Fostex-ADDA2PCB-sup 电路图 维修手册.pdf
《Fostex-ADDA2PCB-sup 电路图 维修手册.pdf》由会员分享,可在线阅读,更多相关《Fostex-ADDA2PCB-sup 电路图 维修手册.pdf(14页珍藏版)》请在收音机爱好者资料库上搜索。
1、Service Manual Supplement Digital Master Recorder ADDA-2 PCB for Model D-25/D-30 RadioFans.CN 收音机爱 好者资料库 SAFETY INSTRUCTIONS Read instructions - All the safety and operating instruc- tions should be read before the appliance is operated. Retain instructions - The safety and operating instructions sh
2、ould be retained for future reference. Heed warnings - All warnings on the appliance and in the operating instructions should be adhered to. Follow instructions - All operating and use instructions should be followed. Water and Moisture - The appliance should not be used near water - for example, ne
3、ar a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, and the like. Carts and Stands - The appliance should be used only with a cart or stand that is recommended by the manufac- turer. An appliance and cart combination should be moved with care. Quick stops,
4、excessive force, and uneven surfaces may cause the appliance and cart combination to over- turn. Wall or Ceiling Mounting - The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer. Ventilation - The appliance should be situated so that its location or position do
5、es not interfere with its proper ven- tilation. For example, the appliance should not be situ- ated on a bed, sofa, rug, or similar surface that may block the ventilation openings; or, placed in a built-in installa- tion, such as a bookcase or cabinet that may impede the flow of air through the vent
6、ilation openings. Heat - The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) that produce heat. Power Sources - The appliance should be connected to a power supply only of the type described in the operating in
7、structions or as marked on the appliance. Grounding or Polarization - The precautions that should be taken so that the grounding or polarization means of an appliance is not defeated. Power Cord Protection - Power supply cords should be routed so that they are not likely to be walked on or pinched b
8、y items placed upon or against them, paying particular attention to cords at plugs, convenience recep- tacles, and the point where they exit from the appliance. Cleaning - The appliance should be cleaned only as rec- ommended by the manufacturer. Nonuse Periods - The power cord of the appliance shou
9、ld be unplugged from the outlet when left unused for a long period of time. Object and Liquid Entry - Care should be taken so that objects do not fall and liquids are not spilled into the en- closure through openings. Damage requiring Service - The appliance should be ser- viced by qualified service
10、 personnel when: A. B. C. D. E. Servicing - The user should not attempt to service the ap- pliance beyond that described in the operating instruc- tions. All other servicing should be referred to qualified service personnel. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. CAUTION RISK OF ELECTRIC SH
11、OCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT, FULLY INSERT. POUR VITER LES CHOCS LECTRIQUES, INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE
12、CORRE- SPONDANTE DE LA PRISE ET POUSSER JUSQU AU FOND. CAUTION: ATTENTION: The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and mainte- nance (servicing) instructions in the literature accompanying the appliance. The lightening
13、 flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the products en- closure that may be of sufficient magnitude to constitute a risk of electric shock to persons. “WARNING” “TO REDUCE THE RISK OF FIRE
14、OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOIS- TURE.” 1. 2. 3. 4. 5. 6. 7. 8. The power supply cord or the plug has been damaged; or Objects have fallen, or liquid has been spilled into the appliance; or The appliance has been exposed to rain; or The appliance does not appear to op
15、erate normally or exhibits a marked changed in performance; or The appliance has been dropped, or the enclosure damaged. 9. 10. 11. 12. 13. 14. 15. 16. 17. RadioFans.CN 收音机爱 好者资料库 D-25/D-30 ADDA-2 3 TABLE OF CONTENTS 1. ADJUSTING PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16、 . . 1-1. DA Level Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2. AD Level Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2. PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3. PA
17、TTERN DRAWING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4. CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 5 6 8 10 D-25USA/CND: 0200407 and onwards EUR: 0600407 and onwards UK: 0700191 and onwards D-30USA/CND: 0920866 an
18、d onwards EUR: 0920881 and onwards UK: 0920901 and onwards NOTES Adjustment procedures, parts list, pattern drawing and circuit diagrams are given in this manual to assist the service technician in maintaining the D-25 / D-30 with ADDA-2 PCB assy. * For your information, the followings are the seria
19、l number of D-25 / D-30 with ADDA-2 PCB assy.* RadioFans.CN 收音机爱 好者资料库 4 D-25/D-30 ADDA-2 1. ADJUSTING PROCEDURES 5030 BAL IN (XLR) UNBAL OUT (RCA) D-25 / D-30 AC VOLTMETER AUDIO OUT (XLR) CH 1CH 2CH 1CH 2 Fig. 1 1. 2. 3. 4. 1-1. DA Level Adjustment Set up the D-25/D-30 as follows. Sampling Frequenc
20、y: 44.1kHz REF Marker position: -12dB Connect the Model 5030 input (XLR) to the D-25/D-30 audio output CH 1 and CH 2 and an AC volt meter to the Model 5030 (RCA) as shown in Fig. 1. Playback the 1kHz, 0dB section (PROG NO. 1) of SONY test tape TY-7551. Adjust R192 (CH 1) and R292 (CH 2) on the ADDA-
21、2 PCB so that the AC volt meter reading is +2dBV. By this adjustment, a 1kHz, +16dBm sine wave should appear at the D-25/D-30 audio output. Adjusting points :R192 (for CH 1) on ADDA-2 PCB R292 (for CH 2) on ADDA-2 PCB D-25/D-30 ADDA-2 5 1. 2. 3. 4. AC VOLTMETER CH 1CH 2 CH 1CH 2 CH 1 CH 2 D-25 / D-3
22、0 AUDIO OUT (XLR) AUDIO IN (XLR) 5030 BAL OUTBAL IN UNBAL OUT UNBAL IN CH 1 CH 2 OSC 1-2. AD Level Adjustment Fig. 2 Set up the D-25/D-30 as follows. REF Marker position: -12dB Sampling Frequency: 44.1kHz A1, A2 INPUT MONITOR Key: ON position Connect the sine wave oscillator, Model 5030, and AC volt
23、 meter with D-25/D-30 as shown in Fig. 2. Output a 1kHz, +4dBm sine wave signal from the sine wave oscillator. Under this setting, a 1kHz, +4dBm sine wave signal will be applied to the D-25/D-30 audio input terminal. Adjust R191 (CH 1) and R291 (CH 2) on the ADDA-2 PCB so that the AC volt meter read
24、ing is -10dBV. Adjusting points :R191 (for CH 1) on ADDA-2 PCB R291 (for CH 2) on ADDA-2 PCB 6 D-25/D-30 ADDA-2 3. PARTS LIST 8274121000PCB Assy, ADDA-2, D-25/D-30 ICs Ref. No.Part No.Description U0018236540301ST, AN, REGULATOR, NJM78M05D U0028236561004ST, DG, 74HCU04 U003-0068236570101ST, DG, DRIVE
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- Fostex-ADDA2PCB-sup 电路图 维修手册 Fostex ADDA2PCB sup 维修 手册
收音机爱好者资料库所有资源均是用户自行上传分享,仅供网友学习交流,未经上传用户书面授权,请勿作他用。



Marshall-9100-62-02-Schematic电路原理图.pdf


