Part 4: Troubleshooting
4-7
2. CONTROL PORT FUNCTIONS
2.1 System Control & I/O Port Table (IC301)
178
Port A7
LAMP_PWM
PWM Output to Sub-CPU
PWM
O
115
Port A6
MUPO_ON
I
44
Port A5
M_SCL1
I/O
116
Port A4
M_SDA1
O
45
Port A3
M_SCL2
I/O
46
Port A2
M_SDA2
O
117
Port A1
SCLK
3 Line Serial Bus Clock
O
180
Port A0
SDATA
3 Line Serial Bus Data
O
173
Port B7
NMI
Reset SW Input
I
111
Port B6
IRM_STB
3 Line Serial Bus Strobe
O
40
Port B5
3L_EN
3 Line Serial Bus Enable
O
174
Port B4
POWER_FAIL
Power Fail Detection
Error = L
I
41
Port B3
A23
Address Bus 23
175
Port B2
A22
Address Bus 22
112
Port B1
A21
Address Bus 21
229
Port B0
A20
Address Bus 20
71
Port E7
5V_SW
Standby 5V OFF
Standby = L
O
139
Port E6
DCLK_SW
O
200
Port E5
VHDPEN
IC101 Video Decoder Enable
O
140
Port E4
LAMP_POW
Lamp ON to Sub-CPU
Lamp-ON = H
O
201
Port E3
USB_VBUS
USB Connector Detection
Not used
I
141
Port E2
USB_RST
USB Device Reset Output
O
72
Port E1
ON_15V
Standby 15V OFF
Standby = L
O
142
Port E0
USB_EN
USB Device Enable Output
O
119
Port F7
IRRCVR1
IR Receiver Input 1
Not used
I
182
Port F6
IRRCVR0
IR Receiver Input 0
I
47
Port F5
RXD
I
182
Port F4
TXD
O
189
Port F3
CS0
I/O Expander Chip Select (Output)
O
55
Port F2
CS1
I/O Expander Chip Select (Input)
O
207
Port F1
DCLKEXT
D-port Clock External Input
Not used
I
257
Port F0
MCLKEXT
Memory System Clock Input
Not used
I
194
A19
A19
Address Bus 19
63
A19
A18
Address Bus 18
132
A17
A17
Address Bus 17
62
A16
A16
Address Bus 16
61
A15
A15
Address Bus 15
131
A14
A14
Address Bus 14
193
A13
A13
Address Bus 13
247
A12
A12
Address Bus 12
60
A11
A11
Address Bus 11
246
A10
A10
Address Bus 10
59
A9
A9
Address Bus 9
130
A8
A8
Address Bus 8
129
A7
A7
Address Bus 7
192
A6
A6
Address Bus 6
128
A5
A5
Address Bus 5
58
A4
A4
Address Bus 4
191
A3
A3
Address Bus 3
190
A2
A2
Address Bus 2
245
A1
A1
Address Bus 1
244
A0
A0
Address Bus 0
242
D15
D15
Data Bus 15
I/O
241
D14
D14
Data Bus 14
I/O
187
D13
D13
Data Bus 13
I/O
53
D12
D12
Data Bus 12
I/O
124
D11
D11
Data Bus 11
I/O
186
D10
D10
Data Bus 10
I/O
240
D9
D9
Data Bus 9
I/O
123
D8
D8
Data Bus 8
I/O
185
D7
D7
Data Bus 7
I/O
122
D6
D6
Data Bus 6
I/O
Pin No.
Name
Function Name
Function
Polarity
I/O
Содержание LV-S3E/D78-5423
Страница 2: ...CANON Multimedia Projector LV S3U D78 5422 LV S3E D78 5423 SERVICE SMANUAL ...
Страница 9: ...Part 1 General Information ...
Страница 24: ...Part 2 Repair Information ...
Страница 42: ...Part 3 Adjustment ...
Страница 59: ...Part 4 Troubleshooting ...
Страница 73: ...Part 4 Troubleshooting 4 14 BA7078AF Sync Detector IC5301 BA9743AFV DC DC Converter IC371 ...
Страница 74: ...Part 4 Troubleshooting 4 15 LM4865 Audio Amplifier IC5003 PW168A Scaler Main CPU IC301 ...
Страница 75: ...Part 4 Troubleshooting 4 16 TA1370FG Sync Separator Frequency Counter IC5302 VPC3230D Video Decoder IC101 ...
Страница 76: ...Part 5 Parts Catalog ...
Страница 77: ......
Страница 93: ...Part 6 Electrical Diagrams ...