Part 4: Troubleshooting
4-12
1
R
Reset
Fixed “H”
2
SCL
IIC SCL
Active “L”
3
SDA
IIC SDA
Active “L”
4
AO7
RCLP
R Signal clamp reference voltage
5
AO8
GCLP
G Signal clamp reference voltage
6
AO9
BCLP
B Signal clamp reference voltage
7
AO10
AV/PC
AV/PC switch (L: AV H: PC)
8
AO11
SYNC_SW
Fixed “H”
9
AO12
G_BLK_DC
Video G signal pedestal voltage
10
VrefL
D/A converter lower ref. voltage Connected to GND
11
VrefU1
D/A converter upper ref. voltage (CH7~CH12) Vcc (5V)
12
GND
GND
GND
13
VrefU2
D/A converter upper ref. voltage (CH1~CH6) Vcc (5V)
14
AO1
SCP SW
Sandcastle pulse SW Video/S-Video/480i/575i: L else: H
15
AO2
BLANK SW
H Blank width SW 1080i/1035i/720p/480p/575p: H else: L
16
AO3
MACRO
H: PC, AV (1080i50Hz) L: AV
17
AO4
CBAL_SW
Color uniformity correction SW
18
AO5
B_BLK_DC
Video B signal pedestal voltage
19
Ao6
R_BLK_DC
Video R signal pedestal voltage
20
Vcc
Digital power supply
Vcc (5V)
21
Vdd
Analo gpower supply
Vcc (5V)
22
CS2
Chip Select 2
Fixed “L”
23
CS1
Chip Select 1
Fixed “H”
24
CS0
Chip Select 0
Fixed “H”
Pin No.
Name
Function
Action
2.5 IC Bus DA Converter (IC2161) Port Functions
1
R
Reset
Fixed “H”
2
SCL
IIC SCL
Active “L”
3
SDA
IIC SDA
Active “L”
4
AO7
REF_B
D/A reference voltage
5
AO8
REF_G
D/A reference voltage
6
AO9
REF_R
D/A reference voltage
7
AO10
Not used
0V fixed
8
AO11
Not used
0V fixed
9
AO12
Not used
0V fixed
10
VrefL
D/A converter lower ref. voltage Connected to GND
11
VrefU1
D/A converter upper ref. voltage (CH7~CH12) Vcc (5V)
12
GND
GND
GND
13
VrefU2
D/A converter upper ref. voltage (CH1~CH6) Vcc (5V)
14
AO1
B-CENT
Video center voltage
15
AO2
G-CENT
Video center voltage
16
AO3
R-CENT
Video center voltage
17
AO4
DWN
Panel control signal
18
AO5
RGT
Panel control signal
19
AO6
XRGT
Panel control signal
20
Vcc
Digital power supply
Vcc (5V)
21
Vdd
Analog power supply
Vcc (5V)
22
CS2
Chip Select 2
Fixed “L”
23
CS1
Chip Select 1
Fixed “L”
24
CS0
Chip Select 0
Fixed “L”
Pin No.
Name
Function
Action
2.6 IC Bus DA Converter (IC1581) Port Functions
Содержание D78-5311
Страница 9: ...Part 1 General Information ...
Страница 22: ...Part 2 Repair Information ...
Страница 43: ...Part 3 Adjustment ...
Страница 65: ...Part 4 Troubleshooting ...
Страница 82: ...Part 4 Troubleshooting 4 17 BA7078AF Selector IC6241 CXA2101AQ RGB Matrix IC4101 ...
Страница 83: ...Part 4 Troubleshooting 4 18 CXD2064Q Digital Comb Filter IC2101 L3E01031 Level Shift IC3501 IC3531 IC3561 ...
Страница 85: ...Part 4 Troubleshooting 4 20 ML60851 USB I F IC9801 M62393 D A IC2571 ...
Страница 86: ...Part 4 Troubleshooting 4 21 TB1274AF Video Decoder IC1101 TA1318N AFC Detector IC6171 ...
Страница 87: ...Part 4 Troubleshooting 4 22 FA7612CA PWC Controller IC65A IC671 IC681 STR Z2156 Switching Controller IC631 ...
Страница 88: ...Part 5 Parts Catalog ...
Страница 89: ......
Страница 107: ...Part 6 Electrical Diagrams ...
Страница 117: ......