Part 4: Troubleshooting
4-11
Note : Other functions except for system control are not listed.
2.2 IIC Bus D/A Converter (IC3531, M62398FP) Port Functions
184
D4
D4
Data Bus 4
I/O
121
D3
D3
Data Bus 3
I/O
50
D2
D2
Data Bus 2
I/O
49
D1
D1
Data Bus 1
I/O
183
D0
D0
Data Bus 0
I/O
127
RD
RD
Read Enable
Not used
I/O
56
WR
WR
Write Enable
Not used
I/O
118
BHEN
BHEN
High Byte Enable
Not used
I/O
188
ROMOE
ROMOE
ROM Output Enable for Flash ROM
O
126
ROMWE
ROMWE
ROM Write Enable for Flash ROM
O
125
RAMOE
RAMOE
RAM Output Enable
Not used
O
54
RAMWE
RAMWE
RAM Write Enable
Not used
O
177
Port C1
CS3
Chip Select 3
Not used
O
230
Port C0
CS2
Chip Select 2
Not used
O
238
EXTINT
EXTINT
External Interrupt Input
I/O
120
NMI
-
Non-maskable Interrupt (Not used)
(set L)
I
48
RESET
RESET
Master Reset Input
I
233
ADR24B
ADR24B
24bit Address Select Input
(set H)
I
133
MODE3
MODE3
Internal Oscillator Enable Input
(set H)
I
290
MODE2
MODE2
Reserved
(set L)
I
248
MODE1
MODE1
Internal MCLK PLL Enable Input
(set H)
I
232
MODE0
MODE0
Internal DCLK PLL Enable Input
(set H)
I
Pin No.
Name
Function Name
Function
Polarity
I/OI/O
1
R
Reset input
I
2
SCL
P_SCK2
IIC BUS SCL
I
3
SDA
P_SDA2
IIC BUS SDA
I/O
4
A07
REF_R
Black reference adjustment_R
O
5
A08
REF_G
Black reference adjustment_G
O
6
A09
REF_B
Black reference adjustment_B
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 (+12V)
-
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 D78-5532
Page 2: ...CANON Multimedia Projector LV X4U D78 5532 LV X4E D78 5533 SERVICE SMANUAL ...
Page 9: ...Part 1 General Information ...
Page 26: ...Part 2 Repair Information ...
Page 43: ...Part 3 Adjustment ...
Page 62: ...Part 4 Troubleshooting ...
Page 79: ...Part 4 Troubleshooting 4 17 AN5870SB RGB SYNC SW IC5201 LM4889 Audio Amplifier IC5031 ...
Page 81: ...Part 4 Troubleshooting 4 19 FA5502 P F Control IC621 VPC3230D Video Decoder IC101 ...
Page 84: ...Part 4 Troubleshooting 4 22 TA1370FG Sync Separator Frequency Counter IC5302 ...
Page 85: ...Part 5 Parts Catalog ...
Page 86: ......
Page 94: ......
Page 100: ...Part 6 Electrical Diagrams ...