Data General Service ECLIPSE MV/7800 - Electrostatic Discharge (Esd) Procedure; Troubleshooting with Power-Up Self Test

Table 4-4. Power-Up Self Test - Failed - XX Definitions
CATEGORY 1
ERROR CODE
CATEGORY 2
ERROR CODE
:DRP SELFTEST
00
:CHECKSUM EPROM
01
:ARCHITECTURAL CLOCK
02
:DUART
03
:STATIC RAM 2KB
04
:STATIC RAM 8KB
05
:RICOH
06
:NOVRAM
07
:COMSWITCH
10 
:CONTROL STORE
11 
:TIMEOUT ON CPU SUBTEST:CPU SUBTEST#
:CPU
20
21
22
:uSeq 
part no 3201
:CPU 
part no 3200
:MCU

part no 3412
23
:KERNEL MEMORY (1ST 256KB)
24
:PIO/DCH part no 3202
25
:8MC 
part no 5201
26
:SERIAL PORT
:MEMORY
30
:CPU MEMORY 2MB, 4MB
31
:EXPANSION MEMORY OMB, 2MB, 4MB, 10MB
CATEGORY 0
ERROR CODE
CATEGORY 3
ERROR CODE
4.2 ELECTROSTATIC DISCHARGE (ESD) PROCEDURE
The PCB's within the ECLIPSE MV/7800 computer contain metal-oxide-semiconductor (MOS) devices which
are sensitive to, and can be damaged by static electricity discharges. The proper method to eliminate ESD is to
ground the individual who is removing or replacing the PCBs.
To ensure that the PCBs are protected from ESD, an ESD kit (DOC Part No. 129-002200) should be used when
removing/replacing a PCB. Instructions in the ESD kit describes the proper use of the kit.
CAUTION
Damage to the PCBs can occur if proper ESD procedures are not
followed.
4.3 TROUBLESHOOTING WITH POWER-UP SELF TEST
The primary function of the power-up self-test is to detect hardware faults which would prevent the successful
booting of a device.
DGC CONFIDENTIAL - INTERNAL USE ONLY

4-7 
043-003621