Panasonic PT52LCX66 - MULTI MEDIA DISPLAY Service Manual page 25

8) Abnormal Lamp detection circuit
IC6001 (MAIN MICROCONTROLLER)
ON
LAMP ON(H)
18
LAMP STATUS
27
SOS Normal
SOS: Lamp does not light up
Normal: Lamp ON
MAIN P.C.B.
9), 10) Iris Mechanism hardware error/Iris calibration error detection circuit
IC5001 IC6001
(DIGITAL SIGNAL (MAIN
PROCESS) MICROCONTROLLER)
GC4PRO I2C SERIAL
DATA
I2C SERIAL
CLOCK
I2C SERIAL I2C SERIAL
DATA DATA
B22 85
I2C SERIAL I2C SERIAL
A23 84
CLOCK CLOCK
MAIN P.C.B.
11) Lamp cover open detection circuit
IC6001 (MAIN MICROCONTROLLER)
LAMP COVER OPEN(H)
92
MAIN P.C.B.
12) Abnormal voltage (+17V, +9V, +5V lines) detection circuit
IC6001 (MAIN MICROCONTROLLER)
I2C SERIAL DATA
117
I2C SERIAL CLOCK
116
MAIN P.C.B.
OFF
Q6012 Q6011
1 1
Q6001 Q6000
3 3
117 19 19 5
116 18 18 4
LCD DRIVE
P.C.B.
SOS Normal
16 16
19 19
18 18
PT-52LCX66 / PT-56LCX66 / PT-61LCX66 / PT-52LCX16 / PT-56LCX16
LAMP ON(H)
16 16
Q1602
13 13
LAMP STATUS
(ON(H)/OFF (L))
POWER P.C.B.
IC9500,
IC9501,
IC9502
ETC
IRIS
IRIS
5
MICRO-
CONTROL
4
CONTROLLER
IRIS P.C.B.
LCD DRIVE P.C.B.
IC2301
(LCD MICROCONTROLLER)
Normal
+17V SENS
60
Normal
I2C SERIAL
DATA
35
+9V SENS
59
36 I2C SERIAL
CLOCK
Normal
+5V SENS
4
LCD DRIVE P.C.B.
25
POWER CONTROL
CIRCUIT 2
IRIS UNIT
HALL-S
P.C.B.
HALL
ELEMENT
CN9700
CN9500
CN9701
M
IRIS MOTOR
IRIS
MECHANISM
UNIT
SW2911
COVER SW
1 1
2 2
COVER SWITCH
P.C.B.
+17V
SOS
+9V
SOS
+5V
SOS