DOWNLOAD Sharp LC-32D44E (serv.man5) Service Manual ↓ Size: 1.07 MB | Pages: 19 in PDF or view online for FREE

Model
LC-32D44E (serv.man5)
Pages
19
Size
1.07 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / Trouble Shooting Table
File
lc-32d44e-sm5.pdf
Date

Sharp LC-32D44E (serv.man5) Service Manual ▷ View online

LC-32D44E/S/RU-BK/GY
4 – 13
<When EXT3 is used for external input> No picture on the display (8)
Does not the picture of the Y/C video signal input to EXT3 go out?
Is Y/C signal input into pin(14), (12) of connector 
SC1001 from pin(3)/Y, (4)/C of J1001?
NO
Check the line between J1001 and SC1001.
YES
Is Y/C signal output from pin(14)/Y,(12)/C of connector 
P1001 ?
NO
Check the connector SC1001/P1001.
YES
Is the Y/C video signal detection function SV1JSW sig-
nal from pin (6) of the input terminal J1001 normal? 
NO
Check J1001 or peripheral circuits.
YES
Is the SV1JSW signal input to pin(2) of IC1001 
(VIDEO_SELECTOR) and pin(27) of IC2302 
(SUB_MICON)?
NO
Check the between SV1JSW_LINE J1001 and IC1001/IC2302. (Con-
nector SC1001/P1001, etc.)
YES
Is Y/C signal sent to pins (184), (183) of 
IC3001(MAIN_MICON)?
NO
Check the line between P1001 and IC3001.
(IC1001, EXT_DTV_LINE etc.)
YES
Refer to “The picture doesn't appear in all modes.”
<When EXT4 is used for external input> No picture on the display (9)
Does not the picture of the DVI(ANALOG) video signal input to EXT4(15pin-D-SUB terminal) go out?
YES
Are the video signal and the synchronized signal input 
from pin(1, 2, 3)/(R, G, B), (13 and 14)/(V, H) of input 
terminal D-SUB (SC1201)? 
NO
Check the connection and setup with the external DVI devices.
YES
Is EDID data pin (6)/SCL, pin(5)/SDA of IC1201 
(EEPROM)  accessed, and is it read from pin (15),(12) 
of a DVI terminal(SC1201)?
NO
Is access possible in the re-writing or exchange of EDID data of 
IC1201? 
YES
NO
Check the circumference circuit of SC1201, IC1201.
Are the video signal and the synchronized signal input 
from pin(174, 173, 172)/(R, G, B), pin(171, 47)/(H, V) of 
IC3001(MAIN_MICON)? 
NO
Check the line between SC1201 and IC3001.
(IC1941,etc)
YES
Refer to “The picture doesn't appear in all modes.”
LC-32D44E/S/RU-BK/GY
4 – 14
<When EXT5 is used for external input> No picture on the display (10)
Does not the picture of the component video signal input to EXT5 go out?
Is COMPONENT video signal input into pin(3)/Y, (5)/Pb, 
(7)/Pr of the input terminal J1401?
NO
Check the connection of J1401 and the external input device.
YES
Is COMPONENT video signal input into pin(1)/Y, (6)/Pb, 
(9)/Pr of  IC1401(VIDEO_BUFFER)?
NO
Check the line between J1401 and IC1401.
YES
Is COMPONENT signal output into pin(180), (179), 
(181) of IC3001(MAIN_MICON) from pin(20)/Y, (18)/PB, 
(16)/PR of  IC1401?
NO
Check the line between IC1401 and IC3001.
YES
Refer to “The picture doesn't appear in all modes”
LC-32D44E/S/RU-BK/GY
4 – 15
<When EXT6/7 is used for external input> No picture on the display (11)
Does not the picture of the HDMI signal input to EXT6/7 go out?
EXT6
EXT6
Is the HDMI detection function output from pin (19) of 
the HDMI terminal (SC1901) normal? 
Check between SC1901and IC3001(MAIN_MICON) of pin(205). 
(Q1905, etc.)
NO
EXT7
EXT7
Is the HDMI detection function output from pin (19) of 
the HDMI terminal (SC1921) normal? 
Check between SC1921 and IC3001(MAIN_MICON) of pin(203). 
(Q1925, etc.)
 YES
Check the connection and setup with the external HDMI devices.
EXT6
NO
Is access possible in the re-writing or exchange of EDID data of 
IC1902? 
Is EDID data pin (6)/SCL, pin(5)/SDA of 
IC1902(EEPROM)  accessed, and is it read from pin 
(15),(16) of a HDMI terminal(SC1901)?
 NO
Check the circumference circuit of SC1901, IC1902 and 
IC1951(HDMI_RECEIVER).
EXT7
Is EDID data pin (6)/SCL, pin(5)/SDA of 
IC1922(EEPROM)  accessed, and is it read from pin 
(15),(16) of a HDMI terminal(SC1921)?
NO
Is access possible in the re-writing or exchange of EDID data of 
IC1922? 
 NO
Check the circumference circuit of SC1921, IC1922 and 
IC1951(HDMI_RECEIVER).
 YES
EXT6
Is TMDS signal input into pin(59,58)/TMDS2_CLKP/N, 
(63,62)/TMDS2_D0P/N, (67,66)/TMDS2_D1P/N, 
(71,70)/TMDS2_D2P/N of IC1951 from SC1901?
NO
Check the line between SC1901 and IC1951.
EXT7
Is TMDS signal input into pin(40,39)/TMDS1_CLKP/N, 
(44,43)/TMDS1_D0P/N, (48,47)/TMDS1_D1P/N, 
(52,51)/TMDS1_D2P/N of  IC1951 from SC1921?
NO
Check the line between SC1921 and IC1951.
 YES
Is each signal output from DINR[0:7], DING[0:7], 
DINB[0:7],  pin(2,3)/HDMI_H/V, (1)/DINEN, (121)/
DINCK, of  IC1951?
NO
Is the control signal of IC1951 and IC3001 (MAIN_MICON) normal?  
(HDMI_RST, IC1941, etc.)
YES
Is each signal of DINR[0:7], DING[0:7], DINB[0:7],  pin(171,47)/HDMI_H/V, (48)/DINEN, (49)/DINCK of IC3001(MAIN_MICON) input?
 YES
NO
Refer to “The picture doesn't appear in all modes.”
Check the line between IC1951 and IC3001.
(IC1941, etc.)
LC-32D44E/S/RU-BK/GY
4 – 16
<During external connection> No picture on the monitor (1)
SCART1:
No picture appears on EXT1 - connected monitor during the tuner (U/V) reception.
Checklist:
1) Is the Signal Type (item) in MENU-Option-Input Select equal to Signal Type of an external device?... Set it to ”CVBS”, ”Y/C” or “RGB”.
2) Is ANT-CABLE disconnected or connected improperly? ... Connect it correctly as per the operation manual.
3) The picture is sent to the monitor in a CVBS signal if the source during display is TV, CVBS or Y/C of EXT1-3. 
    When sent by component, etc., that signal is not sent to the monitor.
4) When the monitor picture is not sent and is not displayed on the monitor, refer to “No picture” for each terminal.
5) The video output from EXT1 is not the monitor output (output of the picture now watching).
    The picture of the last selected TV channel is always sent to EXT1. (Specification)
Is CVBS signal output into pin(19) of SC1102(SCART1) 
from pin(2) of IC1102(SW)?
YES
Check the setting of an external input device that connects of SC1102.
NO
Is CVBS signal output from PIN(195) of 
IC3001(MAIN_MICON) to PIN(6) of IC1102?
YES
Check the line between IC1102 and SC1102.
NO
Is video signal (CVBS) sent to pin (195) of IC3001?
YES
Check power supply of IC3001 and peripheral circuits.
NO
Is VIN1 signal output from pin(6) of TUNRE(TU201)?
YES
Check the line between TU201 and IC3001.
NO
Check whether I2C is normally accessed between 
TU201 and IC3001. 
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