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9.2.1 Activate the optical switches
To reset the key lock mark " " of optical switches, carry out the procedure shown below.
If an optical switch undergoes reaction, "
" mark will be displayed, and if the operation is normally executed,
the key lock mark " " will disappear.
(1) Push switch long.
(2) If PUSH SEL is displayed, push switch long.
(3) If PUSH CLr is displayed, push switch long.
(4) The key lock " " display disappears and the key is unlocked.
If "PUSH PrG" is displayed during the operation shown above, an operation error is generated. Carry out the
operation from step (1) again.
If nothing is operated after the key is unlocked, the status will automatically return to key lock status in 30
seconds.
When the key is locked, the key lock mark " " is displayed in the upper part of the display.
9.2.2 Key lock of optical switches
If you touch the optical switches and at the same time for three seconds or wait for 30 seconds,
the key will be locked. If the key is locked, the key lock mark will be displayed in the upper part of the display as
shown below.
Fig. 9.3 Indication of key lock mark
9.2.3 Operation by push button
If the front lid is removed, three mechanical push buttons are allocated under three optical switches in the same
order as optical switches. To prevent malfunction, check the key lock of optical switches is activated before
removing the front lid.
These keys operate in a same way as optical switches.
Fig. 9.4 Operation of push button
PROG
CLEAR
PROG
SELECT
CLEAR
Prog
Select
Clear
PROG
SELECT
CLEAR
Summary of Contents for EL0137
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