-42-
7
to assy board
125
122
24
IC801 CPU
IC5801 I/O Expander
IC809 I/O Expander
FRONT INDICATORS
ON/OFF SWITCH TOP CONTROL
119
144
AC INPUT
26
27
Switching power
supply
Q5601 Q5603 Q5606
FAN
RED
LED
GREEN
LED
RED
LED
PO
WER LED
READ
Y LED
W
A
R
N
ING TEMP.
LED
12
10
KEY2
Power fail
Lamp monitor
Temp. monitor
Power ON/OFF switch
Fan drive
Lamp ON/OFF switch
IC681 12V DC-DC
Converter
17V
15V
5V
F901
FUSE
SW901
MAIN SW
Is fuse (F901) blown?
Check that the POW-
ER FAIL signal is
correct.
pin125 of IC801
L : abnormal
Check that the TEMP.
MONITOR signal is cor-
rect. pin24 of IC809
and pin3 of K8E
L : abnormal
Check that the LAMP
MONITOR signal is cor-
rect. pin122 of IC801
and pin16 of K8A
H : abnormal
Is POWER ON sig-
nal in lamp power
on/off button input at
Pin119 of IC801 ?
Check that the FAN DRIVE
signal is correct.
pin27 of IC5801
Check that the LAMP ON/OFF
signal is correct. pin144 of
IC801 H : ON
Are LAMP POWER indicator(red) and READY indica-
tor(green) light? (Front indicators)
If the LAMP POWER and READY indicators do not light,
check the HOT circuit of primary side and S5V of
STANDBY power source circuit.
Check that the POWER
ON/OFF signal is correct.
pin26 of IC5801 H : ON
Check the signal at
Pin5 of T631.
SW902
INTERLOCK
SW
POWER FAIL
7
to assy board
125
122
24
23
IC801 CPU
IC5801 I/O Expander
IC809 I/O Expander
FRONT INDICATORS
ON/OFF SWITCH TOP CONTROL
119
144
AC INPUT
26
27
Switching power
supply
Q5601 Q5603 Q5606
FAN
RED
LED
GREEN
LED
RED
LED
PO
WER LED
READ
Y LED
W
A
R
N
ING TEMP.
LED
12
10
KEY2
Power fail
Lamp monitor
Temp. monitor
Temp Det.
Power ON/OFF switch
Fan drive
Lamp ON/OFF switch
IC6601
12V DC-DC
Converter
17V
15V
5V
F901
FUSE
SW901
MAIN SW
Is fuse (F901) blown?
Check that the POW-
ER FAIL signal is
correct.
pin125 of IC801
L : abnormal
Check that the TEMP.
MONITOR signal is cor-
rect. pin24 of IC809
and pin3 of K8E
L : abnormal
Check that the LAMP
MONITOR signal is cor-
rect. pin122 of IC801
and pin16 of K8A
H : abnormal
Is POWER ON sig-
nal in lamp power
on/off button input at
Pin119 of IC801 ?
Check that the FAN DRIVE
signal is correct.
pin27 of IC5801
Check that the LAMP ON/OFF
signal is correct. pin144 of
IC801 H : ON
Are LAMP POWER indicator(red) and READY indica-
tor(green) light? (Front indicators)
If the LAMP POWER and READY indicators do not light,
check the HOT circuit of primary side and S5V of
STANDBY power source circuit.
Check that the POWER
ON/OFF signal is correct.
pin26 of IC5801 H : ON
Check the signal at
Pin5 of T631.
SW902
INTERLOCK
SW
FAN
IC7601, IC7602,
IC7603 DC-DC Conv.
POWER
FAIL
POWER
FAIL
NO POWER
Refer to next page
■
Troubleshooting
Summary of Contents for PLC-EF12B
Page 55: ... 55 IC Block Diagrams AV9155C OSC IC3301 IC3321 CIP3250A Component Interface Processor IC102 ...
Page 58: ... 58 IC Block Diagrams ML60851ATB USB Controller IC3801 MPC948FA Clock Driver IC3341 ...
Page 59: ... 59 IC Block Diagrams M62358FP DAC IC1401 VPC3215C Digital Video Processor IC101 ...
Page 60: ... 60 IC Block Diagrams MB40988PFQ D A Converter IC1181 MSM54V16258 DRAM IC2301 IC2311 ...
Page 61: ... 61 IC Block Diagrams CXA2016S Sync Separator IC4141 TC4052BF Sync Separator IC4141 ...
Page 66: ... 66 TDA8395T SECAM Decoder IC6103 IC Block Diagrams ...
Page 111: ...M6V EF12N00 NL00 PLC EF12E 00 EL 00 PLC EF12B 00 111 ...
Page 112: ... M6VAC Feb 2001 2000 SI Printed in Japan SANYO Electric Co Ltd ...