Panasonic PT-56LCX66, Service Manual, Page: 26 / 83

THERMAL FUSE
MAIN P.C.B.
CN1514 CN6001
3 3
IC6001
(MAIN MICROCONTROLLER)
AC SW ON (H)
PFC OVER
VOLTAGE
DETECT (L)
PFC
ON/OFF
SUB
RELAY
-ON/OFF
PWM1
PWM2
MAIN
RELAY
-ON/OFF
AC SW ON (H)
26
CN1401
8 8
(Over voltage)
(Over voltage)
(Over current)
(Over
current)
T1401
MAIN
TRANS.
FULL-WAVE
RECTIFIER
RELAY
13
15
1
3
POWER
FACTOR
CORRECTION
DRIVE
TRANS.
CURRENT
SENSOR
TRANS.
D1321 D1320
PR1304 R1330
PR1305
(400V)
T1302
13
15
15
FULL-WAVE
RECTIFIER
AC VOLTAGE
DETECT
POWER
FACTOR
CORRECTION
Normal
SOS
IC6002
IC1002, IC1003,
IC1405, IC1407
LOGIC
IC1933, IC1934,
IC1935
LOGIC
+17V
AMP +18V
200V(TO BALLAST)
+30V
+9V
Q1305
T1405
Q1303
Q1304
IC6006
Q1601
STBY+3.3V RESET
CN1401
AC stop detection circuit
POWER P.C.B.
POWER P.C.B.
MAIN P.C.B.
POWER
CONTROL
CIRCUIT 1
POWER
CONTROL
CIRCUIT 2
POWER
CONTROL
CIRCUIT 2
2
CN1514 CN6000
2 2 1
4
2
4
IC6001
(MAIN
MICROCONTROLLER)
AC STOP(L)
89
2
POWER
CONTROL
CIRCUIT 2
AC STOP(L)
AC STOP(H)
1
P2
11
12
10
Over voltage/current detection circuit
POWER P.C.B.
Abnormal Temperature (Thermal fuse)
(117 C/ 243 F)
CN1520-2
CN1520-1
8
7
PR1301,1302
DRIVE
2
1
IC1404, Q1807
OVER VOLTAGE DET
CN1401
20
19
6
7
19
6
7
20
11
12
10
8
7
SW
PT-52LCX66 / PT-56LCX66 / PT-61LCX66 / PT-52LCX16 / PT-56LCX16
26