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1、DSP-AX2 DSP-AX2 AV AMPLIFIER 100729 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,
2、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 produc
3、t 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 cap
4、abilities, 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,
5、therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributors Service Division. WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body ma
6、y 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. IMPORTANT NOTICE DSP-AX2 SERVICE MANUAL I CONTENTS TO SERV
7、ICE 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 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 PAR
8、TS LIST .79 102 REMOTE CONTROL TRANSMITTER.103 108 RadioFans.CN 收音机爱 好者资料库 DSP-AX2 DSP-AX2 I TO SERVICE PERSONNEL Critical Components Information Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. AC LEAKA
9、GE TESTER OR EQUIVALENT EQUIPMENT UNDER TEST INSULATING TABLE WALL OUTLET 1 IMPEDANCE SELECTOR WARNING Do not change the IMPEDANCE SELECTOR switch setting while the power to this unit is on, otherwise this unit may be damaged. I FRONT PANEL RadioFans.CN 收音机爱 好者资料库 DSP-AX2 DSP-AX2 2 M R, T models I R
10、EAR PANELS 240 M B model M G model RadioFans.CN 收音机爱 好者资料库 DSP-AX2 DSP-AX2 3 I AUDIO SECTION Minimum RMS Output Power per Channel MAIN, 20Hz to 20kHz, 0.02% THD, 8 . . . 100W+100W CENTER, 20Hz to 20kHz, 0.02% THD, 8 . . . . . . 100W REAR, 20Hz to 20kHz, 0.02% THD, 8 . . . 100W+100W REAR CENTER, 20Hz
11、 to 20kHz, 0.02% THD, 8 . . . . . . . . . . . . . . . 100W FRONT, 1kHz, 0.05% THD, 8 . . . . . . . . . . . . 25W+25W Maximum Power per Channel (R, T models only) MAIN, 1kHz, EIAJ, 10% THD, 8 . . . . . . . . 140W+140W CENTER, 1kHz, EIAJ, 10% THD, 8 . . . . . . . . . . . 140W REAR, 1kHz, EIAJ, 10% THD
12、, 8 . . . . . . . 140W+140W REAR CENTER, 1kHz, EIAJ, 10% THD, 8 . . . . . 140W FRONT, 1kHz, EIAJ, 10% THD, 8 . . . . . . . . 35W+35W Dynamic Power per Channel (R, T models only) MAIN, 8/6/4/2 . . . . . . . . . . . . . . . . . . 140/170/220/320W Dynamic Headroom (R, T models only) 8 . . . . . . . . .
13、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.46dB DIN Standard Output Power per Channel (B, G models only) MAIN, 1kHz, 0.7% THD, 4 . . . . . . . . . . . . 160W+160W CENTER, 1kHz, 0.7% THD, 4 . . . . . . . . . . . . . . . 160W REAR, 1kHz, 0.7% THD, 4 . . . . . . . . . . . . 160W+160W RE
14、AR CENTER, 1kHz, 0.7% THD, 4 . . . . . . . . . . 160W FRONT, 1kHz, 0.7% THD, 4 . . . . . . . . . . . . . 40W+40W IEC Power (B, G models only) MAIN, 1kHz, 0.015% THD, 8 . . . . . . . . . . . . . . . . 115W Power Band Width MAIN, 0.08% THD, 50W/8 . . . . . . . . . . . 10Hz to 50kHz Damping Factor MAIN
15、, 20Hz to 20kHz, 8 . . . . . . . . . . . . . . . 200 or more Input Sensitivity/Impedance CD, etc (1kHz, 100W/8) . . . . . . . . . . . . . . 150mV/47k PHONO MM . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5mV/47k MAIN IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1V/47
16、k Maximum Input Signal Level PHONO MM, 1kHz, 0.05% THD, (Effect on) . . . . 110mV CD, etc, (Effect on) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3V Output Level/Impedance REC OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150mV/1k PRE OUT (MAIN, etc) . . . . . . . . . . .
17、. . . . . . . . . 1V/1.2k SUB WOOFER (EFFECT OFF, MAIN SP : SMALL) MONO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.0V/1.2k Maximum Voltage Output (20Hz to 20kHz, 1% THD) PRE OUT (MAIN L/R) . . . . . . . . . . . . . . . . . . . . . . . . 1.5V Headphone Jack Rated Output/Impe
18、dance CD, etc (1kHz, 40mV, 8) . . . . . . . . . . . . . . 150mV/100 Frequency Response CD, etc (10Hz to 100kHz, MAIN L/R) . . . . . . . . +0/-3.0dB MAIN IN (5Hz to 100kHz, MAIN L/R) . . . . . . . . +0/-3.0dB RIAA Equalization Deviation (20Hz to 20kHz) PHONO MM . . . . . . . . . . . . . . . . . . . .
19、 . . . . . . . . . 00.5dB Tone Control Characteristics BASS :Boost/cut . . . . . . . . . . . . . . . . . . 10dB (50Hz) Turnover Frequency . . . . . . . . . . . . . . . . 350Hz TREBLE : Boost/cut . . . . . . . . . . . . . . . . . .10dB (20kHz) Turnover Frequency . . . . . . . . . . . . . . . 3.5kHz C
20、enter Graphic Equalizer Frequency . . . . . . . . . . . . 100/300/1k/3k/10kHz Boost/cut . . . . . . . . . . . . . . . . . . . . . . . . . .6dB Q . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7 Bass Extension . . . . . . . . . . . . . . . . . . . . . . . . . .+6dB (60Hz) Filter
21、Characteristics MAIN, CENTER, REAR SP SMALL : H.P.F. . . . . . . . . . . . . . . fc = 90Hz, 12dB/oct. SUB WOOFER OUT : L.P.F. . . . . . . fc = 90Hz, 18dB/oct. I SPECIFICATIONS I VIDEO SECTION Video Signal Type B, G models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAL R, T mode
22、ls . . . . . . . . . . . . . . . . . . . . . . . . . . . NTSC/PAL Composite Video Signal Level . . . . . . . . . . . . . . 1Vp-p/75 S-Video Signal Level Y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Vp-p/75 C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23、. .0.286Vp-p/75 Component Signal Level Y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Vp-p/75 Cb/Cr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.7Vp-p/75 Video Maximum Input Level . . . . . . . . . . . . . . . . . .1.5Vp-p Video Signal-to-Noise Ratio .
24、 . . . . . . . . . . . . . . . . . . . 50dB Monitor Output Frequency Response Composite Video Signal . . . . . . . . . . . 5Hz10MHz, 3dB S-Video Signal . . . . . . . . . . . . . . . . . . 5Hz10MHz, 3dB Component Signal . . . . . . . . . . . . . . . . DC30MHz, 3dB Total Harmonic Distortion (20Hz to 2
25、0kHz) PHONO MM to REC OUT (3V) . . . . . . . . . . . . . . . . 0.01% CD, etc, to PRE OUT MAIN L/R (1V) . . . . . . . . . . 0.005% CD, etc, to SP OUT L/R (50W/8) . . . . . . . . . . . . 0.015% MAIN IN to SP OUT (50W/8) . . . . . . . . . . . . . . . 0.008% Signal-to-Noise Ratio (IHF-A-Network) PHONO M
26、M, Input Shorted 5mV (Effect off) . . . . . . 86dB CD, etc, Input Shorted 150mV (Effect off) . . . . . . . . 96dB CD, etc, Input Shorted 250mV (Effect off) . . . . . . . 100dB Residual Noise (IHF-A-Network) MAIN, SP OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150V Channel Separatio
27、n (Vol. 30dB, Effect off) PHONO MM, Input Shorted, 1kHz/10kHz . . . . 60dB/55dB CD, etc, Input 5.1k Shorted, 1kHz/10kHz . . 60dB/45dB Muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DSP-AX2 DSP-AX2 4 I GENERAL Power Supply B, G models . . . . . . . . . . . . .
28、. . . . . . . . . . AC 230V, 50Hz R, T models . . . . . . . . . . . AC 110/120/220/240V, 50/60Hz Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . 480W Maximum Power Consumption (R, T models only) . . 770W Standby Power Consumption B, G models . . . . . . . . . . . . . . . . .
29、. . . . . . . . . . . . . . . 1.2W R, T models (AC220V, 50Hz) . . . . . . . . . . . . . . . . . . . 1.5W AC Outlets R, T, G models, Switched x 3 . . . . . . . . 100W max (Total) B models, Switched x 1 . . . . . . . . . . . . . . . . . . 100W max Dimensions (W x H x D) . . . . . . . . . . . . . 449 x
30、 191 x 468mm (17-11/16” x 7-1/2” x 18-7/16”) Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.0 kg (48 lbs 8oz) Finish R, B, G, T models . . . . . . . . . . . . . . . . . . . . . . Black color R, B, G, T models . . . . . . . . . . . . . . . . . . . . . . . Gold color G model . . . . .
31、 . . . . . . . . . . . . . . . . . . . . . . .Titanium color Accessories . . . . . . . . . . . . Remote Control Transmitter x 1 Battery (size AA, R06) x 3 Power Cord x 1(G only) Sheet/side(L, R) x 1 * Specifications subject to change without notice. B . . . . . . . . British model G . . . . . Europe
32、an model R . . . . . . . General model T . . . . . . . . . China model G DIMENSIONS 429 (167/8) 468 (187/16) 16 (5/8) 449 (1711/16) 21 (13/16) 23 (7/8) 170 (611/16) 191 (71/2) Units : mm (inch) Manufactured under license from Dolby Laboratories. Dolby, AC-3, Pro Logic, and the double-D symbol V are
33、trademarks of Dolby Laboratories. 1992-1997 Dolby Laboratories. All rights reserved. Manufactured under license from Digital Theater Systems, Inc. US Pat. No. 5,451,942 and other world-wide patents issued and pending. DTS, DTS Digital Surround, are trademarks of Digital Theater Systems, Inc. copyrig
34、ht 1996 Digital Theater Systems, inc. All rights reserved. DSP-AX2 DSP-AX2 5 G SET MENU TABLE No.SET MENUPRESET VALUESETTING RANGES 1.SPEAKER SET 1ACENTER SPEAKERLARGELARGE/SMALL/NONE 1BMAIN SPEAKERLARGELARGE/SMALL 1CREAR L/R SPEAKERLARGELARGE/SMALL/NONE 1DREAR CT SPEAKERLARGELARGE/SMALL/NONE 1ELFE/
35、BASS OUTBOTHSUBWOOFER/MAIN/BOTH 1FFRONT EFFECT SPEAKERYESYES/NONE 1GMAIN LEVELNORMALNORMAL/10dB 2.LOW FREQ. TESTTONE : OFFON/OFF OUTPUT : MAIN L/RL/C/R/RS/RC/LS/SW/FRONT FREQUENCY : 88Hz35 250Hz 3.L/R BALANCE0L 0 R (0.5 step) (L/R 10.0) 4.HP TONE CTRLBASS : 0dB6dB +3dB TREBLE : 0dB6dB +3dB 5.CENTER
36、GRAPHIC EQ.EACH ch : 0dB100Hz 10kHz, 6dB +6dB 6.INPUT RENAMEDVD(Currently selected input) 7.I/O ASSIGNING 7ACOMPONENT VIDEO INPUTA : DVDDVD, D-TV/LD, CABLE, SAT, VCR1, VCR2/DVR, V-AUX B : D-TV/LDDVD, D-TV/LD, CABLE, SAT, VCR1, VCR2/DVR, V-AUX 7BOPTICAL OUT(1) : MD/TAPEDVD, MD/TAPE, D-TV/LD, CABLE, S
37、AT, VCR1, VCR2/DVR, V-AUX, PHONO, CD, TUNER, CD-R (2) : CD-RDVD, MD/TAPE, D-TV/LD, CABLE, SAT, VCR1, VCR2/DVR, V-AUX, PHONO, CD, TUNER, CD-R 7COPTICAL IN(3) : CDCD, TUNER, CD-R, MD/TAPE, DVD, D-TV/LD, CABLE, SAT, VCR1, VCR2/DVR, PHONO (4) : CD-RCD, TUNER, CD-R, MD/TAPE, DVD, D-TV/LD, CABLE, SAT, VCR
38、1, VCR2/DVR, PHONO (5) : DVDCD, TUNER, CD-R, MD/TAPE, DVD, D-TV/LD, CABLE, SAT, VCR1, VCR2/DVR, PHONO (6) : D-TV/LDCD, TUNER, CD-R, MD/TAPE, DVD, D-TV/LD, CABLE, SAT, VCR1, VCR2/DVR, PHONO (7) : SATCD, TUNER, CD-R, MD/TAPE, DVD, D-TV/LD, CABLE, SAT, VCR1, VCR2/DVR, PHONO 7DCOAXIAL IN(8) : CDCD, TUNE
39、R, CD-R, MD/TAPE, DVD, D-TV/LD, CABLE, SAT, VCR1, VCR2/DVR, V-AUX, PHONO (9) : CABLECD, TUNER, CD-R, MD/TAPE, DVD, D-TV/LD, CABLE, SAT, VCR1, VCR2/DVR, V-AUX, PHONO (10) : LD RF (R, T only)LD RF, CD, TUNER, CD-R, MD/TAPE, DVD, D-TV/LD, CABLE, SAT, VCR1, VCR2/DVR, V-AUX, PHONO 8.INPUT MODEDVD : AUTOA
40、UTO/LAST 9.PARAMETER INITIALIZEOFFPROGRAM 1 12 10.DOLBY DIGITAL SET 10A LFE LEVELSPEAKER : 0dB20dB 0dB HEAD PHONE : 0dB20dB 0dB 10B DYNAMIC RANGESPEAKER : MAXMAX/STD/MIN HEAD PHONE : MAXMAX/STD/MIN 11.DTS SET 11A LFE LEVELSPEAKER : 0dB10dB +10dB HEAD PHONE : 0dB10dB +10dB 12.6.1/ES AUTOONON/OFF 13.S
41、PEAKER DELAY TIMECENTER : 0ms0ms 5ms (1ms step) REAR CENTER : 3ms0ms 30ms 14.DISPLAY SETBLUE BACK : AUTOAUTO/OFF OSD SHIFT : 05 +5 DIMMER : 04 0 15.MEMORY GUARDOFFON/OFF S: S video signal V: Composite video signal O: YES X: NO : NO CARE Caution: Superimposing function is not usable for component sig
42、nals. G SUPERIMPOSING Input LD, etc.OutputSuperimposing TerminalSignalMonitor connection SOOO (On screen) VOX SOXX VOO (On screen) SOOO (On screen) VXX SOXX VXO (Blue back) SXX VOX (On screen) SXO (Blue back) VXO (Blue back) DSP-AX2 DSP-AX2 6 I INTERNAL VIEW I DISASSEMBLY PROCEDURES (Remove parts in
43、 the order as numbered.) 1. Removal of Top Cover Remove 8 screws ( q, w and e ) and then remove the Top Cover in Fig. 1. 2. Removal of Bottom Cover a. Remove 13 screws ( r ) and then remove the Bottom Cover in Fig. 1. 3. Removal of Front Panel a. Remove a knob in Fig. 1. b. Remove 4 screws ( t ) and
44、 then remove the Front Panel in Fig. 1. Fig. 1 q w e r r r r t t Bottom Cover Front Panel Top Cover q q qwetry ui o !0!1!2!3 qF AMP (2) P.C.B. wMAIN (2) P.C.B. eMAIN (4) P.C.B. rMAIN (5) P.C.B. tVIDEO (3) P.C.B. yVIDEO (2) P.C.B. uVIDEO (1) P.C.B. iVIDEO (4) P.C.B. oFUNCTION P.C.B. !0OPERATION (2) P
45、.C.B. !1F AMP (1) P.C.B. !2MAIN (1) P.C.B. !3DSP P.C.B. DSP-AX2 DSP-AX2 7 I 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 ite
46、ms. Listed in the table below are menu items and sub-menu items. (Start-up and menu operation of DIAG is executed by using the main unit and its remote control unit.) DIAG menu DSP THROUGH HP ROUTE RAM THROUGH PRO LOGIC SPEAKERS SET DISPLAY CHECK MANUAL TEST RS-232C PRESET FAN/AD IF STATUS Sub-menu
47、1. ANALOG BYPASS 2. DSP 0dB 3. FULL BIT 1. 0dB 2. FULL BIT 1. 0dB 1. YSS928 1. MAIN:SMALL 0dB 2. MAIN:LARGE -10 3. CENTER:NONE 4. LFE/BASS:MAIN 5. FRONT MIX:5ch 6. REAR CENTER:MUT 7. REAR L/R:MUTE 1. EFFECT OFF (initial screen) 2. DISPLAY OFF 3. DISPLAY ALL 4. DISPLAY DIMMER (50%) 5. CHECKED PATTERN 1. ALL 2. MAIN L 3. CENTER 4. MAIN R 5. REAR R 6. REAR C 7. REAR L 8. FRONT L 9. FRONT R 10. LFE 1. TX DATA 2. HARD FLOW 1.
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