-48-
Reset switch
The microprocessor inside the projector may occasionally
malfunction and does not allow any controls. In this case,
press the reset switch on the rear panel with a sharp tool to
restart the projector.
- When the WARNING TEMP indicator (red) is flashing,
the symptom indicates that the projector detected an
abnormal temperature risen inside the projector. Check the air filters and remove the object near the intake and
exhaust fan openings, and wait until the WARNING TEMP indicator flashing stops, and then try to turn on the
projector.
Temperature sensor ICs detect abnormal temperature.
Check peripheral circuits and sensor ICs IC1691 on Sensor1 Board, IC1871 and IC1872 on Main Board.
- LAMP Circuit
Abnormality on power drive signal (LAMP_SW).
LAMP_SW signal is output from pin 138 of IC801 and sent to pin 4 of K8L on Main Board through IC4891,
and to drive the Lamp Ballast Unit.
LAMP_SW ..................................High in power on
The lamp does not light
LAMP_DET signal (Error: H) is sent from the lamp ballast board and input to pin 111 of IC801, and the
CPU turns off the projector. The cooling fans rotate at full speed for cooling down period and then the pro-
jector goes to stand-by mode.
IC1871
IC1691
IC1872
SW902
F601
SW905
The Locations of Protectors and sensors
Troubleshooting
Содержание MP-45
Страница 60: ...60 IC Block Diagrams BH3540 Volume Control IC1652 BA7078AF Sync Detector IC5304...
Страница 61: ...61 CXA2151Q RGB Matrix IC4101 CXA7004R LCD Driver IC501 IC531 IC561 IC1501 IC1531 IC1561 IC Block Diagrams...
Страница 62: ...62 CXD3531R Digital Signal Driver Timing Generator IC401 ICS1523M Clock Driver IC4231 IC Block Diagrams...
Страница 64: ...64 IC Block Diagrams LB1641 Motor Drive IC1602 IC1611 LB1645 Motor Drive IC1601...
Страница 66: ...66 M62393 D A IC212 M62399 D A IC7801 IC Block Diagrams ML60851 USB Interface IC9801...
Страница 68: ...68 IC Block Diagrams STR Z2156 Power Switching IC651 Sii169CT DVI Interface supporting HDCP IC8001...
Страница 69: ...69 IC Block Diagrams TB1274AF Video Decoder IC3101 TA1370FG Sync Separator Frequency Counter IC7301...
Страница 70: ...70 TDA7056 Audio Output IC1631 IC1632 TC90A69F 3 Line Digital Comb Filter IC2101 IC Block Diagrams...
Страница 108: ...MR3 MP 45t00 Mechanical Parts List 108 68 45 23 24 45 45 45 68 a 68 b 23 b 23 a 23 c 24 a 23 d...
Страница 110: ...MR3 MP 45t00 110 Optical Parts List 47 55 46 46 69 b Red 69 c Green 69 d Blue 69 47 47 47 69 a 69 e G B Red no use...
Страница 116: ...Diagrams Drawings MR3 MP 45t00...