Adjustment H: Detector-Slip Insertion Assembly Threshold Value Adjustment - Epson TM-U950 Technical Manual

CONFIDENTIAL

Adjustment H: Detector-Slip Insertion Assembly Threshold Value Adjustment

After replacing detector-slip insertion assembly, main circuit board, or printer mechanism
assembly, be sure to perform the following adjustment to assure correct operation of the printer.
Step
1
2
3
4
5
6
Rev. A
Printer Operation
Preparing to enter special setting mode
Enter special setting mode
Prints the following message when user operation 1
to 4 is finished.
*****Special Setting Mode*****
This mode is used for
changing internal setting mode.
Turn off the power, if not necessary.
EEPROM read/write test
Prints the following message after the test
depending on the result.
When no error was found:
(1) EEPROM Read/Write Test is completed.
When error was found:
(1) EEPROM Read/Write ERROR!!
EEPROM process STOP.
EEPROM threshold value check
Checks the threshold value in EEPROM, and prints
the following message.
(2) SLIP IN DETECTOR THRESHOLD VALUE
in the EEPROM : [ ** ]
(** shows threshold value in hexadecimal )
(**shows threshold value in hexadecimal.)
Detection value measurement without slip paper
Measures the slip paper insert detection value
without slip paper. The result is printed as follows:
(3) A/D-converted value
Paper OUT : [ ** ]
(** shows detection value in hexadecimal.)
Detection value measurement with slip paper
Measures the slip paper insert detection value with
slip paper, and prints the following message.
(4) Please SET paper
on SLIP IN detector position.
If ready, Press panel switch.
Prints the detection value of the measurement
as follows:
(5) A/D-converted value
Paper IN : [ ** ]
(** shows detection value in hexadecimal.)
TM-U950/U950P Technical Manual
User Operation
Set DIP switch 6 of switch bank 2 to off.
Execute the following steps 1 to 4.
1 Open the cover-main assembly. Turn on the
printer while pressing both the RECEIPT FEED
and JOURNAL/SLIP FEED buttons.
2 Release RECEIPT FEED button then JOURNAL/
SLIP FEED button.
3 Press RECEIPT FEED button or JOURNAL/SLIP
FEED button more than six times.
4 Close the cover-main assembly.
This is an unrecoverable error. Reset the printer and
confirm that the initialization is executed correctly.
Replace the main circuit board if this error message
is still printed after executing the adjustment two
times.
When message (4) is printed, insert the slip paper in
the slip paper insert detection position, and press
either panel operation button.
Disassembly, Assembly, and Adjustments 5-81