GP-1670 / GP-1870 - Chart cards not reading once inserted
GP-1670 GP-1870 GP-1670F GP-1870F
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Please check the position of the switch on the side of the card.
If set incorrectly the chart card will fail to read.
Testing using this method will cause no hard to the unit and always worth checking before sending the unit in for inspection.
Please note: Before removing or inserting your chart card, please ensure the unit is powered down. Alternatively please follow the procedure for removing/replacing the chart as described in the manual.