Hitachi ZAXIS 70 Operator's Manual page 294

2. Handling of Registration Key (Gray)
Registration key (gray) is used to register the ordinary
operation keys (black). Thereby, if the registration key
is lost, not only cancellation / additional registration of
the ordinary operation keys becomes impractical but
also possibly the registration key function may be
misused by a third person. Therefore, replacement of
both the key and the controller is recommended in
this case. As long as one ordinary operation key is
held at hand, the engine can be started. However, in
case both the registration and ordinary operation keys
are lost, the keys and the controller unit must be re-
placed.
IMPORTANT: As mentioned above, the registration
key helps the customer to correctly op-
erate and service the machine. Accord-
ingly, the registration key should be kept
in a secure place such as the customer
's office under strict superintendence.
Necessary replacing parts when the registration key is
lost:
Key Assembly (P/N 4477011): A set of the IC chip built-in
keys and controller unit
After the registration key and the controller are replaced,
the ordinary operation keys become unusable. Re-register
them to make them available.
3. Ordinary Operation Key
The ordinary operation keys (black) become available
after registered using the registration key and the
controller. Two ordinary operation keys in the elec-
tronic key lock attached to the delivered machine
have already been registered. In case the ordinary
operation key is lost, get genuine Hitachi spare ordi-
nary operation key (P/N 4484755). Then, use it after
registration is performed. Normally, up to 5 ordinary
operation keys can be registered to make them us-
able. Refer to the following pages for registration
procedure.
(1) Registration Key (Gray): 1
(2) Ordinary Operation Keys (Black): Max. 5
OPTIONAL ATTACHMENTS AND DEVICES
Loop Antenna
13-20
Controller
Registration Key (Gray)
Ordinary Operation Key (Black)
1
M1G6-13-015
2
M1G6-13-016