HP 82718A Service Manual

Service Manual Reorder Number Printed In U.S.A. 82718-90006 ®/84 ...

3-1 3-3 ROM ICs : 3-2 3-4 Modem Controller Circuitry ...

2-2 HP 82718A Block Diagram 3.]^ 4-1 Bottom-Case and End-Retainer Screws and Battery Compartment 4-2 4-2 " 4-3 4-4 4-5 Power-PCA Mounting Screws 4.2 Disconnecting the Modem Flex Cahle 4.3 ROM-Connector-Shield Screw ...

This manual contains the information you will need to service the HP 82718A Expansion Pod. You should read this manual through once completely before attempting any repairs, assome steps assume a prior knowledge of other steps and cautions. The manual contains the following seven sections: • Section 1 - Product Information. This sectio ...

The pod is a portable, battery-operated accessory for the HP-75C/Dcomputer; it adds two enhancements to the computerthat are valuable for RDDP (remotedata distributed processing) applications: an integral direct-connect modem and extended memory. ...

Table 1-1. Specifications Physical • Dimensions (HP-75 plus pod): 29.2 cm by 16.5 cm by 6.4 cm (11.5" by 6.5" by 2.5") • Weight (HP-75 plus pod): 1.60 kilograms (56.5 ounces) Electrical • 175 milliamps (max) at 5.2 to 5.5 Vdc. Environmental • Operating temper ...

tional operation. 2-2. Preparation To prepare your pod for operation, do the following: a. If the end retainers are in place, remove them by unscrewing the six long screws in the bottom case. Figure 2-1. End Retainer S ...

and installing the end retainers. ROM Connector Figure 2-2. HP-75 Installation e. Install charged batteries and the battery door in the pod. ' Figure 2-3. Batteries Installed in the Pod f. Remove a dummy ROM if present from either o ...

a. Press Iattn I. The HP-75 should turn on. If it doesn't, go to table 5-2. b. Ifthe HP-75 turns on, go into the edit mode (press rEPirl). type in RUN "P" and press fWrNl. The pod test program runs. (You will need to press IEDIT Itwice if this is a c ...