Starting DIA Press the STANDB/ON key while simultaneously pressing those two keys of the main unit as indicated in the figure below. Keys of main unit

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1 AV REEIVER/AV AMPLIFIER RX-V/HTR- SERVIE MANUAL IMPORTANT NOTIE This manual has been provided for the use of authorized AMAHA Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically AMAHA Products, are already known and understood by the users, and have therefore not been restated. WARNIN: 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 AMAHA product owners that any service required should be performed by an authorized AMAHA 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 AMAHA are continually striving to improve AMAHA 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. WARNIN: 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. ONTENTS... PIN ONNETION DIARAM... All rights reserved. This manual is copyrighted by AMAHA and may not be copied or redistributed either in print or electronically without permission. P.O.Box, Hamamatsu, Japan '.

WARNIN: 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

2 Starting DIA Press the STANDB/ON key while simultaneously pressing those two keys of the main unit as indicated in the figure below. Keys of main unit / Turn on the power while pressing these keys. Starting DIA in the protection cancel mode If the protection function works and causes hindrance to trouble diagnosis, cancel the protection function as described below, and it will be possible to enter the DIA mode. (The protection functions other than the excess current detect function will be disabled.) Press the STANDB/ON key while simultaneously pressing those two keys indicated in the figure above. At this time, keep pressing those two keys for seconds or longer. In this mode, the SLEEP segment of the FL display of the main unit flashes to indicate that the mode is DIA mode with the protection functions disabled. AUTION! Using this product with the protection function disabled may cause damage to itself. Use special care for this point when using this mode. anceling DIA Before canceling DIA, execute setting for FATOR PRESET of DIA menu No. (Memory initialization inhibited or Memory initialized). * In order to keep the user memory stored, be sure to select PRESET INHIBITED (Memory initialization inhibited). Turn off the power by pressing the STANDB/ON key of the main unit.

enter the DIA mode. (The protection functions other than the excess current detect function will be disabled.

3 SNLVAPWR SNLVUAPWR SNLVAPWR TRAN TBP FF TVHUFT INVER WH- SDRAM A-EE SALDTF Diodes NS SS, SSA SS SS T MTZJA V MTZJA V MTZJB V MTZJ.B.V MTZJB V MTZJA V MTZJ..V RBQ- T- RBQ- T- athode Anode DSBA.A V DSB A V ~ ~ MA-L.V MA-M.V MA-M.V MA-L.V MA-M.V MA-H.V MA-M.V MA-M V athode RBV- RBV- UDZ.BTE-.V UDZ.B.V Anode MA-H.V Anode athode SNB A V SNB.A V ~ ~ Transistors SA SAS Q,R SA O, SS QRS S SA D,E S O, S R,BL S A,B SK T N,P SK T R,S SB SB Q,R,S SA O,P, S O,P, SDF S,T SD SK-TB-A SK SK SK SA S,T SA S,T S S,T S S,T SDF S,T E B B E B E E B SAK Q,R,S SK Q,R,S DTAES DTEKA DTES DTEKA DTES B E

4 A B D E F H I J VIDEO BLOK DIARAM BPASS AMP LA I DVD DTV/BL DVR V-AUX DVD DTV/BL INPUT SELETOR H VBS I I VBS OPERATION See page SHEMATI DIARAM VBS VBS db db db db /VR RX-V, DSP-AX, HTR- models DVR OUT DVR RX-V, DSP-AX, HTR- models VIA VIB VI I db db /MON RX-V, DSP-AX, HTR- models MONITOR OUT U,, R, T, K, A,, E, L models U,, R, T, K, A,, E, L models DVD Pb/b Pr/r b r FUNTION See page SHEMATI DIARAM b r Pb/b Pr/r L/L/L J model J model L/L/L U,, R, T, K, A,, E, L models Pb/b DTV/ BL Pr/r b r L/L/L J model U,, R, T, K, A,, E, L models Pb/b BPASS / b/ r IN OMP OMP /BPASS,,,,, Input Selector H I(b, ) I(r, L) I(L, L), b db db DVR Pr/r,,,,,, r db L/L/L b r J model L/L/L IN L/L/L OUT I AMP NJM /MON /NON

models DVD Pb/b Pr/r b r FUNTION See page SHEMATI DIARAM b r Pb/b Pr/r L/L/L J model J model L/L/L U,, R, T, K, A,, E, L models Pb/b DTV/ BL Pr/r b r L/L/L J model U,, R, T,

5 A B D E F H I J ONTROL/POWER BLOK DIARAM OPERATION See page SHEMATI DIARAM IR REMOTE U VOLUME INPUT SELETOR TONE ONTROL/ DSP PRORAM MAIN POWER Tack,,, -,,, FL DISPLA V FL DRIVER I D Q /RESET PRI / / / / / / / I,, T POWER DETET /HP Power Detector /Reset Q, D PRV s R Q PRV PRD Microprocessor M I XL MHz R PLDET TE F/J POWER RELA THM DEST. DETET F MODEL DETET / / // DSP / / / / - -/ / / / / - / - / / / / / / / - / -, -, - / / -.V I See page - SHEMATI DIARAM D D D SELETOR/VOLUME Q /ohms XMPWR POWER SAVE LIMITER ONTROL POWER RELA SPEAKER RELA MUTE ONTROL POWER SAVE DSP Net-module XM RDS TUNER VIDEO SELETOR BU M S POWER TRANSFORMER U, models MAIN D See page SHEMATI DIARAM D D R R D,,, V I -V I V I V I.V I /ohms D V I -V I -V Q XMPWR V I DSP See page - SHEMATI DIARAM V I.V I B -B BL -BL -VP FL FL - A E D V.V D D -V V VE.X X

DETET F MODEL DETET / / // DSP / / / / - -/ / / / / - / - / / / / / / / - / -, -, - / / -.

6 A B D E F H I J K L M N DSP / DSP I, : SNAHTDKR Single -input positive-or gate I : SNAHTPWR Quadruple -input positive-and gates A Vcc A Vcc B B B.. /..... /.. / DIR & A-... POINT A- Pin of I POINT A- Pin of I I : WH - K x banks x bits SDRAM K KE OK BUFFER A B A B A.... DIITAL IN... ANALO IN FL/FR / PL/PR SL/SR SBL/SBR S RAS AS WE A A A A A BA OMMAND DEODER ADDRESS BUFFER ONTROL SINAL ENERATOR MODE REISTER R O W D E O DE R OLUMN DEODER ELL ARRA BANK # SENSE AMPLIFIER REFRESH OUNTER DQ BUFFER DQ DQ DQ DQ DQ DQ DQ DQ DQ DQ DQ DQ.. REFRESH OUNTER OLUMN OUNTER R O W D E O DE OLUMN DEODER ELL ARRA BANK # DQ DQ DQ DQ R SENSE AMPLIFIER LDQM UDQM..... BUFFER. SELETOR I : SALDTF M-bit OMS. volt-only boot sector flash memory.... V V SS RESET# R/ B# Sector Switches Erase Volt age enerator DQ DQ (A- ) In put/ Output Buff ers WE# BTE# State ontr ol omm and Register PM Vo ltage enerator XM A- XMDT No replacement part available M SDRAM M ROM SALDTF E# OE# A A A A A A A A A A N N WE# RESET# N N R/B# N A A A A A A A A I : SNLVAPWR Octal bus transceiver with -state outputs DIR A A A A A A V De te ctor Tim er STB Vcc OE B B B B B hip Enable Output Enable Logic Addr ess La tch -Decoder X- Decoder STB Data Latch - ating ell M atrix A BTE# V SS DQ/A- DQ DQ DQ DQ DQ DQ DQ V DQ DQ DQ DQ DQ DQ DQ DQ OE# V SS E# A A B A B B All voltages are measured with a MΩ/V D electronic volt meter. omponents having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. Schematic diagram is subject to change without notice. I : SNLVUAPWR Hex inverters A A V A A A A I : RSD-E-F Power supply VDD E Vref urrent Limit VOUT I : NJMDL- Low dropout voltage regulator VIN Bandgap Reference Thermal VOUT I : LW-VFA-E Digital audio interface transceiver RXOUT RX RX RX RX RX RX/VI RX/UI LPF TMK/PIO TBK/PIO TLRK/PIO TDATA/PIO TXO/PIOEN Input Selector Modulation & Parallel Port EMPHA/UO AUDIO/VO bit, Ubit Demodulation & Lock detect PLL lock Selector XIN XOUT XMK KST INT E I Microcontroller I/F Data Selector /N XMODE DO RERR RDATA SDIN RMK RBK RLRK SBK SLRK I : SNLVAPWR Quadruple -line to -line data selectors/multiplexers A B A B A B A B A/B A/B A B A B V A B A B I : SNAHDKR -input positive-and gate A B Vcc

...................... S RAS AS WE A A A A A BA OMMAND DEODER ADDRESS BUFFER ONTROL SINAL ENERATOR MODE REISTER R O W D E O DE R OLUMN DEODER ELL ARRA BANK # SENSE AMPLIFIER REFRESH OUNTER DQ BUFFER

7 A B D E F H I J K L M N DSP / Page D to FUNTION ()_B Page J to MAIN ()_W DSP I-,, : NJMM Dual operational amplifier V.. INPUT INPUT,,,.. V LW-VFA-E LW-VFAD-E ch DA ANALO IN FRONT L V IN L V REF V REF V IN R I : PMDBR Stereo A/D converter Reference Delta-Sigma Modulator Delta-Sigma Modulator x/, x/ Decimation Filter With High-Pass Filter Serial Interface Mode/ Format ontrol BK LRK DOUT FMT FMT MODE MODE DIITAL IN... FRONT L / SL/SR SBL/SBR ch DA ENTER SUB WOOFER SURROUND L BK LRK DATA (FMT) MS (DEMP) M (DEMP) MD (MUTE) I : PMDBQR Audio digital-to-analog converter Audio Serial Port Serial ontrol Port V Power Supply A D / Oversampling Digital Filter With Function ontrol V DD Enhanced Multilevel Delta-Sigma Modulator lock and Timing ontrol DA DA Output Amp and Low-Pass Filter Output Amp and Low-Pass Filter BPAS TEST OSR PDWN SKI V OUT L V OM V OUT R FL/FR SELETOR -.. SURROUND BAK L (TEST) SK System lock Manager System lock ZEROL/NA () Zero Detect () Open-drainoutputforthePM NOTE: Signal names in parentheses ( ) areforthe PM. ZEROR/ZEROA () (ZEROA) V Power Supply A -. I : PMDBQR Audio digital-to-analog converter I : NJMMDLA Voltage regulator INPUT I : SNLVAPWR Quadruple -line to -line data selectors/multiplexers A B A B A B A B A/B A B A B V A B A B BK LRK DATA (, ) DATA (, ) DATA (, ) DATA (, ) MS/ADR M/S MD/SDA MSEL Serial Input I/F Function ontrol I/F System lock Oversampling Digital Filter With Function ontroller Enhanced Multilevel DeltaœSigma Modulator DA DA DA DA DA DA DA DA V OUT V OUT V OUT V OM V OUT V OUT V OUT V OUT V OUT OMMON A/B SK Syst em lock Manager Zero Detect Power Supply ZERO ZERO VDD D V A V A All voltages are measured with a MΩ/V D electronic volt meter. omponents having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. Schematic diagram is subject to change without notice.

Format ontrol BK LRK DOUT FMT FMT MODE MODE DIITAL IN... FRONT L / SL/SR...... SBL/SBR.................... ch DA. -.

8 A B D E F H I J L K M N FUNTION Page B Page Page to DSP_B to DSP_B to OPERATION ()_W.... EXTENSION SELETOR Page B OUTFR TH MUTE DA VEE to OPERATION ()_B A I : BDK -channel volume I for -channel to DSP_B V J A Page ROUTA ROUTA A ROUTB. ROUTB ROUT ROUT SURROUND L. TNF BNFA. IND..... BNFB. OUTFR Master Volume INF OUTFL. INF A FRL select A. BNFB BNFA INE. BASS Output mode select INE FUNTION ()... IND ENTER.. OUT INDVDFR OUTSR INDVDFL OUTSL INDVD OUTB INDVDSR A INDVDSL OUT INDVDB A D DA VEE BIAS V REA REA REB REB RE RE OUT OUT INI INI. INH INH IN * IN INF INPUT SELETOR INF INE. IND LOI.. IN IN.... INB.. INB. Page. INA. E F-. to OPERATION ()_W..... F-. I : BDFS Function switch INPUT SELETOR INA -. VINSL OUTSL VINB OUTB -.. A. INE VIN.. -. OUTSR.. OUT -. A IND... INDSP.. VINSR OUT. -. INDSPB. OUT INDSPSL.. OUT.ch select INDSPSR.... VIN A INDSP.. INDVD A AMP to TUNER.. FRONT L.. INDSPFL. INDSPFR TNF TREBLE IN Input select IN.. - A BDK. INB VINFL IN. ANALO IN INB... RE A RE B OUTFL INA.. VINFR INA SURROUND BAK L/R SUB WOOFER. RE. LOI A F-: INPUT FUNTION F-: INPUT FUNTION Page B I : LPM RDS signal processor FUNTION () R, L models MPX IN PLL ( khz) VSSA.. REFERENE VOLTAE. VDDA -.. INPUT SELETOR IN Page. -. FL OUT VREF B to MAIN ()_W. to MAIN ()_W DO DI E T T T T OK REOVER (. Hz) VSSD VREF khz bpf (SF) ANTIALIASIN FILTER MEMOR ONTROL TEST DATA DEODER SMOOTHIN FILTER RAM ( BLOK DATA) B ERROR ORRETION (SOFT DEISION) SN / E ONTROLLER K (. MHz) OS/DIVIDER SN DETET- SN DETET- D Page X OUT FUNTION () FUNTION () T T T X IN to POWER TRANSFORMER to OPERATION ()_B Page to OPERATION ()_W All voltages are measured with a MΩ/V D electronic volt meter. omponents having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. Schematic diagram is subject to change without notice. I-, : THAF Analog multiplexers/demultiplexers L I : NJMAL Dual operational amplifier V A B VEE X, INPUT INPUT,, V X INH V LEVEL ONVERTER I : NJMM Video amplifier BINAR TO -OF- DEODER WITH INHIBIT VIN X X X-OM -OM INHIBIT B X A X x, y x, y x, y x, y NONE db AMP NEE VIN VEE VIN VEE PowerSave I : TVHUFT Hex inverters Driver BIAS db AMP Driver BIAS db AMP BIAS Driver V VOUT V A V A A A I, : NJMM Dual operational amplifier V, VOUT A V A VOUT INPUT INPUT,, V REF VDDD RDS-ID SN SR

.... BNFB. OUTFR Master Volume INF OUTFL. INF A FRL select A. BNFB BNFA INE. BASS Output mode select INE FUNTION ()... IND ENTER.

9 A B D E F H I J K L M N OPERATION to POWER ABLE U,, T, K, A,, J models to POWER TRANSFORMER Page J R, L models to FUNTION ()_WA,WB I : LA-TLM-E Analog amplifier N.. N.. VIN Vcc N.. N.. V Page J Page H Page DNT db DR VOUT to MAIN ()_W to FUNTION ()_B to FUNTION ()_B VIN VOUT db DR RX-V/DSP-AX models MUTE N.. RX-V/DSP-AX models VIN db DR VOUT K N.. N.. -V -V N.. N.. VIN Vcc V Page B to DSP_B s D VU MA-M.V VU MA-M.V VU MA-H.V VU MA-M.V VU MA-M.V VU MA-M.V VU MA-M.V VU MA-M.V DNT VIN MUTE db db DR DR VOUT VOUT N.. VIN VOUT db DR -V -V OPERATION () I~ : THAF Analog multiplexers/demultiplexers Page H to MAIN ()_W OPERATION () THAF OM V to TRANSFORMER THAF no_use (HTR- model) INH V EE I : M-FP FL display driver A B FL DRIVER P P Page E to FUNTION ()_B no_use (HTR- model) THAF S Serial data SK receive SDATA circuit XIN XOUT lock generator timing clock Display code RAM (-bit x ) ode write ode/ command control circuit Display controller dot data write code select scan pulse ROM ( bit x ) ROM ( bit x ) Segment output circuit Segment digit select/ output circuit SE SE SE SE SE DI/ SE DI/ SE DI/ SE DI/ SE DI/ SE DI/ SE DI/ SE OPERATION () RESET Vcc Vcc Vss Vp Digit output circuit DI DI OPERATION () RX-V/HTR-/ DSP-AX models HTR- model RX-V/HTR-/DSP-AX models OPERATION () I : TBP Dual D-type flip flop RESET K SET Q HTR- models DATA Q OPERATION () Page B to DSP_B Page E to FUNTION ()_B OK RESET SET Q DATA Q OK VSS VDD All voltages are measured with a MΩ/V D electronic volt meter. omponents having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. Schematic diagram is subject to change without notice.

. VIN VOUT db DR -V -V OPERATION () I~ : THAF Analog multiplexers/demultiplexers Page H to MAIN ()_W OPERATION () THAF OM V to TRANSFORMER THAF no_use (HTR- model) INH V EE I : M-FP FL display driver

10 A B D E F H I J K L M N MAIN MAIN () FRONT L..... Page B to DSP_B SUBWOOFER Page E to FUNTION ()_B Page E to FUNTION ()_B././ HTR- models: MAIN () no use(rx-v/dsp-ax models) Page B to DSP_B I,, : NJMF Low dropout voltage regulator with ON/OFF control Vin ont ON/OFF control Bandgrap Reference - Vout Over Voltage Thermal Over urrent SURROUND BAK L/R RX-V/DSP-AX models./ RX-V/DSP-AX models I: LMIZ Temperature sensor RX-V/DSP-AX models ENTER / SURROUND L/R I : NJMMFA Voltage regulator OMMON../ -. MAIN () -../ RX-V/DSP-AX models RX-V/DSP-AX models.. A. A. A. A. A. to TRANSFORMER Page to OPERATION ()_B RX-V/DSP-AX models.. Page D to DSP_B I : NJMFA Voltage regulator INPUT INPUT OMMON HTR- model to TRANSFORMER. RX-V/DSP-AX models Page H to MAIN ()_WA Page I to OPERATION ()_B I : NJMMFA Voltage regulator OMMON INPUT. Page B ST_B Page J to MAIN ()_WB MAIN () I : NJMF Low dropout voltage regulator with ON/OFF control Vin Vout Bandgrap Reference - ont ON/OFF control Over Voltage Thermal Over urrent All voltages are measured with a MΩ/V D electronic volt meter. omponents having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. Schematic diagram is subject to change without notice.

Vout -. -. Over Voltage Thermal Over urrent SURROUND BAK L/R -. -. -. -. -. -. -. -.. RX-V/DSP-AX models./. -..... -.. -. -. -. -. -... -... -. -... -. -.. RX-V/DSP-AX models........................ I: LMIZ Temperature sensor RX-V/DSP-AX models ENTER -.

11 A B D E F H I J K L M N ST HTR- SUBWOOFER Page to MAIN ()_B ST I : NJMLD Dual operational-amplifier V, INPUT INPUT,, V All voltages are measured with a MΩ/V D electronic volt meter. omponents having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. Schematic diagram is subject to change without notice.

12 RX-V/HTR-

PRECISION DIGITAL PROCESSOR DC-101

PRECISION DIGITAL PROCESSOR DC-101 PRECISION DIGITAL PROCESSOR Accuphase warranty is valid only in Japan. 2 3 1 4 5 IN 6 10 11 7 8 9 12 3 INPUT LEVEL(dB) 2 4 5 PRECISION DIGITAL PROCESSOR STEREO MHZ SELECTIVITY METER NORMAL SIGNAL MEMORY