卡件 1790D-0V16
維修技巧之
維修經(jīng)驗(yàn)總結(jié)
一.帶程序的芯片
1.EPROM芯片一般不宜損壞.因這種芯片需要紫外光才能擦除掉程序,
故在測試中不會損壞程序.但有資料介紹:因制作芯片的材料所致,隨著
時(shí)間的推移(年頭長了),即便不用也有可能損壞(主要指程序).所以要
盡可能給以備份.
2.EEPROM,SPROM等以及帶電池的RAM芯片,均極易破壞程序.這類芯片
是否在使用<測試儀>進(jìn)行VI曲線掃描后,是否就破壞了程序,還未有定
論.盡管如此,同仁們在遇到這種情況時(shí),還是小心為妙.筆者曾經(jīng)做過
多次試驗(yàn),可能大的原因是:檢修工具(如測試儀,電烙鐵等)的外殼漏電
所致.
3.對于電路板上帶有電池的芯片不要輕易將其從板上拆下來.
二.復(fù)位電路
1.待修電路板上有大規(guī)模集成電路時(shí),應(yīng)注意復(fù)位問題.
2.在測試前裝回設(shè)備上,反復(fù)開,關(guān)機(jī)器試一試.以及多按幾次復(fù)
位鍵.
卡件 1790D-0V16
| 1790-0B16X |
| 1790-0V16X |
| 1790-0W8X |
| 1790-15CMCBL |
| 1790-16BV0X |
| 1790-7CMCBL |
| 1790-8BV8BX |
| 1790-8BV8VX |
| 1790-T0A8X |
| 1790-T0B16X |
| 1790-T0V16X |
| 1790-T0W8X |
| 1790-T16BV0X |
| 1790-T8A0X |
| 1790-T8BV8BX |
| 1790-T8BV8VX |
| 1790D-0B16 |
| 1790D-0V16 |
| 1790D-0W6 |
| 1790D-16BV0 |
| 1790D-8BV8B |
| 1790D-8BV8V |
| 1790D-N0C2 |
| 1790D-N4C0 |
| 1790D-T0A6 |
| 1790D-T0B16 |
| 1790D-T0B32 |
| 1790D-T0V16 |
| 1790D-T0V32 |
| 1790D-T0W6 |
| 1790D-T16BV0 |
| 1790D-T16BV16B |
| 1790D-T16BV16V |
| 1790D-T32BV0 |
| 1790D-T4R0 |
| 1790D-T4T0 |
| 1790D-T8A0 |
| 1790D-T8BV8B |
| 1790D-T8BV8V |
| 1790D-TN0C2 |
| 1790D-TN0V2 |
| 1790D-TN4C0 |
| 1790D-TN4V0 |
| 1791DS-IB12 |
| 1791DS-IB16 |
| 1791DS-IB4XOW4 |
| 1791DS-IB8XOB8 |
| 1791DS-IB8XOBV4 |
| 1791ES-IB16 |
| 1791ES-IB8XOBV4 |
| 1791ES-ID2SSIR |
| 1794-ACN15 |
| 1794-ACNR15 |
| 1794-ACNR15XT |
| 1794-ADN |
| 1794-ADNK |
| 1794-AENT |
| 1794-AENTR |
| 1794-AENTRXT |
| 1794-CE1 |
| 1794-CE3 |
| 1794-CJC2 |
| 1794-IA16 |
| 1794-IA8 |
| 1794-IA8I |
| 1794-IB10XOB6 |
| 1794-IB10XOB6XT |
| 1794-IB16 |
| 1794-IB16D |
| 1794-IB16XOB16P |
| 1794-IB16XT |
| 6SN1130-1AD11-0BA0 |
| 6SN1130-1DA11-0AA0 |
| 6SN1130-1DA11-0DA0 |
| 6SN1130-1DA11-0EA0 |
| 6SN1130-1DA11-0FA0 |
| 6SN1130-1DA11-0HA0 |
| 6SN1130-1DA12-0AA0 |
| 6SN1130-1DA12-0BA0 |
| 6SN1130-1DA12-0CA0 |
| 6SN1130-1DA12-0DA0 |
| 6SN1130-1DA12-0HA0 |
| 6SN1130-1DA13-0AA0 |
| 6SN1130-1DA13-0BA0 |
| 6SN1130-1DA13-0CA0 |
| 6SN1130-1DA13-0DA0 |
| 6SN1130-1DA13-0EA0 |
| 6SN1130-1DG12-0HA0 |
| 6SN1130-1DG13-0AA0 |
| 6SN1130-1DG13-0BA0 |
| 6SN1130-1DG13-0CA0 |
| 6SN1130-1DG13-0EA0 |
| 6SN1130-1DG13-0FA0 |
| 6SN1130-1DG13-0GA0 |
| 6SN1130-1DG13-0HA0 |
| 6SN1135-1BA11-0CA0 |
| 6SN1135-1BA11-0DA0 |
| 6SN1135-1BA11-0EA0 |
| 6SN1135-1BA11-0FA0 |
| 6SN1135-1BA11-0GA0 |
| 6SN1135-1BA12-0CA0 |
| 6SN1135-1BA12-0DA0 |
| 6SN1135-1BA12-0EA0 |
| 6SN1135-1BA12-0FA0 |
| 6SN1140-1BA11-0CA0 |
| 6SN1140-1BA11-0DA0 |
| 6SN1140-1BA11-0EA0 |
| 6SN1140-1BA12-0BA0 |
| 6SN1140-1BA12-0CA0 |
| 6SN1140-1BA12-0DA0 |
| 6SN1140-1BA12-0EA0 |
| 6SN1140-1BA12-0FA0 |
| 6SN1140-1BA12-0GA0 |
| 6SN1145-1AA00-0AA0 |
| 6SN1145-1AA00-0CA0 |
| 6SN1145-1AA01-0AA0 |
| 6SN1145-1AA01-0AA1 |
| 6SN1145-1AB00-0CA0 |
| 6SN1145-1BA00-0BA0 |
| 6SN1153-1JX20-0AB0 |
| 6SN1153-1JX20-0AB3 |
| 6SN1153-1JX20-0BB0 |
| 6SN1153-1JX20-0DB0 |
| 6SN1153-2AX10-3AB0 |
| 6SN1153-2AX10-3AB1 |
| 6SN1153-2AX10-3AB3 |
| 6SN1153-2JX20-0AB0 |
| 6SN1153-2JX20-0AB3 |
| 6SN1153-3AX10-0AB0 |
| 6SN1153-3AX10-0AB3 |
| 6SN1153-3JX20-0AB0 |
| 6SN1153-3JX20-0AB3 |
| 6SN1153-3JX20-1AB0 |
| 6SN1153-3JX20-1AB3 |
| 6SN1153-8AX10-1AB0 |
| 6SN1161-0BA01-0AA0 |
| 6SN1161-0BA02-0AA0 |
| 6SN1161-0BA03-0AA0 |
| 6SN1161-0BA04-0AA0 |
| 6SN1161-0BA05-0AA0 |
| 6SN1161-1AA01-0BA0 |
| 6SN1161-1CA00-0AA0 |
| 6SN1161-1CA00-0BA0 |
| 6SN1161-1CA00-0CA0 |
| 6SN1161-1CA00-0DA0 |
