Sharp LC-40SH340K Service Manual

77
LC-40SH340E
LC-40SH340K
26.7. No Sound Problem
Problem: No audio at main TV speaker outputs.
Check supply voltages of VDD_AUDIO, 5V_VCC and 3V3_VCC with a voltage-meter.
There may be a problem in headphone connector or headphone detect circuit (when headphone is
connected, speakers are automatically muted). Measure voltage at HP_DETECT pin, it should be 3.3v.
26.8. No Sound Problem at Headphone
Problem: No audio at headphone output.
Check HP detect pin, when headphone is. Check 5V_VCC and 3V3_VCC with a voltage-meter.
26.9. Standby On/Off Problem
Problem: Device cannot boot, TV hangs in standby mode.
There may be a problem about power supply. Check 12V_VCC, 5V_VCC and 3V3_VCC with a voltage-
meter. Also there may be a problem about SW. Try to update TV with latest SW. Additionally it is good to
check SW printouts via hyper-terminal (or Teraterm). These printouts may give a clue about the problem.
25.7
26.8
26.9

Sharp LC-40SH340K Specifications

General

Teletext function	Yes
DVI port	No
HDMI version	1.3
SCART ports quantity	1
Product color	Black
Mercury content	60 mg
Panel mounting interface	400 x 400 mm
Display diagonal	40 \
Display technology	LCD
Display diagonal (metric)	102 cm
Annual energy consumption	177 kWh
Audio decoders	Dolby Digital, Dolby Virtual Speaker
RMS rated power	12 W
Power consumption (standby)	0.5 W
Analog signal format system	NTSC, PAL, SECAM
Digital signal format system	DVB-T

Weight and Dimensions

Depth (with stand)	323 mm
Width (with stand)	970 mm
Height (with stand)	657 mm
Weight (with stand)	18300 g
Depth (without stand)	91 mm
Height (without stand)	613 mm