Ram Error - ENCAD CADJET 2 Service Manual

Troubleshooting

10.0 RAM Error

At Initialization, a message of RAM HIGH or RAM LOW may appear
for one of the following reasons:
1. The most common cause of this message is the incorrect
installation of any extra RAM (SIMMS). Refer to the removal and
replacement procedures in Chapter 5, Section 4.5 and check the
SIMMS installation if any extra RAM was installed on the plotter.
2. The SIMM may be defective or not compatible with the plotter
circuits. The SIMM type needs to meet parity by 8 or 9 bits and
the speed needs to be 70 nanoseconds or faster.
CADJET 2 User's Guide for information concerning the acceptable
SIMMS sizes and the replacement procedure in Chapter 5,
Section 4.5 of this service manual.
3. The socket on the MPCB may be defective. In this case, replace
the MPCB according to the procedure in Chapter 5, Section 4.3.
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CADJET 2