Usb Host Test; Rtc Test - Epson AcuLaser C2900N Service Manual

Chapter 2 Operation of Diagnostic

4.1.10 USB Host Test

When USB Host Test is executed, the following submenus are displayed. The communication between
the USB Host port and the device connected with it can be confirmed.
USB Host Test
1)TEST MODE:
It makes it to the static test mode in which the DownStream port of Host Controller is specified.
TEST J: The port is J state.
TEST K: The port is K state.
TEST SE0: The port is SE0 state.
TEST PACKET: The port repeats the test packet.
TEST ENABLE: The port compulsorily enters the state of ENABLE.
2)Single Step:
The collection of Device Descriptor of the specified device address is executed by the single step.
3)Get Device Info:
Information on the device is acquired.
VID: Value of VendorID.
PID: Value of ProductID.
Add: Device address
Prt: Number of Downstream port of Controller or Hub.

4.1.11 RTC Test

Checks the Real Time Clock chip. Execute this test when 117-365 Error occurred.
Normal
CHECK OK
Epson AcuLaser C2900N
TEST MODE
Single Step
Get Device Info
2 - 10
Test PACKET
Test ENABLE
Address: 000
Device 1 VID:0000 Add:000
Device 2 PID:0000 Prt:000
Error
RTC ERROR
Revision B
Test J
Test K
Test SE0
DATA IN
Confidential