Operation To Start Flash Download; Execution Of The Rewite Operation - OKIDATA ML1120 Maintenance Manual

7.3

Operation to start flash download.

Flash download steps are explained below.

7.3.1 Execution of the rewite operation

(1) Install the EPROM to download the board and close the upper cover.
(2) Start Maintenance mode 2 by turning the printer on while holding down "SEL"+"LF/
FF"+"TEAR" switches.
(3) Start rewriting the flash memory by pressing "LOAD/EJECT" switch while holding down
"LF/FF" switch.
- Status/result during the rewrite work are shown by LED indications.
- If an errors occurs during the rewrite work, the fatal alarm state will result.
The table below shows the LED indication/work state.
(LED indication and work state)
STEP
1
2
3
4
5
6
7
*Meaning of the LED indications
O : OFF
G : Light up
# : Blinking (ON 200ms and OFF 200ms cycle)
(4) Confirm the STEP 7 (FLASH rewrite complete) state and turn the printer off. This com-
pletes the operation.
NOTICE) DONOT POWER OFF WHILE REWITING THE FLASH ROM.
Possible to no work the printer if power off the printer while download the F/W.
In this case have to change the flash ROM chip.
43471801TH Rev.1
LED indication
STATUS
SEL ALARM 1
G
O O
#
O O
O O O
# #
O
#
O O
G
O O
G
O O
2
O Entire FLADH being erased
FLASH rewriting in progress < 25% (EPROM → FLASH)>
O
# FLASH rewriting in progress < 50% (EPROM → FLASH)>
FLASH rewriting in progress < 75% (EPROM → FLASH)>
O
# FLASH rewriting in progress < 100% (EPROM → FLASH)>
#
FLASH rewritten data HASH check in progress
G
FLASH rewrite complete
Oki Data CONFIDENTIAL
REMARK
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