JBL-DSC1000-dsc-sm 电路图 维修手册.pdf
《JBL-DSC1000-dsc-sm 电路图 维修手册.pdf》由会员分享,可在线阅读,更多相关《JBL-DSC1000-dsc-sm 电路图 维修手册.pdf(54页珍藏版)》请在收音机爱好者资料库上搜索。
1、DSC 1000 DIGITAL SIMPLY CINEMA SERVICE MANUAL The DSC 1000 Controller is shown here. RadioFans.CN 收音机爱 好者资料库 This Service Manual includes service information for ? DSC1000 head unit only. ? For service information on the speaker system see JBL ? SCS200.5 Service Manual ENGLISH DSC 1000 CONTROLLER SP
2、ECIFICATIONS DVD player Pickup:Semiconductor laser, wavelength 650nm Signal system:NTSC / PAL Video signal horizontal resolution:More than 480 lines (DVD) Video signal-to-noise ratio:More than 60 dB (DVD) Audio frequency response:DVD (PCM): 20Hz 22kHz (+/- 1.0dB) (Stereo) CD (PCM): 20Hz 20kHz (+/- 1
3、.0dB) Audio signal-to-noise ratio:More than 80 dB (PCM) Total harmonic distortion:Less than 0.01% (PCM) Dynamic range: DVD (PCM): More than 85 dB (EIAJ, 2kHz) CD: More than 85 dB (EIAJ) FM Tuner System:PLL quartz-locked digital synthesizer system Tuning range:87.50 108.00 MHz Antenna terminals:75 oh
4、ms, unbalanced Intermediate frequency:10.7 MHz Video Outputs Component Video Output: Y: 1 Vp-p/75 Ohms, sync negative polarity Cr: 0.7 Vp-p/75 Ohms Cb: 0.7 Vp-p/75 Ohms CVBS Video:1 Vp-p 75 ohms S-video: Y: 1 Vp-p 75 ohms C: PAL 0.3 Vp-p 75 ohms / NTSC 0.286 Vp-p 75 ohms Audio line Outputs Audio L/R
5、: 1 Vrms, 1 kilohms General Power requirements: AC 230 V, 50 Hz Power consumption: 20 W Dimensions (WxHxD): 431 x 75 x 352 mm, 17 x 3 x 14 Weight: 8.5 kg, 18.7 lb. * Designs and specifications are subject to change without notice. JBL continually strives to improve its products by introducing design
6、 refinements into existing models without notice. For this reason, the DSC 1000 systems may differ in some respects from the published specifications and descriptions, but will always equal or exceed the original specifications unless otherwise stated. CONSUMERS SHOULD NOTE THAT NOT ALL HIGH DEFINIT
7、ION TELEVISION SETS ARE FULLY COMPATIBLE WITH THIS PRODUCT AND MAY CAUSE ARTIFACTS TO BE DISPLAYED IN THE PICTURE. IN CASE OF 525 OR 625 PROGRESSIVE SCAN PICTURE PROBLEMS, IT IS RECOMMENDED THAT THE USER SWITCH THE CONNECTION TO THE STANDARD DEFINITION OUTPUT. IF THERE ARE QUESTIONS REGARDING OUR TV
8、 SET COMPATIBILITY WITH THIS MODEL 525p AND 625p DVD PLAYER, PLEASE CONTACT OUR CUSTOMER SERVICE CENTER. RadioFans.CN 收音机爱 好者资料库 1 SERVICING PRECAUTIONS NOTES REGARDING HANDLING OF THE PICK-UP 1. Notes for transport and storage 1) The pick-up should always be left in its conductive bag until immedia
9、tely prior to use. 2) The pick-up should never be subjected to external pressure or impact. 2. Repair notes 1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials. 2) The pick-up should always be handled correctly and carefully, taking care to avoid e
10、xternal pressure and impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or damage to the printed-circuit board. 3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason the adjustment point an
11、d installation screws should absolutely never be touched. 4) Laser beams may damage the eyes! Absolutely never permit laser beams to enter the eyes! Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged. 5) Cleaning the lens surface If there is dust on
12、the lens surface, the dust should be cleaned away by using an air bush (such as used for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cot- ton swab should be used, taking care not to distort this. 6) Never attempt to disassemble the pick-up. Sprin
13、g by excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up. Storage in c
14、onductive bag NEVER look directly at the laser beam, and dont let contact fingers or other exposed skin. Magnet How to hold the pick-up Conductive Sheet Cotton swab Pressure Pressure Drop impact RadioFans.CN 收音机爱 好者资料库 2 NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1. Preparations 1) Compact disc pla
15、yers incorporate a great many ICs as well as the pick-up (laser diode). These compo- nents are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and for that reason components should be handled with care. 2) The pick-up i
16、s composed of many optical components and other high-precision components. Care must be taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strong magnetism is present, or where there is excessive dust. 2. Notes for repair 1) Before replacing a component par
17、t, first disconnect the power supply lead wire from the unit 2) All equipment, measuring instruments and tools must be grounded. 3) The workbench should be covered with a conductive sheet and grounded. When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (Thi
18、s is because there is the possibility of damage by static electricity.) 4) To prevent AC leakage, the metal part of the soldering iron should be grounded. 5) Workers should be grounded by an armband (1M) 6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in ord
19、er to prevent static electricity changes in the clothing to escape from the armband. 7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin. Resistor (1 Mohm) Conductive Sheet Resistor (1 Mohm) Armband 3 ESD PRECAUTIONS Electrostatically Sensitive Devices (ESD) Some
20、 semiconductor (solid state) devices can be damaged easily by static electricity. Such components com- monly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated cir- cuits and some field-effect transistors and semiconductor chip components. The follow
21、ing techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively,
22、 obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive sur- face such as alumi
23、num foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as anti-static can generate electrical charges suff
24、icient to damage ESD devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD devices. 6. Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it. (Most replacement ESD devices are
- 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:
- JBL-DSC1000-dsc-sm 电路图 维修手册 JBL DSC1000 dsc sm 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
ZRK M8011, M8041 - Schemat.zip
MENDE 198gw.gif

