Epson AcuLaser C2900N, Service Manual

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Chapter 2 Operation of Diagnostic
Epson AcuLaser C2900N
Revision B
Confidential
4.1.7 ASIC Test
Register check
Executes this test when the 116-343 error occurred.
Test result: NG (Go to FIP.) OK (Turn off/on the main power.)
ASIC register check.
4.1.8 PANEL Test
Tests the LED, LCD, and buttons of the control panel.
This test checks input and output of the control panel. When buttons are pressed in the manner shown
in the following table, the test displays the corresponding contents on the LED and LCD.
†††
Indicates left side square is the Ready LED, middle square is the Alarm LED and right side
square is the Power Save LED. STOP
†
Not lighting
„
Lighting
4.1.9 IOT Test
Communication test with the IOT
Executes this test when the 024-371 error occurred.
Test result: NG (Go to FIP.) OK (Turn off/on the main power.)
This test checks communication with the IOT. Then it reads the status register of the IOT to check
whether commands can be exchanged with the IOT.
It sends the following command to read the status register, and checks whether the appropriate
response returns.
Read ROM Revision No
Normal Error
CHECK OK ASIC ERROR
Button LED LCD
S
„„†
Displays “UP” on the LCD.
T
„„†
Displays “DOWN” on the LCD.
W 㠠
Displays “LEFT” on the LCD.
X 㠠
Displays “RIGHT” on the LCD.
OK
†„†
Displays “SET” on the LCD.
MENU
†„†
Displays “MENU” on the LCD.
STOP
†††
Displays “CANCEL JOB” on the LCD.
POWER SAVE
††„
Displays “POWER SAVE” on the LCD.
S T
pressed at the same
time
- (The test is completed) - (The test is completed)
Normal Error
CHECK OK IOT ERROR