)
served.
J model ................................................................. 76.0 to 90.0 MHz Finish /
50dB Quieting Sensitivity / (IHF) (1 kHz, 100 % MOD.) [RX-V1800]
Mono ..................................................................... 2.0 µV (17.3 dBf) Gold color .......................................................... R, T, K, L models
Stereo ..................................................................... 25 µV (39.2 dBf) Black color .......................................... U, C, R, A, B, G, E models
Usable Sensitivity / (IHF) Titanium color ................................................... B, G, E, L models "iPod" is a trademark of Apple Inc., registered in the U.S. and other countries.
Mono ..................................................................... 1.0 µV (11.2 dBf) [HTR-6190]
Black color ................................................................. C, G models
Selectivity /
Titanium color .................................................................. G model
at 400 kHz ............................................................................... 70 dB




(7/8")
22.5
[DSP-AX1800]
Signal to Noise Ratio / (IHF) Gold color .......................................................................... J model
Mono ....................................................................................... 76 dB Accessories / "HDMI", the "HDMI" logo and "High-Definition Multimedia Interface" are trade-




150 (5-15/16")
Stereo ...................................................................................... 70 dB Remote control x 1, Zone remote control x 1 (U, C, R, T, K, A, B, L marks, or registered trademarks of HDMI Licensing LLC.




171 (6-3/4")
Harmonic Distortion / (1 kHz) models), Batteries (R03, AAA, UM-4) x 6 (RX-V1800: U, C, R, T, K, A,
Mono ........................................................................................ 0.2 % B, L models) / x 4 (RX-V1800: G, E models / HTR-6190: C, G models
Stereo ....................................................................................... 0.3 % / DSP-AX1800: J model), Indoor FM antenna x 1, AM loop antenna x
Stereo Separation / (1 kHz) 1, Power cable x 1 (U, C, R, T, K, A, B, G, E, J models) / x 2 (L model),
.............................................................................................. 42 dB Optimizer microphone x 1, Speaker terminal wrench x 1




(13/16")
"SILENT CINEMA" is a trademark of YAMAHA CORPORATION.
Frequency Response / (20 Hz to 15 kHz) 435 (17-1/8")




21
* Specifications are subject to change without notice due to product
....................................................................................... +0.5 / -2 dB
improvements.
Antenna Input /
........................................................................ 75 ohms unbalanced
Unit: mm (inch)
I AM Section / The XM name and related logos are registered trademarks of XM Satellite Radio
U .......... U.S.A. model B .......... British model Inc.
Tuning Range / C .......... Canadian model G .......... European model
U, C models .......................................................... 530 to 1,710 kHz R .......... General model E .......... South European model
R, L models ................................... 530 to 1,710 / 531 to 1,611 kHz T .......... Chinese model L ........... Singapore model
T, K, A, B, G, E, J models .................................... 531 to 1,611 kHz K .......... Korean model J ........... Japanese model
A .......... Australian model
Usable Sensitivity / ............................................ 300 µV/m
Neural Surround is a trademark owned by Neural Audio Corporation, THX is a
Antenna Input / .................................... Loop antenna
trademark of THX Ltd., which may be registered in some jurisdictions. All rights
I General / reserved.
This product is manufactured under license from Neural Audio Corporation and
Power Supply / THX Ltd. YAMAHA CORPORATION hereby grants the user a non-exclusive, non-
U, C models ........................................................... AC 120 V, 60 Hz transferable, limited right of use to this product under USA and foreign patent,
R, L models .......................... AC 110/120/220/230-240 V, 50/60 Hz patent pending and other technology or trademarks owned by Neural Audio Cor-
T model .................................................................. AC 220 V, 50 Hz poration and THX Ltd. "Neural Surround", "Neural Audio", "Neural" and "NRL" are
K model .................................................................. AC 220 V, 60 Hz trademarks and logos owned by Neural Audio Corporation, THX is a trademark of
A model .................................................................. AC 240 V, 50 Hz THX Ltd., which may be registered in some jurisdictions. All rights reserved.
B, G, E models ....................................................... AC 230 V, 50 Hz
J model ............................................................ AC 100 V, 50/60 Hz
Power Consumption /
U, C models ............................................................ 500 W / 630 VA
R, T, K, A, B, G, E, L models ................................................ 500 W
J model .................................................................................. 400 W
Standby Power Consumption (reference data) /
U, C, T, K, A, B, G, E, L, J models ............................. 0.1 W or less
R model (AC 240 V / 50 Hz) ..................................... 0.33 W or less
Maximum Power Consumption (6 ch drive, 10 % THD) [R model]
............................................................................................. 1100 W




11
RX-V1800/HTR-6190/DSP-AX1800




· SELECT MENU




(Refer to the attached table. /




(Refer to the attached table. /
Extd (Extended) Decode
Presence R Level
Surround R Level




Presence L Level
Surround L Level
Sur. Room Size




SB. Room Size




Sur.Back Level
Sur. Init. Delay
-6 dB to +3 dB




SB. Init. Delay
Sur. Liveness




Center Image
Decode Type




SB. Liveness




Center Width
Center Level
Dialogue Lift
0 to 250 ms
1.0 to 5.0 s

Rev. Delay
Room Size




0 to 100 %




0 to 100 %


0 to 100 %


0 to 100 %


0 to 100 %


0 to 100 %


0 to 100 %
Rev. Level




Low / High
DSP Level




Dimension
1 to 99 ms




1 to 49 ms




1 to 49 ms




Panorama
Rev. Time
Init. Delay



0.1 to 2.0




0.1 to 2.0




0.1 to 2.0




0.0 to 1.0
)




)
Liveness




TruBass
Auto/Off




Initialize
FOCUS
-3 to +3
0 to 10




0 to 10




0 to 10




On/Off
Direct
0 to 5




0 to 7




0 to 8


0 to 8
3D
CLASSICAL Hall in Munich
Hall in Vienna
Hall in Amsterdam
Church in Freiburg
Chamber
LIVE/CLUB Village Vanguard
Warehouse Loft
Cellar Club
The Roxy Theatre
The Bottom Line
ENTERTAINMENT Sports
Action Game
Roleplaying Game
Music Video
Recital/Opera
MOVIE Standard
Spectacle
Sci-Fi
Adventure
Drama
Mono Movie
STEREO 2 ch Stereo
7 ch Stereo
MUSIC ENHANCER Straight Enhancer
7 ch Enhancer
SUR. DECODE Surround Decoder
STRAIGHT




*1 Decode Type
Decode Type PL II x Movie PL II when Surround Back is None. /
Neo:6 Cinema

*2 Decode Type
Decode Type Pro Logic PL II when Surround Back is None. /
PL II x Movie PL II when Surround Back is None. /
PL II x Music PL II when Surround Back is None. /
PL II x Game
Neo:6 Cinema
Neo:6 Music
CS II Cinema (J model)
CS II Music (J model)
Neural-THX (U, C modes)

*3 Extd (Extended) Decode
Extd (Extended) Decode AUTO Does't displayed when Surround Back is x1/None. /
PL II x Movie Does't displayed when Surround Back is None. /
PL II x Music
EX/ES
EX
Neural-THX (U, C modes)
OFF

12
· SET MENU TABLE /
MANUAL SETUP
MAIN MENU SUB MENU PARAMETER VALUE [INTIAL VALUE]
1) BASIC MENU A) SPEAKER SET LFE/BASS OUT SWFR / FRONT / [BOTH]
FRONT SP SMALL / [LARGE]
CENTER SP NONE / [SML] / LRG
SUR. L/R SP NONE / [SML] / LRG
SB L/R SP NONE / SMLx1 / [SMLx2] / LRGx1 / LRGx2
PRESENCE SP NONE / [YES]
CROSSOVER 40 / 60 / [80] / 90 / 100 / 110 / 120 / 160 / 200 Hz
SUBWOOFER PHASE [NORMAL] / REVERSE
PRIORITY PRNS / [SB]
B) SPEAKER LEVEL FRONT L
-10.0 to +10.0 dB, 0.5 dB step, [0 dB]
FRONT R
CENTER
SUR. L
SUR. R
-10.0 to +10.0 dB, 0.5 dB step, [-1.0 dB]
SB L
SB R
SB
SWFR
PRNS L -10.0 to +10.0 dB, 0.5 dB step, [0 dB]
PRNS R
C) SP DISTANCE UNIT meters / feet
FRONT L
0.3 to 24.0 m, 0.1 m step, [3.0 m] / 1.0 to 80.0 ft, 0.5 ft step, [10.0 ft]
FRONT R
CENTER 0.3 to 24.0 m, 0.1 m step, [2.6 m] / 1.0 t