Signal Contacts - Canon BJC-55 Service Bulletin

BJC-50

6.3 Signal Contacts

The scanner cartridge is recognized by TOP.S, DIAS and CCHK signals. The scanned
image output to the printer is transmitted with a SCLOCK signal in sync with a SDATA
signal.
The scanner is controlled by the internal register setting signals, CMD0, 1, 2 and 3.
TABLE 4-6 LIST OF SCANNER CARTRIDGE SIGNAL CONTACTS
No. Signal
1, 2 LAMP G
5, 6 V LAMP
9 TOP. S
10 C. CHA
11 ID0
12 ID1
13 INKS 2
14 Vss
19 COM 0 (REN)
20 COM 1 (RWR)
21 COM 2 (RDT)
22 COM 3 (N.C)
23 Vdd
24 S CLOCK (DTCK)
25 S SYNE (LNST)
26 S RES
28 S DATA (DT)
29 C. CHK
Scanner Cartridge
Figure 4-35 Contact Pad Layout
Type
... GND for LED
IN LED drive voltage (+24Vdc)
OUT Scanner detection GND
OUT Scanner detection OPEN
OUT Color scanner cartridge
acknowledge signal
OUT Color scanner cartridge
acknowledge signal
OUT IS-11/IS-12 detection
GND GND
IN Register enable
IN Register write clock signal
IN Register data signal
... Not used
... IC driver voltage (+5Vdc)
OUT Scan data transfer signal
IN Line start signal
IN System reset signal
OUT Scan data
OUT HScanner detection OPEN
28
29
24
26 25
23
21 22
20
27
18 17
19
16
15
11 12 13 14
3
10
9 8
7
4 6 5
2 1
Description
4-49
Part 4: Technical Reference
(Ref. BJ Cartridge)
VHG
HVH
TOP
DIODEA
ID0
ID1
—
HVss
Odd ENB
BENB1
BENB2
BENB3
HVdd
HCLK
HLATCH
HRES
HDATA
DIODEK