Xerox Phaser 6180MFP, Service Manual

Page: 426 / 884

4-14 Phaser 6180MFP Multifunction Printer Service Manual
General Troubleshooting
Service Diagnostics Tests
Service Diagnostic Tests and Utilities
Printer Diag Test Table
Test Control Panel Display Test Description
ESS Diag Tests memory devices on the Controller.
All Test All Test
■
Start
■
Processing
■
Check OK
■
***ERROR
Tests all Controller Diag tests except
for the MAC+PHY and Control Panel
tests.
CodeROM Test CodeROM Test
■
Start
■
Processing
■
Check OK
■
CodeROM#* ERROR
■
S=xxxx V=yyyy
Calculates the ROM checksum chip by
chip and compares it with the value
stored in the CodeROM itself
beforehand.
When the checksum is identical to the
stored value, this test determines the
chip is normal.
Note: Run this test when error 116-317
occurs.
FontROM Test FontROM Test
■
Start
■
Processing
■
Check OK
■
FontROM ERROR
■
S=xxxx V=yyyy
Calculates the Font ROM checksum
chip by chip and compares it with the
value stored in the FontROM itself
beforehand.
When the checksum is identical to the
stored value, this test determines the
chip is normal.
Note: Run this test when errors 116-
310 and 116-311 occur.
EEPROM Test EEPROM Test
■
Start
■
Processing
■
Check OK
■
EEPROM ID* ERROR
(*:1,2)
Performs write/read/verification of the
test patterns (0xff, 0xaa, 0x55, and
0x00) on one byte at every 0x400 from
the first address of EEPROM.
Note: Run this test when errors 116-
323, 116-324, and 116-327 occur.
DRAM Test DRAM Test
■
Start
■
Processing
■
Check OK
■
DRAM slot* ERROR
(*: 0,1)
Tests Open/Short with the address line
of the DRAM, and performs write/read/
verification on the entire DRAM. When
the optional DRAM SIMM is checked
and found, it checks the optional
memory area.
Note: Run this test when errors 116-
315,116-316, 116-318, 116-332, and
116-335 occur.