Panasonic PT52LCX66 Service Manual - Page 26

MAIN P.C.B., AC stop detection circuit, POWER P.C.B., Over voltage/current detection circuit, - ballast

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

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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