Casio TK-7500 Troubleshooting Manual - Page 9

Browse online or download pdf Troubleshooting Manual for Cash Register Casio TK-7500. Casio TK-7500 19 pages. Electronic cash register
Also for Casio TK-7500: Service Manual (3 pages)

Print Page

1. Trouble Shooting Procedures

[ RAM1 chip enable signal ]

RAM1 IC3

RAM1 Data bus D0

RAM1 chip enable

Pin No.22

RAM1 Address bus A0

- 9 -

Trouble shooting ECR V1.01

RAM Chip enable signal

RAM1 chip enable

Pin No.4 IC30 (74LV02)