Canon multipass c3000 Service Manual (en)

Download
Signal circuit
Part 2: Printer
1-6
HOSTCLK (-STROBE)
+ 5V
1 K
Ω
SN74LS14N
 or equivalent
100 
Ω
(DATA)
+ 5V
3.3 K
Ω
+ 5V
SN74LS14N
 or equivalent
3.3 K
Ω
(-ERROR)
(PE)
(SELECT)
(-ACKNLG)
Input circuit
Output circuit
GA
SN74LS245
DIR
100 
Ω
(-AUTO FEED XT)
HOSTBUSY
+ 5V
3.3 K
Ω
GA
(BUSY)
+ 5V
1 K
Ω
GA
SN74LS05
 or equivalent
SN74LS05
 or equivalent
470 pF
470 pF
470 pF
470 pF
470 pF
470 pF
+ 5V
SN74LS14N
 or equivalent
3.3 K
Ω
(-SELECT IN)
1284A
+ 5V
SN74LS14N
 or equivalent
3.3 K
Ω
100 
Ω
(-INIT)
0.01 
µ
F
Figure 1-2 Signal Circuits