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海信牌大屏幕OM8373系列彩色电视接收机维_图文

海信牌大屏幕 OM8373 系列彩色电视接收机维修手册
包含如下机型:TF2919CF、TF2967CF、TF2566CH、TF2568CH、TF2511HF、 包含如下机型 : TF2919CF 、 TF2967CF 、TF2566CH 、 TF2568CH 、TF2511HF 、 TC2577DH。 TC2577DH。

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一、

产品介绍 ·········································································································································3
产品外观介绍 ·······································································································································3 产品功能规格、 产品功能规格、特点介绍 ···················································································································3 产品差异介绍 ·······································································································································3

(一) (二) (三)

(1)各个机型之间的差异 ················································································································································ 3 (2)派生机差异说明 ························································································································································ 4

二、 三、

方案概述 ·········································································································································5 原理说明 ·········································································································································5

(一)电源部分 ······················································································································································6

四、机芯调试 ············································································································································· 11 五、故障现象及原因分析 ·························································································································15 六、附:相关图片 ·····································································································································16

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一、产品介绍
(一) 产品外观介绍
OM8373 系列产品涵盖外观系列比较多,11 系列、19 系列、66 系列、67 系列、68 系列、77 系 列等,颜色以银白套黑、银白套亚光黑为主,时尚大方。请见六附相关图片。

(二) 产品功能规格、特点介绍
本系列机型采用了飞利浦最新推出的 N3 版本超大规模集成电路 OM8373/TDA9373,该系列超大规模集成电路 将微处理器和主信号处理芯片合二为一,称为超级单片(简称为 UOC) 。该芯片具有功能先进、外围元器件少、 工艺调整简单等特点,可以进一步降低成本、提高性能。在大屏幕 OM8373 系列机芯上派生开发的新品包含如下 在大屏幕 机型:TF2919CF、TF2967CF、TF2566CH、TF2568CH、TF2511HF、TC2577DH。 机型:TF2919CF、TF2967CF、TF2566CH、TF2568CH、TF2511HF、TC2577DH。 本系列机型主要具有以下功能特点: 2 全 I C 总线控制,整机无调整点(+B 电源调整除外) 多制式及 470MHZ CATV 频段接收,彩色、200 频道节目存储 超黑涂层、高精度聚焦显像管 可选中/英文双语言屏幕显示、黑背景控制、动态屏幕保护功能 全自动选台,手动选台,自动频率微调 各种黑电平延伸、自动白峰限制电路、暗平衡自动调整电路等画质提高电路 定时开/关机、频道拷贝、频道交换功能,自动转换频道、无信号自动关机功能。 具有完善的密码锁定、限时收看、预设编程收看功能。 内置日历、游戏等多种附加功能 具备视频 S 输入端子、YUV 输入端子、一路 AV 输入、一路侧 AV 输入、一路 AV 输出 2 由于采用了全 I C 总线控制功能,各种功能的组合直接通过模块来实现,微处理器自动进行识别,提高了 企业自我开发的自由度,又极大的方便了用户使用。

(三) 产品差异介绍 (1)各个机型之间的差异 )
OM8373 系列机型较多,尺寸涵盖 25、29、34 寸等以及超薄 29、32 寸。到目前为止(2006 年 5 月) ,OM8373 系列已开发完成的机型有 TF2506D、 TF2507F、 TC2507F、 TC2502DL, 现正在开发机型 TF2566CH、 TF2568CH、 TF2511HF、 TC2577DH、TF2919CF、TF2967CF。其中后 2 种机型是 29 寸机型,在 25 寸机型进行升级开发,主板增加地磁校正 电路。这些机型一共采用了四个版本的程序,说明如下: 软件版本-3NA/-3N B/-3N C:25 寸机型现在生产使用软件版本为-3NC 版本,该软件版本主芯片可 以取代原-3NA、-3NB 软件版本主芯片,但注意母块相一致。 版本版本-12AG:29 寸机型因需要增加地磁校正功能,菜单中增加地磁校正项,相应工厂数据进行优
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化,软件版本采用-12AG 版本,与 25 寸不一样,后续根据 29 寸机型开发成熟后,将考虑主芯片进行 掩膜,同时考虑 29 寸与 25 寸机型软件版本兼容,通过母块数据来满足 25 寸与 29 寸机型不同要求。 具体机型情况说明如下: 机型 TF2919CF TF2967CF TF2566CH TF2568CH TF2511HF TC2577DH TF2506D TF2507F TC2507F TC2502DL 主芯片 OM8373 OM8373 OM8373 OM8373 OM8373 OM8373 OM8373/TDA9373 OM8373/TDA9373 OM8373/TDA9373 OM8373/TDA9373 硬件版本 N3 N3 N3 N3 N3 N3 N2 或 N3 N2 或 N3 N2 或 N3 N2 或 N3 软件版本 -12AG -12AG -3NC -3NC -3NC -3NC -3NA 或 3NB 或 3NC -3NA 或 3NB 或 3NC -3NA 或 3NB 或 3NC -3NA 或 3NB 或 3NC 地磁校正 增加 增加 无 无 无 无 无 无 无 无 备注 正在开发 正在开发 正在开发 正在开发 正在开发 正在开发 已批量 已批量 已批量 已批量

替换问题: 版主芯片都可以直接代替- 而不需要更改母块数据,但是代用- 版时, 替换问题:A. -3NC 版主芯片都可以直接代替-3NB 版,而不需要更改母块数据,但是代用-3NA 版时,请更换 对应- 版程序的母块数据,对应的母块不能混用,否则会出错; 对应-3NC 版程序的母块数据,对应的母块不能混用,否则会出错; 寸机型, 寸机型,否则数据可能乱。 B. -12AG 只使用在 29 寸机型,不能使用到 25 寸机型,否则数据可能乱。 寸软件进行兼容,将另通知说明; C. 后续考虑 25 寸与 29 寸软件进行兼容,将另通知说明;

(2)派生机差异说明
1、TF2919CF/TF2967CF:都在 25 寸机芯基础上升级开发而成,跟 25 寸机型主要区别增加地磁校正功能,都采用 TF2919CF/TF2967CF 了三星 A68QCP693X001 显像管,行包采用 BSC29-0128H,采用外观不一样。 2、TF2566CH 等:主要采用不同机壳、显象管区别见下表: 机型 TF2566CH TF2566CH(1) TF2568CH TF2568CH(1) TF2511HF TC2577DH TC2577DH(1) 机壳 66 系列新外观 66 系列新外观 68 系列新外观 68 系列新外观 11 系列旧外观 77 系列旧外观 77 系列旧外观 显象管 A59QDF891X002(A) A59MAU095×90 A59QDF891X002(A) A59QDC280×55 A59MAU095×90 64SX505Y22-DC02 A59EEJ04×60 行包 JF0501-21907 JF0501JF0501-21907 JF0501-21921 备注

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