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External layout of indicator III. Wireless working mode IV. Wire working style V. Replacing the printing paper and the ink ribbon of the micro printer VI. External printer installation VII. Communication interfaces VIII. Scoreboard Connection IX. Charge III Keypad Functions I. Keys setting and keypad layout II. Keys functions . Data Printing Format I. Micro-printer printing format II. External printer printing format V Error message from wrong operation VI Error message from wrong inner operatio