Service Functions; Hex Dump Mode; Support Mode; Eeprom Initialization - Epson AcuLaser C8500 Service Manual

EPSON AcuLaser C8500

1.5 Service Functions

Turning the printer on while pressing the specified button(s) until RAM check is
completed provides several service functions. The service functions supported
with this printer and corresponding activation methods are as listed below.
Table 1-27. Service Functions
Function
Turn on the power while pressing the Form
Hex Dump
Feed button.
Turn on the power while pressing the Value

Support Mode

button.
Turn on the power while pressing the On Line

EEPROM Initialization

+ Continue + Menu buttons.
Panel Setting Value Turn on the power while pressing the
Initialization Continue button.
Turn on the power while pressing the Alt +
Format Flash ROM Module
Item + Value + Enter buttons.
Turn on the power while pressing the On Line
Program ROM Update
+ Alt + Value buttons.
Turn on the power while pressing the On Line
ROM Module Copy
+ Alt + Enter buttons.
Turn on the power while pressing the On Line
Maintenance Mode
+ Form Feed + Continue buttons.
Engine program ROM Turn on the power while pressing the On Line
update + Alt + Item + Value buttons.
CPU reset when a Service When a Service Call Error occurs, Press the
Call occurs. Alt + Menu + Item + Value + Enter buttons.
Following CPU Reset after a Service Call Error
Printing of the Error Sheet
occurs, press the
PRODUCT DESCRIPTIONS
Operating Method
button
Enter 2 times.
Service Functions

1.5.1 Hex Dump Mode

Buttons: Form Feed + Power on
Functions: "Hex Dump" is indicated. Received data is converted into
hex ASCII. This is valid for all interfaces. The hex damp
sheet contains the following information:
Dump list with the received data in hex ASCII format
Data list with 1-byte code characters (Unreadable
characters are expressed by *.*.)
Page number
Termination:Press "Reset" button to perform warm boot
or turn the printer off and back on.
1.5.2 Support Mode
Buttons: Value + Power on
Functions: Adds the support mode to the setting menu list. Once it is
added, the printer performs warm-boot, then the support
mode can be selected and executed. The support mode
enables servicers to set items, including HDD initialization,
that are normally not set by the users.
NOTE: By using the Support Mode, this printer can adjust the 2nd Bias
Transfer Voltage at the user's level. See 1.6.3.6 "Toner Transfer
Menu" for detail.
1.5.3 EEPROM Initialization
Buttons: On Line + Continue + Menu + Power on
Functions: Clears the EEPROM to 00h and writes factory default
values. In this printer, however, the Fuser counter and
Total pages are not cleared by this operation. Color pages
is cleared. (Color Pages is stored in the controller. The
fuser counter and Total Pages are stored on the engine
side.)
Termination: After initializing, the printer performs warm boot and
returns to the normal states.
Revision C
1-36