Memory Problems 8086 Computers

Go to 'Memory Problems 80286 to 80486 computers' for models:

PARITY CHECK 1
Indicates that memory on the system board has failed. If the system has a total of 512KB memory installed (8525), replace the memory module packages. If the system has a total of 640KB memory installed and the address (number displayed below PARITY CHECK 1) is less than 20000, replace the optional memory modules (8525), or the system board (8530). Otherwise, replace the memory module (8525) or S1 and S2 (8530).

PARITY CHECK 2
Indicates that an adapter memory module has failed. Go to UNDETERMINED Problems.

 +---+
 |001|
 +---+
 Memory errors are displayed as:
 AAAAAA BB CCCC 20X
 To isolate a memory failure, answer the following questions.
 DID YOU RECEIVE A '205 Memory ERROR' MESSAGE
 DURING POST OR WHEN RUNNING the Memory TESTS ?
           +---+
  Yes   No-+002|Go to step 011
 +-+-+     +---+
 |003|
 +---+
 IS the SYSTEM A TYPE 8530 ?
           +---+
  Yes   No-+004|Go to step 006
 +-+-+     +---+
 |005|
 +---+
 Replace the system board.
 +---+
 |006|
 +---+
 IS CCCC FOUR ZEROS (0000) ?
           +---+
  Yes   No-+007|For an C in CCCC that is not zero, replace
   |       +---+the corresponding modules as shown:
   |
   |                  C    C    C    C
 +-+-+               U35  U34  U22  U16
 |008|
 +---+
 WAS the SIXTH DIGIT IN AAAAAA 1,3,5,7,9,B,D  or  F ?
           +---+
  Yes   No-+009|Replace memory module ZM1.
   |       +---+
 +-+-+
 |010|Replace memory module ZM1.
 +---+
 +---+
 |011|
 +---+
 IS  BB  AN 01 ?
           +---+
  Yes   No-+012|IS CCCC FOUR ZEROS ?
   |       +---+
   |       IS CCCC FOUR ZEROS ?
   |                 +---+
   |        Yes   No-+013|
   |         |       +---+
   |         |       ARE the LAST TWO Cs IN CCCC ZEROS (00) ?
   |         |                 +---+
   |         |        Yes   No-+014|Replace Memory Module Package 1
   |         |         |       +---+(8525) or S2 (8530)
   |         |       +-+-+
   |         |       |015|Replace Memory Module Package 2 (8525)
   |         |       +---+or S1 (8530)
   |       +-+-+
   |       |016|
   |       +---+
   |       WAS the SIXTH DIGIT IN AAAAAA 1,3,5,7,9,B,C,D or F ?
   |                 +---+
   |        Yes   No-+017|Replace Memory Module Package 1 (8525)
   |         |       +---+or S2 (8530)
   |       +-+-+
   |       |018|Replace Memory Module Package 2 (8525)
   |       +---+or S1 (8530)
 +-+-+
 |019|
 +---+
 The adapter memory failed. Go to 'UNDETERMINED Problems'.

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