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3) Abnormal voltage (+9V line) detection circuit
IC1102 (MAIN MICROCONTROLLER)
+9V SENS
MAIN C.B.A. (CIRCUIT BOARD DG)
4) Abnormal Voltage (+3.3V line) for Main C.B.A. (Circuit Board DG) detection circuit
IC1102 (MAIN MICROCONTROLLER)
+3.3V SENS
MAIN C.B.A. (CIRCUIT BOARD DG)
5) IC4265 (GC4U) communication Error detection circuit
IC4258
(MAIN VIDEO SIGNAL PROCESS)
I2C SERIAL CLOCK2
I2C SERIAL DATA2
IC4257
(SUB VIDEO SIGNAL PROCESS)
I2C SERIAL CLOCK2
I2C SERIAL DATA2
IC4265
(VIDEO SIGNAL PROCESS)
I2C SERIAL CLOCK2
I2C SERIAL DATA2
6) Abnormal Color Wheel rotation detection circuit
3V
IC1102
(MAIN MICROCONTROLLER)
Normal
CW DET
110
SOS: Abnormal rotation
(NTSC: less than 60Hz or more than 360Hz)
MAIN C.B.A. (CIRCUIT BOARD DG)
Normal
SOS
108
SOS: 0V on DT+9V line
Normal
SOS
63
SOS: 0V on +3.3V line
25
26
65
64
A3
A4
MAIN C.B.A. (CIRCUIT BOARD DG)
180Hz (NTSC)
150Hz (PAL/SECAM)
IC4200
SOS
CPLD
40
5
16
DT+9V
21
+3.3V
25
26
acknowledge
IC6004
IC6011
(DMD CONTROL)
(MOTOR DRIVE)
AC2
IC6006
(BUFFER)
CW INDEX
14
6
16
16
4
DMD DRIVE C.B.A.
(CIRCUIT BOARD L)
IC2803
+9V
21
2
REG
BASE C.B.A. (CIRCUIT BOARD A)
IC2804
+3.3V
25
2
REG
26
BASE C.B.A. (CIRCUIT BOARD A)
IC1102 (MAIN MICROCONTROLLER)
I2C SERIAL CLOCK2
84
I2C SERIAL DATA2
85
SOS: No acknowledge reply
COLOR WHEEL UNIT
V-REF
IC6903
(COMPARATOR)
1
3
3
4
3
COLOR WHEEL C.B.A.
(CIRCUIT BOARD CW)
+12V
1
1
+12V
COLOR WHEEL
M
MOTOR
IC6901
PHOTO
SENSOR
IC6902
(OP AMP)
1
4
3
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