crwdns2936637:0crwdne2936637:0 crwdns2853008:0crwdne2853008:0 crwdns2918746:0crwdne2918746:0

crwdns2933803:07crwdne2933803:0

crwdns2933797:0jdp23crwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 jdp23

crwdns2933769:0crwdne2933769:0
crwdns2933771:0crwdne2933771:0
crwdns2933801:0crwdne2933801:0

crwdns2933807:0crwdne2933807:0

[* black] Let's take a look at the circuit board.
[* red] This flexible circuit connects the actual print head to the circuit board.
-[* orange] This is the dual ribbon cable connecter that connects to 2 15-pin ribbon cables to the printer's logic board.
+[* orange] The dual ribbon cable connector
[* yellow] The contacts for the ink cartridge chips
[* green] This appears to be a test point of some kind.
-[* blue] This decoder/multiplexer chip on the flexible circuit appears to take 16 inputs and provide over 240 outputs for the print head.
+[* blue] This decoder/multiplexer chip on the flexible circuit appears to take 16 inputs and provides over 240 outputs for the print head.