Sam4s ER-250RF, Руководство по обслуживанию

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3. Installation and Operation
3-6 SAM4S ER-350 SERIES
3-3 Operation
3-3-2 Initial Clear
The Initial Clear procedure clears keyboard lock-ups and clears most error conditions. This procedure finishes the current
transaction / operation and clears the Temporary Memory Buffers. An Initial Clear does not affect register programming.
Nor does it erase Totals stored in RAM memory
PROCEDUR
1. Turn the Mode key to the “S” position.
2. Connect the AC Power Plug into a power outlet while pressing the +%, VD and TAX keys.
3. After clearing all RAM memory the register prints the following line:
4.
Caution: An Initial Clear causes balancing discrepancies if it is performed while in the middle of a transaction.
WARNING: if you ‘Power ON’ the ECR while the display connector on the PCB is open, the initial burst of
current may harm the system. The CPU is especially sensitive to power surges.
WARNING: Do an Initial Clear once only. Doing an Initial Clear more than once erases all programming and
Totals.
3-3-3 Service Mode Diagnostics
The Sam4s ER-350, ER-350P, ER-350F, and ER-350FP ECR offer several diagnostic routines while in the “P mode” Each
of these tests requires that the Mode key be in the “P Mode” position.
3-3-3-(a) Printer/Display Test
Procedure
1. Press the # / NS key. The register cycles completely through the Printer character set while it tests the display.
3-3-3-(b) EPROM Checksum Test
Procedure
1. Press the 1 key 4 times and press the CHARGE key. The printer prints (on a receipt) the software version and the
checksum data in the format shown below.
3-3-3-(c) Keyboard Test
Procedure
1. Press the 2 key 4 times then press the CHARGE key.
2. Press each key on the keyboard one key at the time. As you press each key. The Display shows the key’s location code.
3. Press the C key to exit the routine.
EP-ROM CHECK SUM = XXXX
### INITIAL RAM ALL CLEAR ###