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'8'

'DVD常见故障检修流程图'

'83161'

'DVD,常见,故障,常见故障,检修,流程,流程图'

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'A
B
  C
D
E
  F
  NO
YES
激光是否点亮
YES
B、C、D
F
E
小方法：用电吹风吹热保
修贴纸后再掀开可以保证
机箱干净
径向是否回零
径向动作停停顿顿
小方法：关机后用手拨动小
机芯，再开机观察小机芯是
否回到最里端。
注：以下描述已排除
因机芯、接插件松动
而造成的显示无碟
反转
时转时停
转几圈后停下
C176、C177、C177漏电
主控芯片坏、C150漏电
顺时钟飞转
打碟
碟不转
转几圈后停下
C134、135、136、138漏电
主控IC中点电压偏
RF信号通路滤波漏电
主控IC本身和外围
主控IC、Q8坏
显示无碟
显示无碟
显示无碟
显示无碟
打开机盖
查CD5888、C151、152，注意CD5888易损坏
C151、C152坏
C143~146漏电
顺时钟飞转、反转、时转时停
打碟
C137、晶体、C147、C148
O
N
输出异常
S525维修流程图 2
先换SDRAM，但实际更
多的是主控IC坏
播放时规律性
出现马赛克
主控芯片损坏或供电滤波
电容击穿、复位电路
C118、Q2损坏
主控IC到VFD的数据线的
滤波C184~186电容其中
一个漏电
SDRAM坏
显示屏不亮，
视频有输出
主控IC、27M晶体、C17
、C18坏
主控IC或D1、D2坏
读出碟片后，
显示屏正常跳
动，但无图像
开机画面中的
字符严重拖尾
EPROM坏
主控IC坏
显示屏不亮，
视频无输出
显示屏亮，有
声音，但电视
上无图像
刚读出碟片又
复位重新开始
读碟
显示屏亮，电
视上有斜线
以上分析，已排除对任一故障现象均有关系并且发生率
最高的电源问题。注意CL8830A有三个关键电压5V、3.3V
、2.5V，其外围均有滤波电容比较容易击穿，击穿后的
贴片电容一般会变颜色或发烫。
附
附
附
附SONY伺服
伺服
伺服
伺服+凌阳方案的维修流程
凌阳方案的维修流程
凌阳方案的维修流程
凌阳方案的维修流程（
（
（
（以
以
以
以J333、
、
、
、J330系列为例
系列为例
系列为例
系列为例）
）
）
）
音频
输出
异常
失真
一般出现在静音电路上，可以先去掉静音电路再试机，
如故障消失，一般是静音三极管损坏。
可参考上两页的“显示无碟”流程，仅需注意元件编号
声小
无声
声小
用电视的音频输入端子直接碰713的6、9脚，确定故障
在713还是4558，实际一般在4558的外围元件损坏。
无声
用电视的音频输入端子直接碰713的2脚，702正常的话
可以听到音乐声，如无则说明是后级问题，并且故障多
在713或4558的供电电路。
用电视的音频输入端子直接碰8202L
的120脚（6631的2脚），8202L正常
的话可以听到音乐声，如无则说明是
后级问题。
电源板上7912损坏
音频
输出
异常
单边
失真
用电视的音频输入端子直接碰U13  4558的第1、7脚，
如有声可说明是静音电路的Q5或Q6击穿，如无，一般
为输出电容C15或C90其中一个失效
一般出现在静音电路上，可以先去掉Q5、Q6再试机，
如故障消失，说明是Q7或Q9其中一个坏。
重点检查 -12V电源供给线路，该电压空载时往往正
常，建议首先换掉电源板上的7912
W6631、4558
或 -12电源坏
播放一段时间后逐渐无声
伺服故障
有时开机电视
上出现“行不
同步”
换一块解码板OK了，但
实际是变压器造成的
DRAM65%
８２０２Ｌ损坏30%
EPROM坏
８２０２Ｌ／晶振损坏
EPROM坏
开机画面中的
字符严重拖尾
画面出现马赛
克，快进时特
别明显
DRAM坏
有开机画面，
但无字符显示
电视上半部有
开机画面，下
半部斜线干扰
三极管坏（65%）
D2、D3坏（30%）
其它占（5%）
C57、C58、27M 损坏,也
有因DRAM坏的
三极管或晶振占50%，D4
、D5占30% ，SPCA711
、RPROM、复位  合占
８２０２Ｌ损坏
电视上有杂乱
的斜线条（行
不同步）
播放一段时间
后出现绿屏
输出异常
显示屏亮，有
声音，但电视
上无图像
显示屏不亮，
视频无输出
（也称三无）
显示屏不亮，
视频有输出
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    'dirname' => 'jtdl',
    'pdirname' => 'hangye/',
    'child' => 0,
    'disabled' => '0',
    'ismain' => 1,
    'childids' => 13,
    'thumb' => '',
    'show' => '1',
    'setting' => 
    array (
      'disabled' => '0',
      'linkurl' => '',
      'getchild' => '0',
      'notedit' => '0',
      'seo' => 
      array (
      ),
      'template' => 
      array (
        'pagesize' => '20',
        'mpagesize' => '20',
        'list' => 'list.html',
        'category' => 'category.html',
        'search' => 'search.html',
        'show' => 'show.html',
      ),
      'cat_field' => NULL,
      'module_field' => NULL,
      'urlrule' => 4,
      'html' => 0,
      'chtml' => 0,
    ),
    'displayorder' => '0',
    'icon' => '',
    'index' => '2',
    'mid' => 'wenku',
    'pcatpost' => 0,
    'topid' => '5',
    'catids' => 
    array (
      0 => '13',
    ),
    'is_post' => 1,
    'tid' => 1,
    'url' => 'http://www.wenhuiw.com/wenku/jtdl',
    'total' => '请使用count标签查询',
    'field' => 
    array (
    ),
  ),
  14 => 
  array (
    'id' => '14',
    'pid' => '5',
    'pids' => '0,5',
    'name' => '机械设备',
    'dirname' => 'jixie',
    'pdirname' => 'hangye/',
    'child' => 0,
    'disabled' => '0',
    'ismain' => 1,
    'childids' => 14,
    'thumb' => '',
    'show' => '1',
    'setting' => 
    array (
      'disabled' => '0',
      'linkurl' => '',
      'getchild' => '0',
      'notedit' => '0',
      'seo' => 
      array (
      ),
      'template' => 
      array (
        'pagesize' => '20',
        'mpagesize' => '20',
        'list' => 'list.html',
        'category' => 'category.html',
        'search' => 'search.html',
        'show' => 'show.html',
      ),
      'cat_field' => NULL,
      'module_field' => NULL,
      'urlrule' => 4,
      'html' => 0,
      'chtml' => 0,
    ),
    'displayorder' => '0',
    'icon' => '',
    'index' => '2',
    'mid' => 'wenku',
    'pcatpost' => 0,
    'topid' => '5',
    'catids' => 
    array (
      0 => '14',
    ),
    'is_post' => 1,
    'tid' => 1,
    'url' => 'http://www.wenhuiw.com/wenku/jixie',
    'total' => '请使用count标签查询',
    'field' => 
    array (
    ),
  ),
  15 => 
  array (
    'id' => '15',
    'pid' => '5',
    'pids' => '0,5',
    'name' => '能源动力',
    'dirname' => 'nydl',
    'pdirname' => 'hangye/',
    'child' => 0,
    'disabled' => '0',
    'ismain' => 1,
    'childids' => 15,
    'thumb' => '',
    'show' => '1',
    'setting' => 
    array (
      'disabled' => '0',
      'linkurl' => '',
      'getchild' => '0',
      'notedit' => '0',
      'seo' => 
      array (
      ),
      'template' => 
      array (
        'pagesize' => '20',
        'mpagesize' => '20',
        'list' => 'list.html',
        'category' => 'category.html',
        'search' => 'search.html',
        'show' => 'show.html',
      ),
      'cat_field' => NULL,
      'module_field' => NULL,
      'urlrule' => 4,
      'html' => 0,
      'chtml' => 0,
    ),
    'displayorder' => '0',
    'icon' => '',
    'index' => '2',
    'mid' => 'wenku',
    'pcatpost' => 0,
    'topid' => '5',
    'catids' => 
    array (
      0 => '15',
    ),
    'is_post' => 1,
    'tid' => 1,
    'url' => 'http://www.wenhuiw.com/wenku/nydl',
    'total' => '请使用count标签查询',
    'field' => 
    array (
    ),
  ),
  16 => 
  array (
    'id' => '16',
    'pid' => '5',
    'pids' => '0,5',
    'name' => '电气工控',
    'dirname' => 'dqgk',
    'pdirname' => 'hangye/',
    'child' => 0,
    'disabled' => '0',
    'ismain' => 1,
    'childids' => 16,
    'thumb' => '',
    'show' => '1',
    'setting' => 
    array (
      'disabled' => '0',
      'linkurl' => '',
      'getchild' => '0',
      'notedit' => '0',
      'seo' => 
      array (
      ),
      'template' => 
      array (
        'pagesize' => '20',
        'mpagesize' => '20',
        'list' => 'list.html',
        'category' => 'category.html',
        'search' => 'search.html',
        'show' => 'show.html',
      ),
      'cat_field' => NULL,
      'module_field' => NULL,
      'urlrule' => 4,
      'html' => 0,
      'chtml' => 0,
    ),
    'displayorder' => '0',
    'icon' => '',
    'index' => '2',
    'mid' => 'wenku',
    'pcatpost' => 0,
    'topid' => '5',
    'catids' => 
    array (
      0 => '16',
    ),
    'is_post' => 1,
    'tid' => 1,
    'url' => 'http://www.wenhuiw.com/wenku/dqgk',
    'total' => '请使用count标签查询',
    'field' => 
    array (
    ),
  ),
)

'/index.php?s=wenku&c=show&id=19180&page=[page]'

''

'http://www.wenhuiw.com/wenku/a19180.html'

array (
  's' => 'wenku',
  'c' => 'show',
  'id' => '19180',
  'm' => 'index',
)