JVC-RMRE9000-sc-sm维修电路原理图.pdf
《JVC-RMRE9000-sc-sm维修电路原理图.pdf》由会员分享,可在线阅读,更多相关《JVC-RMRE9000-sc-sm维修电路原理图.pdf(37页珍藏版)》请在收音机爱好者资料库上搜索。
1、SERVICE MANUAL SYSTEM CONTROLLER No.20934 Apr. 2001 COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD. RM-RE9000 RM-RE9000 Area Suffix E Continental Europe Contents Safety Precautions Adjustment method Description of major ICs 1-2 1-3 1-68 dB PHASEDISPLAYSLEEPdB SPEAKER 1 -18021 2 PRESENCE EXT PROCESSOR S
2、OURCE GAIN PRESET AMP GAIN PRESET LINE 1LINE 2LINE 3 LINE 5LINE 4LINE 6 MUTINGATT MASTER VOLUME EACH ALL 1 2 3 4 5 6 7 8 RadioFans.CN 收音机爱 好者资料库 RM-RE9000 1-2 1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protec
3、tion, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only. 2. Alterations of the design or circuitry of the product shou
4、ld not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom. 3. Many electrical and mechanical
5、parts in the products have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have t
6、hese special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety c
7、haracteristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards. 4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, movin
8、g parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling. 5. Leakage currnet check (Electrical shock hazard
9、 testing) After re-assembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock. Do not use
10、 a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using a Leakage Current Tester, measure the leakage current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth
11、 ground. Any leakage current must not exceed 0.5mA AC (r.m.s.). Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor
12、 between an exposed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to eachexposed metal part, particularly any exposed metal part having a return path to the chassis, and meausre the AC voltage across the resis
13、tor. Now, reverse the plug in the AC outlet and repeat each measurement. voltage measured Any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1. This equipment has been designed and manufactured to meet international safety standards. 2. It is the legal responsibility of
14、the repairer to ensure that these safety standards are maintained. 3. Repairs must be made in accordance with the relevant safety standards. 4. It is essential that safety critical components are replaced by approved parts. 5. If mains voltage selector is provided, check setting for local voltage. G
15、ood earth ground Place this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE ! Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of thi
16、s system. In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the mark nearby are critical for safety. When replacing them, be sure to us
17、e the parts of the same type and rating as specified by the manufacturer. (Except the JC version) http:/getMANUAL.com RadioFans.CN 收音机爱 好者资料库 RM-RE9000 1-3 Remove the four screws A on the front with a hexagon wrench. Place the reverse side of the set upward. After taking off the cushions from the fo
18、ur places, remove the four screws B at the inside of the rear cover. Remove the screw B at the inside of the battery cover. Remove the rear cover and the front panel assembly. (Because they should have been tightly engaged, remove them with due care.) Remove the battery holder board assembly from th
19、e rear cover by pulling it up. 1. 2. 3. 4. 5. 6. Disassembly method Removing the rear cover (See Fig.1 to 3) Fig.1 Fig.2 Fig.3 A A B B B Front panel assembly Battery holder board assembly B B Rear cover RM-RE9000 1-4 Remove the rear cover. Remove the two screws C attaching the remote controller tran
20、smission board assembly. Remove the connector CN201 connecting the main board assembly to the remote controller transmission board assembly. 1. 2. 3. Removing the remote controller transmission board assembly (See Fig.4) Remove the rear cover. Remove the remote controller transmission board assembly
21、. After taking off the screws D & E attaching the volume knob and the rotary switch, remove their knobs. After taking off the nut F attaching the volume board assembly with a box-type driver, remove the volume board assembly. After taking off the nut G attaching the rotary switch board assembly with
22、 a box-type driver, remove the rotary switch board assembly. Remove the fourteen screws H attaching the main board assembly. Remove the connector CN103 connecting the main board assembly to the volume board assembly, and the connector CN301 connecting the main board assembly to the rotary switch boa
23、rd assembly, respectively. 1. 2. 3. 4. 5. 6. 7. Removing the main board assembly (See Fig.5 to 7) Fig.4 Fig.5 Fig.6 C Main board assembly E Volume knob Rotary switch knob CN103 F D Remote controller transmission board assembly G CN201 Fig.7 Rotary switch board assembly C Rotary switch knob Volume kn
24、ob Main board assembly H CN301 H Volume board assembly RM-RE9000 1-5 Remove the rear cover. Remove the remote controller transmission board assembly. Remove the main board assembly. Remove the two screws I attaching the modular jack board assembly. Remove the connector CN501 connecting the main boar
- 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:
- JVC RMRE9000 sc sm 维修 电路 原理图