
-9-
+3.3V
5) IC4265 (GC4U) communication Error detection circuit
MAIN C.B.A. (CIRCUIT BOARD DG)
SOS: No acknowledge reply
SOS: Abnormal rotation
(NTSC: less than 60Hz or more than 360Hz)
SOS: 0V on +3.3V line
SOS: 0V on DT+9V line
MAIN C.B.A. (CIRCUIT BOARD DG)
4) Abnormal Voltage (+3.3V line) for Main C.B.A. (Circuit Board DG) detection circuit
Normal
SOS
Normal
CW INDEX
SOS
PDG4
PL1
DMD DRIVE C.B.A.
(CIRCUIT BOARD L)
COLOR WHEEL C.B.A.
(CIRCUIT BOARD CW)
COLOR WHEEL UNIT
MAIN C.B.A. (CIRCUIT BOARD DG)
16
16
PL2
PL3
PCW1
3
3
IC1102
(MAIN MICROCONTROLLER)
CW DET
CPLD
110
6) Abnormal Color Wheel rotation detection circuit
PDG1
PA
16
21
21
IC6901
COLOR WHEEL
MOTOR
IC6903
(COMPARATOR)
PHOTO
SENSOR
V-REF
4
IC6006
(BUFFER)
IC6004
(DMD CONTROL)
IC6011
(MOTOR DRIVE)
16
4
14
6
IC4200
40
1
3
IC6902
(OP AMP)
4
1
3
5
180Hz (NTSC)
150Hz (PAL/SECAM)
3V
84
85
I2C SERIAL CLOCK2
I2C SERIAL DATA2
acknowledge
IC4258
(MAIN VIDEO SIGNAL PROCESS)
IC1102 (MAIN MICROCONTROLLER)
IC1102 (MAIN MICROCONTROLLER)
I2C SERIAL CLOCK2
I2C SERIAL DATA2
IC4257
(SUB VIDEO SIGNAL PROCESS)
I2C SERIAL CLOCK2
I2C SERIAL DATA2
25
26
65
64
IC4265
(VIDEO SIGNAL PROCESS)
I2C SERIAL CLOCK2
+3.3V SENS
I2C SERIAL DATA2
A3
A4
63
DT+9V
MAIN C.B.A. (CIRCUIT BOARD DG)
BASE C.B.A. (CIRCUIT BOARD A)
3) Abnormal voltage (+9V line) detection circuit
Normal
SOS
IC1102 (MAIN MICROCONTROLLER)
+9V SENS
108
+12V
+9V
REG
2
1
IC2803
PDG1
PA
16
25
25
26
26
BASE C.B.A. (CIRCUIT BOARD A)
+12V
+3.3V
REG
2
1
IC2804
AC2
M
Содержание PT56DLX75 - 56" DLP TV
Страница 1: ...ORDER NO MKE0508855C1 Multi Media Display PT 56DLX75 PT 61DLX75 SPECIFICATIONS 1 ...
Страница 8: ...11 2 OPERATION C B A 12 EXPLODED VIEWS 12 1 MAIN PARTS SECTION 8 ...
Страница 9: ...12 2 FRONT AND BASE SECTION 9 ...
Страница 10: ...12 3 DISPLAY SECTION 10 ...
Страница 11: ...11 ...
Страница 12: ...12 4 SCREEN SECTION 12 ...
Страница 13: ...13 ...
Страница 14: ...12 5 OPTICAL BLOCK SECTION 14 ...
Страница 15: ...12 6 TV UNIT SECTION 15 ...
Страница 16: ...12 7 PACKING PARTS AND ACCESSORIES SECTION 16 ...
Страница 22: ...74 LSMA0844 MAIN TUNER BOARD MOUNT METAL 6 22 ...
Страница 79: ... 47 PT 61DLX75 Remove the Screen Unit by removing the 17 Screws 401 Fig D5 1 2 401 401 Screen Unit ...