Part 4: Troubleshooting
4-9
2.3 IIC Bus D/A Converter (IC3561, M62392FP)
1
R
Reset input
I
2
SCL
P_SCK1
IIC BUS SCL
I
3
SDA
P_SDA1
IIC BUS SDA
I/O
4
A07
REF_R
Black to black Adjustment (Service mode No.10)
O
5
A08
REF_G
AV black level Adjustment (Service mode No.11)
O
6
A09
REF_B
AV black level Adjustment (Service mode No.12)
O
7
A10
-
Not used
O
8
A11
5V_SUB
Not used
O
9
A12
-
Not used
O
10
VrefL
DAC Lower Reference Voltage input
-
11
VrefU1
DAC Upper Reference Voltage input (CH5~CH8)
-
12
Vss
GND
-
13
VrefU2
DAC Upper Reference Voltage input (CH1~CH 4)
-
14
A01
FAN_CONT3
FN903, FN906
O
15
A02
FAN_CONT2
FN901, FN904
O
16
A03
FAN_CONT1
FN902, FN905
O
17
A04
-
Not used
O
18
A05
NRSA
NRS Adjustment (Service mode No.20)
O
19
A06
NRSB
NRS Adjustment (Service mode No.19)
O
20
Vcc
Power Supply for Output Buffer (+5V)
-
21
Vdd
Power 5V
-
22
CS2
Slave address setting port 2 (Vdd)
I
23
CS1
Slave address setting port 1 (Vdd)
I
24
CS0
Slave address setting port 0 (Vdd)
I
Pin No.
Name
Function
I/O
2.4 IIC Bus D/A Converter (IC3571, M62392FP)
1
R
Reset input
I
2
SCL
P_SCK2
IIC BUS SCL
I
3
SDA
P_SDA2
IIC BUS SDA
I/O
4
A07
-
Not used
O
5
A08
-
Not used
O
6
A09
-
Not used
O
7
A10
-
Not used
O
8
A11
-
Not used
O
9
A12
-
Not used
O
10
VrefL
DAC Lower Reference Voltage input
-
11
VrefU1
DAC Upper Reference Voltage input (CH5~CH8)
-
12
Vss
GND
-
13
VrefU2
DAC Upper Reference Voltage input (CH1~CH 4)
-
14
A01
R_V1
Video signal reference voltage (-) R
O
15
A02
R_V2
Video signal reference voltage (+)R
O
16
A03
G_V1
Video signal reference voltage (-)G
O
17
A04
G_V2
Video signal reference voltage (+)G
O
18
A05
B_V1
Video signal reference voltage (-)B
O
19
A06
B_V2
Video signal reference voltage (+)B
O
20
Vcc
Power Supply for Output Buffer (+5V)
-
21
Vdd
Power 5V
-
22
CS2
Slave address setting port 2 (Vdd)
I
23
CS1
Slave address setting port 1 (Vdd)
I
24
CS0
Slave address setting port 0 (GND)
I
Pin No.
Name
Function
I/O
Summary of Contents for LV-S3E/D78-5423
Page 2: ...CANON Multimedia Projector LV S3U D78 5422 LV S3E D78 5423 SERVICE SMANUAL ...
Page 9: ...Part 1 General Information ...
Page 24: ...Part 2 Repair Information ...
Page 42: ...Part 3 Adjustment ...
Page 59: ...Part 4 Troubleshooting ...
Page 73: ...Part 4 Troubleshooting 4 14 BA7078AF Sync Detector IC5301 BA9743AFV DC DC Converter IC371 ...
Page 74: ...Part 4 Troubleshooting 4 15 LM4865 Audio Amplifier IC5003 PW168A Scaler Main CPU IC301 ...
Page 76: ...Part 5 Parts Catalog ...
Page 77: ......
Page 93: ...Part 6 Electrical Diagrams ...