![background image](http://html.mh-extra.com/html/canon/d78-5452/d78-5452_service-manual_62457075.webp)
2.5 Parallel Bus DA & I/O Port Functions
Part 4: Troubleshooting
4-9
IC2321
1
I
CS_IN
TC74LCX541
2
I
Not used
3
I
4
I
SC_SW
Scart Selection SIgnal input
L: Scart on
5
I
6
I
S_SW
S-Video Selection Signal input
L: S-Video on
7
I
CARD_IN
Imager Card Signal input
L: Imager on
8
I
W_LAN_IN
Wireless LAN Signal input
L: Wireless LAN on
9
I
VIEWER_ON
Viewer Unit Signal input
L: Viewer Unit on
IC2322
1
I
CS_IN
TC74LCX541
2
I
VSYNC_DET
V-Sync Signal input
Not used
3
I
4
I
5
I
6
I
8
I
9
I
IC2323
12
O
DVI_SW_N
DVI Input switch
DVI HDCP-in:High
TC74LCX574
13
O
PC/AV_SW
PC/AV switch
PC: High
14
O
COMPO
Component Mode switch
Component in:Low
15
O
PC1/PC2_SW
PC1/PC2 Mode switch
PC1: Low
16
O
MNTOUT
PC2 Monitor Output switch
Monitor-out: Low
17
O
VOL_SW
PC/AV Audio switch
PC Audio in: High
18
O
DDC_SW1
DDC switch
19
O
Not used
IC2324
12
O
MOUSE/CPU_SW
TC74LCX574
13
O
AUDIO_MUTE
Audio Mute switch
Mute-on: High
14
O
Not used
15
O
Not used
16
O
Not used
17
O
Not used
18
O
Not used
19
O
Not used
IC REF. NO
Pin
I/O
Signal Name
Function
Note
Содержание D78-5452
Страница 9: ...Part 1 General Information ...
Страница 25: ...Part 2 Repair Information ...
Страница 43: ...Part 3 Adjustment ...
Страница 66: ...Part 4 Troubleshooting ...
Страница 77: ...Part 4 Troubleshooting 4 11 4 IC BLOCK DIAGRAMS AD8075 Selector IC201 AN7513 Audio Output IC5601 ...
Страница 78: ...Part 4 Troubleshooting 4 12 AN5870 RGB SYNC SW IC1201 IC5201 BA7078 Sync Separator IC5341 ...
Страница 80: ...Part 4 Troubleshooting 4 14 CXD3536 LCD Driver IC401 FA5502 P F Control IC621 ...
Страница 81: ...Part 4 Troubleshooting 4 15 M62392 M62393 D A IC6271 IC281 ML60851 USB Driver IC9801 ...
Страница 82: ...Part 4 Troubleshooting 4 16 STR Z2156 Power Switching Control IC631 TB1274 Video Decoder IC3101 ...
Страница 83: ...Part 4 Troubleshooting 4 17 TC90A69F Y C Separator IC2101 ...
Страница 84: ...Part 5 Parts Catalog ...
Страница 85: ......
Страница 99: ...Part 6 Electrical Diagrams ...