Yamaha DSP-A595a - Manuals - manualsarea.com

Page 2 - TO SERVICE PERSONNEL; Meter impedance should be equivalent to 1500 ohm shunted by 0.15; REMOTE CONTROL PANELS; R and T models

1 DSP-A595a ■ TO SERVICE PERSONNEL 1. Critical Components information. Components having special characteristics are marked and must bereplaced with parts having specifications equal to those originallyinstalled. 2. Leakage Current Measurement (For 120V Model only). When service has been completed, ...

Page 3 - REAR PANELS

2 DSP-A595a ▼ T model ▼ B model ▼ G model ▼ R model ■ REAR PANELS

Page 4 - SPECIFICATIONS

3 DSP-A595a ■ SPECIFICATIONS ■ AUDIO SECTION Minimum RMS Output Power Per Channel (Power Amp. Section) MAIN L/R, REAR L/R 20Hz to 20kHz, 0.04% THD, 8 Ω 65W+65W 1kHz, 0.07% THD, 8 Ω 80W+80W CENTER 20Hz to 20kHz, 0.04% THD, 8 Ω 65W 1kHz, 0.07% THD, 8 Ω 80W Maximum Power (EIAJ) R, T models only MAIN L/...

Page 5 - DIMENSIONS; WARNING; Do not change the IMPEDANCE SELECTOR switch; IMPEDANCE SELECTOR

4 DSP-A595a ● DIMENSIONS Units: mm (inch) 21.5 (7/8") 435(17-1/8") 349.5(13-3/4") 391(15-3/8") 130(5-3/32") 151(5-15/16") 20 (13/16") 21 (27/32") WARNING Do not change the IMPEDANCE SELECTOR switch setting while the power to this unit is on, otherwise this unit may be...

Page 6 - DISASSEMBLY PROCEDURES; Removal of Top Cover; POWER TRANSFORMER; INTERNAL VIEW; Front Panel; J K

5 DSP-A595a ■ DISASSEMBLY PROCEDURES (Remove parts in disassembly order as numbered.) 1. Removal of Top Cover Remove 4 screws ( 1 ) and 4 screws ( 2 ) in Fig. 1. 2. Removal of Front Panel a. Remove 5 knobs. b. Remove 6 screws ( 3 ) in Fig. 1. Fig.1 1 POWER TRANSFORMER 2 P.C.B. MAIN (3) 3 P.C.B. OPER...

Page 7 - SELF DIAGNOSIS FUNCTION; PURPOSE AND OPERATION

6 DSP-A595a ■ SELF DIAGNOSIS FUNCTION 1. PURPOSE AND OPERATION The DSP-A595a 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-menu items as listed below. No. 1 2 3 4 5 6 7 8 9...

Page 8 - BEGINNING AND CANCELLATION; (1) STARTING UP THE FUNCTION AND THE DISPLAY; A. How to start diagnostic program; Using the front panel keys of the main unit.; B. Settings for start-up of diagnostic program; FRONT PANEL

7 DSP-A595a STANDBY/ON + – SET MENU TIME/ LEVEL INPUT MODE 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 ...

Page 9 - History of protection function; Appears when the protection function has not been activated.; FL display at start-up of diagnostic program; the Power will be switched OFF automatically.; NO PROTECT

8 DSP-A595a ● History of protection function Each case of the history of the protection function is displayed as shown below. Appears when the protection function has not been activated. Appears when the current protection function has been activated.When power is turned on in an abnormal status, th...

Page 10 - Selection by using the remote control unit; OPERATION AND DISPLAY WHEN STARTING DIAGNOSIS FUNCTION; (2) Other functions available while diagnosis function is active; • All “SPEAKERS”; Selection by using the front panel keys; DS

9 DSP-A595a ● Selection by using the remote control unit The remote control codes in the menu list (see right columnon page 6) correspond to the DSP program test and effect keys. See the figure on the right. 3. OPERATION AND DISPLAY WHEN STARTING DIAGNOSIS FUNCTION (1) Selection of diagnostic menu T...

Page 11 - CONTENTS OF DIAGNOSIS FUNCTION; The MAIN L/R signals bypass the analog circuits to be output.; DSP 0DB

10 DSP-A595a 4. CONTENTS OF DIAGNOSIS FUNCTION This section describes the contents of the self diagnosis function in detail. No.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 circuits to be output. For CENTER/LFE, FR...

Page 12 - : This shows that the device is not operating.; DSP FULL

11 DSP-A595a No.2 DSP THROUGH The input is automatically discriminated by signal detection and switched with priorities AC-3 (DOLBY DIGITAL)>DTS Digital Surround>Audio>analog. There are the following three submenus. 1. YSS918-SRAM MAIN L/R are input to the DSP via AC3D2av, pass through SRAM...

Page 13 - EFFECT OFF; b i t 0

12 DSP-A595a No.3 AC-3/DTS THROUGH The input is digital signal only. AC-3 (DOLBY DIGITAL) or DTS Digital Surround decoding operation is executed, according to the input source. 1. STATUS(BINARY FORM) AC-3 (DOLBY DIGITAL) decoded signals are output to each channel via AC3D2av. AC-3 Status Info. : bit...

Page 14 - F R O N T M I X

13 DSP-A595a No.5 SPEAKERS SET The input is automatically discriminated by AC-3(DOLBY DIGITAL)>DTS Digital Surround>PCM Audio>analog. There are the following 9 submenu items: The signal from the DSP block is normally in the effect off status for menuitems 1-4. For other menu items, the same...

Page 16 - A D D A T A C H K

15 DSP-A595a No.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 the values of all keys in the K1/K2/...

Page 17 - No.10 STATUS FROM DSP MICOM; [STATUS 1] IEC958 channel status bits 00-31 available from DIR2; Indicate

16 DSP-A595a No.10 STATUS FROM DSP MICOM The status data from the DSP microprocessor is sequentially displayed in a hexadecimal number.All signal processing before this menu is executed will be held. [STATUS 0] <1st Byte> acmod: If it is 1000B or more with DTS 7.1 signal, the DSP block will be...

Page 18 - EXIT

17 DSP-A595a 1 1 D V D / L D S - V E R : Z 0 8 B Main microprocessor check sum DSP microprocessor check sum Main microprocessor version DSP microprocessor version One suffix letter is for compatibility of communications between the main and DSP microprocessors. * Use microprocessors with the same su...

Page 19 - FACTORY PRESET; EFFECT LEVEL

18 DSP-A595a ■ 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 0 dB RIGHT SURROUND 0 dB LEFT SURROUND 0 dB SUBWOOFER 0 dB ● DSP PROGRAM INPUT DSP PROGRAM DELAY PRESET VALUE V-AU...

Page 20 - Confirmation of Idling Current of Main Amplifier; AMP ADJUSTMENT; Cut off

19 DSP-A595a Confirmation of Idling Current of Main Amplifier • Right after power is turned on, confirm that the voltage across the terminals of R688(Main Lch),R690(Main Rch), R692(Center), R694(Rear Lch), R696(Rear Rch) are between 0.1mVand 5.0mV. • If it exceeds 5.0mV, open (cut off) R571 (Main Lc...

Page 21 - bit Main; IC DATA; TOP VIEW

20 DSP-A595a IC800 : LC876564A-5M19 8 bit Main µ -COM ■ IC DATA S47/PF7 S46/PF6 S45/PF5 S44/PF4 S43/PF3 S42/PF2 S41/PF1 S40/PF0 VDD4 S39/PE7 S38/PE6 S37/PE5 S36/PE4 S35/PE3 S34/PE2 S33/PE1 S32/PE0 S31/PD7 S30/PD6 S29/PD5 S19/PC3S18/PC2S17/PC1S16/PC0VDD3S15/T15S14/T14S13/T13S12/T12S11/T11S10/T10S9/T9...

Page 24 - bit Sub

23 DSP-A595a IC14 : LC875164A-5K20 8 bit Sub µ -COM PB7 P07 P27/INT5 P26/INT5 P25/INT5 P24/INT5 P23/INT4 P22/INT4 P21/INT4 P20/INT4 P06 P05 P04 P03 P02 P01 P00 VSS2 VDD2 PWM0 PWM1SI2P3SCK2SI2SO2P17/PWMP16/PWLP15/SCK1P14/SI1P13/SO1P12/SCK0P11/SI0P10/SOOP34P33P32P31P30P87/AN7P86/AN6 PB6 PB5PB4PB3PB2PB...

Page 26 - Digital Format Interface Receiver

25 DSP-A595a IC3 : YM3436DK (DIR2) 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 (NC) 3 DOUT O Audio data output 4 VFL O Parity flag output (NC) 5 OPT O Fs x 1 Synchronous output signal for DAC (NC)...

Page 31 - DISPLAY DATA; • GRID ASSIGNMENT; PATTERN AREA; CONNECTION

DSP-A595a 30 ■ DISPLAY DATA ● V800 : 16-BT-59GK (V2421800) • GRID ASSIGNMENT • PIN CONNECTION • ANODE CONNECTION y 1 PATTERN AREA 18 P16 17 P17 16 P18 15 P19 14 P20 13 P21 12 P22 11 NC 10 NC 9 NC 8 NC 7 NC 6 NC 5 NC 4 NP 3 NP 2 F1 1 F1 Pin No. CONNECTION 19 P15 20 P14 21 P13 22 P12 23 P11 24 P10 25 ...

Page 32 - BLOCK DIAGRAM

DSP-A595a 32 33 ■ BLOCK DIAGRAM 10 11 21 20 6CH SELECTOR IC102 26 25 27 6 5 4 8 9 7 22 23 24 OPERATION KEY SW802~806,810~815,817,822~824 12 4 22 93 18 21 27 50 29 47 23 11 26 90 17 46 76 51 RESET Q803,D805 POWER DOWN DETECT Q805,D811,812 BACK-UP (MEMORY) Q806,D813 REGULATOR 1 2 65 65 ~ 33 12 ~ 55 40...

Page 33 - Semiconductor Location; Point; Point

DSP-A595a E-34/J-32 E-35/J-33 B A C D E F H G 1 2 3 4 5 6 ■ PRINTED CIRCUIT BOARD (Foil side) P. C. B. DSP P. C. B. DSP Ref. No. Location D1 F3 D2 F3 D3 G4 D4 G4 D5 G4 D6 G4 D7 G4 D8 G4 D9 F4 D10 G4 D11 G4 D12 G4 D13 D4 D14 D4 D15 D4 D16 D4 D17 D4 ● Semiconductor Location Ref. No. Location IC1 B3 IC...

Page 35 - WER; WER

DSP-A595a E-38/J-36 B A C D E F H G 1 2 3 4 5 6 ■ PRINTED CIRCUIT BOARD (Foil side) E-39/J-37 • J, R and T models P. C. B. OPERATION (3) • B and G models P. C. B. OPERATION (3) • R and T models only P. C. B. OPERATION (7) P. C. B. OPERATION (5) P. C. B. OPERATION (6) Ref. No. Location D814 C3 D815 A...

Page 37 - • Except J model

DSP-A595a E-42/J-40 E-43/J-41 B A C D E F G 1 2 3 4 5 6 ■ PRINTED CIRCUIT BOARD (Foil side) P. C. B. MAIN (6) P. C. B. MAIN (3) P. C. B. MAIN (4) P. C. B. MAIN (7) H ● Semiconductor Location Ref. No. D501D502D503D721D722D751D762D763 IC722IC723 IC724 Location E4 D3 E3 G3G3 A4 C3C2 G3G4G3 Ref. No. Q50...

Page 40 - Video Switch; VIDEO SELECTOR

DSP-A595a H 47 B A C D E F G 1 2 3 4 5 6 ■ SCHEMATIC DIAGRAM (VIDEO) 48 E-48/J-46 E-49/J-47 ★ All voltages are measured with a 10M Ω /V DC electric volt meter. ★ Components having special characteristics are marked andmust be replaced with parts having specifications equal to thoseoriginally install...

Page 41 - PIN CONNECTION DIAGRAM OF DIODES, TRANSISTORS AND IC’s.

A 1 2 3 4 5 6 7 8 9 10 DSP-A595a B C D E F G H I J K L M N ★ All voltages are measured with a 10M Ω /V DC electric volt meter. ★ Components having special characteristics are marked andmust be replaced with parts having specifications equal to thoseoriginally installed. ★ Schematic diagram is subjec...

Page 42 - REAR L

A 1 2 3 4 5 6 7 8 9 10 DSP-A595a B C D E F G H I J K L M N ★ All voltages are measured with a 10M Ω /V DC electric volt meter. ★ Components having special characteristics are marked andmust be replaced with parts having specifications equal to thoseoriginally installed. ★ Schematic diagram is subjec...

Page 43 - MAIN L; CONTROL

A 1 2 3 4 5 6 7 8 9 10 DSP-A595a B C D E F G H I J K L M N ★ All voltages are measured with a 10M Ω /V DC electric volt meter. ★ Components having special characteristics are marked andmust be replaced with parts having specifications equal to thoseoriginally installed. ★ Schematic diagram is subjec...

Page 44 - Dual OP AMP; FRONT L

A 1 2 3 4 5 6 7 8 9 10 DSP-A595a B C D E F G H I J K L M N ★ All voltages are measured with a 10M Ω /V DC electric volt meter. ★ Components having special characteristics are marked andmust be replaced with parts having specifications equal to thoseoriginally installed. ★ Schematic diagram is subjec...

Page 45 - PARTS LIST; ELECTRICAL PARTS; ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS:

54 DSP-A595a PARTS 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 ARRAYC. CE. CHP : CHIP CERAMIC CAP C. CE. ML : MULTILAYER CERAMIC CAP C. CE. M. CHP : CHIP MULTILAYER CERAMIC CAPC. CE. SA...

Page 55 - Chip Resistors

64 DSP-A595a ✻ New Parts SchmRef PART NO. Description ■ Chip Resistors RD250000 R.CAR.CHP 0 Ω 1/10W RD254470 R.CAR.CHP 47 Ω 1/10W RD255100 R.CAR.CHP 100 Ω 1/10W RD255330 R.CAR.CHP 330 Ω 1/10W RD256100 R.CAR.CHP 1K Ω 1/10W RD256120 R.CAR.CHP 1.2K Ω 1/10W RD256150 R.CAR.CHP 1.5K Ω 1/10W RD256220 R.CAR...

Page 56 - EXPLODED VIEW; B model

65 DSP-A595a B A C D 1 2 3 4 5 6 ■ EXPLODED VIEW B model G model JK Ass'y VR Ass'y SW Ass'y VR Ass'y (5) (4) (4) (2) (6) (4) (7) (7) (8) (2) (1) (3) (3) (6) (3) (1) (5) (1) (R,T only) (B,G only) (R,T only) (G only) (G only) 1-4 162 3-2 2-1 124 1-1 2-1 2-23 2-24 2-23 2-8 25 30 8 17 16 176 160 160 160...

Page 57 - MECHANICAL PARTS

DSP-A595a Ref.No. PART NO. Description Remarks Markets ✻ New Parts Ref.No. PART NO. Description Remarks Markets ✻ New Parts 66 67 ■ MECHANICAL PARTS 1- 1 V3827000 FRONT PANEL BL 1- 1 V3827100 FRONT PANEL TI 1- 4 V2468600 ESCUTCHOEN 2- 1 V4036800 P.C.B. ASS’Y OPERATION (RT) 2- 1 V4036900 P.C.B. ASS’Y...

Page 58 - REMOTE CONTROL TRANSMITTER; SCHEMATIC DIAGRAM; List of the fixed code; • R and T models; Parts List for; Value

DSP-A595a ■ REMOTE CONTROL TRANSMITTER SCHEMATIC DIAGRAM 67 – – – – : N o C o d e I D # : R A V 1 7 4 / R A V 1 7 5 List of the fixed code KeyNo. Key Name MODE ID # TV Cable/DSS VCR DVD Menu DVD/LD DSP CD Tape/MD AMP/Tuner 0047/0037 2566/2455(DSS) 3060/3072 – – – – 4545(DVD) – – – – 6 1 8 7 8 5 2 4 ...