3-3. JUMPERS
LIU
1
TB1
1
TB2
1 TB3
1
TB4
The jumper wires are set as shown below in the factory for each version.
WARNING:
Service parts for types 1, 4, and 6 are set to type 6, and service parts for types 2 and
3 are set to type 2. When installing a new LIU, make sure that it is at the correct setting for the ma-
chine. Also, note that the LIU for type 2 has a dummy jumper on pin 4 of TB3; this is a spare
jumper for use if you wish to install the LIU board in a type 3 machine.
1
TB1
1
TB2
1 TB3
1
TB4
1
TB1
1
TB2
1 TB3
1
TB4
1
TB1
1
TB2
1 TB3
1
TB4
1
TB1
1
TB2
1 TB3
1
TB4
1
TB1
1
TB2
1 TB3
1
TB4
H501/502-50
(Type 1)
H501/502-52
(Type 3)
H501/502-53
(Type 4)
H501/502-54
(Type 5)
H501/502-55
(Type 6)
1
TB1
1
TB2
1 TB3
1
TB4
H501/502-51
(Type 2)
Dummy Jumper
3-11
