Panasonic PT-52LCX66-K, Service Manual, Page: 140 / 223

PT-52LCX66/PT-56LCX66/PT-61LCX66/PT-52LCX16/PT-56LCX16/PT-52LCX66-K/PT-56LCX16-K/PT-61LCX66-K
I/O CHART OF POWER CONTROL 2 P.C.B. (CN1401 ON POWER P.C.B.)
Pin No. I/O Description WF No.
WF8
WF7
WF6
Signal Name
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
1
2
3
4
5
6
7
8
9
10
11
12
17
18
13
14
15
16
O
I
-
-
O
O
O
I
I
I
-
-
O
-
I
I
O
O
O
I
I
I
-
-
-
-
-
I
I
-
O
O
-
O
O
-
-
-
-
I
O
I
(Not used)
(Not used)
(Not used)
(Not used)
(Not used)
VB FOR PWM CONTROL OF POWER CONTROL CIRCUIT 2
PWM CONTROL FOR LAMP POWER
VS FOR PWM CONTROL OF POWER CONTROL CIRCUIT 2
AC STOP(IN)
IC1301 ON
SUB RELAY
MAIN RELAY
ATSC ON H
-12V
+12V
ON SIGNAL
HIGH VOLTAGE UNIT ON
AC-DC ON
PFC ON/OFF
PFC CONDITION
LAMP ON DET H
AMP 18V
R1703-
R1703+
ON SIGNAL
REGULATER GND
REGULATER GND
REGULATER GND
-----
-----
-----
-----
-----
REGB
REGB
TO L1502
TO L1502
TO L1501
TO L1501
TO D1530
TO R1404
STBY B
R1409-R1408 GND
R1409-R1408 GND
R1409-R1408 GND
VOLTAGE ADJUST 1
VOLTAGE ADJUST 2
AC STOP(OUT) AC STOP (L)
AC STOP DETECT (H)
+7.5V CONTROL 1
+7.5V CONTROL 2
POWER CONTROL CIRCUIT 1 ON (H)
SUB RELAY (RL1902) ON (H)
MAIN RELAY (RL1903) ON (H)
AC SW (POWER SW) ON (H)
STBY+12V FOR POWER CONTROL CIRCUIT 2
-12V FOR POWER CONTROL CIRCUIT 2
GND
GND
LAMP STATUS (OFF (L)/ON (H))
GND
+12V
LAMP ON (H)
IGNITER ON (H)
POWER CONTROL CIRCUIT 1 ON (H)
PFC CIRCUIT ON (H)
OVER VOLTAGE DETECT (L) FOR PFC CIRCUIT
LAMP ON DETECT (H)
AMP+18V FOR POWER CONTROL CIRCUIT 2
WATTAGE CONTROL
WATTAGE CONTROL
GND
GND
GND
GND
+B (APPROX. +200V) FOR BALLAST CIRCUIT
+B (APPROX. +200V) FOR BALLAST CIRCUIT
INVERTER PULSE 1
INVERTER PULSE 1
INVERTER PULSE 2
INVERTER PULSE 2
EARTH GND
T1501 DETAIL BLOCK DIAGRAM
2
1
3 4
Low
High
To Lamp
T1501 DETAIL BLOCK DIAGRAM
I/O CHART OF POWER CONTROL 2 P.C.B. (CN1401 ON POWER P.C.B.)
PT-52LCX66-K / PT-56LCX16-K / PT-61LCX66-K
140