Panasonic PT52LCX66 Service Manual - Page 23

SOS terminal of IC6001 Main microcontroller and IC2301 LCD Microcontroller

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PT-52LCX66 / PT-56LCX66 / PT-61LCX66 / PT-52LCX16 / PT-56LCX16 Protection Circuit SOS terminal of IC6001 (Main microcontroller) and IC2301 (LCD Microcontroller) IC6001 (MAIN MICROCONTROLLER) (Error No. 11) LAMP COVER OPEN(H) 92 16 16 93 SOS2 (Error No. 1) IC2301 (LCD MICROCONTROLLER) 108 +5V SENS (Error No. 3) 89 AC STOP(L) FAN1 LOCK(H) 29 (Error No. 2) FAN2 LOCK(H) 30 FAN3 LOCK(H) 31 CN5700 CN2502 CN6002-3 27 LAMP STATUS (Error No. 8) (Error No. 5,6) TEMPERATURE DATA1 64 IC5001 (DIGITAL VIDEO SIGNAL PROCESS) (Error No. 7) FILTER ERROR DETECTION 62 I2C SERIAL DATA 117 19 19 35 I2C SERIAL DATA +17V SENS 60 I2C SERIAL CLOCK 116 18 18 36 I2C SERIAL CLOCK +9V SENS 59 (Error No. 12) +5V SENS 4 I2C SERIAL DATA0 B22 85 I2C SERIAL DATA0 (Error No. 4) MAIN P.C.B. LCD DRIVE P.C.B. CN2501-1 CN2701-3 CN2702-3 CN2703-3 CN2301-2 1) SOS2 (over voltage/current detect) detection circuit FULL-WAVE RECTIFIER POWER FACTOR CORRECTION T1401 1 13 15 MAIN TRANS. CN1514 CN6001 7 7 (+9V) 9 9 IC1102 +5V 1 REG 2 Q1102, IC1103 Q1105 +2.5V SW 1 REG 2 IC1100 DC-DC CONVERTER POWER P.C.B. (Over voltage Detect) DT+9V DT+5V SW+2.5V SW+3.3V Q1108, Over Q1109 current Detect IC6001 (MAIN SOS MICROCONTROLLER) Q1106, Q1107 SW Normal 93 SOS2 MAIN P.C.B. 2) Fan1, Fan2 or Fan3 stopped detection circuit IC2702 +9V 2 DRIVE 4 (+7V) IC2703 2 DRIVE 4 (+8V) IC6001 (MAIN MICROCONTROLLER) I2C SERIAL DATA 117 I2C SERIAL CLOCK 116 MAIN P.C.B. IC2704 2 DRIVE 4 (+7V) IC2301 (LCD MICROCONTROLLER) +3.3V CN5700 CN2502 I2C SERIAL FAN1 LOCK(H) 29 19 18 19 18 35 DATA 36 I2C SERIAL FAN2 LOCK(H) 30 CLOCK FAN3 LOCK(H) 31 SOS LCD DRIVE P.C.B. Normal FAN1 CN2701-1 CN2701-2 CN2701-3 FAN2 CN2702-1 CN2702-2 CN2702-3 FAN3 CN2703-1 CN2703-2 CN2703-3 23

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Protection Circuit
2) Fan1, Fan2 or Fan3 stopped detection circuit
MAIN P.C.B.
LCD DRIVE P.C.B.
(Over voltage Detect)
CN5700
CN2502
19
18
19
18
LAMP STATUS (Error No. 8)
27
85
I2C SERIAL DATA0
(Error No. 4)
IC5001
(DIGITAL VIDEO SIGNAL
PROCESS)
I2C SERIAL DATA0
B22
93
SOS2
IC6001
(MAIN
MICROCONTROLLER)
POWER P.C.B.
MAIN P.C.B.
1) SOS2 (over voltage/current detect) detection circuit
Normal
SOS
Normal
SOS
DT+9V
DT+5V
SW+2.5V
SW+3.3V
IC6001
(MAIN MICROCONTROLLER)
I2C SERIAL DATA
I2C SERIAL CLOCK
I2C SERIAL
DATA
I2C SERIAL
CLOCK
117
116
IC2301
(LCD MICROCONTROLLER)
FAN1 LOCK(H)
29
35
36
FAN2 LOCK(H)
30
FAN3 LOCK(H)
31
MAIN P.C.B.
LCD DRIVE P.C.B.
SOS terminal of IC6001 (Main microcontroller) and IC2301 (LCD Microcontroller)
+5V SENS (Error No. 3)
108
+9V SENS
59
+17V SENS
60
+5V SENS
4
+9V
DRIVE
(+7V)
(+8V)
(+7V)
+3.3V
4
2
IC2704
FAN1
FAN2
FAN3
CN2701-1
CN2701-2
CN2701-3
CN2701-3
CN2702-3
CN2703-3
CN2301-2
CN2501-1
CN6002-3
CN2702-2
CN2702-3
CN2702-1
CN2703-1
CN2703-2
CN2703-3
FAN1 LOCK(H)
29
FAN2 LOCK(H)
(Error No. 2)
30
FAN3 LOCK(H)
31
DRIVE
4
2
IC2702
DRIVE
4
2
IC2703
T1401
+5V
REG
2
1
IC1102
+2.5V
REG
2
1
IC1103
DC-DC
CONVERTER
IC1100
Q1102,
Q1105
93
SOS2 (Error No. 1)
CN1514
CN6001
7
9
7
9
MAIN
TRANS.
FULL-WAVE
RECTIFIER
(+9V)
13
15
1
POWER
FACTOR
CORRECTION
AC STOP(L)
89
SW
Q1106,
Q1107
SW
Q1108,
Q1109
Over
current
Detect
CN5700
CN2502
19
18
19
18
IC6001
(MAIN MICROCONTROLLER)
I2C SERIAL DATA
I2C SERIAL CLOCK
I2C SERIAL DATA
I2C SERIAL CLOCK
117
116
IC2301
(LCD MICROCONTROLLER)
35
36
(Error No. 5,6) TEMPERATURE DATA1
64
16
16
(Error No. 11) LAMP COVER OPEN(H)
92
(Error No. 7) FILTER ERROR DETECTION
62
(Error No. 12)
PT-52LCX66 / PT-56LCX66 / PT-61LCX66 / PT-52LCX16 / PT-56LCX16
23