Service manual

Samsung Electronics 5-19
HSM
(Pwr)
BA3
(Load)
BA1
(Clock1)
BA2
(Clock2)
HEAD-DATA
bit7
Min 500ns Clock Delay
bit6 bit5 bit4 bit3 bit2 bit1 bit0
Head I.D read : HEAD-DATA
Mono : 07H
Color : 08H
Color Head
Fig.5-1-14. Temperature around Color Head
Fig.5-1-15. HEAD DETECTION TIMING DIAGRAM
No Pre-Heating
¥ HEAD DETECTION CIRCUIT
Babbage ink cartridge has 8-bit mask ROM I.D. to check the type of cartridge. In order to detect the head,
HSM signal is used as ENABLE signal and BA3 signal as START & STOP BIT, and BA1 and BA2 as clock
signal of each bit, and ID signal in the cartridge is put in HEAD-DATA port of KS32C6200 through BS1 line.
With each bit controlled, 8bit I.D data is read and STOP bit is put out of BA3(LOAD) port. Then it finishes.
If data is mono, it is 07H. If color, 08H.
70°C
t