BDL5531EL LCD
125
Repair Flow Chart
RS232 link fail
Check U28 pin20 is high?
Check signal MCU_RX and
MCU_TX is normal
Check J22 pin RX and TX
is normal ?
No
Check U28 pin19 is high?
Yes
No
Yes
No
No
Check cable or trace
Check control pin RS232_SHDN status (default
high)
1. Check control pin RS232_TXEN status
(default high)
2. Check R520 or R491 is mouted?
1. Check U28 soldering or to change a new
chip
Yes
MEMC Board Fail
Power ok ( 3.3V/1.2V/1.8V /
0.9V ? )
U3 Pin6 SPI_CKO Run?
Memory U2 CLK frequency is
correct?
Check U5 /U 10 / R143?
˨ˆʳ˙˪ʳ˻˴̆ʳ˵˸˸́ʳ˵̈̅́˸˷˒
˄ˁʳ ʳ ˨ˆʳ˙˪ʳ˻˴̆ʳ˵˸˸́ʳ˵̈̅́˸˷˒
2. U1 re-work?
Yes
Yes
Yes
No
No
No
Summary of Contents for BDL5531EL/00
Page 34: ...34 BDL5531EL LCD DDC Instructions Serial Number Definition ...
Page 43: ...BDL5531EL LCD 43 Block Diagram ...
Page 44: ...44 BDL5531EL LCD Block Diagram ...
Page 52: ...Scalar Diagram C B A 52 BDL5530EL LCD ...
Page 53: ...Scalar Diagram C B A BDL5531EL LCD 53 ...
Page 54: ...54 BDL5531EL LCD Power Diagram C B A ...
Page 55: ...BDL5531EL LCD 55 Power Diagram C B A ...
Page 56: ...56 BDL5531EL LCD Power Diagram C B A ...
Page 58: ...Control Diagram C B A 58 BDL5531EL LCD ...
Page 71: ...BDL5531EL LCD 71 General Product Specification ...
Page 73: ...BDL5531EL LCD 73 General Product Specification ...
Page 76: ...76 BDL5531EL LCD General Product Specification PICTURE MENU OVERVIEW ...
Page 77: ...BDL5531EL LCD 77 General Product Specification ...
Page 78: ...78 BDL5531EL LCD General Product Specification SCREEN MENU ...
Page 79: ...BDL5531EL LCD 79 General Product Specification ...
Page 80: ...80 BDL5531EL LCD General Product Specification AUDIO MENU ...
Page 82: ...82 BDL5531EL LCD General Product Specification CONFIGURATION 1 MENU ...
Page 83: ...BDL5531EL LCD 83 General Product Specification ...
Page 84: ...84 BDL5531EL LCD General Product Specification ...
Page 85: ...BDL5531EL LCD 85 General Product Specification CONFIGURATION 2 MENU ...
Page 86: ...86 BDL5531EL LCD General Product Specification ADVANCED OPTION MENU ...
Page 87: ...BDL5531EL LCD 87 General Product Specification ...
Page 88: ...88 BDL5531EL LCD General Product Specification ...
Page 98: ...98 BDL5531EL LCD General Product Specification ...
Page 99: ...BDL5531EL LCD 99 General Product Specification ...