IC Ref. No
Pin/Name I/O
Signal Name
Function
Note
IC1806
12
O
SCLK
3-Line Serial Clock
13
O
SDATA
3-Line Serial Data
14
O
DAC_STLOBE
DAC
Data Effective: Low
15
O
S&H_STLOBE
S&H
Data Effective: High
16
O
IRM_STLOBE
White Uniformity
Data Effective: Low
17
O
FAN_CONT2
Fan Speed Control 2
Fan Control ON: High
18
O
FAN_CONT1
Fan Speed Control 1
Fan Control ON: High
19
O
Not used
IC1807
12
O
Not used
13
O
DVS2
Vsync x 2Hz Output
14
O
LAMP_ON
Output Clock ON/OFF
Output Clock ON: High
15
O
LIM-OFF
16
O
Not used
17
O
Not used
18
O
CTS33
RS232C Relation
19
O
480I_SW
1080i/1035i/720p:Low,others to High
IC1808
2
I
KI1
Main Key Switch
3
I
KI2
Main Key Switch
4
I
KI3
Main Key Switch
5
I
KI4
Main Key Switch
6
I
Power_fail
Power Fail Detection
Abnormal: Low
Normal: High
7
I
Not used
8
I
Lamp_ERR
Lamp Fail
Abnormal: High
Normal: Low
9
I
Not used
IC1809
2
I
S_IN
S-Input Detection
S-Input: Low, others to High
3
I
CB_SW
Component-Input Detection
C-Input: Low, others to High
4
I
CR_SW
Component-Input Detection
C-Input: Low, others to High
5
I
CTS/V
6
I
OEM Option
7
I
OEM Option
8
I
OEM Option
9
I
OEM Option
Part 4: Troubleshooting
4-10
Summary of Contents for D78-5132
Page 2: ......
Page 3: ...CANON Multimedia Projector LV 7105U D78 5132 LV 7105E D78 5133 SERVICE SMANUAL ...
Page 10: ......
Page 11: ...Part 1 General Information ...
Page 12: ......
Page 33: ...Part 2 Repair Information ...
Page 34: ......
Page 54: ......
Page 55: ...Part 3 Adjustment ...
Page 56: ......
Page 77: ...Part 4 Troubleshooting ...
Page 78: ......
Page 81: ... Memo Part 4 Troubleshooting 4 3 ...
Page 94: ...Part 4 Troubleshooting 4 16 M62358FP DAC IC431 CXD3503R White Uniformity Compensation IC471 ...
Page 96: ...Part 4 Troubleshooting 4 18 IDT71V016S RAM IC811 CXA2016S Sync Separator IC1021 ...
Page 97: ...Part 4 Troubleshooting 4 19 MC10H351ML IC1501 LM76CHMX Thermal Sensor IC1831 IC1832 ...
Page 99: ...Part 4 Troubleshooting 4 21 TC4053BF Switching IC5001 SAA7114H Digital Video Processor IC5101 ...
Page 100: ...Part 4 Troubleshooting 4 22 ...
Page 101: ...Part 5 Parts Catalog ...
Page 102: ......
Page 104: ......
Page 117: ......
Page 118: ...Part 6 Electrical Diagrams ...
Page 119: ......