2.6 Output Expander (IC1803, TC74LCX574FT) Port Functions
2.7 Output Expander (IC1804, TC74LCX574FT) Port Functions
2.8 LAMP CPU (IC4811, PIC16F88) Port Functions
Part 4: Troubleshooting
4-13
1
OE
IO_ENB
I
2
D0
D0
I
3
D1
D1
I
4
D2
D2
I
5
D3
D3
I
6
D4
D4
I
7
D5
D5
I
8
D6
D6
I
9
D7
D7
I
10
GND
GND
-
11
CK
ADD1_CS
Output Port Chip Select
Enable = L
I
12
Q7
--
O
13
Q6
--
O
14
Q5
--
O
15
Q4
LAMPDC_ON
Drives Lamp Ballast Unit
Power-on=H
O
16
Q3
DC_ON
Drives 15.5V Power Supply
Power-on=H
O
17
Q2
ON_3.3V
Drives 3.3V Power Supply
Power-on=H
O
18
Q1
FAN_SW2
Not used
O
19
Q0
FAN_SW1
Drives FAN_B, FAN_C Power Supply
Power-on=H
O
20
Vdd
Power 3.3V
-
Pin No.
Name
Function Name
Function
Polarity
I/O
1
OE
IO_ENB
I
2
D8
D8
I
3
D9
D9
I
4
D10
D10
I
5
D11
D11
I
6
D12
D12
I
7
D13
D13
I
8
D14
D14
I
9
D15
D15
I
10
GND
GND
-
11
CK
ADD1_CS
Output Port Chip Select
Enable = L
I
12
Q7
MUTE
Mute Output
Mute-on=H
O
13
Q6
CG-FILT
Filter-on at RGB signal
O
14
Q5
FILT_480P/575P
Filter-on at 480p/575p signal
O
15
Q4
CABLE_SW
Long cable switch (Service mode No.57)
Long cable=H
O
16
Q3
PC/AV_SW
PC/AV Mode switch
PC=H
O
17
Q2
S/CV_SW
S-Video/Video switch
S-Video=L
O
18
Q1
MONIT_OUT
PC2 Monitor out Mode
PC2 MONITOR=H
O
19
Q0
PC1/PC2_SW
PC1/PC2 Mode switch
PC1=L
O
20
Vdd
Power 3.3V
-
Pin No.
Name
Function Name
Function
Polarity
I/O
1
RA2/AN2/CVREF/VREF-
2
RA3/AN3/VREF+/C1OUT
3
RA4/AN4/T0CKI/C2OUT
LAMP_ERR
Lamp Error Output
Lamp Error = H
O
4
RA5/MCLR/Vpp
RESET
5
Vss
GND
-
6
AVss
GND
-
7
RB0/INT/CCP1
LAMP_ON
Lamp ON/OFF signal
lamp ON = L
O
8
RB1/SDI/SDA
SDA
9
RB2/SDO/RX/DT
RX_LAMP
Lamp Status Signal
I
10
RB3/PGM/CCP1
Not used
-
11
RB4/SCK/SCL
SCL
12
RB5/SS/TX/CK
TX_LAMP
Control and Sync signal
Eco = H, Normal = L
O
13
RB6/AN5/PGC/T1OSO
RB6_PIC
Service
14
RB7/AN6/PGD/T1OSI
RB7_PIC
Service
15
AVDD
AVDD
Power 5V
-
16
VDD
VDD
Power 5V
-
17
RA6/OSC2/CLKO
CLKO
-
18
RA7/OSC1/CLKI
CLKI
-
19
RA0/AN0
LAMP_PWM
APL Level Input
I
20
RA1/AN1
LAMP_SW
Lamp_SW Input
Lamp-ON and Fan OK = H
I
Pin No.
Name
Function Name
Function
Polarity
I/O
Содержание LV-X4U
Страница 2: ...CANON Multimedia Projector LV X4U D78 5532 LV X4E D78 5533 SERVICE SMANUAL ...
Страница 9: ...Part 1 General Information ...
Страница 26: ...Part 2 Repair Information ...
Страница 43: ...Part 3 Adjustment ...
Страница 62: ...Part 4 Troubleshooting ...
Страница 79: ...Part 4 Troubleshooting 4 17 AN5870SB RGB SYNC SW IC5201 LM4889 Audio Amplifier IC5031 ...
Страница 81: ...Part 4 Troubleshooting 4 19 FA5502 P F Control IC621 VPC3230D Video Decoder IC101 ...
Страница 82: ...Part 4 Troubleshooting 4 20 L3E07070 Signal Processor for TFT LCD IC401 NJW1141 Audio Selector IC5001 ...
Страница 83: ...Part 4 Troubleshooting 4 21 STR Z2156A Power Switching Control IC631 PW168A Scaler Main CPU IC301 ...
Страница 84: ...Part 4 Troubleshooting 4 22 TA1370FG Sync Separator Frequency Counter IC5302 ...
Страница 85: ...Part 5 Parts Catalog ...
Страница 86: ......
Страница 94: ......
Страница 96: ...V 1 U 2 U 1 V 2 Z 1 Z 2 X Y W Accessories Page 5 CANON LV X4J LV X4U LV X4E REF NO D78 5531 D78 5532 D78 5533 ...
Страница 100: ...Part 6 Electrical Diagrams ...