51 lines
1.6 KiB
Plaintext
51 lines
1.6 KiB
Plaintext
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AST RESEARCH, INC. TECHNICAL BULLETIN #TB-0348 12/16/88
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TURBOLASER/PS ROTARY SWITCH CONNECTOR TO PCB
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PROBLEM:
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Some early models of the TurboLaser/PS printers contain
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Rotary Switch Assemblies that have a four position connector
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housing. This switch matches the four position post header of
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J-3 located on the early model PostScript PCB's. Later model
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printers contain Rotary Switch Assemblies that have a five
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position connector that match the five position post header at
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J-3 on the newer model PostScript controller boards.
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This has created a problem of incompatibility between the
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PostScript printers: IE: new model printers with the five
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position Rotary Switch connectors, will not be able to
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utilize older model PostScript PCB,s, and older model printers
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will not be able to utilize the newer model PostScript PCB,s.
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HISTORY OF CHANGES
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The Rotary Switch Assy, AST Part Number 220261-001 has the
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five position connector.
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The Rotary Switch Assy, AST Part Number 220261-002 has the
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four position connector.
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The TurboLaser PostScript PCB AST Part Number 202219-001
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(artwork REV X3 and below) has the four position post header
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at J-3.
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The TurboLaser PostScript PCB AST Part Number 202219-001
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(artwork REV X4 and above) has the five position post header
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at J-3. Note: Rev A is later than any X type revision.
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SOLUTION
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If maintenance of the TurboLaser/PS printer requires
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replacement of either the Rotary Switch Assembly or the
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PostScript PCB, the technician must be aware of the
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differences mentioned above and insure that correct parts are
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available to make the repair.
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