Power-On Initialization Tests
When first
control panel will brieflyServodisplayProcessor“ Revision”, evenx.xif. no firmware is installed. If t initialization cannot proceed past this display, the firmware should be checked (or insta display shown willSelfbeTest“ Please”.Wait
Refer to the following table for a description of the
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Test # | Test | Description | |
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1 | Test RAM Memory | Checks RAM not used for system. | |
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2 | Test ROM | Firmware checksum. | |
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3 | Scanner Check | Calibrates scanner. Calibrated sensitivity level checked | |
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| minimum reference level. | |
4Printer Mechanism CheckPaper drive motor is briefly driven, carriage driven to s tion position, presence of encoder feedback checked, ext carriage position located, paper pick mechanism exercis presence and ink level detected, carriage returned to s tion.
5 | SRAM Checksum | Catches SRAM corruption or SRAM lost due to a low or | |
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| defective battery. | |
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6 | LIU Code # | Matches the LIU code read from the LIU to that which is | |
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| already stored in SRAM. | |
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7 | SRAM Version # | Compares the SRAM version number read from firmware to | |
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| which is already stored in SRAM. | |
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8 | LIU Check | Checks if the LIU is present. A system error code will be | |
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| displayed if there is no LIU. | |
When the display readsReady“ (receive mode) (date)”, the(time)test is complete.
If an error is detected, an error message or diagnostic code will be displayed. If neces messages and diagnostic codes presented earlier in this chapter.
