MAIN P.C.B.
REAR JACK P.C.B.
[LAMP Indicator eight blinks] LAMP Fan stops detection circuit
[LAMP Indicator nine blinks] OPT Fan stops detection circuit
[LAMP Indicator ten blinks] Front Fan or Rear Fan stops detection circuit
[LAMP Indicator eleven blinks] Rear Fan or Front Fan stops detection circuit
[LAMP Indicator twelve blinks] Rear Jack P.C.B. connection error detection circuit
CN3001
CN3501
29
29
IC6004
(TV MICROCONTROLLER)
FAN SOS
LAMP FAN SOS
OPT FAN SOS
FRONT FAN SOS
REAR FAN SOS
NORMAL
REAR JACK P.C.B.
CONNECTION ERROR
FRONT/REAR FAN SD CONTROL
<FROM TV MICROCONTROLLER (IC6004)>
OPT FAN SD CONTROL
<FROM TV MICROCONTROLLER (IC6004)>
:APPROX. 0V
:APPROX. 0.5V
:APPROX. 1.3V
:APPROX. 2V
:APPROX. 2.8V
:APPROX. 3.3V
117
+9V
+9V
FRONT
FAN
CN2751-1
CN2751-2
CN2751-3
REAR
FAN
CN2752-1
CN2752-2
CN2752-3
OPT
FAN
CN2754-1
CN2754-2
CN2754-3
IC2751
DRIVE
(+8 V)
(+6.0V~ +6.5 V)
(+7 V)
4
5
2
IC2753
DRIVE
4
2
IC2754
DRIVE
4
2
LAMP
FAN
CN2753-1
CN2753-2
CN2753-3
Q2754
Q2753
Q2752
Q2751
5
PT-56LCX70 / PT-61LCX70 / PT-50LCX7 / PT-56LCX7 / PT-61LCX7
16