Ohaus Corporation 29 Hanover Road Florham Park NJ 07932-0900 MODEL AS142 Impact Printer Instruction Manual
NOTE: THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO COMPLY WITH THE LIMITS FOR A CLASS A DIGITAL DEVICE, PURSUANT TO PART 15 OF THE FCC RULES. THESE LIMITS ARE DESIGNED TO PROVIDE REASONABLE PROTECTION AGAINST HARMFUL INTERFERENCE WHEN THE EQUIPMENT IS OPERATED IN A COMMERCIAL ENVIRONMENT. THIS EQUIPMENT GENERATES, USES, AND CAN RADIATE RADIO FREQUENCY ENERGY AND, IF NOT INSTALLED AND USED IN ACCORDANCE WITH THE INSTRUCTION MANUAL, MAY CAUSE HARMFUL INTERFERENCE TO RADIO COMMUNICATIONS.
TABLE OF CONTENTS INTRODUCTION .................................................................................................. 4 DESCRIPTION ..................................................................................................... 4 UNPACKING ........................................................................................................ 5 INSTALLATION .................................................................................................... 5 Environment ...................
INTRODUCTION This manual covers installation and operation for the Ohaus Model AS142 lmpact Printer. To insure proper operation of the printer, please read this manual completely. DESCRIPTION The Ohaus Model AS142 Impact Printer, is a dot-matrix microprinter which can interface directly to various Ohaus Balances which contain an RS232 lnterface connector. The printer can be used with Ohaus Balances Models AP, AS, GT, TP, TS, CT, MB200, I5, I10, I20W, Explorer and Voyager.
UNPACKING Your AS142 was shipped with the following items: • AC power adapter • Instruction manual • A paper roll and a ribbon are loaded inside the printer before packing. It is recommended to save the carton and packing material for storing, transporting the balance or returning it for service. INSTALLATION Environment The printer should always be used in an environment which is free from corrosives, vibration, and temperature or humidity extremes.
OPERATION Indicators and Switches Operation There are two indicators and two button switches on the panel of the printer. The power indicator is labeled ”P”. The other is the SEL indicator. A button switch is labeled ”SEL” for selecting ON/OFF. Another is labeled “LF” for paper line feeding. See illustration below for controls and indicators. P SEL LF SEL Indicators and Switches The SEL button can change the SEL indicator’s staus. When the SEL indicator is ON, the printer is ON.
On\Off Mode (Cont.) SEL has another function, to interrupt the printout. If SEL is pressed and then released during a printout, the printer will stop after completing the current line. At this point, you can load more paper. To complete the printout, press and release SEL button. The printer will run again at the point the printout was interrupted. Baud Rate Selection The baud rate of serial interface can be selected as 150, 300, 600, 2400, 4800 or 9600bps.
Serial Interface Connection The 25 pin connector is located on the back of the printer. The serial interface is standard RS232C compatible. PIN SIGNALS OF SERIAL INTERFACE TABLE Pin No. Signal 2 RxD 3 TxD 5 DTR 7 GND 8 CTS The operation procedure of the serial interface is shown as follows: 1. Select baud rate with DIP switches Sl-S3. 2. Select parity with DIP switches S4-S6. Ribbon Cassette - Loading A ribbon cassette has been put inside of the printer before packing.
2. Hold the left end of the ribbon cassefte with your left hand. Hold right end in right hand. Right thumb is on top and forefinger below. Lift the right end of the cassette with the end of the cassette with the right forefinger, then lift the left end. The ribbon Incorrect Action - Wrong Direction cassette will come off easily. CAUTION Never lift the left end first. This may damage ribbon and printer head. 3.Take a new ribbon. Hold the cassette as in step 2.
Secure the cassette on the printer head. The procedure may be repeated several times until it is easy to push the left end of the cassette onto the axle of the gear. Then, press down on the right end of the cassette with the right thumb as shown in the illustration. Press down the right end with thumb Sometimes, the cassette is put in correctly, but part of the ribbon rides up over the printer head. This may be cause by two reasons: 1. The paper has been loaded before the ribbon.
Loading Paper 1. The removable cover plate must be taken off for loading paper. 2.Cut the paper roll as shown. The paper roll may be placed inside or outside of the printer case. When the paper roll is placed inside, the end should be underneath as shown in the Cut the Paper roll illustration. Correct Paper Roll Loading, End is Underneath Wrong Paper Roll Loading When the paper roll is placed outside, the end should enter the case through the slot on the back of the printer.
Loading Paper (Cont.) 4. The SEL (Select) button is an ON/OFF toggle. Press to OFF, the SEL indicator will go off. Then, press LF (Line Feed) button and release it, the printer head begins to run. Feed in paper. The paper enters the printer head and comes out from the top of theprinter head. To stop paper feeding, press and release LF or SEL button. 5. Unplug the AC Adapter. 6. Feed the paper through the slot on the removable cover plate, then, push the plate back on the printer as before.
CARE AND MAINTENANCE To keep the Printer operating properly, the housing should be kept clean and free from foreign material. The following maintenance procedures and precautions should be followed: 1. Do not dismantle the printer head, 2. Do not leave power on when not in use for a long period. 3. Switch off, if printer does not not work normally. 4. Power supply must match the AC Adapter power requirements. 5. Do not lubricate the printer head. 6. Fluff and dust from paper are harmful to the printer head.
SERVICE INFORMATION If you cannot resolve problems with the printer, you will need to contact an authorized Ohaus Service Agent. For Service assistance in the United States, please call Ohaus Corporation toll-free at (800) 526-0659. An Ohaus Product Service Specialist will be available to help you.
REPLACEMENT PARTS Description OHAUS Part No. AC Adapter: 110/120 V ac 220 V ac 78202-02 78202-03 Ribbon: Paper (5 pack) 78203-01 78204-01 ACCESSORIES Description OHAUS Part No.
Ohaus Corporation 29 Hanover Road, Florham Park, NJ 07932, USA Tel: (973) 377-9000, Fax: (973) 593-0359 With offices worldwide. P/N 77826-02 © Ohaus Corporation 1996, all rights reserved.
