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8Ć18 Troubleshooting
C3187Ć90000
Service Tests
Test Description
Bail Cycle Test This tests the following:
D Bail
D Bail sensor switch
D Drive Mechanics
D Main PCA
Bail-Sensor Test This tests the following:
D Bail sensor switch
D Main PCA
D Mechanical interference
Electrical Test The electrical test performs all of the following:
D Carriage communications test
D Carriage ASIC test: Values stored in the carriage ASIC registers are
temporarily stored. All registers are tested by writing, then reading, the
numbers AA(hex) and 55(hex). When the test is complete, previously
stored values are restored.
D Cartridge interface ASIC test: Verifies the functionality of the cartridge
interface ASIC.
D Cartridge ASIC / carriage ASIC link test
D EEROM checksum
D On-board SIMM RAM test
D ROM CRC test: Performs a ROM checksum and compares it to a
checksum value previously stored.
D Swath RAM test: Tests the RAM used by the cartridge interface ASIC to
store the swath.
Input/Output Test The input/output test performs the following:
D Parallel input/output test: Reads the data and status registers of the
Bi-Tronics PAL. (Tests only a small portion of the Bi-Tronics input/output
functionality.)
D Serial input/output test: Verifies the ability of the RS-232 interface to send
and receive data. This test uses a special loopback connector (part number
07440-60302) to connect the output to the input.