Phaser 6128MFP Service Manual 4-25
General Troubleshooting
6. Press Stop to stop the test.
IOT Diagnostic Tests
Do not turn the printer Off during ESS testing.
Test Control Panel Display Test Description
ESS Diag Tests for core print engine components.
Flash ROM
Test
■ Start
■ Processing
■ Check OK or NG
Calculates the Flash ROM checksum
and compares it with the stored
value. Run this test when 016-500,
016-501 and 016-502 errors occur.
Test result: NG (Go to FIP.) OK (cycle
main power.)
EEPROM Test
■ Start
■ Processing
■ Check OK or NG
This test checks the diag. area of the
EEPROM. Run this test when 116-
323 and 116-390 errors occur.
Test result: NG(Go to FIP.) OK (cycle
main power.).
DRAM Test
■ Start
■ Processing
■ Check OK or NG
This test checks the DRAM address
lines.. Execute this test when 116-
315, 116-316 and 116-320 errors
occur. Test result: NG(Go to FIP.) OK
(cycle main power.).
MAC+PHY
Test
■ Start
■ Processing
■ Check OK or NG
Run this test when 116-314, 116-
350, 116-351, 116-352 and 116-355
errors occur. Test result: NG (Go to
FIP.) OK (cycle main power.)