Oki LP-1040 Maintenance Manual page 363

(c) Changing a two circuit board configuration (HV-PSU-LSP2 MNT, HV(TC)-PSU-T2 MNT) to a
one circuit board configuration ([HV-PS]HV(4CH)-PSU-T2 MNT)
Note
 Remove the relay cable from CH4's wiring.
 Note that trays are not compatible between one and two circuit board configurations.
Two circuit board configuration
This connector is not used if converting
to a one circuit board configuration.
C
One circuit board configuration
B
C
A
9-76
B
CH3
CH3
Empty
A
CH2
CH1
CH2
Relay cable
CH4
CH1
CH4
D
Ferrite core