Sharp Lc 32le340m Maintenance Manual
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![Page 26
LC-32LE240M/340M(1stEdition)
5 – 1
LC32LE240M4FSWJDF.BOVBMCHAPTER 5. TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE
No power (front LED failure to light up) or no startup (front LED failure to turn from red to green)
Are the wire harnesses and other cables properly connected in
the set?NO Reconnect the wire harnesses and other cables properly in the
set.
YES
Is there the AC_CTRL and PNL_POWER signal input at pins
(126) and (127) of IC3301?NO Check the AC_CTRL signal line PNL_POWER signal line.
YES...](http://img.usermanuals.tech/thumb/68/104504/w64_lc-32le340m-maintenance-manual-1523963941_d-25.png "Page 26
LC-32LE240M/340M(1stEdition)
5 – 1
LC32LE240M4FSWJDF.BOVBMCHAPTER 5. TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE
No power (front LED failure to light up) or no startup (front LED failure to turn from red to green)
Are the wire harnesses and other cables properly connected in
the set?NO Reconnect the wire harnesses and other cables properly in the
set.
YES
Is there the AC_CTRL and PNL_POWER signal input at pins
(126) and (127) of IC3301?NO Check the AC_CTRL signal line PNL_POWER signal line.
YES...")
![Page 27
LC-32LE240M/340M(1stEdition)
5 – 2
With [RF] signal input No video onscreen (1)
No video in the UHF/VHF reception
Is there IF output from the tuner pin(10) of TU1101 as specified? NO Check TU1101 and its peripheral circuits.
YES
Is there VIF input at pin 74 & 75 of IC3301? NO Check the circuit between TU1101 & IC3301.
YES
Are there the signal outputs (pin 100-107, 109,110) of IC3301? NO Check IC3301 and its peripheral circuit.
YES
Check...](http://img.usermanuals.tech/thumb/68/104504/w64_lc-32le340m-maintenance-manual-1523963941_d-26.png "Page 27
LC-32LE240M/340M(1stEdition)
5 – 2
With [RF] signal input No video onscreen (1)
No video in the UHF/VHF reception
Is there IF output from the tuner pin(10) of TU1101 as specified? NO Check TU1101 and its peripheral circuits.
YES
Is there VIF input at pin 74 & 75 of IC3301? NO Check the circuit between TU1101 & IC3301.
YES
Are there the signal outputs (pin 100-107, 109,110) of IC3301? NO Check IC3301 and its peripheral circuit.
YES
Check...")
![Page 35
LC-32LE240M/340M(1stEdition)
6 – 1
LC32LE240M
4FSWJDF.BOVBM
CHAPTER 6.
OVERALL WIRING/BLOCK DIAGRAM
[1] OVERALL WIRING DIAGRAMA C
B DEF GI
H
12345678910111213141516171819
20
21 22
QCNW-M466WJQZ
QCNW-M465WJQZ
SP-R
[L1][PD]
[AC]1-41 10
NL
Power Unit
RUNTKA929WJQZ
SP-L
1
32
12
QCNW-M467WJQZ
QCNW-M468WJQZ
Hiraki-Panel
R1LK315T3HB00W
MAIN
32LE340M --> DUNTKF998FMG4
32LE240M --> DUNTKF998FMG5
LED PWB A
RUNTKA927WJZZ
LED PWB B
RUNTKA928WJZZ
SP-R
RSP-ZA571WJZZSP-L
RSP-ZA570WJZZ
Tuner
PC audio inUSB
HP...](http://img.usermanuals.tech/thumb/68/104504/w64_lc-32le340m-maintenance-manual-1523963941_d-34.png "Page 35
LC-32LE240M/340M(1stEdition)
6 – 1
LC32LE240M
4FSWJDF.BOVBM
CHAPTER 6.
OVERALL WIRING/BLOCK DIAGRAM
[1] OVERALL WIRING DIAGRAMA C
B DEF GI
H
12345678910111213141516171819
20
21 22
QCNW-M466WJQZ
QCNW-M465WJQZ
SP-R
[L1][PD]
[AC]1-41 10
NL
Power Unit
RUNTKA929WJQZ
SP-L
1
32
12
QCNW-M467WJQZ
QCNW-M468WJQZ
Hiraki-Panel
R1LK315T3HB00W
MAIN
32LE340M --> DUNTKF998FMG4
32LE240M --> DUNTKF998FMG5
LED PWB A
RUNTKA927WJZZ
LED PWB B
RUNTKA928WJZZ
SP-R
RSP-ZA571WJZZSP-L
RSP-ZA570WJZZ
Tuner
PC audio inUSB
HP...")
![Page 36
LC-32LE240M/340M(1stEdition)
6 – 2
[2] SYSTEM BLOCK DIAGRAMA C
B DEF GI
H
12345678910111213141516171819
20
21 22
MST6100VS RH-IXD454WJQZQ (340M)
MST6003VS RH-IXD459WJQZQ (240M)
MSTAR
SAR(2)
Monitor Audio
SAR(0)
SAR(1)
GPIO10
CVBS
COMPAUDIO
LED UNITL1
LED1_A
LED1_K
2pin
L1
LED1_A
LED1_K
LED2_A
LED2_K
4pin
UR+12.2V
GND
PS_ON
ERROR
OFL
STB
UR+12.2V
GND
PS_ON
ERROR
OFL
STB
USB IF
PD
PD
HDMI1
HDMI
IR IN
GPIO6
GPIO37
KEY/RC/LEDKEY/SW
IR Receiver
LED
TEMPSENSORTH3301
SIF IN
VIF INTUNER
TUNER
TU1101...](http://img.usermanuals.tech/thumb/68/104504/w64_lc-32le340m-maintenance-manual-1523963941_d-35.png "Page 36
LC-32LE240M/340M(1stEdition)
6 – 2
[2] SYSTEM BLOCK DIAGRAMA C
B DEF GI
H
12345678910111213141516171819
20
21 22
MST6100VS RH-IXD454WJQZQ (340M)
MST6003VS RH-IXD459WJQZQ (240M)
MSTAR
SAR(2)
Monitor Audio
SAR(0)
SAR(1)
GPIO10
CVBS
COMPAUDIO
LED UNITL1
LED1_A
LED1_K
2pin
L1
LED1_A
LED1_K
LED2_A
LED2_K
4pin
UR+12.2V
GND
PS_ON
ERROR
OFL
STB
UR+12.2V
GND
PS_ON
ERROR
OFL
STB
USB IF
PD
PD
HDMI1
HDMI
IR IN
GPIO6
GPIO37
KEY/RC/LEDKEY/SW
IR Receiver
LED
TEMPSENSORTH3301
SIF IN
VIF INTUNER
TUNER
TU1101...")
LC-32LE240M/340M(1stEdition)
5 – 6
No audio heard (3)
No HDMI sound heard.
(*INPUT 1 is digital audio.)
Does the HDMI image appear onscreen? NO Refer to “ in No external input video onscreen
(HDMI)”.
YES
No audio output from NO Check it if EDID is written or not.
YES
Are waveforms input in to the pin(3)-(6), (8), (9), (11), (12)
of IC3301 normally?NO Check peripheral circuits IC3301.
YES
Is there audio signal input at pin(6) of IC1701? NOCheck connection between IC3301 and IC1701 and its periph-
eral circuits.
YES
Is the L-ch audio signal output at pin(28), (30) of IC1701 normal? NO Check IC1701 and its peripheral circuits.
Is the R-ch audio signal output at pin(12), (14) of IC1701 normal?
YES
Are the audio signal L-ch and R-ch output at (3)/(4) and (1)/(2) of
P1701 normal?NO Check circuit between IC1701 & P1701.
YES
Check speakers and their peripheral circuits.
LC-32LE240M/340M(1stEdition)
5 – 7
No audio heard (4)
No sound from the HDMI sound input terminal.
(INPUT 1 analog audio)
YES
Is there the L-ch audio signal input from pin (2) of external input
terminal J506 (HDMI AUDIO IN) to pin (55) of IC3301?
Is there the R-ch audio signal input from pin (3) of external input
terminal J506 (HDMI AUDIO IN) to pin (56) of IC3301?
YES
Are I2S signal output from the pins (80), (81) of IC3301 normally? NO Check peripheral circuits of IC3301.
YES
Is there audio signal input at pin(6) of IC1701? NO Check connection between IC3301 and IC1701 and its periph-
eral circuits.
YES
Is the L-ch audio signal output at pin(28), (30) of IC1701 normal? NO Check IC1701 and its peripheral circuits.
Is the R-ch audio signal output at pin(12), (14) of IC1701 normal?
YES
Are the audio signal L-ch and R-ch output at (3)/(4) and (1)/(2) of
P1701 normal?NO Check circuit between IC1701 & P1701.
YES
Check speakers and their peripheral circuits.
LC-32LE240M/340M(1stEdition)
5 – 8
No audio heard (5)
No PC audio output
YES
Pin (2) of J506: Is L-ch input into the pin (55) of IC3301?
Pin (3) of J506: Is R-ch input into the pin (56) of IC3301?
YES
Are I2S signal output from the pins (80), (81) of IC3301 normally? NO Check peripheral circuits of IC3301.
YES
Is there audio signal input at pin(6) of IC1701? NO Check connection between IC3301 and IC1701 and its
peripheral circuits.
YES
Is the L-ch audio signal output at pin(28), (30) of IC1701 normal? NO Check IC1701 and its peripheral circuits.
Is the R-ch audio signal output at pin(12), (14) of IC1701 normal?
YES
Are the audio signal L-ch and R-ch output at (3)/(4) and (1)/(2) of
P1701 normal?NO Check circuit between IC1701 & P1701.
YES
Check speakers and their peripheral circuits.
LC-32LE240M/340M(1stEdition) 6 – 1 LC32LE240M 4FSWJDF.BOVBM CHAPTER 6. OVERALL WIRING/BLOCK DIAGRAM [1] OVERALL WIRING DIAGRAMA C B DEF GI H 12345678910111213141516171819 20 21 22 QCNW-M466WJQZ QCNW-M465WJQZ SP-R [L1][PD] [AC]1-41 10 NL Power Unit RUNTKA929WJQZ SP-L 1 32 12 QCNW-M467WJQZ QCNW-M468WJQZ Hiraki-Panel R1LK315T3HB00W MAIN 32LE340M --> DUNTKF998FMG4 32LE240M --> DUNTKF998FMG5 LED PWB A RUNTKA927WJZZ LED PWB B RUNTKA928WJZZ SP-R RSP-ZA571WJZZSP-L RSP-ZA570WJZZ Tuner PC audio inUSB HP HDMID-Sub [SP] [PD] [LW] 32 - 1 1 4 1 10 12
LC-32LE240M/340M(1stEdition) 6 – 2 [2] SYSTEM BLOCK DIAGRAMA C B DEF GI H 12345678910111213141516171819 20 21 22 MST6100VS RH-IXD454WJQZQ (340M) MST6003VS RH-IXD459WJQZQ (240M) MSTAR SAR(2) Monitor Audio SAR(0) SAR(1) GPIO10 CVBS COMPAUDIO LED UNITL1 LED1_A LED1_K 2pin L1 LED1_A LED1_K LED2_A LED2_K 4pin UR+12.2V GND PS_ON ERROR OFL STB UR+12.2V GND PS_ON ERROR OFL STB USB IF PD PD HDMI1 HDMI IR IN GPIO6 GPIO37 KEY/RC/LEDKEY/SW IR Receiver LED TEMPSENSORTH3301 SIF IN VIF INTUNER TUNER TU1101 RTUNQA067WJQZ I2C LED_G,R RC KEY1/2 PSW_IN IFIF AMP VIF SAW Filter SIF AMP Filter VIF+ VIF-SIF+ SIF- HDMI1 CEC HDMI1HDMII SC1501 QSOCZA271WJQZ Y EDID IC1501 HPD0 IN D5V I2Cclk data Panel Hiraki 32" WXGA Terminal PC DDC PC RGB PC D-sub 15pin SC502 HD VD PC Audio J506 L/R EEPROM IC508 VHIBR24T02J SDA SCL L/R CVBS & Audio L/RY/Pb/Pr CVBS/COMP IN J502COMP Audio IN J502USB IN J501(side) DP/DN Mon Amp circuit Mon L/R OUT J502 HPAudio out HP Amp circuit HP J504(side) HP Det RESET IC3302H/W RESET DRAM IFDDR2 (128Mb) IC3501 RH-IXD361WJQZQ AUDIOOUTAUDIO AMP IC1701 VHIYDA164DZ-1Y SP MUTEI2S SP P1701 QPLGNA961WJZZY 4 LCH(+) 3 LCH(-) 2 RCH(-) 1RCH (+) SP_L SP_RSP_L SP_R85W 85W SPI IFSPI FLASH IC3101 RH-IXD464WJQZQ (LE340M) SPI MAIN UNIT LED UNITL1 LED1_A LED1_K 2pin IF_SW SPI_WP ERROR OFL INV_POW PANEL_12V LVDS 8bit Data A 8 ClkA2 TCON_WP I2C XIN/XOUT I2C I2C IC3801 I2C SW P2601 30 pin I2C Xtal (24.0MHz) X3301 I2C Address A8 EEPROM(HDCP) IC3103 RH-IXD110WJQZY I2C Address A4 EEPROM(DRAM) IC3102 VHIBR24T28F-1Y POWER UNIT Data A 8 Clk A 2 RH-IXD463WJQZQ (LE240M) SP_LSP_R
LC-32LE240M/340M(1stEdition) 7 – 1 LC32LE240M 4FSWJDF.BOVBM CHAPTER 7. PRINTED WIRING BOARD ASSEMBLIES [1] MAIN UnitA C B DEF GI H 12345678910111213141516171819 20 21 22 MAIN Unit (Side-A)
LC-32LE240M/340M(1stEdition) 7 – 2 A C B DEF GI H 12345678910111213141516171819 20 21 22 MAIN Unit (Side-A Chip)
LC-32LE240M/340M(1stEdition) 7 – 3 A C B DEF GI H 12345678910111213141516171819 20 21 22 MAIN Unit (Side-B)
LC-32LE240M/340M(1stEdition) 7 – 4 A C B DEF GI H 12345678910111213141516171819 20 21 22 MAIN Unit (Side-B Chip)