Technical data

2
Troubleshooting
This chapter contains information for troubleshooting the new devices
available on the VAXstation 3100 model 38 and 48 systems. The label
on the back of the system box indicates which model you are working
on. The WS42A-xx model number on the label identifies model 38 and
the WS42B-xx model number identifies model 48 systems. All procedures
in this chapter apply to both system models unless specifically listed in
the section titles or as described in the text. Also, all troubleshooting
procedures are done while in console mode (operating system software
halted).
2.1 Troubleshooting Procedures
This section contains troubleshooting information for the devices listed
below. If the device you need to troubleshoot is not listed below, use
the troubleshooting procedures in Chapter 2 of the VAXstation 3100
Maintenance Guide.
• 8 Mbyte memory module (Section 2.2)
• RX23 diskette drive with the SCSI adapter module (Section 2.3)
• RZ56 disk drive expansion box (See Chapter 6)
2.2 TEST B — Memory (8 Mbyte Module)
The procedure for troubleshooting the 8 Mbyte memory module is
the same as troubleshooting the other memory modules. You need to
remember that the 8 Mbyte module contains dual port connectors which
means that a 4 or a 12 Mbyte memory module can be attached underneath
it (similar to the 16 Mbyte memory module).
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