-36-
To each boards
50
27
IC1901 SUB CPU
INDICATORS
ON/OFF BUTTON
47
26
AC INPUT
FAN
KEY2
POWER FAIL
LAMP DET.
29
LAMP SW.
54
LAMP BST_SW.
34
5V_SW.
44
FAN DRIVE
31
READY
30
WARNING
32
LAMP REPLACE
TEMP DET.
12V
15V
5V
F901
FUSE
SW902
THERMAL SW.
Is fuse (F901) blown?
SW904
INTER LOCK
SW.
POWER FAIL
LAMP
READY
TEMP
WARNING
LAMP
REPLACE
Check that the LAMP indicator and READY indicator
are lighting.
If both of indicators are not lighting, check the primary
side of the power supply circuit or S5V of standby power
supply circuit.
Switching power
supply
Check signal at pin 5
of T651
IC66A, Q671, Q681
IC67A, IC68A, IC69A
When power on/off
button is pressed, the
input voltage at pin 47
comes High.
Check that the
POWER FAIL signal
at pin 50 is correct.
L : abnormal
Check that the FAN DRIVE
signal at pin 44 is correct.
H : Power ON
Check that the 5V_SW signal
at pin 34 is correct.
H : Power ON
Check that the
LAMP DET. signal at
pin 27 is correct.
H : abnormal
Check that the
TEMP DET. signal at
pin 26 is correct.
L : abnormal
Check that the LAMP_SW
signal at pin 29 is correct.
H : Power On
H: ON
L: ABNORMAL
L: ABNORMAL
H:ON
H:ON
H:ON
H: ABNORMAL
NO POWER
Refer to next page
■
Troubleshooting
Содержание PLC-SU20B
Страница 45: ... 45 TPDVS V SYNC TPDHS H SYNC TP3571 NRS ...
Страница 49: ... 49 IC Block Diagrams CXA2111R LCD Driver IC401 CXA2112R Sample Hold IC501 IC531 IC561 ...
Страница 50: ... 50 IC Block Diagrams CXD3503R White Uniformity Compensation IC471 FA5331M Power Factor Control IC01 ...
Страница 51: ... 51 IC Block Diagrams IDT71V016S RAM IC805 LA7217M Sync Separator IC6131 ...
Страница 52: ... 52 IC Block Diagrams LB1641 Motor Drive IC5501 IC5551 LC4105V Buffer IC3501 IC3521 IC3541 ...
Страница 53: ... 53 IC Block Diagrams M62358FP DAC IC431 MB40988PFQ D A COnverter IC2200 ...
Страница 54: ... 54 IC Block Diagrams MC14538BF IC7201 MPC948FA Clock Driver IC1302 ...
Страница 55: ... 55 IC Block Diagrams PW264 System Control Scan Converter IC301 STR Z2156 Power SWitching Control IC631 ...
Страница 58: ... 58 TDA9178T Picture Improvement IC121 IC Block Diagrams ...
Страница 81: ...Ref No Part No Description Ref No Part No Description 81 Electrical Parts List ...
Страница 84: ...Mechanical Parts List 84 CHASSIS PARTS 24 45 24 72 73 71 57 45 45 45 46 46 46 46 51 51 51 ...
Страница 85: ... 85 Mechanical Parts List 32 59 33 58 25 34 28 60 27 45 45 45 45 45 45 ...
Страница 88: ...Feb 2000 1300 SI Printed in Japan SANYO Electric Co Ltd ...