IMMEDIATE ATTENTION TECHNICAL MANAGER Important Safety Advice Installa

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IMMEDIATE ATTENTION TECHNICAL MANAGER Important Safety Advice Installa

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ABLE Systems Limited
IMMEDIATE ATTENTION TECHNICAL MANAGER Important Safety Advice Installation Ap800 Printers
Products Affected: Ap800 printers when used with "AP800DC-DC" "AP800-OEMPSA" power packs. (This includes Ap863, Ap890, Ap892 customer specific variants). Users other power pack options (e.g. Battery packs "AP800BP-01" "AP800-MHBP", mains adaptor "AP800-PSA") affected disregard this memo. USERS AFFECTED PRODUCTS SHOULD READ THIS DOCUMENT CAREFULLY CONSIDER MAKING APPROPRIATE CHANGES EVEN INSTALLED SYSTEMS THAT APPEAR WORKING CORRECTLY. WARNING: FAILURE IMPLEMENT THIS ADVICE LEAD OVERHEATING BURNING WIRING, PRINTER OTHER PARTS INSTALLED SYSTEM, WHICH ABLE SYSTEMS LIMITED WILL HELD RESPONSIBLE.
Ap800 Printer
Power Pack (AP800DC-DC AP800-OEM-PSA) Data Cable
Power Cable
affected systems primary power applied Power Connection power pack. case "AP800DC-DC", this nominal +12V from vehicle supply, case "AP800-OEMPSA" this direct 7.5V supply used internally printer. Data Connection contains RS-232 Transmit, Receive Busy signals well signal common connection. Power Connection Data Connection must same electrical potential. However, former reasonably expected carry several amps primary power printer, while latter would normally expected only signal reference carry milliamps most.
Ref: "Important Safety Advice Ap800.doc" Document Revision: "1.0" Document Date: Sep. 2002"
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Problem Under certain circumstances connection from Power Pack Ap800 Printer become relatively high impedance path. (For example spring contacts become dirty damaged) this occurs, primary power printer instead flow through current capability cabling Data Connection. This lead overheating cabling, printer, host equipment, combination these. Advice Able Systems recommends that systems which have dual connections (i.e. Power Connection further Data Connection), that Data Connection modified remove connection. Alternatively, connection should fitted with fuse e.g. 100mA less. Either solution ensures that high current flow through current capability cabling. Failure implement this advice lead overheating burning wiring, printer other parts installed system, which Able Systems Limited will held responsible.
doubt about this advice, require more information, please contact Evans, Engineering Manager.
Ref: "Important Safety Advice Ap800.doc" Document Revision: "1.0" Document Date: Sep. 2002"
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IMMEDIATE ATTENTION TECHNICAL MANAGER Important Safety Advice Installa

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