Epson Stylus Photo 950, Руководство по обслуживанию

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EPSON Stylus PHOTO 950 Revision A
TROUBLESHOOTING Overview 55
3.1.1 Communication Error
This section describes the procedures for solving the problem when no communication
at all is received from the computer after the printer power has been turned on, even
when initialization has completed normally and the printer is at the standby condition.
3.1.2 Too Late Throughput
This section describes the procedures for checking printers that have been returned
because the printing speed suddenly became much slower after having operated
normally up until then. Basically this problem is unlikely to occur in Windows and
Macintosh environments because the printer driver is used to transmit data and
commands, but it is possible that customers using the printer in a DOS environment
may experience this problem.
NOTE: If the problem does not disappear or if it cannot be reproduced when
these checks are carried out, refer to "CR Motor Operation Abnormal" in
Section 3.1.6.10.
Table 3-1. Communication Error Checking Point
Step Check Point Remedy
1 Is the customer's
I/F cable broken? If communication is possible at all times while working, proceed
to the next step. If communication is not possible, change the
interface from parallel to USB or vice versa and check if
communication is then possible. If there is still no
communication, continue to the next step.
2 Use the
adjustment
program to check
the 04H address
(interface
protocol setting)
for the EEPROM. The relationship between the interface protocol setting status and
the setting values is given below.
00H :
Auto (Default value; communication problems should
never occur with this setting.)
01H : Fixed to Parallel (Communication problems occur when
using USB)
03H : Fixed to USB (Communication problems occur when
using parallel)
To reset, use the Dump function of the adjustment software to
rewrite the setting to the default (00H). The relationship between
the interface protocol setting status and the setting values is given
below. For details, refer to Chapter 5.
NOTE: The Stylus PHOTO 950 has a default setting function,
but unlike previous models, interface protocol selection
is not possible. Even if the default value (00H) is
changed to 01H or 03H, the EEPROM data may
become corrupted, so even if the communication
problem is fixed, there is a high possibility that the
various adjustment values may be distorted. Because of
this, all parameter electrical adjustments should be
carried out afresh. Refer to Chapter 5 for details.
3 EPSON USB
Port
(Only for USB
User) If no problems occur when the above two checks are carried out,
check with the customer whether the USB port has been installed
correctly or not, and if necessary get the customer to reinstall the
driver and re-check. (However, this is only for customers who are
using USB.)
Table 3-2. Too Late Throughput
Step Check Point Remedy
1 Use the adjustment
program to check
the 16H address for
the EEPROM. The relationship between the setting status and the setting values
is given below.
00H : Bi-D
01H : Uni-D
02H : Auto
To reset, use the Dump function of the adjustment software to
rewrite the setting to the default (02H). The relationship between
the interface protocol setting status and the setting values is
given below.
00H : Auto
(Default value; communication problems should never
occur with this setting.)
01H : Fixed to Parallel
(Communication problems occur when using USB)
03H : Fixed to USB
(Communication problems occur when using parallel)
To reset, use the Dump function of the adjustment software to
rewrite the setting to the default (00H). Refer to Chapter 5 for
details.
NOTE: The Stylus PHOTO 950 has a default setting function,
and it can be used for setting this item also, so that the
setting can be returned to the default without using the
adjustment software.