Phaser 6128MFP Service Manual
4-3
General Troubleshooting
Power On Self Test (POST)
POST Diagnostics provide a quick mean of isolating a defective subsystem
associated with the Image Processor Board and SDRAM. POST returns control to
the boot loader and the operating system is loaded.
The following tests are performed when the printer is powered On.
1. Checks and initializes CRU Register.
2. Initializes ASIC.
3. Checks RAM.
4. Initializes the Control Panel driver.
5. Processes the ROM Sum Check.
6. Initializes Memory Manager.
7. Initializes EEPROM driver.
8. Initializes IOT Controller.
9. Starts the Operating System process.
POST Test Description
Test
Error
Description
CodeROM
116-317
This test calculates the ROM checksum chip
by chip and compares it with the value stored
in CodeROM.
FontROM
This test calculates the FontROM checksum
chip by chip and compares it with the value
stored in FontROM.
116-310
Checksum error is in the built-in FontROM.
116-317
Checksum error is in the main program ROM.
EEPROM
This test verifies the EEPROM.
116-323
Error in EEPROM0 during initialization.
116-326
Error in EEPROM1 during initialization.
DRAM
This test checks the DRAM.
116-315
Error if included RAM is different.
116-316
Error if extended RAM is different.
116-320
Error if extended RAM is not supported.
MAC+PHY Test
116-352
This test performs PHY internal loopback.
ASIC
116-343
Performs register test.
PANEL
This test checks Control Panel function.
IOT
024-371
This test performs communication tests
between the print engine and controller.
Содержание Phaser 6128 MFP
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Страница 409: ...6 Chapter Adjustments and Calibrations In this chapter Adjustments Calibrations Parameter Settings ...
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Страница 421: ...7 Chapter Cleaning and Maintenance In this chapter Service Maintenance Procedure Cleaning Maintenance ...
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Страница 587: ...A Appendix Reference In this chapter Phaser 6128MFP Menu Map Firmware Update Acronyms and Abbreviations ...
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