Sanyo PLC-SW30 Service Manual

-37-
Troubleshooting
● No Picture
No picture with all of
input sources
Check signal processing stage and LCD driving stage;
Check RGB S&H signals at test points TPR1, TPG1, TPB1.
Check NRS signals at test points TP2531 and TP2561.
Check power supply circuit 15VP and peripheral circuit.
Check ICs IC501, IC531, IC561, IC3531, IC401, IC9401, IC301 and
peripheral circuit.
No picture with Computer
RGB input source
Check PC source selecting stage;
Check IC5201 and peripheral circuit on the AV board.
RGB signals are selected at RIN1/GIN1/BIN1 of IC5201 and sent to
IC8201, A/D converter IC.
Check RGB signals at test points TP6202R/G/B.
H/V sync signal is output from IC5201 and sent to IC301 through
IC5301 and IC5303.
GSYNC signal of the source without H/V sync signals is output from
IC5201, and sent to IC5301 and IC5302, then sync separated signals
are sent to IC301 through IC5303.
PC/AV_SW signal is applied on IC5303, output from pin 14 of IC3551
for selecting sync signals.
Check H/V_SYNC signal at test points TPGHS/TPGVS.
No picture with Computer
RGB(Scart) input source
Ye s
Ye s
Ye s
No
No
No
Check following steps.
Check AV source selecting stage;
Check composite video signal (Video) on the AV and Main board.
Check IC101, Video decoder, and peripheral circuit.
No picture with video
input source
Ye s
Check PC source selecting stage;
RGB(Scart) signals are sent to IC101, Video decoder IC.
Check RGB signals at pin 3, 2 and 1 of IC101.
CV_SCART signal for sync is sent to pin 72 of IC101.
Check CV_SCART signal and test points TPVHS/TPVVS.
Check AV source selecting stage;
Check S-video signal (Y/C) on the AV and Main board.
Check IC101, Video decoder, and peripheral circuit.
S_SW signal (S-Video cable is connected:L) is applied on pin 9 of
IC1811.
No picture with S-VIDEO
input source
Check AV/PC source selecting stage;
Check component signal (Y/Cr,Pr/Cb,Pb) on the AV and Main board.
Component signals (480i/575i format) are sent to IC101 directly.
Component signals (480p/575p format) are selected at
RIN2/GIN2/BIN2 of IC5201 and other HDTV format signals are select-
ed at RIN1/GIN1/BIN1 of IC5201, and then sent to IC8201.
Check IC5201, IC8201, IC101 and peripheral circuit.
Sync signals of 480i/575i format signal are output from IC101.
Sync signals of other format signals are output from IC5302.
Check H/V_sync signal at test points TPGHS/TPGVS/TPVHS/TPVVS.
No picture with
Component input source
No
Ye s
Ye s
No

Sanyo PLC-SW30 Specifications

General

Native aspect ratio	4:3
Projection distance	- m
Vertical scan range	50 - 100 Hz
Horizontal scan range	15 - 80 kHz
Projection technology	3LCD
Contrast ratio (typical)	300:1
Screen size compatibility	34 - 200 \
Projector native resolution	SVGA (800x600)
Keystone correction, horizontal	20 °
Lamp type	UHP
Lamp power	150 W
Light source type	Lamp
Service life of light source	2000 h
Service life of light source (economic mode)	2500 h
RMS rated power	0.8 W
Number of built-in speakers	1
Power source	AC
AC input voltage	100 - 240 V
Power consumption (standby)	- W
Power consumption (typical)	244 W
Power consumption (PowerSave)	169 W
Focus	Manual
Throw ratio	1.6 - 1.9:1
Focal length range	- mm
Aperture range (F-F)	1.6 - 1.8
HDCP	-
Noise level	- dB
Dot clock scanning frequency	100 MHz
Full HD	No
Analog signal format system	NTSC, NTSC 4.43, PAL, PAL M, PAL N, SECAM
Supported graphics resolutions	800 x 600 (SVGA)
USB connector type	USB Type-B
HDMI ports quantity	0
Serial interface type	RS-232
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Placement	Desktop
Product type	Standard throw projector
Product color	Black, White
Cables included	AC, VGA
Remote control type	IR

Weight and Dimensions

Depth	190 mm
Width	270 mm
Height	78 mm
Weight	2100 g