Yamaha DSP-AX2 Service Manual

Yamaha DSP-AX2 Service Manual

Yamaha av amplifier service manual
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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:
IMPORTANT:
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:
IMPORTANT:
CONTENTS
To Service Personnel ........................................... 1
Front Panel ............................................................... 1
REAR PANELS ............................................................... 2
Specifications ..................................................... 4 – 5
Internal View ............................................................ 6
Disassembly Procedures .................................... 6
Self Diagnosis Function ............................... 7 – 25
Amp Check ................................................................. 26
1 0 0 7 2 9
DSP-AX2

IMPORTANT NOTICE

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.
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.
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).
Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the
unit.
AV AMPLIFIER
SERVICE MANUAL
Ic Data ................................................................ 27 – 40
Display Data .................................................... 41 – 42
Pin Connection Diagram ..................................... 43
Block Diagram ................................................ 44 – 47
Printed Circuit Board ................................. 48 – 71
Schematic Diagram ....................................... 72 – 78
Parts List ........................................................ 79 – 102
REMOTE CONTROL TRANSMITTER .............. 103 – 108
DSP-AX2

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Table of Contents
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Summary of Contents for Yamaha DSP-AX2

  • Page 1: 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.
  • Page 2: To Service Personnel

    DSP-AX2 TO SERVICE PERSONNEL Critical Components Information Components having special characteristics are marked Z AC LEAKAGE EQUIPMENT and must be replaced with parts having specifications equal WALL TESTER OR OUTLET UNDER TEST EQUIVALENT to those originally installed. INSULATING TABLE WARNING...
  • Page 3: Rear Panels

    DSP-AX2 REAR PANELS R, T models B model G model...
  • Page 4: Specifications

    DSP-AX2 SPECIFICATIONS AUDIO SECTION Minimum RMS Output Power per Channel Total Harmonic Distortion (20Hz to 20kHz) MAIN, 20Hz to 20kHz, 0.02% THD, 8Ω . . . 100W+100W PHONO MM to REC OUT (3V) ....0.01% CD, etc, to PRE OUT MAIN L/R (1V) .
  • Page 5: Specifications

    DSP-AX2 GENERAL DIMENSIONS Power Supply B, G models ..... . . AC 230V, 50Hz R, T models ... AC 110/120/220/240V, 50/60Hz Power Consumption .
  • Page 6 DSP-AX2 SET MENU TABLE SET MENU PRESET VALUE SETTING RANGES SPEAKER SET CENTER SPEAKER LARGE LARGE/SMALL/NONE MAIN SPEAKER LARGE LARGE/SMALL REAR L/R SPEAKER LARGE LARGE/SMALL/NONE REAR CT SPEAKER LARGE LARGE/SMALL/NONE LFE/BASS OUT BOTH SUBWOOFER/MAIN/BOTH FRONT EFFECT SPEAKER YES/NONE MAIN LEVEL NORMAL NORMAL/–10dB...
  • Page 7: Internal View

    DSP-AX2 INTERNAL VIEW F AMP (2) P.C.B. MAIN (2) P.C.B. MAIN (4) P.C.B. MAIN (5) P.C.B. VIDEO (3) P.C.B. VIDEO (2) P.C.B. VIDEO (1) P.C.B. VIDEO (4) P.C.B. FUNCTION P.C.B. OPERATION (2) P.C.B. F AMP (1) P.C.B. MAIN (1) P.C.B.
  • Page 8: Self Diagnosis Function

    DSP-AX2 SELF DIAGNOSIS FUNCTION This product has a built-in self diagnosis function (DIAG) to facilitate inspection, measurement and determination of a faulty item, if any. There are 13 DIAG menu items each of which has sub-menu items. Listed in the table below are menu items and sub-menu items.
  • Page 9 DSP-AX2 DIAG menu Sub-menu Remote control code (key) IF STATUS 16. YSS2 --------- 17. YSS3 --------- DSP RAM CHECK DSP RAM check 7A---0A (CD SKIP +) SUM/VER/PORT 1. Version 7A---0D (CD REW) 2. Checksum (ALL/PROG) --------- 3. Checksum (232C/MAKER) --------- 4.
  • Page 10 DSP-AX2 Display at the start of DIAG The diagnostic menu appears on the monitor screen. (It remains on display until it is canceled.) DIAGNOSTIC MENU 1.DSP THR 8.RS232C 2.HP ROUTE 9.PRESET 3.RAM THR 10.AD DATA 4.PRO LOGIC 11.STATUS 5.SP SET 12.DSP RAM...
  • Page 11 DSP-AX2 In the case where the protection function works after DIAG has been started and the power is turned off ; When the protection function (*2) works, the history of the protection function appears on display and the power turns off. Repair the faulty parts according to the displayed history.
  • Page 12 DSP-AX2 Operation procedure of DIAG menu and SUB-MENU There are No.1 to No.13 MENU items and some SUB-MENU items as well. DIAG menu selection Main unit: DSP PROGRAM selector (forward/reverse) Remote control unit: Cursor h(forward)/g(reverse) key SUB-MENU selection Main unit: EFFECT key (forward) Remote control unit: Cursor +(forward)/–(reverse) key...
  • Page 13 DSP-AX2 Details of DIAG menu 1. DSP THROUGH There are 3 sub menu items (ANALOG BYPS, DSP 0dB, FULL BIT). ANALOG BYPS [Remote control code: 7A—90(PRG 9)] 1. DSP THROUGH • The input mode is fixed to use the analog (A/D) system.
  • Page 14 DSP-AX2 DSP 0dB [Remote control code: 7A—91 (PRG 10)] 1. DSP THROUGH • The input signal is automatically identified and switched in the priority order of dts DOLBY DSP 0dB DIGITAL PCM AUDIO Analog (A/D) according to the signal detection.
  • Page 15 DSP-AX2 FULL BIT [Remote control code: 7A—92 (PRG11)] 1. DSP THROUGH • The head margin is unused and the digital data is output in full bit. FULL BIT • The same applies as “DSP 0dB” except that the digital data is output in full bit at D/A but SWFR is not output in full bit.
  • Page 16 DSP-AX2 (In the case of multi-ch source) • AC3D3 outputs signals using DOLBY DIGITAL/dts decode operation. AC3D3 YSS928 FILTER ANALOG CODEC DF1704 PCM1704 SDOA0 (A/D) MAIN AK4527 (Decoder) FILTER SUB DSP DF1704 PCM1704 DD/dts DECODER C/LFE SDOB0 FILTER DF1704 PCM1704...
  • Page 17 DSP-AX2 3. RAM THROUGH The input data is automatically identified and switched in the priority order of dts DOLBY DIGITAL PCM AUDIO Analog (A/D) according to the signal detection. The main L/R uses the analog through method when analog signals are input and the DSP through method when digital signals are input.
  • Page 18 DSP-AX2 4. PRO LOGIC The input signal is automatically identified and switched in the priority order of dts DOLBY DIGITAL PCM AUDIO Analog (A/D) according to the signal detection. The operation conforms to the ordinary DOLBY Normal sound field. YSS928 [Remote control code: 7A—0C (CD FF)]...
  • Page 19 DSP-AX2 5. SPEAKERS SET The input signal is automatically identified and switched in the priority order of dts DOLBY DIGITAL PCM AUDIO Analog (A/D) according to the signal detection. There are seven sub-menu items. The signals output from the DSP are the same as 1. DSP THROUGH: DSP 0dB.
  • Page 20 DSP-AX2 6. DISPLAY CHK This program is used to check lighting of the FL display which changes as shown below according to operation of the sub-menu. The signals are processed using EFFECT OFF. (The L/R signals are output using ANALOG MAIN BYPASS set- ting.)
  • Page 21 DSP-AX2 7. MANUAL TEST The test noise is output by the noise generator with a built-in DSP from the channels specified by the sub-menu. There are ten sub-menu items. ALL [Remote control code: 7A—00 (TAPE PLAY)] 7. MANUAL TEST Noise is output from all channels.
  • Page 22 DSP-AX2 9. PRESET This menu reserves and inhibits initialization of the back-up RAM (parameter, set menu contents, etc. for the sound field program). The signals are processed using EFFECT OFF. (The L/R signals are output using ANALOG MAIN BYPASS set- ting.)
  • Page 23 DSP-AX2 KY0/KY1/RECOUT (Detection of key scan/REC OUT)[Remote control code: – – – – ] KY0 KY1 RECOUT 100 100 060 KY0/KY1: Panel key of the main unit (10% step) • When the standard value is deviated by ±4%, KEY A/D fails to function properly. In this case, check the circuit voltages, soldering condition, etc.
  • Page 24 DSP-AX2 11. IF STATUS (Input function status) Using this menu, the status data is displayed in the hexadecimal notation one after another. During signal processing, the status before execution of this menu is maintained. To convert the analog input to the digital input, use the following procedure.
  • Page 25 DSP-AX2 5th byte Indicate Indicates the information on the signal processing status. 0 0 0 0 0 0 0 0 bit7 MUTE requested 7 6 5 4 3 2 1 0 bit6 dts flashing (Red) bit5 EX sound field being processed...
  • Page 26 Tuner mode 0 (Caution 1) Tuner mode 1 (Caution 1) RDS with (1) / without (0) Model type: DSP-AX2 (1) / RX-V3000 (0) ZONE with (1) / without (0) VIDEO format: PAL (1) / NTSC (0) Head phone: Unconnected (1) / connected (0)
  • Page 27: Amp Check

    DSP-AX2 AMP CHECK Confirmation of Idling Current 1) No signal applied. 2) Non-loaded condition. 3) Aging is 10 minutes Test Point Item Rating (DC) Q58 Base – Emitter (MAIN [1] P.C.B.) MAIN L Q65 Base – Emitter (MAIN [1] P.C.B.) MAIN R Q72 Base –...
  • Page 28 DSP-AX2 IC DATA IC526 : M30802SGP (FUNCTION P.C.B.) 16 bit µ-COM (CPU) P44/CS3/A20(MA12) P10/D8 P45/CS2/A21 P07/D7 P46/CS1/A22 P06/D6 P47/CS0/A23 P05/D5 P125 P04/D4 P126 P114 P127 P113 P50/WRL/WR/CASL P112 P51/WRH/BHE/CASH P111 P52/RD/DW P110 P53/BCLK/ALE/CLKOUT P03/D3 P130 P02/D2 P131 P01/D1 P00/D0 P132...
  • Page 29 BYTE BYTE External data bus width select input (16bit width: VSS) CNVSS CNVSS Microprocessor mode select input (Microprocessor mode: VCC) MODEL Model detect (0 : RX-V3000, 1 : DSP-AX2) BOOT 232C Boot terminal (Not used) RESET /RES Reset input XOUT...
  • Page 30 DSP-AX2 IC526 : M30802SGP (FUNCTION P.C.B.) 16 bit µ-COM (CPU) PORT Name Function Power On Power Off Backup P133 /BEC Bass Extension Control Ground P132 /Z2MT ZONE2 Mute + 5V P131 /HPMT Head Phone Mute P130 /FMTF Full Mute (FL/FR)
  • Page 31 DSP-AX2 IC526 : M30802SGP (FUNCTION P.C.B.) 16 bit µ-COM (CPU) PORT Name Function Power On Power Off Backup Data bus Data bus Data bus P114 /MLV Main Level Select (0/-10dB) P113 Power Relay P112 Speaker Relay Effect P111 Speaker Relay Main B...
  • Page 32 DSP-AX2 IC501 : YSS928 (DSP P.C.B.) AC3D3 RAMA10 RAMD2 RAMA11 RAMD1 RAMD0 VDD2 VDD2 SELI8 SELI7 OPORT7 SELI6 OPORT6 SELI5 OPORT5 RAMA12 OPORT4 RAMA13 OPORT3 RAMA14 OPORT2 RAMA15 OPORT1 RAMA16 OPORT0 RAMA17 ZEROBF2L OVFB/END ZEROBF2R ZEROFLG ZEROBF3L ZEROBF3R NONPCM VDD1...
  • Page 33 DSP-AX2 IC501 : YSS928 (DSP P.C.B.) AC3D3 Name Function Crystal oscillator connecting terminal Crystal oscillator connecting terminal (24.576MHz ) SELI1 Built-in selector input 1 (AXD) SELI0 Built-in selector input 0 (GND) SELOA Built-in selector output A (ISEL) SELOB Built-in selector output B...
  • Page 34 DSP-AX2 IC501 : YSS928 (DSP P.C.B.) AC3D3 Name Function SDWCKI1 Word clock input terminal for SDIB, SDOB interface (Unconnected) SDBCKI1 Bit clock input terminal for SDIB, SDOB interface (Unconnected) Ground terminal SDOB3 PCM output terminal from Sub DSP SDOB2 PCM output terminal from Sub DSP...
  • Page 35 DSP-AX2 IC501 : YSS928 (DSP P.C.B.) AC3D3 Name Function RAMA5 Sub DSP: External memory address terminal 5 RAMA2 Sub DSP: External memory address terminal 2 SELI13 Built-in selector input 13 (AC3RF) SELI12 Built-in selector input 12 (CXE) SELI11 Built-in selector input 11...
  • Page 36 DSP-AX2 IC503 : PM4007A (DSP P.C.B.) AC-3 RF Demodulator AVDD CPIN CMIN AGND DOUT DOUTB WINGT SYST0 SYST1 ADST0 ADST1 BUNRI AGND AVDD Name Function Ground (0V) +5V power supply RESET System resetting terminal (reset at “L”) OSCON Oscillation control terminal. Oscillation ON at “H”, set to “H” normally and to “L” when in standby state...
  • Page 37 DSP-AX2 IC503 : PM4007A (DSP P.C.B.) AC-3 RF Demodulator Name Function External RAM address output. Address 6 External RAM address output. Address 7 Ground terminal (0V) +5V power supply External RAM address output. Address 12 External RAM address output. Address 14 (MSB) External RAM write enable signal, active at “L”...
  • Page 38 DSP-AX2 IC503 : PM4007A (DSP P.C.B.) AC-3 RF Demodulator Name Function AVDD +5V power supply for analog comparator CPIN Analog comparator input, positive side (Non-reverse side: QPSK input) CMIN Analog comparator input, negative side (reverse side) AGND Ground terminal for analog comparator (0V)
  • Page 39 DSP-AX2 IC610 : LC74781-9798 (VIDEO P.C.B.) Superimpose VSS1 VDD1 XTAL IN XTAL OUT CTRL3 CTRL1 CTRL2 BLANK SEP IN OSC IN SEP OUT OSC OUT SEPC CHARA SYN IN VDD1 SCLK CV IN VDD2 CV OUT SERIAL 8 BIT LATCH...
  • Page 40 DSP-AX2 IC610 : LC74781-9798 (VIDEO P.C.B.) Superimpose Pin No. Symbol Terminal name Function Ground terminal Connection to GND (Digital system ground terminal) VSS1 Crystal oscillation Terminal to connect the crystal of the crystal oscillator for internal synchronous XTAL IN terminal signal generation and a capacitor or to input an external clock.
  • Page 41 DSP-AX2 Extension Port IC611 : BU2092 (VIDEO P.C.B.) 12-bit Serial In/Parallel Out Driver DATA CONTROL CLOCK CIRCUIT PORT Name Function Power On Power Off Backup Ground DATA DATA Serial Data Input CLOCK CLOCK Shift Clock of Data (Rise Edge Trigger)
  • Page 42: Display Data

    DSP-AX2 DISPLAY DATA V901 : 32-BT-07G (V6291200) &0 PATTERN AREA PIN CONNECTION Note 1) F1, F2 ..Filament 3) P1A~P35A, P1B~P35B ..Datum Line 5) IC ....Internal connection 2) NP ....No Pin 4) 1GA~16GA, 1GB~16GB ....Grid 6) Fd terminals are to be supplied through 51kΩ from Ec.
  • Page 43 DSP-AX2 ANODE CONNECTION...
  • Page 44: Pin Connection Diagram

    DSP-AX2 PIN CONNECTION DIAGRAM µPC29M33T-E1 µPC4570HA NJM79M05FA NJM7805FA PQ025EZ5MZP M5220L TC74HCU04AP NJM79M12FA NJM7812FA NJM2068L-D TC4066BP NJM78M05FA NJM4556AL 1: VIN 1: INPUT 2: VC 1:COMMON 2: GND 1: OUTPUT 3: VO 2:INPUT 3: OUTPUT 2: COMMON 4: NC 3:OUTPUT 4: GND...
  • Page 45: Block Diagram

    DSP-AX2 BLOCK DIAGRAM See page E-72/J-70 (DSP) See page E-75/J-73 (MAIN) IMPEDANCE SELECTOR XL501 (EX ONLY) J, R, T ONLY XL502 RY311 F311 IC501 YSS928 Q501–503 Q504–508 IC525A IC526A IC513 AC3RF SDOA0 DE-MODULATOR IC521 – L (DAL) LD V RF PCM1704 –...
  • Page 46 DSP-AX2 BLOCK DIAGRAM See page E-77/J-75 (VIDEO) See page E-73/J-71 (FUNCTION) CONTROL C-INPUT IC601A IC607B Q604 SELECTOR D-TV/LD IC602 Y-INPUT Q601 SELECTOR CABLE IC603 Q603 IC608 Q609 C-RECOUT SELECTOR IC604 Y-RECOUT SELECTOR VCR 1 IC605 OUTPUT Q606 – 608 EXPANSION...
  • Page 47 DSP-AX2 PRINTED CIRCUIT BOARD (Foil side) Point q (Pin 1 of IC501) DSP P.C.B. V : 2V/div, H : 50 nsec/div DC, 1 : 1 probe (Lead Type Device) DSP P.C.B. (Surface Mount Device) Point w (Pin 56 of IC503)
  • Page 48 DSP-AX2 PRINTED CIRCUIT BOARD (Foil side) FUNCTION P.C.B. Semiconductor Location Ref. No. Location (Lead Type Device) D502 D503 D508 D509 D510 FROM : VIDEO (6) D511 FROM : VIDEO (1) D512 D513 FROM : F AMP (7) D514 D515 FROM : OPERATION (4)
  • Page 49: Printed Circuit Board

    DSP-AX2 PRINTED CIRCUIT BOARD (Foil side) Semiconductor Location Ref. No. Location Ref. No. Location D504 Q510 D505 Q511 D506 Q512 D507 Q513 Q515 Q517 Q541 Q542 FUNCTION P.C.B. (Surface Mount Device) B, G only J, R, T only G only...
  • Page 50 DSP-AX2 PRINTED CIRCUIT BOARD (Foil side) VIDEO (1) P.C.B. (Lead Type Device) VIDEO (1) P.C.B. #601 W601 TO : VIDEO (3) (Surface Mount Device) FROM : FUNCTION FROM : VIDEO (2) CMP0 COM1 S-VIDEO D-TV/LD CABLE VCR 1 VCR 2/DVR...
  • Page 51 DSP-AX2 PRINTED CIRCUIT BOARD (Foil side) VIDEO (2) P.C.B. VIDEO (6) P.C.B. VIDEO (6) P.C.B. VIDEO (2) P.C.B. (Lead Type Device) (Lead Type Device) (Surface Mount Device) (Surface Mount Device) VIDEO G only CONTROL MONITOR OUT RS-232C VCR 2/DVR G only...
  • Page 52 DSP-AX2 PRINTED CIRCUIT BOARD (Foil side) VIDEO (3) P.C.B. VIDEO (4) P.C.B. VIDEO (3) P.C.B. (Lead Type Device) (Surface Mount Device) AUDIO PRE OUT/MAIN IN MAIN OUT L/R D-TV/LD MAIN IN L/R CABLE REAR CENTER/CENTER SUBWOOFER L/R VCR 1 REAR L/R...
  • Page 53 DSP-AX2 PRINTED CIRCUIT BOARD (Foil side) OPERATION (1) P.C.B. (Lead Type Device) OPERATION (5) P.C.B. FROM : FUNCTION #901 (Lead Type Device) W901 TO : F AMP (1) INPUT INPUT W902 TO : OPERATION (3) BASS MODE EXTENSION SPEAKERS PROCESSOR...
  • Page 54 DSP-AX2 PRINTED CIRCUIT BOARD (Foil side) OPERATION (4) P.C.B. OPERATION (6) P.C.B. (Lead Type Device) (Lead Type Device) W972 TO : OPERATION (5) #935 W935 TO : FUNCTION EFFECT TO : FUNCTION W936 KEY0 #971 W971 TO : OPERATION (1)
  • Page 55 DSP-AX2 PRINTED CIRCUIT BOARD (Foil side) Semiconductor Location Ref. No. Location Ref. No. Location MAIN (1) P.C.B. GY W2 RE W4 BE W1 BL W3 R,T,B,G only R,T,B,G only Q53A Q53C Q60A Q60C Q67A Q67C Q74A Q74C TO : F AMP (1)
  • Page 56 DSP-AX2 PRINTED CIRCUIT BOARD (Foil side) R, T, B, G models J model Semiconductor Location MAIN (4) P.C.B. Ref. No. Location MAIN (2) P.C.B. MAIN (2) P.C.B. B2/D3 FRONT L/R – SPE- SPE+ REAR L/R SPA+ SPA- – RE W5...
  • Page 57 DSP-AX2 PRINTED CIRCUIT BOARD (Foil side) F AMP (1) P.C.B. Semiconductor Location FROM : POWER TRANSFORMER #351 #353 Ref. No. Location Ref. No. Location W351 W353 TO : MAIN (1) D351 Q351 TO : VIDEO (2) D352 Q352 D353 Q353...
  • Page 58 DSP-AX2 PRINTED CIRCUIT BOARD (Foil side) J model G model F AMP (2) P.C.B. F AMP (2) P.C.B. F AMP (4) P.C.B. F AMP (4) P.C.B. FROM : POWER TRANSFORMER FROM : POWER TRANSFORMER #311 #311 W311 W311 TO : FUNCTION...
  • Page 59: Schematic Diagram

    DSP-AX2 SCHEMATIC DIAGRAM (DSP) P-E73/J71 P-E74/J72 Point q (Pin 1 of IC501) V : 2V/div, H : 50 nsec/div DC, 1 : 1 probe X : NOT USED CIRCUIT CHANGES BY MARKET. O : USED Point w (Pin 56 of IC503)
  • Page 60 DSP-AX2 SCHEMATIC DIAGRAM (FUNCTION) P-E72/J70 P-E74/J72 P-E74/J72 Point e (Pin 20 of IC26) V : 2V/div, H : 50 nsec/div DC, 1 : 1 probe CIRCUIT CHANGES BY MARKET. X : NOT USED LEVEL CONTROL INPUT SELECTOR Point r-A (+MB : Emitter of Q506)
  • Page 61 DSP-AX2 SCHEMATIC DIAGRAM (OPERATION) IC802 : NJM2068L-D IC804 : NJM4556AL BASS EXTENSION TONE CONTROL Dual OP-Amp PHONES AMP HP MUTE – – 10.9 10.9 -8.4 P-E72/J70 µ IC803 : PC4570HA -8.4 Dual OP-Amp -8.4 P-E73/J71 – – -8.4 P-E73/J71 –Vm –Vm...
  • Page 62 DSP-AX2 SCHEMATIC DIAGRAM (MAIN) POWER AMP (L ch) 51.9 51.9 51.6 51.6 51.6 50.9 50.2 50.9 51.9 51.9 50.9 50.9 RELAY DRIVER 50.9 50.9 -1.1 -0.6 51.6 POWER SUPPLY -0.6 -1.1 -0.5 -0.5 18.8 51.8 (38.6) -51.1 AC 81.0V (60.9V) 27.2...
  • Page 63 DSP-AX2 SCHEMATIC DIAGRAM (F AMP) P-E75/J73 P-E75/J73 X : NOT USED CIRCUIT CHANGES BY MARKET. O : USED IC351 : M5220L POWER AMP (FRONT) Dual OP-Amp POWER SUPPLY – – 27.0 24.6 27.0 SAME PAGE -27.2 27.0 D-6/D-7 AC 43.3V P-E78/J76 50.4...
  • Page 64 DSP-AX2 SCHEMATIC DIAGRAM (VIDEO 1/2) Point t (Pin 3 of IC610) V : 1V/div, H : 50 nsec/div DC, 1 : 1 probe P-E78/J76 P-E73/J71 P-E78/J76 INPUT SELECTOR S-SIGNAL DETECTOR -0.1 -0.1 -0.1 -4.9 IC601 : TK15420M VIdeo Amp –IN –...
  • Page 65 DSP-AX2 SCHEMATIC DIAGRAM (VIDEO 2/2) P-E73/J71 RS232C INTERFACE P-E77/J75 P-E73/J71 P-E77/J75 P-E76/J74 F AMP (1) P-E73/J71 -4.9 INPUT -4.9 SELECTOR -4.9 -0.1 P-E73/J71 COMPONENT VIDEO REC OUT SELECTOR SELECTOR -4.9 -0.1 -4.9 -4.9 -4.9 -0.1 -0.1 -0.1 VIDEO AMP IC951 : HIN202ECBN-T...
  • Page 66: Parts List

    DSP-AX2 WARNING PARTS LIST Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. Carbon resistors (1/6W or 1/4W) are not included in the ELECTRICAL PARTS ELECTRICAL PARTS List. For the parts No. of the carbon resistors, refer to last page.
  • Page 67 DSP-AX2 P.C.B. DSP Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts...
  • Page 68 DSP-AX2 P.C.B. DSP Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts...
  • Page 69 DSP-AX2 P.C.B. DSP Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts...
  • Page 70 DSP-AX2 P.C.B. DSP & F AMP Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts...
  • Page 71 DSP-AX2 P.C.B. F AMP Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts...
  • Page 72 DSP-AX2 P.C.B. F AMP & MAIN Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts...
  • Page 73 DSP-AX2 P.C.B. MAIN Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts...
  • Page 74 DSP-AX2 P.C.B. MAIN Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts...
  • Page 75 DSP-AX2 P.C.B. MAIN Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts Note) Those parts marked with “#” are not included in the P.C.B. ass'y.
  • Page 76 DSP-AX2 P.C.B. MAIN & FUNCTION Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts...
  • Page 77 DSP-AX2 P.C.B. FUNCTION Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts...
  • Page 78 DSP-AX2 P.C.B. FUNCTION Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts...
  • Page 79 DSP-AX2 P.C.B. FUNCTION & VIDEO Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts...
  • Page 80 DSP-AX2 P.C.B. VIDEO Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts...
  • Page 81 DSP-AX2 P.C.B. VIDEO & OPERATION Schm Schm Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts...
  • Page 82 DSP-AX2 P.C.B. OPERATION CHIP RESISTOR Schm Schm Schm Schm Ref. PART NO. Description Ref. PART NO. Description Ref. PART NO. Description Ref. PART NO. Description New Parts New Parts New Parts New Parts...
  • Page 83 DSP-AX2 EXPLODED VIEW B model R model G model 23-1 4-10 200-2 4-12 4-10 5-13 2-1-28 2-1-17 2-1-24 200-1 2-1-6 2-1-5 2-1-4 2-1-26 2-1-27 2-1-23 2-1-26 2-1-28 2-23 2-21 2-1-3 2-1-25 2-1-15 2-1-18 2-1-22 2-11 2-18 2-21 2-21 2-1-16 2-19...
  • Page 84 DSP-AX2 MECHANICAL PARTS Ref. Ref. PART NO. Description Remarks Markets PART NO. Description Remarks Markets New Parts New Parts...
  • Page 85 DSP-AX2 Ref. Ref. PART NO. Description Remarks Markets PART NO. Description Remarks Markets New Parts New Parts...
  • Page 86: Remote Control Transmitter

    DSP-AX2 REMOTE CONTROL TRANSMITTER SCHEMATIC DIAGRAM 100Kx8x2 100Kx2 K73:LIGHT SW 3.3BU 1KΩx18 COM1 0.1µ COM2 COM3 COM4 LCD PANEL (COM8xSEG25) COM5 COM6 5X7 FONT X 5 DIGIT COM7 COM8 (P.U) P44 (P.U) P45 (P.U) P46 (P.U) P47 COM1 COM1 COM2...
  • Page 87 DSP-AX2 Key arrangement TRANSMISSION INDICATOR...
  • Page 88 DSP-AX2...
  • Page 89 DSP-AX2 Parts List for Carbon Resistors Value 1/4W Type Part No. 1/6W Type Part No. Value 1/4W Type Part No. 1/6W Type Part No. 1.0 Ω 3100 3100 10 kΩ 7100 7100 HJ35 HF85 HF45 HF45 DSP-AX2 1.8 Ω 3180 11 kΩ...

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