Yamaha RX-V795a- Manuals

Page 2 - TO SERVICE PERSONNEL; Components having special characteristics are marked; REMOTE CONTROL PANELS

1 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 ■ TO SERVICE PERSONNEL 1. Critical Components information. Components having special characteristics are marked Z and must be replaced with parts having specifications equal to thoseoriginally installed. 2. Leakage Current Measurement (For 120V Model o...

Page 3 - FRONT PANELS

RX-V795a/RDS/HTR-5170 2 RX-V795a / RDS HTR-5170 ■ FRONT PANELS ▼ RX-V795a ▼ RX-V795aRDS B, G models ▼ HTR-5170 NATURAL SOUND AV RECEIVER RX-V795a A/B/C/D/E SPEAKERS PHONES STANDBY/ON EXTENSION BYPASS 1 A BASS BASS TREBLE BALANCE TONE ON OFF ON OFF B 2 3 4 5 0 I I 2 2 3 3 4 4 5 5 0 I I 2 2 3 3 4 4 5 ...

Page 4 - REAR PANELS

3 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 ■ REAR PANELS ▼ RX-V795a/HTR-5170 U model ▼ RX-V795a/HTR-5170 C model ▼ RX-V795a/HTR-5170 R, T models ▼ RX-V795a/HTR-5170 A model FM ANT GND GND S VIDEO SIGNAL VIDEO SIGNAL SPEAKERS MAIN AC OUTLETS VOLTAGE SELECTOR IMPEDANCE SELECTOR SET BEFORE POWER O...

Page 6 - AUDIO SECTION; SPECIFICATIONS; FM SECTION

5 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 ■ AUDIO SECTION Minimum RMS Output Power per ChannelRX-V795a MAIN, 20Hz to 20kHz, 0.04% THD, 8 Ω .............. 85W+85W CENTER, 20Hz to 20kHz, 0.04% THD, 8 Ω ................. 85W REAR, 20Hz to 20kHz, 0.04% THD, 8 Ω ............. 85W+85W HTR-5170 MAIN,...

Page 7 - Video Signal Type; GENERAL; Power Supply

RX-V795a/RDS/HTR-5170 6 RX-V795a / RDS HTR-5170 ● DIMENSIONS ■ VIDEO SECTION Video Signal Type U, C models ................................................................ NTSCA, B, G, L models .......................................................... PALR, T models ...................................

Page 8 - INTERNAL VIEW; Removal of Top Cover; w e r

7 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 ■ INTERNAL VIEW ■ DISASSEMBLY PROCEDURES (Remove parts in disassembly order as numbered.) 1. Removal of Top Cover a. Remove 4 screws ( q ), and 4 screws ( w ) in Fig. 1. 2. Removal of Bottom Cover a. Remove 6 screws ( e ) in Fig. 1. 3. Removal of Front...

Page 9 - SELF DIAGNOSIS FUNCTION; PURPOSE AND OPERATION; SUB MENU

RX-V795a/RDS/HTR-5170 8 RX-V795a / RDS HTR-5170 ■ SELF DIAGNOSIS FUNCTION 1. PURPOSE AND OPERATION The RX-V795a/RDS/HTR-5170 has a Self Diagnosis Function to locate a faulty part, if any, by inspecting and takingmeasurements. There are 11 main items in the diagnostic menu and some of them have sub-m...

Page 10 - BEGINNING AND CANCELLATION; (1) STARTING UP THE FUNCTION AND THE DISPLAY; A. How to start test mode; There is a method of starting the self-diagnosis function.; B. Settings for start-up of diagnostic program; MONITOR SCREEN; MAIN BYPASS; DIAGNOSTIC

9 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 1. 2. 3. 4. 5. 6. 7. EFFECT LEVEL : MUTING : OFF INPUT (VIDEO) : DVD/LD (DVD/LD) CENTER SPEAKER : LARGE REAR SPEAKER : LARGE MAIN SPEAKER : LARGE LFE/BASS OUT : SWFR CHANNEL CENTER R SUR. L SUR. SWFR LEVEL (dB) 0 0 0 0 C. Start-up display The diagnosti...

Page 11 - FACTORY PRESET is engaged.

RX-V795a/RDS/HTR-5170 10 RX-V795a / RDS HTR-5170 ● History of protection function Each case of the history of the protection function is displayed as shown below. Main microprocessor check sum (4-digit, hexadecimal) and ver-sion (one letter) display* Used when checking on-board writing to main micro...

Page 12 - Selection by using the remote control unit; OPERATION AND DISPLAY WHEN STARTING DIAGNOSIS FUNCTION; Selection by using the front panel keys; (3) Other functions available while diagnosis function is active

11 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 ● Selection by using the remote control unit The remote control codes in the menu list (onpage 8) correspond to the DSP program, test andeffect keys. See the figure on the right. 3. OPERATION AND DISPLAY WHEN STARTING DIAGNOSIS FUNCTION (1) Selection ...

Page 13 - CONTENTS OF DIAGNOSIS FUNCTION; This shows that the device is not operating.

RX-V795a/RDS/HTR-5170 12 RX-V795a / RDS HTR-5170 4. CONTENTS OF DIAGNOSIS FUNCTION This section describes the contents of the self diagnosis function in detail. (1) ANALOG THROUGH The input is fixed to analog (A/D). There are two submenus. 1. MAIN BYPASS The MAIN L/R signals bypass the analog circui...

Page 16 - are mixed with the channel specified by LFE/BASS.; M I X; The analog switches in each submenu are set as follows:

15 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 (5) SPEAKERS SET The input is automatically discriminated by AC3>DTS>PCM>analog. The L/R signals are output to the channelsspecified by the submenu without being processed (through). There are the following 9 submenu items: The signal from th...

Page 17 - Preset group; PRESET

RX-V795a/RDS/HTR-5170 16 RX-V795a / RDS HTR-5170 (8) FACTORY PRESET The initialization of the backup RAM, which contains DSP sound field parameters, set menu contents, etc. is reserved orinhibited. The signal is processed with EFFECT OFF. Inhibits initialization of the RAM. Specify this option to pr...

Page 18 - C H E C K; AD Value; Caution

17 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 (9) AD DATA CHECK The A/D conversion values of the main CPU which detects key scan, protection, etc. are displayed in % (100%: 5V).All signal processing before this menu is executed will be held.The keys on the main unit cannot be operated to detect t...

Page 20 - EXIT

19 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 1 1 . M - S M : 8 2 4 E A 1 1 . S - S M : C B 9 6 C Main microprocessor check sum Software version Check sum DSP microprocessor check sum Software version Check sum Main microprocessor version DSP microprocessor version 1 1 . M - V E R : A 0 1 B One s...

Page 21 - FACTORY PRESET; EFFECT LEVEL

RX-V795a/RDS/HTR-5170 20 RX-V795a / RDS HTR-5170 ■ FACTORY PRESET All of the system settings are initially set from the factory as follows. ● INPUT (VIDEO) DVD/LD (DVD/LD) ● EFFECT LEVEL EFFECT CHANNEL PRESET VALUE CENTER 0dB RIGHT SURROUND 0dB LEFT SURROUND 0dB SUB WOOFER 0dB ● DSP PROGRAM INPUT DS...

Page 22 - AMP ADJUSTMENTS; Confirmation of Idling Current; Test Point

21 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 ■ AMP ADJUSTMENTS ● Confirmation of Idling Current 1) No signal applied.2) Non-loaded condition.3) Aging is not neccessary. Test Point CB529 CB530 CB531 R761 R813 Rating (DC) 0.05mV~1.5mV Note Item MAIN L MAIN R CENTER REAR L REAR R If the measured vo...

Page 23 - TUNER ADJUSTMENTS; Measuring Instruments; AM ANT

RX-V795a/RDS/HTR-5170 22 RX-V795a / RDS HTR-5170 ■ TUNER ADJUSTMENTS ● Measuring Instruments FM signal generator (FM SG)Stereo signal generator (SSG)AM signal generator (AM SG)Distortion meter (DIST. M)AC voltmeter (ACVM)DC voltmeter (DCVM)OscilloscopeLow pass filter (YLF-15, fc=15kHz)Oscillator ● D...

Page 24 - FM Adjustment; Before Adjustment; ) 100% modulation means that the frequency deviation is; Connection diagram (Measuring instruments); ) Discriminator balance adjustment

23 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 FM Adjustment ● Before Adjustment 1) For dB, 1 µ V=0dB µ Example : 60dB µ =1mV 2) 100% modulation means that the frequency deviation is ± 75kHz. 3) Install the Matching Transformer and connect FM SG.4) Set each switch to the following position unless ...

Page 25 - See page 22 for TP locations & adjustment points.

RX-V795a/RDS/HTR-5170 24 RX-V795a / RDS HTR-5170 Step 6 7 8 9 10 11 12 Adjustment item Adjustment of front end IFT Verification of monau- ral distortion Verification of stereo distortion Verification of sensi- tivity Adjustment of Separation Adjustment of Signal meter Verification of auto tuning Rec...

Page 26 - AM Adjustment; ) Adjustment of sensitivity

25 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 AM Adjustment (This should be done after FM adjustment.) ● Connection Diagram (Measuring instruments) 1) Adjustment of sensitivity Reception frequency 630kHz * (B-1) 630kHz * (B-1) 1080kHz * (B-2) 1440kHz * (B-3) 1080kHz * (B-2) Adjustment point T2 Si...

Page 27 - PIN CONNECTION; PATTERN AREA

RX-V795a/RDS/HTR-5170 26 RX-V795a / RDS HTR-5170 ■ DISPLAY DATA (V2573800) ● V101 : 16-BT-60GK ● ANODE CONNECTION ● GRID ASSIGMENT Pin No. 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 Connection P30 P29 P28 P27 P26 P25 P24 P23 P22 P21 P20 P19 P18 P17 P16 P15 P14 P13 P12 Pin No. 44 43 42 ...

Page 28 - IC DATA

27 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 ■ IC DATA IC3 : YM3436DKDIR ( Digital Format Interface Receiver ) Pin Pin I/O Function No. Name 1 DAUX I Auxiliary input for audio data 2 HDLT O Asynchronous buffer operation flag 3 DOUT O Audio data output 4 VFL O Parity flag output 5 OPT O Fs x 1 Sy...

Page 30 - Name

29 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 No. Name I/O Function 1 VDD1 +5V terminal (for terminal section) 2 RAMCEN O Chip enable terminal for external SRAM 3 RAMA16 O Address terminal 16 for external SRAM 4 RAMA15 O Address terminal 15 for external SRAM 5 SDIB0 Itp PCM input terminal 0 to Su...

Page 39 - ICs; PIN CONNECTION DIAGRAM; Diodes

RX-V795a/RDS/HTR-5170/DSP-R795a ● ICs ■ PIN CONNECTION DIAGRAM LA7956 µ PC4570HA YSS918F HD6433397A97F LC75710NELC75712E HD74HC02FPEL LC78211LC78212LC78213 1SS1331SS270AHZS5B2TDHZS6B2TDHZS6C2TDHZS7B2TDHZS9A2TDHZS12B2TDHZS12C2TDHZS242TDHZS302TDMTZJ5.6B ● Diodes 1SS355 D5SB20 2SA933S (Q, R)2SC1740S (R...

Page 40 - BLOCK DIAGRAM

RX-V795a/RDS/HTR-5170/DSP-R795a E-63/J-53 A B C D E ■ BLOCK DIAGRAM 1 2 3 4 5 6 7 RX-V795a/RDS/HTR-5170/DSP-R795a AM IF COIL CONTROL DECODER S.CURVE LEVEL DET FM DET COIL Q4 S.METER SD ANT COIL VCO STOP OSC COIL AGC PLL MIX OSC MUTE PROGRAMABLE DIVIDER UNIVERSAL COUNTER PHASE DETECTOR CHARGE PUMP DA...

Page 42 - * All voltage are measured with a 10M; Other ICs; REAR L; DSP

RX-V795a/RDS/HTR-5170/DSP-R795a A B C D E F G H I J K L 1 2 3 4 5 6 7 8 DSP * All voltage are measured with a 10M Ω /DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equal to thoseoriginally installed. * Schematic ...

Page 43 - INPUT; FRONT L; PHONO MM EQ AMP

RX-V795a/RDS/HTR-5170/DSP-R795a A B C D E F G H I J K 1 2 3 4 5 6 7 8 ■ SCHEMATIC DIAGRAM (INPUT) E-66/J-56 * All voltage are measured with a 10M Ω /DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equal to thoseor...

Page 44 - SUB POWER SUPPLY

RX-V795a/RDS/HTR-5170/DSP-R795a A B C D E F G H I J K L 1 2 3 4 5 6 7 8 INPUT & VIDEO ■ SCHEMATIC DIAGRAM (INPUT & VIDEO) * All voltage are measured with a 10M Ω /DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifica...

Page 45 - OPERATION; Other IC; FULL MUTE DRIVE

RX-V795a/RDS/HTR-5170/DSP-R795a A B C D E F G H I J K 1 2 3 4 5 6 7 8 ■ SCHEMATIC DIAGRAM (OPERATION) * All voltage are measured with a 10M Ω /DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equal to thoseoriginal...

Page 46 - SPEAKER SETTING CONTROL

RX-V795a/RDS/HTR-5170/DSP-R795a A B C D E F G H I J K L 1 2 3 4 5 6 7 8 * All voltage are measured with a 10M Ω /DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equal to thoseoriginally installed. * Schematic diag...

Page 47 - MAIN; MAIN L

RX-V795a/RDS/HTR-5170/DSP-R795a A B C D E F G H I J K 1 2 3 4 5 6 7 8 * All voltage are measured with a 10M Ω /DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equal to thoseoriginally installed. * Schematic diagra...

Page 49 - TUNER; REGULATOR

RX-V795a/HTR-5170/DSP-R795a A B C D E F G H I J K 1 2 3 4 5 6 7 8 ■ SCHEMATIC DIAGRAM (TUNER) E-72/J-62 Each voltage given here represents that in the FM (98. 1MHz, STEREO) reception mode but the one in the parentheses ( ) is that in the AM (1080kHz, MAN’L) reception mode. * All voltage are measured...

Page 51 - PA RTS LIST; ELECTRICAL PARTS

ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS : C.A.EL.CHP : CHIP ALUMI. ELECTROLYTIC CAP C.CE : CERAMIC CAP C.CE.ARRAY : CERAMIC CAP ARRAY C.CE.CHP : CHIP CERAMIC CAP C.CE.ML : MULTILAYER CERAMIC CAP C.CE.M.CHP : CHIP MULTILAYER CERAMIC CAP C.CE.SAFTY : RECOGNIZED CERAMIC CAP C.CE.TUBLR : CERAMIC TUBUL...

Page 52 - Description

P.C.B. DSP ❈ New Parts ❈ New Parts 75 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 SchmRef. PART NO. Description SchmRef. PART NO. Description V3005800 P.C.B. DSP CB1 VQ044200 CN.BS.PIN 6P CB3 VQ044500 CN.BS.PIN 11P CB6 VQ044600 CN.BS.PIN 13P C1 UB245100 C.CE.M.CHP 0.1uF 25V C2 UB052100 C.CE.M.CHP ...

Page 63 - Chip Resistor; IC

RX-V795a/RDS/HTR-5170 SchmRef. PART NO. Description SchmRef. PART NO. Description SchmRef. PART NO. Description ❈ New Parts ■ Chip Resistor C5 UB044100 C.CE.M.CHP 0.01uF 50V C6 UR837470 C.EL 47uF 16V C7 UM416100 C.EL 1uF 50V C8 UB044100 C.CE.M.CHP 0.01uF 50V C9 UB044100 C.CE.M.CHP 0.01uF 50V C10 UB0...

Page 64 - EXPLODED VIEW

RX-V795a/RDS/HTR-5170/RX-V795aRDS A B C D E F G H 1 2 3 4 5 6 88 89 ■ EXPLODED VIEW 2-24 200-1 2-24 1-4 1-1 2-12 2-22 2-18 2-22 2-11 3-2 (4) 2-1 (1) 2-1 (3) 3-2 (3) 3-2 (6) (B,G only) 2-1 (2) 2-1 (6) 3-18 3-15 3-19 3-16 2-21 3-12 2-21 3-2 (1) 2-1 (4) 2-1 (5) 3-2 (2) 3-2 (7) (1) (1) (3) (2) (4) 2-23 ...

Page 65 - MECHANICAL PARTS

RX-V795a/RDS/HTR-5170 90 RX-V795a / RDS HTR-5170 ■ MECHANICAL PARTS Ref.No. PART NO. Description Remarks Markets ❈ New Parts ❈ 1- 1 V3827200 FRONT PANEL RX-V795aBL ❈ 1- 1 V3827300 FRONT PANEL RX-V795aGD ❈ 1- 1 V3827400 FRONT PANEL RX-V795aRDS BL ❈ 1- 1 V3827500 FRONT PANEL RX-V795aRDS TI ❈ 1- 1 V382...

Page 68 - REMOTE CONTROL TRANSMITTER; SCHEMATIC DIAGRAM; List of the fixed code; Key arrangement

93 RX-V795a/RDS/HTR-5170 RX-V795a / RDS HTR-5170 REMOTE CONTROL TRANSMITTER ■ SCHEMATIC DIAGRAM – – – – : N o C o d e List of the fixed code KeyNo. Key MAME MODE ID # TV Cable/DBS VCR DVD Menu DVD/LD DSP CD Tape/MD AMP/Tuner 0037 2455 3072 – – – – 4545(DVD) – – – – 6 1 8 7 8 5 2 4 ( Ta p e ) – – – –...

Page 69 - Parts List for Carbon Resistors

RX-V795a/RDS/HTR-5170 94 RX-V795a / RDS HTR-5170 Value 1/4W Type Part No. 1/6W Type Part No. Value 1/4W Type Part No. 1/6W Type Part No. Parts List for Carbon Resistors 1.0 Ω HJ35 3100 HF85 3100 1.8 Ω HJ35 3180 ❊ 2.2 Ω HJ35 3220 HF85 3220 3.3 Ω HJ35 3330 HF85 3330 4.7 Ω HJ35 3470 HF85 3470 5.6 Ω HJ3...

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User Manual Yamaha RX-V795a

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Yamaha Manuals