DOWNLOAD Sharp LC-32SA1E (serv.man2) Service Manual ↓ Size: 39.39 MB | Pages: 127 in PDF or view online for FREE

Model
LC-32SA1E (serv.man2)
Pages
127
Size
39.39 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
lc-32sa1e-sm2.pdf
Date
PREV: Sharp LC-32SA1E Service Manual / Specification

Sharp LC-32SA1E (serv.man2) Service Manual ▷ View online

LC-26SA1E/RU, LC-32SA1E/RU
6 – 4
No sound from external input devices (2)
                                             
No sound from an external input device connected to EXT3.
                                             
<EXT3>
Is IN3-L audio signal sent from pin (3) of J1201 terminal to pin 
(16) of IC3002? 
Is IN3-R audio signal sent from pin (5) of J1201 terminal to pin 
(15) of IC3002? 
NO
Check pins (3) (J1201) and (5) (J1201) of EXT3 and connection 
to an external input device. 
YES
Is the audio signal properly sent from pins (28) and (27) of 
IC3002?
NO
Check IC3002 or peripheral circuits.
YES
Is the audio signal of pins (1) and (7) of IC303 (OP-AMP) sent 
properly?
NO
Check IC303 or peripheral circuits.
YES
Is the audio output signal of pins (13) and (16) of IC302/IC301 
(MAIN-AMP) normal?
NO
Check IC302/IC301 (MAIN-AMP), HEADPHONE and peripheral 
circuits.
YES
Check CONNECTOR (P301) and Speaker (right and left).
No sound from external input devices (2)
                                             
No sound from EXT4 (AUDIO) connecting an external input 
device.
                                             
<EXT4>
Is D-SUB-L audio signal sent from J2702 to pin (15) of IC2704? 
Is D-SUB-R audio signal sent from J2702 to pin (2) of IC2704?
YES
Is D-SUB-L audio signal sent to pin (10) of IC3002? 
Is D-SUB-R audio signal sent to pin (9) of IC3002?
YES
Is the audio signal properly sent from pins (28) and (27) of 
IC3002?
NO
Check IC3002 or peripheral circuits.
YES
Is the audio signal of pins (1) and (7) of IC303 (OP-AMP) sent 
properly?
NO
Check IC303 or peripheral circuits.
YES
Is the audio output signal of pins (13) and (16) of IC302/IC301 
(MAIN-AMP) normal?
NO
Check IC302/IC301 (MAIN-AMP), HEADPHONE and peripheral 
circuits.
YES
Check CONNECTOR (P301) and Speaker (right and left).
     LC-26SA1E/RU, LC-32SA1E/RU
6 – 5
No sound from external input devices (2)
                                             
No sound from EXT5 (AUDIO) connecting an external input 
device.
                                             
<EXT5>
Is HDMI-L audio signal sent from J2701 to pin (14) of IC2704?
Is HDMI-R audio signal sent from J2701 to pin (5) of IC2704? 
YES
Is HDMI-L audio signal sent to pin (10) of IC3002? 
Is HDMI-R audio signal sent to pin (9) of IC3002?
NO
Check output of pins (13) and (3) of IC2704 and peripheral 
circuits. 
YES
Check that Option-HDMI Setup-Audio select is set to “Analog”.
                                            
OK
Is the audio signal properly sent from pins (28) and (27) of 
IC3002?
NO
Check IC3002 or peripheral circuits.
YES
Is the audio signal of pins (1) and (7) of IC303 (OP-AMP) sent 
properly?
NO
Check IC303 or peripheral circuits.
YES
Is the audio output signal of pins (13) and (16) of IC302/IC301 
(MAIN-AMP) normal?
NO
Check IC302/IC301 (MAIN-AMP), HEADPHONE and peripheral 
circuits.
YES
Check CONNECTOR (P301) and Speaker (right and left).
No sound except from speakers (3)
                                             
No audio output from the headphones.
                                             
Is there audio output on pins (2) and (3) of the headphone 
terminal (J1301)?
NO
Is audio input/output signal of pins (3) and (5)/(1) and (7) of IC303 
(OP-AMP) normal? 
NO
Is audio output signal (SPK-OUT L/R) properly sent from pins 
(28) and (27) of IC3002 (VCT)?
NO
Check audio input signal of pin (31) of IC3002 (VCT), pins (18) 
and (33) of the power line, pins (84) and (83) of I2C-LINE, and 
peripheral circuits.
LC-26SA1E/RU, LC-32SA1E/RU
6 – 6
No sound except from speakers (3)
                                            
No audio output from EXT1 (SCART) terminal.
                                            
Checklist: 
1) Is the MUTE button on the remote control set to ON? 
••• Set to OFF.
2) Check the connection to external devices. 
••• Is there any improper connection?
                                            
Is audio signal sent to pins (3) and (1) of EXT1 (J1101)?
YES
Check the connection to EXT1 (J1101) and external devices.
                                            
NO
Is S-MUTE-LINE [IC1710 (pin 100)] at H?
(Check Q1106/Q1105 operation.) 
                                            
NO
Is audio signal sent from pins (24) and (23) of IC3002? 
NO
Check the power supply 8/5 V pins (18) and (33) of IC3002 and 
peripheral circuits.
YES
Check the audio signal output line from pins (24) and (23) of 
IC3002 to pins (3) and (1) of EXT1.
No sound except from speakers (3)
                                            
No audio output from EXT2 (SCART) terminal.
                                            
Checklist: 
1) Is the MUTE button on the remote control set to ON? 
••• Set to OFF.
2) Check the connection to external devices. 
••• Is there any improper connection?
                                            
Is audio signal sent to pins (24) and (22) of EXT2 (J1101)?
YES
Check the connection to EXT2 (J1101) and external devices.
                                            
NO
Is S-MUTE-LINE [IC1710 (pin 100)] or S2-MUTE-LINE [IC3003 
(pin 26)] at H? (Check Q1102/Q1101 operation.)
                                            
NO
Is audio signal sent from pins (22) and (21) of IC3002?
NO
Check the power supply 8/5 V pins (18) and (33) of IC3002 and 
peripheral circuits.
YES
Check the audio signal output line from pins (22) and (21) of 
IC3002 to Q1103/Q1104/Q1201/Q1202.
     LC-26SA1E/RU, LC-32SA1E/RU
6 – 7
No sound except from speakers (3)
                                            
No audio output from AUDIO OUTPUT terminal.
                                            
Checklist: 
1) Is the MUTE button on the remote control set to ON? 
••• Set to OFF.
2) Check the connection to external devices. 
••• Is there any improper connection?
                                            
Is audio signal sent to pins (13) and (15) [L/R (white) (red)] of 
AUDIO OUTPUT terminal (J1201)?
YES
Check the connection to AUDIO OUTPUT terminal (J1201) and 
external devices.
                                            
NO
Is S-MUTE-LINE [IC1710 (pin 100)] at H?
(Check Q1204/Q1203 operation.) 
                                            
NO
Is audio signal sent from pins (22) and (21) of IC3002?
NO
Check the power supply 8/5 V pins (18) and (33) of IC3002 and 
peripheral circuits.
YES
Check the audio signal output line from pins (22) and (21) of 
IC3002 to Q1103/Q1104/Q1201/Q1202.
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