Panasonic PT52LCX66 - MULTI MEDIA DISPLAY Service Manual page 23

Protection Circuit
SOS terminal of IC6001 (Main microcontroller) and IC2301 (LCD Microcontroller)
IC6001 (MAIN MICROCONTROLLER)
(Error No. 11) LAMP COVER OPEN(H)
SOS2 (Error No. 1)
93
+5V SENS (Error No. 3)
108
AC STOP(L)
89
LAMP STATUS (Error No. 8)
CN6002-3
27
IC5001
(DIGITAL VIDEO SIGNAL
PROCESS)
I2C SERIAL DATA0
B22
MAIN P.C.B.
1) SOS2 (over voltage/current detect) detection circuit
T1401
POWER
FULL-WAVE
1
FACTOR
RECTIFIER
CORRECTION
POWER P.C.B.
2) Fan1, Fan2 or Fan3 stopped detection circuit
IC6001 (MAIN MICROCONTROLLER)
I2C SERIAL DATA
117
I2C SERIAL CLOCK
116
MAIN P.C.B.
92 16
I2C SERIAL DATA
117 19
I2C SERIAL CLOCK
116 18
I2C SERIAL DATA0
85
(Error No. 4)
7 7 (+9V)
13
9 9
15
MAIN
TRANS.
Q1102,
Q1105
SW
(Over voltage Detect)
19 19
18 18
16
IC2301 (LCD MICROCONTROLLER)
(Error No. 2)
(Error No. 5,6) TEMPERATURE DATA1
(Error No. 7) FILTER ERROR DETECTION
I2C SERIAL DATA
19 35
I2C SERIAL CLOCK
18 36
(Error No. 12)
LCD DRIVE P.C.B.
IC1102
+5V
1 2
REG
IC1103
+2.5V
1 2
REG
IC1100
DC-DC
CONVERTER
Q1108, Over
Q1109
current
Detect
MAIN P.C.B.
IC2702
(+7V)
+9V 2 4
DRIVE
IC2703
(+8V)
2 DRIVE 4
IC2704
(+7V)
2 4
DRIVE
IC2301 (LCD MICROCONTROLLER)
I2C SERIAL FAN1 LOCK(H)
29
35 DATA
FAN2 LOCK(H)
30
36 I2C SERIAL
CLOCK FAN3 LOCK(H)
31
LCD DRIVE P.C.B.
23
PT-52LCX66 / PT-56LCX66 / PT-61LCX66 / PT-52LCX16 / PT-56LCX16
CN2501-1
FAN1 LOCK(H)
CN2701-3
29
FAN2 LOCK(H)
CN2702-3
30
FAN3 LOCK(H)
CN2703-3
31
CN2301-2
64
62
+17V SENS
60
+9V SENS
59
+5V SENS
4
DT+9V
DT+5V
SW+2.5V
SW+3.3V
IC6001
(MAIN
MICROCONTROLLER)
SOS
Q1106,
Normal
Q1107
SOS2
SW 93
FAN1
CN2701-1
CN2701-2
CN2701-3
FAN2
CN2702-1
CN2702-2
CN2702-3
FAN3
CN2703-1
CN2703-2
+3.3V CN2703-3
SOS
Normal