Casio CTK-711EX Service Manual

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Pin No. Terminal In/Out Function
90 ~ 92 Not used.
93 VCC In +5 V source
94, 95
97 ~ 105
EA0 ~ EA14 Out Address bus for the working RAM
107, 109
110, 112
96 EWEB Out Write enable signal output for the working RAM
106 EOEB Out Read enable signal output for the working RAM
108 VCC7 In +5 V source
111 ECEB Out Chip select signal output for the working RAM
113 ~ 117 Not used.
118 VCC4 In +5 V source
119 GND4 In Ground (0 V) source
120 ~ 122 Not used.
123 ~ 130 ED0 ~ ED7 In/Out Data bus for the working RAM
131 GND5 In Ground (0 V) source
132 ~ 134 Not used. Connected to ground.
135, 136 Not used.

Casio CTK-711EX Specifications

General

Brand	Casio
Model	CTK-711EX
Category	Electronic Keyboard
Language	English