Sharp Aquos LC-26A37M, Service Manual

Page: 27 / 92

LC-26/32A37M
6 – 4
Is the LVDS signal output from IC3001(MAIN_MICON)?
LVDS0_P/N(140/141), LVDS1_P/N(137/138),
NO
Check IC3001 and its peripheral control circuits.
LVDS2_P/N(134/135), LVDS3_P/N(128/129),
LVDS4_P/N(125/126), LVDS_CP/CN(131/132)
YES
Is the LVDS signal input to IC8103(LCD_CONTROL)?
NO
Check the line between IC3001 (MAIN_MICON)
A0+/-(165/164), A1+/-(167/166), A2+/-(169/168), and IC8103
A3+/-(189/188), A4+/-(191/190), ACK+/-(187/186)
YES
Is the control signal of LCD controller normal?
NO
Check the control signal R/L_LINE, U/D_OUT_LINE
FRAME_LINE, BANK_SEL_LINE, TEMP1/2/3_LINE
QS_EN_LINE, etc.
YES
Is VCC_3.3V, VCC_2.5V or VCC_1.5V supplied
NO
Check if IC8402(MULTI_CHANNEL_SYSTEM
to IC8103? _POWER_SUPPLY) and the peripheral
power supply circuit are normal.
YES
Are the video signals BR/BG/BB (0_P/M-3_PM), FR/
NO
Check IC8103 and its peripheral circuits.
FG/FB(0_P/M-3_M/P) and the CLK signals (BCLK_P/
M, FCLK_P/M) output from IC8103?
YES
Are BR/BG/BB(0_P/M-3_P/M), BCLK(P/M) input to
NO
Check the line between IC8103 and CN8201/CN8202
connector SC8201 and FR/FG/FB(0_P/M-03_P/M),
FCLK(P/M) input to connector SC8202?
YES
Are the gradiation signals (VH/VL_247, 191, 159, 63,
NO
Check IC8201 and the communication between its
31, 0) normal sent from IC8201( GLAY_LEVEL peripheral circuits and IC8103 is normal.
_GENERATION) to CN8201/CN8202? (Each line of DAC_CLK/DATA/LATCH)
YES
Check the connectors CN8201/CN8202 and LCD Panel
No picture on the display (1)
The picture doesn't appear in all modes.