DS90UB928Q-Q1: 串行器DS90UB941AS-Q1搭配解串器DS90UB928Q-Q1，屏无法输出图像

1.屏背光正常，屏自动进入自检模式

2.屏开机后928的pass和lock 信号检测为低电平
(function(id)
{
var v = document.getElementById(id);var op = v.style.position, ol = v.style.left, or = v.style.right, fe = [];
var nodeLimit = 50;
checkVideo = function() {
if (!v.canPlayType || v.error) {
var bound = 0;
while (v.childNodes.length > 0 && bound < nodeLimit) {
bound++;
if (v.childNodes[0].nodeName != 'SOURCE') {
v.parentNode.insertBefore(v.childNodes[0], v);
}
}
v.parentNode.removeChild(v);
} else if (v.readyState == 0) {
window.setTimeout(checkVideo, 249);
}
},
checkVideoRendered = function() {
if (v.networkState == 1 && v.readyState == 4) {
v.style.position = op;
v.style.left = ol;
v.style.right = or;
for (var i = 0; i < fe.length; i++) {
fe[i].parentNode.removeChild(fe[i]);
}
} else {
window.setTimeout(checkVideoRendered, 249);
}
}
if (navigator.userAgent.indexOf('iPad') == -1 && navigator.userAgent.indexOf('iPhone') == -1 && navigator.userAgent.indexOf('iPod') == -1) {
window.setTimeout(checkVideo, 249);
}
})('v_2001ca292e7d4111a5944edffc32096d');

(function(id)
{
var v = document.getElementById(id);var op = v.style.position, ol = v.style.left, or = v.style.right, fe = [];
var nodeLimit = 50;
checkVideo = function() {
if (!v.canPlayType || v.error) {
var bound = 0;
while (v.childNodes.length > 0 && bound < nodeLimit) {
bound++;
if (v.childNodes[0].nodeName != 'SOURCE') {
v.parentNode.insertBefore(v.childNodes[0], v);
}
}
v.parentNode.removeChild(v);
} else if (v.readyState == 0) {
window.setTimeout(checkVideo, 249);
}
},
checkVideoRendered = function() {
if (v.networkState == 1 && v.readyState == 4) {
v.style.position = op;
v.style.left = ol;
v.style.right = or;
for (var i = 0; i < fe.length; i++) {
fe[i].parentNode.removeChild(fe[i]);
}
} else {
window.setTimeout(checkVideoRendered, 249);
}
}
if (navigator.userAgent.indexOf('iPad') == -1 && navigator.userAgent.indexOf('iPhone') == -1 && navigator.userAgent.indexOf('iPod') == -1) {
window.setTimeout(checkVideo, 249);
}
})('v_a274a1053cac4437b8e505761cf056fd');

Kailyn Chen：

您好，您使用的是内部pattern mode发现没有输出是吗？

建议先按照datasheet中的步骤做一下BIST自检测试，参考8.3.9 Built In Self Test (BIST)部分。

读取下BIST error寄存器0x25。